TW201404836A - Digital sample test method for cold-transfer printing - Google Patents

Abstract

In order to solve the problem of the ink of ink-jet printing is not suitable for being printed on paper of cold-transfer printing, and the problem of the conventional ink-jet printing method cannot meet the requirement of the sample test of cold-transfer printing, a digital sample test method which combines ink-jet printing with cold-transfer printing is provided. The method utilizes an ink of water-soluble dye type to accomplish the digital sample test of cold-transfer printing.

Description

Cold transfer printing digital sample method

The invention relates to the printing field of the printing and dyeing industry in the textile industry, in particular to a digital sample method for cold transfer printing.

Inkjet printing is slowly changing from inkjet text printing, and inkjet printing has a great correlation with textiles. Ink-jet Printing first appeared in 1878. Until 1951, Siemens patented the liquid ink into ink droplets. By 1964, the size of the ink droplets could be controlled by a special machine. The rate of ejection, forming the prototype of the inkjet machine, Hertz developed a continuous inkjet printer in 1967, which is the inkjet printer currently used in industry. In 1966, Siemens introduced the Piezoelectric Drop-on-Demand Ink-jet Printing. In 1979, Canon introduced the Drop-on-Demand Ink-jet Printing, called Bubble Ink-jet. Printing, in 1984 HP also launched the Drop-on-Demand Ink-jet Printing. Ink-jet printing is broadly divided into two categories, one (Continuous) continuous and the other (Drop-on-Demand) controllable. Continuous Ink-jet Printing continuous inkjet printers are mainly used in industrial applications, such as printing labels, tickets, cartons, etc. on paper, metal and plastic surfaces; the advantage is that the speed is fast, the smoothness of the surface of the material is not very important, the nozzle and There is a considerable distance between the materials, so the thickness of the material to be printed is not affected; the disadvantage is that the resolution is not very high, and it is usually used on rough, less analytical surfaces. Current continuous inkjet printer Continuous Ink-jet Printing develops both Binary Deflection and Multiple Deflection, which are based on the principle of voltage deflection. The former is based on inkjet when not charged and not inkjet when not charged. The ink is supplied by the method, and the ink droplets are ejected and then passed through the high-pressure deflecting plate to control the direction of the deflection, and the ink jet can be more accurately reached. The uncharged ink droplets are introduced into the ink guiding groove, which can be recycled and reused.

Inkjet printing is a new type of digital application technology. It is a method of printing files using a computer inkjet printer. The dye ink is directly printed on the textile according to the design pattern of the computer, thereby realizing inkjet printing.

The inkjet printing process has many advantages, such as fast printing process, convenient flower pattern change, realistic pattern, convenient use, and can adapt to the current small batch and multi-variety printing process, as well as the printing sample process. However, inkjet printing also brings some shortcomings, mainly due to the high cost of printing. The maintenance of inkjet printing heads in inkjet processes is difficult, and inkjet printing is not suitable for mass production. The current transfer printing technology is a transfer printing paper transfer method, which has the advantages of environmental protection and energy-saving printing, and is a new printing technology with promotion value. However, the transfer printing sample process also adopts a relatively traditional method, which requires the same method as the conventional printing sample, such as pattern design, plate making, engraving, etc., and then prints the dye ink on the transfer paper with a printing machine, and then transfers to On textiles, large samples can only be printed after confirmation by the customer. Since the cold transfer printing sample only requires a very small amount of printed fabric, the conventional printing sample method is costly and time consuming. Therefore, if a sample can be printed by a combination of inkjet printing and transfer printing, cost can be saved, and time and fast delivery can be achieved. However, currently known inkjet printing inks and inkjet printing thereof The process is also not suitable for cold transfer printing processes, such as:

1. The invention patent "200510047731.2", entitled "Use of a reactive dye as an inkjet printing ink", discloses the use of reactive dye inkjet printing and the formulation of reactive dyes.

2. Invention patents "98103230.3" and "98103229.X", both of which are "methods for printing textile materials according to the inkjet printing method", disclose water-soluble reactive dye inkjet inks, especially suitable for cellulose fiber material printing. .

3. The invention patent "98127147.2", entitled "Inkjet Printing Method for Textile Fiber Materials", discloses a textile fiber material comprising at least one disperse dye, an anionic copolymer and/or a nonionic block polymer and / or a water-based ink of a dispersant, and relates to inks containing these components.

