Three-dimensional apertured film

FIELD: medicine.

SUBSTANCE: there is disclosed three-dimensional apertured film containing the first plane surface in the first default plane, the second plane surface in the second default plane and a set of apertures passing between the first and second surfaces. The three-dimensional apertured film also comprises at least one element that overlaps each set of apertures to form thereby a set of smaller apertures. The element overlapping each aperture has an upper face arranged below the first default plane.

EFFECT: three-dimensional apertured film has improved properties in processing the fluid when used in disposable absorbing products.

57 cl, 11 dwg, 1 tbl

 

The technical field

The present invention generally relates to three-dimensional film materials with holes, suitable for use as components products for personal hygiene, such as sanitary napkins, diapers, products used in case of incontinence, tampons, surgical dressings, dressings for wounds, underlying pads, rags for wiping, and the like. More precisely, the present invention relates to three-dimensional polymer films with holes having improved capabilities for processing fluid and masking when used as a constituent layer in absorbing disposable.

Background of invention

The use of films with holes in products for personal hygiene is well known in the art. These films can be used as a contact with the body facing the body layers, as layers for processing fluid or as other components of products for personal hygiene. When using such films designed for women, hygienic protective products as contact with the body facing the body layer in General it was found that the larger the area of a carrying section of the film, the more effectively the film will be providing the th movement of the menstrual fluid in the lower layers (for example, transporting layer, absorbent core of the product. Unfortunately, it was also found that the larger the area of a carrying section of the film, the less effective the film is in "masking spots"created by the absorbed menstrual fluid medium after moving the menstrual fluid in the underlying layers of the product. That is, the larger the area of a carrying section of the film, the more visible will be the spot menstrual fluid after absorbing its product.

The present invention is to create a film with holes having improved properties during processing of the fluid film in the absorbing disposable products, such as intended for women of hygiene protective products. More precisely, the present invention is to create a film with holes, which ensures efficient movement of fluid in the underlying absorbent structure and at the same time has improved the properties of the masking spots.

The invention

With regard to the foregoing, in accordance with the first aspect of the invention the three-dimensional film with holes, including the first flat surface in a first imaginary plane, the second planar surface of the second imaginary p is Ascoli; many holes that pass, at least from the said first flat surface to the second flat surface; at least one element overlying each of a specified set of holes, and the element overlying each of these holes has an upper surface located in a third imaginary plane and the third imaginary plane located below the first imaginary plane.

In accordance with the second aspect of the invention the three-dimensional film with holes, comprising a first essentially flat surface located in a first imaginary plane; a second essentially flat surface located in the second imaginary plane; a lot connected with each other, frame parts, each frame parts has at least first and second inner walls located opposite each other and at some distance from each other; many of transverse elements, each of these transverse elements passes from one of the inner walls of one of the frame parts to the opposing second inner wall of one of the frame parts, each of the transverse elements has an upper surface located in an imaginary plane located below the first in brahimaj plane, and a lot of holes passing from the at least first planar surface to the second flat surface, with each of the holes is limited to at least one of the frame parts and at least one of these transverse elements.

In accordance with a third aspect of the invention the three-dimensional film with holes, including the first flat surface in a first imaginary plane; a second flat surface on the second imaginary plane; a first set of apertures; at least one element overlying each of the first set of holes for education (boundary) thus many smaller holes, with each of the many smaller holes communicated with the corresponding hole of the first set of holes, and the element overlying each of these holes has an upper surface located in a third imaginary plane and the third imaginary plane located below the first imaginary plane.

In accordance with the fourth aspect of the invention the three-dimensional film with holes, including the first flat surface in a first imaginary plane, the second planar surface of the second imaginary plane located below the first imaginary square is skoti, the first set of apertures, at least one element overlying each of the specified first set of holes for education thus many smaller holes, each of a specified set of smaller holes communicated with the corresponding hole of the first set of holes with the specified element overlying each of these holes has an upper surface located in a third imaginary plane and the third imaginary plane located below the first imaginary plane.

In accordance with the fifth aspect of the invention the three-dimensional film with holes, comprising a first essentially flat surface located in a first imaginary plane, the second essentially planar surface located in the second imaginary plane, many connected with each other, frame parts, each frame parts has at least first and second inner walls located opposite each other and at a distance from each other, many of transverse elements, each of the transverse elements passes from one of these inner walls of one of the frame parts to the specified the opposing second inner wall of one of the frame parts, and each of these p is peppery elements has an upper surface, located in an imaginary plane located below the first imaginary plane, the first set of apertures passing from the at least first planar surface to the second flat surface, with each of these holes is limited to at least one of the frame parts and at least one of the transverse elements and the second set of apertures.

In accordance with the sixth aspect of the present invention developed a three-dimensional film with holes, including the first flat surface in a first imaginary plane, the second planar surface of the second imaginary plane, the number of holes, passing at least from the first flat surface to the second flat surface, at least one element overlying each of a specified set of holes, and the element overlying each of these holes has an upper surface located in a third imaginary plane and the third imaginary plane located below the first imaginary plane and a second set of apertures.

Brief description of drawings

Figa is a schematic view of a three-dimensional film in accordance with one embodiment of the present invention;

Fig.1b is carried out with part of the s ' tear-out perspective view of the film, shown in Figa, with a broken-out section made along the line 1B on Figa;

Figs is an enlarged micrograph is shown schematically in Figa three-dimensional film, showing its upper surface;

Fig.1d is an enlarged micrograph shown in Figs three-dimensional film, showing its lower surface;

Fige is a schematic view of a three-dimensional film in accordance with the second embodiment of the present invention;

Fig.1f is carried out with a partial tear-out perspective view of the film shown in Fige, with a broken-out section made along the line of “1f” on File;

Figg is a micrograph of the top surface of the three-dimensional film, schematically shown in Figi;

Fig.1h is a micrograph of the bottom surface of the three-dimensional film, shown in Figg;

Fig is an enlarged micrograph of the three-dimensional plot of the film, shown in Figg, with this plot corresponds to the plot of the film, surrounded by a circle “1f” on File;

Fig.1j is a micrograph shown in Fig three-dimensional plot of the film, showing its bottom surface;

Figure 2 is a schematic illustration of one type of three-dimensional topographies the CSOs support element, suitable for manufacturing the film according to the present invention;

Figure 3 is a schematic illustration of a device for laser sculptural treatment of the workpiece for the formation of three-dimensional topographical support element suitable for manufacturing the film according to the present invention;

Figure 4 is a schematic illustration of a computer control system for the device in Figure 3;

Figure 5 is a graphical representation of a file for laser sculptural treatment of the workpiece to obtain three-dimensional topographical support element for the manufacture of the film with holes, shown in Figa-1d;

Figa is a graphical representation of the file shown in Figure 5, which shows an enlarged part of it;

Fig.5b is a graphical representation of a file for laser sculptural treatment of the workpiece to obtain three-dimensional topographical support element for the manufacture of the film with holes, shown in Fige-1j;

Figs is an enlarged section of the graphical representation shown in Fig.5b file showing the section of the file, surrounded by a circle "5C" Fig.5b;

Fig.5d represents a magnified graphical representation pok is related to Fig.5b file showing part of the file, surrounded by a circle "5d" Fig.5b;

File is an enlarged section of the graphical representation shown in Fig.5d showing the section of the file, surrounded by a circle "5e" Fig.5d;

6 is a micrograph of the workpiece after sculptural processing it using the file in Figure 5;

Figa is a micrograph of the workpiece after sculptural processing it using the file shown in Fig.5b-5e;

Fig.6b is a magnified portion of the workpiece shown in Figa, with specified magnified portion corresponds to the area surrounded by the circle "6b" Figa;

Fig.7 is a view of a support member used for manufacturing the film according to the invention instead of a device for forming film;

Fig is a schematic view of an apparatus for manufacturing a film with holes in accordance with the present invention;

Fig.9 is a schematic view of an encircled part in Fig;

Figure 10 represents the average histogram showing the intensity of the spots for absorbent articles having a film with holes in accordance with the present invention as a coating layer of the specified products, and

F. g is a graphical representation of the file for the firmware of the workpiece using firmware by raster scanning to obtain three-dimensional topographical support element for the manufacture of film with holes.

Detailed description of the invention

The present invention is directed to the creation of three-dimensional films with holes, especially suitable for use in products for personal hygiene. These films can be used as a contact with the body facing the body layers, as layers for processing fluid or as other components of products for personal hygiene. It was found that the film of the present invention have improved performance when processing fluid when using these films in the absorbing products single use, such as intended for women of hygiene protective products. In particular, it was found that the film of the present invention provide improved performance masking stains and at the same time provide the ability to effectively move the fluid through the membrane compared to conventional films.

Here are Figa-1d, which show the film 10 with holes in accordance with one embodiment of the present invention. The film 10 includes many duplicate connected with each other frameworks 12. In the embodiment shown in Figa-1d, each frame 12 includes opposite end zones 12 and 12b and opposite side walls 12C and 12d. End zone 12A and 12b are each at a certain distance from each other, and opposite side walls 12C and 12d are each at a certain distance from each other. In the specific embodiment shown in Figa-1d, each of the frames 12 are interconnected by a frame 12. More specifically, as shown, each frame 12 has a common side wall 12C, 12d with directly adjacent frame 12. Similarly, each frame 12 has a common end zone 12A, 12b with directly adjacent frame 12. The film 10 with holes additionally includes first and second transverse elements 14a and 14b. As shown, the transverse element 14b extends from the first side wall 12C to the opposite side wall 12d of the frame 12. Similarly, the transverse element 14a passes from the end zone 12A to the opposite end zone 12b. In the embodiment of the invention shown in Figa-1E, the transverse elements 14a and 14b are shown intersecting at the center of the frame. In addition, in the embodiment of the invention shown in Figa-1E, the transverse elements 14a and 14b are orthogonal relative to each other.

