阅读说明：本技术 一种喷墨湿法转印织物的定位烫金方法 (Positioning gold stamping method for ink-jet wet transfer printing fabric ) 是由 刘静 李琦 林贤同 于 2019-10-14 设计创作，主要内容包括：本发明公开了一种喷墨湿法转印织物的定位烫金方法,先在烫金箔的烫印面先涂布一层印花浆料,然后将热熔胶浆料印刷到涂布印花浆料的烫金箔的烫印面,再将染料墨水套位打印到上述表面带热熔胶花型的烫金箔上,最后与润湿的待印花织物贴合热压,得到定位烫金的湿法转移印花面料。本发明创造性的实现了喷墨湿法转印的定位烫金工艺,实现了天然纤维织物,尼龙织物,合成纤维织物,腈纶织物印花的定位烫金工艺,也使得活性染料,酸性染料,阳离子染料能够应用于面料烫金工艺；使用喷墨印花,完成着色印花部分,使得印花织物定位烫金工艺适用于小批量多品种的市场需求,降低了生产成本,缩短了生产周期。(The invention discloses a positioning gold stamping method of an ink-jet wet transfer fabric, which comprises the steps of firstly coating a layer of printing slurry on a hot stamping surface of a gold stamping foil, then printing hot melt adhesive slurry on the hot stamping surface of the gold stamping foil coated with the printing slurry, then printing dye ink on the gold stamping foil with hot melt adhesive patterns on the surface in a nesting manner, and finally attaching and hot-pressing the gold stamping foil with a wet fabric to be printed to obtain the positioning gold stamping wet transfer printing 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; 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.)

1. A positioning gold stamping method for an 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, and the spot color is made into a gravure printing plate or a silk printing plate or a circular screen printing plate for gold stamping;

(2) coating a layer of printing paste on the hot stamping surface of the hot stamping foil, drying, printing the hot melt adhesive paste on the hot stamping surface of the hot stamping foil coated with the printing paste by the gravure printing plate, the silk printing plate or the rotary screen printing plate in the step (1) through gravure printing, silk printing or rotary screen printing, and drying to obtain the hot stamping foil with the hot melt adhesive patterns on the surface;

(3) installing the hot-melt adhesive flower-shaped gold stamping foil with the surface in the step (2) on an ink-jet printer, controlling a coloring and printing part through a computer, accurately registering and printing dye ink on the hot-melt adhesive flower-shaped gold stamping foil with the surface in the step (2) by using the ink-jet printer, and drying to obtain a wet transfer hot-melt adhesive foil containing hot melt adhesive;

(4) wetting a fabric to be printed by using wetting liquid containing a chemical auxiliary agent required by dyeing of a corresponding dye, attaching the wet transfer gold foil containing 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 and the pressure between the metal roller and the pressing roller, starting the heat transfer machine, dissolving the dye on the wet transfer gold foil by water 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 with the hot stamping bright layer on the surface of the gold foil, removing a transfer foil carrier, transferring the dye on the wet transfer gold foil and the hot stamping bright layer on the surface of the hot melt adhesive onto the fabric, drying, steaming, and washing, finally, obtaining a wet transfer printing fabric for positioning gold stamping;

or (3) attaching the wet transfer film containing the hot melt adhesive and the wet fabric, putting the wet transfer film into a flat plate pressing machine, enabling the wet transfer film to be tightly attached to a heating plate, heating and pressurizing, dissolving the dye on the wet transfer film 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 take the hot stamping bright layer on the surface of the gold stamping foil to be adhered to the surface of the fabric, removing the transfer film carrier, transferring the dye on the wet transfer film and the hot melt adhesive taking the hot stamping bright layer on the surface of the gold stamping foil to the fabric, drying, steaming, washing, and finally obtaining the positioned gold stamping wet transfer printing fabric.

2. The positioning and gold stamping method for the ink-jet wet transfer fabric as claimed in claim 1, wherein in the step (1), the gravure plate or silk screen plate or round screen plate for gold stamping with the same pattern is identical to the ink-jet printing size of the color printing and can be precisely overprinted.

3. The positioning and gold stamping method for the ink-jet wet transfer fabric according to claim 1, wherein in the step (2), the printing paste is a viscous paste obtained by dissolving a water-soluble high molecular substance in water; the water-soluble high molecular substance is one or a mixture of more than two of dragon gum, Arabic gum, sodium alginate, yellow dextrin, white dextrin, printing and dyeing glue, polyacrylamide, sodium carboxymethyl starch, hydroxypropyl starch, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, an acrylic acid thickener and etherified guar gum.

