High speed jet printing on rolled materials or on ready products

FIELD: production methods; jet printing.

SUBSTANCE: method of high speed creating of multicolor printings during steam processing is foreseen: providing as minimum two steam printings heads, working on high operational frequency, and the printing heads, working on high operational frequency, allow to process the ink with phase changing; providing as minimum two kinds of oil going trough them, and the passing of the base under the printing heads with the speed of 1000 foots per minute; where on the base is formed as minimum one illustration during the process of steam processing. The method of providing high speed, resistant to coloring and other surfaces under the touching of print during the process of material steam processing with using of inks with phase changing is overseen: the providing as minimum one set of printing heads, allowing to use ink with phase changing, with frequency 20kHz, the material providing; the providing of the system for transporting of the material, which allows to transportate the material under the printing heads; providing of great amount of inks with phase changing; transportation of material over the printing head sets with the speed 1000 foots/minute, ejection of ink as minimum from two printing heads to the material, for illustration forming. The method of providing high speed, resistant to coloring and other surfaces under the touching of print during the process of material steam processing with using of inks with phase changing is overseen: the providing as minimum one set of printing heads, allowing to use ink with phase changing, with frequency 20kHz, providing of porous material; providing of transportational system of material, which allows to transportate the material under the printing heads; providing of great amount of inks with phase changing; transportation of material over the printing head sets with the speed 1000 foots/minute, ejection of ink as minimum from two printing heads to the material, for illustration forming; on the stage of ejecting of inks its formed the illustration, which has up to 200 points/printing head/ liner inch.

EFFECT: under the decreasing of the costs it is decreasing the amount of trash and increased the efficiency.

33 cl, 1 dwg

 

The LEVEL of TECHNOLOGY

Piezoelectric inkjet printing device, operating on the principle of "drop-on-demand, for a sufficiently long period of time use for drawing ink on various substrates. Usually in piezoelectric inkjet printing device, operating on the principle of "drop on demand"principle is used to eject individual droplets of ink on a substrate in a given pattern to be printed. Such a device typically includes a host of nozzles with a sequence of holes, many managed print heads and the controller. Holes in a certain way are arranged in a vertical row, and a conventional inkjet printing device includes multiple printheads associated with each hole. Management of print heads is performed using the controller that the operator encodes to work with the printhead in accordance with a programmed plan printing of one or a sequence of characters or symbols.

Each hole is made so that it throws one drop of ink in each run of the associated printhead. Droplets emitted in accordance with a programmed sequence, directed to the substrate on which the printed character or symbol. To ensure print quality produced using inkjet PR is narow, working on the principle of "drop-on-demand, it is necessary, inter alia, to provide precise control over dot size ink, which hit on a substrate. On the point size, in turn, affects the size of the ink droplets ejected from the nozzle.

In the past, in the General construction presented interrelated characteristics of the printhead, the hole size and characteristics of the ink, it was important to ensure that the droplets not only had the required size, but also to match the size of the droplets, since, otherwise, the printed characters or symbols would have a nonuniform width. Of course, the substrate or the material can also affect the resulting image.

It should be noted that in the field of piezoelectric inkjet printing has been significant progress to date, however, piezoelectric inkjet printers were limited by the fact that they did not provide the possibility of high-speed printing in the production process. The inability of the known devices provide high-speed printing was caused partly by the inability of the processing of the ink so that they quickly dried. That is, previously used ink was insufficient to properly dry out and therefore is not allowed to reach or maintain the desired alignment. Thus, itki provide high-speed print production process that led to or caused the deterioration of image quality, if at all such an image can be obtained.

In addition, until recently, piezoelectric inkjet printheads, which allowed a high frequency to use inks and other compositions were not available. Development of design printhead has led to the creation of a device for inkjet printing, which allows to work with high frequency, in accordance with the present invention. However, just the ability to work at high frequencies does not use all of the ink compositions and, therefore, does not provide support for combining printing, in particular, when the printer operates with a high frequency, while the material is passed under it at high speed. Because it's one thing to work on high frequency or high speed and quite another - to work with high frequency and high speed.

Thus, a need exists in the way in which the recently developed print heads could be used to provide high-speed printing in the process of threading materials.

Although in conventional inkjet printing device was made many improvements, piezoelectric inkjet printing device, currently available, it is not possible to create multi-color from the images, obtained in the process of threading with high speed, not to mention the fact in order to secure it in one pass of the device above the substrate (or in a single pass of the substrate along the device). Also there remains a need for a substrate that can be used during high-speed printing, the material which would provide a higher level of resistance to staining other surfaces by touch than was achieved earlier with the same printing conditions.

The INVENTION

Printing the image on the personal care product currently performed outside of the production process using conventional technology contact printing and solvent or water-based inks. The current approach when printing makes use additional stage of processing of the material, which cause the seal, which increases the cost and amount of waste. The ink used in the classic printing technologies also require the stages of drying, which does not allow for cost-effective performance. Contact printing systems are known ink printing, ultimately, does not allow for efficient operation at linear speeds typical of machines that produce products for personal hygiene. As such, the costs associated with samedl the of production, due to the need for contact printing, often limit the number of printed images, which could be put on disposable products for personal hygiene. For these reasons, the print on the personal hygiene products and similar products in the production line up to the present time was limited technologically.

The present invention is directed to a tool that provides the transfer of graphic images of suitable quality for personal hygiene products and similar products using cost-effective way, while reducing the total cost of production, equipment, reducing waste and increasing efficiency.

