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High-transmittance anti-scratch PET protective film and preparation method thereof

A technology of protective film and protective layer, applied in chemical instruments and methods, lamination, layered products, etc., can solve the problems of complex structure of PET protective film, low light transmittance of protective film, cumbersome preparation process, etc. Scratch ability, not easy to be brittle, the effect of improving toughness

Active Publication Date: 2020-01-31
深圳市象形科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of the PET protective film is complex, the preparation process is cumbersome, and the light transmittance of the protective film is low due to the large number of composite layers
[0008] Summarizing the existing technology, we found that whether it is coating the pressure-sensitive adhesive on the PET base layer or compounding the PET release film on the PET high-permeability film, it is improving the performance of the PET base layer film. However, although it has improved The high temperature resistance of the PET protective film has crystal point phenomenon, although the weather resistance of the PET protective film is improved, but the light transmittance is reduced.

Method used

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  • High-transmittance anti-scratch PET protective film and preparation method thereof
  • High-transmittance anti-scratch PET protective film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1P

[0036] Preparation Example 1 Preparation of PET main body layer

[0037] Put 100 parts of PET resin into a twin-screw granulator, extrude, granulate, blown into a film with a thickness of 200 μm, and cool to obtain a PET main layer.

preparation example 2P

[0038] Preparation Example 2 Preparation of PET main body layer

[0039] Put 100 parts of PET resin, 5 parts of plexiglass, and 1 part of polyurethane resin into a high-mixer and mix for 10 minutes, put the mixed raw materials into a twin-screw granulator, extrude, granulate, and blown into a film with a film thickness of 200 μm. Cool to obtain a PET main body layer.

preparation example 3P

[0040] Preparation Example 3 Preparation of PET main body layer

[0041] Put 100 parts of PET resin, 10 parts of plexiglass, and 20 parts of polyurethane resin into a high-mixer and mix for 10 minutes. Put the mixed raw materials into a twin-screw granulator for extrusion, granulation, and blow molding into a film with a film thickness of 200 μm. Cool to obtain a PET main body layer.

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PUM

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Abstract

The invention discloses a PET protective film. The protective film comprises a PET main body layer and a protective layer, wherein the PET main body layer is prepared from PET resin, and the protective layer is prepared from the following preparation raw materials in parts by mass: 50 to 70 parts of polymethyl acrylate, 10 to 20 parts of organic glass, 10 to 20 parts of thermoplastic elastomer, 0.1 to 2 parts of topaz micropowder and 0.1 to 4 parts of silicon dioxide micropowder. The prepared protective film is good in hardness, high in scratch resistance and good in toughness and is not proneto embrittlement in the using process, and the light transmittance and weather resistance of a PET base layer film are not affected while the above properties are improved.

Description

technical field [0001] The invention belongs to the field of polymer protective films, and in particular relates to a highly light-transmitting anti-scratch PET protective film. Background technique [0002] The full name of PET is polyethylene terephthalate, which is made by condensation polymerization of terephthalic acid and ethylene glycol, referred to as polyester. PET material was developed by DuPont in the United States in the early 1970s. It was mainly used in industry at the beginning. For example, the Coca-Cola plastic bottle we see today is made of PET. Because the PET material has the advantages of light weight, high strength, good transparency and gas barrier, non-toxic, tasteless, etc., it has developed rapidly. Since the 1990s, the production and application of plastic packaging materials have sprung up like mushrooms, and with the maturity of touch technology, PET materials are naturally used on various LCD screens, which is today's PET protective film. [...

Claims

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Application Information

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IPC IPC(8): B32B27/36B32B27/18B32B27/08B32B7/12B32B37/12C08L33/08C08L33/12C08L75/04C08K3/36C08K3/34C08J5/18
CPCB32B7/12B32B27/08B32B27/18B32B27/36B32B37/12C08J5/18C08J2333/08C08J2433/12C08J2475/04C08K3/34C08K3/36
Inventor 郑超超涂军
Owner 深圳市象形科技有限公司
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