CN110667292A - Positioning gold stamping method for digital ink-jet wet transfer printing fabric - Google Patents
Positioning gold stamping method for digital ink-jet wet transfer printing fabric Download PDFInfo
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- CN110667292A CN110667292A CN201911005112.5A CN201911005112A CN110667292A CN 110667292 A CN110667292 A CN 110667292A CN 201911005112 A CN201911005112 A CN 201911005112A CN 110667292 A CN110667292 A CN 110667292A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
- B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
- B44C1/1729—Hot stamping techniques
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/003—Transfer printing
- D06P5/004—Transfer printing using subliming dyes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/30—Ink jet printing
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Abstract
The invention discloses a positioning gold stamping method of a digital ink-jet wet transfer fabric, which comprises the steps of firstly dividing the whole pattern into a gold stamping printing part and a coloring printing part, coating a release layer and an ink absorbing layer on a carrier, printing dye ink and digital ink-jet hot melt adhesive ink on the carrier in a nesting manner by a digital ink-jet printing machine to obtain a wet transfer carrier containing coloring dye and hot melt adhesive, wetting the fabric to be printed by wetting liquid, then attaching the fabric to the wet transfer carrier containing the coloring dye and the hot melt adhesive, pressing the fabric to pass through a heat transfer machine to obtain a printing fabric with the positioning hot melt adhesive, finally attaching the fabric to a gold stamping film, and pressing the fabric to enter the heat transfer machine to obtain the positioning gold stamping printed fabric. The invention creatively realizes the positioning gold stamping process of ink-jet wet transfer printing, realizes the positioning gold stamping process of printing on natural fiber fabrics, nylon fabrics, synthetic fiber fabrics and acrylic fabrics, and also enables the reactive dye, the acid dye and the cationic dye to be applied to the fabric gold stamping process.
Description
Technical Field
The invention belongs to the field of textile printing and dyeing, and particularly relates to a positioning gold stamping method for a digital ink-jet wet transfer printing fabric.
Background
Textile printing is divided into color printing and special printing. The coloring printing refers to dye printing or pigment printing, and is characterized in that a dye or pigment capable of dyeing textile fabric is applied to a local part of the surface of one side of the textile fabric through a physical or chemical method, and then the dye or pigment is deposited through a physical or chemical reaction, has certain bonding fastness with textile fabric fibers, forms a whole process of local dyeing on the textile, often uses four colors of red, yellow, blue and black as basic colors, and is blended to obtain various colors.
The special printing is to apply some special materials to the surface of the fabric by screen printing, roll coating, hand painting, transferring, electrostatic attraction, even 3D printing and other modes, finally form three-dimensional special effects of gold stamping, high solid, cracking, gold flashing, burnt-out, flocking and the like, and greatly increase the added value of the fabric. The most common gold stamping process is used, various gold colors, silver colors and laser interference effects are stamped on the fabric, and the market is particularly popular in recent years.
The ink-jet printing is a non-contact printing mode, and is characterized by that it uses printing dye to prepare ink-jet printing ink, and utilizes the computer to control sprayer to spray different quantities of ink on the printed fabric according to the depth of pattern. The ink-jet printing technology is a high and new technology product which integrates the machine, the computer electronic information technology and the printing and dyeing technology into a whole and is gradually formed along with the continuous development of the computer technology. The appearance and continuous development of the technology bring a brand new concept to the textile printing and dyeing industry, and the popularization and application of the ink-jet printing technology can generate great influence on the future development of the textile industry.
The digital ink-jet wet transfer printing process is one new kind of fabric environment protecting printing process, and includes compounding water soluble dye capable of dyeing fabric into CMYK multicolor ink capable of being sprayed through piezoelectric nozzle, spraying the CMYK multicolor ink onto the carrier with ink absorbing layer under the control of computer to form printed pattern, wetting fabric, adhering the carrier with the pattern to the wetted fabric, pressurizing, dissolving the water soluble dye in the carrier with water in the fabric under high pressure to complete the transfer of the dye from the carrier to the fabric, and this process is called ink-jet wet transfer printing. The digital ink-jet transfer printing technology has the advantages of energy conservation and emission reduction, vivid pattern, one meter printing, particular suitability for small-batch and various types, simple and convenient production and the like, and the digital ink-jet transfer printing technology belongs to coloring printing according to the description.
The gold stamping printing in the special printing is generally to print gold stamping glue on a gold stamping film through a gravure printing, attach the gold stamping film printed with the gold stamping glue to a fabric, heat and press the gold stamping film and the fabric, finally tear off the gold stamping film, and attach the gold stamping glue and an aluminum plated layer on the gold stamping film to the fabric simultaneously to emit high gloss such as gold, silver, or laser interference. However, the gold stamping process has the biggest defect that the local part of the ink-jet wet transfer printing pattern cannot be subjected to the positioning gold stamping process according to the requirement of the ink-jet wet transfer printing pattern; for example, when the ink-jet wet transfer printing flower is a flower, a golden color is thermoprinted at the flower core of the flower or the outline of the flower, so that the visual comfort of the printed fabric is greatly improved, and the added value of the printed fabric is improved.
