阅读说明：本技术 一种湿法转印织物的定位烫金方法 (Positioning gold stamping method for wet transfer printing fabrics ) 是由 刘静 李琦 林贤同 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种湿法转印织物的定位烫金方法,先在印刷载体印刷面涂布离型层和墨水吸收层,然后将热熔胶浆料涂布在烫金印花部分,并在着色印花部分套位打印花型,得到含有热熔胶的湿法转移载体,与润湿的待印花织物贴合热压,得到带热熔胶的染料印花面料,最后与烫金膜贴合热压得到定位烫金的印花织物。本发明实现了湿法转印的定位烫金,提升印花织物的视觉舒适度,提高印花织物的销售价格,特别是在当下市场竞争日益激烈的当下,做到产品差异化,提高产品的市场竞争力。(The invention discloses a positioning gold stamping method of wet transfer printing fabrics, which comprises the steps of coating a release layer and an ink absorbing layer on the printing surface of a printing carrier, coating hot melt adhesive slurry on a gold stamping printing part, nesting and printing patterns on a coloring printing part to obtain a wet transfer carrier containing hot melt adhesive, attaching the wet transfer carrier to a wet fabric to be printed for hot pressing to obtain a dye printing fabric with the hot melt adhesive, and finally attaching the dye printing fabric to a gold stamping film for hot pressing to obtain the printing fabric with positioning gold stamping.)

1, kinds of wet process transfer printing fabric's location gilding method, characterized by, including the following step:

(1) selecting a pattern, carrying out color separation by using color separation software, dividing the whole pattern into two parts, namely a part which is a gold stamping printing part and a part which is a coloring printing part, separately carrying out color separation on the gold stamping printing part into spot colors, and making the spot colors into a gravure plate for gold stamping or a silk screen plate or a circular screen plate;

(2) respectively coating a release layer and an ink absorption layer on the printing surface of the printing carrier, or simultaneously coating the release layer and the ink absorption layer, drying, then printing the hot melt adhesive slurry on the surface of the printing carrier coated with the release layer and the ink absorption layer by a gravure printing plate, a silk-screen printing plate or a rotary screen printing plate through the hot stamping of the step (1), and drying to obtain the strippable carrier with the hot melt adhesive pattern on the surface;

(3) the color printing part in the step (1) is subjected to color separation again to prepare a gravure plate, a silk screen plate or a round screen plate for color printing, and dye slurry for color printing is accurately overprinted on the peelable carrier with the hot melt adhesive flower on the surface in the step (2) through the gravure plate, the silk screen plate or the round screen plate for color printing;

or (3) installing the strippable carrier with the hot melt adhesive pattern on the surface in the step (2) on an ink-jet printer, printing the dye of the coloring and printing part on the strippable carrier with the hot melt adhesive pattern on the surface in the step (2) through the accurate nesting of the ink-jet printer, and drying to obtain a wet transfer carrier containing the hot melt adhesive;

(4) wetting a fabric to be printed by using wetting liquid containing chemical auxiliaries required by dyeing of corresponding dyes, then attaching the wet transfer carrier containing the hot melt adhesive in the step (3) to the wetted fabric, simultaneously penetrating the wet transfer carrier between a metal roller and a rubber roller of a heat transfer machine, adjusting the heating temperature of the metal roller and the pressure between the metal roller and the rubber roller, starting the heat transfer machine, dissolving the dyes on the wet transfer carrier by moisture carried on the fabric under the action of the temperature and the pressure of the metal roller and the rubber roller, heating and melting the hot melt adhesive, adhering the hot melt adhesive to the surface of the fabric, removing the transfer carrier, transferring the dyes and the hot melt adhesive on the wet transfer carrier to the fabric, drying, entering the steaming and washing processes, and finally obtaining the dye printed fabric with the 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 moisture on the fabric under the action of temperature and pressure, heating and melting the hot melt adhesive, enabling the hot melt adhesive to be adhered to the surface of the fabric, removing the transfer carrier, completely transferring the dye and the hot melt adhesive on the wet transfer carrier to the fabric, drying, performing steaming and washing processes, and finally obtaining the dye printed fabric with the hot melt adhesive;

(5) and (3) attaching the dye printing fabric with the 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 positioned gold stamping printing fabric.

2. The positioning and gold stamping method of the wet transfer fabric as claimed in claim 1, wherein in the step (1) and the step (3), the same pattern of the gravure plate, silk screen plate or halftone plate for gold stamping corresponds to the same pattern of the gravure plate, silk screen plate or halftone plate for color printing in size.

