CN115972798A - Thermal sublimation transfer film for metal printing stock - Google Patents
Thermal sublimation transfer film for metal printing stock Download PDFInfo
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- CN115972798A CN115972798A CN202211537960.2A CN202211537960A CN115972798A CN 115972798 A CN115972798 A CN 115972798A CN 202211537960 A CN202211537960 A CN 202211537960A CN 115972798 A CN115972798 A CN 115972798A
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Abstract
The invention relates to the technical field of thermal transfer printing, in particular to a thermal sublimation retransfer film for a metal printing stock. Comprises a substrate, a release layer and a dye receiving layer; the dye-receiving layer comprises a dye-receiving resin and a binder resin; the dye receiving resin is one of carboxyl type binary copolymer vinyl chloride-acetate resin, carboxyl type ternary copolymer vinyl chloride-acetate resin, vinyl chloride-melamine resin, acrylonitrile-styrene copolymer and PVP resin; the bonding resin is one of polyester, epoxy modified acrylic resin and polyurethane. This thermal dye sublimation is rendition membrane again, can make thermal transfer membrane not only guarantee high color concentration when being used for the soft mark printing of thermal dye sublimation, can also be directly with pattern heat-transfer seal to the metal substrate surface of not handling.
Description
Technical Field
The invention relates to the technical field of thermal transfer printing, in particular to a thermal sublimation retransfer film for a metal printing stock.
Background
The heat transfer film is a special printing film which is used for printing a pattern on the surface of a PET film in advance and transferring and attaching the pattern to the surface of a printing stock under the combined action of heating and pressure, and is often used for replacing a silk-screen printing technology because the heat transfer film can realize perfect color transition.
At present, no re-transfer film which can be directly transferred to a metal printing stock after thermal sublimation printing exists in the market, and the main reason is that 1. The thermal sublimation ribbon image printing needs a special dye receiving coating, otherwise, the dye receiving capability is poor, and the color concentration is very low. 2. The surface condition of the substrate of the printing stock is complex, a coating needs to be thermally transferred on the surface of the substrate in advance to improve the adhesive force of the surface of the printing stock, and then the thermal transfer of the pattern can be realized, so that the method has the defects of complicated operation process, high cost and the like.
Disclosure of Invention
The invention aims to provide a heat sublimation retransfer film for a metal printing stock.
The technical scheme for solving the technical problems is as follows:
the invention provides a heat sublimation transfer printing film for a metal printing stock, which comprises a substrate, a release layer arranged on the substrate and a dye receiving layer arranged on the release layer;
the components of the dye-receiving layer comprise a dye-receiving resin and a binding resin;
the dye receiving resin is one of carboxyl type binary copolymerization vinyl chloride-acetate copolymer, carboxyl type ternary copolymerization vinyl chloride-acetate copolymer, chloro-melamine resin, acrylonitrile-styrene copolymer and PVP resin; the bonding resin is one of polyester, epoxy modified acrylic resin and polyurethane.
Further, the dye receiving resin is carboxyl type ternary copolymer vinyl chloride-vinyl acetate resin; the bonding resin is polyester; the mass portion of the carboxyl type ternary polymerization vinyl chloride-vinyl acetate copolymer resin is 19 parts, and the mass portion of the polyester is 2-5 parts.
Further, in the carboxyl type ternary copolymer vinyl chloride-vinyl acetate copolymer, the molar mass ratio range of the vinyl chloride monomer to the vinyl acetate monomer is 80:20-90:10.
further, the components of the dye receiving layer also comprise an adhesion promoter, a liquid lubricant and an organic solvent; in the dye receiving layer, the adhesion promoter is 1-3 parts by mass, the liquid lubricant is 1-5 parts by mass, and the first organic solvent is 50-80 parts by mass.
Further, the adhesion promoter is a resin adhesion promoter, a silane coupling agent adhesion promoter or a titanate coupling agent adhesion promoter.