Therefore, how to realize the local positioning gold stamping of patterns on the digital ink-jet transfer fabric, develop a positioning gold stamping process which can be suitable for small-batch and multi-variety market requirements, develop a positioning gold stamping process which can be suitable for all fiber fabrics and all water-soluble dyes, involve improving the visual comfort of the printed fabrics and improving the sale price of the printed fabrics, and have important significance for realizing product differentiation and improving market competitiveness particularly when market competition is increasingly severe at present.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a positioning gold stamping method for a digital ink-jet wet transfer printing fabric aiming at the defects of the prior art, so that the local pattern of the ink-jet wet transfer printing coloring printing can be subjected to positioning gold stamping printing, and the added value of the printed fabric is increased.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a positioning gold stamping method for a digital ink-jet wet transfer printing fabric comprises the following steps:
(1) selecting a pattern, carrying out color separation by using color separation software, and dividing the whole pattern into two parts, wherein one part is a gold stamping printing part, and the other part is a coloring printing part; the gold stamping printing part is separately subjected to color separation to form a spot color;
(2) coating a release layer and an ink absorption layer on a carrier, drying and rolling for later use;
(3) preparing digital ink-jet hot melt adhesive ink, filling the digital ink-jet hot melt adhesive ink into at least one ink channel in a digital ink-jet printing machine, filling digital ink-jet dye ink into the other channels, mounting the carrier with the release layer and the ink absorption layer on the surface in the step (2) on a digital ink-jet printer, controlling the coloring printing part and the gold stamping printing part through a computer, accurately printing the digital ink-jet dye ink and the digital ink-jet hot melt adhesive ink on the carrier with the release layer and the ink absorption layer on the surface in the step (2) in a nesting manner by using the ink-jet printer, and drying to obtain a wet transfer carrier containing the coloring dye and the hot melt adhesive;
(4) wetting the fabric to be printed by using a wetting solution containing a chemical auxiliary agent required by dyeing of a corresponding dye, attaching the wet transfer carrier containing the coloring dye and the hot melt adhesive in the step (3) to the wetted fabric, simultaneously penetrating the wet transfer carrier between a metal roller and a pressing roller of a heat transfer machine, adjusting the heating temperature of the metal roller and the pressure between the metal roller and the pressing roller, starting the heat transfer machine, dissolving the dye on the wet transfer carrier by water carried on the fabric under the action of the temperature and the pressure of the metal roller and the pressing roller, heating and melting the hot melt adhesive to be adhered to the surface of the fabric, removing the transfer carrier, transferring the dye and the hot melt adhesive on the wet transfer carrier to the fabric, drying, carrying out steaming and washing procedures, and finally obtaining the printed fabric with the positioning hot melt adhesive;
or (3) attaching the wet transfer carrier containing the hot melt adhesive and the wet fabric, putting the wet transfer carrier and the wet fabric into a flat plate pressing machine, enabling the wet transfer carrier to be tightly attached to a heating plate, heating and pressurizing, dissolving the dye on the wet transfer carrier by the water on the fabric under the action of temperature and pressure, heating and melting the hot melt adhesive, adhering the hot melt adhesive to the surface of the fabric, removing the transfer carrier, transferring the dye and the hot melt adhesive on the wet transfer carrier onto the fabric, drying, performing steaming and washing processes, and finally obtaining the printed fabric with the positioned hot melt adhesive;
(5) and (4) attaching the printed fabric with the positioning hot melt adhesive obtained in the step (4) to a gold stamping film, entering a heat transfer machine for pressing, melting the hot melt adhesive under the action of pressure and temperature, adhering a bright layer on the gold stamping film, stripping the bright layer along with the separation of the fabric from the gold stamping film, and adhering the bright layer to the fabric to obtain the positioning gold stamping printed fabric.
Wherein, in the step (2), the carrier is a PET film, an aluminum foil or paper.
When the carrier is gold stamping foil, the positioning gold stamping method of the digital ink-jet wet transfer printing fabric can also adopt the following steps:
(1) selecting a pattern, carrying out color separation by using color separation software, and dividing the whole pattern into two parts, wherein one part is a gold stamping printing part, and the other part is a coloring printing part; the gold stamping printing part is separately subjected to color separation to form a spot color;
(2) coating an ink absorbing layer on the gold foil, drying and rolling for later use;
(3) preparing digital ink-jet hot melt adhesive ink, filling the digital ink-jet hot melt adhesive ink into at least one ink channel in a digital ink-jet printing machine, filling digital ink-jet dye ink into the other channels, mounting the gold stamping foil with the ink absorption layer on the surface in the step (2) on a digital ink-jet printer, controlling a coloring printing part and the gold stamping printing part through a computer, respectively printing the digital ink-jet dye ink and the digital ink-jet hot melt adhesive ink on the gold stamping foil with the ink absorption layer on the surface in the step (2) in a precise registration manner by using the ink-jet printer, and drying to obtain wet transfer gold stamping foil containing coloring dye and hot melt adhesive;
(4) wetting the fabric to be printed with a wetting solution containing a chemical auxiliary agent required by dyeing of a corresponding dye, attaching the wet transfer gold foil containing the coloring dye and the hot melt adhesive in the step (3) to the wetted fabric, passing through a space between a metal roller and a pressure roller of a heat transfer machine, adjusting the heating temperature of the metal roller and the pressure between the metal roller and the pressure roller, starting the heat transfer machine, dissolving the dye on the wet transfer gold foil with moisture on the fabric under the action of the temperature and the pressure of the metal roller and the pressure roller, heating and melting the hot melt adhesive to be adhered to the surface of the fabric, removing the gold foil, transferring the dye and the hot melt adhesive on the wet transfer gold foil to the fabric, drying, steaming, washing, and finally obtaining the printed fabric subjected to positioning gold stamping;
or (3) attaching the wet transfer gold foil containing the hot melt adhesive in the step (3) to the wet fabric, putting the wet transfer gold foil into a flat plate pressing machine, enabling the wet transfer gold foil to be tightly attached to a heating plate, heating and pressurizing, dissolving the dye on the wet transfer gold foil by the moisture on the fabric under the action of temperature and pressure, heating and melting the hot melt adhesive, adhering the hot melt adhesive to the surface of the fabric, removing the gold foil, transferring the dye on the wet transfer gold foil and the hot melt adhesive onto the fabric, drying, steaming, washing, and finally obtaining the printed fabric with positioned gold stamping.
