Thermal transfer printing material for ribbon and preparation process of thermal transfer printing material

Abstract

The invention relates to the technical field of thermal transfer materials, in particular to a thermal transfer material for a ribbon and a preparation process thereof, the thermal transfer material for the ribbon comprises an anti-sticking layer, a base film, a protective gloss oil layer and a color layer, the outer side of the base film is coated with the anti-sticking layer, the inner side of the base film is coated with the protective gloss oil layer, and the surface of the protective gloss oil layer is coated with the color layer. The prepared thermal transfer printing material for the ribbon silk ribbon is clean in demolding in the transfer printing process, bright, free of burrs, powder falling and set-off phenomena, good in color adhesive force, capable of preventing water washing, resistant to solarization and rubbing, capable of being normally used in the high-temperature and high-humidity (60 DEG C / 80%) environment, good in universality, wide in application range and the like.

Description

Technical Field

[0001] The invention relates to the technical field of thermal transfer materials, in particular to a thermal transfer material for ribbons and a preparation process thereof. Background Art

[0002] The graphic information on traditional streamers and ribbons can be printed in a variety of ways, including handwriting, transfer, thermal transfer, pad printing and screen printing. Among them, the handwriting method is inefficient, the text and pattern are simple, and it cannot provide rich patterns and colors. Transfer printing includes water transfer and thermal transfer. This method is to print the pattern or text on the water transfer or thermal transfer substrate first, and then transfer it to the streamer. The operation is relatively complicated and the cost is high. Pad printing is to use a pad printing machine to transfer the text or pattern from the mold to the streamer. This requires making a mold, applying ink, and then using a pad printing rubber head to press the ink on the streamer. The process is cumbersome and inefficient. Screen printing requires professional equipment and technology. It is completed using a curved screen printing machine, which requires a high investment. In addition, the layer reproduction range of screen printing is small, and it is difficult to print fine products.

[0003] The traditional hot stamping method is slow, and due to its use, it will cause indentations on the product, affecting the appearance, and the product has poor adhesion and is prone to cracking outdoors. In addition, the color of anodized aluminum ribbons is mostly gold and silver, the color is relatively single, the application range is narrow, and the adhesion is poor. It is easy to fall off in cold weather, affecting its use.

[0004] There are many types of printing materials for ribbons, such as nylon, polyester, spandex, acrylic, polypropylene and cotton, etc. However, the existing ribbons and silk ribbons have poor versatility, and the transfer effects on different materials vary greatly, which cannot meet the needs of customers for one product to be suitable for different materials. However, with the rapid development of domestic printer equipment and software development, more domestic printers have emerged, resulting in higher requirements for the versatility of ribbons and silk ribbons on the market.

[0005] Therefore, technical personnel in this field urgently need to develop a new thermal transfer material for streamers and ribbons and its preparation process, so that it has good durability, heat resistance, water washing and friction resistance, wide applicability, rich colors and other characteristics in the application of streamers and ribbon transfer production, thereby providing a reliable and efficient solution for the transfer production of streamers and ribbons. Summary of the invention

[0006] In view of the above technical problems, the purpose of the present invention is to propose a thermal transfer material for streamers and ribbons and a preparation process thereof, which aims to be more suitable for domestic streamers and ribbon printers, and to improve the product's performance in terms of adhesion, water resistance, sun resistance, rub resistance, etc., so as to meet the product use requirements while further increasing the product's use time. At the same time, through experiments on different streamer and ribbon materials, the product can achieve versatility in commonly used materials on the market and have a wider range of uses.

[0007] To achieve one of the above objects, the present invention is implemented according to the following technical solutions:

[0008] A thermal transfer material for streamers and ribbons comprises an anti-adhesive layer, a base film, a protective varnish layer and a color layer. The anti-adhesive layer is coated on the outer side of the base film, the protective varnish layer is coated on the inner side, and the color layer is coated on the surface of the protective varnish layer.

[0009] According to the above scheme, the main function of the anti-sticking layer is to improve the normal use of the product in a high temperature and high humidity (60℃ / 80%) environment, to avoid the product color layer from sticking during high temperature storage and transportation in summer, which affects the normal use of the product. At the same time, the anti-sticking layer plays the role of lubrication, anti-static, friction resistance, protection of the base film, and protection of the print head, so that the product can achieve smooth tape running and high-speed printing during the printing process. The main function of the protective varnish layer is to prevent the color layer from fading and discoloration, and at the same time, it has good color gloss, friction resistance, waterproof and other properties, improves the product transfer effect and service life, and expands the product application range. The function of the color layer is to provide the pigments required for the transfer of graphic information, reflect the vividness of the color, make the transfer image clear, and the color is beautiful, meeting the use requirements.