Although in the embodiment of the invention shown in Figa-1d, shows the film 10 with holes having two transverse element 14a and 14b, there is the possibility the ü in there's only one transverse element may be used provided that the transverse element passes across the bandwidth of the cross section bounded by the frame 12. In addition, despite the fact that the frame 12 is shown as made essentially hexagonal in shape, there is the possibility of using other forms for the frame 12. Each of the transverse elements 14a and 14b preferably has a width "a" (see Fig.1b) in the range of approximately 4,0 mil to about 24,0 mils (1 mil=0.001 inch). Each of the transverse elements 14a and 14b preferably has a length "b" (see Fig.1b) in the range of approximately about 30.0 mils to about 150,0 million. If required, the film 10 may include many of the bumps 11 or the like, located on the film surface, as best seen in Figa.

The film 10 includes a number of holes 16. Each hole 16 is limited, at least a section of the frame 12 and at least a portion of one of the transverse elements 14a and 14b. Next Fig.1b, which is an illustration made with partial tear-out form in the perspective shown in figure 1, the film 10, with a broken-out section made along the line 1B on Figa. Each hole is limited, at least a section of each of the transverse elements 14a and 14b, and the area of the frame 12. More precisely, how better everything about seen on Fig.1b, each of the holes 16 is limited to the corresponding inner wall 22, 24 of the respective side walls 12C, 12d of the framework (the framework) 12. Each hole 16 is further limited to the corresponding inner wall 26 or 28 of the transverse element 14b and the corresponding inner wall 30, 32 of the transverse element 14a. In the end, each hole 16 is limited to the corresponding inner wall 34, 36 of the respective end zones 12A, 12b.

As also shown in Fig.1b, the film 10 typically has a first essentially flat, upper surface 18 in an imaginary plane 23 and the opposite, essentially flat with the second bottom surface 21 in an imaginary plane 25. The upper surface 38 of the side walls 12C and 12d and the upper surface 40 of end zones 12A and 12b coplanar with the plane 23. However, the top surfaces 42 and 44 of the transverse elements 14a and 14b recessed relative to the plane 23. More precisely, the upper surfaces 42 and 44 of the transverse elements 14a and 14b are located in the plane 27 located below both surfaces 23 and 25. Preferably the upper surfaces 42 and 44 of the transverse elements 14a and 14b are recessed relative to the upper surface 18 of the film, that is recessed relative to the plane 23, a depth in the range from approximately 3.0 mils to about 17,0 mil. The top surfaces 42 and 44 of the transverse elements 4A and 14b preferably essentially parallel imaginary planes 23 and 25.

The inner walls 22, 24 of the side walls 12C and 12d, the inner walls 26, 28 of the transverse element 14a, the inner walls 30, 32 of the transverse element 14b and the inner walls 34, 36 of the end zones 12A, 12b cooperate to limit the holes 16, and each of these inner walls passes below the plane 25 so that the lower the initial part of each hole 16 is located below the lower flat surface 21 of the film, that is, below an imaginary plane 25. More precisely, the inner walls 22, 24 of the side walls 12C and 12d, the inner walls 26, 28 of the transverse element 14a, the inner walls 30, 32 of the transverse element 14b and the inner walls 34, 36 of the end zones 12A, 12b are held down so that the lower the initial part of each hole is located in an imaginary plane 29, which is located below the imaginary plane 23, 25 and 27. It should be noted that all imaginary plane 23, 25, 27 and 29 are essentially parallel to each other.

Because the upper surfaces 42, 44 of the transverse elements 14a and 14b are recessed relative to the upper surface 18 of the film 10, that is recessed relative to an imaginary plane 23, the first relatively large hole is actually formed from the upper surface 18 of the film 10 to the upper surfaces 42, 44 of the transverse elements. The transverse elements 14a and 14b serve to divide the larger holes on four relatively what about the smaller holes, connected with the greatest hole from the top surfaces 42, 44 of the transverse elements 14a and 14b through the bottom of the initial part of each hole 16. In other words, each frame element (frame) 12 a relatively large hole is formed from the plane 23 to the plane 27, and a multitude of relatively smaller holes which are communicated with the greatest hole, formed from the plane 27 to the plane 29. In the embodiment shown in Figa-1d, each of the smaller holes, formed from plane 27 to the plane 29, has an area which is less than one-quarter of the total area of the larger holes, formed from the plane 23 to the plane 27. In the embodiment, in which was used one transverse element, each of the smaller holes, limited transverse element, will have a size which is less than half the total area of the larger holes. The reader acknowledges that to ensure simplicity and clarity in the drawings as "smaller"and "larger" holes discussed above, in General, indicated here by the reference position 16.

Here are Five-1j show film 100 with holes in accordance with the second embodiment of the present invention. On Five-1j use the same or similar reference position as used on Figa-1d, DL is the designation of the same and/or corresponding structure, similar to that shown in Figa-1d and described above.

As best seen in Five and 1g, the film 100 includes at least a first portion 102 and at least a second part 104. The first part 102 is formed by many duplicate interconnected frame 12 defining the boundary of the set of holes 16, such as those described above. In the embodiment shown in Fige-1j, each frame 12 includes opposite end zones 12A and 12b and opposite side walls 12C and 12d. The film 100 with holes includes first and second transverse elements 14a and 14b. The transverse elements 14a and 14b preferably has a width "a" in the range of approximately 4,0 mil to about 24,0 mil. Each of the transverse elements 14a and 14b preferably has a length "b" in the range of approximately about 30.0 mils to about 150,0 million. Preferably the upper surfaces 42 and 44 of the transverse elements 14a and 14b are recessed relative to the upper surface 18 of the film, that is recessed relative to the plane 23, a depth in the range from approximately 3.0 mils to about 17,0 mil.

As shown in Fig.1f, film 100, as a rule, has an essentially flat upper surface 18 in an imaginary plane 23 and the opposite, essentially flat with the second bottom surface 21 in an imaginary plane 25. Conciliatory 12A and 12b and the sections 12C' and 12d' of the side walls 12C and 12d in areas in which the transverse element 14b intersects with the side wall 12C and 12d formed so that at least part of the upper surface of the film in these areas is recessed relative to an imaginary plane 23. In a particular embodiment, the film 100 shown in Fig.1f, end zone 12A and 12b and the sections 12C' and 12d' of the side walls 12C and 12d in the areas in which the transverse element 14b intersects with the side wall 12C and 12d are essentially w-shaped or sinusoidal shape in cross section is formed of a pair of cavities 111 and peak 113 located between the cavities 111. As shown, the top surface 115 of the film in the area of the depressions 111 is located in the plane 35, which is recessed relative to an imaginary plane 23. In particular, the plane 35 is located between the plane 23 and the plane 25. Preferably the depression 111 in point, most "embedded" with respect to a plane 23, have a depth in the range of from about 2 to about 5 mils relative to the plane 23.

Although in the specific embodiment 100 of the implementation of the end zone 12A and 12b and the sections 12C' and 12d' of the side walls 12C and 12d in the areas in which the transverse element 14b intersects with the side wall 12C and 12d are formed so that they have essentially w-shaped cross-section, these zones can be formed with other shapes and configurations,however, at least part of the upper surface of the film in those areas in which the transverse elements 14a and 14b cross frame 12, is recessed relative to the plane 23. By performing film 100 in those areas in which the transverse element 14a crosses the end zone 12A and 12b, and in those areas in which the transverse element 14b crosses the side walls 12C and 12d, so that at least part of it will be recessed relative to the plane 23, the degree of perceived softness of the film. Although in the specific embodiment of the invention shown in Fig.1f, the film 100 is made in the end zones 12A and 12b and 12C' and 12d' of the side walls 12C and 12d so that at least part of the film surface is recessed relative to the plane 23, there is the possibility of creating a film in such a way that only one of these zones will be recessed relative to the plane 23. For example, only the portions 12C' and 12d' can be drowned, or alternatively, only the end zone 12A and 12b can be drowned.

As best seen in Five, the second part 104 of the film 100A with holes includes a second set of apertures 106, which can be visually distinguished from the first set of holes 16. The term "visually distinct (distinct)" used here means that each of the second set of the holes 106 has a shape and/or size, which are sufficiently different from the shape and/or size of each of the holes 16 of the first set of holes 16, so that, when viewed with the naked eye, each of the second set of holes 106 can be visually distinguished from each of the first set of holes 16. In one embodiment of the invention shown in Fige-1j, each of the second set of holes 106 has an essentially elliptical shape with the major axis “y” and the minor axis “z”. The major axis “y” and the minor axis “z” preferably each have a length in the range from about 5 mils to about 150 mils. In one specific embodiment, the major axis has a length, which is about 43 mils, and the minor axis has a length, which is approximately 16 mils. In one preferred variant of the invention, the holes of the second set of holes 106 are each at a distance n from each other, comprising from about 10 mils to about 100 mils when measured from the center of one hole to the center of the openings adjacent in the horizontal direction along the horizontal lines, and openings of the second set of holes 106 are each at a distance "o" from the hole 106, adjacent in the vertical direction, this distance is approximately 10 mils d is approximately 70 mils when measured from the center of one hole to centre of hole, neighboring in the vertical direction, along the diagonal connecting the center of each hole. In a specific embodiment of the invention, the distance “n” is 40 mils, and the distance “o” is 34 million.

Holes of the second set of holes 106 can be located in a configuration intended for the education of illustration, characters, text, or the like, or combinations thereof. For example, in the embodiment of the invention shown in Fige and 1g, the holes of the second set of holes 106 are located so as to form a pattern in the form of a butterfly. Although in the specific embodiment of the invention shown and described with reference to Five-1j shows the picture in the form of a butterfly, possible any other number of drawings.