Further, the release layer comprises the following components of attaching resin and bonding resin;
the adhesive resin is one of chloroethylene-vinyl acetate copolymer, acrylic resin, chlorinated polyethylene resin, chlorinated polyvinyl chloride resin and chlorinated polyethylene resin; the adhesive resin is one of polyurethane resin, polyester resin and polycarbonate resin.
Further, the adhesive resin is a vinyl chloride-vinyl acetate copolymer; the adhesive resin is polyurethane resin; the mass portion of the chloroethylene-vinyl acetate copolymer is 10-80 parts, and the mass portion of the polyurethane resin is 2-5 parts.
Further, the release layer also comprises an anti-hydrolysis agent and a second organic solvent; the hydrolysis resistant agent is 1-5 parts by weight, and the second organic solvent is 50-80 parts by weight.
Further, the thickness of the dye receiving layer is 5-15 μm, and the thickness of the release layer is 1-5 μm.
Further, the base body is made of PET; the thickness of the substrate 1 is 20-125 μm, and the gram weight is 30-100g/m 2 。
The invention has the beneficial effects that:
(1) According to the thermal sublimation transfer film for the metal printing stock, the dye receiving resin is one of carboxyl type binary copolymer vinyl chloride-acetate copolymer resin, carboxyl type ternary copolymer vinyl chloride-acetate copolymer resin, chloro-melamine resin, acrylonitrile-styrene copolymer and PVP resin, wherein particularly the carboxyl type binary copolymer vinyl chloride-acetate copolymer resin and the carboxyl type ternary copolymer vinyl chloride-acetate copolymer resin can improve the adhesive force of the dye on the surface of the metal printing stock after the dye is transferred to the metal printing stock;
(2) According to the thermal sublimation transfer film for the metal printing stock, the dye receiving resin and the bonding resin are used as the components of the dye receiving layer, so that the dye receiving layer can receive dye well, and the dye receiving layer and the release layer have good interlayer adhesion;
(3) The heat sublimation re-transfer film for the metal printing stock ensures that the dye receiving layer cannot be peeled off from the base material under the condition of high-speed printing by using the attaching resin and the bonding resin. Meanwhile, the dye receiving layer is helped to be smoothly separated from the base material to the surface of the metal printing stock during thermal transfer printing;
(4) The heat sublimation transfer printing film for the metal printing stock can ensure high color concentration when being used for heat sublimation soft label printing, and can directly transfer the pattern to the surface of the untreated metal base material.
Drawings
Fig. 1 is a schematic view of the structure of each layer of the thermal sublimation retransfer film for metal printing material of the invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a base; 2. a release layer; 3. a dye-receiving layer.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the thermal sublimation retransfer film for metal printing stocks of the invention comprises a substrate 1, a release layer 2 arranged on the substrate 1 and a dye receiving layer 3 arranged on the release layer 2; the composition of the dye-receiving layer 3 includes a dye-receiving resin, a binder resin; wherein the dye receiving resin is one of carboxyl type binary copolymer vinyl chloride-acetate resin, carboxyl type ternary copolymer vinyl chloride-acetate resin, vinyl chloride copolymer, acrylonitrile-styrene copolymer and PVP resin; the bonding resin is one of polyester, epoxy modified acrylic resin and polyurethane.
According to the thermal sublimation re-transfer film, the dye receiving resin and the bonding resin are used as the components of the dye receiving layer 3, so that the adhesive force of the dye on the surface of a metal printed matter after the dye is transferred to the metal printed matter can be improved. Can also ensure that the dye receiving layer 3 can receive dye well and has good interlayer adhesion with the release layer 2.
The heat sublimation re-transfer film is particularly suitable for soft label printing.
The dye receiving layer 3 provided by the invention has the main functions of receiving dye in the process of printing images on the thermal sublimation color band, has good coloring capacity, has better interlayer adhesion with the release layer 2, and is not easy to peel.