[0010] Preferably, the thickness of the anti-sticking layer is 0.3-0.5 μm, the thickness of the base film is 5-7 μm, the thickness of the protective varnish layer is 2-3 μm, and the thickness of the color layer is 4-6 μm.

[0011] Preferably, the anti-sticking layer comprises the following raw materials in weight percentage: 54-73.5wt% acrylic resin, 1-5wt% methyl silicone oil, 0.5-1wt% isocyanate, 20-30wt% polytetrafluoroethylene wax, and 5-10wt% silicon dioxide.

[0012] In this scheme, the acrylic resin is preferably a high TG resin. A high TG value can better improve the heat resistance of the anti-sticking layer and avoid the occurrence of anti-sticking in a high temperature environment. At the same time, the acrylic resin can improve the adhesion of the anti-sticking layer on the base film, and avoid the anti-sticking layer falling off due to environmental changes and long-term placement, which affects the normal use of the product. The main chain of the methyl silicone oil is composed of -Si-O-Si- bonds, and has a structure similar to that of inorganic polymers. Its bond energy is very high, so it has excellent heat resistance and can improve the heat resistance of the product. At the same time, the methyl silicone oil has low surface tension, and low surface tension means high surface activity, so it has excellent defoaming, anti-foaming performance, isolation performance and lubrication performance with other substances, which can further improve the state of the anti-sticking layer coating, facilitate obtaining a better coating surface, and further improve the smoothness of the product. The main function of the isocyanate is to be used for silicone oil curing, which further improves the coating speed. The polytetrafluoroethylene wax is preferably a high melting point, with excellent wear resistance, self-lubricating property, chemical resistance and thermal stability; it can significantly improve the wear resistance of the product, the smooth surface feel, and enhance various properties such as scratch resistance. The silicon dioxide has relatively stable chemical properties, high heat resistance and high wear resistance, and plays a role in preventing sedimentation and sagging in the anti-adhesive layer.

[0013] Preferably, the protective varnish layer comprises the following raw materials in weight percentage: 45-55wt% montan wax, 10-20wt% rice bran wax, 10-20wt% SEBS resin, 5-10wt% polyester resin elastomer, and 1-5wt% trimellitic acid ester plasticizer.

[0014] In this scheme, the montan wax is relatively hard, has a high melting point, is acid-resistant, has chemical stability, good gloss, and high surface finish, which can provide excellent gloss for the protective varnish layer, improve the color gloss and certain protective performance of the product transfer image and text. The rice bran wax is preferably a high-purity food-grade rice bran wax, which is a light yellow block with a melting point of 60-85°C. It can be arbitrarily miscible with various natural waxes, has certain elasticity and moisture resistance, and can be used as a moisture-proof agent and a release agent. It can effectively ensure the complete transfer and demolding of the color layer, so that the ribbon and ribbon font transfer is complete, improve the printing effect of the ribbon and ribbon font, and at the same time improve the storage time of the product in a humid environment. The SEBS resin has excellent aging resistance, which can effectively improve the preservation of the ribbon and ribbon graphic information. The graphic information fades slowly under daily light, thereby achieving a longer display effect. At the same time, the SEBS resin can improve the film-forming property of the protective varnish layer, and better improve the surface flatness of the protective varnish layer, so that the color layer is more evenly attached to the coating surface. The polyester resin elastomer preferably has a low TG value, and a negative TG value can greatly improve the adhesion of the coating and assist the coating in film formation. The trimellitic acid ester plasticizer has excellent high temperature resistance and good negative low temperature flexibility, which can improve the flexibility of the protective varnish layer and avoid the embrittlement and chipping of the product in a low temperature environment.

[0015] Preferably, the protective varnish layer comprises the following raw materials in weight percentage: 10-15wt% low TG polyester resin, 15-20wt% medium TG polyester resin, 15-20wt% styrene-butadiene rubber, 25-30wt% Fischer-Tropsch wax, 8-13wt% microcrystalline wax, 1-2wt% dispersant, 20-25wt% pigment. More preferably, the TG value of the low TG polyester resin is 3-15, and the TG value of the medium TG polyester resin is 30-50.