3. The positioned gold stamping method of the wet transfer fabric according to claim 1, wherein in the step (2), the printing carrier is paper or a plastic film; the plastic film is a PET film or a BOPP film.

4. The positioning gold stamping method of the wet transfer printing fabric as claimed in claim 3, wherein when the plastic film is a PET film, a release layer is coated on the printing surface of the plastic film, and then an ink absorption layer is coated; when the plastic film is a BOPP film, the release layer and the ink absorption layer are coated sequentially or simultaneously.

5. The positioned gold stamping method of the wet transfer printing fabric as claimed in claim 1, wherein in the step (2), the hot melt adhesive slurry is polyurethane hot melt adhesive, polyester hot melt adhesive, polyamide hot melt adhesive, or hot melt powder slurry made of PA hot melt powder, PES hot melt powder, EVA hot melt powder.

6. The positioned gold stamping method of the wet transfer fabric as claimed in claim 1, wherein in the step (3), when the gold stamping hot melt adhesive and the color printing dye paste are printed by gravure printing, silk screen printing or rotary screen printing, the gold stamping hot melt adhesive is printed first, and then the color printing dye is overprinted; or printing a coloring printing dye and overprinting a hot-melt adhesive;

when the ink-jet printing sleeve is used for printing the coloring printing dye, firstly, a gravure plate, a silk screen or a rotary screen is used for printing hot melt adhesive for gold stamping, and then the coloring printing dye is accurately printed on the ink-jet printing machine in a sleeve position; or firstly printing a coloring printing dye on an ink-jet printing machine, and then precisely overprinting and bronzing the hot melt adhesive by using a gravure plate or a silk screen or a rotary screen.

7. The positioned bronzing method of the wet transfer fabric according to claim 6, wherein in the step (3), when the dye printing is used for gravure printing or silk screen printing or cylinder screen printing, the water-based printing ink or oil-based printing ink can be used;

wherein the water-based printing ink is printing slurry consisting of water, water-soluble dye and printing paste; the water-soluble dye is direct dye, reactive dye, vat dye, acid dye or disperse dye; the printing paste is sodium carboxymethylcellulose, sodium alginate and etherified guar gum;

the oily printing ink consists of an organic solvent, an organic solvent soluble dye and a water-oil soluble printing paste; the organic solvent is methanol, ethanol, ethylene glycol ethyl ether, propylene glycol methyl ether, dimethylformamide or dimethyl sulfoxide; the organic solvent soluble dye is a reactive dye, an acid dye or a cationic dye; the water-oil soluble printing paste is pullulan, hydroxypropyl cellulose or polyvinylpyrrolidone.

8. The localized bronzing method of a wet transfer fabric according to claim 6, wherein in the step (3), when the inkjet printing nest is used to print the coloring dye, the coloring dye is a reactive dye inkjet ink, an acid dye inkjet ink, a disperse dye inkjet ink or a cationic dye inkjet ink.

9. The positioned gold stamping method of the wet transfer fabric according to claim 1, wherein in the step (4), the wetting liquid for wetting the fabric is composed of water, a thickening agent, a pH regulator and a water absorbent; 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.

Technical Field

The invention belongs to the field of textile printing and dyeing, and particularly relates to a positioning gold stamping method for wet transfer printing fabrics.

Background

The textile printing comprises dye printing or pigment printing, wherein dye printing or pigment printing is to apply dye or pigment capable of dyeing textile fabric on a local part of the surface of the textile fabric side by a physical or chemical method, and then deposit the dye or pigment through physical or chemical reaction, and have fixed binding fastness with textile fabric fibers to form the whole process of local dyeing on the textile, and the whole process usually uses four colors of red, yellow, blue and black as basic colors to blend various colors.

The special printing is characterized in that special materials are applied to the surface of the fabric in a screen printing mode, a roll coating mode, a hand drawing mode, a transferring mode, an electrostatic attraction mode, even a 3D printing mode and the like, and finally three-dimensional special effects of gold stamping, high solid, cracking, gold flashing, burnt-out, flocking and the like are formed, so that the added value of the fabric is greatly increased.

The wet transfer printing is latest fabric environment-friendly printing processes, which comprises the steps of firstly applying required pattern dye on a carrier by a water-soluble dye capable of dyeing fabrics in a gravure printing or ink-jet printing mode to form a pattern, then wetting fabric fabrics, attaching the carrier with the pattern and the wetted fabric fabrics, pressurizing, dissolving the water-soluble dye on the carrier by the water carried on the fabric fabrics under high pressure, and completing the transfer of the dye from the carrier to the fabrics.