4. The positioning and gold stamping method for the ink-jet wet transfer fabric according to 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, or EVA hot melt powder.

5. The method for positioning and bronzing the ink-jet wet transfer fabric according to claim 1, wherein in the step (3), the dye ink is a reactive dye ink-jet ink, an acid dye ink-jet ink, a disperse dye ink-jet ink or a cationic dye ink-jet ink.

6. The positioning and gold stamping method for the ink-jet 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; 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.

7. The method for positioning and gold stamping of the ink-jet wet transfer fabric according to claim 1, 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 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.

8. The positioning and gold stamping method for the ink-jet wet transfer fabric according to claim 7, wherein in the step (4), an electric heating pipe, a heat conduction oil pipeline or a steam pipeline is arranged in the metal roller; the temperature of the metal roller can be adjusted from room temperature to 250 ℃.

Technical Field

The invention belongs to the field of textile printing and dyeing, and particularly relates to a positioning gold stamping method for an 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 ink-jet wet transfer printing process is one new kind of fabric environment protecting printing process, and includes the first ink-jet printing of water soluble dye capable of dyeing fabric to form pattern on the carrier, the subsequent wetting of fabric, adhering the carrier with the pattern to the wetted fabric, pressurizing, dissolving the water soluble dye in the carrier with water to complete the transfer of the dye from the carrier to the fabric, and this process is called ink-jet wet transfer printing. The method has the advantages of energy conservation and emission reduction, vivid pattern, one meter printing, particular suitability for small-batch production of various products, simple and convenient production and the like. From the above description, it is known that ink jet wet transfer belongs to color printing.

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.

Chinese patent 201410464495.3 discloses a positioning gold stamping method for textile fabric, which is to print disperse dye gravure printing ink and water-based hot melt adhesive on the surface of a gold stamping film at one time through a gravure by using a multicolor gravure printing machine, attach the printed gold stamping film and polyester fabric, place the gold stamping film and the polyester fabric in a thermal sublimation transfer printing machine, sublimate the disperse dye at 200 ℃, simultaneously apply a gold stamping process, and combine the two processes together at one time. However, the process has several disadvantages, one is that the dye of the coloring printing part must use the gravure printing because of the high cost and high pollution of the gravure plate making, and the process is not suitable for the market requirement of small batch and multiple varieties; in addition, the process is only suitable for polyester fabrics which can accept high-temperature sublimation disperse dyes, and is not suitable for natural fibers such as cotton, hemp, real silk and wool, artificial fibers such as viscose, tencel, cuprammonium and modal, nylon and acrylic fibers, and water-soluble reactive dyes, acid dyes and cationic dyes.

Therefore, how to realize the local positioning gold stamping of patterns on the ink-jet wet transfer printing fabric, develop a positioning gold stamping process which can be suitable for small-batch and various market requirements, develop a positioning gold stamping process which can be suitable for all fiber fabrics and all water-soluble dyes, and involve the improvement of the visual comfort of the printed fabrics and the improvement of the sale price of the printed fabrics, especially when the market competition is increasingly severe, the product differentiation is realized, and the market competitiveness is improved.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a positioning gold stamping method for an ink-jet wet transfer printing fabric 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 ink-jet wet transfer printing coloring printing so as to increase the added value of the printed fabric.

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

a positioning gold stamping method for an ink-jet wet transfer printing fabric comprises the following steps:

and drying, and performing steaming and washing procedures to obtain the positioned and gilded wet transfer printing fabric. (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, and the spot color is made into a gravure printing plate or a silk printing plate or a circular screen printing plate for gold stamping;

(2) coating a layer of printing paste on the hot stamping surface of the hot stamping foil, drying, printing the hot melt adhesive paste on the hot stamping surface of the hot stamping foil coated with the printing paste by the gravure printing plate, the silk printing plate or the rotary screen printing plate in the step (1) through gravure printing, silk printing or rotary screen printing, and drying to obtain the hot stamping foil with the hot melt adhesive patterns on the surface;

(3) installing the hot-melt adhesive flower-shaped gold stamping foil with the surface in the step (2) on an ink-jet printer, controlling a coloring and printing part through a computer, accurately registering and printing dye ink on the hot-melt adhesive flower-shaped gold stamping foil with the surface in the step (2) by using the ink-jet printer, and drying to obtain a wet transfer hot-melt adhesive foil containing hot melt adhesive;

