Material with prongs for fastening element, the manufacturing method of absorbent material and product

 

(57) Abstract:

Use: manufacture of mechanical fastening systems. The essence of the invention: according to the method of manufacturing a material with prongs for fastening element is heated thermoplastic material at least to its melting temperature, put it causing means discretely on a moving substrate, pull discrete applied thermoplastic material in the direction parallel with the substrate vector component with the formation of the body of the teeth. Then separate the teeth from damaging means and formed at the free end of each prong of its means of engagement. Body teeth in the projection on the substrate have inclined to the direction of movement of the substrate at an angle constituting 20-160o. Obtained in this way the material with the teeth for a fastening element for use in an absorbent product. 3 S. and 7 C.p. f-crystals, 9 Il.

The invention relates to mechanical fastening systems and absorbent products such fastening systems for material with prongs for fastening element, method of manufacture and absorbent articles containing such material.

Known material with teeth for e body and the tool engagement, United with the body teeth and protruding sideways at the side surface of the body, having contiguous with the base and extending from the substrate near the end and located with an inclination to the plane of the substrate under the front angle, different from its rear corner.

A known method of manufacturing a material with prongs for fastening element by heating a thermoplastic material at least to its melting temperature, causing it deals by means of discretely on a moving substrate, pulling discretely deposited on a substrate of thermoplastic material in the direction parallel with the substrate vector component with the formation of a thermoplastic material on a substrate body teeth, Department of teeth from damaging tool and the formation at the free end of each prong of its means of engagement.

Known absorbent article containing a United one with the other of the upper and lower layers, placed between the absorbent layer and the means of fastening with the fastening element made of a material with teeth.

The objective of the invention is to provide a material with prongs for fastening element, method of manufacture and absorbent products, ensure the bag in the direction transverse to the direction of movement and processing of the substrate.

This technical result in material with prongs for fastening element containing substrate with prongs, each of which has United with the substrate at the base of the body, and means gearing, United with the body teeth and protruding sideways at the side surface of the body, having contiguous with the base and extending from the substrate near the end and located with an inclination to the plane of the substrate under the front angle, different from its rear angle, is achieved by the fact that the body of the tooth in the projection on the substrate is tilted to the direction of movement of the substrate during the formation of teeth at an angle, comprising 20o-160omainly 45o-135oand most predominantly 60o-120o.

This technical result in the method of manufacturing a material with prongs for fastening element by heating a thermoplastic material at least to its melting temperature, causing it deals by means of discretely on a moving substrate, pulling discretely deposited on a substrate of thermoplastic material in the direction parallel with the substrate vector component with the formation of Ter the one end of each prong of its means of engagement is achieved by what body of teeth in the projection on the substrate have inclined to the direction of movement of the substrate at an angle constituting 20o-160omainly 45o-135oand most predominantly 60o-120o.

Body teeth are placed at an angle to the direction of movement of the substrate by rejecting formed teeth until they are cured.

Deviation of teeth is carried out by exposure to a fluid medium, when the difference between its pressure in the direction perpendicular to the direction of movement of the substrate.

As the fluid is used mainly laminar gas flow across the substrate, and the pressure difference of the fluid is equal to 1-10 pounds per square inch and it is generated by the formation of the substrate areas of high and low pressures.

Laminar gas flow across the substrate create by holding gas at least one amplifier of the flow, mainly through the first and second amplifiers thread with providing suction opening of the first amplifier of the second gas flow amplifier.

Deviation of teeth is carried out by exposure to the teeth of gravitational forces.

The impact on the teeth of the gravitational forces from the spoon to the horizontal at an angle equal to at least the 15omainly 30o.

Deviation of teeth is carried out by exposure to gravitational forces and the fluid when the difference between its pressure.

This technical result in an absorbent article containing a United one with the other of the upper and lower layers, placed between the absorbent layer and the means of fastening with the fastening element made of a material with teeth, is achieved in that the material with teeth is a obtained by the method according to PP 1-8 material.

In Fig. 1 shows a material with prongs for fastening element in an isometric view, and Fig. 2 prong on the substrate of Fig. 3 embodiment of the prong on the substrate of Fig. 4 a device for implementing the method of manufacture of the material, Fig. 5 material with teeth oriented in arbitrary directions; Fig. 6 the garment with the absorbent article of Fig. 7 prong, top view; Fig. 8 element of the device for implementing the method of Fig. 9 embodiment of the device, top view.

Forming the fastening element material includes a substrate 1 with prongs 2, each of which has United at the base 3 of the body 4 and the tool zatepleni the mi gearing 5. Each tool engagement 5 stands sideways on the side surface of the body 4 in one or more directions and has a similar hook-shaped tooth form that allows the tool engagement coupled with the complementary receiving surface (Fig. not shown), which may be closely spaced holes defined by the strands or fibers or can be locally elastically deformable to capture funds gearing 5. Such surfaces can have a mesh foam, knitted fabric, non-woven materials, materials with loops of type "Velcro".

The substrate 1 has sufficient strength, wear resistance, resistance to exfoliation of teeth, the ability of a light clutch with teeth, flexibility and is a knitted fabric, woven or non-woven fabrics, rubber, vinyl material, films, in particular, polyolefin film, and mainly the Kraft paper with the original density equal to 0.08 kg/m2.

The base 3 of each prong is generally flat part of the tooth 2 in direct contact with the substrate 1. The base area should be sufficient to provide the required strength and the shear teeth. When the body length is 4 prong it based the design. The value of the ratio of the sides of the base should not be too large, otherwise the wave will be unstable. The optimum ratio of 1.5:1.

The base 3 of the tooth, usually has a round shape and a diameter of 1.27 mm To increase the strength of teeth, peel and slice in a particular direction may increase the Foundation in this direction.

The body 4 prong is its intermediate part between the base and the tool engagement and ensures the availability of distance perpendicular to the substrate direction between the tool engagement 5 and substrate 1.

The starting point 6 of the body 4 prong has a point, which can be considered the centre of the base and which is usually located within the base 3. The horizontal distance between the far edges of the base in the direction of the shear wave is divided in half and determine the midpoint of the base. It does not take into account rounding and irregularities that occur when attaching to the substrate.

The body 4 is inclined to the plane of the substrate 1 at the base 3 of the tooth 2 at an angle which is determined in the plane passing through the maximum horizontal projection 7, characterizing a distance between the source tocchet maximum value, is the core of the tooth. This profile view, generally oriented in the direction of treatment of a teeth.

Imaginary secant plane 8, generally parallel to the plane of the substrate 1 is carried out through the most remote from the substrate to the point of the tooth, determining its greatest height. Then put the plane on 8 one-fourth of the height along the perpendicular down to the substrate 1 to the intersection with the plane 8 of the tooth with getting the three points. The first point 9 is called the front 75% of the point at which the plane 8 crosses the lateral surface of the tooth from the front edge 10. The second point 11 is formed at the intersection of the plane 8 of the rear edge 12 of the tooth is called the rear of the 75% point. The midpoint of the line 13 between the points 9 and 11 is combined with the original point 6 of the body 4 on the base and the angle of these lines to the substrate plane is the angle a which is called the angle a of the body 4.

The angle a generally 90owith the plane of the substrate or is mostly acute to provide increased resistance to separation of the tooth in a direction generally parallel to the maximum projection 7. However, the angle a should not deviate from the 90 is a equal 45-80omainly about 65othe teeth have sufficient shear strength. If the angle a is less than 80othe body 4 is oriented to the substrate plane, not perpendicular.