4. Invention patent "02133084.0", entitled "Water-resistant inkjet printing, inkjet printing and inkjet printing of textiles", discloses the use of dyes having carboxymethyl groups in the manufacture of inks, components of dye inks It is a dye precursor and H ⁺ , N ^{2 +} , K ⁺ , NH ₄ ⁺ , Li ⁺ and the like. Under the action of heat, electromagnetic radiation or microwave of the nozzle during ink jetting, part of the dye is decarboxylated to form a water-soluble dye.

5. Invention patent "200510097007.0", entitled "A nano-scale polymer microemulsion for inkjet printing and a method for producing the same", discloses a synthesis of a high content of soft monomer butyl acrylate as a main polymerization monomer. The ink is printed to firmly adhere the pigment particles to the textile fibers.

6. The invention patent "200410013291.4", entitled "Water-soluble pigment inkjet printing ink", discloses a pigment, a water-soluble organic solvent, deionized water, a preservative, a self-crosslinking acrylic resin, a surfactant, Wetting agent, pH adjustment Inkjet printing ink composed of a solvent.

7. The invention patent "200510040115.4", entitled "an inkjet printing ink and a preparation method thereof", discloses an ultrafine pigment ink prepared by dispersing a pigment from a polycarboxylic acid type polymer copolymer as a dispersing agent and a fixing agent. The agent and the fixing agent are made into the same component.

8. The invention patent "200510092005.1", entitled "a nano-scale pigment inkjet printing ink and a preparation method thereof", discloses an inkjet ink, a cross-linked polymer micro-latex of pigment microcapsules, deionized water, water-soluble Composition of organic solvents, preservatives, humectants, surfactants and pH adjusters.

9. The invention patent "00102155.9", entitled "The thermal transfer printing ink for color printers", discloses an inkjet consisting of a sublimation dye and a pigment, an aqueous binder, a lubricant, pyrophosphoric acid, potassium and an antifoaming agent. Ink, can be used for thermal transfer printing paper.

In addition, in recent years, major companies around the world have conducted a series of studies on dyes for inkjet printing, and recommended a series of reactive dyes for inkjet printing. Sumitomo Corporation of Japan has published many research results and patents on reactive dyes for inkjet printing, and proposed reactive dyes for inkjet printing of cotton fiber textiles. These dyes are simple in structure, convenient in synthesis, and can meet the requirements of various sprays. Ink printing requirements. At the same time, companies are also introducing reactive dyes for inkjet printing. For example, Stork and Zeneca have jointly developed high-purity Procion P-type dyes for inkjet printing; Ciba's Cibacron MI ink series has 8 Variety, especially suitable for inkjet printing of piezoelectric and thermal bubble jet technology; DYStar's Jettex R reactive dye is composed of 13 varieties; Jettex Rink has 9 varieties, all of which are purified and specially treated. dye.

These inkjet printing inks all use the inkjet printer to directly print the desired pattern on the printed fabric. Therefore, it is not suitable for printing on the paper to make cold transfer printing paper, even if some of the inkjet printing ink can be printed on the paper. Above, it is only suitable for heat transfer printing paper, can not be made into practical cold transfer printing paper, and can not achieve cold transfer printing process, can not complete the requirements of cold transfer printing samples. Therefore, there is a need for a dye ink suitable for cold transfer inkjet printing, combined with the digital inkjet printing technology used, in order to successfully complete the digital sample work of cold transfer printing.

In order to solve the problem that the existing inkjet printing ink cannot meet the requirements of printing cold transfer printing paper, the current inkjet printing printing method also does not meet the requirements of the cold transfer printing sample process, and in order to overcome these problems, the invention adopts an inkjet printing and cold transfer. The digital sample method combined with printing technology, combined with the use of water-soluble dye-type inkjet ink, can solve the task of cold transfer printing digital samples.

The method for solving the above-mentioned technical problems of the cold transfer printing digital sample is: the cold transfer printing digital sample method is based on the customer sample or sample, computer graphics, input into the inkjet printer according to the pattern made by the computer, Printing inkjet ink on inkjet printer to print cold transfer printing paper on the base paper of cold transfer printing paper, cold transfer printing paper and printed textile close to cold transfer printing, cold-stacking to make sample textile The sample is formed by the customer or technician to determine the standard.