The hot stamping printing in the special printing is , namely, gold stamping glue is printed on a gold stamping film through an intaglio printing process, the gold stamping film printed with the gold stamping glue is attached to a fabric, heating and pressurizing are carried out, the gold stamping glue and the fabric are adhered to , finally, the gold stamping film is torn off, the gold stamping glue and an aluminum plating layer on the gold stamping film are simultaneously attached to the fabric, and high gloss such as gold, silver or laser interference is emitted, however, the gold stamping process has maximum defects, and the local part of a flower type cannot be subjected to a positioning gold stamping process according to the needs of the flower type, for example, when the flower type is a flower, gold is hot stamped on the flower core of the flower, or the outline of the flower is hot stamped with gold, so that the visual comfort level 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 wet transfer printing fabric involves improving the visual comfort of the printed fabric and improving the sale price of the printed fabric, and especially, the method has important significance in realizing product differentiation and improving market competitiveness when market competition is increasingly fierce.

Disclosure of Invention

The technical problem to be solved by the invention is to provide kinds of positioning gold stamping methods for wet transfer printing fabrics aiming at the defects of the prior art, so that the positioning gold stamping printing can be carried out on the local pattern of the wet transfer printing coloring printing to increase the added value of the printed fabrics.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

method for positioning and gilding wet transfer fabric, comprising the following steps:

(1) selecting a pattern, carrying out color separation by using color separation software, dividing the whole pattern into two parts, namely a part which is a gold stamping printing part and a part which is a coloring printing part, separately carrying out color separation on the gold stamping printing part into spot colors, and making the spot colors into a gravure plate for gold stamping or a silk screen plate or a circular screen plate;

(2) respectively coating a release layer and an ink absorption layer on the printing surface of the printing carrier, or simultaneously coating the release layer and the ink absorption layer, drying, then printing the hot melt adhesive slurry on the surface of the printing carrier coated with the release layer and the ink absorption layer by a gravure printing plate, a silk-screen printing plate or a rotary screen printing plate through the hot stamping of the step (1), and drying to obtain the strippable carrier with the hot melt adhesive pattern on the surface;

(3) the color printing part in the step (1) is subjected to color separation again to prepare a gravure plate, a silk screen plate or a round screen plate for color printing, and dye slurry for color printing is accurately overprinted on the peelable carrier with the hot melt adhesive flower on the surface in the step (2) through the gravure plate, the silk screen plate or the round screen plate for color printing;

or (3) installing the strippable carrier with the hot melt adhesive pattern on the surface in the step (2) on an ink-jet printer, printing the dye of the coloring and printing part on the strippable carrier with the hot melt adhesive pattern on the surface in the step (2) through the accurate nesting of the ink-jet printer, and drying to obtain a wet transfer carrier containing the hot melt adhesive;

(4) wetting a fabric to be printed by using wetting liquid containing chemical auxiliaries required by dyeing of corresponding dyes, then attaching the wet transfer carrier containing the hot melt adhesive in the step (3) to the wetted fabric, simultaneously penetrating the wet transfer carrier between a metal roller and a rubber roller of a heat transfer machine, adjusting the heating temperature of the metal roller and the pressure between the metal roller and the rubber roller, starting the heat transfer machine, dissolving the dyes on the wet transfer carrier by moisture carried on the fabric under the action of the temperature and the pressure of the metal roller and the rubber roller, heating and melting the hot melt adhesive, adhering the hot melt adhesive to the surface of the fabric, removing the transfer carrier, transferring the dyes and the hot melt adhesive on the wet transfer carrier to the fabric, drying, entering the steaming and washing processes, and finally obtaining the dye printed fabric with the 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 moisture on the fabric under the action of temperature and pressure, heating and melting the hot melt adhesive, enabling the hot melt adhesive to be adhered to the surface of the fabric, removing the transfer carrier, completely transferring the dye and the hot melt adhesive on the wet transfer carrier to the fabric, drying, performing steaming and washing processes, and finally obtaining the dye printed fabric with the hot melt adhesive;

(5) and (3) attaching the dye printing fabric with the 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 positioned gold stamping printing fabric.