To determine the angle b1the front edge 10 and angle2the rear edge 12 are front 14 and rear 15 point base 3 and with them connecting points 9 and 11. Direct form with the plane of the substrate input angles: angle1the front edge and the angle2the rear edge. These angles determine the parallelism of the sides of the body 4. If the sum of angles1and2not equal 180othen the sides of the body 4 non-parallel to one another and bounding these angles lines cross above or below the plane of the substrate 1. At the intersection of these straight above the plane of the substrate 2 prong tapers from the base 3 in the direction of the far end and means of engagement. The sides of the body 4 are parallel to each other only if the angles1and2oriented in the same direction and supplementing their values are equal.

The optimum angle1equal 4530oand angle2- 6530o.

The body 4 prong should be above the substrate at a distance, provided the step or hook locks on the receiving surface. Long body allows the prong to penetrate deeper into the receiving surface, and short body contributes to a more stable teeth, but causes less deep penetration into the receiving surface.

For the receiving surface on a knitted or woven material, it is advisable to use a relatively short body 4 longitudinal length between the substrate and the most remote from her point of approximately 0.5 mm, mostly about 0.7 mm

For the receiving surface on the material thickness of more than 0.9 mm longitudinal length of the body should be approximately 1.2 mm mainly of at least a 2.0 mm

The longitudinal length of the body 4 is defined as the shortest distance between the plane of the substrate and the most remote from her side surface means of the gear 5, which is at least twice the diameter of the strands or fibers on the receiving surface, preferably 10 times the diameter of the strands or fibers to ensure a good grip or engagement means to engage the teeth and hold them strands or fibers. This longitudinal distance is approximately 0.2 to 0.8 mm

The body 4 prong can have any cross-sectional shape of DSTV gearing, the creation of the prong DC voltage when exposed to the teeth of the forces of separation and the reduction of the number of their material.

Good working conditions have teeth when the ratio of the area of their base to the cross-sectional area at the highest point, which varies from 4:1 to 9:1. When a round body shape, the diameter of its base is equal to 0.76 to 1.27 mm, and the diameter at the top is 0,41-0,51 mm

Tool gear 5 may be any protrusion in the lateral direction relative to the outer surface of the body 4, which resists separation or removal from the receiving surface.

A lateral protrusion has a vector component parallel to the plane of the substrate 1 and addressed to her. Tool gear 5 and the body 4 prong can have transverse and longitudinal vector components. You want the tool engagement 5 had the front part with a vector component parallel to the substrate plane and turned to her.

Tool gear 5 can have a greater horizontal projection 7 than the body 4, or Vice versa. The tool engagement 5 generally arcuate and may have a curvature with an incoming angle, it has a plot, priblijalsya. This plot is located in the lateral direction of the body 4, though not necessarily directed to the starting point 6.

The tool engagement 5 each prong can be located essentially in one lateral direction to create oriented in one direction the resistance to separation or may have any orientation to provide isotropic resistance to tearing in any lateral direction.

Tool gear 5 may be in the form of hook-shaped teeth, which are essentially on one side of the body 4, defining a generally convex contour, and penetrate into the holes of the receiving surface for engagement of the strands or fibers of the receiving surface at the inner radius of curvature of the 16 funds gearing 5. The interaction between the tool engagement 5 and the strands or fibers of the receiving surface prevents release of the fastening element with the teeth of the receiving surface to until will not be exceeded resistance to tear or shear the attachment system. The tool engagement 5 should not be too far away to act along the radius in the lateral direction, otherwise it will not be able to penetrate into the hole of the receiving surface. The cross-section means of the gearing 5 due knogo section and geometry tools gear 5 is not critical, while the tool engagement 5 retains integrity of design, which provides sufficient resistance to shear and bending to provide the desired resistance to the detachment and displacement of the mounting system having a matrix of teeth 2 of this density. For the described variant acceptable means of gearing in the form of a hook prong having a maximum horizontal projection 7 from the center of the base 3 to the remote side of the periphery of approximately from 0.79 mm to about 0.9 mm

Matrix of teeth 2 may be of any desired shape and density to provide the desired resistance to the detachment and displacement in the specific fastening system. Typically, when the density of the matrix increases, the proportion increases linearly and resistance to tear and shear. Individual teeth 2 should not be located too close to one another, so as not to interfere with each other and not to interfere with the tool engagement 5 adjacent teeth 2 coupled with the strands or fibers of the receiving surface. If the prongs 2 are too close, it can happen seal or melirovanie strands or fibers of the receiving surface, preventing the formation of holes between the strands or fiber is entom securing the necessary resistance to the detachment and the shift did not require too much area of the substrate 1.

The teeth 2 is advantageous to place the rows so that each prong 2 were generally equally spaced from adjacent teeth. The series generally oriented in the process direction and in the direction transverse to the direction of processing, in accordance with the stated method of manufacturing material. As a rule, each row of teeth 2, oriented along and across the direction of processing, should be at equal distances from the adjacent rows of teeth 2, which are oriented along and across the direction of processing, to ensure generally uniform stress field around the fastening element and the entire receiving surface, when they put the power Department.

Step characterizes the distance, measured in the process direction or in the direction transverse to the process direction between the centers of the bases 3 teeth 2 in the adjacent rows. Usually is acceptable fastening element having a matrix of teeth 2 increments in the range of from about 1,02 mm to about 5,08 mm in both directions, and it is preferable that the step was equal to about 2,03 mm, Preferably adjacent rows, oriented transversely to the direction of processing, were offset by approximately half step napredne, oriented transversely to the direction of processing.

Teeth 2 can be placed in the form of a grid with a cell size of 1 cm2containing a matrix of teeth 2 from 2 to 20 rows of teeth on one centimeter, as in the process direction and in the direction transverse to the process direction, preferably 9 rows of teeth on one centimetre in each direction. This grid allows you to receive a fastening element, having about 4-400 teeth/cm2on the substrate 1.

The teeth 2 may be made of any heat-sensitive material, resistant and keeping the form in the solid state, but not so fragile that could fail when the fastening system is exposed to the efforts of the Department. Under heat-sensitive material means a material which when heated gradually changes from solid to liquid. It is believed that the failure occurred when the prong 2 is destroyed or when he cannot oppose efforts, or when it is subjected to forces branch. Preferably, the material had a modulus of rupture equal to 24600000-31600000 kg/m2.

Furthermore, the material of the prong 2 should have a relatively low subject and hard consistency at temperatures close to the melting temperature of the material to the body 4 of each prong can extend, and means gearing 5 just to be formed.

It is important that the teeth 2 were visco elastic, allowing you to change in a wider range of parameters that affect the design of the tooth 2, and especially on the geometry of the tool engagement. Acceptable material having a viscosity in the range from 20 to 100 Pas at the temperature of use of the substrate 1.

Viscosity can be measured using rheometrical mechanical spectrometer in dynamic mode at a sampling rate of 10 Hz, and the deformation of the material constituting 10% is Preferred geometry of the disc and plate, in particular a disk with a radius of about 12.5 mm when the gap between the disc and plate about 1 mm

It is preferable to make the teeth 2 of a thermoplastic material. The term "thermoplastic" refers to unstructured polymers heat-sensitive material which flows under heat and pressure. For the manufacture of the fastening element according to the invention are suitable, in particular, hot melt thermoplastic adhesives.

