Title:
DOUBLE-SIDED ADHESIVE TAPE FOR PORTABLE ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/041313
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a double-sided adhesive tape for a portable electronic device, with which a component that is part of a portable electronic device can be secured to a device main body by adhesion, a substrate of which will not break even if a strong impact is applied, and which can suppress peeling of the component from the device main body. The present invention is a double-sided adhesive tape for a portable electronic device, comprising adhesive layers on both sides of a substrate, wherein: the substrate comprises a polyolefin foam with a fracture elongation in the machine direction (MD) at 23°C of 480-580%, an apparent density of 0.4-0.6 g/cm3, and a 25% compression strength in the thickness direction of 200-600 kPa; and at least one of the adhesive layers comprises 30-50 parts by weight of a tackifier resin, and 100 parts by weight of an acrylic copolymer that has a weight-average molecular weight of 400,000-1,000,000 and that is obtained by copolymerizing a monomer mixture containing butyl acrylate and 2-ethylhexyl acrylate.
Inventors:
IWAI YUKI (JP)
UCHIDA NORIYUKI (JP)
UCHIDA NORIYUKI (JP)
Application Number:
PCT/JP2014/074823
Publication Date:
March 26, 2015
Filing Date:
September 19, 2014
Export Citation:
Assignee:
SEKISUI CHEMICAL CO LTD (JP)
International Classes:
C09J7/26; C09J11/08; C09J133/08
Domestic Patent References:
| WO2013099755A1 | 2013-07-04 |
Foreign References:
| JP2011168727A | 2011-09-01 |
Attorney, Agent or Firm:
YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)
Patent business corporation Yasutomi international patent firm (JP)
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