In the digital sample method of cold transfer printing: a. the inkjet printer is an industrial multicolor inkjet piezoelectric printer; b. the base paper of the cold transfer printing paper is coated with a polymer compound isolation layer of Paper; c. The inkjet ink is a water-soluble dye inkjet printing ink, formulated according to mass percentage: water-soluble dye is 10%-25%, humectant is 1%-4.5%, preservative is 0.001%-0.1% , thickener is 2%-8%, penetrant is 0.5%-3%, regulator is 0.1%-0.5%, adjusted by deionized water to 100%; d. The cold transfer printing is in the workshop natural temperature And transferring the printing pattern on the cold transfer printing paper to the printed textile under pressure; the cold-stack fixing is to cover the printed surface of the plastic film and the transferred textile, and is jointly wound into a reel in the workshop. Slowly rotate at natural temperature for fixing.

In addition, when the printing width of the base paper of the cold transfer printing paper for inkjet printing is <1 m, 60-90 g/m ² white paper is used; the printing width is At 1 m, 90-120 g/m ² white paper is used. The inkjet printer is an industrial 4-6 color inkjet piezoelectric printer; when using 4-color inkjet printing ink, it is yellow, magenta, cyan, and black; when using 6-color inkjet printing ink, it is yellow, Magenta, cyan, black, orange, and gold; piezoelectric printer resolution 600dpi, can be used to scrub the scrubbing nozzle with a non-woven cloth. The water-soluble dyes for the inkjet printing inks are reactive dyes, acid dyes and disperse dyes; the water-soluble dyes are first milled 3-4 times with a grinder, and then rotated by a porcelain ball mill for exiting. Filtered with a 2000 mesh screen after the cylinder, dye fineness 0.2um.

The humectant in the inkjet printing ink is N-methylpyrrolidone or glycerin, so that the dye in the inkjet printing ink of the periphery of the nozzle can be prevented from being dry and clogging within 24 hours. The preservative in the ink for inkjet printing is sodium benzoate, and the inkjet printing ink has a shelf life of three months and can be stored for nine months to one year under sealed conditions. The thickener in the ink for inkjet printing is xanthan gum, and the viscosity of the inkjet printing ink is controlled to be 4 cp or more, and the inkjet printing ink does not leak. The penetrant in the ink for inkjet printing is polyethylene glycol, ethanol and JFC penetrant, so that the color fastness of the sample textile after cold-stacking is 3-4. The regulator in the ink for inkjet printing is sodium dihydrogen phosphate and disodium hydrogen phosphate, and the pH reaches 7-8.

The invention mainly relates to how to directly apply the inkjet printing technology to the printing sample work of the textile by the process characteristic of the cold transfer printing, and to realize the sample method of the digital printing, the inkjet printing ink realizes the cold transfer printing digital The key technology of the sample method. The inkjet printing ink of the invention can be firstly adapted to the normal use of an inkjet printer, which can print paper into cold transfer printing paper and can solve the transfer rate between the cold transfer printing paper and the printed fabric. The problem of color rate makes the final printed sample product reach the standard.

The digital sample method for cold transfer printing of the present invention is a digital sample method combining ink jet printing and cold transfer printing technology, which can better solve the task of cold transfer printing sample. The digital sample method of the cold transfer printing of the present invention has many advantages over the conventional printing sample method. The first is that small batches of samples can be used. The products can be delivered on the same day or ready for the market. should. The second is the process of color separation, plate making, and color paste, which greatly simplifies production preparation. All the process parameters of the proofing are recorded and stored in the computer, which is the basis for mass production in the future. The third is to use four or six basic colors, theoretically can be transferred to the fabric to form 16.7 million colors, which is unmatched by the traditional one-color version of the printing. The fourth is that the transfer process has no residual slurry discharge, no steam is needed, the production process is less noisy, and the wastewater discharge is very low, which is a clean production process.

Example 1.