Hot melt adhesives term refers to the high temperatures and which is applied in the molten state.

Particularly suitable and preferred polyester and polyamide hot melt adhesives. Used herein, the term "polyester" and "polyamide" means a chain having repeating units of the ester and amide, respectively.

When choosing a polyester hot-melt glue set that works well adhesive having a complex viscosity of about 232 Pas at a temperature of approximately 194oC. When choosing a polyamide hot-melt adhesive, it was found that glue works well, has a complex viscosity of about 9010 Pas at a temperature of about 204oC.

In Fig. 3 shows a second embodiment of the fastening element, in which the tool engagement 5 may have a generally hemispherical /mushroom/ form. The term "hemispherical" means, generally circular in shape, protruding in many directions and comprising hemispheres and spheres, but not limited to, the right forms. This geometry, in particular, design tools, gearing, generally spherical shape, has the advantage of causing less damage to the strands of the receiving surface, usually occurring when the tool engagement is extracted from the receiving surface is more setting different number of times. If you choose the tool engagement hemispherical shape, it is preferable that the body 4 was almost orthogonal to the plane of the substrate 1 to provide more light penetration in the holes of the receiving surface and reduce the damage of the receiving surface when the tool is released from engagement receiving surface. Acceptable is a body 4 having an angle of approximately 70-90o.

To obtain wave 2 the corresponding proportions and hemispheric means of gearing 5 of the latter should act in the radial direction from the side surface of the body 4 at a sufficient distance to the side to grasp the strands of the receiving surface, but not to be so far to the mass of the means of gearing 5 could not strictly be based on the body 4, or otherwise to the body 4 was unstable. When the angle a of the body 4 is reduced, i.e., there is a further deviation from the vertical position, the structural integrity of the means of gearing 5 is dependent on the cross-section.

Works well tapering body 4 having described the relationship of the cross-sectional area and diameter of the base 3 and the high places, and the angle a of approximately 80o. You must tapline 5.

For the variant of implementation shown in Fig. 3, does not have a smooth transition from the body 4 by means of gearing 5 and for which it is easy to define the boundary between the body and the tool engagement, imaginary clipping plane 8 is held at a distance of three quarters of the length of the perpendicular from the plane of the substrate 1 to a plane tangent to the tool engagement 5, at the point nearest in the longitudinal direction to the plane of the substrate 1. Then a secant plane 8 is used, as described above, to determine the angle a of the body 4, the angle b1the front edge and angle2the rear edge.

Tool gear 5 has radially to act in each lateral direction from the side surface of the far end 17 of the body 4 by at least 25% of the diameter of the far end 17 of the body 4, preferably about 38% of this diameter. On the other hand, if the diameter of the far end 17 of the body 4 is equal to 1.0, then the diameter of the tool engagement 5 should be at least 1.5 times, preferably at least 1.75 diameter of the far end 17 of the body 4. In addition, base diameter 3 should be twice the diameter of the far end 17 of the body 4. To ensure appropriate longitudinal distance means gearing 5 from the substrate 1, the height of the body 4 is zobrazenie in Fig. 3, obtained by heating means gearing 5 and the far end of the body 4, is shown in Fig. 2 at least to the melting temperature. This is achieved by holding the funds of the gear 5 and the far ends of the prongs 2 to the heat source located in the longitudinal direction relative to the substrate 1 so that the base 3 and the middle end of the body 4 is not heated at least to the melting temperature. Acceptable is a gift of the highest part of the wave at a distance in the range of approximately 3.3 to 10.1 mm to the heat source, for example a hot wire is heated to a temperature of approximately 440oC.

Angle 1the front edge and the angle2the rear edge of the prong 2 is similar to the angles of the respective hook SitePlayer wave 2, which is formed preferisci siteplease prong 2. This is due to the fact that the angle of the body 4 and the angles b1and2the front edge and the rear edge is essentially unchanged when the tool gear 5 shown in Fig. 2, is heated and melted prior to joining tool gear 5 shown in Fig. 3.

For the above-mentioned receiving surface preferably, the tool engagement 5 shown in Fig. 3, had a lateral is approximately between 0.30 0,054 mm, and the diameter at the far end 17, is approximately equal to 0.016-0,020 mm far end 17 of the body 4 must be located above the plane of the substrate 1 at a distance approximately equal to 0.44-0.5 mm, and the tool engagement 5 should have a horizontal projection 7 of approximately 0.56 to 0.7 mm, preferably of 0.64 mm

A method of manufacturing a material with teeth is as follows.

Material in accordance with the present invention can be obtained by using the modified method of gravure printing. It is evident from Fig. 4 shows that the substrate 1 passes through the grip 18 formed between the two rollers, printing roller 19 and the supporting roller 20. The axis of the rollers 19 and 20 are parallel to each other and are generally parallel to the plane of the substrate 1. The rollers 19 and 20 rotate around their axes and are in the capture zone 18, as a rule, are of equal magnitude and direction of linear velocity. If necessary, both the platen, the printing roller 19 and the abutment roller 20 may be powered by an external driving force (not shown) or one roller is an external driving force, and the second is driven by frictional engagement with the first roller. The required driving force provide by using alexenia rollers 19 and 20 actuate the means for applying the teeth 2 on the substrate 1.

Means for applying shall be capable of withstanding the temperature of the material of the teeth 2, when he is in a liquid state, to provide essentially uniform pitch between the teeth 2 and in the process direction and crosswise to the direction of processing and to create the desired density of teeth in the matrix. In addition, the tool application should facilitate the fabrication of teeth having different diameters of the base 3 and height of the body 4. Printing roller 19 provides, in particular, the means for applying the teeth 2 on the substrate 1 as described desired matrix (or other pattern) in accordance with the present method of manufacture. The expression "means for drawing" refers to any means which transfers the liquid material of the teeth of the feeder on a substrate 1 in doses appropriate to the individual teeth 2. The term "application" means the transfer of the material of the teeth of the feeder and the dispensing of the material to the substrate in amounts corresponding to individual teeth.

One acceptable means for applying the material of the teeth 2 on the substrate 1 in a matrix of one or more cells 21 in the printing platen 19. Used herein, the term "cell" refers to any oral or other element of the printing roller 19, to the CLASS="ptx2">

The cross-sectional area of the cell 21 on the surface of the printing roller 19, as a rule, corresponds to the shape of the base 3 prong 2. The cross-section of the cell 21 should be approximately equal to the desired cross section of the base 3. The depth of the cell 21 is partially defines a longitudinal length of the tooth 2, and specifically the length of the perpendicular from the base 3 to the point or area of maximum height. However, when the depth of the cell 21 is increased to more than approximately 70% of the diameter of the cell 21, the longitudinal size of the teeth 2, as a rule, remains constant. This is because not all of the liquid material of the tooth is extruded from the cell 21 and is applied to the substrate 1. A certain amount will remain in the cell 21 due to surface tension and viscosity of the liquid material of the tooth and will not be submitted to the substrate 1.

For the variant described here implement appropriate is deaf, generally cylindrical cell 21 having a depth, which is approximately 50-70% of the diameter. If necessary, meet the requirements of the conventional production method, such as chemical etching, cell 21 may have a tapering shape of a truncated cone.