The present invention relates to a method of creating multi-color images obtained during high-speed threading. The method involves (i) providing at least two printheads, working with high working frequency, and the print heads operating with a high frequency, allow the use of ink phase change; (ii) providing at least two kinds of ink phase change; (iii) providing a substrate; (iv) activation of the printhead so that at least two kinds of ink pass through them; and (vi) passing the substrate under the print heads with a speed of at least about 1000 feet the in a minute; in which the substrate is formed of at least one image in the process of mass production. In one embodiment of the method, in accordance with the present invention, the print heads may have operating frequencies of at least about 20 kHz. Ink phase change, preferably represent a hot-melt ink phase change. In another embodiment, the ink can be made on the basis of wax.

In yet another embodiment, the present invention is directed to a method of providing high speed, resistant to staining other surfaces by touch, print stream processing material using ink phase change. The method involves (i) using at least the set of printheads that can handle the ink phase change with frequency, at least about 20 kHz; (ii) the presentation of the material; (iii) ensure that the system of transportation of the material, which allows to transport or move the material under the print heads; (iv) provide many kinds of ink phase change; (v) transportation of material under a set of printheads with a speed of at least 1000 ft/min; and (vi) the ejection of the ink, of at least two of printheads for the material for forming, for less than the least partial image generated in the process of threading. Stage of ejection of the ink may include a combined application of ink. Depending on the frequency with which work printheads, at the stage of ejection of ink can form an image having a dot density up to 200 drops/printhead/linear inch. In other embodiments, execution of the ink can form an image having only up to about 100 drops/printhead/linear inch. Ink can be selectively deposited on the entire substrate or in part, may be deposited on a substrate in the form of a specific pattern and/or may be deposited on a substrate to create a specific surface topography. In one embodiment, the multiple kinds of ink may include ink, at least two different colors. In an additional embodiment, the image formed on the material, can be a multicolor image. In yet another embodiment, the method may further include a control in which the control is connected to at least one set of printing heads and in which the control adjusts at least one set of printing heads so that the ink ejection on the material with a combination of image is.

BRIEF DESCRIPTION of DRAWINGS

The drawing schematically shows an example of performing the method according to the invention.

DEFINITION

Used herein, the term "chemical composition" or "chemical composition" is intended to include and refer to any or all uses ink (in addition to the ink phase change), compounds, compositions, etc.(including ink containing solid substances and/or particles)that can be used in this HP printheads according to the invention. Preferably, though not necessarily, the term "chemical composition" or "chemicals" is aimed at such applications inks, compounds, compositions, etc. that are compatible with the ink exchangeable phase. The corresponding chemical composition includes medicines, inks, waxes, paints, lotions, ointments, agents for skin care products, drugs for exterior use, etc. or combinations thereof, but is not limited to them. It should be understood that one such chemical compounds can be a carrier, which is used to transfer or transport of ink exchangeable phase. Examples of the carrier include linear polyethylene with a low molecular weight, but are not limited to.

Used herein, the terms "contains", "containing" and other cognate derivatives of the term "contain" are a revelation is made, the terms, which determine the presence of any of these properties, elements, integers, stages or components, but do not preclude the presence or addition of one or more other features, elements, integers, steps, components or groups thereof.

Used herein, the term "material" means all woven, knitted and non-woven fiber fabric, and paper, foam, film or the like.

Used herein, the term "product for medical care" means medical bathrobes, bedsheets, clothes as well as devices that you can use in a medical procedure.

Used herein, the term "ink" refers to ink exchangeable phase. Used herein, the term "layer"when used in the singular can have the dual meaning of a single element or multiple elements.

Used herein, the term "fiber blown from the melt" refers to fibers formed by extruding molten thermoplastic material through a lot of thin, normally round up of capillaries as molten threads or fibers into converging high-speed flows, usually hot, gas (e.g. air), which pull the filament from molten thermoplastic material, reducing their diameter, which may be the diameter of the microfiber. After atagoyama from the melt fiber is transferred to a high speed gas stream and deposited on the surface of the collection for forming webs of randomly dispersed fibers, removed from the melt. Such a process is described, for example, in U.S. patent 3849241 authors Butin and other fibers blown from the melt, are microfibers which may be continuous or may be discontinuous, typically have an average diameter less than 10 microns and usually remain tacky at their deposition on the collecting surface.

Used herein, the terms "nonwoven" and "nonwoven material or fabric" means a fabric having a structure of individual fibers, filaments or fibers, which are mutually stacked, but without the use of an identifiable manner as in a knitted cloth. Non-woven material or fabric can be formed from many processes such as, for example, from melt blown, spunbond processes of production, the formation of the United Cardin paintings. Basic weight non-woven materials is usually expressed in ounces of material per square yard (UCA, osy) or grams per square meter (g/m2), and the fiber diameter is usually expressed in microns. (It should be noted that to convert UCA in g/m2you must multiply the value in UCA on 33,91).

Used herein, the term "personal care product" or "absorbent personal care product" means diapers, training pants, swimwear, absorbent underpants, salve the Ki for infants, products for adult patients suffering from incontinence, medical wipes, wet wipes, products for female hygiene, dressings for wounds, sanitary pads, patches, disconnect after some time, bandages, food for the dead, veterinary products, hygienic and absorbent products, etc.

