Water-based gold stamping glue for digital ink jet and preparation method of water-based gold stamping glue

Abstract

The invention discloses a preparation method of water-based gold stamping glue for digital ink jet, and the water-based gold stamping glue for digital ink jet comprises the following components in percentage by weight: 10-30% of water, the coating is prepared from the following raw materials in percentage by weight: 15%-25% of an alcohol solvent, 50%-70% of polyester emulsion, 0.1%-1% of a wetting agent, 0.2%-0.3% of a flatting agent, 0.1%-0.5% of a first defoaming agent, 0.05%-0.2% of a second defoaming agent, 0.1%-2% of a neutralizing auxiliary agent, 0.05%-0.2% of a sterilizing agent and the balance of deionized water.

Description

Technical Field

[0001] This application relates to the field of digital inkjet printing technology, and in particular to a method for preparing a water-based hot stamping adhesive for digital inkjet printing. Background Technology

[0002] Traditional screen hot stamping is a "plate-pressing" process. First, a screen is created through exposure and development (the patterned areas are perforated mesh, while non-patterned areas are covered with photosensitive emulsion). During hot stamping, the hot stamping foil (composed of a base film, release layer, color layer, and adhesive layer) is placed between the substrate and the screen. Heat (60-150℃) and pressure (mechanical or pneumatic) melt the adhesive layer of the foil, allowing it to adhere only to the perforated patterned areas. Finally, the base film is peeled off to complete the hot stamping. The precision of traditional screen hot stamping is limited by the mesh count of the screen (commonly 80-300 mesh). Fine lines (<0.3mm) are easily blurred, edges may have slight jaggedness, and complex patterns (such as photorealistic details) are easily distorted. It is impossible to achieve clear visual edges for lines smaller than 0.1mm. Summary of the Invention

[0003] To address the aforementioned technical problems, this application provides a water-based hot stamping adhesive for digital inkjet printing. It eliminates the need for plate making, allowing direct control of the inkjet printer via digital equipment to precisely spray the adhesive onto the substrate (digital hot stamping film). Hot stamping foil is then applied to the substrate, and heating and pressure are used to react and bond the adhesive with the foil layer. After peeling off the base film, only the inkjet area retains the hot stamping effect. The entire hot stamping process is simple, low-cost (no plate making fees), and offers high pattern precision, achieving fine lines below 0.1mm with clear edges. Production is flexible and efficient. This formula can be used with digital inkjet sublimation inks without causing issues such as gold flyaway, gold adhesion, edge shrinkage, or reverse adhesion on the substrate.

[0004] To address the aforementioned technical problems, this application provides a water-based hot stamping adhesive for digital inkjet printing. This water-based hot stamping adhesive for digital inkjet printing comprises, by weight percentage, the following raw materials:

[0005] Alcohol solvents 15%-25%

[0006] Polyester emulsion 50-70%

[0007] Wetting agent 0.1-1%

[0008] Leveling agent 0.2-0.3%

[0009] First defoamer 0.1%-0.5%

[0010] Second defoamer 0.05%-0.2%

[0011] Neutralizing agent 0.1-2%

[0012] Fungicide 0.05%-0.2%

[0013] The remainder is deionized water.

[0014] According to one embodiment of this application, the alcohol solvent is at least one selected from glycerol, propylene glycol, ethylene glycol, and diethylene glycol.

[0015] According to one embodiment of this application, the polyester emulsion is anionic aliphatic waterborne polyurethane resin and acrylic self-crosslinking emulsion; preferably, the polyurethane resin is any one or a combination of two of Impaneil PU-1606, Huigu PU-2371, and Wengkaier PU-601; preferably, the acrylic self-crosslinking emulsion is any one or a combination of two of BASF JONCRYL® FLX 5040, 5002, BASF JONCRYL® 7266, and Top AQUALATE 8144.

[0016] According to one embodiment of this application, the wetting agent is an ethoxylated acetylene glycol surfactant selected from Evonik Surfynol 465, Surfynol 485, and Surfynol 420; and Herpufilo QY-680 and QY-660; the polyether-modified organosiloxane surfactant is at least one of BYK345, BYK348, TEGO wet240, wet270, and wet280.

[0017] According to one embodiment of this application, the leveling agent is BYK346.

[0018] According to one embodiment of this application, the defoamer is at least one of modified siloxane defoamer and modified acetylide diol defoamer.