If the cell is s to obtain a preferably conical shape of the body 4 and the above relations sections of the base and top height. If the conical shape of the cell 21 has a larger input angle, it can lead to the creation of the prong 2, having too much constriction. If this input angle is too small or the cell 21 is cylindrical, it leads to the formation of the body 4 generally constant cross-section and as a result, areas of high stress. In the described embodiment, method acceptable prong 2 creates the cell 21 having an input angle of approximately 45othe diameter of the side surface of the roller approximately 0,89-1,22 mm, and a depth in the range from about 0.25 mm to about 0,51 mm

Printing roller 19 and the abutment roller 20 must be compressed along the line connecting the axial line of the roller to squeeze the glue out of the cells 21 in the printing platen 19 to the substrate 1 and to provide sufficient friction clutch for driving the opposite roller, if he does not have an external drive. The supporting roller 20 should be slightly softer and more pliable than the printing roller 19, to provide a cushion material of the tooth, when it is applied onto the substrate 1 from the printing roller 19. Acceptable is the supporting roller 20 having a rubber coating with a hardness on the shore a scale And change them by force, what is the imprint in the process direction approximately 6,4-12,7 mm Used herein, the term "footprint" refers to the contact area over a soft cushion on the substrate 1 as it passes through the grip 18.

To prevent hardening of teeth 2 during the transfer from the feeder to the substrate 1 is preferable to heat the printing roller 19. Typically, you want to ensure that the temperature of the printing roller 19 was close to the temperature of the material feeder. It was established that in the case of the use of polyester thermoplane glue N 7199 good results the temperature of the printing roller 19, is equal to approximately 197oC.

It should be noted that you may need a cooling roller, if the substrate 1 is exposed to the harmful effects of heat transferred from the material of the tooth. If you want a cooling roller, it can be included in a bearing roller 20 as is well known in the art devices. Such a device is often necessary when using a substrate 1 made of polypropylene, polyethylene or another polyolefin.

The material used for the formation of individual teeth 2, should be stored in the feeder, which provides appropriate the URS melting of the material. Consider that the temperature of the material is equal to or above the melting temperature if the material is partially or completely in the liquid state. If the feeder material of the tooth is supported too high temperature, the material of the tooth will not be quite viscous and can create tools gear 5, which in the lateral direction are connected with prongs 2 are adjacent in the direction of processing. If the material temperature is too high, the wave 2 will be spread in the spot hemispherical shape and the tool engagement 5 will not be formed. Conversely, if the temperature of the feeder is too low, the material of the tooth will not be transferred from the feeder to the means for applying the material or, respectively, cannot properly be transmitted from the means for applying 21 material on a substrate 1 in the form of the desired matrix or pattern. Feeder material should also provide a generally uniform temperature profile in the direction transverse to the direction of processing, the material is transferred from the means for applying on a substrate 1, and easily re-filled or replenished after spending the material of the tooth.

Acceptable feeder is adjacent to the roller 19 of the chute 22 is om the direction of processing. The groove 22 has a closed bottom, the outer sides and ends. The top can be open or closed. The inner side of the gutter 22 is open, allowing the inflow of liquid material for free contact and interaction with the periphery of the printing roller 19.

To maintain the material of the teeth in the liquid state and at a corresponding temperature of the feeder is subjected to external heating by means of a known device (not shown). Preferred is a temperature above the melting temperature but below the temperature at which there is a significant loss of viscoelasticity. If necessary, the liquid material inside the trench 22 can be mixed or recycling to ensure the homogeneity and uniformity of temperature distribution.

Near the bottom of the trench 22 is placed a rod 23, which regulates the amount of material wave applied to the printing roller 19. When the printing roller 19 rotates, the rod 23 and the groove 22 is supported in a fixed position, allowing the squeegee 23 to wipe the periphery of the printing roller 19 and remove any number of the material of the tooth, which is not housed in separate cells 21 of the platen 19, allowing the desired matrix in accordance with the geometry of the cells 21 on the periphery of the printing roller 19. As can be seen from Fig. 4, preferably, the doctor blade 23 in a horizontal plane, in particular, the horizontal end of the printing roller 19, which is in front of the capture zone 18.

After application to the substrate 1, the teeth 2 are separated from the printing roller 19 and means for applying 21 with the cutting means 24 for the Department of teeth 2 education funds gearing 5 of the fastening element and stains. Used herein, the term "spot" refers to any material separate from wave 2 and not forming part of the fastening element.

The cutting tool 24 should be adjustable to provide different sizes of teeth 2 and the horizontal projections 7 means of gearing 5, as well as ensure uniformity in the direction transverse to the processing matrix. The term "cutting tool" refers to any device in the longitudinal direction separates the stain from the fastening element, as described above, the term "separating" refers to the action of the Department of stains from material with teeth.

The cutting tool 24 should also be clean and should not rust, oxidize or to bring substances causing corrosion and contaminants (for example, the material stains in the teeth 2. Primadonna from the substrate 1 at a distance, that is a little bit more of the length of the perpendicular from the highest point hardened teeth 2 to the substrate 1.

The preferred electrical heating wire 24 to prevent stratification of molten material of the teeth on the cutting tool, to compensate for any cooling of teeth 2, which occurs when the material of the tooth emerges from the heated feeder, up to the moment when there is a separation, and in order to facilitate the stretching in the horizontal direction means gearing 5. Heating of the cutting tool 24 should also ensure a uniform temperature distribution in the direction transverse to the process direction, to obtain a matrix of teeth 2, which has essentially the same geometrical parameters.

Generally, when the temperature of the material of the tooth is increased, it is possible relatively lower temperature of the hot wire 24 of the cutting tool. Also when the speed is reduced, the substrate 1 is less frequent cooling of the hot wire 24, when separated, each tooth 2 and the stain, making it more acceptable the use of relatively less powerful hot wire 24 at the same temperature. It should be noted that, when temperae body 4. Conversely, the length of the body 4 and the horizontal length of the tool engagement 5 will increase inversely proportional, when the temperature of the hot wire 24 is reduced. It is not necessary that the cutting tool 24 is actually in contact with the tooth 2 to effect the separation. Prong 2 can be separated by using the heat radiated from the cutting tool 24.

For the described variant implementation is established that is acceptable nichrome wire 24 a round cross-section, having a diameter of approximately 0.51 mm, heated to a temperature of approximately 343o-416oC. it is Obvious that the replacement of the above-described hot wire 24 can serve as a knife, laser, or other cutting tool.

It is important that the cutting tool 24 is located in a position that allows you to stretch the material of the tooth before the separation of the tooth from 2 spots. If the cutting tool 24 is placed too far from the plane of the substrate 1, the material of the wave will pass under the cutting tool 24 and not be captured them, forming a very long tool gear 5, which will not be removed from the substrate 1 or from adjacent teeth 2 at a sufficient distance. And naoborot the top of the body 4 and the tool engagement will not be able to be formed.

For the described method of manufacturing found that with proper placement of the hot-wire cutting tool 24 is approximately 14-22 mm, preferably about 18 mm, in the process direction from the nip, at a distance of approximately 4.8-7.9 mm, preferably about 6.4 mm in the radial direction outward from the supporting roller 20 and at a distance of approximately 1.5-4.8 mm, preferably about 3.3 mm in the radial direction outward from the printing roller 19.