Used herein, the term application of chemical composition, ink, liquid, material or the like with the "phase change" refers to a material that is processed in liquid or essentially in the liquid state and which then hardens, returning to its natural state by cooling, curing, crosslinking or the like.

Used herein, the term "fibers obtained spunbond method" refers to fibers with a small diameter, which are formed by extruding molten thermoplastic material as filaments from a variety of fine, usually circular capillaries of a Spinneret, and the diameter of the extrudable threads quickly reduce, for example, as described in U.S. patent 4340563 authors Appel and others, and in U.S. patent 3692618 authors Dorschner and others, U.S. patent 3802817 authors Matsuki and others, U.S. patent 3338992 and 3341394 author Kinney, U.S. patent 3502763 author Hartman and U.S. patent 3542615 authors Dobo and others, fibers obtained spunbond method usually are not sticky when nano is drawn on the surface of the collection. Fibers obtained spunbond method, are generally continuous and have average diameters (in a sample of at least 10 fibers) larger than 7 microns, more specifically from about 10 to 20 microns.

These terms can be determined in other parts of the description.

Used here, the term in the singular usually includes the plural, and the term used in the plural, in General, includes the singular, unless specified otherwise.

DESCRIPTION of TEST METHODS

Resistance to staining other surfaces when touched with the intended use of the product refers to the resistance of the transfer ink from the printing substrate to another substrate (e.g., clothing)in contact with the product. For determination of resistance to staining other surfaces when you touch materials in accordance with the present invention used a modified test method ASTM F 1571-95 using device Sutherland Ink Rub Tester. Modification of the method in accordance with test method ASTM consisted in the fact that the two rubber pads size 1 inch x 2 inch (supplied by DANILEE COMPANY) was applied to the ends (one pad on each end) of the bottom surface of the scales so that the pad was applied load, with the element of 1 pound per square inch (pci). The second modification of the method test methods ASTM standard was that instead of microtine supplied by Buehler, which was blennow fabric like muslin with the number of threads 80 x 80, used the fabric Crockmeter Cloth #3 (supplied by Testfabrics, Inc., with offices in Pennsylvania) for its adjustment to printed material. It should be noted that the method of ASTM identified as intended for submission to the procedure of measurement of resistance to abrasion and a tendency to contamination of typewritten text and images are caused by way of the blow; however, in the modified test method used for testing images using an inkjet printer. The procedure has also been modified so that the tester worked 40 cycles, not 10. The modified method also includes visual comparison of the color, which was moved to the muslin cloth in ATSS 9-Step Chromatic Transference Scale (1996 edition) (supplied by American Association of Textile Chemists and Colorists, with offices in Research Triangle Park, North Carolina) to determine the coefficient of resistance to staining other surfaces when touched in the range between 1 and 5. Level 5 indicates no color shift on muslin fabric.

DETAILED description of the INVENTION

The present invention relates to a JV is the way to create a multicolor image, obtained in the process stream processing with high speed. The method involves the use of at least two printheads 10 working with high frequency that allow you to use the ink phase change, providing at least two ink 14 phase change, providing the substrate 16, the activation of the print heads so that at least two types of ink pass through them, and moving the substrate 16 under the print heads at a speed of at least about 1000 feet per minute, in which at least one processed image (not shown) is formed on the substrate 16. In one embodiment of the method according to the invention of the printing head can operate with a frequency of at least approximately 20 kHz. You can apply any appropriate print head provided that it allows you to provide work on a given frequency using one or more of the described species of ink phase change. Preferably, the ink phase change was a hot-melt ink phase change and, in some cases, more preferably, the ink phase change were based on the wax.

Although in the present description reference is made to the transmission, transfer or transportation of the substrate or material under the printhead, assumes the I, this term includes moving the printhead under the substrate or the combined movement of the printhead and material to ensure the desired production speed.

As described in more detail here, the ink phase change, in particular hot-melt ink, and more specifically, ink-based wax allows you to provide the required high speed printing, since the ink phase change does not require drying. Previously, the drying time of the ink compositions used in printers, limited performance. The use of ink phase change eliminates the use of additional stages of drying and/or eliminates the need for a gap between the print heads, which was previously necessary. Thus, the desired combination of image and its quality can be achieved at high speed.

The image produced in accordance with the methods described herein may also be the result of the processing properties of a liquid printheads some suitable devices. Thus, in some print heads is provided degassing ink that creates a more preferable condition for the formation of high-frequency jet, because it results in fewer breaks when the ink in the print heads. It was definitely the Leno, by using a combination of ink with variable phase and abilities degassing the ink when processing provided the best results. In fact, so were achieved operating frequency of the printhead, exceeding the previously used frequency.

In yet another embodiment, the method can include using a controller or means 18 management, in which management tool is connected with the print heads. The tool 18 management, preferably, provides a multitude of modes and controls the print heads 10 so that the print heads 10 are working together or independently of each other. It should be understood that any number of controls can be used in the present invention is based, in particular, on the number of printheads, which is associated with each management tool. As controls, for example, you can use the manual control or the management computer, or you can use adjustable computer controls (for example, manual switches, controlled line switches, photo-optical sensors, as well as circuit switching, managed programmatically).

