Polyurethane glue for protective film

A polyurethane glue and protective film technology, applied in polyurea/polyurethane adhesives, adhesives, film/sheet adhesives, etc., can solve problems such as loss of meaning, glue residue, etc., to reduce the difficulty of film sticking and excellent durability , good leveling effect

Inactive Publication Date: 2016-11-23
上海精珅新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the application of polyurethane protective films is still in its infancy, most of the polyurethane protective films on the market will have a certain amount of glue residue after covering the surface of the protected object for a long time.
Although this part of the residual glue can be cleaned with cleaning agent, it has lost its original protective meaning

Method used

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  • Polyurethane glue for protective film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The protective film polyurethane glue provided by the present invention is prepared by mixing the main agent of 30% by weight and the dissolving agent ethyl acetate of 65% by weight, and then adding a curing agent of 5% by weight and stirring evenly. become.

Embodiment 2

[0020] The polyurethane glue for protective film provided by the present invention is prepared by mixing the main agent of 40% by weight and the dissolving agent ethyl acetate of 50% by weight, and then adding 10% by weight of curing agent and stirring evenly. become.

Embodiment 3

[0022] The polyurethane glue for protective film provided by the present invention is prepared after fully mixing 40% by weight of the main agent and 40% by weight of the dissolving agent ethyl acetate, adding 20% ​​by weight of the curing agent and stirring evenly. become.

[0023] The following table is a data comparison table using the protective film of polyurethane glue for protective film provided by the present invention and the protective film using silica gel and acrylic glue (AC). It can be seen that compared with the prior art, the protective film provided by the present invention is used Polyurethane glue has excellent performance, and there is no residue after the protective film is attached to the surface of the protected object for a long time.

[0024] Data comparison list of different glue protective films

[0025]

[0026] Note: 1. SJ001 / 002 is a protective film using silica gel sold on the market

[0027] 2. BT001 / 002 is a protective film that uses acry...

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Abstract

The invention discloses polyurethane glue for a protective film. The polyurethane glue is prepared by mixing 30%-60% by weight of a main agent with 30%-60% by weight of a dissolving agent and then adding 5%-20% by weight of a curing agent into the mixture. The glue has the good adhesiveness, good air exhaustion property and excellent weather resistance on plastic thin film substrates such as PET, PE and PC and can significantly improve the product quality of the protective film.

Description

technical field [0001] The invention relates to the field of glue for protective films, in particular to a polyurethane (PU) glue for protective films. Background technique [0002] During the handling or production and use of electronic and electrical products, the surface is extremely susceptible to contact pollution or scratches. It is necessary to use a protective film to cover the surface to prevent it from being polluted or damaged. In order to reduce the generation rate of bubbles and reduce the difficulty of film sticking, the requirements for the exhaust performance of the protective film itself are getting higher and higher. [0003] There are three main types of glue used for protective films on the market: (1) Silica gel. The glue used in the protective film is silica gel, which has excellent exhaust performance and weather resistance, but when it is attached to the glass surface, there will be silicon residue after a long time, which will pollute the protected ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J7/02
Inventor 孙攀王玺
Owner 上海精珅新材料有限公司
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