When using the substrate 1 is moved in the first direction relative to the means for drawing 21. In particular, the substrate 1 is moved through the grip 18, preferably stretch dilatory roller (Fig. not shown). This provides a clear area of the substrate 1 under continuous application of teeth 2 and remove part of the substrate 1 having teeth 2 drawn on it. Direction generally parallel to the main direction of movement of the substrate 1 when it passes through the grip 18, referred to as "process direction". The direction of processing, as indicated by the arrow 25 in Fig. 4, is generally orthogonal to the axial line of the printing roller 19 and the supporting roller 20. The direction'or the rule processing".

The substrate 1 may be extended through the grip 18 at a speed which is approximately 2-10% more than the linear speed of the rollers 19 and 20. This is done in order to minimize the formation of means for applying the material of the teeth on the substrate 1 assemblies or folds on it near funds of the section 24 teeth. The substrate 1 is moved through the grip 18 in the first direction with a speed of approximately 3-31 m/min.

The moving speed of the substrate 1 after the capture of 18 can affect the angle of the body 4. If you want the teeth 2 had the inclination angle of the body 4 to the substrate that is closer to direct, choose a slower speed of movement of the substrate 1 in the first direction. Conversely, if the moving speed increases, the angle a of the body 4 is reduced and the tool engagement 5 will have the greater value of the horizontal projection 7.

If necessary, the substrate 1 can be rejected at the angle g, equal to approximately 35o-55opreferably approximately 45ofrom the plane of the grip 18 to the supporting roller 20 to use the viscoelastic nature of the material of the tooth and, respectively, to Orient the tool engagement 5 in the transverse direction as the teeth 2 of the printing roller 19. The angle g from the plane of the grip 18 has a weak, but positive, impact on the receiving means of the gearing 5, having a greater horizontal projection 7.

After application of the material of the prong from the cell 21 on the substrate 1, the rollers 19 and 20 continue to rotate in the direction of the arrow 25 (Fig. 4). This leads to a period of relative displacement between the movable substrate 1 and the cell 21 within which to cut) material wave forms bridges between the printing roller 19 and the substrate 1. When the relative displacement of the material of the tooth is extended until until it is cut and prong 2 is separated from the cell 21 of the printing roller 19. Used herein, the term "extended" refers to the increase in linear dimension, the continuing long-term during the lifetime of the fastening element.

As stated above, there is also the need to separate individual teeth 2 from the printing roller 19, as part of a method of forming a means of gearing 5. After cutting tooth 2 is divided longitudinally into two parts: the far end and the means of gearing 5, which remain in the fastening element, and spot (not shown), which remains on the printing platen 19 and can be optionally re is ntact with other objects. After curing of teeth, if necessary, to minimize the substrate 1 in a roll for storage.

It is established that, if selected as thermoplane adhesive material is a polyester resin, it is acceptable temperature of approximately 177o-193oC, preferably about 186oC. If you choose a polyamide resin, then set the temperature of the material is approximately equal to 193o-213oC, preferably about 200oC. the Substrate 1 from bleached on one side of the Kraft paper with the thickness of about 0,008-0.15 mm works well with the teeth 2 on the basis of hot-melt glue. The teeth are connected with bleached side of the Kraft paper.

For the described operation is acceptable platen 19 having a matrix of approximately 5 cells 21 per centimeter in the process direction and in the direction transverse to the process direction, to form a grid approximately 26 cells on one cm2. This grid density can be used mainly with a printing roller having a diameter of approximately 16 cm in diameter cell 21 is about 1 mm and the depth of the cells is approximately 0.8 mm is Established that the above printing is Oki 1 is approximately 3 m/min

Nichrome hot wire 24 having a diameter of approximately 0.5 mm and located at a distance of approximately 18 mm from the nip 18 in the direction of processing of approximately 0.3 mm in a radial direction outward from the printing roller 19 and approximately 6.4 mm in the radial direction outward from the supporting roller 20 is heated to a temperature of approximately 382oC. fastening Element obtained by this method is essentially similar to the element shown in Fig. 1, can be successfully used in a product, an illustrative example of which is described below.

It is obvious that the geometry means of gearing 5 is determined by the elasticity of the hot melt adhesive used for the manufacture of tooth 2, and the difference in temperature between the rear edge 12 and the front edge 10 of the tooth 2. The rear edge 12 of the tooth 2 shielded and isolated from the heat coming from the cutting tool 24. Conversely, the front edge 10 directly open to heat the cutting tool 24, which leads to the hardening or solidification front edge 10 after the rear edge 12. This leads to the lengthening of the front edge 10 and to reduce the rear edge 12 relative to each other. When increasing this difference in temperature fo the fastening element, with a relatively very small teeth 2 (not shown) by forming the natural pattern of the printing roller 19. Used herein, the term "natural pattern" refers to a matrix of teeth 2, obtained from the printing roller 19, which is not located in it cells 21, and instead used the surface of the roller 19 as a means for drawing 21. Thus, the figure of teeth 2 is formed by a gap between the rod 23 and the printing roller 19 and to a lesser extent surface finish of the printing roller 19.

Raquel 23 should be adjusted to provide radial clearance with the printing roller 19 which is approximately equal to 0,03-0,08 mm Teeth 2 small natural pattern obtained by using such a printing roller 19, successfully used with the receiving surface of the reticulated foam, which has no locks and holes, but rather undergoes localized elastic deformation, which resist separation of the mounting system.

It is evident from Fig. 5 shows that if you want the fastening element with more close to the isotropic resistance to separation, this can be obtained by modification of the fastening element shown in, is depicted in Fig. 1, further treated to obtain a pH of 4 with the tool gear 5, which extend radially from the body 4 in different lateral directions, as a rule, arbitrary orientation. The expression "arbitrary orientation" means the presence of significant deviations of the directions of the horizontal projections 7 and profile images of the neighboring teeth 2.

It is obvious that such a construction is formed by setting the temperature difference between the core surface and the front surface 10 and the rear surface 12 of the teeth 2 of the fastening element and that this temperature difference can be increased by using radiation or preferably convection.

It also seems that as a result of achievement of the temperature difference between the front surface 10 or profiled surfaces relative to the rear surface 12 of the tool engagement 5 significantly alter the orientation or even get back the orientation of the horizontal projection 7, creating a wave 2, which is oriented in a different direction than that which he had immediately after cooling or solidification. The temperature difference can be set using any device 26, investoritele the blower placed over the teeth 2 and capable of focusing the temperature difference in the fastening element.

If necessary, this source 26 directs the air flow to the fastening system within approximately 90ofrom the first movement direction of the substrate 1, which is the direction of processing. Used herein, the expression "90ofrom the first direction" means a direction having a vector component generally perpendicular to the first direction of movement of the substrate 1 or the reverse, including a direction generally opposite to the first direction of movement.

If the source 26 is located at an angle of approximately 180orelative to the first movement direction of the substrate 1, it is directed to the front surface 10 of the teeth 2 of the fastening element, generally opposite to the direction of processing is described and claimed here. The direction of the source 26 directly on the front surface 10 of the teeth 2 will cause rotation of the horizontal projection 7 means of gearing 5, changing the orientation of the horizontal projection of approximately 180o. Teeth 2 shifted slightly sideways, i.e. in the direction transverse to the th funds gearing 5 of these teeth 2 are rotated approximately 90o. Thus, it is obvious that the source 26 that is oriented in a direction transverse to the direction of processing, will provide a fastening element having teeth 2 with different horizontal orientations in the direction transverse to the direction of processing in accordance with the position of the wave 2 relative to the source 26 of a temperature difference.