Also the drawing shows part of a system of material handling, including baraban and many of the supporting rollers 22. The drum 20 and the auxiliary rollers 22 are designed so that they are compatible with the material 16, which passes through them so that the material 16 over or around the drum 20, in essence, is not going to fold on the canvas or in separate places. Auxiliary rollers 22 can be adjusted so that the material was applied to the desired tension level to reduce or eliminate wrinkles, which, otherwise, may be formed on the material 16, when it is passed around the drum 20, without the application thereto of a certain tension force. Thus, the auxiliary rollers 22 can be used to create or maintain the desired tension of the material 16, as it is passed over or around the drum 20. It should be understood that although the drawing shows here and declared the drum 20, the present invention is not limited to this, and this term is intended to refer to, or include, but not limited to any and all surfaces, which could be material, which cause the printed image, and print the material as it passes over or on the printed surface. In addition, although reference is made in many of the supporting rollers 22, it is also assumed that the scope of the present invention includes any other suitable tool that can be used to maintain or regulate the tension of the material as as the material passes under the print heads. In addition, it should be understood that although the distance or gap between the print heads and the material on which they are printed, you can change, however, it is preferable that the material was at a distance of from about 2 mm to about 3 mm from the printhead when the ink ejection during printing. It should also be understood that when the drum and a set of auxiliary rollers or similar sites are used as part of a system used to transport material, print heads can be installed next to the print head in the desired position so as to ensure the required clearance or gap between the printhead and the material passing over the drum. It should be understood that the use of a drum or similar site provides the ability to print well combined images, because it is possible to maintain a relatively constant distance between the print head and the material.

In one embodiment of the method according to the invention the ink and/or a chemical composition applied to the material or substrate, may have a different degree of penetration into the material, and using different degree of penetration of the ink and/or chemical compositions, it is possible to obtain a material having a different terrain types is resti. It should be understood that the degree of penetration may vary, partly due to the temperature at which the process ink and/or the media, if it is used, the type of material, which cause the ink and/or the composition of the ink, and/or media, if such is used. Thus, for example, in the case where the material is susceptible to penetration, if the ink flow through one or more printheads at the preferred temperature of at least about 115°With, in General, you can expect a deeper penetration than at lower temperatures.

In another embodiment, one or more kinds of ink can be selectively applied to the entire surface or area of the substrate. Ink can be deposited on a substrate in a repeating or random image or pattern and can also be applied onto a substrate for forming a barrier to fluid. As will be described in more detail below, at least two kinds of ink can be applied in this way on at least a section of the material or substrate to form a processed image; however, any or all other parts of the material, inks and/or chemistries can be applied to individual segments were overlapped or were placed continuously and/or in some SL is the teas are mutually connected (i.e., when an individual drops of ink are merged or combined) to form individual sections or areas. Individual segments and, in particular, continuously spaced segments can form or areas, or portions of the substrate with, for example, barrier properties for liquids, with the characteristics of the channel translating, etc. in addition to the image drawing or separately from it. In another embodiment, the material according to the invention is provided by the formation of the surface relief of the applied chemical compositions, which allows you to get superior treatment fluid and/or isolation from her skin.

Although it is generally required that the ink after application remained in place on the material or substrate to which they were applied (i.e. that they are not separated), in some cases it may be desirable to at least some plot ink was separated. Alternatively, there may be occasions when the ink remains in place, but one or more chemical compounds, which are used together with the ink phase change, can be separated. Thus, although one or more embodiments, the execution may be preferable that the ink remained in place and/or showed a high level of resistance to staining other surfaces by touch, in places, the de were deposited ink on the media, or the like, one or more chemical compounds can be separated from the substrate or detach from other chemical compounds when exposed to certain conditions or when certain conditions occur (for example, when exposed to a certain temperature (for example, at least approximately body temperature (approximately 23° (C)when the ejection liquid, etc.)). Also provides that the Department of one or more chemical compounds with the substrate may cause or may lead to the inclusion of the process of destruction of the product or its part or substrate. Thus, the resulting product can be designed in such a way that the destruction will begin or will be initiated by the separation of one or more of the ink and/or chemical compositions of the product.

As indicated above, the method according to the invention provides for the stage using the substrate on which the ejected ink and/or chemical compounds may form discrete droplets or segments. Although preferably at least one embodiment of the invention that the material was a porous material and more preferably a polyolefin, methods and processes according to the invention include any appropriate porous or non-porous material. The suitability of a particular m the material may depend at least in part on ink and/or chemical compositions, used together with him. Examples of materials include woven, non-woven materials, paper, foam, film, fabric, metal, plastic, glass, laminates, but are not limited to and, in General, any surface of any substrate or product, which can be described here apply ink or ink and chemicals, using any of the described method to obtain material, such as described here. It is also foreseen that the material may contain or may be included in flexible packing product product fabric, product, health, personal care product, or one or more of their components, etc.

The combination of the four primary colors (e.g. cyan, Magenta, yellow and black) can be used to create a very wide range of colors, using, thus, significantly fewer printheads and color sets than in past processes. This approach not only reduces the cost of equipment and the amount of ink required to keep in stock, but also to reduce the number of required transforming equipment, space, and reduce the time costs associated with the color change, in comparison with the known devices contact printing. Although it was determined that a combination of four of the colors, the above is a simple, but flexible enough to meet these requirements, providing graphic images, you can also use various other color combinations. Examples of colour combinations include combinations with only one color, and combinations containing up to 12 colors, which allow us to provide a wider range of colors with more intense color concentrations. It should be understood that in combination can be used more than 12 colors of ink, however, the size of the drum (drums), used in the production, the number of printheads and/or sets of colors that are required for maintenance of various ink may limit the number of colors used.