[0019] According to one embodiment of this application, the first defoamer is an acetylenic diol defoamer that causes less damage to the system; the second defoamer is a molecular-type defoamer.

[0020] According to one embodiment of this application, the neutralizing agent is an alkaline liquid;

[0021] The bactericide is at least one of PROXEL GXL and Rohm and Haas LEX.

[0022] According to another aspect of this application, this application also provides a method for preparing a water-based hot stamping adhesive for digital inkjet printing, the method comprising:

[0023] S101, according to the component ratio of any of the above-mentioned digital inkjet water-based hot stamping adhesives, first add polyester emulsion, then add deionized water and stir. After the polyester emulsion is fully dispersed, add alcohol solvent, wetting agent, leveling agent, first defoamer, and second defoamer in sequence, stir for 30 minutes, then add neutralizing agent and bactericide in sequence, and continue stirring.

[0024] S102, after stirring, take samples to test viscosity, surface tension, conductivity, and pH; the acceptable viscosity range is 3-6 cps, preferably 4-5 cps; the acceptable surface tension range is 25-40 mN / m, preferably 27-32 mN / m; the acceptable conductivity range is 0-10 ms / cm, preferably 0-5 ms / cm; and the acceptable pH range is 7-9.

[0025] S103 filters out large particles and impurities from the adhesive to obtain water-based hot stamping adhesive for digital inkjet printing.

[0026] According to another aspect of this application, this application also provides a method for transferring water-based hot stamping adhesive and sublimation ink for digital inkjet printing onto fabric, characterized in that the method includes:

[0027] S201, the above-mentioned adhesive and sublimation ink are simultaneously printed onto the hot stamping transfer film using a digital inkjet printing device, and then the fabric is selected for high-temperature transfer and heating, so that the adhesive is pre-dried and will not flow. The preferred heating temperature is 40-50℃.

[0028] S202, drying in an oven, using an oven at least 3 meters long, to ensure that the hot stamping transfer film carrying ink and glue is fully dried in the oven, ensuring that the glue can dry into a film. Because of the sublimation properties of the thermal sublimation ink itself, preferably, the oven temperature is 110-120 degrees Celsius, and the oven travel time is 2-8 minutes.

[0029] S203, for cooling.

[0030] The beneficial effects of this application are as follows:

[0031] This water-based digital inkjet hot stamping adhesive requires no plate making during use; only digital files need to be changed to represent the design, offering high flexibility and making it particularly suitable for intricate and personalized designs. It also boasts low production costs and high efficiency for small-batch production.

[0032] The water-based digital inkjet hot stamping adhesive of this application is suitable for Epson i3200 printheads. It features smooth ink printing, good standby time, excellent ink drift performance, no slanted ink streaking, high compatibility between the adhesive and hot stamping foil, no consumable residue after a single use, and is highly efficient and environmentally friendly.

[0033] The water-based digital inkjet hot stamping adhesive of this application, when used in conjunction with the above-mentioned hot stamping process, eliminates problems such as gold sticking, edge shrinkage, and reverse adhesion during the hot stamping process, enabling continuous production. Detailed Implementation

[0034] The following description is intended to disclose this application and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of this application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this application.

[0037] According to one aspect of this application, a preferred embodiment of the water-based hot stamping adhesive for digital inkjet printing comprises, by weight percentage, the following raw materials:

[0038] Alcohol solvents 15%-25%

[0039] Polyester emulsion 50-70%

[0040] Wetting agent 0.1-1%

[0041] Leveling agent 0.2-0.3%

[0042] First defoamer 0.1%-0.5%

[0043] Second defoamer 0.05%-0.2%

[0044] Neutralizing agent 0.1-2%

[0045] Fungicide 0.05%-0.2%

[0046] The remainder is deionized water.

[0047] Preferably, the alcohol solvent is at least one of glycerol, propylene glycol, ethylene glycol, and diethylene glycol, and the hot stamping adhesive needs to have properties such as low viscosity, fast drying, and moisture resistance; more preferably, the solvent is ethylene glycol and diethylene glycol.

[0048] Preferably, the polyester emulsion is anionic aliphatic waterborne polyurethane resin or acrylic self-crosslinking emulsion;

[0049] It is worth mentioning that the polyester emulsion is a waterborne polyurethane resin, specifically a waterborne aliphatic polyurethane anionic copolymer with an average particle size of less than 150 nm and an elongation at break ranging from 300% to 600%. The polyurethane resin has good adhesion. When forming a film, aliphatic polyurethane has better high-temperature resistance than aromatic polyurethane. Since it does not contain benzene rings, it does not have the problem of high-temperature yellowing. Furthermore, its long-branched structure provides a more moderate hardness and softness.