[0016] In this scheme, the low TG polyester resin can improve the adhesion between the color layer and the substrate, and it is not easy to fall off after transfer; the medium TG polyester resin can enhance the heat resistance of the color layer, and it is not easy to stick during high-temperature transportation or storage, resulting in a decrease in transfer ability; the styrene-butadiene rubber has excellent wear resistance, heat resistance, and aging resistance, which improves the preservation of the transferred fonts, and at the same time prevents the color layer pigment from penetrating into the substrate, resulting in a decrease in the hiding power of the color layer, which cannot completely cover the substrate and thus affect the appearance, and will further improve the adhesion of the color layer, prevent the transfer of graphic information from falling off, and affect the use. The main function of the Fischer-Tropsch wax and microcrystalline wax is to improve the viscosity of the coating liquid, improve the wettability of the coating liquid, facilitate the better transfer of the color layer to the surface of the substrate, and improve the integrity of the transferred font. The main function of the dispersant is to make the pigment disperse more evenly, and generally a dispersant suitable for the corresponding pigment is selected. The pigment is selected from commonly used pigments in the industry according to the color required by the product.

[0017] According to another object of the present invention, a preparation process of the thermal transfer material for the ribbon is proposed, comprising the following steps:

[0018] S1. Prepare an anti-sticking coating liquid: first prepare a mixed solvent of toluene and butanone in a volume ratio of 1:1, then disperse the polytetrafluoroethylene wax powder evenly with the mixed solvent and grind it to prepare a polytetrafluoroethylene wax powder solution with a concentration of 15-25% and an average particle size of 0.3-0.5 μm; dissolve the acrylic resin in the mixed solvent to prepare an acrylic resin solution with a concentration of 15-20%; then mix and disperse the acrylic resin solution and methyl silicone oil, silicon dioxide, and polytetrafluoroethylene wax powder solution according to a dry weight ratio to prepare an anti-sticking layer solution with a concentration of 5%-10%, and add an isocyanate curing agent and stir evenly before use;

[0019] S2. Prepare protective varnish coating liquid: firstly dissolve montan wax and rice bran wax at 120-140°C, then add SEBS resin and polyester resin elastomer and dissolve them at 150-160°C; then add trimellitic acid ester plasticizer and stir evenly, and keep the temperature at 110-120°C;

[0020] S3. Prepare the color layer coating liquid: firstly dissolve the Fischer-Tropsch wax and microcrystalline wax at 110-130°C, then add the polyester resin and styrene-butadiene rubber at 150-160°C, keep the temperature at 120-130°C, finally add the dispersant and pigment to disperse evenly, and grind to a particle size of ≤2μm;

[0021] S4, apply an anti-sticking layer on the outside of the PET film, using a 400-600 wire mesh roller and a drying temperature of 90-110°C;

[0022] S5. Apply a protective varnish layer on the PET film, using a 300-400 mesh roller at a coating temperature of 105-110°C, then cool down, cool and dry;

[0023] S6. Apply a color layer on the surface of the protective varnish layer, using a 200-300 wire mesh roller, with a coating temperature of 110-115°C, cooling, cooling and drying, and then rolling up to obtain a thermal transfer material for ribbons.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The thermal transfer material for streamers and ribbons prepared by the present invention can be cleanly removed from the film during the transfer process, has brightness, is free of burrs, and does not cause powder loss or dirtiness. It also has good color adhesion, is resistant to water flow, sunlight, and rubbing, and can be used normally in a high temperature and high humidity (60°C / 80%) environment. It has the advantages of good versatility and a wide range of uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of each layer of a thermal transfer material for a ribbon in Example 1 of the present invention. DETAILED DESCRIPTION

[0027] The present invention is further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0028] The raw materials used in the present invention are purchased from conventional channels or prepared by existing technical methods.

[0029] Example 1

[0030] like Figure 1 As shown, this embodiment proposes a thermal transfer material for streamers and ribbons, including an anti-sticking layer, a base film, a protective varnish layer and a color layer. The anti-sticking layer is coated on the outer side of the base film, the protective varnish layer is coated on the inner side, and the color layer is coated on the surface of the protective varnish layer.