Specifically, when the carrier is paper, a release layer needs to be coated first, and then an ink absorption layer needs to be coated; when the carrier is a PET film, because the PET film is a polar film, and the surface of the PET film has polar groups, a release layer needs to be coated first, and then an ink absorption layer needs to be coated, certainly, there are special cases to the PET film, and after a few solutions of release agent and ink absorbent are mixed and coated on the PET film for one time and dried, the PET film also has good release effect and ink absorption effect, for example, polyvinyl butyral resin dissolved in organic solvent as release agent and hydroxypropyl cellulose dissolved in the same organic solvent as ink absorbent are dissolved in the PET film, and after mixing, the PET film is coated on the PET film for one time, the PET film has good release effect and ink absorption effect; when the carrier is an aluminum foil, the aluminum foil is a nonpolar film, and most of resin can be normally separated when being coated on the surface of the aluminum foil, so that a separation layer and an ink absorption layer can be mixed and coated or coated in sequence, or coating resin which can be separated and can absorb ink on the aluminum foil can be directly selected and coated at one time.
When the carrier is the gold stamping foil, the bright layer on the surface of the gold stamping foil can be peeled off, so that the release layer is not coated when the gold stamping foil is used as the carrier, and the ink absorbing layer is directly coated. The hot stamping foil is a hot stamping material prepared by coating and vacuum evaporation coating a layer of metal foil on a polyester film, is golden and silver, and gradually develops various colored metal light and laser interference patterns and designs and colors; the invention relates to a gold foil stamping and a plating metal layer or a coating layer of a roll mark, which can be stamped on the surface of the gold foil stamping and the plating metal layer or the coating layer of the roll mark.
There are three different types of release layers: one is that the release resin is combined with the plastic film, the release resin is nonpolar, and the release resin and the water absorption layer are easy to release, namely the release resin is attached to the surface of the plastic film during peeling, for example, an organic silicon release agent is the release agent; the second is that the adhesive force between the resin and the plastic film is low, and the adhesive force between the resin and the water absorption layer is strong, when the resin is transferred and peeled, the release layer is peeled from the plastic film, and the resin and the water absorption layer are transferred and printed on the fabric at the same time, for example, a perchloroethylene release agent belongs to the category; the third one is mainly used for nonpolar aluminum foil, because the aluminum foil is a nonpolar film and a lot of resin is coated on the surface of the aluminum foil and can be peeled off, a lot of resin can be used as a release layer and an ink absorption layer and coated on the surface of the aluminum foil simultaneously, or a small amount of release agent is mixed in the ink absorption layer in order to increase the peeling effect.
In the step (2), the ink absorption layer is a film formed by drying a viscous slurry obtained by dissolving a water-soluble high molecular substance in water; the water-soluble high molecular substance is various, and any substance that can be used as a thickener in a printing process can be used in the present invention, and includes natural substances such as gum arabic, sodium alginate, and the like; starch hydrolysates, such as yellow dextrin, white dextrin, printing glues, and the like; starches or cellulose ethers such as sodium carboxymethyl starch, hydroxypropyl starch, and sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, and the like; synthetic materials such as acrylic thickeners and the like; etherified seed gums, such as etherified guar gum and the like.
In the step (3), the digital ink-jet hot melt adhesive ink has two manufacturing methods: one is that the superfine hot melt powder sold in the market, together with water and a dispersant, are put into a high-speed grinder to be ground at low temperature until the fineness of the hot melt powder is nano-scale, and then a proper amount of deionized water and a humectant are added to be subjected to multistage fine filtration to form the digital printing hot melt adhesive ink, wherein the hot melt powder is various, and the common hot melt powder comprises polyurethane hot melt powder, polyamide hot melt powder, polyester hot melt powder, EVA hot melt powder and the like; the other aqueous synthetic polymer resin emulsion with thermoplasticity is directly added with deionized water and a humectant and becomes the digital ink-jet hot melt adhesive ink through multistage fine filtration, wherein the aqueous synthetic polymer resin emulsion has various types, and commonly comprises aqueous polyurethane emulsion, aqueous acrylic emulsion, aqueous EVA emulsion, aqueous epoxy resin emulsion and the like. The hot melt adhesive ink has the characteristic of water solubility, and after the hot melt adhesive ink is printed on the surface of a carrier, water is evaporated, so that a hot melt adhesive film layer is formed on the surface of the carrier, and the hot melt adhesive film layer is heated and melted in the later hot pressing process and is adhered to the surface of a fabric.
