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CN-122013571-A - Water-based gold stamping glue for digital ink jet and preparation method thereof

CN122013571ACN 122013571 ACN122013571 ACN 122013571ACN-122013571-A

Abstract

The application discloses a preparation method of water-based bronzing glue for digital ink jet, which comprises the following raw materials, by weight, 15% -25% of alcohol solvent, 50% -70% of polyester emulsion, 0.1% -1% of wetting agent, 0.2% -0.3% of leveling agent, 0.1% -0.5% of first defoaming agent, 0.05% -0.2% of second defoaming agent, 0.1% -2% of neutralizing auxiliary agent, 0.05% -0.2% of bactericide and the balance deionized water.

Inventors

  • CHEN LEI
  • ZHANG TAO
  • ZHOU BEI
  • Ge Hanxing

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. The digital inkjet water-based hot stamping glue is characterized by comprising the following raw materials in percentage by weight: Alcohol solvent 15-25% 50-70% Of polyester emulsion Wetting agent 0.1-1% 0.2 To 0.3 percent of leveling agent 0.1 To 0.5 percent of first defoamer 0.05 To 0.2 percent of second defoamer 0.1 To 2 percent of neutralizing auxiliary agent 0.05 To 0.2 percent of bactericide The balance of deionized water.
  2. 2. The digital inkjet aqueous bronzing glue of claim 1, wherein the alcoholic solvent is at least one of glycerol, propylene glycol, ethylene glycol, diethylene glycol.
  3. 3. The digital inkjet aqueous gold stamping glue of claim 1, wherein the polyester emulsion is an anionic aliphatic aqueous polyurethane resin or an acrylic self-crosslinking emulsion, preferably the polyurethane resin is any one or a combination of two of a Inpanil PU-1606, a Hui Gu PU-2371 and a Weng Kaier PU-601, and preferably the acrylic self-crosslinking emulsion is any one or a combination of two of a BASF JONCRYL FLX 5040, 5002, a BASF JONCRYL FX 7266 and a Tuo Pu AQUALATE 8144.
  4. 4. The digital inkjet aqueous bronzing glue according to claim 1, wherein the wetting agent is an acetylenic diol ethoxy surfactant selected from the group consisting of Surfynol 465, surfynol 485, surfynol 420, hepofile QY-680, QY-660, and the polyether modified organosiloxane surfactant is at least one of BYK345, BYK348, TEGO wet240, wet270, wet 280.
  5. 5. The digital inkjet aqueous bronzing glue of claim 1, wherein the leveling agent is BYK346.
  6. 6. The digital inkjet aqueous bronzing glue of claim 1, wherein the defoamer is at least one of a modified silicone defoamer and a modified acetylenic diol defoamer.
  7. 7. The digital inkjet aqueous bronzing glue of claim 1, wherein the first defoamer is an acetylenic diol defoamer that is less damaging to the system, and the second defoamer is a molecular type defoamer.
  8. 8. The digital inkjet aqueous bronzing glue of claim 1, wherein the neutralizing aid is an alkaline liquid; The bactericide is at least one of PROXEL GXL and Robin Hasi LEX.
  9. 9. A method for preparing aqueous bronzing glue for digital inkjet, which is characterized by comprising the following steps: S101, adding polyester emulsion according to the component proportion of the digital inkjet water-based gold stamping glue according to any one of claims 1-8, adding deionized water and stirring, sequentially adding an alcohol solvent, a wetting agent, a leveling agent, a first defoaming agent, a second defoaming agent and stirring for 30min after the polyester emulsion is fully dispersed, sequentially adding a neutralizing auxiliary agent and a bactericide, and continuously stirring; s102, after stirring, sampling and testing viscosity, surface tension, conductivity and pH, wherein the qualified range of the viscosity is 3-6cps, preferably 4-5cps, the qualified range of the surface tension is 25-40mN/m, preferably 27-32mN/m, the qualified range of the conductivity is 0-10ms/cm, preferably 0-5ms/cm, and the qualified range of the pH is 7-9; s103, filtering to remove large particles and impurities in the glue, and obtaining the water-based gold stamping glue for digital ink jet.
  10. 10. The method for transferring the water-based gold stamping glue and the thermal sublimation ink to the fabric by digital ink jet is characterized by comprising the following steps of: S201, spraying the glue and the thermal sublimation ink on a gold stamping transfer film through digital spray printing equipment, then selecting a fabric for high-temperature transfer printing, heating to ensure that the glue is pre-dried and does not flow, and preferably heating at 40-50 ℃; S202, drying in a drying tunnel, namely, using a drying tunnel with the length of at least 3 meters, so that a gold stamping transfer film carrying ink and glue is sufficiently dried in the drying tunnel, and the glue is guaranteed to be dried to form a film, wherein the sublimation characteristic of the sublimation ink is involved, the temperature of the drying tunnel is preferably 110-120 ℃, and the drying tunnel is 2-8min in travel; s203, cooling.

