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A folding-resistant foam film and its manufacturing method

A production method and folding-resistant technology, which can be used in adhesives, film/sheet release coatings, film/sheet-like adhesives, etc. , the effect of simple structure

Active Publication Date: 2022-04-08
TAICANG ZHANXIN ADHESIVE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional mobile phone manufacturers generally fill foam in the production process of mobile phone touch screens, but traditional foam materials are not resistant to bending, and there is an urgent need for a foam film that is resistant to folding

Method used

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  • A folding-resistant foam film and its manufacturing method
  • A folding-resistant foam film and its manufacturing method
  • A folding-resistant foam film and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] This embodiment provides a foldable foam film, including: a foam layer 101, a first foldable adhesive layer 102, a light release film 103, a second foldable adhesive layer 104 and a heavy release film 105 . Wherein, the foam layer 101 is made of PU foam with a thickness of 100 μm, and a hardened layer with a thickness of 5 μm is formed on both sides of the layer; the first anti-folding adhesive layer 102 and the second anti-folding adhesive layer 104 are both 3M 81402 type double-sided adhesive tape; the model of light release film 103 is RL427, and the heavy release film 105 is 3M81402 type double-sided tape with heavy release film.

[0056] The first anti-folding adhesive layer 102, the foam layer 101 and the second anti-folding adhesive layer 104 are provided with through device accommodation holes 201, and the positions corresponding to the device accommodation holes 201 are opened on the heavy release film 105. Cross-shaped through-wire 202 .

Embodiment 2

[0058] This embodiment provides a foldable foam film, including: a foam layer 101, a first foldable adhesive layer 102, a light release film 103, a second foldable adhesive layer 104 and a heavy release film 105 . Wherein, the foam layer 101 is made of PU foam with a thickness of 100 μm, and 6 μm-thick hardened layers are formed on both sides of the foam layer. The first anti-folding adhesive layer 102 and the second anti-folding adhesive layer 104 are both 3M 81402 type double-sided adhesive tape; the model of the light release film 103 is RL427, and the heavy release film 105 is 3M81402 type double-sided adhesive tape with its own weight Release film.

[0059] The first anti-folding adhesive layer 102, the foam layer 101 and the second anti-folding adhesive layer 104 are provided with through device accommodation holes 201, and the positions corresponding to the device accommodation holes 201 are provided on the light release film 103. Cross-shaped through-wire 202 .

Embodiment 3

[0061] This embodiment provides a foldable foam film, including: a foam layer 101, a first foldable adhesive layer 102, a light release film 103, a second foldable adhesive layer 104 and a heavy release film 105 . Wherein, the foam layer 101 is made of TPU foam with a thickness of 100 μm, and 8 μm thick hardened layers are formed on both sides of the foam layer. The first anti-folding adhesive layer 102 and the second anti-folding adhesive layer 104 are both 3M 8146-1 type double-sided tape; the model of the light release film 103 is RL427, and the heavy release film 105 is 3M8146-1 type double-sided The adhesive comes with a heavy release film.

[0062] The first anti-folding adhesive layer 102, the foam layer 101 and the second anti-folding adhesive layer 104 are provided with through device accommodation holes 201, and the light release film 103 and the heavy release film 105 are connected to the device accommodation holes. The positions corresponding to 201 are provided ...

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Abstract

The invention discloses a foldable foam film, comprising: a foam layer, a first foldable adhesive layer, a light release film, a second foldable adhesive layer and a heavy release film. The first anti-folding adhesive layer is arranged on one side surface of the foam layer, the light release film is arranged on the surface of the first anti-folding adhesive layer away from the foam layer, and the second anti-folding adhesive layer is arranged on the foam layer On the other side of the surface, the heavy release film is provided on the surface of the second fold-resistant adhesive layer away from the foam layer; both sides of the foam layer are formed with a 5-8 μm thick hardened layer. The invention also discloses a manufacturing method of the folding-resistant foam film. The foldable foam film of the present invention can be bent up to 200,000 times.

Description

technical field [0001] The invention relates to the field of touch screen auxiliary materials, in particular to a folding-resistant foam film and a manufacturing method thereof. Background technique [0002] The mobile phone screen market ranges from narrow bezels to curved screens, notch screens, beauty tips, hole-digging screens, and full screens. Even if these screens reach 100% full screen, they can only be limited by the size of the phone. Basically, it will be capped at 7 inches. The release of folding screens surpassed this limitation. It realizes the practical application of a larger mobile phone screen by means of folding and expansion. However, it is not easy to manufacture a folding-resistant screen, and the components of the screen need to be able to be folded. Traditional mobile phone manufacturers generally fill foam in the production process of mobile phone touch screens, but traditional foam materials are not resistant to bending, and there is an urgent need...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/26C09J7/30C09J7/50H04M1/02
CPCC09J7/26C09J7/30C09J7/50H04M1/0202
Inventor 唐浩成钱健黄秋敏朱宇杰
Owner TAICANG ZHANXIN ADHESIVE MATERIAL