In the step (3), when the inkjet printing sleeve is used for printing the coloring dye, commercially available reactive dye inkjet ink, acid dye inkjet ink, disperse dye inkjet ink and cationic dye inkjet ink can be purchased.
In the step (4), the wetting liquid for wetting the fabric consists of water, a thickening agent, a PH regulator and a water absorbent; the thickening agent has various varieties, and all high molecular substances which can be used for printing production, have certain viscosity in an aqueous solution and do not react with printing dyes chemically or physically can be used as the thickening agent of the invention, and sodium carboxymethylcellulose, sodium alginate, etherified guar gum, etherified starch and the like are commonly used; the pH regulators are divided into two types, namely an acid releasing agent and an alkali releasing agent, and when the fabric is made of cellulose fibers and silk fibers and the coloring printing dye is an active dye, the alkali releasing agent is added into a wetting liquid; when the fabric is made of nylon and wool and the coloring printing dye is an active dye or an acid dye, adding an acid releasing agent into the wetting liquid; when the fabric is acrylic fibers and the coloring printing dye is a cationic dye, adding an acid releasing agent into the wetting liquid; various water absorbents can be used, and all substances capable of absorbing a large amount of water in high-temperature steam can be used as the water absorbent of the invention, and common substances are urea, glycerol, diethylene glycol and the like; since the content of thickeners, pH adjusting agents, water absorbents in the wetting fluid is well known to those skilled in the art, the present invention will not be repeated here.
In the step (4), the heat transfer machine consists of a heatable metal roller, a pressurizing rubber roller, a transmission device and a pressurizing device; the diameter of the metal roller and the pressure roller is 150 mm-600 mm, the pressure roller is a rubber roller with a metal inner core and a rubber outer coating, and the thickness of the rubber is generally 10 mm-40 mm.
The two ends of the central shaft of the pressure roller are connected with a pressure device through bearings, the pressure device is a sliding block connected with an oil cylinder or an air cylinder, and the sliding block can slide up and down in the sliding groove track under the action of oil pressure or air pressure, so that the pressure roller is close to the metal roller to pressurize or is far away from the metal roller to remove pressure. Two ends of the central shaft of the metal roller are connected to the frame of the thermal transfer printer through bearings, and one end of the central shaft of the metal roller is connected with a transmission device.
Wherein, the metal roller adopts one of the following three structures to realize heating:
(1) the metal roller is internally provided with an electric heating pipe which is electrically heated;
(2) the metal roller is internally provided with a heat conduction oil pipeline, the heating pipeline is communicated with an external heat storage oil device, and hot oil is circularly introduced for heating;
(3) and a steam pipeline is arranged in the metal roller, is communicated with an external steam pipe, and is circularly introduced for heating.
The temperature of the metal roller can be adjusted from room temperature to 250 ℃ by the heating device.
When the hot stamping foil is used as a wet transfer printing carrier and is transferred by a thermal transfer printing machine during transfer printing, the hot melt adhesive transfers the bright layer adhered to the hot stamping foil to the fabric at the same time, so that the bright layer is not required to be hot stamped again finally; when other carriers are used, the hot melt adhesive is bonded with the gold stamping foil before the finished fabric product is subjected to hot stamping in a heat transfer machine, so that the bright layer on the surface of the gold stamping foil is adhered to the hot melt adhesive part on the fabric, which is also called secondary gold stamping. The brightness and fastness of the surface of the hot stamping part of the secondary hot stamping fabric are better than those of the method of directly using the hot stamping foil as the carrier, but the cost is slightly increased.
Has the advantages that:
the invention creatively realizes the positioning gold stamping process of ink-jet wet transfer printing, realizes the positioning gold stamping process of printing on natural fiber fabrics, nylon fabrics, synthetic fiber fabrics and acrylic fabrics, and also enables the reactive dye, the acid dye and the cationic dye to be applied to the fabric gold stamping process; the coloring and printing part is completed by using ink-jet printing, so that the printed fabric positioning and gold stamping process is suitable for the market demands of small batches and multiple varieties, the production cost is reduced, and the production period is shortened.
Detailed Description
The invention will be better understood from the following examples.