It should be understood that the present invention can be used with ink of different colors, and it is desirable to use an ink having at least two different colors. In addition, in the case of using ink and/or chemical compositions with different colors, in the above described methods and processes the resulting pattern or image formed on the material, can be a monochrome or multicolor image. That is, for example, using yellow and blue ink, the resulting image may have a green color, and it may contain yellow and blue, or it may be green, yellow, and blue. Of course, you can also get many shades of each color.

Although the method according to the invention is not directed specifically at it, it can be executed, at least partially, using a device that is installed to ensure the printing process. That is at least two print heads must be installed so that their emissions or emissions overlap, at least partially, to create the applied image. Any orientation of the printhead, and all relevant configurations are considered suitable for use in the present invention. Although the basic principles of printing process (such as discussed in publishing Pocket Guide to Color Reproduction Communication & Control, by Miles Southworth (1972)) known to specialists in this field of technology, the ability of the printing process with high production speed, high operating frequency of the printhead, and/or some of the materials described here are not known to specialists in this field of technology. Up to the present time was not known printing using ink with variable phase described here working conditions.

In another embodiment, the present invention method may involve the use of a temperature sensor, and the sensor temperature is URS measures and, if necessary, provides temperature control of the ink and/or chemical compositions, which pass through the used print heads. It should be understood that more than one sensor can be used when applying a variety of ink and/or chemical compositions using the inkjet printing device.

It should be understood that the methods and processes described herein allow for the ejection of individual segments of the ink and/or chemical compositions, and although it is possible to use a separate segments with different sizes, separate droplets or segments, preferably, will have a capacity of from about 5 picolitres (or ng) to about 100 picolitres, more preferably from about 20 picolitres to about 90 picolitres, and even more preferably from about 50 picolitres to about 80 picolitres. Droplets or segments also, preferably, may have a length and width less than about 5 mm, more preferably, less than about 3 mm, and more preferably, less than about 2 mm, and greater than about 0.02 mm, the Ejection of individual segments, preferably, produce approximately with a frequency of at least 20 kHz, and more preferably with a frequency from about 20 kHz to about 40 kHz. In addition, ink and chemical composition having a substantial range of viscosity can be processed in accordance with the methods and processes, and learn more about Izanami here. Preferably, the viscosity of the ink and/or chemical compositions ejected from the print heads, ranged from about 5 to about 50 centipoise, and more preferably, from about 8 to about 30 centipoise at the time of emission (at higher temperatures the formation of the jet). In addition, since the print heads typically work with a wide range of control voltages, it should be understood that by changing the voltage with which the work print heads, you can ensure that the printheads with the higher frequencies while ensuring the required size or volume of the droplets, which thus allows to obtain a higher linear velocity of the material or process.

Although droplets or individual segments with a particular cross-sectional shape, the size or volume are provided and are preferred in certain embodiments of the run options run-in which is not required to provide a specific size or shape of the droplets, the possibility of deposition of droplets with many forms of cross-section or material in accordance with the present invention. During curing of the droplets, which are returned to its normal state at ambient conditions, education is the comfort cross connection etc. on the surface or under the surface of the substrate, it is possible to change the shape of their cross section or control, at least to some extent, depending on the selection of chemical compounds applied to the selected substrate and the device or method used for the application. In particular, for example, the cross-sectional shape of droplets that solidify at or below the surface of the substrate can be changed by selecting, for example, temperature, speed and distance throwing. Thus, for example, if the ink temperature or the chemical composition will be improved, they usually penetrate deeper into the substrate before harden, resulting in a more dome-shaped deposits of less height than the deposition, which is formed at a lower temperature. Alternatively, increased or deeper penetration, selection of temperature also allows you to provide better adhesion between the ink and substrate (in particular, thermoplastic substrate) in a way that provides better adhesion of the ink. Of course, depending on the intended functions of the domes (for example, the barrier liquid, the processing liquid, the insulation of the skin, aesthetic appearance, and so on), and when it is supposed to cause permanent or detachable floor, triboemission include weight, the shape and composition of individual plotted segments, which should be carefully selected, but are not limited to.

It should be understood that when using ink and/or chemical compositions have the temperature at which they begin to decompose. The temperature at which the decomposition may vary depending on the ink and/or chemical compositions, and, in General, should pay attention not to exceed the decomposition temperature during processing; however, it is envisaged that one or more cases of partial decomposition allows to provide the desired characteristics.

Though this is not required in this case, depending on the inks and materials, which are selected for use with each other, a higher level of penetration can lead to a higher level of resistance to staining other surfaces when touched. Although resistance to staining other surfaces when the touch is not necessarily dependent on the degree of penetration (as well as, for example, may form a chemical bond or interaction that improves resistance to staining other surfaces when touched), when the ink have a deeper penetration into the material, they are more likely to remain in place. It is preferable that the s ink images obtained in accordance with the processes and methods described and presented here has allowed us to obtain the degree of resistance to staining other surfaces by touch, at least, approximately equal to 4, in accordance with the process described above.