A method for digitally transferring cotton fabric cold transfer printing: cotton fabric specification: 40×40 133×72 145/147 cm (57/58 inch) cotton poplin cold transfer printing digital sample method shown in FIG. The process includes sample drawing, computer graphics, printing, transfer printing paper, cold transfer printing, fixing, samples and standards. The method of cold transfer printing digital samples is firstly based on the customer's sample or sample, computer graphics, inkjet printers according to the pattern made by the computer, and inkjet printing inks printed on the cold transfer printing paper by inkjet printer. The base paper is printed as cold transfer printing paper, and the cold transfer printing paper and the printed textile are closely combined for cold transfer printing, and the sample textile is prepared by cold stacking, and the sample is determined by a customer or a technician, and finally a standard sample is formed.

In the cold transfer printing digital sample method, the ink for inkjet printing is a dye type inkjet ink, and is a water-soluble dye inkjet printing ink, formulated according to the mass percentage: the water-soluble dye is a reactive dye, accounting for 25 %, the humectant is N-methylpyrrolidone, accounting for 4%. The preservative is sodium benzoate, accounting for 0.1%, the thickener is VANZAN, accounting for 4%, the penetrant is JFC penetrant for textile, accounting for 3%, and the regulator is sodium dihydrogen phosphate and disodium hydrogen phosphate. It accounts for 0.3% and is adjusted to 100% by deionized water.

When using, the reactive dyes of the commercial dyes should be rolled 3-4 times with a three-roll mill, and then rotated by a porcelain ball mill to make the ceramic balls and the dye collide with each other for 4-6. Hours, after exiting the cylinder, use a 2000 mesh screen to filter the dye fineness. 0.2 um, this dye and the remaining materials described above were homopolymerized and stirred.

Adding various additives to make the water-soluble dye inkjet printing inks show good performance, as measured: 4% N-methylpyrrolidone humectant makes the dye in the inkjet printing ink around the printer nozzle does not dry out within 24 hours. Blockage; 1% sodium benzoate preservative makes inkjet printing inks have a shelf life of three months to six months; 4% of VANZAN thickeners control the viscosity of inkjet printing inks to 3-4 cp, Inkjet printing ink, inkjet printing ink did not leak; 3% textile JFC penetrant to make the color fastness of the cold-fixed sample textile to grade 3; 3% sodium dihydrogen phosphate and phosphoric acid The disodium hydrogen hydride adjusting agent has a pH of about 7.5 for the ink for inkjet printing.

Inkjet printer uses Huipu 4-6 color industrial inkjet piezoelectric printer, the resolution of the printer reaches 600dpi, can clean the nozzle with a non-woven cloth; this embodiment uses yellow, magenta, cyan, black, orange and gold inkjet printing inks when printing with 6 colors.

The base paper of the cold transfer printing paper is coated with the paper of the separation layer of the patent No. "200610026581.1" entitled "Pigment Transfer Agent for Cold Transfer Printing Paper"; the base paper has a printing width of 1.2 m and uses 90 g/m ^{2 of} white paper.

The cold transfer printing process transfers the printing pattern on the cold transfer printing paper to the printed textile by a transfer method of a pair of pressurized rolls at the natural temperature of the workshop. Cold-stacking is to cover the printed surface of the plastic film and the transferred textile, and co-wound it into a reel, and fix it at a natural temperature of the workshop for 48 hours.

Example 2.

A method for digital transfer of nylon filament fabric cold transfer printing: nylon filament ramie, blending ratio (65/35)

The digital sample method for cold transfer printing of nylon filament ramie fabric is the same as that of the above Example 1, wherein the specific difference is: water-soluble dye is acid dye, accounting for 22%, humectant is glycerol, accounting for 4%, anti-corrosion The agent is sodium benzoate, accounting for 0.1%, the thickener is VANZAN, accounting for 3%, the penetrant is polyethylene glycol, 2%, and the regulator is sodium dihydrogen phosphate and disodium hydrogen phosphate, accounting for 0.3%. The pH of the ink for inkjet printing is about 7.8; it is adjusted to 100% by deionized water; the printing width of the base paper is 0.95 m, and 60 g/m ^{2 of} white paper is used.

Example 3.

A method for digital transfer of polyester fabric cold transfer printing: a digital sample method for cold transfer printing of 270 g/m ² twill polyester fabric with polyester fabric is the same as that of the above Example 1, wherein the specific difference is: water-soluble dye is Disperse dyes, accounting for 20%, humectant is glycerol, accounting for 4.5%, preservative is sodium benzoate, accounting for 0.01%, thickener is VANZAN, accounting for 2%, penetrant is polyethylene glycol , accounting for 3%.