Example 1
(1) Selecting a geometric square flower type, and carrying out color separation by using Jinchang color separation software, wherein the whole flower type is divided into two parts, the edge of the geometric square is a gold stamping printing part, and the rest parts are coloring printing parts; the gold stamping printing part is separately subjected to color separation to form a spot color;
(2) coating an organic silicon release layer on the surface of paper, drying, coating mixed slurry of 4% sodium alginate and 2% polyacrylamide, drying, using as an ink absorption layer, and rolling for later use;
(3) taking polyamide hot-melt adhesive powder with the fineness of 0-80 microns, adding a proper amount of dispersant MF and deionized water, grinding the mixture to the fineness of 0-100 nanometers at the temperature of 5-10 ℃, adding a proper amount of diethylene glycol and deionized water, adjusting the viscosity to be 6-8 mPa & s at the temperature of 20 ℃, filtering the mixture twice by using filter membranes with the diameters of 0.8 micron and 0.45 micron respectively to form digital ink-jet hot-melt adhesive ink, filling digital ink-jet hot-melt adhesive ink into one sprayer of a digital ink-jet printing machine with 5 finishing G5 sprayers, filling 4 sprayers with CMYK 4-color digital ink-jet active dye ink into the other 4 sprayers, installing the paper with the release layer and the ink absorption layer on the surface of the step (2) on the digital ink-jet printer, controlling the coloring printing part and the gold stamping part through a computer, respectively printing the digital ink-jet active dye ink-jet ink-melt adhesive ink and the digital ink-jet hot-melt adhesive ink onto the carrier with the, hot melt adhesive ink is sprayed on the edges of the squares of the gold stamping part, and the rest parts are reactive dye ink, and are dried to obtain a heat sublimation transfer carrier containing coloring dye and hot melt adhesive;
(4) wetting the fabric to be printed with a wetting solution containing 3% of sodium bicarbonate, 10% of urea and 1.5% of sodium carboxymethylcellulose to control the moisture content of the fabric to be 80%, then attaching the wet transfer carrier containing the coloring dye and the hot melt adhesive in the step (3) to the wetted fabric, simultaneously passing through a space between a metal roller and a pressing roller of a heat transfer machine, adjusting the heating temperature of the metal roller to be 150 ℃ and the pressure between the metal roller and the pressing roller to be 15 kg/square centimeter, starting the heat transfer machine, dissolving the dye on the wet transfer carrier by the moisture on the fabric under the action of the temperature and the pressure of the metal roller and the pressing roller, heating and melting the hot melt adhesive to be adhered to the surface of the fabric, removing the transfer carrier, transferring the dye and the hot melt adhesive on the wet transfer carrier to the fabric, and drying, steaming and washing to obtain the printed fabric with the positioning hot melt adhesive;
(5) and (3) attaching the printed fabric with the positioning hot melt adhesive obtained in the step (4) to a gold stamping film, pressing the printed fabric with the positioning hot melt adhesive in a heat transfer machine, melting the hot melt adhesive under the action of the pressure of 15 kilograms per square centimeter and the temperature of 140 ℃, adhering a bright layer on the gold stamping film, stripping the bright layer along with the separation of the fabric from the gold stamping film, and adhering the bright layer to the fabric to obtain the positioned gold stamping printed fabric.
According to the national standards for textiles and decorative fabrics (GB19817-2005) and the national standard for the basic safety technical specification of the national textile products (GB18401-2003) as well as GB/T3922-2013, the color fastness to perspiration in the color fastness test of textiles, GB/T3921-2008, the color fastness to soaping in the color fastness test of textiles, GB/T8427 and 1998, the color fastness to artificial light in the textiles, and the like, the various fastness indexes of the colored printing part patterns after printing are shown in the table 1, wherein the light fastness is 8 grades, the grade 1 is the worst, and the grade 8 is the best. The rest are 5 grades, the grade 1 is the worst, the grade 5 is the best, and the following table is the same.
TABLE 1
| Sun drying | Water washing (60 ℃ C.) | Ironing (150 degree centigrade) | Water stain | Sweat stain | Dry friction | Wet friction |
| 4-5 | 4 | 3-4 | 4-5 | 4-5 | 4-5 | 4 |
The method uses a Martindale method for testing the wear resistance of the fabric as an alternative method for the gold fastness; the wear resistance fastness of the gold stamping part is measured to be 3-4 grade according to GB/T1196.1-2007 determination of the wear resistance of fabrics by Martindale method.
Example 2
(1) Selecting a leaf pattern, carrying out color separation by using photoshop color separation software, and dividing the whole pattern into two parts, wherein veins of the leaves are a gold stamping part, and the rest are a coloring part; the gold stamping printing part is separately subjected to color separation to form a spot color;
(2) coating a layer of mixed slurry of 2.5 percent sodium carboxymethylcellulose and 5 percent polyvinyl alcohol on the silver gold foil, drying the mixed slurry to be used as an ink absorption layer, and rolling the ink absorption layer for later use;
(3) taking 35% of solid content aqueous polyurethane emulsion, adding a proper amount of ethylene glycol and deionized water, adjusting the solid content to be 10% and the viscosity to be 4-5 mPa.s, filtering for multiple times by using 0.65 micron and 0.2 micron filter membranes to obtain digital ink-jet hot melt adhesive ink, using a digital ink-jet printing machine of an Epson 10-channel nozzle, wherein the digital ink-jet hot melt adhesive ink is filled in two ink channels, CMYK four-color digital ink-jet acid dye ink is filled in the other channels, installing the gold stamping foil with the ink absorption layer on the surface in the step (2) on a digital ink-jet printer, controlling the coloring printing part and the gold stamping printing part through a computer, respectively printing the digital ink-jet acid dye ink and the digital ink-jet hot melt adhesive ink on the gold stamping foil with the ink absorption layer on the surface in the step (2) by using an ink-jet printer in a precise registration manner, wherein the, the other part is acidic, and is dried to obtain the thermal sublimation transfer gold foil containing the coloring dye and the hot melt adhesive;
(4) wetting the printed fabric nylon yarn with a wetting solution containing 10% of polyvinyl alcohol, 2% of citric acid and 3% of urea, controlling the moisture content to be 120%, attaching the wet transfer gold foil containing the coloring dye and the hot melt adhesive in the step (3) to the wetted fabric, simultaneously passing through a space between a metal roller and a pressing roller of a heat transfer machine, adjusting the heating temperature of the metal roller to be 120 ℃ and the pressure between the metal roller and the pressing roller to be 20 kg/square centimeter, starting the heat transfer machine, dissolving the dye on the wet transfer gold foil with the moisture on the fabric under the action of the temperature and the pressure of the metal roller and the pressing roller, heating and melting the hot melt adhesive, adhering the hot melt adhesive to the surface of the fabric, removing the gold foil, transferring the dye and the hot melt adhesive on the wet transfer gold foil to the fabric, drying, steaming and washing, finally, obtaining a positioning gilded printed fabric;
according to the national standards for textiles and decorative fabrics (GB19817-2005) and the national standard for the basic safety technical specification of the national textile products (GB18401-2003) as well as GB/T3922-2013, the color fastness to perspiration in the color fastness test of textiles, GB/T3921-2008, the color fastness to soaping in the color fastness test of textiles, GB/T8427 and 1998, the color fastness to artificial light in the textiles, and the like, through tests, the various fastness indexes of the colored printed partial patterns after printing are shown in the table 2.
