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Multi-layer adhesive tape

A multi-layer bonding and adhesive tape technology, applied in the direction of adhesive type, ester copolymer adhesive, lamination, etc., can solve the problem of difficult physical properties of the adhesive tape, so as to promote the preparation cost and reduce the , the effect of high step coverage

Active Publication Date: 2019-11-22
KOZA NOVEL MATERIALS KOREA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, as the performance of devices using adhesive tapes has improved, the physical properties required for adhesive tapes have become increasingly difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0070] Hereinafter, the present invention will be described in detail with reference to Examples for specifically describing the present invention. However, the embodiments according to the present invention can be modified in various forms, and it should not be construed that the scope of the present invention is limited to the embodiments to be described below. The embodiments of this specification are provided to more fully explain the present invention to those skilled in the art.

[0071] [Preparation of Intermediate Adhesive Composition]

[0072] An intermediate bond comprising 75 parts by weight 2-methylhexyl acrylate, 10 parts by weight isobornyl methacrylate, 10 parts by weight acrylic acid, 5 parts by weight 2-hydroxyethyl acrylate and 5 parts by weight dimethylacrylamide was prepared agent composition.

[0073] [Preparation of outer adhesive composition]

[0074] An exterior adhesive composition comprising 88 parts by weight of 2-ethylhexyl acrylate, 10 parts by ...

Embodiment

[0076] The prepared intermediate adhesive composition and the prepared outer adhesive composition are simultaneously coated to laminate the outer adhesive composition, the intermediate adhesive composition, and the outer adhesive composition, and then by using a black light, The composition was UV cured to prepare a multilayer adhesive tape sequentially comprising a first outer adhesive layer, a middle adhesive layer, and a second outer adhesive layer. The thicknesses of the layers of the multilayer adhesive tapes prepared according to the Examples are shown in Table 1 below.

[0077] In addition, with respect to each of the multilayer adhesive tapes prepared by the examples, step coverage, punchability, presence or absence of interfacial separation phenomenon at extremely low temperature, presence or absence of interfacial separation phenomenon at high temperature, etc. are shown in Table 1 below.

[0078] [Table 1]

[0079]

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Abstract

Provided is a multi-layer adhesive tape having no interfacial separation between layers even in a cryogenic atmosphere. The multi-layer adhesive tape sequentially comprises a first outer adhesive layer, a middle adhesive layer, and a second outer adhesive layer, wherein the multi-layer adhesive tape is treated with liquid nitrogen for 15 seconds, so that adhesive force between the first outer adhesive layer, the middle adhesive layer, and the second outer adhesive layer is maintained.

Description

technical field [0001] A multilayer adhesive tape is provided. Background technique [0002] Various components are attached to the electronic device by adhesives. For example, various optical members such as polarizing plates, retardation plates, optical compensation films, reflective sheets, protective films, and brightness enhancement films may be attached to a liquid crystal display (LCD) by an adhesive tape. Recently, as the performance of devices using adhesive tapes has improved, the physical characteristics required for adhesive tapes have become increasingly difficult. Specifically, excellent durability according to high temperature fluctuations and semi-permanent adhesive performance are also required in some cases. Furthermore, reprocessability in which residue does not remain when the adhesive tape is removed for reconstitution is required in some cases. As described above, continuous research is required for adhesive tapes suitable for improvement. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10C09J7/20C09J133/08
CPCC09J133/066C09J133/26C09J7/10C09J2301/208C09J2433/00C09J2203/318C09J7/00C09J133/08C09J7/20C09J7/385C09J7/50B32B2457/202C09K2323/057B32B2457/20C09K2323/05B32B37/12B32B2405/00B32B7/12
Inventor 宋镐径林东勋徐周用崔埈满金雨渊洪在成金章淳斯莱·李徐光洙
Owner KOZA NOVEL MATERIALS KOREA CO LTD
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