Preferably, the dye-receiving resin is carboxyl type ternary copolymer vinyl chloride-vinyl acetate resin, and the molar mass ratio range of vinyl chloride monomer to vinyl acetate monomer in the carboxyl type ternary copolymer vinyl chloride-vinyl acetate resin is 80:20-90:10; in the carboxyl-type ternary copolymer vinyl chloride-acetate copolymer, the ternary vinyl chloride-acetate copolymer contains polar groups, and hydroxyl or carboxyl can be coordinated with metal to form chemical bonds, so that the adhesive force between the dye receiving layer 3 and a metal printing stock is increased; therefore, the dye-receiving layer 3 of the present invention is more suitable for a metal substrate than other materials such as a glass substrate.
Preferably, the binding resin is polyester; the polyester can exhibit excellent adhesion, and has excellent flexibility, bendability, applicability, corrosion resistance, durability, heat resistance, and solvent solubility.
Preferably, the adhesion promoter is a resin adhesion promoter, a silane coupling agent adhesion promoter, a titanate coupling agent adhesion promoter, an organic polymer compound or other products.
The adhesion promoter can improve the binding force between the dye receiving layer 3 and the metal printing stock and the release layer 2.
In the thermal sublimation printing process, the thermal sublimation ribbon is in contact with the dye receiving layer 3, and the dye is transferred onto the dye receiving layer 3 by heating. However, the heating easily causes the problem that the resin component of the dye-receiving layer 3 is melted to cause adhesion, and the problem that the dye-receiving layer 3 sticks the ink ribbon reversely when the pattern is printed may also occur. Thus, the dye-receiving layer 3 of the present invention incorporates a slip agent, optionally a solid or liquid slip agent.
Preferably, liquid silicone oil is used as slip agent. In order not to affect the adhesion of the re-transfer film of the present invention to the metal substrate, it is further preferable that epoxy modified organosiloxane be used as a slip agent, or silicone oil with a reactive group be cross-linked with epoxy resin and cured.
The first organic solvent of the dye-receiving layer 3 is not particularly limited as long as the resin component is soluble in an appropriate organic solvent and has a viscosity of 100 to 500mPa · s or less at 25 ℃. For example, the first organic solvent may be selected from acetone, 2-butanone, cyclohexanone, ethyl acetate, butyl acetate, propyl acetate, toluene, xylene, DMF, and the like.
Further preferably, the first organic solvent is a mixed solution of 2-butanone and toluene, and the mass ratio of 2-butanone to toluene is controlled between 8.
Preferably, the dye receiving layer 3 comprises, by mass, 19 parts of carboxyl type ternary copolymer vinyl chloride-acetate copolymer, 2-5 parts of polyester, 1-3 parts of adhesion promoter, 1-5 parts of liquid lubricant and 50-80 parts of first organic solvent.
Preferably, the thickness of the dye-receiving layer 3 is 5 to 15 μm; further preferably, the thickness of the dye-receiving layer 3 is 5 to 10 μm.
The release layer 2 of the present invention mainly functions to impart a certain adhesion to the dye-receiving layer 3 during thermal sublimation printing.
The release layer 2 comprises the following components of attaching resin and bonding resin; the adhesive resin is one of chloroethylene-vinyl acetate copolymer, acrylic resin, chloro-melamine resin, high chlorinated polyethylene resin, chlorinated polyvinyl chloride resin and chlorinated polyethylene resin; the adhesive resin is one of polyurethane resin, polyester resin and polycarbonate resin; it can be ensured that the dye-receiving layer 3 does not peel off from the substrate 1 in the case of high-speed printing. Meanwhile, the dye receiving layer 3 is helped to be smoothly separated from the base material 1 to the surface of the metal printing stock during thermal transfer printing.