[0031] Among them, the main function of the anti-sticking layer is to improve the normal use of the product in a high temperature and high humidity (60℃ / 80%) environment, to avoid the product color layer from sticking during high temperature storage and transportation in summer, which affects the normal use of the product. At the same time, the anti-sticking layer plays the role of lubrication, anti-static, friction resistance, protection of the base film, and protection of the print head, so that the product can achieve smooth tape running and high-speed printing during the printing process. The main function of the protective varnish layer is to prevent the color layer from fading and discoloration, and at the same time, it has good color gloss, friction resistance, waterproof and other properties, improves the product transfer effect and service life, and expands the product application range. The function of the color layer is to provide the pigments required for the transfer of graphic information, reflect the vividness of the color, make the transfer image clear, and the color is beautiful, meeting the use requirements.

[0032] In this embodiment, the thickness of the anti-sticking layer is 0.3-0.5 μm, the thickness of the base film is 5-7 μm, the thickness of the protective varnish layer is 2-3 μm, and the thickness of the color layer is 4-6 μm.

[0033] Specifically, the anti-sticking layer comprises the following raw materials in weight percentage: 54-73.5wt% acrylic resin, 1-5wt% methyl silicone oil, 0.5-1wt% isocyanate, 20-30wt% polytetrafluoroethylene wax, and 5-10wt% silicon dioxide.

[0034] Among them, the acrylic resin is preferably a high TG resin, and a high TG value can better improve the heat resistance of the anti-sticking layer, avoid the occurrence of anti-sticking in a high temperature environment, and the acrylic resin can improve the adhesion of the anti-sticking layer on the base film, avoid the anti-sticking layer falling off due to environmental changes and long-term placement, and affect the normal use of the product. The main chain of the methyl silicone oil is composed of -Si-O-Si- bonds, and has a structure similar to that of inorganic polymers. Its bond energy is very high, so it has excellent heat resistance and can improve the heat resistance of the product. At the same time, the methyl silicone oil has low surface tension, and low surface tension means high surface activity, so it has excellent defoaming, anti-foaming performance, isolation performance and lubrication performance with other substances, which can further improve the state of the anti-sticking layer coating, facilitate obtaining a better coating surface, and further improve the smoothness of the product. The main function of the isocyanate is to be used for silicone oil curing, which further improves the coating speed. The polytetrafluoroethylene wax is preferably a high melting point, with excellent wear resistance, self-lubricating property, chemical resistance and thermal stability; it can significantly improve the wear resistance of the product, the smooth surface feel, and enhance various properties such as scratch resistance. The silicon dioxide has relatively stable chemical properties, high heat resistance and high wear resistance, and plays a role in preventing sedimentation and sagging in the anti-adhesive layer.

[0035] In this embodiment, the protective varnish layer includes the following raw materials in weight percentage: 45-55wt% montan wax, 10-20wt% rice bran wax, 10-20wt% SEBS resin, 5-10wt% polyester resin elastomer, and 1-5wt% trimellitic acid ester plasticizer.

[0036] Among them, the montan wax is relatively hard, has a high melting point, is acid-resistant, has good chemical stability and glossiness, and has a high surface finish. It can provide excellent glossiness for the protective varnish layer, improve the color glossiness of the product transfer image and text, and certain protective performance. The rice bran wax is preferably a high-purity food-grade rice bran wax, which is a light yellow block with a melting point of 60-85°C. It can be arbitrarily miscible with various natural waxes, has certain elasticity and moisture resistance, and can be used as a moisture-proof agent and a release agent. It can effectively ensure the complete transfer and demolding of the color layer, so that the ribbon and ribbon font transfer is complete, improve the printing effect of the ribbon and ribbon font, and at the same time improve the storage time of the product in a humid environment. The SEBS resin has excellent aging resistance, can effectively improve the preservation of the ribbon and ribbon graphic information, and the graphic information fades slowly under daily light, thereby achieving a longer display effect. At the same time, the SEBS resin can improve the film-forming property of the protective varnish layer, and better improve the surface flatness of the protective varnish layer, so that the color layer is more evenly attached to the coating surface. The polyester resin elastomer preferably has a low TG value, and a negative TG value can greatly improve the adhesion of the coating and assist the coating in film formation. The trimellitic acid ester plasticizer has excellent high temperature resistance and good negative low temperature flexibility, which can improve the flexibility of the protective varnish layer and avoid the embrittlement and chipping of the product in a low temperature environment.

[0037] In this embodiment, the protective varnish layer comprises the following raw materials in weight percentage: 10-15wt% low TG polyester resin, 15-20wt% medium TG polyester resin, 15-20wt% styrene-butadiene rubber, 25-30wt% Fischer-Tropsch wax, 8-13wt% microcrystalline wax, 1-2wt% dispersant, and 20-25wt% pigment. More preferably, the TG value of the low TG polyester resin is 3-15, and the TG value of the medium TG polyester resin is 30-50.

