Protective film and preparation method thereof

A protective film and protective layer technology, applied in chemical instruments and methods, lamination, coating, etc., can solve the problems of poor adhesion, non-solvent resistance of PC surface, etc., and achieve good formability, high light transmittance, and improved The effect of visual experience

Inactive Publication Date: 2017-02-15
惠州市摩码菱丽光电材料有限公司
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Problems solved by technology

[0007] The purpose of the present invention is to provide a 2.5D protective film, which solves the problem of so

Method used

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  • Protective film and preparation method thereof

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, where the schematic embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0028] Such as figure 1 As shown, a 2.5D protective film, the protective film from top to bottom is PET substrate 1, silicone pressure-sensitive adhesive protective layer 2, polyurethane acrylic resin hardened layer 3, PMMA (polymethyl methacrylate) Layer 5, PC (polycarbonate) layer 6, silicone pressure-sensitive adhesive protective layer 2, PET release film 7, the contact surface of the PMMA layer 5 and the polyurethane acrylic resin hardening layer 4 is coated with pretreatment A primer layer 4 , a pretreatment primer layer 4 is coated on the contact surface between the PC layer 6 and the silicone pressure-sensitive adhesive protective layer 2 .

[0029] Specifically, the pretreatment ...

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Abstract

The invention discloses a 2.5D protective film, which consists of a PET substrate 1, an organosilicon pressure-sensitive adhesive protective layer 2, a polyurethane acrylic resin hardened layer 3, a PMMA layer 5, a PC layer 6, an organosilicon pressure-sensitive adhesive protective layer 2 and a PET release film 7 from top to bottom in order. The contact surface of the PMMA layer 5 and the polyurethane acrylic resin hardened layer 3 is coated with a pretreatment priming coat 4, and the contact surface of the PC layer 6 and the organosilicon pressure-sensitive adhesive protective layer 2 is coated with a pretreatment priming coat 4. The invention also discloses a preparation method of the protective film. According to the invention, the good hot bending performance of PC/PMMA solves the solvent intolerance and poor adhesion problems of the PC surface, and by means of the low peel strength and high exhaust organosilicon pressure-sensitive adhesive, perfect combination of usability and high performance can be realized.

Description

technical field [0001] The invention relates to a mobile phone protective film, in particular to a 2.5D protective film and a preparation method thereof. Background technique [0002] With the popularity of curved screens, more and more mobile phones use curved cover glass. The existing mobile phone protective films on the market are also required to have a heat bending setting function to adapt to the current development of mobile phones. However, the current PET protective film has poor thermoplasticity, and it is easy to rebound after hot pressing, so it is difficult to form. [0003] In view of the above problems, there are generally three solutions in the prior art: [0004] 1. Make the glass into a 2.5D arc shape, and fix the glass with AB glue. This solution is expensive, and the glass is difficult to form, the process is complicated, and the yield rate is low. [0005] 2. Thin the PET base material of the protective film, thicken and stick the pressure-sensitive a...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/36B32B7/12B32B7/06B32B37/12B32B37/15
CPCB32B7/06B32B7/12B32B27/08B32B27/36B32B27/365B32B37/12B32B37/153B32B2255/10B32B2255/26B32B2307/412
Inventor 齐东东孙金永席忠飞潘忠平艾清周丽娜李杨林
Owner 惠州市摩码菱丽光电材料有限公司
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