Description

Water-based gold stamping glue for digital ink jet and preparation method thereof Technical Field The application relates to the technical field of digital jet printing, in particular to a preparation method of water-based gold stamping glue for digital ink jet. Background The traditional silk screen gold stamping belongs to a plate making-stamping process, namely, firstly, a silk screen plate is manufactured through steps of exposure, development and the like (a pattern area is hollow meshes, a non-pattern area is covered by photoresist), during the gold stamping, a gold stamping foil (which consists of a base film, a release layer, a color layer and an adhesive layer) is arranged between a printing object and the silk screen plate, the adhesive layer of the gold stamping foil is melted through heating (60-150 ℃) and pressure (mechanical or pneumatic), and the gold stamping foil is bonded with the printing object only in the pattern area of the hollow silk screen plate, and finally, the base film is peeled off to finish gold stamping. The traditional silk screen gold stamping precision is limited by the silk screen plate number (80-300 meshes commonly), fine lines (< 0.3 mm) are easy to blur, the edges can be slightly saw-tooth, complex patterns (such as photo-level details) are easy to distort, and the line of sight edge is clear under the fine lines below 0.1 mm. Disclosure of Invention In order to solve the technical problems, the application provides the water-based bronzing glue for digital ink jet, which is free from plate making, an ink jet printer is directly controlled by digital equipment, digital bronzing glue is precisely sprayed on the surface of a printing stock (digital bronzing film), a bronzing foil is covered on the printing stock, the glue is reacted and adhered with a glue layer of the bronzing foil by heating and pressure, and only an ink jet area remains a bronzing effect after the base film is stripped. The whole set of gold stamping process is simple, the cost is low (no platemaking cost is needed), the pattern precision is high, fine lines below 0.1mm can be realized, the edge is clear, the production is flexible, and the efficiency is high. The formula can be used in combination with digital ink-jet thermal sublimation ink, and the problems of flying gold, sticking gold, shrinking edges, anti-sticking and the like are not generated on a printing stock. In order to solve the technical problems, the application provides digital inkjet water-based bronzing glue, which comprises the following raw materials in percentage by weight: Alcohol solvent 15-25% 50-70% Of polyester emulsion Wetting agent 0.1-1% 0.2 To 0.3 percent of leveling agent 0.1 To 0.5 percent of first defoamer 0.05 To 0.2 percent of second defoamer 0.1 To 2 percent of neutralizing auxiliary agent 0.05 To 0.2 percent of bactericide The balance of deionized water. According to an embodiment of the present application, the alcohol solvent is at least one of glycerol, propylene glycol, ethylene glycol, and diethylene glycol. According to one embodiment of the application, the polyester emulsion is anionic aliphatic waterborne polyurethane resin and acrylic self-crosslinking emulsion, preferably the polyurethane resin is any one or the combination of two of Inpanil PU-1606, hui Gu PU-2371 and Weng Kaier PU-601, and preferably the acrylic self-crosslinking emulsion is any one or the combination of two of BASF JONCRYL 5040, 5002, BASF JONCRYL 7266 and Tuo Pu AQUALATE 8144. According to an embodiment of the application, the wetting agent is an alkyne diol ethoxy surfactant selected from Surfynol 465, surfynol 485 and Surfynol 420, hepofiole QY-680 and QY-660, and the polyether modified organosiloxane surfactant is at least one of BYK345, BYK348, TEGO wet240, wet270 and wet 280. According to an embodiment of the present application, the leveling agent is BYK346. According to an embodiment of the present application, the antifoaming agent is at least one of a modified silicone antifoaming agent and a modified acetylenic diol antifoaming agent. According to one embodiment of the application, the first defoamer is an alkyne diol defoamer with less damage to a system, and the second defoamer is a molecular type defoamer. According to an embodiment of the present application, the neutralizing auxiliary is an alkaline liquid; The bactericide is at least one of PROXEL GXL and Robin Hasi LEX. According to another aspect of the application, the application further provides a preparation method of the aqueous bronzing glue for digital inkjet, which comprises the following steps: S101, adding polyester emulsion according to the component proportion of any digital inkjet water-based gold stamping glue, adding deionized water, stirring, after the polyester emulsion is fully dispersed, sequentially adding an alcohol solvent, a wetting agent, a leveling agent, a first defoaming agent and a second defoaming agent, stirring for 30min, sequential