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Super-clear flexible glass protection film, preparation method and application thereof

A glass protective film, flexible glass technology, applied in branch equipment, film/sheet release coating, film/sheet adhesive, etc., can solve the problems of easy product snowflakes and bubbles, high scrap rate, high hardness , to solve the effect of laminating bubbles and snowflakes, high production yield, and simple production process

Active Publication Date: 2022-01-11
江西昊泽光学膜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]However, today's smart phones use large-screen touch screens, and the thickness of tempered glass is usually less than 0.4mm. The defect rate remains high during the processing, and the overall defect rate exceeds 50%. At the same time, the process of bonding AB glue to the glass after hot bending also produces a high scrap rate
Therefore, the defect rate of the finished tempered glass protective film processing exceeds 50%, causing serious waste and loss
[0005] In addition, the raw material of tempered glass is glass, which has high hardness and cannot be bent. The bonding process is also prone to adverse phenomena such as snowflakes and air bubbles.
This makes it difficult for the existing tempered glass protective film to meet the new needs of the large screen of the smartphone

Method used

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  • Super-clear flexible glass protection film, preparation method and application thereof
  • Super-clear flexible glass protection film, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] An ultra-clear and high-hardness flexible glass protective film is made by the following steps:

[0064] Step S1: mix polyurethane-modified acrylic resin, epoxy-modified acrylic resin, fluorine-modified polyurethane resin, photoinitiator, ethyl acetate, acetone, methyl ethyl ketone, and toluene in mass ratio: 25:10:2:0.5: 15:10:5:10, stir and mix evenly, coat on the A side of the second PET layer, enter the high-temperature oven, and set the temperature of the oven in different zones. The temperature is: 40℃, 60℃, 90℃, 120℃, 100℃, It goes out of the oven and enters into a UV curing device, where it is cured into the first polyurethane acrylic coating, and the semi-finished product A1 is obtained by winding. The thickness of the second PET layer is 125 μm, the thickness of the first polyurethane acrylic coating is 35 μm, and the thickness of semi-finished product A1 is 160 μm.

[0065] Step S2: Stir and mix polyurethane-modified acrylic resin, photoinitiator, ethyl acet...

Embodiment 2

[0072]Step S1: mix polyurethane-modified acrylic resin, epoxy-modified acrylic resin, fluorine-modified polyurethane resin, photoinitiator, ethyl acetate, acetone, methyl ethyl ketone, and toluene in mass ratio: 30:10:2:0.5: 15:15:5:10, stir and mix evenly, coat on the A side of the second PET layer, enter the high-temperature oven, and set the temperature of the oven in different zones, the temperature is: 40°C, 60°C, 90°C, 120°C, 100°C It goes out of the oven and enters into a UV curing device, where it is cured into the first polyurethane acrylic coating, and the semi-finished product A1 is obtained by winding. The thickness of the second PET layer is 75 μm, the thickness of the first polyurethane acrylic coating is 45 μm, and the thickness of semi-finished product A1 is 120 μm.

[0073] Step S2: Stir and mix polyurethane-modified acrylic resin, photoinitiator, ethyl acetate, acetone, butanone according to mass ratio: 35:0.5:15:10:10, and coat them in step S1 semi-finished ...

Embodiment 3

[0080] Step S1: Mix polyurethane-modified acrylic resin, epoxy-modified acrylic resin, fluorine-modified polyurethane resin, photoinitiator, ethyl acetate, acetone, methyl ethyl ketone, and toluene in mass ratio: 30:5:1.5:0.6: 15:15:5:10, stir and mix evenly, coat on the A side of the second PET layer, enter the high-temperature oven, and set the temperature of the oven in different zones, the temperature is: 40°C, 60°C, 90°C, 120°C, 100°C It goes out of the oven and enters into a UV curing device, where it is cured into the first polyurethane acrylic coating, and the semi-finished product A1 is obtained by winding. The thickness of the second PET layer is 50 μm, the thickness of the first polyurethane acrylic coating is 45 μm, and the thickness of semi-finished product A1 is 95 μm.

[0081] Step S2: Stir and mix polyurethane-modified acrylic resin, photoinitiator, ethyl acetate, acetone, butanone according to mass ratio: 35:0.5:15:10:10, and coat them in step S1 semi-finished...

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Abstract

The invention discloses a super-clear flexible glass protection film, a preparation method and application thereof. The super-clear flexible glass protection film comprises a first PET layer, a first pressure-sensitive adhesive layer, an anti-reflection nano coating, a first polyurethane acrylic acid coating, a second PET layer, a second polyurethane acrylic acid coating, a second pressure-sensitive adhesive layer, a release agent coating and a third PET layer which are sequentially attached from top to bottom. According to the invention, the pencil hardness of the super-clear flexible glass protection film product reaches 9H, and the super-clear flexible glass protection film product can be bent, has super-clear, high-hardness and fingerprint and oil stain prevention functions, has the full light transmittance of more than 93%, and can completely replace a tempered glass protection film.

Description

technical field [0001] The invention relates to the technical field of screen protective film preparation, in particular to an ultra-clear and high-hardness flexible screen protective film and its preparation method and application. Background technique [0002] Mobile phone film is usually used to beautify the mobile phone, and at the same time protect the LCD screen of the mobile phone. As we all know, smartphones have become an indispensable tool in people's lives. The screens of smartphones are made of glass, which is fragile and not resistant to scratches, which affects the service life of the phone. Therefore, screen protectors have become a necessity. [0003] Tempered glass film is a kind of screen protective film that is popular among consumers at present. It has a bare metal touch, high hardness and high light transmittance. This tempered glass film product is composed of tempered glass and AB glue. The acrylic surface of the AB glue is bonded to the tempered gla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/29C09J7/50H04M1/18
CPCC09J7/29C09J7/50H04M1/185C09J2301/122C09J2301/302C09J2301/162C09J2467/006C09J2475/003C09J2433/003Y02E10/50
Inventor 程松波余正波罗霄
Owner 江西昊泽光学膜科技有限公司
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