Specifically, in the step (1) and the step (3), the sizes of the gravure plate, the silk screen plate or the round screen plate for gold stamping and the size of the gravure plate, the silk screen plate or the round screen plate for coloring and printing are respectively corresponding to the sizes of the gravure plate, the silk screen plate or the round screen plate for coloring and printing; in recent years, due to the development of computer technology, most of the gravure printing plates, the silk-screen printing plates or the rotary screen printing plates adopt a computer-controlled laser printing method, so that energy is saved, emission is reduced, plate making errors are reduced, overprinting precision is improved, and accurate overprinting becomes very simple.

Specifically, in the step (2), the printing carrier is paper or a plastic film, and the plastic film is a PET film or a BOPP film; when the transfer film is manufactured by ink-jet printing, because the drying temperature is high, it is recommended to use a PET film as the transfer film base film; when the transfer film is manufactured using gravure printing, screen printing, or rotary screen printing, both films can be used as base films of the transfer film.

Preferably, when the carrier is paper, a release layer must be coated firstly, then an ink absorption layer is coated, when the plastic film is a PET film, because the PET film is a polar film and the surface of the PET film is provided with polar groups, the release layer needs to be coated firstly, then the ink absorption layer needs to be coated, of course, in a special case of the PET film, times of solution mixing of a few release agents and an ink absorbent are coated on the PET film and dried, and the good release effect and the good ink absorption effect are also achieved, for example, after times of solution mixing of polyvinyl butyral resin dissolved in an organic solvent and hydroxypropyl cellulose dissolved in the ink absorbent are coated on the PET film, good release effect and ink absorption effect are achieved, when the plastic film is a BOPP film, the BOPP film is a non-polar film, most of the resin coated on the surface of the BOPP film can be normally released, so that a release layer and the ink absorption layer can be coated in a mixed mode or coated in sequence, or the release layer and the ink absorption layer can be directly selected on the BOPP film, and times of the release resin can be directly coated on the BOPP film.

The release layer is of three different types, release agents are combined with the plastic film, the release agents are nonpolar and are easy to release from the water absorbing layer, namely the release agents are attached to the surface of the plastic film during stripping, for example, the organic silicon release agents are release agents, the release agents are low in adhesive force with the plastic film and strong in adhesive force with the water absorbing layer, the release layers are stripped from the plastic film during transfer stripping and are simultaneously transferred to the fabric together with the water absorbing layer, for example, perchloroethylene is taken as the release agents and belongs to the category, the third type is mainly used for a nonpolar BOPP film, and the BOPP film is a nonpolar film, and a great amount of resin is coated on the surface of the BOPP film and can be stripped, so that after the resin is coated on the surface of the BOPP film and dried, the BOPP film can be used as a release layer and an ink absorbing layer, or a small amount of release agents are blended in the ink absorbing.

Specifically, in the step (2), the hot melt adhesive is of various types, wherein kinds of hot melt adhesives are insoluble in water and can be changed into fluid with adhesiveness at high temperature, organic polymers which recover solid after cooling can be used as the hot melt adhesive of the invention, the hot melt adhesives are divided into two types, kinds of high polymer substances which can be dissolved in organic solvents to form pasty fluid and comprise polyurethane hot melt adhesives, polyester hot melt adhesives, polyamide hot melt adhesives and the like, the hot melt adhesives can be directly dissolved in the organic solvents to form hot melt adhesive paste and then printed on a carrier coated with a release layer and an ink absorption layer, kinds of high polymer substances which are insoluble in any organic solvents and can be ground into fine powder at low temperature comprise PA hot melt adhesives, PES hot melt adhesives, EVA hot melt adhesives and the like, the high polymer substances must be mixed with organic solvents or water and thickened into the paste containing the hot melt adhesives, then printed on the carrier coated with the release layer and the ink absorption layer, the water-based hot melt adhesives are different from the solvent-based solvent method and the hot melt adhesive-based water-based hot melt adhesive-based hot-melt adhesive-based water-based hot-melt adhesive-based hot-stamping-emulsion method, and the hot-based hot-melt adhesive-based hot-stamping adhesive emulsion are of the hot-based water-based hot-stamping adhesive emulsion which has the requirements of the high water-based hot-.

Specifically, in the step (3), when the hot melt adhesive for gold stamping printing and the dye paste for color printing are printed by gravure printing, silk screen printing or rotary screen printing, the hot melt adhesive for gold stamping can be printed firstly, and then the dye paste for color printing can be overprinted; or firstly printing a coloring printing dye and then overprinting the hot melt adhesive for gold stamping; similarly, when the ink-jet printing is used for printing the coloring printing dye, the coloring printing dye can be printed on an ink-jet printing machine, and then the hot melt adhesive for gold stamping can be precisely overprinted by a gravure plate or a silk screen or a rotary screen.

