Title:
DOUBLE-SIDED ADHESIVE TAPE
Document Type and Number:
WIPO Patent Application WO/2021/084945
Kind Code:
A1
Abstract:
Provided is double-sided adhesive tape that has exceptional initial adhesiveness to adherends, stretches sufficiently, does not readily break even when stretching sufficiently, can be smoothly pulled and removed from an adherend while in a stretched state, and has exceptional re-working properties. The double-sided adhesive tape in one embodiment of the present invention has an adhesive layer (B1), a substrate layer (A), and an adhesive layer (B2) in the stated order. Each of the adhesive layer (B1) and the adhesive layer (B2) contains at least one selected from the group consisting of alkyl-based adhesives and rubber-based adhesives. The alkyl-based adhesives contain fillers. The substrate layer (A) contains, as a resin component, at least one selected from the group consisting of polyolefins, thermoplastic polyurethanes, and styrene-based polymers. The initial adhesive force of each of the adhesive layer (B1) and the adhesive layer (B2), at a peeling speed of 300 mm/min and a peeling angle of 180 degrees relative to an SUS plate in an environment at 23°C and 50% RH stipulated in JIS-Z-0237-2000, is 5 N/10 mm or higher. The elongation at break of each of the adhesive layer (B1) and the adhesive layer (B2), as measured using the "elongation" measurement method stipulated in JIS-K-7311-1995, is 600% or higher.
Inventors:
YAMASHITA YUKIHIRO (JP)
SAITO MAKOTO (JP)
ISEKI TORU (JP)
FUKUHARA JUNJI (JP)
SAITO MAKOTO (JP)
ISEKI TORU (JP)
FUKUHARA JUNJI (JP)
Application Number:
PCT/JP2020/034694
Publication Date:
May 06, 2021
Filing Date:
September 14, 2020
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
B32B25/08; B32B27/00; B32B27/20; B32B27/30; B32B27/32; B32B27/40; C09J7/22; C09J7/29; C09J7/38; C09J11/06; C09J11/08; C09J121/00; C09J133/00
Foreign References:
| JP2017171772A | 2017-09-28 | |||
| JP2017119777A | 2017-07-06 | |||
| JP2017197689A | 2017-11-02 | |||
| JP2016065210A | 2016-04-28 | |||
| JP2017008205A | 2017-01-12 | |||
| JP2019052266A | 2019-04-04 | |||
| JP2018511669A | 2018-04-26 |
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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