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Hot bending film for radian screen as well as preparation method and application thereof

A film layer and base film technology, which is applied to the field of thermal bending film for curved screen and its preparation, can solve the problems that the flat film cannot be perfectly fitted to the mobile phone, the screen of the mobile phone is easily broken or scratched, and the function of the mobile phone is reduced, and the like. Good abrasion resistance, good anti-scratch effect, good transparency effect

Pending Publication Date: 2017-05-31
江苏旭泽技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current smartphones are touch-screen, and the screen of the mobile phone is easy to be broken or scratched. The traditional mobile phone film can no longer meet people's needs. Most of the tempered film in the market today lacks anti-static effect, and it is easy to absorb dust during the attachment process, or it is difficult to accurately locate it on the mobile phone screen due to electrostatic adsorption, resulting in debris or dust during the film attachment process. Air bubbles will be generated after entering the film, which will reduce the function of the mobile phone after the film is pasted
[0003] In addition, the emerging curved borderless mobile phones put forward higher requirements for the mobile phone film. The flat film cannot be perfectly attached to the mobile phone, and the current film has shortcomings such as heat shrinkage and short service life. Therefore, it is expected to be able to develop in this field. A kind of hot bending film for radian screen with low shrinkage rate

Method used

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  • Hot bending film for radian screen as well as preparation method and application thereof
  • Hot bending film for radian screen as well as preparation method and application thereof
  • Hot bending film for radian screen as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] In this embodiment, the structure of the hot bending film is as figure 1 As shown, it includes a pressure-sensitive adhesive layer (1), a first polyurethane adhesive layer (2), a PET resin film layer (3), a second polyurethane adhesive layer (4) and a cured PUA film layer (5) from bottom to top, The shrinkage rate of the PET resin film layer is 0.8%.

[0086] Wherein the thickness of the pressure-sensitive adhesive layer is 42 μm, the thickness of the first polyurethane adhesive layer is 280 nm, the thickness of the PET resin film is 100 μm, the thickness of the second polyurethane adhesive layer is 280 nm, and the thickness of the cured PUA film layer is 2 μm. The shrinkage rate of the lower base film layer and the upper base film layer is 0.5%.

[0087] The cured PUA film layer is a cured PUA film layer obtained by ultraviolet curing of polyurethane acrylate, and the number average molecular weight of the polyurethane acrylate is 20000;

[0088] The concrete prepara...

Embodiment 2

[0096] In this embodiment, the structure of the hot bending film is as figure 2 As shown, from bottom to top, it includes pressure-sensitive adhesive layer (1), first polyurethane adhesive layer (2), first PET resin film (31), composite OCA adhesive layer (6), second PET resin film (32) , the second polyurethane adhesive layer (4) and the cured PUA film layer (5), the shrinkage rate of the PET resin film layer is 0.6%.

[0097]The thickness of the pressure-sensitive adhesive layer is 10 μm, the thickness of the first polyurethane adhesive layer is 100 nm, the thickness of the first PET resin film is 25 μm, the thickness of the composite OCA adhesive layer is 10 μm, the thickness of the second PET resin film is 20 μm, and the thickness of the second PET resin film is 20 μm. The thickness of the two polyurethane adhesive layers is 150 nm, and the thickness of the cured PUA film layer is 3.5 μm. The shrinkage rate of the lower base film layer and the upper base film layer is 0....

Embodiment 3

[0107] In this embodiment, the structure of the hot bending film is as image 3 As shown, it includes the lower base film layer (9), the release film layer (8), the pressure-sensitive adhesive layer (1), the first polyurethane adhesive layer (2), the PET resin film layer (3), the second Two polyurethane adhesive layers (4), cured PUA film layer (5), protective adhesive layer (6) and lower base film layer (7), the shrinkage rate of the PET resin film layer is 0.5%.

[0108] The thickness of the lower base film layer is 75 μm, the thickness of the release film layer is 300 μm, the thickness of the pressure-sensitive adhesive layer is 20 μm, the thickness of the first polyurethane adhesive layer is 220 nm, the thickness of the PET resin film layer is 50 μm, the second polyurethane adhesive The thickness of the layer is 220 nm, the thickness of the cured PUA film layer is 3 μm, the thickness of the protective adhesive layer is 50 μm and the thickness of the upper base film layer i...

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Abstract

The invention provides a hot bending film for a radian screen as well as a preparation method and application thereof. The hot bending film sequentially comprises a pressure-sensitive adhesive layer, a first polyurethane adhesive layer, a PET (polyethylene terephthalate) resin film layer, a second polyurethane adhesive layer and a cured PUA (polyurethane acrylate) film layer from bottom to top, wherein the shrinkage ratio of the PET resin film layer and the cured PUA film layer is 0.8% or lower. The various structure layers of the hot bending film are stacked together so as to obtain the hot bending film disclosed by the invention, the hot bending film has the shrinkage ratio of 0.8% or lower, the overall hot bending shrinkage ratio of the hot bending film is consistent, and the phenomena that the hot bending film warps and fails to set, resilience is caused and the like are avoided. Moreover, the hot bending film has high wear resistance, excellent scratch resistance and high transparency, is excellent in temperature resistance and stable in structure, can be prepared into 2.5D, 3D or 4D hot bending films and can be firmly attached to display screens with radians such as mobile phone screens, tablet personal computer screens, television screens and the like.

Description

technical field [0001] The invention belongs to the technical field of protective films, and relates to a hot bending film and a preparation method and application thereof, in particular to a hot bending film for a curved screen and a preparation method and application thereof. Background technique [0002] With the development of information and communication technology, smart phones have become a must for people. However, most of the current smartphones are touch-screen, and the screen of the mobile phone is easy to be broken or scratched. The traditional mobile phone film can no longer meet people's needs. Most of the tempered film in the market today lacks anti-static effect, and it is easy to absorb dust during the attachment process, or it is difficult to accurately locate it on the mobile phone screen due to electrostatic adsorption, resulting in debris or dust during the film attachment process. Into the air bubbles, resulting in reduced function of the mobile phone...

Claims

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Application Information

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IPC IPC(8): C09J7/02
CPCC09J7/29C09J2467/006C09J2483/00C09J2475/00C09J2475/006
Inventor 金国华朱霆
Owner 江苏旭泽技术有限公司
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