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A kind of inner explosion-proof film and its application for laser processing

An anti-explosion film and laser technology, which is applied in the direction of radiation-absorbing coatings, coatings, polyester coatings, etc., can solve the problems that the anti-explosion film affects the appearance, increases the scrap rate, and reduces the penetrating ability of radium rays, so as to improve the aesthetics and Pass rate, reduce scrap rate, reduce the effect of penetrating ability

Active Publication Date: 2022-06-21
新纶光电材料(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the explosion-proof film is easy to break through during the laser processing of the glass back cover, which affects the appearance and increases the scrap rate, the invention discloses an internal explosion-proof film and its application for laser processing. The internal explosion-proof film includes The substrate layer, the laser-reducing layer and the release film layer, the laser-reducing layer can effectively shield part of the ultraviolet rays in the laser light, reduce the penetration ability of the laser rays to the diaphragm, and prevent the glass back cover from being broken down during laser processing , improve product quality, reduce scrap rate

Method used

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  • A kind of inner explosion-proof film and its application for laser processing
  • A kind of inner explosion-proof film and its application for laser processing
  • A kind of inner explosion-proof film and its application for laser processing

Examples

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Effect test

Embodiment 1

[0028] (1) Weigh 1000g of acrylic resin, 4000g of toluene and 20g of ultraviolet absorber UV-326 respectively, add them into the liquid preparation bucket, stir and disperse for 30min, leave standstill for 1h to defoaming, to obtain a coating solution;

[0029] (2) Evenly coat the prepared coating solution on the surface of the PMMA substrate (thickness 25 μm, light transmittance 91.8%, haze 0.78%), heat at 140° C. for 1 min, and dry the solvent;

[0030] (3) UV curing is performed, and the release film is attached to obtain an inner explosion-proof film that can be used for laser processing, and the thickness of the laser-reducing layer is 10 μm.

Embodiment 2

[0032] (1) Weigh 1000g of polyurethane resin, 700g of butyl acetate and 50g of ultraviolet absorber UV-P, respectively, add them into the dosing bucket, stir and disperse for 30min, leave standstill for 1h to defoaming, to obtain a coating solution;

[0033] (2) Evenly coat the prepared coating solution on the surface of a PET substrate (thickness 50 μm, light transmittance 91.2%, haze 0.89%), heat at 80° C. for 4 minutes, and dry the solvent;

[0034] (3) Perform heating and curing, and attach the release film to obtain an inner explosion-proof film that can be used for laser processing, and the thickness of the laser-reducing layer is 50 μm.

Embodiment 3

[0036] (1) Weigh 1000g epoxy resin, 2000g butyl acetate, 350g butanone, 15g ultraviolet absorber UV-531 and 15g ultraviolet absorber UV-327 respectively, add them to the dosing bucket, stir and disperse for 30min, and let stand for 1h to eliminate foam to obtain a coating solution;

[0037] (2) Evenly coat the prepared coating solution on the surface of the COP substrate (thickness 100 μm, light transmittance 92.1%, haze 0.98%), heat at 60° C. for 5 minutes, and dry the solvent;

[0038] (3) Heating and curing, attaching the release film to obtain an inner explosion-proof film that can be used for laser processing, and the thickness of the laser-reducing layer is 25 μm.

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Abstract

The invention belongs to the technical field of explosion-proof membranes, and specifically relates to an inner explosion-proof membrane that can be used for laser processing and its application. The inner explosion-proof membrane includes a base material layer, a laser-reducing layer and a release film layer arranged in sequence from bottom to top. The explosion-proof film of the present invention has a laser-reducing layer, which can effectively shield part of the ultraviolet rays in the laser light, reduce the penetration ability of the laser rays to the diaphragm, prevent the glass back cover from being broken down during laser processing, improve product quality, and reduce Scrap rate; the prepared explosion-proof film light transmittance of the present invention is greater than 90%, and the haze is less than 1%, and the ultraviolet light transmittance of the laser-reducing layer is 15-60%, preferably 20-30%, adopting 355nm laser light to base Laser processing of the material layer can ensure clear laser patterns while avoiding the breakdown of the diaphragm, improving the aesthetics and pass rate.

Description

technical field [0001] The invention belongs to the technical field of explosion-proof membranes, and in particular relates to an inner explosion-proof membrane that can be used for laser processing and its application. Background technique [0002] With the development of science and technology, digital products such as mobile phones and tablet computers have penetrated into thousands of households and become an indispensable part of daily life. The casing material of smartphones has developed from the initial plastic casing to the metal casing, glass casing, ceramic casing and so on in recent years. [0003] Although plastic casings and metal casings have been widely used due to their simple processing technology, the newly developed glass casings have the advantage of high appearance and have less shielding effect on signals than metal casings. Therefore, glass casings have begun to be used in It is widely used in current high-end mobile phones. Although the glass case ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/04C09D133/04C09D175/04C09D167/00C09D163/00C09D5/32C08L67/02C08L33/12C08L45/00C08L1/12
CPCC09D133/04C09D175/04C09D167/00C09D163/00C09D5/32C08J2367/02C08J2333/12C08J2345/00C08J2301/12C08J2433/04C08J2475/04C08J2467/00C08J2463/00C08K5/005
Inventor 路健况生荣赵丹鹤
Owner 新纶光电材料(常州)有限公司