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A kind of hot bending film for radian screen

A technology of curvature and film layer, which is applied in the field of hot bending film for curved screens, can solve the problems that PET flat film cannot be bonded, the screen is easily broken or scratched, and cannot be exported, and achieves good wear resistance and scratch resistance. Good, to avoid the effect of film warping

Active Publication Date: 2022-03-15
NANJING TSINGSHANG ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of today's smartphones are touch-screen, and the screen is easy to break or scratch. However, the traditional mobile phone film can no longer meet people's needs.
In addition, the rise of curved and borderless large-screen mobile phones has put forward higher requirements for mobile phone protective films. The existing PET flat film cannot fit perfectly with the curved edge screen, and the existing protection exists due to high pressure during transportation and use. Shortcomings such as arc edge rebound caused by low temperature cycle make it impossible to export

Method used

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  • A kind of hot bending film for radian screen
  • A kind of hot bending film for radian screen
  • A kind of hot bending film for radian screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] As an embodiment of a heat bending film for a curved screen of the present invention, the structure of the heat bending film is as follows figure 1 As shown, it includes the first protective film 1, the silica gel layer 2, the first PET resin film layer 3, the OCA adhesive layer 4, the thermosetting acrylic resin film layer 5, the second PET resin film layer 6, and the hardened layer 7 from bottom to top. and the second protective film 8;

[0031] Wherein, the thickness of the first protective film 1 is 50 μm, the thickness of the silica gel layer 2 is 25 μm, the thickness of the first PET resin film layer 3 is 5 μm, the thickness of the OCA adhesive layer 4 is 30 μm, and the thickness of the thermosetting acrylic resin film layer 5 is The thickness of the second PET resin film layer 6 is 25 μm, the thickness of the cured layer 7 is 3 μm, and the thickness of the second protective film 8 is 50 μm.

[0032] Among them, the peel strength of the first protective film is 0...

Embodiment 2

[0036] As an embodiment of a heat bending film for a curved screen of the present invention, the structure of the heat bending film is as follows figure 1 As shown, it includes the first protective film 1, the silica gel layer 2, the first PET resin film layer 3, the OCA adhesive layer 4, the thermosetting acrylic resin film layer 5, the second PET resin film layer 6, and the hardened layer 7 from bottom to top. and the second protective film 8;

[0037] Wherein, the thickness of the first protective film 1 is 50 μm, the thickness of the silica gel layer 2 is 50 μm, the thickness of the first PET resin film layer 3 is 15 μm, the thickness of the OCA adhesive layer 4 is 40 μm, and the thickness of the thermosetting acrylic resin film layer 5 is The thickness of the second PET resin film layer 6 is 50 μm, the thickness of the cured layer 7 is 3 μm, and the thickness of the second protective film 8 is 50 μm.

[0038] Wherein, the peel strength of the first protective film is 0.5...

Embodiment 3

[0042] As an embodiment of a heat bending film for a curved screen of the present invention, the structure of the heat bending film is as follows figure 1 As shown, it includes the first protective film 1, the silica gel layer 2, the first PET resin film layer 3, the OCA adhesive layer 4, the thermosetting acrylic resin film layer 5, the second PET resin film layer 6, and the hardened layer 7 from bottom to top. and the second protective film 8;

[0043]Wherein, the thickness of the first protective film 1 is 50 μm, the thickness of the silica gel layer 2 is 75 μm, the thickness of the first PET resin film layer 3 is 15 μm, the thickness of the OCA adhesive layer 4 is 50 μm, and the thickness of the thermosetting acrylic resin film layer 5 is The thickness of the second PET resin film layer 6 is 75 μm, the thickness of the hardened layer 7 is 3 μm, and the thickness of the second protective film 8 is 50 μm.

[0044] Among them, the peel strength of the first protective film i...

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Abstract

The invention discloses a hot bending film for a curved screen. The hot bending film includes a first protective film, a silica gel layer, a first PET resin film layer, an OCA adhesive layer, a thermosetting acrylic resin film layer, and a second protective film from bottom to top. Two PET resin film layers, a hardening layer and a second protective film. The hot bending film of the present invention can achieve good bonding with mobile phone screens, etc., and the overall hot bending shrinkage rate is consistent, avoiding the phenomenon of film warping, shape failure and springback after hot bending; it has good wear resistance, Good anti-scratch effect, good transparency, good temperature resistance, stable structure, can be prepared into 2.5D, 3D or 4D hot bending film, and can be realized with curved display screens such as mobile phone screens, tablet computer screens, and TV screens Secure fit.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a heat bending film for a curved screen. Background technique [0002] With the development of information and communication technology, smart phones have become a must-have in people's lives. Most of today's smartphones are touch-screen, and the screen is easy to break or scratch. However, the traditional mobile phone film has long been unable to meet people's needs. In addition, the rise of curved and borderless large-screen mobile phones has put forward higher requirements for mobile phone protective films. The existing PET flat film cannot fit perfectly with the curved edge screen, and the existing protection exists due to high pressure during transportation and use. Shortcomings such as arc edge rebound caused by low temperature cycle make it impossible to export. [0003] Therefore, there is an urgent need to develop a thermal bending film for a curved screen tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/29H04M1/02
CPCC09J7/29H04M1/0283C09J2467/006C09J2433/006C09J2475/006C09J2301/162C09J2301/122
Inventor 董村东赵朋陈坤
Owner NANJING TSINGSHANG ADVANCED MATERIALS TECH CO LTD
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