阅读说明：本技术 一种真空热转印花膜 (Vacuum heat transfer printing flower film ) 是由 朱宏达 洪苗苗 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种真空热转印花膜,其技术方案要点包括基底层,所述基底层的一侧设置有耐紫外线涂层,另一侧依次向外层叠结合有离型层、油墨层、热熔胶层；所述油墨层根据图案的不同可以设置有N层,其中,N的取值范围满足：1≤N≤10；所述耐紫外线涂层包括有机树脂连接料、碳黑、溶剂；所述有机树脂连接料与碳黑之间的质量比为1/3～1/2；所述有机树脂连接料与溶剂之间的质量比为1/5～1/3；所述碳黑与溶剂之间的质量比为3/5～2/3；所述溶剂为乙酸乙酯、乙酸正丙酯、乙酸丁酯中的一种或多种,本发明具有拉伸性能优异,真空烫印时紫外灯照射下图案不会变色,成品图案牢固度强,具有耐刮擦、耐酸碱、耐溶剂等有益效果。(The invention discloses a vacuum heat transfer printing flower film, which adopts the technical scheme that the vacuum heat transfer printing flower film comprises a substrate layer, wherein one side of the substrate layer is provided with an ultraviolet-resistant coating, and the other side of the substrate layer is sequentially combined with a release layer, an ink layer and a hot melt adhesive layer in an outward stacking manner; the printing ink layer can be provided with N layer according to the difference of pattern, wherein, N's value range satisfies: n is more than or equal to 1 and less than or equal to 10; the ultraviolet-resistant coating comprises an organic resin binder, carbon black and a solvent; the mass ratio of the organic resin binder to the carbon black is 1/3-1/2; the mass ratio of the organic resin binder to the solvent is 1/5-1/3; the mass ratio of the carbon black to the solvent is 3/5-2/3; the solvent is one or more of ethyl acetate, n-propyl acetate and butyl acetate, and the invention has the advantages of excellent tensile property, no color change of patterns under the irradiation of an ultraviolet lamp during vacuum thermoprint, strong pattern firmness of finished products, scratch resistance, acid and alkali resistance, solvent resistance and the like.)

1. A vacuum heat transfer printing flower film comprises a substrate layer, and is characterized in that: one side of the substrate layer is provided with an ultraviolet-resistant coating, and the other side of the substrate layer is sequentially combined with a release layer, an ink layer and a hot melt adhesive layer in an outward laminated manner; the printing ink layer is provided with N layer, wherein, N's value range satisfies: n is more than or equal to 1 and less than or equal to 10.

2. The vacuum heat transfer decal film of claim 1, wherein: the ultraviolet-resistant coating comprises an organic resin binder, carbon black and a solvent; the mass ratio of the organic resin binder to the carbon black is 1/3-1/2; the mass ratio of the organic resin binder to the solvent is 1/5-1/3; the mass ratio of the carbon black to the solvent is 3/5-2/3.

3. The vacuum heat transfer decal film of claim 2, wherein: the solvent is one or more of ethyl acetate, n-propyl acetate and butyl acetate.

4. The vacuum heat transfer decal film of claim 1, wherein: the release layer comprises acrylic resin, a plasticizer and a solvent; the plasticizer accounts for 1-5% of the total mass of the release layer; the mass ratio of the plasticizer to the solvent is 1/65-1/15; the solvent is ethyl acetate or toluene.

5. The vacuum heat transfer decal film of claim 1, wherein: the ink layer comprises an organic resin binder, a pigment and a solvent; the mass ratio of the organic resin binder to the pigment is 1/3-3/4; the mass ratio of the organic resin binder to the solvent is 1/3-1/2; the mass ratio of the pigment to the solvent is 1/1-2/3.

6. The vacuum heat transfer decal film of claim 5, wherein: the solvent is one or more of ethyl acetate, n-propyl acetate, butyl acetate, isopropanol and propylene glycol methyl ether.

7. The vacuum heat transfer decal film of claim 1, wherein: the hot melt adhesive layer comprises 15-20% of acrylic resin, 1-5% of plasticizer, 5-10% of tackifier and 60-70% of solvent by mass ratio; the solvent is n-propyl acetate or ethyl acetate or a mixture of the two.