The film 100 shown in Fige-1j, also performed with the boundary element 108 that separates the first set of holes 16 from the second set of holes 106. Preferably boundary element has such a shape and size that it is visually distinguishable when viewed with the naked eye, from each of the first set of holes 16 and each of the second set of holes 106. Preferably boundary element 108 has a width “x” (see File) in the range of from about 25 mils to 90 mils. In one preferred embodiment of the invention faces the element 108 is made without holes. The surface film 109 located within the area bounded by the boundary element 108, preferably recessed relative to the upper, essentially flat surface 18 of the film. In other words, the surface 109 of the film, limited within the boundary of element 108, is recessed relative to the plane 23. Preferably the surface of the film 109 is recessed relative to the plane 23 on the order of about 2 mils to about 5 mils. The surface of the film forming himself boundary element 108, preferably located in the plane 23.

Preferably boundary element 108 communicates with a second set of apertures 106 for job visually distinct boundaries figure, characters, text, or the like. For example, in the shown embodiment, the film 100 boundary element interacts with the second set of apertures 106 to form a pattern in the form of a butterfly.

Although for simplicity File shows one butterfly, many such elements may be located at a distance from each other on the film surface. For example, in one particular embodiment, the film can have a lot of similar butterflies, located at a distance from each other on the film material. In addition, can be used pictures of different size, for example, in one particular VA is iante implementation in the same film is used for a multitude of relatively large butterflies and many butterflies smaller size.

Film with holes according to the present invention preferably have a flow cross section in the range from approximately 20% to approximately 30%. The area of the throughput cross-section can be determined through the use of image analysis to measure the relative percentages of the areas of the zones, which are holes, and areas with a hole, or "pads". Essentially, when image analysis is the conversion of an optical image from the optical microscope into an electronic signal suitable for processing. An electron beam scans the image line by line. When scanning each row of the output signal varies in accordance with the illumination. White areas provide relatively high voltage, and the black area is a relatively low voltage. Receive an image formed with holes, and in this image, the holes are white, while the solid zone of thermoplastic material have different levels of gray.

The more dense is the solid area, the darker the gray area will be obtained. Each line of an image, which is divided into the measuring points or pixels. The following equipment can be used to perform the analysis described above: the image analyzer is ageni Quantimet Q520 (software v.5.02B and Grey Store Option) sold by LEICA Cambridge Instruments Ltd., in conjunction with the microscope Olympus SZH based on the principle of transmitted light, a projection lens with a single magnification and eyepiece with 2.5-fold magnification. The image may be obtained through the camera DAGE MTI CCD72.

A representative piece of each material to be analyzed is placed on the object table of the microscope and get a clear image on the screen of the video when adjusting zoom microscope at 10 x magnification. The area carrying the cross section is determined from operational measurements of representative areas. The result of the calculation program Quantimet represents the mean value and standard deviation for each sample.

Fit the original film for producing a three-dimensional film with holes in accordance with the present invention is a thin, solid, continuous film of thermoplastic polymeric material. This film may be vapor permeable or vapor-proof; it can be a relief or nieletni; it can be treated in a corona discharge from one or both of its major surfaces or it may be free from such treatment by corona discharge; it can be treated with surface-active agent after the formation of the film by N. the bearing surface-active substances in the form of a coating on the film, application of surfactants on the film by spraying or printing, or a surfactant may be included in the form of a mixture of thermoplastic polymeric material before the formation of the film. The film may contain any thermoplastic polymeric material, including polyolefins such as high density polyethylene, linear low-density polyethylene, low density polyethylene, polypropylene; copolymers of olefins and vinyl monomers, such as copolymers of ethylene and vinyl acetate or vinyl chloride; polyamides; polyesters; polyvinyl alcohol and copolymers of olefin and acrylate monomers, such as copolymers of ethylene and ethyl acrylate and ethylenemethacrylic, but thermoplastic polymeric materials are not limited to the above. Can also be used films containing a mixture of two or more of these polymeric materials. Elongation (elongation) in the machine direction (MD) and cross direction (CD) of the original film, which should be formed by the holes should be at least 100% when you define it in accordance with test No. D-882 standard American society for testing and materials, performed on the test device Instron speed clamping jaw 50 inches per minute (127 cm per minute). The thickness of the original p is Enki preferably is uniform and can be in the range of from about 0.5 to about 5 mils, or from about 0.0005 inch (0,0013 cm) to about 0.005 inch (0,076 cm). Can be used in conjunction extruded films, and films that have been modified, for example, by processing the surface-active substance. The original film can be manufactured by any known method, such as casting, extrusion or extrusion injection blow.

The method of forming holes in the film in accordance with the present invention involves placing the film on the surface of the support element with relief. The film is exposed to a large pressure drop of the fluid when the film is on the supporting element. The differential pressure of the fluid which may be liquid or gaseous, causes the film to make the surface topography of the support element with relief. If the supporting element with the relief has made holes in it, parts of the film located above the holes, can be destroyed under the action of pressure difference of the fluid to create a film with holes. Method of forming film with holes are described in detail in U.S. patent 5827597, issued in the name of James, and others, incorporated into the present application by reference.

Such a three-dimensional film with holes preferably formed by placing a thermoplastic film from edge to edge surfaces of the support element with holes and with a relief corresponding to a given end is th form of a film. The stream of hot air is directed onto the film to increase its temperature in order to cause softening. After that, the film is exposed to vacuum to conform in shape to the shape of the surface of the support element. Parts of the film located above the openings in the support element, optionally stretched, until you are destroyed to create holes in the film.

Suitable supporting element with holes intended to receive the data of three-dimensional films with holes, is a three-dimensional topographical support element, fabricated by means of laser sculptural treatment of the workpiece. A schematic illustration is shown as an example, the workpiece which has been subjected to laser sculpture processing to convert it into a three dimensional topographical support element shown in figure 2.

The workpiece 102 includes a thin-walled tubular cylinder 110. The workpiece 102 is untreated plots 111 surface and subjected to laser sculptural treatment of the Central portion 112. The preferred preparation for getting the support element according to this invention is a thin-walled seamless tube made of acetal, which had been cleared of all residual internal stress. gotowka (the workpiece) has a wall thickness of from 1 to 8 mm, more preferably from 2.5 to 6.5 mm is Given as an example, the workpiece intended for use in the formation of the support elements have a diameter of from one to six feet and have a length in the range from two to sixteen feet. However, these dimensions represent the subject in a constructive choice. The workpiece to be machined can be used in other forms and compositions of materials, such as acrylic resins, urethanes, polyesters, polyethylene with high molecular weight and other polymers that can be processed by a laser beam.

Figure 3 shows a schematic illustration of a device for laser sculptural treatment of the support element. The original tubular blank 102 mounted on the respective mandrel or core 121, which ensures the preservation of the cylindrical workpiece and the possibility of rotation around its longitudinal axis in bearings 122. The actuator 123 rotational motion is provided for rotation of the mandrel 121 with adjustable speed. The generator 124 of the control pulses of the rotation is connected with the mandrel 121 and monitors the rotation of the mandrel 121, so that its exact radial position is always known.

One or more guides 125 are parallel to the mandrel 121 is mounted outside (zone) of rotation of the mandrel 121, when this is specified guides 125 provide the ability to move the carriage 126 along the entire length of the mandrel 121 while maintaining a constant gap relative to the upper surface 103 of the workpiece 102. The actuator 133 of the carriage moves the carriage along the guide rails 125, while the generator 134 pulses carriage control monitors the lateral position of the carriage relative to the workpiece 102. Table 127 to focus mounted on the carriage. Table 127 for focusing installed in the guide rails 128 to focus. Table 127 to focus ensures orthogonal relative to the moving carriage 126, and provides a means of focusing lens 129 relative to the upper surface 103. The actuator 132 for focusing is provided for positioning table 127 to focus and ensure the focusing lens 129.

To the table 127 to focus attached lens 129, which is fixed in the nozzle 130. The nozzle 130 is a means 131 to enter the gas under pressure to the nozzle 130 for cooling and maintaining the cleanliness of the lens 129. The preferred nozzle 130 for this purpose is described in U.S. patent 5756962, issued in the name of James and others, which is included in this application by reference.

On the carriage 126 is also mounted mirror 135 to the final rejection, which directs the laser beam 136 in the focusing lens 129. Laser 137 is located remotely, while it is provided with a possible mirror 138 to reject beam intended for the direction of the beam to the mirror 135 to end off the drop of the beam. Despite the fact that there is a possibility of installation of laser 137 directly on the carriage 126 and elimination of mirrors for the deflection of the beam, spatial constraints and the connection of the laser with the power system for General use do a remote installation of the much more preferred.

When power is applied to the laser 137 emitted beam 136 is reflected by the first mirror 138 to reject beam, then mirror 135 to the end deflection of the beam, which sends it to the lens 129. The trajectory of the laser beam 136 is configured such that, if the lens 129 is removed, the beam would pass through the longitudinal centerline of the mandrel 121. In the presence of lens 129 in a predetermined position of the beam can be focused on, below the top surface 103, the upper surface 103 or near the top surface 103.

Although this device can be used with many different lasers, the preferred laser is a fast flow laser carbon dioxide, is capable of producing a beam with a nominal capacity of up to 2500 watts. However, it can also be used methanoproline lasers carbon dioxide with a rated power of 50 watts.

Figure 4 is a schematic illustration of a system control device for laser sculpture processing in Figure 3. During operation of the device for laser the th sculptural processing control variables the values of the focal length, the speed of rotation and speed of the motion is transmitted from the host computer 142 via connection 144 to the computer 140 to control the actuators. The computer 140 for drive control controls the focal length by means of the actuator 132 table for focus. The computer 140 for drive control controls the speed of rotation of the workpiece 102 by means of the actuator 123 rotational motion and generator 124 of the control pulses of the rotation. The computer 140 for drive control controls the speed of movement of the carriage 126 by means of the actuator 133 carriage and generator 134 of the control pulses of the carriage. The computer 140 to control the actuators also informs the host computer 142 on the status of the actuators and possible errors. This system provides reliable position control (position control) and actually provides a separation surface of the workpiece 102 in small areas called pixels, each pixel consists of a fixed number of pulses of the drive control of the rotational motion and a fixed number of pulses of the drive control movement. The host computer 142 also controls the laser 137 through connection 143.

