| 摘要 |
<p>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.</p> |
