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Surface protecting film for mobile phone screen at humid environment

A technology for surface protection films and mobile phone screens, applied in epoxy resin coatings, film/sheet adhesives, adhesive types, etc. Large and other problems, to achieve stable bonding, improve overall performance, and no adhesive residue

Active Publication Date: 2017-05-31
东莞市荣汉电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the popularization of mobile phones and other digital products around the world, the usage rate of mobile phones is getting higher and higher. However, China has a vast territory and great differences in the environment. The effect of the same type of surface protection film in different regions is quite different.
For the region represented by Hainan, the humidity is relatively high. In this environment, the adhesive is easy to form a water film on the surface of the adhesive, and the adhesive will also absorb water, which affects the adhesive performance and optical properties of the adhesive. performance
After searching, there is no clear type of surface protection film based on specific design in different environments in the prior art. Specifically, no surface protection film for mobile phone screens in humid environments has been found in the prior art.

Method used

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  • Surface protecting film for mobile phone screen at humid environment
  • Surface protecting film for mobile phone screen at humid environment
  • Surface protecting film for mobile phone screen at humid environment

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0043] 1. Wear-resistant coating

[0044] Wear-resistant coating A Wear-resistant coating B Wear-resistant coating C Wear-resistant coating D epoxy acrylate 30 30 30 40 epoxy resin 10 10 10 0 Photoinitiator 0.7 0.7 0.7 0.7 Amine curing agent 1.8 1.8 1.8 1.8 leveling agent 0.7 0.7 0.7 0.7 Flake Titanium Dioxide 8 0 0 8 Spherical titanium dioxide 0 8 0 0 Nano Zinc Oxide 0 0 8 coupling agent 0.8 0.8 0.8 0.8 solvent 48 48 48 48

[0045] 2. Adhesive

[0046] Adhesive A1 Adhesive A2 Adhesive B1 Adhesive B2 Adhesive B3 urethane acrylate 30 30 25 25 25 Hydroxyl Acrylates 15 15 10 10 10 Water Absorbent Additive* 0.3 0 0.2 0.4 0 crosslinking agent 2 2 3 3 3 coupling agent 15 15 2 2 2 Photoinitiator 0.5 0.5 0.5 0.5 0.5 leveling agent 1.2 1.2 1.5 1.5 1.5 solvent 36 36.3 57.8 57.6 ...

Embodiment 1

[0054] Coating wear-resistant coating A on the front side of a 160 μm thick PET film 2 containing 1.5 wt% calcium oxide and curing to obtain an 80 μm thick wear-resistant coating 1, coating the anti-blue light coating A on the reverse side and curing to obtain a 20 μm thick anti-blue light layer 3, Coating adhesive A1 (the area of ​​the outer ring accounts for 10% of the area of ​​the film layer) on the outer ring of the surface of the anti-blue light layer 3, and coating adhesive B1 on the inner area, the thickness of the adhesive layer is 90 μm, and the inner edge of the outer ring and There is a 0.1 mm wide annular gap between the outer edges of the inner region, and the surface of the adhesive layer is covered with a release liner with a thickness of 100 μm to obtain a surface protection film.

Embodiment 2-3

[0056] The wear-resistant paint B and C were used to replace the wear-resistant paint A in Example 1, respectively, to obtain a surface protection film.

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Abstract

The invention provides a surface protecting film for a mobile phone screen at a humid environment. The surface protecting film sequentially comprises a wear-proof coating (1), a polymer film layer (2), an anti-blue light layer (3), a bonder layer (4) and a peel liner (5) from top to bottom, wherein the polymer film layer (2) is a PET or PBT film containing a calcium oxide filling, the content of calcium oxide is 1%-2.5% of mass of a polymer film, and the bonder layer (4) contains a water-absorbing additive. According to the surface protecting film, the problems of poor blue light resistance and use performance at the humid environment are solved; and finally, the surface protecting film has excellent wear resistance, blue light filterability and impact resistance, extremely low moisture transmittance and low residual quantity and can be used for a long time, and a bonder has a certain water-absorbing property.

Description

technical field [0001] The invention relates to the field of surface protection films, in particular to a surface protection film for mobile phone screens in humid environments. Background technique [0002] With the popularization of mobile phones and other digital products around the world, the usage rate of mobile phones is getting higher and higher. However, China has a vast territory and great environmental differences. The effect of the same type of surface protection film applied in different regions is quite different. For the region represented by Hainan, the humidity is relatively high. In this environment, the adhesive is easy to form a water film on the surface of the adhesive, and the adhesive will also absorb water, which affects the adhesive performance and optical properties of the adhesive. performance. After searching, there is no clear type of surface protection film based on specific designs in different environments in the prior art. Specifically, no su...

Claims

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Application Information

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IPC IPC(8): C09J7/02C09J175/14C09J133/14C09J183/04C08K3/22C08L67/02C09D163/10C09D163/00C09D175/14C09D7/12
CPCC08K3/22C08K2003/2206C09D7/61C09D7/70C09D163/10C09D175/14C09J7/255C09J175/14C09J2433/00C09J2463/003C09J2475/00C09J2475/003C08L67/02C08L63/00C08K7/00C08K2003/2296C08K7/18C08K2003/2244C08L33/14C08L83/04
Inventor 马益元
Owner 东莞市荣汉电子材料有限公司
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