[0050] It is worth mentioning that the acrylic self-crosslinking emulsion has a solid content of 30%-50%, and its viscosity at room temperature is generally 50-500 mPa·s (measured by a rotational viscometer at 25℃). This low to medium viscosity range allows it to adapt to the precision printing of digital inkjet printers while also enabling rapid leveling after printing, ensuring clear edges on the pattern. The average particle size is within 150nm, and the pH value is 7-9. As a self-crosslinking emulsion, the molecular chain contains reactive functional groups (such as hydroxyl, carboxyl, and hydrazide groups), eliminating the need for additional crosslinking agents. During drying or heating, intramolecular / intermolecular reactions (such as transesterification, amidation, or condensation reactions) can occur, forming a three-dimensional network structure. After crosslinking, the cohesiveness of the film is significantly improved (tear strength > 5 MPa), preventing the film from being "pulled away" (i.e., "detachment") when hot stamping foil is peeled off. The adhesive layer of hot stamping foil is mostly made of thermoplastic resin (such as polyamide and polyurethane). The acrylic self-crosslinking emulsion film exhibits moderate "hot melt tack" when heated (60-100℃), resulting in interfacial miscibility with the hot stamping foil adhesive layer (rather than simple physical adsorption). After cooling, it forms a high-strength bond (when peeling off the hot stamping foil base film, the fracture occurs at the release layer of the hot stamping foil, not between the adhesive film and the gold layer). The crosslinked film molecular chains form a stable network, and the residual amount of small molecule components (such as unreacted monomers) is extremely low (<0.1%), which meets the standards for food contact materials (such as FDA 21 CFR 175.300).

[0051] Preferably, the polyurethane is Impaneil PU-1606, Huigu PU-2371, or Weng Kai'er PU-601; the acrylic self-crosslinking emulsion is BASF JONCRYL® FLX 5040, 5002, BASF JONCRYL® 7266, or Top AQUALATE 8144.

[0052] Preferably, the acrylic self-crosslinking emulsion is BASF JONCRYL® FLX 5040 or BASF JONCRYL® 7266.

[0053] Preferably, the wetting agent is an ethoxylated acetylation diol surfactant selected from Evonik Surfynol 465, Surfynol 485, Surfynol 420; and Herpufilo QY-680, QY-660; the polyether-modified organosiloxane surfactant is at least one of BYK345, BYK348, TEGO wet240, wet270, and wet280.

[0054] It is worth mentioning that, compared with acetylenic diol surfactants, polyether-modified organosiloxane surfactants can significantly reduce the surface tension of the system (as low as 20-25 mN / m), which is much lower than that of acetylenic diols (usually 30-35 mN / m). They have a stronger wetting and spreading ability on low surface energy substrates. Polyether-modified organosiloxane surfactants have both defoaming and foam-stabilizing properties. Short-chain polyether-modified siloxanes have strong defoaming properties, while long-chain polyether-modified siloxanes can gently suppress foam.

[0055] Preferably, the leveling agent is BYK346.

[0056] Preferably, the defoamer is at least one of modified siloxane defoamer and modified acetylenic diol defoamer.

[0057] More preferably, the first defoamer is an acetylenol-based defoamer that causes less damage to the system. It is selected from Surfynol 104E, Surfynol DF-110L, Shanghai Heshi HOS 204E, and HOS 252 to eliminate large air bubbles generated in the digital inkjet printing adhesive during stirring and transportation.

[0058] More preferably, the second defoamer is a molecular defoamer that can eliminate "micro" bubbles (difficult to see with the naked eye) in the adhesive system, and is selected from Surfynol DF-178 and Surfynol PC.

[0059] Preferably, the neutralizing agent is an alkaline liquid, such as one of ethanolamine, diethanolamine, triethylamine, or ammonia water, and more preferably, the neutralizing agent is ammonia water.

[0060] It is worth mentioning that after the hot stamping adhesive is printed on the hot stamping film, it needs to undergo a drying process. The selected self-crosslinking polyester emulsion contains reactive functional groups (such as hydroxyl and carboxyl groups) on its molecular chain. Under the action of neutralizing agents, intramolecular / intermolecular condensation reactions occur during heating, making the system weakly acidic. During the drying and film formation process, the neutralizing agents need to decompose or volatilize rapidly in order to improve the cohesiveness of the emulsion after film formation.