In yet another embodiment, the present invention is also directed to a method of providing high-speed printing process, image, and is resistant to staining other surfaces by touch, on the material using the ink phase change. The method involves (i) providing at least a set of printheads to ensure the processing of ink phase change at frequencies of at least approximately 20 kHz; (ii) provision of material; (iii) ensure that the transportation system of the material, which allows to transport the material under the print heads; (iv) provide many kinds of ink phase change; (v) transportation of material under a set of printheads with a speed of at least 1000 feet per minute; and (vi) the ejection of ink from the at least two printheads on the material, for forming at least part of the processed image. Stage of ejection of the ink may include a combined application of ink. Depending on the frequency with which work of PECs is surrounding the head, stage of ejection of ink allows you to create an image with resolution up to 200 drops/printhead/linear inch. In other versions of the ink can form an image having a resolution of up to approximately 100 drops/printhead/linear inch. Ink can be selectively applied to the entire surface or area of the substrate that can be applied to the substrate in the form of a specific pattern or randomly, and/or they can be deposited on a substrate so that will create a certain surface topography. As in other versions of the defined surface relief can provide or allows to obtain the preferred properties for healthy skin. Applying ink and/or chemical compositions for preparation of relief surface on a substrate can provide the final product or components on it, showing the improved management of fluid and/or isolation of the skin during use.

Many kinds of ink should include ink having at least two different colors. In yet another embodiment, the image formed on the material, can be a multicolor image. In yet another embodiment, the method may additionally provide for the control, to the which the control is connected, at least one set of printing heads and in which the control adjusts at least one set of printing heads so that the ink ejection on the material combination.

It should be understood that a piezoelectric inkjet printer, among other things, can be used in connection with the methods and processes described herein. At this stage of ejection or ejection of the ink and/or chemical compositions, at least one printhead may provide for the inclusion or run one or more of the at least one printhead. The method may also include the use of control or means of control in which the control is connected to one or more of the at least one printhead. The control allows you to adjust one or more print heads in such a way that ensures the ejection of the ink and/or chemical compounds or their emission to the substrate on which they are deposited so as to form a generated some pattern.

The control may also provide for adjustment in real time of emission of the at least one of the printheads. The adjustment in real-time forms or provides immediate or essentially immediate management or ISM is out of the mode of operation of the printing device according to the invention. The speed at which the device is used in connection with the present invention, in General, limited by time, approximately half of the minimum period of emission or pulse period, work printhead device. Thus, the minimum repetition period of the pulses or emissions corresponding printhead is the smallest period of time that you want to change the mode or location of release and return to the same position, or, in other words, the minimum repetition period of the pulses or emissions represents the shortest time required to complete the printhead between pulses or emissions. Since the speed of the print heads suitable for use in the present invention, continues to rise, will also increase the frequency of pulses or emissions, which will decrease the repetition period of the pulses. All these development options are considered in the present invention.

Management in real-time can also be performed using one or more sensors located along the device used to obtain the product or component thereof so as to provide a varying pattern, coating, quantity, location, etc. of the ink and/or chemical the ski trains. Change in real time mode the printhead or set of printheads may be preferable if you are processing many sizes or forms of materials, using a printing device, with different patterns, ways of application, its orientation, etc. you want to use depending on the processed product or component. Precise control of this system provides exceptional flexibility when applying graphic images that you can use to enable essentially instantaneous change graphics in the production process, creating the possibility of introducing new properties, such as a variety of packing or seasonal graphics, by simply clicking on the button that was not possible with commonly used printing technologies. Opportunity management in real-time or changes in production with the "shift on the fly" can significantly improve production compared to legacy printing technology in the production process, which used a fixed printed patterns, such as are used in printing rolls for Rotogravure and in which you want every time to turn off the production line when replacing VA the Cove to change the pattern or product.

In addition, print design, computer generated, or printheads, computer-controlled, allows to obtain an almost endless variety of design configurations and applications. A computer program can be configured to use mathematically expressed requirements of a specific substrate, the ink and/or chemical compositions, such as the size of the capillary, length, pressure, temperature, etc. for the development of the resulting material. After creating the design can be accurately reproduced on the substrate using inkjet printing in accordance with the present invention.

Because the patterns of images can be generated in digital form, allows almost infinite changes that can be made instantly. The use is described here ink phase change further expands the number of models that provide printing in the production process at speeds and with certain materials or substrates, which to date have been inappropriate or unattainable. That is, the use of ink with variable phase allows to provide different depths of penetration into the substrate or the degree of their adherence to mater the Alu, that and the past was achieved by using ink without changing phases. Accordingly, provides better resistance to staining other surfaces by touch, which up to the present time in some cases was unreachable.

Other embodiments of the methods and processes in accordance with the present invention can be applied in a required ink and/or chemical compounds in a single pass of the substrate past the printhead. The processes and methods according to the invention allow to provide this seal without the need for drying or chemical pre-or post-processing of the material, ink or chemical compositions. The ability to print in a single pass without the need for prior or subsequent processing or drying enables mass production. That is, the material or the substrate can be unwound, to apply a printed image and cut. Of course, it is also possible multi-stage production, but it is generally less preferred.