Subjected to laser sculpture processing, three-dimensional topographical support member can be made several is likemy ways. One method of manufacture of such a support element is a method comprising a combination of laser firmware and laser milling the surface of the workpiece.

How laser firmware machined parts include shock firmware, the firmware activation on the go (fire-on-the-fly) and firmware with the raster scan.

The preferred method is the firmware with the raster scan. In this approach, the pattern is reduced to a rectangular recurring element 141, the example of which is shown at 11. This repetitive element contains all the information needed to obtain a given terrain. When using this repeating element like the element of the mosaic image and placing as end-to-end and side by side the result is a specified relief of larger size.

Repeating element 141 is additionally divided into many smaller rectangular elements or "pixels", 142, forming a grid. Despite the fact that they usually are square, for some purposes it may be more convenient to use pixels with different sizes. The pixels themselves are dimensionless, and the actual image sizes are set during processing, that is, the width 145 of the pixel and the length 146 of the pixel are set only during the actual operation of the firmware. In BP the mja firmware the length of the pixel set in accordance with the size, which corresponds to the selected number of pulses from the generator 134 of the control pulses of the carriage. Similarly the width of a pixel set in accordance with a size that corresponds to the number of pulses from the generator 124 of the control pulses of the rotational movement. Thus, for ease of explanation, the pixels on Figa shown is square, but the pixels do not have to be square, but they must be rectangular.

Each column of pixels represents one pass of the workpiece past the focal point of the laser. This column is repeated as many times as needed for full coverage of the workpiece 102. A white pixel means a command to shut down the laser, each black pixel means the command to activate the laser. This results in a simple binary file of ones and zeros, where 1, or white, means the team for the laser to shut off, 0, or black, it means the command for the laser to activate.

If we refer again to Figure 4, it is necessary to specify that the contents of the file for engraving is transmitted in binary form, where 1 is off and 0 is the inclusion of the main computer 142 laser 137 through connection 143. By changing the period of time between commands duration the team adjusted to match the pixel size. After the completion of each column in the file of this column again processed, or repeats until then, while processing the entire circumferential periphery will not be completed. While the commands column, the actuator moving slightly moved. The movement speed is set such that at the completion of etching in the circumferential direction of the actuator movement moves the focusing lens to the width of a column of pixels, and processed the next column of pixels. This continues until you reach the end of the file and the file is back again in the direction of the axial dimension, while the full width will not be achieved.

In this approach, in each iteration produces a number of narrow slits in the material, rather than a large hole. Because these cuts are precisely aligned to line up next and to provide some overlap, the cumulative result is a hole.

The most preferred way of getting subjected to laser sculpture processing, three-dimensional topographical support elements is a method using modulation of the laser radiation. Modulation of the laser radiation is performed by gradually changing the laser power from pixel to pixel. PR is the modulation of the laser radiation simple commands to enable or disable when flashing with the raster scan are replaced by commands which provide regulation - on the basis of a consistent scale - power laser radiation for each individual pixel file modulation of the laser radiation. Thus, the three-dimensional structure can be attached to the workpiece in a single pass through the workpiece.

Modulation of laser radiation has several advantages compared to other methods of obtaining three-dimensional topographical support member. Modulation of laser radiation allows to obtain a single, seamless support element without inconsistencies relief caused by the presence of a seam. When modulation of the laser radiation treatment of the support element is completed in one operation instead of multiple operations, resulting in increased efficiency and reduced costs. Modulation of laser radiation allows to eliminate the problems associated with the exact combination of reliefs that can be a problem when multi-stage sequential work. Modulation of laser radiation also allows you to create topographic elements (signs) with complex geometry at a considerable distance. By changing the commands to the laser, it is possible to accurately adjust the height (depth) and shape of the element, and can be formed elements that vary continuously in cross section. In addition, when the laser is sculptural treatment can preserve the regular position of the holes relative to each other.

If you again refer to Figure 4, it shall be noted that during the modulation of the laser radiation the main computer 142 may send commands to the laser 137 in a format other than a simple format "enabled" or "disabled". For example, a simple binary file can be replaced with 8-bit (byte) format, which provides the possibility of changes in the radiation power emitted by the laser, 256 possible levels. When using byte format command "11111111" means a command to shut down the laser, "00000000" means a command to the laser radiation with the full power and such team as "10000000", means a command to the laser radiation with a power of constituting half of the total useful power laser radiation.

File for modulation of the laser radiation can be generated in a variety of ways. One such way is to create a file graphically through the use of the scale of gray levels for a computer image with 256 levels of brightness. In the picture with the grey scale, black can mean full capacity, and white can mean a lack of power, with varying levels of gray between them, means intermediate power levels. A number of computer graphics programs can be used to visualize or create such a file for laser sculptural education is ODI. When using such a file, the power emitted by the laser is modulated on a pixel by pixel and, therefore, can provide immediate sculptural processing three-dimensional topographical support member. Although there is described an 8-bit byte format, instead it can be used with other levels, such as 4-bit, 16-bit, 24-bit, or other formats.

Suitable laser designed for use in the system of modulation of laser radiation for laser sculpture processing is fast flow laser carbon dioxide with an output of 2500 watts, although it may be used a laser with a lower power output. It is critical that the laser had the ability to switch power levels as quickly as possible. The preferred switching frequency is at least 10 kHz, and even more preferable is the frequency of 20 kHz. High frequency switching power necessary to enable the processing of a greater number of pixels per second.

Figure 5 is a graphic image file for modulation of laser radiation, including recurring item a, which can be used for the formation of the support element, intended for the manufacture of plank the holes, shown in Figa-1E. Figa is an enlarged portion of the file for modulation of laser radiation, shown in figure 5.

Fig.5b is a graphic image file for modulation of laser radiation, including repeating element 141b, which can be used for the formation of the support element, intended for the manufacture of the film with holes, shown in Fige-1j. Figs is an enlarged portion of the file for modulation of laser radiation, shown in Fig.5b, which corresponds to the portion of the file, surrounded by a circle "5C" Fig.5b. Fig.5d is an enlarged portion of the file for modulation of laser radiation, shown in Fig.5b, which corresponds to the portion of the file, surrounded by a circle "5d" Fig.5b. File is an enlarged portion of the file for modulation of laser radiation, shown in Fig.5b, which corresponds to the portion of the file, surrounded by a circle "5e" Fig.5d.

Figure 5-5e black zones (areas) I mean the pixels at which the command is issued to the laser radiation at full power, resulting in a hole in the support element, which corresponds to the holes 16 in the three-dimensional film 10 with holes, illustrated in Figa-1d. Light gray zone 155 indicate pixels where the laser receives commands on zlecenie with very low power level, bringing the surface of the support element remains essentially intact. The data zone of the support element correspond to the protrusions 11, shown in Figa. Other areas shown on Figure 5-5e, which are shown with different gray levels indicate the corresponding power levels of laser radiation and correspond to different elements (signs) of the films 10 and 100, shown respectively at Figa-1d and Five-1j. For example, zone 157 and 159 correspond to the transverse elements 14a and 14b of the film 10 and the film 100.

6 is a micrograph of part 161 of the support element after etching it by using the file shown in Figure 5. Relief (pattern) on the part of the support element shown in Fig.6, is repeated on the surface of the support element to obtain thereby repeating relief of the film 10 shown in Figa-1d.

Figa is a micrograph of part 162 of the support element after etching it by using the file shown in Figure 5. Relief (pattern) on the part of the support element shown in Figa, is repeated on the surface of the support element to obtain thereby a film having a repeating pattern in the form of a butterfly this type, as shown in Figa-1j. Fig.6b is a magnified portion of the support element shown in Figa, which corresponds to the hour and the support element on Figa, surrounded by a circle “6”b. After completion of the laser sculptural treatment of the workpiece can be mounted on the structure shown in Fig.7, for use as a support element. Two end cap 235 is inserted into the inner space of the machined workpiece 236 with an area of 237 subjected to laser sculptural treatment. These end caps can be inserted by a hot landing, the press fit attached by mechanical means such as clamps 238 and screws 239 similar to the one shown, or other mechanical means. End caps are used to ensure the preservation of the machined workpiece is round, bringing the finished unit is in motion and mount the finished design in the device for the formation of holes.

The preferred device for the manufacture of such three-dimensional films with holes is shown schematically in Fig. As shown here, the support element is carried out by rotating the drum 753. In this particular device the drum rotates in the counterclockwise direction. On the outside of the drum 753 there is the nozzle 759 for hot air designed to create a curtain of hot air intended for immediate influence on the film, based on the subject of laser SKU is iptures processing supporting element. Provides a tool for removal of the nozzle 759 for hot air to avoid excessive heating of the film when it is stopped or moving at a low speed. Blower 757 and heater 758 interact to supply hot air into the nozzle 759. Directly opposite the nozzle 759 inside the drum 753 is a vacuum cylinder 760. Vacuum head 760 executed with the ability to regulate its position in the radial direction and located so that it contacts with the inner surface of the drum 753. Provided 761 source of vacuum for continuous creation of vacuum in the suction head 760.

Area 762 cooling is provided in the inner space of the drum 753 and is in contact with the inner surface of the drum 753. Area 762 cooling provided by source 763 vacuum designed for cooling. In the area of 762 cooling source 763 vacuum designed for cooling sucks ambient air through the holes formed in the tape, for fixing the relief created in the area of the holes. Source 763 depression is also a tool for holding the film in place in the area of 762 cooling drum 753, and is a tool that provides isolation film from impacts caused by the tension created by winding the film the village of the f holes in it.