[0061] Preferably, the bactericide is at least one of PROXEL GXL and Rohm and Haas LEX.

[0062] The beneficial effects of this application are as follows:

[0063] This water-based digital inkjet hot stamping adhesive requires no plate making during use; only digital files need to be changed to represent the design, offering high flexibility and making it particularly suitable for intricate and personalized designs. It also boasts low production costs and high efficiency for small-batch production.

[0064] The water-based digital inkjet hot stamping adhesive of this application is suitable for Epson i3200 printheads. It features smooth ink printing, good standby time, excellent ink drift performance, no slanted ink streaking, high compatibility between the adhesive and hot stamping foil, no consumable residue after a single use, and is highly efficient and environmentally friendly.

[0065] The water-based digital inkjet hot stamping adhesive of this application, when used in conjunction with the above-mentioned hot stamping process, eliminates problems such as gold sticking, edge shrinkage, and reverse adhesion during the hot stamping process, enabling continuous production.

[0066] According to another aspect of this application, this application also provides a method for preparing a water-based hot stamping adhesive for digital inkjet printing, wherein the method includes:

[0067] S101, according to the above ratio, first add polyester emulsion, then add deionized water and stir. After the polyester emulsion is fully dispersed, add alcohol solvent, wetting agent, leveling agent, first defoamer, and second defoamer in sequence, stir for 30 minutes, then add neutralizing agent and bactericide in sequence, and continue stirring.

[0068] S102, after stirring, take samples to test viscosity, surface tension, conductivity, and pH; the acceptable viscosity range is 3-6 cps, preferably 4-5 cps; the acceptable surface tension range is 25-40 mN / m, preferably 27-32 mN / m; the acceptable conductivity range is 0-10 ms / cm, preferably 0-5 ms / cm; and the acceptable pH range is 7-9.

[0069] S103, filter to remove large particles and impurities from the glue to obtain the final product; preferably, filter sequentially using a φ0.45um PP meltblown filter element, a φ0.2um glass fiber pleated filter element, and a φ1.0um nylon 6 pleated filter element.

[0070] According to another aspect of this application, this application also provides a method for transferring water-based hot stamping adhesive and sublimation ink for digital inkjet printing onto fabric, wherein the method includes:

[0071] S201, the above-mentioned adhesive and sublimation ink are simultaneously printed onto the hot stamping transfer film using a digital inkjet printing device, and then the fabric is selected for high-temperature transfer and heating, so that the adhesive is pre-dried and will not flow. The preferred heating temperature is 40-50℃.

[0072] S202, drying in a drying tunnel. A drying tunnel of at least 3 meters in length is used to ensure that the hot stamping transfer film carrying ink and adhesive is fully dried in the drying tunnel, ensuring that the adhesive can be dried into a film. Because of the sublimation properties of the thermal sublimation ink itself, the drying tunnel temperature is preferably 110-120 degrees Celsius, and the drying tunnel travel time is 2-8 minutes.

[0073] S203, Cooling: When hot, the hot stamping adhesive has a certain degree of stickiness. Directly rolling it up at this temperature will cause the hot stamping to stick back. During the exit of the drying tunnel, it undergoes a cooling process to prevent this. This serves two purposes: firstly, to cool the adhesive and prevent sticking back, and secondly, to prevent the polyester emulsion from absorbing moisture from the air and becoming damp. The digital inkjet hot stamping adhesive in this invention is used in conjunction with sublimation ink for simultaneous printing. The adhesive and ink are simultaneously printed onto the hot stamping transfer film, then dried and rolled up for storage. A high-temperature transfer (around 200℃) is then performed on a selected fabric to transfer the ink and gold foil onto the fabric. Therefore, specific techniques are required during the rolling process to achieve the best results.

[0074] Example 1

[0075] Preparation of digital hot stamping adhesive: Add JONCRYL® 7266 polyester emulsion, turn on the stirrer at 300 RPM, then add deionized water and stir for 30-60 minutes. Increase the stirring speed to 500 RPM, then add the alcohol solvent ethylene glycol, wetting agent Tego-240, leveling agent BYK-346, first defoamer Surfynol 104E, and second defoamer Surfynol PC in sequence, stirring for 30 minutes. Then add the neutralizing agent ammonia and the bactericide PROXEL GXL in sequence. Continue stirring for 120 minutes. Then filter the adhesive sequentially using a φ0.45um PP meltblown filter, a φ0.2um glass fiber pleated filter, and a φ1.0um nylon 6-pleated filter to remove large particles and impurities, obtaining the final product.

