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

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

Example Embodiment

[0042] 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 acrylate30303040 Epoxy resin1010100 Photoinitiator0.70.70.70.7 Amine curing agent1.81.81.81.8 Leveling agent0.70.70.70.7 Flake titanium dioxide8008 Spherical titanium dioxide0800 Nano zinc oxide008 Coupling agent0.80.80.80.8 Solvent48484848

[0045] 2. Adhesive

[0046] Adhesive A1 Adhesive A2 Adhesive B1 Adhesive B2 Adhesive B3 Urethane acrylate3030252525 Hydroxyl-containing acrylate1515101010 Water-absorbing additives*0.300.20.40 Crosslinking agent22333 Coupling agent1515222 Photoinitiator0.50.50.50.50.5 Leveling agent1.21.21.51.51.5 Solvent3636.357.857.658

[0047] *Adhesive A1 uses cobalt-free discoloring silica gel desiccant, and adhesives B1 and B2 use porous silica gel desiccant.

[0048] 3. Anti-blue light coating

[0049] Anti-blue light paint A : 30 parts by weight of polyuret...

Example Embodiment

[0053] Example 1

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

Example Embodiment

[0055] Example 2-3

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

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PUM

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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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