阅读说明：本技术 一种仿古铜拉丝pet转印膜及其制备方法和承印物 (Antique copper wire drawing PET transfer film, preparation method thereof and printing stock ) 是由 霍虾 霍浩麟 霍丽仙 关旭光 范海坚 吴顺卫 叶健能 麦惠贤 庞健棉 刘静仪 张 于 2020-12-30 设计创作，主要内容包括：本发明公开一种仿古铜拉丝PET转印膜及其制备方法和承印物,所述仿古铜拉丝PET转印膜由上至下依次包括PET基材层、离型层、印刷层；所述印刷层由上至下依次金属拉丝层和底色层；所述底色层和离型层采用热转印升华油墨制成；所述金属拉丝层采用热压转印油墨制成。采用本发明所提供的仿古铜拉丝PET转印膜,通过热转印工艺将图案转印至金属承印物表面,可以使承印物表面具有仿古铜拉丝效果,具有金属光泽和拉丝铜质感。采用此仿古铜拉丝PET转印膜,无需经过复杂的化学处理工艺,且对环境友好。(The invention discloses an antique copper wire drawing PET transfer film, a preparation method thereof and a printing stock, wherein the antique copper wire drawing PET transfer film sequentially comprises a PET substrate layer, a release layer and a printing layer from top to bottom; the printing layer is sequentially provided with a metal wire drawing layer and a ground color layer from top to bottom; the bottom color layer and the release layer are made of heat transfer sublimation ink; the metal wire drawing layer is made of hot-pressing transfer printing ink. By adopting the antique copper wire drawing PET transfer printing film provided by the invention, the pattern is transferred to the surface of the metal printing stock through a thermal transfer printing process, so that the surface of the printing stock has the antique copper wire drawing effect, and has metal luster and wire drawing copper texture. The antique copper wire drawing PET transfer film does not need a complex chemical treatment process and is environment-friendly.)

1. The antique copper wire drawing PET transfer film is characterized by comprising a PET substrate layer, a release layer and a printing layer from top to bottom in sequence; the printing layer is sequentially provided with a metal wire drawing layer and a ground color layer from top to bottom; the bottom color layer is made of heat transfer sublimation printing ink; the metal wire drawing layer is made of hot-pressing transfer printing ink.

2. The antique copper wire drawing PET transfer film according to claim 1, wherein the non-sublimation type heat transfer resin comprises the following components in parts by weight:

6-10 parts of polyester polyurethane, 10-14 parts of thermoplastic polyester elastomer, 1-3 parts of alkylphenol modified amino resin, 40-50 parts of butanone, 24-30 parts of n-propyl ester, 4-9 parts of methyl isobutyl ketone, 0.1-0.5 part of dispersant and 0.01-0.05 part of antioxidant.

3. The antique copper wire drawing PET transfer film according to claim 1, wherein the metal wire drawing layer is filled with metal powder accounting for 2-5% of the total weight of the thermal transfer sublimation ink.

4. The antique copper wire drawing PET transfer film according to claim 1, wherein the metal wire drawing texture is composed of a plurality of parallel wire drawing textures, and each wire drawing texture is different in color depth and different in distance.

5. The preparation method of the antique copper wire drawing PET transfer film according to any one of claims 1 to 4, which is characterized by comprising the following steps:

selecting a cylindrical gravure roller with metal wire drawing texture patterns, wherein the depth of the wire drawing texture on the cylindrical gravure roller is between 5 and 50 mu m;

setting cylindrical gravure rollers on a gravure printing machine according to the color sequence, and respectively pouring corresponding printing ink;

the viscosity of the ink is adjusted to be between 15 and 30 seconds for No. 3 cup, the temperature of a wind box of the gravure printing machine is between 70 and 140 ℃, and the production speed of the gravure printing machine is between 50 and 120 meters per minute;

the coiled PET base material is sent to a gravure printing machine in a traction manner, color register printing is started, and a release layer and a printing layer are printed on the PET base material;

and rolling the finished product to finish printing.

6. The printing stock is characterized in that the antique copper wire drawing PET transfer printing film according to any one of claims 1 to 4 is used for carrying out thermal transfer printing treatment on the printing stock, and a bottom color layer, a metal wire drawing layer and a release layer are sequentially attached to the printing stock.

7. The substrate according to claim 6, wherein the substrate is a metal substrate.

Technical Field

The invention relates to the field of thermal transfer printing, and mainly relates to an antique copper wire drawing PET transfer film, a preparation method thereof and a printing stock.