Although the method according to the invention, when it provides a set of printheads working (for example, having a longer time, or containing many rows of printheads etc) so that printing can be performed for the Dean passage of the printheads over the substrate or in a single pass of the substrate along the printheads in some cases, taking into account properties of the ink and/or chemical compositions, and, consequently, to obtain an image, pattern, topography, characteristics of control liquids, etc. may be preferable to manufacture or to use multiple passes of the substrate past the printhead. As noted above, the processes and methods according to the invention, in General, do not require pre-or post-processing, however, pre-or post-treatment is not excluded from the descriptions given here. In this approach, multiple passes may be preferable for several reasons, including, without limitation, when you want to provide pre-or post-processing of the material, ink or chemical compositions. In addition, it may be preferable to process the material using multiple passes of the substrate past the printhead using the processing Department of the coating or chemical compositions, as described, for example, jointly submitted an application for U.S. patent, No. 09/938,347 authors Yahiaoui and other

Although a large part of the present description, in General, relates to print heads, although there is a possibility of using any of the corresponding printhead, for use with the present invention is suitable printhead production is the business though Spectra, model Galaxy PH 256/80, which is a print head with piezo technology supplied by Spectra, Inc., with an office in the city of Lebanon, new Hampshire. It was determined that when using the printhead Galaxy PH 256/80, it is preferable that, she worked at voltages from about 100 to about 200, and more preferably from about 110 to about 185 In, to achieve the size and mass of the droplets and compatibility, which are described here. The above voltage are not intended for use with all inkjet print heads, but rather are mentioned as the preferred range for the concrete above the models head company Spectra. However, any and all operating voltages, which allow to ensure the constancy of the mass of the droplets in the other working conditions described here are suitable and are considered by the present invention.

In addition, although the print heads with the piezoelectric actuator have many operating characteristics of such devices usually allow you to throw droplets having a diameter in the range of approximately 50-90 microns, with a resolution of application, component, at least approximately 1/200 of an inch. This will involve the use of processes and methods in accordance with the present invention is any superior designs printheads with piezoelectric control or the like, which provide an increase in the frequency of emission or operating frequency of the printhead, the expansion of the range of the diameter of the droplets and/or resolution of the applied image.

Examples of other usable printheads include contactless printheads to eject droplets on demand, such as head using piezoelectric crystals and which allow the work in the range of from about 20 to about 40 kHz, and which emit droplets with sizes of up to approximately 80 ng, but not limited to. This ensures the release of the printhead from about 20,000 to about 40,000 droplets per second through each nozzle. Work printheads in this frequency range when using a typical velocity of a cloth or thread production, at least from about 1000 to about 2000 feet per minute (fpm) enables you to apply approximately 100-200 drops/hole/linear inch at a speed of at least about 1000 feet per minute and up to about 100 droplets/hole/linear inch at a speed of at least about 2000 feet/minute.

As a result of this disclosure, the resulting graphic image printed using four colors, can be applied in a linear processing performance, ensuring the th effective costs with minimal use of ink on these materials, which are used in personal hygiene products, etc. Such graphic images, in General, have a resolution from about 100 to about 200 drops per linear inch of any one color and from about 400 to about 800 droplets per linear inch when using a combination of four colors.

[Note: the Reference to the number of droplets per inch refers to the number of droplets per linear inch or droplets per inch in the machine direction, unless it will be specified otherwise. In addition, unless explicitly specified otherwise, a reference to the number of droplets per inch also applies to a single printhead or the hole and, thus, to a single color].

Thus, the present invention is directed to a method of applying a multi-color, combined graphical images on materials, preferably of personal hygiene products, health products, etc. by contactless application filing drops-on-demand ink phase change at the speed of production, typical for these products. Although it is possible to assume, or you can expect to receive benefits while increasing the number of samples/droplets per inch (dpi) on a typical media graphics using a variety of substrates, such as substrates used in production is the g disposable products (for example, products of personal hygiene and so on), the higher is the resolution does not lead to the expected benefits. This, in particular, relates to porous materials. Thus, increasing the resolution does not necessarily lead to a substantial improvement of image quality. However, depending on the material or substrate that is selected for use, and in particular for substrates used in products for personal hygiene, it was determined that by reducing the density of the ink droplets can be implemented acceptable quality graphics for the production of disposable products at an acceptable cost of production (e.g. capital equipment, ink and production costs). Thus, the use of printheads with a higher frequency of operation, with a reduced number of droplets per inch to get the image on the substrate provides the opportunity to continue working with production speed, which is efficient from a cost perspective in the industry and obtain an image of appropriate quality using less ink. That is, when using certain materials or end products acceptable to use a lower density (e.g., lower quality), graphics. Because the lower density of the graph which is satisfactory, provides significant performance improvement that allows you to increase production and reduce production costs.

Although the present invention has been described in detail with reference to specific ways of its implementation, the experts in this field of technology, while ensuring the understanding of the invention may directly consider possible changes, variations and equivalents of the described embodiment of the invention. It is assumed that the present invention includes such modifications and variations as if they were within the scope of the claimed in the claims and its equivalents.

1. The way to create a high-speed multi-color images during threading, providing

providing at least two printheads, working with high working frequency, and these print heads, working with high working frequency, allow you to handle the ink phase change;

providing at least two kinds of ink phase change;

providing the substrate;

activation of the print heads so that at least two kinds of ink pass through them; and

the passage of the substrate under the print heads with a speed of at least about 1000 feet per min;

in cotoran substrate is formed of at least one image in the process of threading.

2. The method according to claim 1, in which the print heads are working frequency of at least about 20 kHz.

3. The method according to claim 1, wherein the substrate is porous.

4. The method according to claim 1, wherein the substrate is a polyolefin.

5. The method according to claim 1, in which the ink pass through the printheads at a temperature of at least about 115°C.

