Preparation method of gradually-varied PET film

A kind of equipment and optical thin film technology, applied in the field of gradient PET film preparation, can solve the problems of natural transition, convex change, and inability to form gradient film effects, etc., and achieve multifunctional effects

Inactive Publication Date: 2020-12-08
苏州裕信宏塑料包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the shell is required to have a gradient effect to make the product look more beautiful, and the plastic material (such as PET) is originally a light-transmitting colorless product. The distance between the evaporation source of the vacuum coating equipment and the plastic material on the fixture in the vacuum chamber of the vacuum coating equipment Consistent, so that the vacuum coating method can not form a gradient film effect, only different color sub-area printing can be carried out on the surface of the PET film, so that a piece of PET film has multiple colors, however, this kind of gradient production method will make two There is no natural transition between colors, it will produce a convex effect, and the real color gradient effect cannot be achieved

Method used

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  • Preparation method of gradually-varied PET film
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  • Preparation method of gradually-varied PET film

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Effect test

Embodiment 1

[0036] see Figure 1-3 , in an embodiment of the present invention, a method for preparing a graded PET film, comprising the following steps: S1: flatten the PET film, and coat the PET film with a material layer having a refractive index;

[0037] S2: Prepare a UV transfer printing texture layer on the other side of the PET film;

[0038] S3: Depositing an optical film layer on the surface of the UV transfer texture layer;

[0039] S4: forming an optical film layer with a uniform thickness by chemical etching on the optical film layer;

[0040] S5: Spraying the coloring layer on the optical film layer;

[0041] S6: forming a laser effect layer by molding on the colored layer.

[0042] Preferably, in the step S1, the layer of material having a refractive index coated on the PET film is composed of alternating high refractive index material layers and low refractive index material layers.

[0043] Preferably, the high refractive index material layer and the low refractive in...

Embodiment 2

[0057] see figure 1 , figure 2 with Figure 4 , in an embodiment of the present invention, a method for preparing a graded PET film, comprising the following steps: S1: flatten the PET film, and coat the PET film with a material layer having a refractive index;

[0058] S2: Prepare a UV transfer printing texture layer on the other side of the PET film;

[0059] S3: Depositing an optical film layer on the surface of the UV transfer texture layer;

[0060] S4: forming an optical film layer with a uniform thickness by chemical etching on the optical film layer;

[0061] S5: Spraying the coloring layer on the optical film layer;

[0062] S6: forming a laser effect layer by molding on the colored layer.

[0063] Preferably, in the step S1, the layer of material having a refractive index coated on the PET film is composed of alternating high refractive index material layers and low refractive index material layers.

[0064] Preferably, the high refractive index material layer...

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Abstract

The invention discloses a preparation method of a gradually-varied PET film. The preparation method includes the following steps of: S1, flatly paving a PET film, and plating the PET film with a material layer with refractive index; S2, preparing a UV transfer-printed texture layer on the other surface of the PET film; S3, depositing an optical thin film layer on the surface of the UV transfer-printed texture layer; S4, forming an optical thin film layer of which the thickness is uniformly changed on the optical thin film layer through chemical corrosion; S5, spraying a coloring layer on the optical thin film layer; and S6, forming a laser effect layer on the coloring layer through mold pressing. According to the preparation method disclosed by the invention, the PET film is plated with the material layer with the refractive index, and the material layer with the refractive index consists of a material layer with a high refractive index and a material layer with a low refractive indexalternately; therefore, the obtained PET film achieves the effect of gradually changing colors by refracting light.

Description

technical field [0001] The invention relates to the technical field of PET film preparation, in particular to a preparation method of a graded PET film. Background technique [0002] Vacuum coating technology first appeared in the 1930s, industrial applications began to appear in the 1940s and 1950s, and industrial mass production began in the 1980s. It has been widely used in electronics, aerospace, packaging, decoration, hot stamping and printing industries. Vacuum coating refers to the deposition of a certain metal or metal compound on the surface of a material (usually a non-metallic material) in the form of vapor in a vacuum environment, which belongs to the physical vapor deposition process. Among all the materials to be plated, plastics are the most common. Plastics have the advantages of sufficient sources, easy control of properties, and convenient processing. Therefore, a wide variety of plastics or other polymer materials are widely used as engineering decorative ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C14/24C23C14/08C23C14/10
CPCC23C14/24C23C14/083C23C14/10
Inventor 毕乃快
Owner 苏州裕信宏塑料包装有限公司
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