(4) wetting a fabric to be printed by using wetting liquid containing a chemical auxiliary agent required by dyeing of a corresponding dye, attaching the wet transfer gold foil containing 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 and the pressure between the metal roller and the pressing roller, starting the heat transfer machine, dissolving the dye on the wet transfer gold foil by water 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 with the hot stamping bright layer on the surface of the gold foil, removing a transfer foil carrier, transferring the dye on the wet transfer gold foil and the hot stamping bright layer on the surface of the hot melt adhesive onto the fabric, drying, steaming, and washing, finally, obtaining a wet transfer printing fabric for positioning gold stamping;

or (3) the wet transfer film containing the hot melt adhesive is attached to the wet fabric, the wet transfer film is placed into a flat plate pressing machine, the wet transfer film is tightly attached to a heating plate, heating and pressurizing are carried out, under the action of temperature and pressure, the dye on the wet transfer film is dissolved by the moisture on the fabric, the hot melt adhesive is heated and melted, the hot melt adhesive drives the hot stamping bright layer on the surface of the gold stamping foil to be adhered to the surface of the fabric, the transfer film carrier is removed, and the dye on the wet transfer film and the hot melt adhesive drive the hot stamping bright layer on the surface of the gold stamping foil to be transferred to the fabric

In the step (1), the gravure plate or silk screen plate or round screen plate for gold stamping with the same pattern is completely consistent with the ink-jet printing size of the coloring printing, and can be precisely overprinted;

in the step (1), black and white film photoresist methods are adopted in the early stage of gravure plate making, silk screen plate making or cylinder plate making, and most of computer-controlled laser printing methods are adopted due to the development of computer technology in recent years, so that energy is saved, emission is reduced, plate making errors are reduced, ink-jet overprinting precision is improved, and accurate overprinting becomes very simple.

In the step (1), the gold stamping foil is also called as an alumite, is a hot stamping material prepared by coating and vacuum evaporation plating a layer of metal foil on a polyester film, has a golden color and a silver color, and gradually develops various color metal light colors and laser interference patterns and designs and colors; the invention is called as gold foil for convenience, the surface of the gold foil can be hot stamped, an electroplating metal layer or a roller printing coating layer is called as a bright layer, wherein the bright layer can be gold, silver, various colors and printing colors of electroplated metal aluminum, and also can be various pearly colors, transparent colors, black, various colors and printing colors of the roller printing.

In the step (2), the printing paste is a viscous paste 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; starch etherates or cellulose etherates, such as sodium carboxymethyl starch, hydroxypropyl starch, and sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, and the like; synthetic substances such as acrylic thickeners, polyacrylamides, and the like; etherified seed gums, such as etherified guar gum and the like.

In the step (2), the hot melt adhesive has various types, all of which have thermoplasticity and are insoluble in water, and can be changed into fluid with adhesiveness at high temperature, and organic polymers which recover solid after cooling can be used as the hot melt adhesive; the hot melt adhesive is divided into two types, one type is a high molecular substance which can be dissolved in an organic solvent to form a pasty fluid and comprises a polyurethane hot melt adhesive, a polyester hot melt adhesive, a polyamide hot melt adhesive and the like, and the hot melt adhesive can be directly dissolved in the organic solvent to form a hot melt adhesive slurry and then printed on a hot foil coated with a printing slurry; one is a high molecular substance which is insoluble in any organic solvent but can be ground into fine powder at low temperature, and comprises PA hot melt powder, PES hot melt powder, EVA hot melt powder and the like, and the high molecular substance is mixed with an organic solvent or water, thickened into slurry containing the hot melt powder by using the organic solvent or an aqueous thickening agent and then printed on the gold foil coated with the printing slurry; although the water-based hot melt adhesive has differences from the solvent method and the hot melt powder method in various aspects such as gold stamping fastness, gold stamping hand feeling, cost and the like, in recent years, the environmental protection requirement is more and more strict, the usage amount of the water-based hot melt adhesive is more and more large, and the main varieties of the water-based hot melt adhesive at present comprise water-based polyurethane emulsion, water-based acrylate emulsion, water-based EVA adhesive emulsion and the like; of course, the hot melt powder is blended into the solvent type hot melt adhesive slurry and the water type hot melt adhesive slurry, and the method is also a very good method for improving the gold stamping fastness.

In the step (2) and the step (3), firstly, a gravure or silk screen or a rotary screen is used for printing hot melt adhesive for gold stamping, then, coloring printing dye is printed on an inkjet printing machine in a precise registration mode, or, the coloring printing dye is printed on the inkjet printing machine, and then, the gravure or silk screen or rotary screen is used for overprinting the hot melt adhesive for gold stamping;

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.

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.