TABLE 2
| Sun drying | Water washing (60 ℃ C.) | Ironing (150 degree centigrade) | Water stain | Sweat stain | Dry friction | Wet friction |
| 3-4 | 4 | 4 | 4-5 | 4 | 4-5 | 3-4 |
The method uses a Martindale method for testing the wear resistance of the fabric as an alternative method for the gold fastness; the wear resistance fastness of the gold stamping part is measured to be 4 grade according to GB/T1196.1-2007 determination of the wear resistance of fabrics by Martindale method.
Example 3
(1) Selecting a flower type, carrying out color separation by using chameleon color separation software, dividing the whole flower type into two parts, wherein a flower core of the flower is a gold stamping printing part, and the rest is a coloring printing part; the gold stamping printing part is separately subjected to color separation to form a spot color;
(2) coating an ethanol solution of 2% hydroxypropyl cellulose on the aluminum foil, drying and rolling for later use;
(3) taking polyester hot melt adhesive powder with the fineness of 0-80 microns, adding a proper amount of dispersant sodium lignosulfonate and deionized water, grinding to the fineness of 0-80 nanometers at the temperature of 3-7 ℃, adding a proper amount of ethylene glycol and methyl pyrrolidone, adding deionized water, adjusting the viscosity to be 9-12 mPa.s at 20 ℃, filtering twice by using filter membranes with the viscosity of 0.8 micron and 0.45 micron respectively to obtain digital ink-jet hot melt adhesive ink, in a digital ink-jet printing machine with 6 starlight 1024 nozzles, filling digital ink-jet hot melt adhesive ink into two nozzles, filling CMYK four-color active dye ink into the other nozzles, installing the carrier with the ink absorption layer on the surface in the step (2) on a digital ink-jet printer, controlling the coloring printing part and the gold stamping printing part through a computer, respectively printing the digital active dye ink and the digital ink-jet hot melt adhesive ink on the carrier with the ink absorption layer on the surface in the step (2) in a precise registration mode by using, drying to obtain a thermal sublimation transfer carrier containing the coloring dye and the hot melt adhesive;
(4) wetting the printed fabric cashmere scarf by using a wetting solution containing 20% of urea, 4% of ammonium sulfate and 3% of sodium alginate, controlling the moisture content to be 150%, then attaching the wet transfer carrier containing the hot melt adhesive in the step (3) to the wetted fabric, putting the wet transfer carrier into a flat-plate pressing machine, enabling the wet transfer carrier to be tightly attached to a heating plate, heating the heating plate to 130 ℃, pressurizing the heating plate to 10 kilograms per square centimeter, dissolving the dye on the wet transfer carrier by the moisture on the fabric under the action of temperature and pressure, heating and melting the hot melt adhesive, adhering the hot melt adhesive to the surface of the fabric, removing the transfer carrier, transferring the dye and the hot melt adhesive on the wet transfer carrier to the fabric, drying, steaming, washing, and finally obtaining the printed scarf with the positioning hot melt adhesive;
(5) and (3) adhering the printed fabric with the positioning hot melt adhesive obtained in the step (4) to a gold stamping film, pressing the printed fabric with the positioning hot melt adhesive in a heat transfer machine, melting the hot melt adhesive under the action of the pressure of 20 kilograms per square centimeter and the temperature of 135 ℃, adhering the bright layer on the gold stamping film, stripping the bright layer along with the separation of the fabric from the gold stamping film, and adhering the bright layer to the fabric to obtain the printing cashmere scarf with the positioning gold stamping.
According to the national standards for textiles and decorative fabrics (GB19817-2005) and the national standard for the basic safety technical specification of the national textile products (GB18401-2003) as well as GB/T3922-2013, the color fastness to perspiration in the color fastness test of textiles, GB/T3921-2008, the color fastness to soaping in the color fastness test of textiles, GB/T8427 and 1998, the color fastness to artificial light in the textiles, and the like, through tests, the various fastness indexes of the colored printed partial patterns after printing are shown in the table 3.