On the subject of laser sculpture processing, the supporting element 753 posted by thin continuous film 751 of thermoplastic polymer material.

The magnified image is surrounded by a zone Fig shown in Fig.9. As shown in this embodiment, the suction head 760 has two vacuum slot openings 764 and 765, spanning the entire width of the film. However, for some purposes it may be preferable to use separate sources of vacuum to each vacuum slot. As shown in Fig.9, the vacuum slot 764 creates the zone of retention of the original film, when she's coming to the air knife 758. The vacuum slot 764 is connected to the vacuum source through the channel 766. It provides reliable fastening of the incoming film 751 to the drum 753 and provides isolation from the impacts caused by the tension of the incoming film and due to the unwinding of the film. It also provides the straightening film 751 on the outer surface of the drum 753. The second vacuum slot 765 limits the formation area of the holes under the action of vacuum. Directly between the slotted holes 764 and 765 is an intermediate support strap 768. Vacuum head 760 is positioned in such a way that the place of impact of the veil 767 of hot air directly above the intermediate support strap 768. Hot air is supplied at a sufficient temperature, under a sufficient angle relative to the film and at a sufficient distance from the film to cause softening of the film and making it deformability under the action of the force applied to it. The geometry of the device ensures that the film 751, being softened by a veil 767 hot air will be isolated from the effects of tension through the retaining slot 764 and zone 762 cooling Fig. The 765 area of education openings under the action of the vacuum is located directly next to the veil 767 of hot air, thereby minimizing the time during which the film will be hot, and to prevent excessive heat transfer to the reference element 753.

As shown in Fig and 9, a thin flexible film 751 is fed from the supply roll 750 over the guide roller 752. Roller 752 can be attached to a torque sensor or other mechanism for regulating the tension when applying the incoming film 751. After this film 751 is put into intimate contact with the supporting member 753. Then the film and the supporting element is moved into the area 764 rarefaction. In the area of 764 vacuum pressure differential further ensures the entry of the film into tight contact with the supporting member 753. In this case, the vacuum pressure provides the insulation film from tension when applying. After that, the combination of film and the support element is held under the veil 767 of hot air. The curtain of hot air provides heating the combination of film and the support element, thereby causing softening of the film.

Then the combination of film, softened by heat, and the support element is held in the 765 area of rarefaction, where the heated film is deformed under the action of pressure difference and acquires the topography of the support element. Lots of heated films, which are located above the carrying sections (zones holes) in the reference element, additionally deformed in the area of the holes of the support element. If the heating and deforming force is sufficient, the film over the areas of the holes of the support element is destroyed with the formation of holes.

The combination of still hot film with holes and the support element is then moved to the area 762 cooling. In the cooling zone a sufficient amount of ambient air drawn through the film, which already have holes for cooling both the film and the support element.

After that, the cooled film is removed from the support element around the guide roller 754. Guide pulley 754 can be attached to a torque sensor or other mechanism for regulating the tension in a winding. The film summertime then is supplied to roll 756 finished material, where it is wrapped.

Design kits for testing

Sets #1 and #5 according to the invention, designed for testing were designed to illustrate the improved properties of the films with holes in accordance with the present invention. Were also created comparative sets #2, #3 and #4. Each of the sets #1-#5 for testing included a covering layer, transport layer, absorbent core and the barrier layer. Transporting layer, the absorbing core and the barrier layer used in sets #1-#5 for the tests were as follows:

(a) transporting layer obtained by pneumococcal material Visorb 3003 with a density of 100 g/cm2industrial manufactured and shipped to market by Buckeye Technologies Inc., Memphis, Tennessee;

(b) absorbing core product Novathin with a density of 208 g/m2industrial produced and supplied to the market by the company Rayonier Inc., Jessup, GA., c code product 080525, and

(C) a barrier layer made of conventional polyethylene whole film.

The different layers of kits for testing were glued to each other in the usual manner through the use of standard and industrial manufactured structural glue.

Each of the coating materials intended for test sets #1-#3 and #5, described below, was formed from the industry is manufactured by and available on the market film basics code product DPD81715 supplied by Tredegar Corporation, Sao Paulo, Brazil.

Kit #1 for testingwas formed by that first created the film with holes in accordance with the invention similar to that shown in Figa-1d and described above (hereinafter referred to as film #1). Film #1 was created such that the upper surface of the transverse elements 14a and 14b were recessed relative to the upper surface of the film 15 mils, and the width "a" of each of the transverse elements 14a and 14b was 10 mils. The length of each cross member 14a was 100 mils and the length of each cross member 14b was 60 mils. When measuring tapes #1, it was found that it has the average area throughput cross-section constituting 26%. To complete the education kit #1 for test film #1 is superimposed over the transport layer, described above, to thereby form a test set, which includes, from top to bottom covering element transporting layer, the core and the barrier layer.

Kit #2 for testingwas formed by that first created the film with holes (hereinafter referred to as film #2), which was identical to the film #1 in all respects except that the transverse elements 14a and 14b are arranged such that they were coplanar the top surface of the film, that is, the transverse elements were not recessed relative to the upper surface of the film. It was determined that the film #2 had an average cross-sectional area, comprising 26%. To complete the education kit #2 for test film #2 is superimposed over the transport layer, described above, to thereby form a test set, which includes, from top to bottom covering element transporting layer, the core and the barrier layer.

Kit #3 for testingwas formed by that first created the film with holes (hereinafter referred to as film #3), which was identical to the film #1 in all respects except that the transverse elements 14a and 14b were completely excluded, that is, the film included many holes hexagonal shape. In the measurement, it was determined that the film #3 had an average cross-sectional area, which is approximately 39%. To complete the education kit #3 for test film #3 is superimposed over the transport layer, described above, to thereby form a test set, which includes, from top to bottom covering element transporting layer, the core and the barrier layer.

Kit #4 for testingwas formed by removing the covering layer from a film with holes(hereinafter referred to as film #4) with products Sempre Livre Ultra Thin with wings, manufactured by Johnson & Johnson Ind. E. Com. Ltda., Brazil. To complete the education kit #4 for test film #4 is superimposed over the transport layer, described above, to thereby form a test set, which includes, from top to bottom covering element transporting layer, the core and the barrier layer.

Kit #5 testingwas formed by that first created the film with holes in accordance with the invention similar to that shown in Fige-1j described above (hereinafter referred to as film #5). The upper surface of the transverse elements 14a and 14b were recessed relative to the upper surface of the film of 4.5 mils, and the width of each transverse element 14a and 14b respectively 5 mil and 9 mil. The length of each of the transverse elements 14a and 14b respectively 100 mil and 60 mil. The film had a lot of patterns in the form of butterflies larger this type, as shown in Figa, and many patterns in the form of butterflies smaller size of this type, as shown in Figa. The size of the butterfly to a larger value was 1.0 inch when measured from the most distal point of one wing to the most distal point of the other wing and 0.6 inches when measured at the most narrow constricted part of the butterfly. The size of the butterfly smaller size was 0.6 inch in from erenee it from the most distal point of one wing to the most distal point of the other wing and 0.4 inch when measured in the most narrow constricted part of the butterfly. Butterflies larger and smaller sizes were evenly distributed so that the sample film with holes having a size of 9 inches (length) x 6 inches (width), had 9 large and 9 small butterflies, evenly distributed through the sample film. Each of large and small butterflies had boundary element 108 and a lot of holes 106 located within the area bounded by the boundary element. Boundary element 108 of each of the butterflies larger had a width of 78 mil and boundary element 108 for each of the butterflies smaller size had a width of 31 mils. The surface of the film within section 109 of the film, a limited boundary elements 108 for butterflies as larger and smaller, was recessed relative to the upper surface of the film on the amount of approximately 4.5 mils. Zone limited boundary element butterflies as smaller and larger, had a lot of holes 106, with each of the holes 106 had an elliptical shape with a major axis length of 43 mils and the minor axis length of 16 mils. The distance “n” between the holes 106, adjacent in the horizontal direction was 40 mils and the distance o between the openings adjacent in the vertical direction, was $ 34 million.

Five samples of each of the sets #1-5 for testing, described above, were created and tested fordetermination time of penetration of the fluid (FPT - Fluid Penetration Time), re-wetting (in grams) and the rate of dropout. Thus, all were created twenty-five samples (five for each test set). Test methods for determining the time of penetration of the fluid (FPT), re-wetting and dropout rate are discussed below in more detail. The same five samples were used in each test. It is a pure sample should not be used for each test, and instead, the same sample was subjected to the penetration test fluid, and then on re-wetting, and then test to determine the rate of dropout.

Used in the test fluid which is used for penetration test fluid, the test repeated wetting and tests to determine the rate of dropout in accordance with the testing procedures, described below, can be any of the synthetic menstrual fluid environment with the following properties: (1) viscosity component of about 30 centipoise, and (2) the following indicators of the intensity of the color (saturation, color tone) Hunter: L=approximately 17, a=approximately 7, b=about 1.5. Figures L through Hunter for use when testing the fluid measured is by placing a quantity used in the tests, the fluid in the glass Cup to a depth of 0.25 inches.

The time of penetration of the fluid

The time of penetration of the fluid is measured by placing a sample that is to be tested under the plate with a hole designed to test the penetration of the fluid. Plate for testing is rectangular and made of Lexan material and has a length of 25.4 cm (10.0 inches) for width 7.6 cm (3.0 inch) and a thickness of 1.27 cm (0.5 inch). The plate is formed through concentric, elliptical hole having a large axis, which has a length of 3.8 cm and parallel to the direction of measurement of the length of the plate, and the minor axis, which has a length of 1.9 cm and parallel to the direction of measuring the width of the plate.