Preferably, the adhering resin is a vinyl chloride-vinyl acetate copolymer; the dye-receiving layer 3 can be favorably adhered to the base material 1, and can be smoothly peeled off at the time of transfer.
Preferably, in the vinyl chloride-vinyl acetate copolymer, the molar mass ratio of the vinyl chloride monomer to the vinyl acetate monomer is in the range of 80:20-90:10.
preferably, the binder resin is a polyurethane resin; the polyurethane has the excellent characteristics of high tension, high tensile force, toughness and aging resistance, and is a mature environment-friendly material. Has the characteristics of high strength, good toughness, wear resistance, cold resistance, oil resistance, aging resistance, weather resistance and the like which cannot be compared with other plastic materials.
Because the polyurethane resin is coated on the film surface to memorize and absorb water shrinkage under the environment of high temperature and high humidity, the storage property of the polyurethane resin is improved, and an anti-hydrolysis agent is required to be added.
Preferably, the mass portion of the anti-hydrolysis agent is 1 to 2.5; if the addition amount of the hydrolysis resistant agent is too small, the storage property is not obviously improved, and if the addition amount is too large, the cost is too high and the hydrolysis resistance is not obviously improved.
The kind of the second organic solvent is not particularly limited as long as the resin component of the release layer 2 is soluble in an appropriate organic solvent and has a viscosity of 100 to 500mPa · s or less at 25 ℃. For example, the organic solvent may be selected from acetone, 2-butanone, cyclohexanone, ethyl acetate, butyl acetate, propyl acetate, toluene, xylene, DMF, etc. The mass portion of the second organic solvent is 50-80.
Preferably, the second organic solvent is a mixed solution of 2-butanone and toluene, and the ratio of 2-butanone to toluene is controlled between 8.
Preferably, the thickness of the release layer 2 is 1-5 μm; further preferably, the thickness of the release layer 2 is 1 to 3 μm.
The base body 1 is made of PET; the material is common material for package printing in the market.
Preferably, the thickness of the matrix 1 is 20-125 μm and the gram weight is 30-100g/m 2 。
The technical solution of the present invention is illustrated by the following specific examples:
example 1:
in the retransfer film of the present example, the substrate 1 had a thickness of 50 μm and a grammage of 35g/m 2 The PET film of (1) is a Guangdong Shuming product.
The release layer 2 comprises the following specific components in parts by weight: 19 parts of binary vinyl chloride-vinyl acetate copolymer (SOLBIN-C Nissan chemical), 2 parts of polyurethane (R-6835 Hunan Jinliyuan), 0.5 part of hydrolysis-resistant stabilizer (S-7000 Beijing Baisui chemical), 39.25 parts of 2-butanone and 39.25 parts of toluene. The coating was applied using a gravure coater, and the thickness of the coating was 2 μm.
The dye receiving layer 3 comprises the following specific components in parts by weight: 10 parts of polyester (670 Japan Toyobo), 15 parts of carboxyl type ternary copolymer vinyl chloride-vinyl acetate copolymer (SOLBIN-M5 Nissan chemical), 5 parts of polyurethane (R-6835 Hunan Jinli source), 1 part of adhesion promoter (Addbond 2325 Digao chemical), 0.5 part of epoxy modified organic silicon oil (KF-105 Xinyue organic silicon), 34.25 parts of 2-butanone and 34.25 parts of toluene. The coating was applied using a gravure coater, and the thickness of the coating was 8 μm.
Example 2
In the retransfer film of the present example, the substrate 1 had a thickness of 50 μm and a grammage of 35g/m 2 The PET film of (1) is a Guangdong Shuming product.
The release layer 2 comprises the following specific components in parts by weight: 19 parts of binary vinyl chloride-vinyl acetate copolymer (H15/42 German watt-k), 2 parts of polyurethane (TPU-5778 Luborun), 1.5 parts of hydrolysis-resistant stabilizer (S-7000 Beijing Baisui chemical industry), 38.75 parts of 2-butanone and 38.75 parts of toluene. The coating was applied using a gravure coater, the thickness of the coating being 2 μm.