[0038] Among them, the low TG polyester resin can improve the adhesion between the color layer and the printing substrate, and it is not easy to fall off after transfer; the medium TG polyester resin can enhance the heat resistance of the color layer, and it is not easy to stick during high-temperature transportation or storage, resulting in a decrease in transfer ability; the styrene-butadiene rubber has excellent wear resistance, heat resistance, and aging resistance, which improves the preservation of the transfer font, and at the same time prevents the color layer pigment from penetrating into the interior of the printing substrate, resulting in a decrease in the hiding power of the color layer, which cannot completely cover the printing substrate and thus affects the appearance, and will further improve the adhesion of the color layer, prevent the transfer of graphic information from falling off, and affect the use. The main function of the Fischer-Tropsch wax and microcrystalline wax is to improve the viscosity of the coating liquid, improve the wettability of the coating liquid, facilitate the better transfer of the color layer to the surface of the printing substrate, and improve the integrity of the transfer font. The main function of the dispersant is to make the pigment disperse more evenly, and generally a dispersant suitable for the corresponding pigment is selected. The pigment is selected from commonly used pigments in the industry according to the color required by the product.

[0039] Example 2

[0040] This embodiment proposes a preparation process of the thermal transfer material for the ribbons and ribbons described in Embodiment 1, comprising the following steps:

[0041] S1. Prepare an anti-sticking coating liquid: first prepare a mixed solvent of toluene and butanone in a volume ratio of 1:1, then disperse the polytetrafluoroethylene wax powder evenly with the mixed solvent and grind it to prepare a polytetrafluoroethylene wax powder solution with a concentration of 15-25% and an average particle size of 0.3-0.5 μm; dissolve the acrylic resin in the mixed solvent to prepare an acrylic resin solution with a concentration of 15-20%; then mix and disperse the acrylic resin solution and methyl silicone oil, silicon dioxide, and polytetrafluoroethylene wax powder solution according to a dry weight ratio to prepare an anti-sticking layer solution with a concentration of 5%-10%, and add an isocyanate curing agent and stir evenly before use;

[0042] S2. Prepare protective varnish coating liquid: firstly dissolve montan wax and rice bran wax at 120-140°C, then add SEBS resin and polyester resin elastomer and dissolve them at 150-160°C; then add trimellitic acid ester plasticizer and stir evenly, and keep the temperature at 110-120°C;

[0043] S3. Prepare the color layer coating liquid: firstly dissolve the Fischer-Tropsch wax and microcrystalline wax at 110-130°C, then add the polyester resin and styrene-butadiene rubber at 150-160°C, keep the temperature at 120-130°C, finally add the dispersant and pigment to disperse evenly, and grind to a particle size of ≤2μm;

[0044] S4, apply an anti-sticking layer on the outside of the PET film, using a 400-600 wire mesh roller and a drying temperature of 90-110°C;

[0045] S5. Apply a protective varnish layer on the PET film, using a 300-400 mesh roller at a coating temperature of 105-110°C, then cool down, cool and dry;

[0046] S6. Apply a color layer on the surface of the protective varnish layer, using a 200-300 wire mesh roller, with a coating temperature of 110-115°C, cooling, cooling and drying, and then rolling up to obtain a thermal transfer material for ribbons.

[0047] Application Examples

[0048] The thermal transfer material for the streamer ribbon prepared in Example 2 is used in combination with a special printer. The printing temperature of the print head is about 180°C, which can well demold and transfer the materials in the product, so that the transferred image and text are free of burrs, powder dragging, and dirt. At the same time, the print head structure adopts a flat pressing method, and the contact area between the print head and the product is large, which improves the printing speed. The specific operation method is as follows: After installing the product of the present invention in a specific position, open the special software to set the template. After the setting is successful, print with one click. The production process is environmentally friendly and odorless, the production effect is perfect and natural, the operation is simple, and it can be obtained immediately.

[0049] The product of the present invention was tested according to the corresponding testing method, and the test results are as follows:

[0050] 1. The thermal transfer material for ribbons and ribbons of the present invention can be removed cleanly during the transfer process, has brightness, is free of burrs, and does not cause powder loss or dirt.

[0051] 2. The color has good adhesion. After the product is transferred to the printing substrate through the printer, the non-woven fabric is rubbed dry 30 times with a multi-functional friction meter with a force of 500g, and the transferred information does not fall off.

