CN-122013574-A - Digital ink-jet glue free of shaking powder, preparation method of digital ink-jet glue and preparation method of fabric with patterns

Abstract

The application discloses a shake-free digital ink-jet glue, a preparation method thereof and a preparation method of a fabric with patterns, wherein the shake-free digital ink-jet glue is prepared by printing a corresponding pattern on a PET transfer film to be printed according to a preset pattern by a printer filled with paint color ink, paint white ink and the shake-free digital ink-jet glue in the embodiment, wherein a spray head filled with the shake-free digital ink-jet glue is an ink-cavity-free spray head, S202 is used for slightly drying the pattern on the PET transfer film in the step S201 until the ink does not flow and is not stained, S203 is used for spraying the shake-free digital ink-jet glue on the pattern on the PET transfer film in the step S202, and then drying treatment is carried out, and S204 is used for carrying out hot pressing treatment on the PET transfer film obtained in the step S203 and the fabric, and cooling and separating the PET transfer film.

Inventors

• CHEN LEI
• ZHANG TAO
• ZHOU BEI
• Ni Zhengyang

Assignees

• 浙江蓝宇数码科技股份有限公司

Dates

Publication Date

20260512

Application Date

20260324

Priority Date

20251231

Claims (10)

1. 1. A method of making a patterned fabric, the method comprising: S201, printing a corresponding pattern to a PET transfer film to be printed by using a printer filled with paint color ink, paint white ink and the shake-free digital ink-jet glue in the embodiment according to a preset pattern, wherein a nozzle filled with the shake-free digital ink-jet glue is an ink-cavity-free nozzle; S202, micro-drying the patterns on the PET transfer film in the step S201 until the patterns are free from flowing ink and staining; s203, spraying the shake-free digital ink-jet glue to the patterns on the PET transfer film in S202, and then drying; s204, carrying out hot pressing treatment on the PET transfer film and the fabric obtained in the step S203, cooling, and separating the PET transfer film, wherein the shake-free digital inkjet glue comprises the following components in percentage by weight: 5% -15% of thickening agent; 65-85% of polyester emulsion; 0.1-1% of wetting agent; 0.1% -0.5% of defoaming agent; 0.1% -0.5% of leveling agent; 0.05 to 0.2 percent of bactericide The balance of deionized water.
2. 2. The method for producing patterned fabric according to claim 1, wherein the method comprises sticking a layer of oil absorbing paper on the surface of the printed fabric obtained in the step S204, performing hot pressing again, and tearing off the film.
3. 3. The method according to claim 1 or 2, wherein in step S203, the digital inkjet glue without shake powder is printed 2 times in succession.
4. 4. The method of producing a patterned fabric according to claim 1 or 2, wherein in step S202, the heating temperature is 40-60 ℃ at the time of micro-drying.
5. 5. A method of producing a patterned fabric according to claim 1 or 2, wherein the amount of glue sprayed in S203 is 20-50%, more preferably 25-35% of the amount of ink sprayed in step S201.
6. 6. The method of producing a patterned fabric according to claim 1 or 2, wherein in step S203, the glue is sprayed in an amount of 60% -90%.
7. 7. The method of producing patterned fabric according to claim 1 or 2, wherein in step S202, the drying temperature is 140-160 ℃ and the drying time period is 3-5min.
8. 8. The method of producing a patterned fabric according to claim 1 or 2, wherein the hot pressing temperature is 150-170 ℃ for a period of 5-15s.
9. 9. The method for preparing the patterned fabric according to claim 1, wherein the method for preparing the shake-free digital inkjet glue comprises the following steps: S101, adding a thickening agent into a reaction kettle, adding polyester emulsion in a stirring state, and stirring until the mixture is uniform; s102, sequentially adding deionized water, a wetting agent, a defoaming agent, a leveling agent and a bactericide into a reaction kettle under the stirring state, and stirring until the materials are uniform, wherein the rotating speed is 500-800 r/min; and S103, filtering to obtain the digital ink-jet glue.
10. 10. A method of producing a patterned fabric according to claim 3, wherein in step S103, the viscosity of the digital inkjet glue after filtration is 20-500 mPa-S (25 ℃) and the surface tension is 25-45mN/m.