Background

The color of the bronze is mainly dark with gray, and the black is a light cyan bronze inner color, so that the bronze is old and cannot lose luster. Because the cost price of copper is high, at present adopt other metals to carry out physical processing or chemical processing and reach the effect of copper wire drawing modelled after an antique, copper wire drawing modelled after an antique effect is generally used in the gate of villa or house.

Stainless steel wire drawing is a metal processing technology, is the most popular surface treatment technology in the current stainless steel and aluminum product industry, and is wire drawing effect treatment on stainless steel products. Electroplating a layer of copper on the surface of the stainless steel plate, electroplating a colored black layer, polishing, drawing or rolling, and finally covering a layer of transparent coating to form a bronze color with elegant color and antique antiquity, wherein the process is also complex.

The production of the antique copper and bronze products can also adopt wet electroplating and chemical coloring methods, but the methods can generate heavy metal ion pollution which is seriously harmful to the environment and human bodies, consume water and electricity, consume a large amount of noble metal resources, have high production cost and complex process and are gradually limited in application. In addition, the surface smoothness of the antique copper and bronze film layers produced by the wet electroplating and electrochemical coloring methods is poor, the bonding fastness of the film layers and the substrate is low, and the requirements of high-end user groups on more exquisite and more reliable antique copper and bronze decorative film layers cannot be met.

Accordingly, the prior art is yet to be improved and developed.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide a antique copper drawn PET transfer film, a preparation method thereof and a printing stock, and aims to solve the problem that the existing antique copper drawn effect can only be obtained by electroplating or chemical coloring.

The technical scheme of the invention is as follows:

the antique copper wire drawing PET transfer film comprises a PET substrate layer, a release layer and a printing layer from top to bottom in sequence; the printing layer is sequentially provided with a metal wire drawing layer and a ground color layer from top to bottom; the bottom color layer is made of heat transfer sublimation printing ink; the metal wire drawing layer is made of hot-pressing transfer printing ink.

The antique copper wire drawing PET transfer printing film comprises the following components in parts by weight:

6-10 parts of polyester polyurethane, 10-14 parts of thermoplastic polyester elastomer, 1-3 parts of alkylphenol modified amino resin, 40-50 parts of butanone, 24-30 parts of n-propyl ester, 4-9 parts of methyl isobutyl ketone, 0.1-0.5 part of dispersant and 0.01-0.05 part of antioxidant.

The antique copper wire drawing PET transfer printing film is characterized in that metal powder accounting for 2-5% of the total weight of the heat transfer sublimation printing ink is filled in the metal wire drawing layer.

The antique copper wire drawing PET rendition membrane, metal wire drawing texture comprises many parallel wire drawing lines, and every wire drawing line colour depth is different, the interval is different.

The preparation method of the antique copper wire drawing PET transfer film comprises the following steps:

selecting a cylindrical gravure roller with metal wire drawing texture patterns, wherein the depth of the wire drawing texture on the cylindrical gravure roller is between 5 and 50 mu m;

setting cylindrical gravure rollers on a gravure printing machine according to the color sequence, and respectively pouring corresponding printing ink;

the viscosity of the ink is adjusted to be between 15 and 30 seconds for No. 3 cup, the temperature of a wind box of the gravure printing machine is between 70 and 140 ℃, and the production speed of the gravure printing machine is between 50 and 120 meters per minute;

the coiled PET base material is sent to a gravure printing machine in a traction manner, color register printing is started, and a release layer and a printing layer are printed on the PET base material;

and rolling the finished product to finish printing.

The printing stock is subjected to thermal transfer printing treatment on the printing stock by adopting the antique copper wire drawing PET transfer printing film, and a bottom color layer, a metal wire drawing layer and a release layer are sequentially attached on the printing stock.

The substrate, wherein the substrate is a metal substrate.

Has the advantages that: by adopting the antique copper wire drawing PET transfer printing film provided by the invention, the pattern is transferred to the surface of the metal printing stock through a heat transfer printing process, so that the surface of the printing stock has the antique copper wire drawing effect, has metal luster and wire drawing copper texture, and is high in simulation degree, the transfer printing film meets the transfer requirement by optimizing the structure of the transfer printing film and the combination of printing ink, and the printing layer can be completely and cleanly rotated without residue. By adopting the antique copper wire drawing PET transfer film, a complex chemical treatment process is not needed, the cost is low, the manufacture is convenient, the efficiency is high, and the environment is friendly.

Drawings

Fig. 1 is a schematic structural diagram of the antique copper wire drawing PET transfer film of the invention.

Fig. 2 is a schematic diagram illustrating an effect of a transferred object of a transfer film of a conventional structure.