In the step (3), when the coloring printing dye is printed by gravure printing, silk screen printing or rotary screen printing, the aqueous printing ink or the oily printing ink can be used, wherein the aqueous printing ink is printing slurry consisting of water, water soluble dye and printing paste, the water soluble dye is different according to the fabric material components, for example, if the fabric material components are cotton cloth, the dye components can be direct dye, active dye and vat dye, when the fabric material components are wool or nylon, the water soluble dye and the active dye can be dispersed, when the fabric material components are terylene, (of course, the vat dye and the disperse dye are known by the skilled person to be not really soluble in water, but are dispersed in water by an anionic dispersing agent after being ground into fine powder, but are not greatly different from water in appearance), the printing paste is of various types, wherein the printing ink is commonly used by , such as carboxymethyl cellulose sodium alginate, etherified guar gum, and the like, wherein the oily printing ink is composed of organic solvent, water soluble dye and oil soluble printing paste, such as alcohol, alcohol ether, polyethylene glycol ether, polyvinyl alcohol ether, and the like, and the printing ink can be used as polyvinyl alcohol ether, and the like.

In step (3), when the inkjet printing set is used to print a 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), a wetting liquid for wetting the fabric is composed of water, a thickening agent, a pH regulator and a water absorbent, wherein the thickening agent is of various types, all high molecular substances which can be used for printing production and have constant viscosity in an aqueous solution and do not chemically or physically react with a printing dye can be used as the thickening agent of the invention, common carboxymethyl cellulose sodium, sodium alginate, etherified guar gum, etherified starch and the like, the pH regulator is divided into two types which are respectively an acid releasing agent and an alkali releasing agent, the acid releasing agent comprises ammonium sulfate, citric acid, oxalic acid, malic acid and the like, the alkali releasing agent comprises baking soda, sodium trichloroacetate, trisodium phosphate and the like, when the fabric is cellulose fiber and the coloring printing dye is a reactive dye, the common alkali releasing agent is added into the wetting liquid, when the fabric is nylon and wool, the coloring printing dye is a reactive dye or an acidic dye, the acid releasing agent is added into the wetting liquid, when the fabric is nylon and the dyeing dye is a cationic dye, the coloring dye is a positive ion water absorbent, the wetting liquid is prepared by adding the acid releasing agent into the wetting agent, the moisture releasing agent, the thickening agent is a high-absorbing substance capable of absorbing steam, and the glycerol is not known in the technology of the invention.

In the step (4), the heat transfer machine consists of a heatable metal roller, a rubber roller, a transmission device and a pressurizing device, wherein the diameters of the metal roller and the rubber roller are 150-600 mm, the inner core of the rubber roller is made of metal, the rubber roller is coated with rubber, and the thickness of the rubber is mm-40 mm.

The two ends of the central shaft of the rubber 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, the sliding block can slide up and down in a chute track under the action of oil pressure or air pressure, so that the rubber roller is close to the metal roller to pressurize or is far away from the metal roller to remove pressure, the two ends of the central shaft of the metal roller are connected on a frame of the thermal transfer printing machine through bearings, and the end of the central shaft of the metal roller is connected with a transmission device, of course, the rubber roller can also be connected with the transmission device, and the metal.

In the step (4), the metal roller is heated by which adopts the following three structures:

(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.

In the step (5), the gold stamping film is originally called as an alumite, which is hot stamping materials prepared by coating and vacuum evaporation plating layers of metal poise on a polyester film, the gold and silver hot stamping materials are used for gold and silver, and gradually develop into various colored metal light colors and laser interference patterns and printing colors, and the PET film is coated with a release layer, and then is directly rolled with various beads, transparent colors, black and various printing patterns, at the moment, is called as a cutting film and is also used for a gold stamping process.

The invention has the beneficial effects that the invention creatively realizes the positioning gold stamping of the wet transfer printing, not only realizes the transfer printing of any fiber fabric, has rich pattern layers, deep color, energy conservation and emission reduction, but also perfectly combines the gold stamping process with the wet transfer printing process , has the advantages of simple operation, high rate of certified products, good gold stamping firmness and the like, uses finished products for gold stamping in the gold stamping process, can select hot stamping films of any color or variety at any time according to market demands, greatly improves the color richness of the fabric design and color, improves the visual comfort of the printed fabric, improves the sale price of the printed fabric, and especially achieves product differentiation and improves the market competitiveness of products when the market competition is increasingly fierce.

Detailed Description

The invention will be better understood from the following examples.