[0076] Comparative Examples 2-7 were prepared using the same preparation method as Example 1 but with different formulations. The specific formulations are shown in Table 1.

[0077] Gold Adhesion Test: Glue is printed onto a hot stamping film, dried, and then transferred to the fabric at 200℃ for 30 seconds. The residue on the hot stamping film is observed. The more residue, the less uniform the gold on the fabric after transfer.

[0078] Dry rubbing fastness test: After the gold foil is transferred onto the fabric, a rubbing fastness tester is used to test and rate the dry rubbing fastness.

[0079] Table 1. Ink formulations and performance test results of Examples 1 and Comparative Examples 2-7.

[0080] Substance Name Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Ethylene glycol 20% 20% 20% 20% 20% 20% 20% Polyester 7266 60% 50% 58% 65% Polyester PU-1606 60% Polyester PU-2371 60% Polyester 5040 60% TEGO-240 wetting agent 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% Leveling agent BYK-346 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% Surfynol 104E (defoamer) 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% Surfynol PC (defoamer) 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% PROXEL GXL bactericide 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% 0.1% Neutralizing agent: ammonia 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% 0.5% Deionized water margin margin margin margin margin margin margin Dry grinding fastness Level 5 Level 1 Level 2 Level 5 Level 4 Level 4-5 Level 5 Gold Non-stick Non-stick Non-stick Dip Non-stick Non-stick Non-stick Smoothness Print continuously for 3 hours without needle breakage 10 pins broke during 2 hours of continuous printing 10 pins broke during 3 hours of continuous printing 10 pins broke during 0.5 hours of continuous printing. / / / standby time 24-hour uninterrupted standby 24-hour uninterrupted standby 24-hour uninterrupted standby 24-hour standby without disconnection / / / Cleaning properties Clean once, fully unblocked Cleaned twice, fully unclogged. Clean once, fully unblocked Cleaned 3 times, but not cleared. / / /

[0081] The comparative tests in Table 1 show that polyurethane emulsion does not attract gold, but its dry rubbing fastness is relatively poor. Acrylic self-crosslinking emulsion, on the other hand, exhibits intramolecular / intermolecular reactions of its carboxyl groups during heating, forming a three-dimensional network structure that significantly enhances the cohesive force of the film and prevents gold adhesion. Furthermore, the rubbing fastness reaches its optimal value when the addition amount reaches 60%.

[0082] Comparative Examples 8-11 were obtained using the same preparation method as Example 1 but with different processes, as shown in Table 2.

[0083] Drying Test: Hot stamping film printed with both digital inkjet adhesive and sublimation ink was baked at the set oven temperature for 5 minutes. The area with the printed adhesive was then touched to check for dryness.

[0084] Ink color fading: A hot stamping film printed with both digital inkjet adhesive and sublimation ink was baked at the set oven temperature for 5 minutes, and then transferred to the fabric at 200 degrees Celsius for 30 seconds. The color depth of the sublimation color on the fabric after transfer was compared, and color density was tested using EyeOne. An OD value less than 1.40 indicates color fading, and the smaller the OD value, the more serious the color fading.

[0085] Reverse adhesion: After the hot stamping film has been printed and dried, use the side with adhesive to adhere to the back of the hot stamping film, with a size of 15*15cm. Press a 5kg weight on the film and let it stand for 2 hours. Take out the adhered hot stamping film and when peeling it off, check if there are any areas where the printed adhesive is stuck to the back of the hot stamping film, causing the gold to be picked off prematurely.

[0086] Table 2 Performance test results of Example 1 and Comparative Examples 8-11

[0087]

[0088] The test results in Table 2 show that the water-based digital hot stamping adhesive of the present invention can be used in a low oven (around 120°C).

[0089] This ensures that the hot stamping film containing the ink and adhesive is fully dried, and that the sublimation of the thermal sublimation ink is not affected while ensuring that the adhesive is fully dried and forms a film, thus achieving the best practical effect.