The regulators are sodium dihydrogen phosphate and disodium hydrogen phosphate, accounting for 0.3%, the pH of the ink for inkjet printing is about 7.2, and the ink is adjusted to 100% by deionized water; the inkjet printer uses Huipu 4-color industrial inkjet pressure. Electric printers are yellow, magenta, cyan and black.

The base paper has a print width of 1.6 m and a 120 g/m ² white paper.

The invention will be further described below in conjunction with the accompanying drawings and embodiments.

Figure 1 is a process flow diagram of a digital transfer method for cold transfer printing.

Claims (9)

A digital sample method for cold transfer printing, including sample drawing, computer drawing, printing, transfer printing paper, cold transfer printing, fixing color, sample and standard sample process, wherein the digital sample method of cold transfer printing is based on the customer Sample or sample, computer graphics, inkjet printer input according to the pattern of the computer, inkjet ink printed on the base paper of the cold transfer printing paper by inkjet printer, printed as a cold transfer printing paper, the cold transfer printing paper and The printed textile is closely combined for cold transfer printing, and the sample textile is made by cold-stacking, and the sample is formed by the customer or the technician to determine the standard; wherein: a. The inkjet printer is an industrial multi-color inkjet piezoelectric a printer; b. the base paper of the cold transfer printing paper is a paper coated with a polymer compound isolation layer; c. the inkjet ink is a water-soluble dye inkjet printing ink, formulated according to the mass percentage: water-soluble dye is 10% -25%, humectant is 1%-4.5%, preservative is 0.001%-0.1%, thickener is 2%-8%, penetrant is 0.5%-3%, regulator is 0.1%-0.5%, Adjusted to 100% by deionized water; d. The cold transfer printing is in the car Transferring the printed pattern on the cold transfer printing paper to the printed textile at a natural temperature and pressure; the cold stack fixing is a plastic film and The printed pattern of the transferred textile is covered and co-wound into a reel, which is rotated at a natural temperature in the workshop to fix the color. The digital sample method of cold transfer printing according to claim 1, wherein: when the printing width of the base paper of the cold transfer printing paper for inkjet printing is <1 m, 60-90 g/m ^{2 of} white paper is used; Width At 1 m, 90-120 g/m ² white paper is used. A method of digital transfer printing of a cold transfer printing according to claim 1, wherein the ink jet printer is an industrial 4-6 color ink jet piezoelectric printer, and is yellow and magenta when using 4-color inkjet printing ink. , cyan and black; yellow, magenta, cyan, black, orange, and gold when using 6-color inkjet printing inks; resolution of piezoelectric printers 600dpi, can be used to scrub the scrubbing nozzle with a non-woven cloth. A method for digitally transferring a cold transfer printing according to claim 1, wherein: the water-soluble dye for the inkjet printing ink is a reactive dye, an acid dye, and a disperse dye; the water-soluble dye is first rolled by a grinder Grinding 3-4 times, then using a porcelain ball mill for rotary grinding, after exiting the cylinder and filtering with 2000 mesh screen, dye fineness 0.2um. The cold transfer printing digital sample method according to claim 1, wherein: the humectant in the inkjet printing ink is N-methylpyrrolidone or glycerin, and the dye in the inkjet printing ink of the periphery of the showerhead Can not dry dry blockage within 24 hours. The digital sample method of cold transfer printing according to claim 1, wherein: the preservative in the ink for inkjet printing is sodium benzoate, inkjet printing ink The shelf life is up to three months and can be stored for nine months to one year under sealed conditions. The digital sample method of cold transfer printing according to claim 1, wherein: the thickener in the ink for inkjet printing is xanthan gum, and the viscosity of the inkjet printing ink is controlled to 4 cp or more, inkjet printing ink. Will not leak. The cold transfer printing digital sample method according to claim 1, wherein: the penetrating agent in the ink for inkjet printing is polyethylene glycol, ethanol and JFC penetrant, and the sample textile after fixing the cold pile The color fastness reaches 3-4. The cold transfer printing digital sample method according to claim 4, wherein the regulator in the ink for inkjet printing is sodium dihydrogen phosphate and disodium hydrogen phosphate, and the pH is 7-8.