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OCA (Optical Clear Adhesive) tape

A tape and optical technology, applied in the direction of adhesives, non-polymer adhesive additives, film/sheet adhesives, etc., can solve the problems of poor heat resistance, difficult filling and bonding, fast curing and difficult bonding, etc.

Inactive Publication Date: 2014-03-19
常熟市富邦胶带有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcomings of acrylate adhesives are also more obvious.
First of all, the heat resistance of acrylate adhesives is poor, and it cures quickly and is difficult to be used for large-area bonding. Without thickening, it is difficult to use for filling bonding

Method used

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  • OCA (Optical Clear Adhesive) tape

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0014] Formula: cyanoacrylate: 100; polycyanoacrylate: 3; KH-550: 0.5; dibutyl ester: 3; copper acetate: 0.1.

experiment example 2

[0016] Formula: acrylate adhesive: 100; polycyanoacrylate: 3; KH-550: 0.5; tricresyl: 3; copper acetate: 0.1.

experiment example 3

[0018] Formula: acrylate adhesive: 100; acrylate: 3; KH-550: 0.5; dibutyl: 3; copper acetate: 0.1.

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PUM

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Abstract

The invention relates to an OCA (Optical Clear Adhesive) tape which sequentially comprises a light stripping PET (Poly Ethylene Terephthalate) release film layer, an OCA layer and a heavy stripping PET release film layer from top to bottom. The optical adhesive comprises the following components in parts by weight: 100 parts of acrylate adhesive, 3 parts of thickener, 0.5 parts of coupling agent, 3 parts of plasticizer and 0.1 parts of stabilizer. The OCA tape provided by the invention has better adhesive performance to various materials such as SUS plates, acrylic plates and glass plates. The OCA tape is better in transmission of light, and can be used for solving the technical problems that pollution is easily caused and the operation is inconvenient because bubbles are easily generated due to solidification and contraction of an existing liquid optical clear adhesive (LOCA) which has difficulty in thickness control in the market.

Description

technical field [0001] The invention mainly relates to an OCA optical adhesive tape, in particular to an OCA optical adhesive tape capable of better bonding properties to both inorganic glass and organic plastic sheets. Background technique [0002] The optical adhesive of OCA optical tape is a special adhesive used for bonding transparent optical components. It is characterized by colorless transparency, a light transmittance of more than 90%, good bonding strength, and can be cured at room temperature or medium temperature. With the characteristics of small curing shrinkage, it is mainly used for the bonding of ITO film, electronic paper, transparent devices, projection screen assembly, display assembly, lens assembly, resistive touch screen, capacitive touch screen, panel and other related electronic optical devices. Due to the different raw materials used, or the different preparation and measurement of the same raw materials, there are many kinds of optical adhesives. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J4/04C09J11/06C09J11/08C09J11/04
Inventor 沈阳
Owner 常熟市富邦胶带有限责任公司
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