Fig. 3 is a schematic view showing the effect of the printed matter after the transfer printing by the transfer paper of the conventional structure.

FIG. 4 is a schematic diagram showing the effect of the printed matter after the antique copper wire drawing PET transfer film is used for transfer printing.

Detailed Description

The invention provides an antique copper wire drawing PET transfer film, a preparation method thereof and a printing stock, and the invention is further described in detail below in order to make the purpose, the technical scheme and the effect of the invention clearer and more clear. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides an antique copper wire drawing PET transfer film which comprises a PET substrate layer 1, a release layer and a printing layer 2 from top to bottom in sequence as shown in figure 1; the printing layer 2 is sequentially provided with a metal wiredrawing layer 22 and a ground color layer 21 from top to bottom; the bottom color layer 21 is made of heat transfer sublimation printing ink; the metal wire drawing layer 22 is made of hot-pressing transfer printing ink, and metal powder accounting for 2-5% of the total weight of the thermal transfer sublimation printing ink is filled in the metal wire drawing layer 22. The effect of copper wire drawing has bronze, brass, bronze etc. according to the demand of difference, can adopt different metal powder, if: bronze, brass, etc.

The printing method adopts the combination of the non-sublimation hot-pressing transfer printing ink and the metal powder and combines the release layer, so that the printing layer 2 can be completely transferred to the printing stock, and no residue is left on the PET film. If the thermal sublimation ink and the metal powder are combined, the metal effect is not strong. The metal wire drawing layer 22 adopts non-sublimation type hot-pressing transfer printing ink, has adhesiveness, and can be directly adhered to the surface of a printing stock. Because the metal wire drawing layer 22 is made of the hot-pressing transfer printing ink without permeability, different from the thermal sublimation transfer printing ink, the metal wire drawing layer 22 can be left on the surface of a printing stock to show the three-dimensional metal wire drawing effect on the printing stock, and the metal wire drawing texture has metal luster and vivid effect. The base color layer 21 may be transparent or tinted, typically black or gray. The inks used for the release layer and the bottom color layer 21 are commercially available products, and are not described herein. The metal wire drawing texture is composed of a plurality of parallel wire drawing textures, the color depth of each wire drawing texture is different, the intervals are different, and the metal wire drawing texture is more vivid.

Generally, a PET transfer film using a thermal sublimation transfer ink includes only a PET substrate layer 1 and a printing layer 2. However, in order to obtain the effect of antique copper drawing, the printing layer 2 is divided into two layers, wherein one layer is a bottom color layer 21 and adopts thermal sublimation transfer printing ink, and the other layer is a metal drawing layer 22 and adopts non-sublimation thermal transfer printing resin, and the non-sublimation thermal transfer printing resin comprises the following components in parts by weight:

6-10 parts of polyester polyurethane, 10-14 parts of thermoplastic polyester elastomer, 1-3 parts of alkylphenol modified amino resin, 40-50 parts of butanone, 24-30 parts of n-propyl ester, 4-9 parts of methyl isobutyl ketone, 0.1-0.5 part of dispersant and 0.01-0.05 part of antioxidant.

The non-sublimation thermal transfer printing resin can be firmly adhered to a metal printing stock after transfer printing, and patterns can be completely transferred without remaining on the substrate layer.

The non-sublimation type thermal transfer printing resin is shaped in a high-temperature oven at the temperature of 160-210 ℃ for 15-30 minutes, and the metal wire drawing layer 22 and the bottom color layer 21 are completely adhered to the surface of the metal printing stock with the powder coating. If the metal wire layer 22 is made of conventional thermal sublimation ink, the surface of the substrate of the printing material cannot show a metallic copper luster with high simulation degree.

In addition, if the transfer film having the conventional structure is used, the printing layer 2 may not be completely transferred to the printing material, as shown in fig. 2. In order to transfer the printing layer 2 to the metal printing stock smoothly, the base material is changed into the paper film, and the release layer is added between the printing layers 2, so that although the printing layer 2 can be completely transferred to the printing stock, paper film scraps can be remained on the printing stock and cannot be completely separated, as shown in fig. 3. After a plurality of experiments, the inventor changes the combination of the PET substrate layer 1, the release layer and the printing layer 2 into the printing material, and the printing layer 2 can be completely transferred onto the printing stock, and the pattern has bright color and good metallic effect, as shown in figure 4.