8. The vacuum heat transfer decal film of claim 1, wherein: the base layer is a cpp film.

Technical Field

The invention relates to the technical field of new printing materials of cultural products and preparation thereof, in particular to a vacuum heat transfer printing flower film.

Background

The thermal transfer printing film is a special functional printing film which is provided with pictures and texts with adhesive, is separated from the carrier film together with the release layer under the combined action of heat and pressure, and is firmly transferred to the surface of a printing stock; in the use process of the traditional thermal transfer printing film, the shape limitation of a printing stock is large, the flower film cannot be used on the printing stock with an irregular shape, the common printing stock can only be flat plates or cups and the like, the surfaces of the printing stock are smooth, and the printing stock can not be transferred temporarily when the printing stock has a curved edge or the irregular shape.

The vacuum thermal transfer printing is to vacuumize the space between the surface of a workpiece and a pad pasting to enable the pad pasting to be tightly attached to a printing stock, compared with the traditional thermal transfer printing, the vacuum thermal transfer printing can realize hot stamping on irregular printing stocks such as a curved surface, the requirement on the shape of the printing stock is not high, the speed is higher, and a heating module and a pressing module can be separated; vacuum heat-transfer seal flower membrane needs to have the ability that resistant ultraviolet lamp shines for traditional stamp membrane to guarantee that the pattern can not discolour under the ultraviolet lamp shines during vacuum thermoprint, need have good tensile properties simultaneously, adapt to the stock of different shapes.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the vacuum heat transfer printing flower film which has the advantages of excellent tensile property, no color change of patterns under the irradiation of an ultraviolet lamp during vacuum hot stamping, strong pattern firmness of finished products, scratch resistance, acid and alkali resistance, solvent resistance and the like.

In order to achieve the purpose, the invention provides the following technical scheme: a vacuum heat transfer printing flower film comprises a substrate layer, and is characterized in that: one side of the substrate layer is provided with an ultraviolet-resistant coating, and the other side of the substrate layer is sequentially combined with a release layer, an ink layer and a hot melt adhesive layer in an outward laminated manner; the printing ink layer is provided with N layer, wherein, N's value range satisfies: n is more than or equal to 1 and less than or equal to 10.

The invention is further configured to: the ultraviolet-resistant coating comprises an organic resin binder, carbon black and a solvent; the mass ratio of the organic resin binder to the carbon black is 1/3-1/2; the mass ratio of the organic resin binder to the solvent is 1/5-1/3; the mass ratio of the carbon black to the solvent is 3/5-2/3.

The invention is further configured to: the solvent is one or more of ethyl acetate, n-propyl acetate and butyl acetate.

The invention is further configured to: the release layer comprises acrylic resin, a plasticizer and a solvent; the plasticizer accounts for 1-5% of the total mass of the release layer; the mass ratio of the plasticizer to the solvent is 1/65-1/15; the solvent is ethyl acetate or toluene.

The invention is further configured to: the ink layer comprises an organic resin binder, a pigment and a solvent; the mass ratio of the organic resin binder to the pigment is 1/3-3/4; the mass ratio of the organic resin binder to the solvent is 1/3-1/2; the mass ratio of the pigment to the solvent is 1/1-2/3.

The invention is further configured to: the solvent is one or more of ethyl acetate, n-propyl acetate, butyl acetate, isopropanol and propylene glycol methyl ether.

The invention is further configured to: the hot melt adhesive layer comprises 15-20% of acrylic resin, 1-5% of plasticizer, 5-10% of tackifier and 60-70% of solvent by mass ratio; the solvent is n-propyl acetate or ethyl acetate or a mixture of the two.

The invention is further configured to: the base layer is a cpp film.