The blower 26, the feed air at a temperature of approximately 88oWith a distance of approximately 46 cm from the substrate 1, is an acceptable source of a temperature difference. Heat blower, oriented at an angle of approximately 45oto the plane of the substrate 1 and located at a distance of approximately 46 cm from the teeth, giving a picture of the fastening element, is essentially similar to that shown in Fig. 5. It is obvious that one or more hot wires located above the teeth 2 and oriented in the process direction, will give the fastening element, with means of gearing 5, oriented in the direction transverse to the process direction, and creating a regular little striped pattern.

Obviously, changing the orientation means of the gearing 5 is due to the cooling profile of the surface or the front surface is about source 26, less than the temperature of the periphery of such profile surfaces or the front surface 10. The temperature difference due to cooling leads to a reduction of the wave 2, which is sent to the source 26 of the temperature difference. This reduction may lead to a change in the means of gearing 5 and the horizontal projection 7 due to the temperature difference between the front surface 10 relative to the rear surface 46. Obviously, the reduction of residual stresses, which occur during the cooling process, can change the orientation of the horizontal projection 7.

In addition, it is obvious that any other changes. For example, the wave 2 having means gearing 5, acting in more than one direction can be formed or free formed prongs 2 can be obtained by other well-known ways, not only by way of gravure printing. If necessary in the production process can be used only one roller, enabling the contacting of the substrate 1 at least approximately 180othe lateral surface of this roller.

It is often desirable to have a fastening element according to the invention with a maximum horizontal projection 7 is the total of the invention for the manufacture of the fastening element disposable wipes preferably, to the maximum horizontal projection 7 of teeth 2 was oriented in a direction essentially perpendicular to the direction of movement of the disposable wipes on the production line. Production line of napkins requires complex and expensive equipment to cut, change the orientation and application of the fastening element, if the maximum horizontal projection 7 of teeth 2 are oriented in the process direction. However, the fastening system according to the present invention, obtained with the maximum horizontal projection 7 of teeth 2, which are oriented in a direction transverse to the direction of processing, does not require reorientation before applying for a disposable napkin. Therefore, in the manufacture of the fastening element of the present invention is very advantageous to use the ability to get the maximum horizontal projections 7 of teeth 2, which are oriented in directions other than the direction of processing.

There are two angles that are formed by the bodies of 4 teeth, 2, is obtained in this way. As mentioned above, the body 4 is the polar angle A (Fig. 7) relative to the direction of processing of the substrate 1. Used herein, the term "polar angle" refers to the angle of maximum Horite "top view" refers to the image of the teeth 2 in the direction perpendicular to the plane of the substrate 1. The term "process direction" refers to the direction generally parallel to the main direction of movement of the substrate 1 when it passes through the grip 18, and this direction is shown by an arrow 25 in Fig. 7. As indicated previously, to measure the polar angle, first determine the maximum horizontal projection 7 prong 2. As shown in Fig. 7, the polar angle And is the angle relative to the direction of the processing indicated by line 27 parallel to the maximum horizontal projection 7 in the top view. The polar angle A can be measured relative to the direction of processing or software, or counterclockwise, but it will not be more than 180o. The fastening element suitable for use on a napkin disposable, it would be preferable to have the teeth 2 with polar angle, so that the maximum horizontal projection 7 will have orientation in a direction having a vector component perpendicular to the direction of processing of the substrate 1. Thus, the teeth 2 may have a polar angle of more than 0obetween approximately 1oand approximately 180otypically, the polar angle is more than about 20o(20o-180o), more 4 the procedure of preferred polar angle A of the teeth from 2 to about 20oto about 160opreferred polar angle of between approximately 45oto about 135oand the most preferred polar angle of between approximately 60oup to approximately 120o. In the preferred embodiment shown in Fig. 7, the polar angle of the teeth 2 will be equal to approximately 90o.

The method of making the fastening element polar angle is the deviation of teeth 2, when they are partially or completely in the liquid state. Used herein, the term "deviation" refers to the provision of effort or influence in the direction having a vector component perpendicular to the direction of processing of the substrate 1. The teeth 2 may be rejected when they are newly formed, yet chilled and not solidified, and is still able to be deformed, or the teeth 2 may be rejected after they were cooled and solidified by reheating teeth 2 so that they are able to deform and to rotate with the deviation. There are a number of ways that are acceptable to the deviation of the tooth 2 in order to give the polar angle.

An acceptable way to make the polar angle is the deviation of teeth 2 by means of gravitational forces, who forces will rotate the teeth to the desired polar angle. This can be done by tilting the substrate 1 so that the plane of the substrate 1 when viewed in the direction of treatment will not constitute 90owith a steep line, but rather will form with it a different angle. When printing and the Department of teeth 2 angle H (Fig. 8) of the substrate 1 relative to the horizontal allows gravitational forces to act on the far ends of the bodies 4 and means gearing 5 and withdraw the teeth 2 to the longitudinal side of the substrate 1 having a smaller height. Preferably, the printing roller 19 and the abutment roller 20 together were tilted or raised at one end from the horizontal, as shown in Fig. 8, so that when the substrate 1 passes through the gripping rollers 18, the longitudinal edges of the substrate 1 were unequal height and gravitational forces, indicated in Fig. 8 letter G, acting on the teeth 2, giving the body 4, the angle a to the substrate 1 and the polar angle (any angle a, neither the angle a in Fig. 8 not shown). The substrate 1 should be tilted so that its plane formed an angle of at least approximately 15o. Preferably, the plane of the substrate 1 was at an angle equal to at least 30o.

In a non-limiting example, the method can be used n the cell 21 diameter is 0.102 cm and depth 0,046 cm, heated to a temperature of approximately 177oC, a substrate in the form of a white Kraft paper having a weight of 0.08 mg/m2moving at a speed of 4,266 photo m/min; printing roller 19 and the abutment roller 20 will be inclined to the horizontal at an angle of 30o.

Another reasonable way to make the polar angle is the deviation of teeth 2 by the application of differential pressure across the plane of the substrate 1, when the teeth 2 are partly or fully in the liquid state, so that the teeth 2 have been forced to turn to the desired polar angle. This can be done by using a fluid or gas flow through a plane of the substrate 1 in a direction having a vector component perpendicular to the direction of processing. The pressure difference will cause the teeth 2 to rotate or reorient themselves in the direction of the substrate, to which is attached a lower pressure. Preferably, the differential pressure across the substrate 1 was achieved by creating a high pressure on one side of the substrate 1 by means of the air nozzles, air needle or other well known in the art means. However, the pressure difference on the substrate 1 can also be achieved by creating a low pressure (i.e. vacuum) on one side of the substrate 1 or POPs the second side of the substrate 1. Side of the substrate 1, on which a high pressure or low pressure side and angle relative to the direction of the handle, which moves fluid depend on the desired polar angle. Preferably, fluid medium flow was air, but can also be used for other gases and liquids. Used herein, the term "high pressure" refers to pressure greater than the pressure of the surrounding air or other fluid surrounding the teeth 2, when they give the polar angle. Used herein, the term "low pressure" refers to a pressure less than the pressure of the surrounding air or other fluid medium which surrounds the teeth 2, when they give the polar angle.