The invention also provides a preparation method of the antique copper wire drawing PET transfer film, which comprises the following steps:

selecting a cylindrical gravure roller with metal wire drawing texture patterns, wherein the depth of the wire drawing texture on the cylindrical gravure roller is between 5 and 50 mu m;

setting cylindrical gravure rollers on a gravure printing machine according to the color sequence, and respectively pouring corresponding printing ink;

the viscosity of the ink is adjusted to be between 15 and 30 (No. 3 cup), the temperature of a wind box of the gravure printing machine is between 70 and 140 ℃, and the production speed of the gravure printing machine is between 50 and 120 meters per minute;

the coiled PET base material is sent to a gravure printing machine in a traction manner, color register printing is started, and a release layer and a printing layer are printed on the PET base material;

and rolling the finished product to finish printing.

In the preparation method, the corresponding cylindrical gravure roller and the corresponding printing ink are prepared according to the color sequence, the release layer is prepared firstly, then the metal wire drawing layer is prepared, and finally the bottom color layer is prepared. The depth of the metal wire drawing texture is selected to be between 5 and 50 micrometers, the color depth of each wire drawing texture is not achieved through the wire drawing texture of the cylindrical gravure roller with different depths, the deeper the depth, the more the color is deposited, the more the metal powder is, and the shallower the depth, the lighter the color is, the less the metal powder is deposited.

The invention also provides application of the antique copper wire drawing PET transfer film, and provides a printing stock of antique copper wire drawing, wherein a bottom color layer, a metal wire drawing layer and a release layer are sequentially attached to the printing stock from inside to outside. The printing stock is a metal printing stock, such as an aluminum alloy section, a stainless steel section, a steel plate and the like.

The invention provides a transfer printing method of an antique copper wire drawing PET transfer printing film, which comprises the following steps:

spraying powder coating on the surface of the metal printing stock;

wrapping the antique copper wire drawing PET transfer film on a metal printing stock;

vacuumizing, wherein the negative pressure of the vacuum is 0.1-0.8 mPa, heating to 170-210 ℃, and maintaining for 15-30 minutes; and tearing off the base material layer.

In particular, by spraying a powder coating, the ink layer can be well adhered to the metal substrate. As shown in fig. 1 to 3, the actual effect obtained by the above transfer method is different depending on the transfer film. The transfer time can be appropriately adjusted according to the size of the transfer area, the thickness of the substrate, and the like.

By adopting the antique copper wire drawing PET transfer printing film provided by the invention, the pattern is transferred to the surface of the metal printing stock through a heat transfer printing process, so that the surface of the printing stock has the antique copper wire drawing effect, has metal luster and wire drawing copper texture, and the transfer printing film meets the transfer requirement by optimizing the structure of the transfer printing film and the combination of printing ink. The antique copper wire drawing PET transfer film does not need a complex chemical treatment process and is environment-friendly.

The present invention is further illustrated by the following specific examples.

Example 1

Preparing an antique copper wire drawing PET transfer film:

selecting a cylindrical gravure roller with metal wire drawing texture patterns, wherein the depth of the wire drawing texture on the cylindrical gravure roller is between 5 and 50 mu m;

arranging cylindrical gravure rollers on an intaglio printing press according to a color sequence, respectively pouring corresponding printing ink, wherein the bottom color layer adopts commercial thermal sublimation transfer printing ink, and the metal wire drawing layer adopts non-thermal sublimation type thermal transfer printing resin; the non-thermal sublimation type thermal transfer printing resin comprises 8 parts by weight of polyester polyurethane, 12 parts by weight of thermoplastic polyester elastomer, 2 parts by weight of alkylphenol modified amino resin, 45 parts by weight of butanone, 26 parts by weight of n-propyl ester, 7 parts by weight of methyl isobutyl ketone, 0.3 part by weight of dispersant and 0.03 part by weight of antioxidant;

the viscosity of the ink is adjusted to be between 15 and 30 (No. 3 cup), the temperature of a wind box of the gravure printing machine is about 110 ℃, and the production speed of the gravure printing machine is about 80 m/min;

the coiled PET base material is sent to a gravure printing machine in a traction manner, color register printing is started, and a release layer and a printing layer are printed on the PET base material;

and rolling the finished product to finish printing.

Spraying a layer of powder coating on the surface of the aluminum profile, wrapping the antique copper wire drawing PET transfer film on a metal printing stock, vacuumizing, heating to about 190 ℃ under the vacuum negative pressure of 0.6mPa, maintaining for 20 minutes, and tearing off the base material layer.

After thermal transfer printing, the surface of the aluminum profile is as shown in fig. 3, the surface wood grain is clear and complete, and the aluminum profile has metallic luster and wiredrawing copper texture.

It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.