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3D screen protective film and preparation method thereof

A technology of screen protection film and protective film, which is applied in the direction of sub-office equipment, film/sheet adhesive, coating, etc., which can solve the problems of easy penetration, difficult volatilization, and severe odor when tearing off the adhesive surface of the release film. Achieve good hot press formability, improve edge warping and gray edges, and prevent solvent penetration and escape

Inactive Publication Date: 2020-04-17
ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above solution solves the problem of sticking and warping of the 3D curved screen, due to the loose molecular structure of the amorphous structure polymer material (amorphous), the solvent and small molecules in the silicone formula are easy to penetrate into the amorphous high temperature at high temperature. In the molecular elastomer layer, it is difficult to volatilize
Due to the residual accumulation of solvents and small molecules in the amorphous polymer elastomer layer, small molecules will slowly pass through the loose amorphous polymer elastomer layer and silica gel layer as time goes by after the release film is pasted, resulting in After being placed for a long time, the adhesive surface of the release film has a serious smell

Method used

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Embodiment 1

[0029] The invention provides a 3D curved screen protector, which has a multi-layer structure, such as figure 2 As shown, it includes the first substrate layer 10, the first pressure-sensitive adhesive protective layer 20, the hardened layer 30, the second optical grade substrate layer 40, the amorphous polymer elastomer substrate layer 50, the sealing coating layer 60 , a second protective layer of pressure sensitive adhesive 70 and a release film layer 80 .

[0030] Among them, the first substrate layer 10 and the release film layer 80 are transparent PET films, which have no special requirements on light transmittance and haze, and have a thickness of 50 μm; the first pressure-sensitive adhesive protective layer 20 is a low-viscosity silicone pressure-sensitive adhesive, The thickness is 10um, which is formed by a wet extrusion precision coating process; the hardened layer 30 is 2.0 μm thick, and is formed by a wet micro gravure roll precision coating process; the second o...

Embodiment 2

[0032] The 3D curved surface protection sticker structure provided in Example 1, wherein the first substrate layer 10 and the release film layer 80 are transparent PET films, with no special requirements for light transmittance and haze, and a thickness of 50 μm; the first pressure-sensitive adhesive protection Layer 20 is a low-viscosity silicone pressure-sensitive adhesive with a thickness of 8um, which is formed by a wet extrusion precision coating process; The material layer 40 is an optical-grade SRF film with a thickness of 80 μm; the amorphous polymer elastomer substrate layer 50 is a TPU coating with high light transmittance, low haze and yellowing resistance, with a thickness of 70 μm, and is extruded by a wet method. Formed by a precision coating process; the sealing coating 60 is polyacrylic resin with a glass transition temperature of about 80°C, with a thickness of 6 μm, and is formed by a wet micro-gravure roll precision coating process; the second pressure-sensit...

Embodiment 3

[0034] The 3D curved surface protection sticker structure provided in Example 1, wherein the first substrate layer 10 and the release film layer 80 are transparent PET films, with no special requirements for light transmittance and haze, and a thickness of 50 μm; the first pressure-sensitive adhesive protection Layer 20 is a low-viscosity silicone pressure-sensitive adhesive with a thickness of 10um, which is formed by wet extrusion precision coating process; hardened layer 30 is 1.8 μm thick, and is formed by wet micro gravure roller precision coating process; the second optical grade base The material layer 40 is an optical-grade PET film with a thickness of 23 μm; the amorphous polymer elastomer substrate layer 50 is a TPU coating with high light transmittance, low haze and yellowing resistance, with a thickness of 40 μm, and is extruded by a wet method. Formed by a precision coating process; the sealing coating 60 is polyacrylic resin with a glass transition temperature of ...

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Abstract

The invention discloses a 3D screen protective film and a preparation method thereof. The protective film comprises a composite base material structure, a sealing coating and a second pressure-sensitive adhesive protective layer which are sequentially arranged in a stacked mode from top to bottom, the composite base material structure comprises a second optical-grade base material layer and an amorphous polymer elastomer base material layer which are stacked up and down, and the amorphous polymer elastomer base material layer is stacked on the sealing coating. The composite structure composedof the optical base material and the amorphous polymer elastomer material is adopted, so the attaching effect on a 3D curved screen is improved; and in addition, the high-crosslinking-density organicmatter coating is adopted for sealing the amorphous polymer elastomer base material layer, so the problem that an existing protective film is large in smell when stored for a long time is solved.

Description

technical field [0001] The invention relates to a screen protection film, in particular to a 3D screen protection film and a preparation method thereof. Background technique [0002] With the development of society, more and more electronic products are used. In order to improve the feel, handling and visual effects of electronic products, many electronic products use curved screens. However, it is inevitable that electronic products will encounter damage during use, and the appearance of screen protectors can obviously solve this problem well. However, the existing mobile phone protective film can only be attached to the flat surface of the display, but for the edge bending, the curved screen cannot be attached completely. In order to cater to the development of curved mobile phones, protective films for curved mobile phones have been developed accordingly. [0003] At present, in the patent document with the application number: CN201810539235.6, a curved screen protectio...

Claims

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Application Information

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IPC IPC(8): C09J7/29C09J7/25C09J7/24C09D163/00C09D133/00C09D167/00H04M1/02
CPCC09D133/00C09D163/00C09D167/00C09J2433/003C09J2463/003C09J2467/003C09J2467/006C09J2469/006C09J2475/006C09J2483/00C09J7/29C09J2301/122C09J2301/302H04M1/0283
Inventor 季立富张海洋陆伟王慧荣
Owner ZHANGJIAGANG KANGDE XIN OPTRONICS MATERIAL
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