The orifice plates have Central on the sample that is to be tested. Graduated syringe with a volume of 10 cm3containing 7 ml of fluid used for testing, held over the plate with a hole so that the output end of the syringe was placed over the hole at a distance from it of about 3 inches. The syringe was held horizontally, parallel to the surface of the plate used in the test, then the fluid was pushed out of the syringe at a rate that allows fluid to flow in a jet, vertical with respect to the plate, the COI is lsemaj test, in the hole, and the stopwatch was started at the moment when the fluid first reaches the sample to be tested. The stopwatch was stopped when the sample surface first becomes visible in the hole. The duration measured by the stopwatch, represents the time of penetration of the fluid. The average time of penetration of the fluid (FPT) is calculated from the test results of five samples. Thus, the average penetration time of the fluid was determined for each of the sets #1-#5 for testing by testing five samples for each test set.

Potential re-wetting

Potential re-wetting is a level of power strip or other products to retain fluid within its structure, when the gasket contains a relatively large amount of fluid and exposed to external mechanical pressure. Potential re-wetting define and set using the following procedure.

The device required for testing, includes a stopwatch with an accuracy of 1 second and a duration component, at least 5 minutes, graduated glass cylinder with a capacity of 10 ml and an inner diameter, constituting approximately 12 mm, some is the second quantity of fluid, used at trial, and the orifice plates used to test the penetration of the fluid.

The device additionally includes a weighing device or scale, capable of weighing to ± 0.001 g, a number of sponges NuGauze General purpose (10 cm x 10 cm) (4 inches x 4 inches) - four from the company Johnson & Johnson Medical Inc., product code 3634 (included Johnson & Johnson Hospital Services, referring to the order number 7634), standard payload 2,22 kg (4.8 lbs)with dimensions of 5.1 cm (2 inches) 10.2 cm (4.0 inches) to approximately 5.4 cm (2.13 inches), which provides the application of pressure to 4.14 kPa (0.6 psi) on the surface with dimensions of 5.1 to 10.2 cm (2 inches by 4 inches).

Two sponges bend so that the bent edges are located opposite each other, to create the layered structure of 16 layers with dimensions of approximately 5 cm to 10 cm 16-layer sponge for each sample strip to be tested, then weighed with an accuracy to the nearest division of 0.001 gram. Pre-treated sanitary pad, or other product is placed on a flat surface without removal of the removable paper and so that the covering layer facing upwards.

After the fluid used in the test, was submitted through the hole in the plate as the test for determining in which the time of penetration of the fluid, described above, and as soon as the covering layer of the first strip will be visible through the upper surface of the fluid, start the stopwatch and measure the time interval of 5 minutes. After 5 minutes, the plate with the hole and remove the gasket is placed on a hard, flat surface so that the covering layer facing up. One pre-weighted multi-layer sponge with 16 layers, placed on the moistened area and center relative to the wetted area and the standard payload 2,22 kg is placed on top of the layered sponge with 16 layers. Immediately after placing the sponge and load on the gasket start the stopwatch and after the expiry of the period of time of 3 minutes, standard cargo and multi-layered sponge with 16 layers, quickly remove. The mass of multi-layer sponge with 16 layers, in the wet state is measured and recorded with an accuracy to the nearest division of 0.001 gram. The value of re-wetting then calculated as the difference in grams between the mass of moistened layered sponge with 16 layers, and the dry weight of layered sponge with 16 layers.

The above measurement is repeated for five samples and, if necessary, the cargo is wiped clean before each test. Average potential re-wetting is obtained by obtaining the average value of the values, obtained for five samples. Thus, the average potential of re-wetting was determined for each of the sets #1-#5 for testing by testing five samples for each test set.

When testing according to the above method, it is important that the tests were carried out at a temperature of 21±1 degrees Celsius and at a relative humidity of 65±2%.

The dropout rate

The following methodology was used to determine the ability of the facing to the body of material to create the appearance of less soiled items after use, that is, the rate of dropout. After exposure to each of the sets #1-5 the penetration test fluid and the test repeated wetting immediately receive their image, after checking the fluid, with a 50-fold magnification using a microscope Scalar USB model UM02-SUZ-01, which uses a built-in light source. Microscope Scalar has been configured with the saturation and color intensity when automatic exposure, which is possible. Five images blurred areas of each sample were obtained and stored as image files in natural colors size 640 x 480 pixels with bmp format (standard format for raster graphics files, developed by the Corporation is the situation for Microsoft Windows and OS/2) with a color depth of 24 bits per point (24 bit true-color). Thus, they received a total of 25 images (5 images per sample for each of 5 designs).

Then the original image in the format "bmp" were discovered in the software Image Pro Plus version 4.0, which is a product of Media Cybernetics, LP. Then using the software product Image Pro Plus image were converted from their original format 24 bit true-color in the image, corresponding to 8-bit grey scale. Function histogram of the software product Image Pro Plus was then applied to images, and then histograms were constructed indicators of the intensity of gray images. This provides the possibility of counting the number of pixels at a certain gray level, which ranges from 0 for black to "255" is white. The data from the histograms were then transferred into a spreadsheet in Microsoft Excel 2000 by using dynamic data exchange (DDE) (standard software Protocol in Windows).

When dynamic data Excel 2000, then a working table that contains 25 columns, each of which contains 256 rows. Each of the columns in the worksheet contains values of the histogram for each image. Each column consists of 256 values, which represent the counted number of pixels in the image, which is s that have a corresponding value from 0 to 255. For each row was then obtained the average value to generate an average histogram for this specific material.

Typical average histogram shows a bimodal distribution in the gray zone, showing the stained area of the test set, and the white areas showing an unsullied zone of the test set. The study of the middle histograms showed the presence of a plateau between the gray area and the white area and that the entire stained area was determined by the level of gray that make up 90 or less. Thus, the stained area of the material can be characterized by the sum of the gray levels from 0 to 90, while the lower levels are typical for areas with less intensity grey and thereby providing better masking. The amount of levels of gray that make up 90 or less, is a "dropout rate". The average dropout for each test set was obtained by averaging the dropout rate obtained for each of the five test specimens for this test set. Figure 10 represents a typical average histogram showing the intensity of package for absorbent articles having a film with holes in accordance with the present invention as a coating layer of this product.

Pre is presented below table shows the average values of time of penetration of the fluid, the average re-wetting (in grams) and the dropout rate for sets #1-#5 for testing.

Test setThe average time of penetration of the fluid (in seconds)The average re-wetting (in grams)The average dropout
#138,50to 0.03250841,26
#245,520,04078587,00
#321,550,052114930,20
#446,500,024111959,93
#530,430,03755794,13

As can be seen from the above table, the sets #1 and #5 for testing, created through the use of films with holes in accordance with the present invention provide a unique combination of abilities clicks the development of fluid and masking properties.

Although we have described above specific embodiments of the invention, provided that the present application covers the modifications and variations of the invention provided that they are within the scope of the attached claims and their equivalents.

1. Three-dimensional film with holes, suitable for use as components products for personal hygiene, containing:
the first flat surface in a first imaginary plane;
the second planar surface of the second imaginary plane located below the first imaginary plane;
the first set of apertures;
at least one element overlying each of the specified first set of holes for education, thus, many smaller holes, with each of the many smaller holes communicated with the corresponding hole of the first set of holes, and the element overlying each of these holes has an upper surface located in a third imaginary plane and the third imaginary plane located below the first imaginary plane,
when this is specified, at least one element overlying each of a specified set of holes, contains:
the first transverse element, overlying each of the indicated what about the numerous holes, and
the second transverse element, overlying each of the specified set of holes.

2. Three-dimensional film with holes according to claim 1, in which the holes of the first set of holes is formed from the first imaginary plane to the third imaginary plane.

3. Three-dimensional film with holes according to claim 1, in which the upper surface of the element, overlying each of the specified set of holes, essentially parallel to the first imaginary plane and the second imaginary plane.

4. Three-dimensional film with holes according to claim 1, in which the third imaginary plane located below the first and second imaginary planes.

5. Three-dimensional film with holes according to claim 1, in which the first transverse element intersects the second transverse element.

6. Three-dimensional film with holes according to claim 5, in which the first transverse element and the second transverse element are orthogonal relative to each other.

7. Three-dimensional film with holes according to claim 1, and this film has many holes bumps, located on the first flat surface.

8. Three-dimensional film with holes according to claim 1, in which each of these elements overlapping each of the first set of holes has a width in the range of from about 4.0 mm to about 24,0 mm

9. Treme the Naya film with holes according to claim 1, in which each of the first and second transverse elements has a width in the range of from about 4.0 mm to about 24,0 mm

10. Three-dimensional film with holes according to claim 1, and this film has a surface carrying the cross section in the range from approximately 20% to approximately 30%.

11. Three-dimensional film with holes, suitable for use as components products for personal hygiene, containing:
the first essentially flat surface located in a first imaginary plane;
the second essentially planar surface located in the second imaginary plane;
many interconnected frame parts, each frame parts has at least first and second inner walls located opposite each other and at a distance from each other;
many of transverse elements, each of the transverse element extends from one of the inner walls of one of the frame parts to the opposing second inner wall of one of the frame parts, each of the transverse elements has an upper surface located in an imaginary plane located below the first imaginary plane;
many holes passing from the at least first planar surface to the second flat surface, whereas the om each of these holes is limited, at least one of the frame parts and at least one of the transverse elements, with many transverse elements contains:
first set of transverse elements, each of the first set of transverse elements passes from one of the end zones of the framework part to the opposite end zone of the frame part, and
the second set of transverse elements, each of the second set of transverse elements passes from one of the side walls of the frame portion to the opposite side frame parts.

12. Three-dimensional film with holes in claim 11, in which the upper surface of each of the transverse elements are essentially parallel to the first imaginary plane and the second imaginary plane.

