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2.5D protective film and preparation method thereof

A technology of protective film and protective layer, which is applied in the direction of pressure-sensitive film/sheet, film/sheet-shaped adhesive, adhesive, etc., which can solve the problem of poor thermoforming of PET protective film, warped edges, and easy rebound and other problems, to achieve the effect of improving visual experience, firm fit, and excellent exhaust performance

Inactive Publication Date: 2018-06-22
新纶电子材料(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a 2.5D protective film and its preparation method, and choose soft PET which is more suitable for thermocompression forming as the structural substrate, so as to solve the problem of the existing PET protective film. Poor formability of hot pressing, it is easy to rebound after hot pressing, and it is easy to cause the problem of warped corners and gray edges after being attached to the mobile phone screen

Method used

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  • 2.5D protective film and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment provides a 2.5D protective film, such as figure 1 As shown, it is a multi-layer structure, with PET substrate layer 1, first silicone pressure-sensitive adhesive protective layer 2, polyacrylic resin hardened layer 3, first special optical grade PET substrate layer 4, OCA An optical polyacrylic adhesive layer 5 , a second special optical grade PET substrate layer 6 , a second silicone pressure-sensitive adhesive protective layer 7 and a PET fluorine release film layer 8 . in,

[0047] The thickness of the PET substrate layer 1 is 50 μm,

[0048] The thickness of the first silicone pressure-sensitive adhesive protective layer 2 is 10 μm,

[0049] The polyacrylic resin hardened layer 3 has a thickness of 3 μm,

[0050] The thickness of the first special optical PET substrate layer 4 is 50 μm,

[0051] The thickness of the OCA optical polyacrylic adhesive layer 5 is 20 μm,

[0052] The thickness of the second special optical PET substrate layer 6 is 50...

Embodiment 2

[0072] This embodiment provides a 2.5D protective film, such as figure 1 As shown, it is a multi-layer structure, with PET substrate layer 1, first silicone pressure-sensitive adhesive protective layer 2, polyacrylic resin hardened layer 3, first special optical grade PET substrate layer 4, OCA An optical polyacrylic adhesive layer 5 , a second special optical grade PET substrate layer 6 , a second silicone pressure-sensitive adhesive protective layer 7 and a PET fluorine release film layer 8 . in,

[0073] The thickness of the PET substrate layer 1 is 50 μm,

[0074] The thickness of the first silicone pressure-sensitive adhesive protective layer 2 is 10 μm,

[0075] The thickness of the polyacrylic resin hardened layer 3 is 2.5 μm,

[0076] The thickness of the first special optical PET substrate layer 4 is 50 μm,

[0077] The thickness of the OCA optical polyacrylic adhesive layer 5 is 10 μm,

[0078] The thickness of the second special optical PET substrate layer 6 is...

Embodiment 3

[0098] This embodiment provides a 2.5D protective film, such as figure 1 As shown, it is a multi-layer structure, with PET substrate layer 1, first silicone pressure-sensitive adhesive protective layer 2, polyacrylic resin hardened layer 3, first special optical grade PET substrate layer 4, OCA An optical polyacrylic adhesive layer 5 , a second special optical grade PET substrate layer 6 , a second silicone pressure-sensitive adhesive protective layer 7 and a PET fluorine release film layer 8 . in,

[0099] The thickness of the PET substrate layer 1 is 50 μm,

[0100] The thickness of the first silicone pressure-sensitive adhesive protective layer 2 is 10 μm,

[0101] The polyacrylic resin hardened layer 3 has a thickness of 3 μm,

[0102] The thickness of the first special optical PET substrate layer 4 is 50 μm,

[0103] The thickness of the OCA optical polyacrylic adhesive layer 5 is 20 μm,

[0104] The thickness of the second special optical PET substrate layer 6 is 75...

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Abstract

The invention provides 2.5D protective film and a preparation method thereof. The 2.5D protective film is of a multi-layer structure, and comprises a PET substrate layer, a first organosilicon pressure-sensitive adhesive protective layer, a polyacrylic resin hardened layer, a first special optical-grade PET substrate layer, an OCA optical polyacrylic adhesive layer, a second special optical-gradePET substrate layer, a second organosilicon pressure-sensitive adhesive protective layer and a PET fluorine release film layer which are adhered sequentially. The 2.5D protective film has high light transmittance, low haze and good hot press formability, and the problems of corner shelling and edge graying which are easily caused by a PC surface which is unresistant to solvents and has poor adhesion after the PC surface is adhered to a mobile phone screen are solved; the hardened layer has high wear resistance, high hardness, AF anti-fingerprint performance and AG smoothness; and organosiliconpressure-sensitive adhesive has the advantages of moderate viscosity, firm adhesion to a glass cover plate of a mobile phone and excellent gas exhausting properties; through the 2.5D protective film,perfect combination of usability and high performance is achieved.

Description

technical field [0001] The invention relates to a 2.5D protective film and a preparation method thereof, belonging to the technical field of mobile phone protective films. Background technique [0002] With the popularity of curved screens, more and more mobile phones use glass displays with 2.5D curved surfaces. The existing mobile phone protective film on the market is also required to have a glass display protection that presents a 2.5D shape after heat pressing to adapt to the 2.5D curved surface of the current mobile phone. However, the current PET protective film has poor hot-press formability, and it is easy to rebound after hot-pressing, and it is easy to have the problem of warped corners and gray edges after being attached to the mobile phone screen. Contents of the invention [0003] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a 2.5D protective film and its preparation method, and choose soft PET w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/29C09J7/38C09J183/07C09J183/04
CPCC08L2205/025C09J183/04C09J2467/006C09J2301/122C09J2301/302C08L83/04
Inventor 易中华沈冲耿洪斌
Owner 新纶电子材料(常州)有限公司
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