The protocol for the dye-receiving layer 3 was consistent with example 1.
Example 3
Re-rotation of the present embodimentThe printing film is used for the substrate 1 with the thickness of 50 mu m and the gram weight of 35g/m 2 The PET film of (1) is a Guangdong Shuming product.
The release layer 2 was applied in accordance with example 1.
The specific components and parts by weight of the dye receiving layer 3 are as follows: 20 parts of ternary vinyl chloride-vinyl acetate copolymer (H15/45M German Wake), 5 parts of acrylic modified epoxy resin (A-102 synergetic new material), 1 part of polyisocyanate curing agent (MHG-80B Asahi Kangdus), 0.3 part of plasticizer (A110 Moheng chemical industry), 0.5 part of epoxy modified organic silicon oil (KF-105 Xinyu organosilicon), 36.6 parts of 2-butanone and 36.6 parts of toluene. The coating was applied using a gravure coater, and the thickness of the coating was 8 μm.
Example 4
In the retransfer film of the present example, the substrate 1 had a thickness of 50 μm and a grammage of 35g/m 2 The PET film of (1) is a Guangdong Shuming product.
The release layer 2 was prepared in accordance with example 2.
The dye receiving layer 3 comprises the following specific components in parts by weight: 15 parts of polyester (670 Japan Toyobo), 15 parts of vinyl chloride-vinyl acetate copolymer (CP 450 Korea), 5 parts of polyurethane (901H Wanhua chemical), 1 part of adhesion promoter (Addbond 2325 Korea chemical), 0.5 part of epoxy modified silicone oil (KF-105 Xinyu silicone), 31.75 parts of 2-butanone, and 31.75 parts of toluene. The coating was applied using a gravure coater, and the thickness of the coating was 8 μm.
Example 5
In the retransfer film of the present example, the substrate 1 had a thickness of 50 μm and a grammage of 35g/m 2 The PET film of (1) is a Guangdong Shuming product.
The release layer 2 protocol was consistent with example 1.
The dye receiving layer 3 comprises the following specific components in parts by weight: 15 parts of carboxyl type ternary copolymer vinyl chloride-vinyl acetate copolymer (SOLBIN-M5 IKAI chemical), 6 parts of epoxy modified acrylic resin (SWA 5101 Kunshan Sanwang resin Co., ltd.), 5 parts of polyurethane (901H Wanhua chemical), 1 part of adhesion promoter (LTH Di Kao chemical), 0.3 part of polyethylene wax (BYK-991 German Bike), 0.3 part of dispersant (BYK-163 German Bike), 36.2 parts of 2-butanone and 36.2 parts of toluene. The coating was applied using a gravure coater, and the thickness of the coating was 8 μm.
Comparative example 1
In the retransfer film of this comparative example, the substrate 1 had a thickness of 50 μm and a grammage of 35g/m 2 The PET film of (1) is a Guangdong Shuming product.
Without the release layer 2 and the dye receiving layer 3.
Comparative example 2
In the retransfer film of comparative example 1, the substrate 1 had a thickness of 50 μm and a grammage of 35g/m 2 The PET film of (1) is a Guangdong Shuming product.
Comparative example 3
In the retransfer film of comparative example 1, the substrate 1 had a thickness of 50 μm and a grammage of 35g/m 2 The PET film of (1) is a Guangdong Shuming product.
The release layer 2 comprises the following specific components in parts by weight: 19 parts of vinyl chloride-vinyl acetate copolymer (MLC-14-55 Pangao chemical), 40.5 parts of 2-butanone and 40.5 parts of toluene. The coating was applied using a gravure coater, the thickness of the coating being 2 μm.
The dye-receiving layer 3 was identical to example 1.
