Double-sided adhesive tape, article, and separation method

A double-sided adhesive tape technology, applied in chemical instruments and methods, adhesives, layered products, etc., can solve the problems of high manufacturing costs and limited adhesion, and achieve the effect of simple separation

Inactive Publication Date: 2017-08-18
DIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned adhesive member has a problem of high manufacturing cost due to its essential configuration of a plurality of adhesive layers.
In addition, the above-mentioned adhesive member is configured to adhere to the adherend through the weak adhesive layer, so there is a limit to the improvement of the adhesive force, and it is difficult to expand to the application of firmly fixing the article.

Method used

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  • Double-sided adhesive tape, article, and separation method
  • Double-sided adhesive tape, article, and separation method
  • Double-sided adhesive tape, article, and separation method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0031] figure 1 It is an example of embodiment of the double-sided adhesive tape concerning this invention. The double-sided adhesive tape 1 has adhesive layers 20 and 21 on both sides of an easily disassembled layer 10 containing an adhesive 11 and heat-expandable microspheres 12 . Release sheets 30, 31 may be laminated on the adhesive layers 20, 21, respectively.

[0032] Hereinafter, each structure of a double-sided adhesive tape is demonstrated.

[0033] [Easily disintegrated layer]

[0034] The easily disintegrable layer 10 contains a binder 11 and heat-expandable microspheres 12 . The easily dismantlable layer is a layer that is broken due to peeling stress such as separating the adherends when separating two or more adherends bonded by the double-sided adhesive tape.

[0035] As the above-mentioned binder, one that can be easily disassembled by the force of expansion of the above-mentioned heat-expandable microspheres can be used. In addition, it is preferable to u...

no. 2 Embodiment approach

[0080] figure 2 It is an example of embodiment of the double-sided adhesive tape concerning this invention. The double-sided adhesive tape 2 has adhesive layers 20, 21 on both sides of the easily disassembled layer 10 containing the adhesive 11 and thermally expandable microspheres 12, and on both sides between the above-mentioned easily disintegrated layer and the above-mentioned adhesive layer. It has base film 40,41. Release sheets 30, 31 may be laminated on the adhesive layers 20, 21, respectively.

[0081] The double-sided adhesive tape of the second embodiment is the double-sided adhesive tape of the above-mentioned , which further has base films 40, 41 on both of the above-mentioned easily dismantlable layer and the above-mentioned adhesive layer. adhesive tape. Note that descriptions of points common to the aforementioned will be omitted.

[0082] As the above-mentioned base film, for example, polyolefin (for example, polypropylene, polyethylene), polyester (for ...

manufacture example 1

[0126] [Manufacturing example 1] Easily disassembled layer (1)

[0127] Styrene-isoprene block copolymer S (a mixture of triblock copolymer and diblock copolymer) with a weight average molecular weight of 200,000. The proportion of the above diblock copolymer relative to the total amount of the above mixture The ratio is 52% by mass. With respect to the whole of the above-mentioned styrene-isoprene block copolymer, the mass ratio of polystyrene units is 15% by mass, and the mass ratio of polyisoprene units is 85% by mass %) 100 parts by mass, 40 parts by mass of C5 petroleum-based tackifying resin (100°C softening point, 885 number average molecular weight), 30 parts by mass of polymerized rosin ester-based tackifying resin (125°C softening point, 880 number average molecular weight), as Liquid tackifier HV-100 (manufactured by JX Nippon Oil Co., Ltd., low-molecular-weight polybutene) 5 parts by mass, Matsumoto microsphere F-48 (manufactured by Matsumoto Yushi Pharmaceutical C...

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Abstract

The present invention addresses the problem of providing a double-sided adhesive tape, which is capable of being used for application on an adherend and for affixing two or more adherends and with which easy separation is possible when separating the two or more adherends. The present invention relates to a double-sided adhesive tape characterized in having an adhesive layer, directly or via another intervening layer, on both sides of an easy separation layer containing a binder and heat-expandable microspheres. The present invention also relates to an article characterized in having a configuration in which two or more adherends are bonded using said double-sided adhesive tape.

Description

technical field [0001] The present invention relates to an easily disassembled double-sided adhesive tape and a method for separating two or more adherends bonded by the double-sided adhesive tape, wherein the double-sided adhesive tape is used for sticking to an adherend , When fixing between items, the above-mentioned sticking and fixing can be easily released after a certain period of time. Background technique [0002] Adhesive tapes are used as a joining means with excellent workability and high adhesion reliability in various industrial fields such as OA equipment, IT equipment, home appliances, automobiles, etc., for parts fixing, temporary fixing of parts, and displaying product information. Label usage, etc. In recent years, from the viewpoint of protecting the global environment, in these industrial fields, the demand for recycling and recycling of waste products has been increasing. When collecting and reusing various products, it is necessary to peel off the ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02B32B27/00B32B27/18C09J133/00C09J7/20
CPCB32B27/00B32B27/18C09J133/00C09J7/20
Inventor 秋山诚二森野彰规
Owner DIC CORP
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