TABLE 3
| Sun drying | Water washing (60 ℃ C.) | Ironing (150 degree centigrade) | Water stain | Sweat stain | Dry friction | Wet friction |
| 5 | 4 | 3 | 4 | 3 | 4-5 | 3-4 |
The method uses a Martindale method for testing the wear resistance of the fabric as an alternative method for the gold fastness; the wear resistance fastness of the gold stamping part is measured to be 4 grade according to GB/T1196.1-2007 determination of the wear resistance of fabrics by Martindale method.
The present invention provides a method and a concept for positioning and gold stamping of a digital inkjet wet transfer fabric, and a method and a way for implementing the method and the method are numerous, and the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention. All the components not specified in the present embodiment can be realized by the prior art.
Claims (9)
1. A positioning gold stamping method for a digital ink-jet wet transfer printing fabric is characterized by comprising the following steps:
(1) selecting a pattern, carrying out color separation by using color separation software, and dividing the whole pattern into two parts, wherein one part is a gold stamping printing part, and the other part is a coloring printing part; the gold stamping printing part is separately subjected to color separation to form a spot color;
(2) coating a release layer and an ink absorption layer on a carrier, drying and rolling for later use;
(3) preparing digital ink-jet hot melt adhesive ink, filling the digital ink-jet hot melt adhesive ink into at least one ink channel in a digital ink-jet printing machine, filling digital ink-jet dye ink into the other channels, mounting the carrier with the release layer and the ink absorption layer on the surface in the step (2) on a digital ink-jet printer, controlling the coloring printing part and the gold stamping printing part through a computer, accurately printing the digital ink-jet dye ink and the digital ink-jet hot melt adhesive ink on the carrier with the release layer and the ink absorption layer on the surface in the step (2) in a nesting manner by using the ink-jet printer, and drying to obtain a wet transfer carrier containing the coloring dye and the hot melt adhesive;
(4) wetting the fabric to be printed by using a wetting solution containing a chemical auxiliary agent required by dyeing of a corresponding dye, attaching the wet transfer carrier containing the coloring dye and the hot melt adhesive in the step (3) to the wetted fabric, simultaneously penetrating the wet transfer carrier between a metal roller and a pressing roller of a heat transfer machine, adjusting the heating temperature of the metal roller and the pressure between the metal roller and the pressing roller, starting the heat transfer machine, dissolving the dye on the wet transfer carrier by water carried on the fabric under the action of the temperature and the pressure of the metal roller and the pressing roller, heating and melting the hot melt adhesive to be adhered to the surface of the fabric, removing the transfer carrier, transferring the dye and the hot melt adhesive on the wet transfer carrier to the fabric, drying, carrying out steaming and washing procedures, and finally obtaining the printed fabric with the positioning hot melt adhesive;
or (3) attaching the wet transfer carrier containing the hot melt adhesive and the wet fabric, putting the wet transfer carrier and the wet fabric into a flat plate pressing machine, enabling the wet transfer carrier to be tightly attached to a heating plate, heating and pressurizing, dissolving the dye on the wet transfer carrier by the water on the fabric under the action of temperature and pressure, heating and melting the hot melt adhesive, adhering the hot melt adhesive to the surface of the fabric, removing the transfer carrier, transferring the dye and the hot melt adhesive on the wet transfer carrier onto the fabric, drying, performing steaming and washing processes, and finally obtaining the printed fabric with the positioned hot melt adhesive;
(5) and (4) attaching the printed fabric with the positioning hot melt adhesive obtained in the step (4) to a gold stamping film, entering a heat transfer machine for pressing, melting the hot melt adhesive under the action of pressure and temperature, adhering a bright layer on the gold stamping film, stripping the bright layer along with the separation of the fabric from the gold stamping film, and adhering the bright layer to the fabric to obtain the positioning gold stamping printed fabric.
2. The method for positioning and bronzing the digital ink-jet wet transfer fabric according to claim 1, wherein in the step (2), the carrier is a PET film, an aluminum foil or paper.