Comparative example 4
In the retransfer film of comparative example 1, the substrate 1 had a thickness of 50 μm and a grammage of 35g/m 2 The PET film of (1) is a Guangdong Shuming product.
The dye receiving layer 3 comprises the following specific components in parts by weight: 20 parts of ternary chlorine vinegar (H15/45M German Wake), 0.3 part of plasticizer (A110 Henren chemical industry), 0.5 part of epoxy modified organic silicon oil (KF-105 Xinyue organic silicon), 39.6 parts of 2-butanone and 39.6 parts of toluene. The coating was applied using a gravure coater to a thickness of 8 μm.
Comparative example 5
In the retransfer film of comparative example 1, the substrate 1 had a thickness of 50 μm and a grammage of 35g/m 2 The PET film of (1) is a Guangdong Shuming product.
The release layer 2 comprises the following specific components in parts by weight: 20 parts of polyurethane (R-6835 Hunan Jinliyuan), 0.5 part of hydrolysis-resistant stabilizer (S-7000 Beijing Baisui chemical industry), 39.75 parts of 2-butanone and 39.75 parts of toluene. The coating was applied using a gravure coater, the thickness of the coating being 2 μm.
The dye-receiving layer 3 was identical to example 1.
The re-transfer films of the above examples and comparative examples were subjected to performance tests, and specific performance test protocols were as follows, and the results of the tests are shown in tables 1 and 2.
The printing test was performed using a DNP DS620 dye sublimation printer, the ink ribbon was a DNP DS620 original ink ribbon, the printing test was performed using a coated retransfer film, the color density test pattern was a 255-tone image, the color uniformity test pattern was a 150-tone image, and the size of the print was 6 × 6 inches. The printing was performed using an Alice 1-PRO3 colorimeter for color density, which was an average of 256 dots. The transfer printing is carried out by hot pressing the surface of the metal substrate at a high temperature of 140-180 ℃.
Adhesion test the adhesion test was carried out using a german BYK-white lattice knife, the rating being according to the ISO 2409 cross-hatch test standard as follows:
0: the cutting edge is completely smooth; none of the cells fell off.
1: there was some coating peeling at the cut intersections. The cross-cut area is affected by no more than 5%.
2: the coating is stripped at the cutting edge and/or the intersection. The affected cutting area is greater than 5% but less than 15%.
3: the coating is partly or wholly broken off in large pieces along the cut edges and/or partly or wholly broken off at different parts of the grid. The affected cut area is greater than 15% but less than 35%.
4: the coating is broken off along the cut edge in large pieces and/or some of the lattices are partly or wholly broken off. The affected cutting area is greater than 35%, but less than 65%.
5: any degree of shedding beyond grade 4.
The friction resistance test refers to GB17497.1-2012.
An MCJ-01A friction tester independently developed and produced by the Minnan Languang electromechanical technology Limited company tests the wear resistance of a sample. The rubbing pressure was 20. + -. 0.2N, the rubbing speed was 43 times/min, and the number of rubbing times was 40 times. The abrasion resistance of the sample was judged by visual inspection, and the judgment criteria were as follows:
v: the printing surface ink layer has no exposed bottom (fading) or no dyeing on the rubbing paper surface;
x: the printing surface ink layer has exposed bottom (fading) or is dyed on rubbing paper surface.
The solvent rub resistance test criteria are as follows:
cotton gauze was tied to the bottom of the jig with a 1.0kg weight, dipped in 95% alcohol, and then the printed pattern was reciprocated 300 times with the cotton gauze. The optical density before and after solvent friction is tested by an Aichrili 1-PRO3 color difference meter, the ratio of the optical density after test to the optical density before test is calculated, and the judgment standard is as follows:
v: the optical density after the test/the optical density before the test is more than or equal to 0.8;
x: the optical density after the test/the optical density before the test is less than 0.8;
the optical density is the optical density absorbed by the object to be detected.