[0052] 3. Anti-water flow washing. After the product is transferred to the printing substrate through the printer, it is rinsed under water for 1 minute without any loss of the transferred information.

[0053] 4. After being placed in high temperature and high humidity (60℃ / 80%) for 24 hours, the product did not show any problems such as deformation and loose core, and the transfer effect did not change significantly.

[0054] 5. The ribbons produced have been verified by the market to ensure that the transferred information will not fall off or fade within three months.

[0055] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. All technical variations made according to the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. A thermal transfer material for ribbons, characterized in that: The invention comprises an anti-adhesive layer, a base film, a protective varnish layer and a color layer. The anti-adhesive layer is coated on the outer side of the base film, the protective varnish layer is coated on the inner side, and the color layer is coated on the surface of the protective varnish layer.

2. A thermal transfer material for streamers and ribbons according to claim 1, characterized in that: The thickness of the anti-sticking layer is 0.3-0.5 μm, the thickness of the base film is 5-7 μm, the thickness of the protective varnish layer is 2-3 μm, and the thickness of the color layer is 4-6 μm.

3. A thermal transfer material for streamers and ribbons according to claim 2, characterized in that: The anti-sticking layer comprises the following raw materials in weight percentage: 54-73.5wt% acrylic resin, 1-5wt% methyl silicone oil, 0.5-1wt% isocyanate, 20-30wt% polytetrafluoroethylene wax, and 5-10wt% silicon dioxide.

4. A thermal transfer material for streamers and ribbons according to claim 3, characterized in that: The protective varnish layer comprises the following raw materials in weight percentage: 45-55wt% montan wax, 10-20wt% rice bran wax, 10-20wt% SEBS resin, 5-10wt% polyester resin elastomer, and 1-5wt% trimellitic acid ester plasticizer.

5. A thermal transfer material for streamers and ribbons according to claim 4, characterized in that: The color layer comprises the following raw materials in weight percentage: 10-15wt% low TG polyester resin, 15-20wt% medium TG polyester resin, 15-20wt% styrene-butadiene rubber, 25-30wt% Fischer-Tropsch wax, 8-13wt% microcrystalline wax, 1-2wt% dispersant, and 20-25wt% pigment.

6. A thermal transfer material for streamers and ribbons according to claim 5, characterized in that: The TG value of the low TG polyester resin is 3-15, and the TG value of the medium TG polyester resin is 30-50.

7. A thermal transfer material for streamers and ribbons according to claim 5 or 6, characterized in that: The base film is a PET film.

8. A process for preparing a thermal transfer material for ribbons according to claim 7, characterized in that: The steps include: S1. Prepare an anti-sticking coating liquid: first prepare a mixed solvent of toluene and butanone in a volume ratio of 1:1, then disperse the polytetrafluoroethylene wax powder evenly with the mixed solvent and grind it to prepare a polytetrafluoroethylene wax powder solution with a concentration of 15-25% and an average particle size of 0.3-0.5 μm; dissolve the acrylic resin in the mixed solvent to prepare an acrylic resin solution with a concentration of 15-20%; then mix and disperse the acrylic resin solution and methyl silicone oil, silicon dioxide, and polytetrafluoroethylene wax powder solution according to a dry weight ratio to prepare an anti-sticking layer solution with a concentration of 5%-10%, and add an isocyanate curing agent and stir evenly before use; S2. Prepare protective varnish coating liquid: firstly dissolve montan wax and rice bran wax at 120-140°C, then add SEBS resin and polyester resin elastomer and dissolve them at 150-160°C; then add trimellitic acid ester plasticizer and stir evenly, and keep the temperature at 110-120°C; S3. Prepare the color layer coating liquid: firstly dissolve the Fischer-Tropsch wax and microcrystalline wax at 110-130°C, then add the polyester resin and styrene-butadiene rubber at 150-160°C, keep the temperature at 120-130°C, finally add the dispersant and pigment to disperse evenly, and grind to a particle size of ≤2μm; S4, apply an anti-sticking layer on the outside of the PET film, using a 400-600 wire mesh roller and a drying temperature of 90-110°C; S5. Apply a protective varnish layer on the PET film, using a 300-400 mesh roller at a coating temperature of 105-110°C, then cool down, cool and dry; S6. Apply a color layer on the surface of the protective varnish layer, using a 200-300 wire mesh roller, with a coating temperature of 110-115°C, cooling, cooling and drying, and then rolling up to obtain a thermal transfer material for ribbons.

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