13. Three-dimensional film with holes indicated in paragraph 12, in which the upper surface of each of the transverse elements is located in a third imaginary plane below the first imaginary plane and the second imaginary plane.

14. Three-dimensional film with holes in claim 11, in which each of the frame parts includes opposite spaced end zone and opposite spaced side walls.

15. Three-dimensional film with holes in claim 11, in which each element of the first set of transverse elements intersect with one element of in is showing many of the transverse elements.

16. Three-dimensional film with holes indicated in paragraph 15, in which each element of the first set of transverse elements is orthogonal with respect to one of the second set of transverse elements.

17. Three-dimensional film with holes in claim 11, in which each of the framework parts has essentially the shape of a hexagon.

18. Three-dimensional film with holes in claim 11, further comprising
many bumps going up from the first flat surface of the film.

19. Three-dimensional film with holes in claim 11, and this film has a surface carrying the cross section in the range from approximately 20% to approximately 30%.

20. Three-dimensional film with holes, suitable for use as components products for personal hygiene, containing:
the first flat surface in a first imaginary plane;
the second planar surface of the second imaginary plane;
many holes that pass, at least from the first flat surface to the second flat surface;
at least one element overlying each of a specified set of holes, and the element overlying each of these holes has an upper surface located in a third imaginary plane and the third imaginary plane located below the first in brahimaj plane,
when this is specified, at least one element overlying each of a specified set of holes, contains:
the first transverse element, overlying each of the specified set of holes, and
the second transverse element, overlying each of the specified set of holes.

21. Three-dimensional film with holes in claim 20, in which the upper surface of the element, overlying each of the specified set of holes, essentially parallel to the first imaginary plane and the second imaginary plane.

22. Three-dimensional film with holes in claim 20, in which the third imaginary plane located below the first and second imaginary planes.

23. Three-dimensional film with holes in claim 20, in which the first transverse element intersects the second transverse element.

24. Three-dimensional film with holes in item 23, in which the first transverse element and the second transverse element are orthogonal relative to each other.

25. Three-dimensional film with holes in claim 20 in which the film with holes has a lot of bumps located on the first flat surface.

26. Three-dimensional film with holes in claim 20, in which each of the elements that overlap each of the first set of holes has a width in the range of from about 4.0 mm to approximately the nutrient 24,0 mm

27. Three-dimensional film with holes in item 22, in which each of the first and second transverse elements has a width in the range of from about 4.0 mm to about 24,0 mm

28. Three-dimensional film with holes in claim 20, and the film has an area throughput cross-section in the range from approximately 20% to approximately 30%.

29. Three-dimensional film with holes according to claim 1, with the specified film with holes is a covering layer in absorbing product.

30. Three-dimensional film with holes in claim 11, and this film with holes is a covering layer in absorbing product.

31. Three-dimensional film with holes in claim 20, and this film with holes is a covering layer in absorbing product.

32. Three-dimensional film with holes, suitable for use as components products for personal hygiene, containing:
the first flat surface in a first imaginary plane;
the second planar surface of the second imaginary plane located below the first imaginary plane;
the first set of apertures;
at least one element overlying each of the first set of holes for education, thus, many smaller holes, with each of the many smaller holes communicates with the ACC is stoysin hole of the first set of holes, the element that overlaps each of these holes has an upper surface located in a third imaginary plane and the third imaginary plane located below the first imaginary plane;
the second set of apertures,
thus the second set of apertures visually distinguishable from the first set of holes.

33. Three-dimensional film with holes on p, while this film contains, at least, the first part comprising the first set of apertures, and at least a second part comprising a second set of apertures, and
the surface of the film in the second part is located below the first imaginary plane.

34. Three-dimensional film with holes on p, in which the holes of the second set of holes interact for education or drawing, or symbols, or combinations thereof.

35. Three-dimensional film with holes on p, in which the second set of apertures is surrounded by a boundary element, while the boundary element separates the first set of holes from the second set of holes.

36. Three-dimensional film with holes on p, in which each of at least one element overlying each of the first set of holes has a length of from about 30.0 mm to approximately 150,0 mm

37. Three-dimensional film from what Artemi on p, in which each of at least one element overlying each of the first set of holes has a width in the range of from about 4.0 to about 24,0 mm

38. Three-dimensional film with holes on p, and this film has a surface carrying section from approximately 20% to approximately 30%.

39. Three-dimensional film with holes on p, in which the third imaginary plane located below the first imaginary plane at a distance of from about 3.0 mm to about 17,0 mm

40. Three-dimensional film with holes, suitable for use as components products for personal hygiene, containing:
the first essentially flat surface located in a first imaginary plane;
the second essentially planar surface located in the second imaginary plane and the second imaginary plane located below the first imaginary plane;
many interconnected frame parts, each frame parts has at least first and second inner walls located opposite each other and at a distance from each other;
many of transverse elements, each of the transverse element extends from one of the inner walls of one of the frame parts to the opposite vtoro the inner wall of one of the frame parts, each of the transverse elements has an upper surface located in an imaginary plane located below the first imaginary plane;
the first set of apertures passing from the at least first planar surface to the second flat surface, with each of these holes is limited to at least one of the frame parts and at least one of the transverse elements;
the second set of apertures,
thus the second set of apertures visually distinguishable from the first
many of the holes.

41. Three-dimensional film with holes on p, this film contains, at least, the first part comprising the first set of apertures, and at least a second part comprising a second set of apertures, and
the surface of the film in the second part is located below the first imaginary plane.

42. Three-dimensional film with holes on p, in which the holes from the specified second set of holes interact for education or figure, or character.

43. Three-dimensional film with holes on p, in which the second set of apertures is surrounded by a boundary element, while the boundary element separates the first set of holes from the second set of holes.

44. Three-dimensional film with holes on p in which each is from, at least one element overlying each of the first set of holes has a length of from about 30.0 mm to approximately 150,0 mm

45. Three-dimensional film with holes on p, in which each of at least one element overlying each of the first set of holes has a width in the range of from about 4.0 to about 24,0 mm

46. Three-dimensional film with holes on p, and this film has a surface carrying section from approximately 20% to approximately 30%.

47. Three-dimensional film with holes on p, in which the third imaginary plane located below the first imaginary plane at a distance of from about 3.0 mm to about 17,0 mm

48. Three-dimensional film with holes on p, in which at least part of the surface of each of the framework elements are indented relative to the first imaginary plane.

49. Three-dimensional film with holes on p in which a specified part of the framework element is indented relative to the first imaginary plane at a distance of from approximately 2.0 mm to approximately 5,0 mm

50. Three-dimensional film with holes, suitable for use as components products for personal hygiene, containing:
the first flat surface in a first imaginary plane;
the second is a flat surface in the second imaginary plane;
many holes that pass, at least from the first flat surface to the second flat surface;
at least one element overlying each of a specified set of holes, and the element overlying each of these holes has an upper surface located in a third imaginary plane and the third imaginary plane located below the first imaginary plane;
the second set of apertures,
thus the second set of apertures visually distinguishable from the first
many of the holes.

51. Three-dimensional film with holes in item 50, while this film contains, at least, the first part comprising the first set of apertures, and at least a second part comprising a second set of apertures, and
the surface of the film in the second part is located below the first imaginary plane.

52. Three-dimensional film with holes in item 50, in which the holes of the second set of holes interact for education or figure, or character.

53. Three-dimensional film with holes in item 50, in which the second set of apertures is surrounded by a boundary element, while the boundary element separates the first set of holes from the second set of holes.

54. Three-dimensional film with holes in item 50, the cat is Roy each, at least one element overlying each of the first set of holes has a length of from about 30.0 mm to approximately 150,0 mm

55. Three-dimensional film with holes in item 50, in which each of at least one element overlying each of the first set of holes has a width in the range of from about 4.0 to about 24,0 mm

56. Three-dimensional film with holes in item 50, and this film has a surface carrying section from approximately 20% to approximately 30%.

57. Three-dimensional film with holes in item 50, in which the third imaginary plane located below the first imaginary plane at a distance of from about 3.0 mm to about 17,0 mm



 

Same patents:

Layered panel // 2323092

FIELD: aircraft industry.

SUBSTANCE: layered panel comprises at least two interconnected stacks of metallic layers and plastic layers reinforced with fibers. The stacks have intermediate section `at which at least one of the internal layers is discontinuous. All other layers including outer metallic layers are continuous. Within the material, one stack of layered composition is smoothly goes into the other without onset of stress concentration.

EFFECT: enhanced strength.

14 cl, 7 dwg

FIELD: chemical industry; other industries; methods and the heads for production of the laminate with the lengthwise-transversal orientation of the layers made out of the oriented films.

SUBSTANCE: the invention presents the laminate with the lengthwise-transversal orientation of the layers formed out of the films, from which at least two of them have mono-axial or unbalanced two-axial orientation, in which the main direction of the orientation in one of these films intersects the main direction of the orientation in other film and have the modifications of the surface properties executed in the certain tracery of these two films on those their surfaces, which are disposed inside the laminate and are connected with each other. The surface layers of the films located inside contain the set of filaments made out of the material produced by the joint extrusion, and are located so, that these two sets on two films intersect each other. The filaments may by used for control over the adhesion between the films and for reduction of the trend to delamination at the multiple bending. It allows to use the laminate in the capacity of the canvas cloth. In the combination with creation of the relief at least on one film, the main layer of which is made transparent for formation of the strips. At that the colored filaments attach the attractive visual effects to the laminate. The visual effect makes the laminate to look more heavy-gage.

EFFECT: the invention ensures, that the filaments used in the laminate may by used for control over the adhesion between the films, for reduction of the trend to delamination at the multiple bending allowing to use the laminate as the canvas cloth and the colored filaments attach the attractive visual effects to the laminate.

58 cl, 7 dwg, 3 ex

FIELD: laminated fire-proof materials.