It should be clear that it would be useful to have a high pressure and/or low pressure from other sources than the side of the substrate 1. I.e., the source of high pressure and/or a source of low pressure can be arranged so that the teeth 2 turned or pulled in more than one direction, giving the fastening element is more isotropic resistance to separation. As an example, the vacuum source may be located near the sides of the substrate 1 and the pressure source may be razmemosti from the middle of the substrate 1 to its sides.

When to make the teeth 2 of the polar angle using the pressure difference, the selected turbulence of the fluid will often lead to the destruction of some teeth 2 or giving unwanted polar angle. To minimize destruction of teeth 2, it is desirable to minimize turbulent flow of the fluid and maintain a more calm or laminar flow. There are a number of available ways to get essentially laminar flow.

In one method of obtaining a laminar flow using one or more nozzles or flow amplifiers to make the flow of the regulated areas. As an example, can be used for two consecutive amplifier airflow. The first amplifier air flow P (Fig. 9) produces a flow from its outlet directed across the substrate 1. The second amplifier air flow V sucks its flow inlet in a direction transverse to the direction of substrate 1. Output stream of the first amplifier air flow P is sucked to the suction port of the second amplifier air flow V, creating essentially linear thrust of air. Amps air flow is oriented relative to the substrate 1 occitaine place applications linear pull air directly under the stream of hot cutting wire 24 (Fig. 9 not shown). Outside air flow can be excluded by using the casing (Fig. not shown) surrounding the application area linear draught of air. The desired air pressure may vary, but is acceptable air pressure of approximately 1-10 psi.

Another suitable way of making the teeth 2 of the polar angle is the deviation of teeth 2 mechanically by turning or physically by pulling teeth 2, when they are partly or fully in the liquid state. Another example is the use of vibrating or rotating cutting tool, such as a hot wire (not shown), for rotating or pulling teeth 2 to obtain the desired polar angle in the separation of teeth. There are other ways to perform this operation.

You must also specify that you can give the teeth 2 of the polar angle by using a combination of methods variance of teeth 2. An example of the use of combinations of methods is the application of a combination of gravitational forces and pressure difference across the plane of the substrate 1 to make the teeth 2 of the polar angle. Another example is the use of gravitational forces in combination with a rotating cutting creditsystem 2 polar angle, and combinations of methods.

For example, it is known that the mechanical fastening systems are not easily polluted with oils and powders, as the mounting system on the basis of the adhesive tape and, in addition, can be reused. All these features provide advantages when used disposable diaper 28 intended for children. In addition, the fastening system made with the possibility of re-connection provides the advantage that you can test dirty if the baby disposable diaper 28 for a while, during which time he wears it.

In Fig. 6 shows a disposable diaper 28 designed to be worn by the child at the bottom of the trunk. Used herein, the terms "disposable absorbent article" refers to the integuments, which are, as a rule, small children or persons suffering from incontinence, and which are placed between the legs and fastened around the waist of the one who wears them, and should be discarded after one use, and not be subjected to washing or repair. "Disposable diaper" is a special disposable product designed to be worn by a small child.

Preferably diaper 28 contains moisture the Top layer 29 and the bottom layer 30 is at least partially connected at the periphery, to ensure the retention in position of the layer 31. It is well known that elements of the diaper 28 can be assembled in various designs.

As noted above, the upper layer 29 and the bottom layer 30 of the diaper 28 at least partially connected at the periphery, for example, by using hot-melt glue. The layer 31 may have a length and width generally less than that of the upper layer 29 and the lower layer 30. The layer 31 is placed between the upper and lower layers 29 and 30 in a fixed position.

The periphery of the diaper contains 28 located opposite each of the first and second ends 32 and 33. Diaper 28 has a first belt portion 34 and the second waist portion 35 extending, respectively, from the first end 32 and second end 33 of the periphery of the diaper 28 in the direction of the horizontal centerline of the diaper 28 at a distance from about one-sixth to about one third the length of the diaper 28. Belt 34 and 35 are part of the diaper 28, which when worn around the waist of the one who wears it, and are the high places of the diaper when the one who wears it worth it. Crotch 36 diapers is part of the diaper that is located between the first and second belt parts 34 and 35, which when wearing cloth between the legs of someone who dates the body. The absorbent layer is generally compressible, comfortable and non-irritating to the skin of the one who wears it. Preferably the layer 31 has first and second opposite sides and can optionally be additionally wrapped in layers of tissue. One the opposite side of the layer 31 facing to the upper layer 29, and the other to the bottom layer 30.

The absorbent layer 31 is placed on the bottom layer 30 and preferably connected with him by any means known in the art, for example by means of adhesive bonding. In a particular preferred embodiment, adhesive bonding is carried out in a longitudinal adhesive strips that connect layer 31 with the lower layer 30. The bottom layer 30 is water resistant, prevents the penetration of fluids absorbed and contained in the absorbing layer 31, which could wet underwear, clothing, bedding and other objects in contact with the diaper 28. Used herein, the term "lower layer" refers to any impervious layer, while wearing the diaper located outside layer 31, which holds the liquid absorbed by the diaper. Preferably, the bottom layer 30 has been polyolefin film thickness of approximately 0,012-0,051 mm th finish, to be more like the clothes, or provided with channels to ensure the release of vapor.

The top layer 29 is pliable, accepted to the touch and non-irritating to the skin of the wearer of the napkin. The top layer 29 prevents the contact of the absorbing core 31 and the liquid in it with the skin of the one who wears the cloth. The top layer 29 is moisture-permeable, allowing fluid to easily pass through it. Used herein, the term "upper layer" refers to any water-absorbing layer, which when worn in contact with the skin of the wearer of the diaper, and prevents the contact layer 31 with the skin of someone who wears a diaper. The top layer 29 may be made of woven, non-woven, spun or lint materials. The preferred upper layer 29 get known method of screening and thermocautery nonwoven materials. In particular, the preferred upper layer 29 has a weight of approximately 18 to 25 g/m2the minimum tensile strength in the dry state of about 400 g/cm in the process direction, and the tensile strength in the wet state of at least about 55 g/cm in the direction transverse to the direction of processing.

Diaper 28 provided with a fastening element 37 is ulozhenie when placing napkins so, to diaper 28 was attached to the body of the one who wears it. Thus, the diaper fits someone who wears it, and formed the side cover, when the fastening system 37 is fixed on the receiving surface 38.

The fastening element 37 must be able to withstand the impact forces of the Department, which are applied while wearing. The term "force Department" refers to acting on the fastening element 37 and the receiving surface 38 of the efforts that tend to cause separation, release or removal of the fastening element 37 of the receiving surface 38. Forces branches include both shear strength and breakout forces. The term "shear strength" refers to distributed forces acting generally tangent to the receiving surface 38, and which may be presented, typically parallel to the substrate plane of the fastening element 37. The term "power margin" refers to distributed forces acting generally in the longitudinal direction and perpendicular to the plane of the receiving surface 38 and the substrate of the fastening element 37.

Shear strength is measured by stretching the fastening element 37 and the receiving surface 38 in opposite directions generally parallel to pianoi surface 38 when the input angle is approximately 135o.