[0090] Those skilled in the art should understand that the embodiments of this application described above are merely examples and do not limit the scope of this application. The advantages of this application have been fully and effectively implemented. The functions and structural principles of this application have been shown and explained in the embodiments, and any variations or modifications can be made to the implementation of this application without departing from the stated principles.

Claims

1. A water-based hot stamping adhesive for digital inkjet printing, characterized in that, The digital inkjet water-based hot stamping adhesive contains, by weight percentage, the following raw materials: Alcohol solvents 15%-25% Polyester emulsion 50-70% Wetting agent 0.1-1% Leveling agent 0.2-0.3% First defoamer 0.1%-0.5% Second defoamer 0.05%-0.2% Neutralizing agent 0.1-2% Fungicide 0.05%-0.2% The remainder is deionized water.

2. The water-based hot stamping adhesive for digital inkjet printing according to claim 1, characterized in that, The alcohol solvent is at least one of glycerol, propylene glycol, ethylene glycol, and diethylene glycol.

3. The water-based hot stamping adhesive for digital inkjet printing according to claim 1, characterized in that, The polyester emulsion is anionic aliphatic waterborne polyurethane resin or acrylic self-crosslinking emulsion; preferably, the polyurethane resin is any one or a combination of two of Impaneil PU-1606, Huigu PU-2371, and Wengkaier PU-601; preferably, the acrylic self-crosslinking emulsion is any one or a combination of two of BASF JONCRYL® FLX 5040, 5002, BASF JONCRYL® 7266, and Top AQUALATE 8144.

4. The water-based hot stamping adhesive for digital inkjet printing according to claim 1, characterized in that, The wetting agent is an ethoxylated acetylation diol surfactant selected from Evonik Surfynol 465, Surfynol 485, Surfynol 420; and Herpufil QY-680, QY-660; the polyether-modified organosiloxane surfactant is at least one of BYK345, BYK348, TEGO wet240, wet270, and wet280.

5. The water-based hot stamping adhesive for digital inkjet printing according to claim 1, characterized in that, The leveling agent is BYK346.

6. The water-based hot stamping adhesive for digital inkjet printing according to claim 1, characterized in that, The defoamer is at least one of modified siloxane defoamers and modified acetylenic diol defoamers.

7. The water-based hot stamping adhesive for digital inkjet printing according to claim 1, characterized in that, The first defoamer is an acetylenic diol defoamer that causes less damage to the system; the second defoamer is a molecular-type defoamer.

8. The water-based hot stamping adhesive for digital inkjet printing according to claim 1, characterized in that, The neutralizing agent is an alkaline liquid; The bactericide is at least one of PROXEL GXL and Rohm and Haas LEX.

9. A method for preparing a water-based hot stamping adhesive for digital inkjet printing, characterized in that, The method includes: S101, according to the component ratio of the water-based hot stamping adhesive for digital inkjet printing as described in any of claims 1-8, first add polyester emulsion, then add deionized water and stir. After the polyester emulsion is fully dispersed, add alcohol solvent, wetting agent, leveling agent, first defoamer, and second defoamer in sequence, stir for 30 minutes, then add neutralizing agent and bactericide in sequence, and continue stirring. S102, after stirring, take samples to test viscosity, surface tension, conductivity, and pH; the acceptable viscosity range is 3-6 cps, preferably 4-5 cps; the acceptable surface tension range is 25-40 mN / m, preferably 27-32 mN / m; the acceptable conductivity range is 0-10 ms / cm, preferably 0-5 ms / cm; and the acceptable pH range is 7-9. S103 filters out large particles and impurities from the adhesive to obtain water-based hot stamping adhesive for digital inkjet printing.

10. A method for transferring water-based hot stamping adhesive and sublimation ink to fabric for digital inkjet printing, characterized in that, The method includes: S201, the above-mentioned adhesive and sublimation ink are simultaneously printed onto the hot stamping transfer film using a digital inkjet printing device, and then the fabric is selected for high-temperature transfer and heating, so that the adhesive is pre-dried and will not flow. The preferred heating temperature is 40-50℃. S202, drying in an oven, using an oven at least 3 meters long, to ensure that the hot stamping transfer film carrying ink and glue is fully dried in the oven, ensuring that the glue can dry into a film. Because of the sublimation properties of the thermal sublimation ink itself, preferably, the oven temperature is 110-120 degrees Celsius, and the oven travel time is 2-8 minutes. S203, for cooling.

Images