Description

Digital ink-jet glue free of shaking powder, preparation method of digital ink-jet glue and preparation method of fabric with patterns Technical Field The invention relates to the technical field of digital jet printing, in particular to digital ink-jet glue free of shaking powder, a preparation method of the digital ink-jet glue and a preparation method of a fabric with patterns. Background The DTF (Direct-to-Film) powder shaking process is a digital production technology which rapidly rises in the textile printing field in recent years, and the combination of high-precision patterns and diversified fabrics is realized through a core process of printing, powdering and transfer printing. The DTF powder shaking process has the core logic that digital patterns are sprayed on a PET film, the adhesive force is enhanced by spreading hot melt adhesive powder, and then the digital patterns are transferred to a target fabric through hot pressing. The specific process comprises ① digital spray printing, namely spraying aqueous pigment ink (containing white ink) on a special film for DTF by using an industrial spray head, ② electrostatic homogenizing, namely uniformly spreading hot melt adhesive powder with the particle size of 100-200 mu m by using a powder shaking machine, forming a glue layer with the thickness of 0.1-0.3mm by using electrostatic adsorption, and controlling the edge accuracy within +/-0.02 mm. ③ Intelligent drying, namely drying in a tunnel at the constant temperature of 80-120 ℃ to enable the rubber powder to be melted and solidified with the ink, and synchronously locking the color to prevent infiltration. ④ And (3) hot pressing and transfer printing, namely, pressing at 150-170 ℃ for 5-15 seconds, forming covalent bond combination between the adhesive layer and fabric fiber, and stripping the film to finish pattern transfer. Compared with traditional screen printing, the cost of DTF is reduced by 60% in small-batch orders (less than 100 pieces), the delivery cycle is compressed from 30 days to 1-3 days, and DTF has become the first choice process of fast and fashionable brands (such as ZARA, H & M). However, the DTF powder shaking process also has some problems, such as poor electrostatic adsorption uniformity of the rubber powder, and large influence of environmental humidity (optimal humidity 40% -60%), rubber powder particle size distribution (deviation easily occurs in a range of 100-200 μm), and easy occurrence of 'edge powder overflow' (0.5-1 mm more rubber powder residues on the edge of a pattern) or 'partial powder shortage' (coverage rate lower than 80%), which results in blurred edge and reduced color fastness (decolorization occurs after 3-5 times of washing) of the pattern after transfer. Secondly, the film (thickness is 0.1-0.3 mm) formed by curing the rubber powder can lead to hardening of the fabric, stiff hand feeling (hardness value is more than 60 Shore A), air permeability is reduced by 40-60% (from 800 g/(m 2, 24 h) to 300-480 g/(m 2, 24 h)) In addition, the environment-friendly hidden trouble exists, part of low-price rubber powder contains phthalate (plasticizer), skin irritation can be caused by long-term contact, dust pollution is easily formed in a powder shaking link by rubber powder particles (particle size is less than 100 mu m), and the dust concentration in a workshop often exceeds the occupational contact limit (PC-TWA 8mg/m 3), so that the health of workers is endangered. In addition, the pattern expressive force is poor, although the DTF supports gradual discoloration and fine lines, the "uneven accumulation of rubber powder" is easy to occur for the "ultra-large area solid color" (such as full-scale printing), the surface evenness is poor (the concave-convex difference is more than 0.1 mm), in addition, the printing ink quantity is usually only 1/3-1/2 of the dark color (such as the dark color T pattern ink quantity is about 2-3g/m < 2 >, and the dark color is about 6-8g/m < 2 >). The rubber powder needs a wet film of ink as a carrier, the contact area of the rubber powder and the ink is small due to insufficient ink quantity, the air flow purging after powder shaking is difficult to resist only by a small amount of point adsorption (particularly, the back air suction link of an automatic powder shaking machine), and finally, the residual rubber powder quantity is insufficient, so that the effective light-color pattern transfer printing cannot be performed. Therefore, manufacturers try to apply the shake-free glue instead of the shake-free glue to achieve the same effect. However, in order to realize "printing, i.e. shaping", a polymer thickener (such as polyurethane and acrylic ester) is usually added, the viscosity can reach 50-500cP, the resin contains more particles (particle size 100-500 nm), and the main nozzles in the market, such as EPSON I3200, are all nozzles with ink cavities, and the ink cavities of the nozzles can smoothly spray ink after being wet