Forces branches usually formed when the one who wears the cloth moves or tries to undo the diaper 28. As a rule, neither the child should not be able to undo or remove the diaper, which he wears, neither the diaper should not be unfastened in the presence of conventional forces branches that occur under normal wear. However, an adult should be able to remove the diaper, to be replaced when it becomes dirty, or when you need to check, clean it. Typically, the fastening element 37 and the receiving surface 38 must withstand the force of separation, at least equal to 200 g, preferably at least about 500 g, and more preferably at least about 700,

In addition, the fastening element 37 and the receiving surface 38 must withstand a shear force of at least 500 g, preferably at least about 750 g, and more preferably at least about 1,000,

Reception surface 38 may be located in the first position anywhere on the diaper, to foster the surface could be coupled with the fastening element to maintain the first and second belt parts 34 and 35 in the overlapping position. For example, the receiving surface 38 may be placed on NR the diaper, it is to grapple with the fastening element 37. Reception surface 38 may be integral, discrete element connected with diaper 28, or a single piece of material, which is an integral and inseparable element of the diaper, for example, from the top layer 29 or the lower layer 30.

Although reception surface 38 may have various sizes and shapes, reception surface 38 preferably contains one or more composite plots located on the outer surface of the second belt portion 35 to provide adjustment maximum adhesion to the waist of the wearer of the napkin. As shown in Fig. 6, the receiving surface 38 is preferably integral element of elongated rectilinear shape, attached to the outer surface of the second belt part 35.

Acceptable receiving surface 38 is a non-woven material, stitched material or another type of fibrous or having loop material, well known in the art. Reception surface 38 can be obtained from many materials, which are elements of the fibers, preferably of a loop that can be captured and retained by means of gearing. Suitable materials include nylon is Ani. Another acceptable reception surface 38 contains a knitted material having lots of nylon filament loops projecting from the nylon Foundation.

The fastening element 37 is designed to engage with a complementary receiving surface 38 to ensure tight fastening of the diaper 28. The fastening element 37 can contain any well-known construction used to achieve lateral cover disposable diapers 28. The substrate of the fastening element 37 is connected to the film 28 and is moved relative to the receiving means 38. As shown in Fig. 6, the fastening element is preferably located on both the first and second longitudinal sides of the diaper 28. The preferred design of the fastening element minimizes any possibility of contact between its teeth and skin of the one who wears the cloth. The preferred location of the fastening element has the form of V-shaped tape.

The fastening element 37 shown in Fig. 6 has an end 39 and an oppositely located end 40 of the consumer. The end 39 is connected with diaper 28 preferably side by side with the first belt part 34. The end 40 is a free end attached to the receiving surface 38 when the diaper Sacramento mount 37 is mounted with the possibility of release to the receiving surface 38 and preferably is placed on the second belt part 35, as a result diaper covers the waist of the one who wears it. Now, the diaper has an impact on the side cover. Teeth (not shown) extend from the fastening element so that the engagement teeth capture strand receiving surface 38.

The fastening element 37 and a complementary receiving surface 38, which provide resistance to the efforts of margin of more than 700 g and the resistance to shear of more than 1000 g, can be produced in accordance with the specific parameters of the fastening element obtained as described above. Complementary receiving surface 38 that is used together with the fastening element 37, is the above-mentioned stitched with loops of cloth.

The fastening element 37 has at least approximately 2.54 cm in width and may be of any length, length, which provides a convenient end 40 of the user, and the preferable length is at least a 3.5 cm Matrix of teeth of the fastening element 37 includes a matrix having approximately 26 teeth/cm2. The teeth are preferably oriented essentially in the same direction and facing toward the end 40 of the consumer, representing the end of the mounting tape.

When used in what utageleniem the rest of the diaper between the legs bearing, so the second belt portion 35 is placed on the front bearing. Then the end 40 of the fastening element 37 is fixed to the receiving surface 38 on the outer surface of the second belt portion 35 to form the side cover.

1. A method of manufacturing a material with prongs for fastening element by heating a thermoplastic material at least to its melting temperature, causing it deals by means of discretely on a moving substrate, pulling discretely deposited on a substrate of thermoplastic material in the direction parallel with the substrate vector component with the formation of a thermoplastic material on a substrate tel teeth, Department of teeth from damaging tool and the formation at the free end of each prong of its means of engagement, characterized in that the body of the teeth in the projection on the substrate have inclined to the direction of movement of the substrate under an angle of 20 - 160omainly 45 135oand most predominantly 60 - 120o.

2. The method according to p. 1, characterized in that the body teeth are placed at an angle to the direction of movement of the substrate by rejecting formed teeth until they are cured.

3. The method according to p. 2, characterized the Board, perpendicular to the direction of movement of the substrate.

4. The method according to p. 3, characterized in that as the fluid is used mainly laminar gas flow across the substrate, and the pressure difference of the fluid is equal to 1 to 10 pounds per square inch, and it is generated by the formation of the substrate areas of high and low pressures.

5. The method according to p. 4, characterized in that the laminar gas flow across the substrate create by holding gas at least one amplifier of the flow, mainly through the first and second amplifiers to provide suction opening of the first amplifier of the second gas flow amplifier.

6. The method according to p. 2, characterized in that the deviation of teeth is carried out by exposure to the teeth of gravitational forces.

7. The method according to p. 6, characterized in that the impact on the teeth of the gravitational forces generated by the deviation of the substrate from the horizontal in the vertical plane, mainly by tilting the substrate to the horizontal at an angle of at least 15omainly 30o.

8. The method according to p. 2, characterized in that the deviation of teeth is carried out by exposure to gravitational forces and the fluid when the difference Esoterik has United with the substrate at the base of the body and the tool engagement, United with the body teeth and protruding laterally beyond the side surface of the body having adjacent to the base and protruding from the substrate near the end and located with an inclination to the plane of the substrate under the front angle, different from its rear angle, characterized in that the body of the tooth in the projection on the substrate is tilted to the direction of movement of the substrate during the formation of teeth at an angle 20 160omainly 45 135oand most predominantly 60 120o.

10. Absorbent article containing a United one with the other of the upper and lower layers, placed between the absorbent layer and the means of fastening with the fastening element made of a material with teeth, characterized in that the material with teeth is a obtained by the method according to PP.1 8 material.

 

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FIELD: equipment for retaining and/or connecting various members, such as shoe parts, bracelets etc.

SUBSTANCE: retaining and/or connecting device comprises two members A, B including teeth 2 and slots 5, respectively, said slots being adapted for receiving of teeth upon connecting of both members. Teeth 2 are manufactured from elastic flexible material and deformed in slots 5 upon connecting of both members so as to provide for holding of both members A and B together. Said teeth recover their shape after disconnecting of members A and B from one another. Said device is also used in bracelet and shoe part.

EFFECT: increased wear-resistance, provision for keeping of good fixation even after prolonged operation, and also precise fixing in desirable position.

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FIELD: medicine.

SUBSTANCE: invention relates to disposable sanitary towels used to protect items, such as chair pillows, bed-clothes or a changing table. A sanitary towel contains a longitudinal symmetry line, the first and second longitudinal edges, and the first and second transverse edges. The sanitary towel also contains a top layer for liquid reception turned to the user, and essentially fluid-tight bottom layer turned from the user. The sanitary towel is provided with a belt to attach the sanitary towel to the user so that to ensure the towel follows the user while moving.

EFFECT: application of the invention provides protection of the item to be protected owing to that the towel is fixed concerning the user and the item.

37 cl, 7 dwg

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