6. The method according to claim 1, in which the ink are hot-melt ink phase change.

7. The method according to claim 1, in which inks are ink-based wax.

8. The method according to claim 1, wherein the substrate is a component of the products of personal hygiene.

9. The method according to claim 8, in which the personal care product is selected from a diaper, training pants, absorbent underwear product to adult patients suffering from incontinence, sanitary napkins, wet wipes, products for hygiene women, dressings, bandages, food for the dead, veterinary wipes, hygiene products, and absorbent products.

10. The method according to claim 1, wherein the substrate is a plot of the product for medical care.

11. The method according to claim 1, wherein the substrate is a part of the flexible packaging material.

12. The way to ensure high-speed, resistant to staining other surfaces when you touch the print process photoscelebrity material using ink phase change, providing

providing at least set the print heads, allowing you to use the ink phase change, with a frequency of at least about 20 kHz;

providing material;

providing a system for transporting material, which allows to transport the material under the print heads;

providing a variety of ink phase change;

transportation of material under a set of printheads with a speed of at least 1000 ft/min; and

the ejection of ink from at least two printheads on the material to form the image.

13. The method according to item 12, in which the material is porous.

14. The method according to item 12, in which stage of ejection of ink involves the combined application of ink.

15. The method according to item 12, in which stage of ejection of ink forms an image with up to 200 drops/printhead/linear inch.

16. The method according to item 12, in which at the stage of ejection of ink forms an image with up to about 100 drops/printhead/linear inch.

17. The method according to item 12, in which many ink ink contains at least two different colors.

18. The method according to item 12, in which the image formed on the material is a multicolor image.

19. Im is indicated in paragraph 12, additionally providing a control in which the control is connected to at least one set of printing heads, and in which the control adjusts at least one of the sets of printheads so that the ink ejection on the material to obtain a combined image.

20. The method according to item 12, further providing a control designed to control the ejection of ink from the printhead and to regulate the speed at which the material is transported under the print heads.

21. The method according to claim 20, in which the ejection of ink associated with the rate at which material is transported under the print heads.

22. The method according to item 12, further stipulating

the control is designed to control the ejection of ink from the printhead;

the control is designed to control the transportation of the material.

23. The method according to item 22, in which the ejection of ink associated with transportation of the material.

24. The method according to item 12, in which the ink are hot-melt ink phase change.

25. The method according to item 12, in which inks are ink-based wax.

26. The method according to item 12, in which the material is a plot of product l is offered by the hygiene.

27. The method according to p, in which the personal care product is selected from a diaper, training pants, absorbent underwear, products for adult patients suffering from incontinence, sanitary napkins, wet wipes, hygiene products for women, dressings, bandages, food for the dead and veterinary napkins, hygienic and absorbent products.

28. The method according to item 12, in which the material is a plot of the product for medical care.

29. The method according to item 12, in which the material represents a portion of a flexible packing product.

30. The method according to item 12, in which stage security system material handling, which allows to transport the material under the print heads, includes a drum and a set of supporting rollers so that the material is passed under the print heads, essentially without the formation of creases.

31. The method according to item 30, in which between material and at least one of the printheads is a gap, and in which the gap is from about 1 mm to about 5 mm, when the execute stage of ejection of ink.

32. The way to ensure high-speed, resistant to staining other surfaces when you touch print stream processing material using ink phase change, stipulating

about the ensure at least set the print heads, allows you to use the ink phase change, with a frequency of at least about 20 kHz;

providing a porous material;

ensuring a transportation system that allows to transport the material under the print heads;

providing a variety of ink phase change;

transportation of material under a set of printheads with a speed of at least 1000 ft/min; and

the ejection of ink from at least two printheads on the material to form the image;

in which stage of ejection of the ink image is formed, with up to 200 points/printhead/linear inch.

33. The method according to p, in which at the stage of ejection of the ink image is formed, with up to about 100 drops/printhead/linear inch.



 

Same patents:

FIELD: production methods; jet printing.

SUBSTANCE: method of high speed creating of multicolor printings during steam processing is foreseen: providing as minimum two steam printings heads, working on high operational frequency, and the printing heads, working on high operational frequency, allow to process the ink with phase changing; providing as minimum two kinds of oil going trough them, and the passing of the base under the printing heads with the speed of 1000 foots per minute; where on the base is formed as minimum one illustration during the process of steam processing. The method of providing high speed, resistant to coloring and other surfaces under the touching of print during the process of material steam processing with using of inks with phase changing is overseen: the providing as minimum one set of printing heads, allowing to use ink with phase changing, with frequency 20kHz, the material providing; the providing of the system for transporting of the material, which allows to transportate the material under the printing heads; providing of great amount of inks with phase changing; transportation of material over the printing head sets with the speed 1000 foots/minute, ejection of ink as minimum from two printing heads to the material, for illustration forming. The method of providing high speed, resistant to coloring and other surfaces under the touching of print during the process of material steam processing with using of inks with phase changing is overseen: the providing as minimum one set of printing heads, allowing to use ink with phase changing, with frequency 20kHz, providing of porous material; providing of transportational system of material, which allows to transportate the material under the printing heads; providing of great amount of inks with phase changing; transportation of material over the printing head sets with the speed 1000 foots/minute, ejection of ink as minimum from two printing heads to the material, for illustration forming; on the stage of ejecting of inks its formed the illustration, which has up to 200 points/printing head/ liner inch.

EFFECT: under the decreasing of the costs it is decreasing the amount of trash and increased the efficiency.

33 cl, 1 dwg

Up!