In conclusion, the invention has the following beneficial effects: compared with the common heat transfer printing film, the vacuum heat transfer printing film has better ultraviolet irradiation resistance, thereby ensuring that the pattern does not change color under the irradiation of an ultraviolet lamp during vacuum hot stamping; meanwhile, because the proportions of the components of the layers are different, the pattern firmness of the finished product after hot stamping is excellent, and the pattern has the beneficial effects of scratch resistance, acid and alkali resistance and solvent resistance.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

reference numerals: 1. a base layer; 2. an ultraviolet resistant coating; 3. a release layer; 4. an ink layer; 5. a hot melt adhesive layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment discloses a vacuum heat transfer printing film, as shown in fig. 1, has excellent tensile property, and the pattern can not change color under the irradiation of an ultraviolet lamp during vacuum thermoprinting, and the finished product has strong pattern firmness, and has the beneficial effects of scratch resistance, acid and alkali resistance, solvent resistance and the like.

The ultraviolet-resistant coating comprises a substrate layer 1, wherein an ultraviolet-resistant coating layer 2 is arranged on one side of the substrate layer 1, and a release layer 3, an ink layer 4 and a hot melt adhesive layer 5 are sequentially laminated outwards on the other side of the substrate layer; the printing ink layer 4 can be provided with N layers according to the difference of patterns, wherein, the value range of N satisfies: n is more than or equal to 1 and less than or equal to 10.

The ultraviolet-resistant coating 2 comprises an organic resin binder, carbon black and a solvent; the mass ratio of the organic resin binder to the carbon black is 1/3-1/2; the mass ratio of the organic resin binder to the solvent is 1/5-1/3; the mass ratio of the carbon black to the solvent is 3/5-2/3.

The solvent is one or more of ethyl acetate, n-propyl acetate and butyl acetate.

The carbon black can absorb ultraviolet rays, so that the service life of the product is prolonged.

The release layer 3 comprises acrylic resin, a plasticizer and a solvent; the plasticizer accounts for 1-5% of the total mass of the release layer 3; the mass ratio of the plasticizer to the solvent is 1/65-1/15; the solvent is ethyl acetate or toluene.

The ink layer 4 comprises an organic resin binder, a pigment and a solvent; the mass ratio of the organic resin binder to the pigment is 1/3-3/4; the mass ratio of the organic resin binder to the solvent is 1/3-1/2; the mass ratio of the pigment to the solvent is 1/1-2/3.

The solvent is one or more of ethyl acetate, n-propyl acetate, butyl acetate, isopropanol and propylene glycol methyl ether.

The hot melt adhesive layer 5 comprises 15-20% of acrylic resin, 1-5% of plasticizer, 5-10% of tackifier and 60-70% of solvent by mass ratio; the solvent is n-propyl acetate or ethyl acetate or a mixture of the two.

The base layer 1 is a cpp film.

A method for producing a vacuum heat transfer printing flower film comprises the following steps:

the CPP film is coated with a release layer 3 with excellent tensile property through gravure printing, is dried through a drying tunnel at 90 ℃, then is coated with an ink layer 4 below the release layer 3 through gravure printing, the ink layer 4 can have 1-10 layers according to pattern requirements, the printing speed is 80-150 m/min, and is dried, a hot melt adhesive layer 5 is coated behind the ink layer 4, and the drying is carried out. And the ultraviolet lamp irradiation resistant layer is coated on the other side of the cpp film, which is opposite to the release layer 3, and is dried in a drying tunnel at the temperature of 90 ℃.

The vacuum heat transfer printing film cannot be damaged when the pattern is scratched back and forth for 50 times by using a 2B pencil along the surface of the printing film in the using process, and meanwhile, the vacuum heat transfer printing film is wiped for 50 times under the pressure of 1kg of weight under the alcohol concentration of 75 percent, and the phenomenon that ink becomes light or falls off is not seen.

Has the advantages that: compared with the common heat transfer printing film, the vacuum heat transfer printing film has better ultraviolet irradiation resistance, thereby ensuring that the pattern does not change color under the irradiation of an ultraviolet lamp during vacuum hot stamping; meanwhile, because the proportions of the components of the layers are different, the pattern firmness of the finished product after hot stamping is excellent, and the pattern has the beneficial effects of scratch resistance, acid and alkali resistance and solvent resistance.

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 made within the design concept of the present invention should be included in the scope of the present invention.