SUBSTANCE: method involves applying fire-retarding material on tissue web to create the first discrete layer, wherein the fire-retarding material is based on emulsified polyvinylchloride; placing the second tissue web on the first one; covering the second tissue web with the same fire-retarding material to form the second discrete layer; arranging the third tissue web on the second one and simultaneously hardening the first and the second discrete layers.

EFFECT: increased thermal protection, fire-resistance, improved protection against poisonous agents and increased labor productivity.

1 tbl

FIELD: fire-resistant materials.

SUBSTANCE: invention relates to fabricating fire-resistant material suitable to make filter-type individual respiratory defense systems. Material contains textile sheet with, applied thereon, emulsion polyvinylchloride-based fire-retardant composition in the form of discrete layer. Material additionally has, on its reverse side, (i) a sorption layer constituted mainly by carbon-containing material with, applied on its both sides or on the side being in front of facing layer, discrete coating based on polyvinylchloride containing fire retardants, and (ii) reverse layer containing woven or unwoven material made from cotton, viscose, synthetic fibers or mixtures thereof.

EFFECT: acquired high fire-resistant and heat-resistant properties with high air permeability and thereby defense against poisons preserved.

2 cl, 2 dwg, 1 tbl, 2 ex

FIELD: fire-resistant materials.

SUBSTANCE: invention relates to fabricating fire-resistant material suitable to make filter-type individual respiratory defense systems. Material contains base in the form of cloth with, applied on one of its sides, discrete fire-retardant emulsion polyvinylchloride-based coating. Material additionally contains similar coating applied on its other side and, situated on its opposite sides, facing cotton/ester textile layer and reverse cotton textile layer. Base cloth consists of carbon-containing material.

EFFECT: enhanced fire-resistant and heat-resistant properties with high air permeability and thereby defense against poisons preserved.

1 dwg, 1 tbl

The invention relates to the production of flame resistant textile materials for filtration PPE

The invention relates to the production of flame-retardant textile material with a special coating for use in the manufacture of fire-resistant filter PPE

The invention relates to the production of non-woven fibrous-porous polymeric materials used as sorbents

FIELD: technological processes.

SUBSTANCE: method includes the following: dry laying of fibers with substantially even thickness from unlinked fibers with low moisture content within the area of residual moisture. Further the method includes transformation of fibers laying by pressing and impression into fibrous layer with creation of impressed pattern with compacted zones of linked fibers, in which fibers are connected to each other, substantially, by means of mutual binding, and moistening of fibrous web at least on one external side with water-latex mixture, depositing latex by means of drying with binding of fibers inside and outside zones of bound fibers.

EFFECT: improved absorbing ability and reduced dusting.

23 cl, 4 dwg, 3 tbl

FIELD: medicine.

SUBSTANCE: incontinency protector includes coating layer, protective layer and bulk absorber. A pocket is formed between non-absorbent material layer and coating layer. The non-absorbent material layer is elastic.

EFFECT: possible attachment of protector directly to genitals of user.

6 cl, 3 dwg

Hygienic product // 2371156

FIELD: cosmetology.

SUBSTANCE: invention refers to paper hygienic product such as a napkin, a hygienic pad, toilet paper, lavatory bowl packing, etc. Hygienic product consists of at least one protective paper layer with biocidal properties. Paper is obtained by introducing antimicrobial agent - biocide into paper mass before paper web is made. As biocide, there used is hydrosol exposed during 4-24 hours and containing 4.0-10.0 wt % of bentonitic powder modified with Ag+ or/and CU2+ ions and their content in the powder is 2.0-8.0 wt %. For dry paper web fibre there used is not more than 2.0 wt % of the modified powder. The product can be adsorbing and can contain water-resistant layer and surface layer made from nonwoven fabric or plastic film, or their combinations. Particle size of the modified bentonitic powder is not more than 150 nm. There can be used a mixture of bentonitic powders at their mixture ratio of 1-(0.3-0.5) accordingly. Deionised water is used for obtaining hydrosol.

EFFECT: there is provided achievement of the effect consisting in enlargement of range of biocidal properties of hygienic products, enhancement of efficiency of the prolonged action of antibacterial and antimycotic properties of the biocide with traditional process additions and fillers of the manufacturing process of such products.

8 cl, 1 ex

FIELD: medicine.

SUBSTANCE: disposable hygienic underpants with frontal part, back part and gusset part, with two holes for legs, longitudinal edge parts of frontal part being connected by means of longitudinal weld seams with longitudinal edge parts of back part in order to form opening for waist and two holes for legs in gusset part. Holes for legs are limited outside in transversal direction by internal end parts of weld seams. External elastic covering is made from elastic laminate containing elastic film, applied between two nonwoven layers. Each of weld seams is reinforced with at least one nonwoven strip, containing thermoplastic fibres, and has strength if stretched in direction transverse to weld seams, more than 5 N/25.4 mm at least on parts reinforced with said nonwoven strips.

EFFECT: invention allows to reduce risk of weld seam destruction.

9 cl, 2 tbl, 10 dwg

FIELD: medicine.

SUBSTANCE: according to the invention there is provided a two-layer structure containing the first layer, which is penetrable by fluid medium and connected with the second layer by means of fluid medium. The two layers contact with each other by means of microscopic elements being distant from each other and prominent from the first or from the second layer.

EFFECT: effective functioning of the structure and application as coating transport layer in absorbing material.

10 cl, 3 tbl, 32 dwg

Vaginal composition // 2369389

FIELD: medicine.

SUBSTANCE: vaginal composition comprises viable microorganisms of lactobacillus and/or bifid bacteria, preferentially Lactobacillus bifidus, devitalised saccharomyces, preferentially Saccharomyces cerevisiae, saccharide(s), vitamin A retinal and zinc with specified ratio of composition components.

EFFECT: vaginal protection without negative effect or infliction of harm.

14 cl, 2 ex, 1 tbl

FIELD: personal utensils.

SUBSTANCE: invention pertains to absorbing product, such as a diaper, diaper-panty, sanitary napkin or protective towel used in incontinence, etc, whereat set product contains components joined together by a special connecting element with a pattern. Connecting element with the pattern (11, 12, 16, 18, dwg. 1, 2, 3) is capable of colour changing, due to heating and/or pressing when joined, whereat the above set colour changing properties are either irreversible or reversible. Colour changing properties may be secured by means of thermochromic pigments, thermochromic fibers and/or pigments sensitive to pressure.

EFFECT: invention pertains to laminated material formed of two and more layers of roll materials joined together by means of connecting element with a pattern capable of colour changing.

14 cl, 3 dwg

FIELD: medicine.

SUBSTANCE: invention concerns medicine. Adsorbing panties having a crotch and front and back pieces containing an elastic rolled material, making an integral component of at least a part of front and/or back pieces. Further, the product has an elastic belt attached to the elastic rolled material. The belt contains the first and second layers of nonelastic rolled material in-between enclosing at least one extended elastic element wherein the first layer is attached to one side of the elastic rolled material, and the second layer is attached to the opposite side of the elastic rolled material directly opposite to the first layer. The first and second layers are attached to the elastic rolled material when it is stretched so that to fold the belt along seams when the elastic rolled material is in its primary position.

EFFECT: invention allows improving conformability and comfort of the products.

30 cl, 8 dwg

FIELD: medicine.

SUBSTANCE: invention concerns medicine. An adsorbing product comprises a coated adsorbing body that encloses at least one adsorbing part. The coating has a fluid-tight surface and a fluid-permeable surface. The adsorbing body accommodates the second adsorbing part which is separated and longitudinally displaced from the first adsorbing detail. The first adsorbing part contains an ear-shaped segment to mount the second adsorbing part in-between two legs and longitudinally extended so that in the adsorbing body between the ear-shaped segment of the first adsorbing part and at least each leg of the second adsorbing part, there are bend notches formed. Besides, the invention concerns method for making the adsorbing product described above.

EFFECT: invention allows improving conformability of the product without special anti-leaking elements.

30 cl, 4 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to water-absorbing materials and products from them. Claimed are versions of water-absorbing material in form of particles, including as main component water-absorbing polymer, which has net structure from links, obtained from unsaturated carboxylic acid and/or its salt, which is obtained by surface sewing processing. Water-absorbing material of claimed invention contains residual monomer in amount not higher than 500 p/mln, and residual monomer index value is not higher than 0.30. Claimed method of obtaining water-absorbing material includes obtaining of hydrogel polymer by means of polymerisation of water solution of monomer which includes unsaturated carboxyl acid and/or its salt in presence of sewing agent; obtaining water-absorbing polymer precursor which represents powder and includes particles which have size from 300 to 850 mcm and particles which have size less than 300 mcm as main components; drying of said hydrogel polymer with further crashing and classification for determining distribution by particle size; obtaining water-absorbing polymer by heating mixture of mentioned water-absorbing polymer precursor and surface sewing agent, which can form ester bond on water-absorbing polymer precursor surface; addition to water-absorbing polymer of water solution, which includes sulphur-containing reducing agent, by means of dispersion, and heat processing of mixture of water-absorbing polymer and water solution in air flow at temperature not lower than 40°C, but not higher than 120°C. Also claimed is absorbing product which includes claimed water-absorbing material.

EFFECT: elaboration of water-absorbing material which has inessential amount of residual monomer, inessential change of residual monomer amount in range of particle distribution by size and suitable absorptive properties, applicable for sanitary-hygienic material production; and method of obtaining it.

15 cl, 3 tbl, 8 ex

FIELD: medicine, hygiene.

SUBSTANCE: the suggested product contains the mixture out of thermoplastic hydrophobic and absorbing fibers. Absorbing fibers are present in the quantity being sufficient to efficiently absorb liquid from external surface of combined covering and transmitting layer at no competition with absorbing middle layer to provide quick penetration of liquid at minimal reverse wetting.

EFFECT: higher efficiency.

19 cl, 2 dwg, 1 tbl

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