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Folding-resistant foam adhesive film and manufacturing method thereof

A production method and folding-resistant technology, which is applied in the direction of adhesives, film/sheet release coatings, film/sheet-shaped adhesives, etc., can solve the problems of foam materials that are not resistant to bending, and improve the folding resistance , the effect of simple structure

Active Publication Date: 2020-10-30
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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  • Folding-resistant foam adhesive film and manufacturing method thereof
  • Folding-resistant foam adhesive film and manufacturing method thereof
  • Folding-resistant foam adhesive film and manufacturing method thereof

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 3M 81402 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 3M 81402 type double-sided adhesive tape. Heavy 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 3M 8146-1 type double-sided adhesive tape; The surface 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 correspond...

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Abstract

The invention discloses a folding-resistant foam adhesive film. The folding-resistant foam adhesive film comprises a foam layer, a first folding-resistant adhesive layer, a light release membrane, a second folding-resistant adhesive layer and a heavy release membrane, wherein the first folding-resistant adhesive layer is arranged on the surface of one side of the foam layer, the light release membrane is arranged on the surface, away from the foam layer, of the first folding-resistant adhesive layer, the second folding-resistant adhesive layer is arranged on the surface of the other side of the foam layer, and the heavy release membrane is arranged on the surface, away from the foam layer, of the second folding-resistant adhesive layer. Hardened layers with the thickness of 5-8 microns areformed on the surfaces of the two sides of the foam layer. The invention further discloses a manufacturing method of the folding-resistant foam adhesive film. The folding-resistant foam adhesive filmdisclosed by the invention can be bent for 200 thousand 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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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