3. A positioning gold stamping method for a digital ink-jet wet transfer printing fabric is characterized by comprising the following steps:
(1) selecting a pattern, carrying out color separation by using color separation software, and dividing the whole pattern into two parts, wherein one part is a gold stamping printing part, and the other part is a coloring printing part; the gold stamping printing part is separately subjected to color separation to form a spot color;
(2) coating an ink absorbing layer on the gold foil, drying and rolling for later use;
(3) preparing digital ink-jet hot melt adhesive ink, filling the digital ink-jet hot melt adhesive ink into at least one ink channel in a digital ink-jet printing machine, filling digital ink-jet dye ink into the other channels, mounting the gold stamping foil with the ink absorption layer on the surface in the step (2) on a digital ink-jet printer, controlling a coloring printing part and the gold stamping printing part through a computer, respectively printing the digital ink-jet dye ink and the digital ink-jet hot melt adhesive ink on the gold stamping foil with the ink absorption layer on the surface in the step (2) in a precise registration manner by using the ink-jet printer, and drying to obtain wet transfer gold stamping foil containing coloring dye and hot melt adhesive;
(4) wetting the fabric to be printed with a wetting solution containing a chemical auxiliary agent required by dyeing of a corresponding dye, attaching the wet transfer gold foil containing the coloring dye and the hot melt adhesive in the step (3) to the wetted fabric, passing through a space between a metal roller and a pressure roller of a heat transfer machine, adjusting the heating temperature of the metal roller and the pressure between the metal roller and the pressure roller, starting the heat transfer machine, dissolving the dye on the wet transfer gold foil with moisture on the fabric under the action of the temperature and the pressure of the metal roller and the pressure roller, heating and melting the hot melt adhesive to be adhered to the surface of the fabric, removing the gold foil, transferring the dye and the hot melt adhesive on the wet transfer gold foil to the fabric, drying, steaming, washing, and finally obtaining the printed fabric subjected to positioning gold stamping;
or (3) attaching the wet transfer gold foil containing the hot melt adhesive in the step (3) to the wet fabric, putting the wet transfer gold foil into a flat plate pressing machine, enabling the wet transfer gold foil to be tightly attached to a heating plate, heating and pressurizing, dissolving the dye on the wet transfer gold foil by the moisture on the fabric under the action of temperature and pressure, heating and melting the hot melt adhesive, adhering the hot melt adhesive to the surface of the fabric, removing the gold foil, transferring the dye on the wet transfer gold foil and the hot melt adhesive onto the fabric, drying, steaming, washing, and finally obtaining the printed fabric with positioned gold stamping.
4. The method for positioning and bronzing the digital ink-jet wet transfer fabric according to claim 2, wherein when the carrier is paper, the release layer is coated first, and then the ink absorption layer is coated; when the carrier is a PET film, the release layer is coated firstly, and then the ink absorption layer is coated or the release layer and the ink absorption layer are coated simultaneously after mixing; when the carrier is aluminum foil, the release layer and the ink absorption layer are coated in a mixed manner or coated in sequence.
5. The positioning and gold stamping method for the digital ink-jet wet transfer fabric according to claim 1 or 3, wherein in the step (2), the ink absorption layer is formed by drying a thick slurry obtained by dissolving a water-soluble high molecular substance in water to form a film, and the water-soluble high molecular substance comprises any one or a mixture of more than two of dragon glue, Arabic gum, sodium alginate, yellow dextrin, white dextrin, printing and dyeing glue, sodium carboxymethyl starch, hydroxypropyl starch, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, an acrylic acid thickener and etherified guar gum.
6. The method for positioning and bronzing the digital ink-jet wet transfer fabric according to claim 1 or 3, wherein in the step (3), the digital ink-jet hot melt adhesive ink is manufactured by one of the following two methods:
one is that the superfine hot melting powder sold in the market, water and a dispersant are put into a high-speed grinder to be ground at low temperature until the fineness of the hot melting powder is nano-scale, and a proper amount of deionized water and a humectant are added to form the digital printing hot melting adhesive ink; wherein the hot melt powder is polyurethane hot melt powder, polyamide hot melt powder, polyester hot melt powder or EVA hot melt powder;
the other is that the thermoplastic aqueous synthetic polymer resin emulsion is directly added with deionized water and humectant to form the digital ink-jet hot melt adhesive ink; wherein the aqueous synthetic polymer resin emulsion is aqueous polyurethane emulsion, aqueous polyacrylic acid emulsion, aqueous EVA emulsion or aqueous epoxy resin emulsion.
7. The method for positioning and bronzing the digital ink-jet wet transfer fabric according to claim 1 or 3, wherein in the step (3), the digital ink-jet dye ink is a commercially available reactive dye ink-jet ink, an acid dye ink-jet ink, a disperse dye ink-jet ink or a cationic dye ink-jet ink.
8. The method for positioning and bronzing the digital ink-jet wet transfer fabric according to claim 1 or 3, wherein in the step (4), the wetting liquid for wetting the fabric consists of water, a thickening agent, a PH regulator and a water absorbent;
wherein the thickening agent is sodium carboxymethylcellulose, sodium alginate, etherified guar gum or etherified starch;
the pH regulator is an acid releasing agent or an alkali releasing agent;
the water absorbent is urea, glycerol or diethylene glycol.
9. The method for positioning and gold stamping of the digital ink-jet wet transfer fabric according to claim 1 or 3, wherein in the step (4), the heat transfer machine is composed of a heatable metal roller, a pressurizing rubber roller, a transmission device and a pressurizing device; the diameters of the metal roller and the pressure roller are 150 mm-600 mm, the pressure roller is a rubber roller with a metal inner core and rubber outer coating, and the thickness of the rubber is generally 10 mm-40 mm;
the two ends of the central shaft of the pressure roller are connected with a pressurizing device through bearings, the pressurizing device is a sliding block connected with an oil cylinder or an air cylinder, and the sliding block can slide up and down in the sliding groove track under the action of oil pressure or air pressure, so that the pressure roller is close to the metal roller to pressurize or is far away from the metal roller to remove pressure; two ends of the central shaft of the metal roller are connected to the frame of the thermal transfer printer through bearings, and one end of the central shaft of the metal roller is connected with a transmission device;
wherein, a heating device is arranged in the metal roller, and the heating device is an electric heating pipe, a heat conduction oil pipeline or a steam pipeline; the temperature of the metal roller is controlled between room temperature and 250 ℃ by a heating device.
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