TABLE 1 results of performance testing of examples 1-5
TABLE 2 results of the Performance test of comparative examples 1 to 5
As can be seen from the above test results, each of the performances of examples 1 to 5 is significantly superior to those of comparative examples 1 to 5.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A thermal sublimation transfer printing film for a metal printing stock comprises a substrate (1), a release layer (2) arranged on the substrate (1) and a dye receiving layer (3) arranged on the release layer (2); it is characterized in that the preparation method is characterized in that,
the composition of the dye-receiving layer (3) comprises a dye-receiving resin and a binder resin;
the dye receiving resin is one of carboxyl type binary copolymerization vinyl chloride-acetate copolymer, carboxyl type ternary copolymerization vinyl chloride-acetate copolymer, chloro-melamine resin, acrylonitrile-styrene copolymer and PVP resin; the bonding resin is one of polyester, epoxy modified acrylic resin and polyurethane.
2. The dye-sublimation retransfer film for a metal substrate according to claim 1, wherein the dye-receiving resin is a carboxyl type terpolymerization vinyl chloride-acetate resin; the bonding resin is polyester; the mass portion of the carboxyl type ternary copolymerized vinyl chloride-acetate copolymer is 19 portions, and the mass portion of the polyester is 2-5 portions.
3. The thermal sublimation retransfer film for a metal printing material according to claim 2, wherein in the carboxyl-type ternary copolymer vinyl chloride-vinyl acetate copolymer, the molar mass ratio of vinyl chloride monomer to vinyl acetate monomer is in the range of 80:20-90:10.
4. the dye-sublimation retransfer film for a metal substrate according to claim 2, wherein the composition of the dye-receiving layer (3) further comprises an adhesion promoter, a liquid slip agent and an organic solvent; in the dye receiving layer (3), by mass, 1-3 parts of the adhesion promoter, 1-5 parts of the liquid lubricant and 50-80 parts of the first organic solvent are used.
5. The thermal sublimation retransfer film for a metal substrate according to claim 4, wherein the adhesion promoter is a resin-based adhesion promoter, a silane coupling agent-based adhesion promoter, or a titanate coupling agent-based adhesion promoter.
6. The film according to any one of claims 1-5, wherein the release layer (2) comprises an adhesive resin and a binder resin;
the adhesive resin is one of chloroethylene-vinyl acetate copolymer, acrylic resin, chlorinated polyethylene resin, chlorinated polyvinyl chloride resin and chlorinated polyethylene resin; the adhesive resin is one of polyurethane resin, polyester resin and polycarbonate resin.
7. The thermal sublimation retransfer film for a metal substrate of claim 6, wherein the adhering resin is a vinyl chloride-vinyl acetate copolymer; the adhesive resin is polyurethane resin; the mass portion of the chloroethylene-vinyl acetate copolymer is 10-80 parts, and the mass portion of the polyurethane resin is 2-5 parts.
8. The heat sublimation retransfer film for a metal substrate according to claim 7, wherein the composition of the release layer (2) further comprises an anti-hydrolysis agent and a second organic solvent; in the release layer (2), the mass parts of the components are respectively 1 part-5 parts of the anti-hydrolysis agent and 50 parts-80 parts of the second organic solvent.
9. The film according to any one of claims 1-5, wherein the dye-receiving layer (3) has a thickness of 5-15 μm and the release layer (2) has a thickness of 1-5 μm.
10. The film according to any one of claims 1-5, wherein the substrate (1) is made of PET; the thickness of the substrate 1 is 20-125 μm, and the gram weight is 30-100g/m 2 。
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| CN202211537960.2A CN115972798A (en) | 2022-12-01 | 2022-12-01 | Thermal sublimation transfer film for metal printing stock |
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| CN202211537960.2A CN115972798A (en) | 2022-12-01 | 2022-12-01 | Thermal sublimation transfer film for metal printing stock |
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