Nitto-denko Corporation

Takuma Ogawa

Shinji Inokuchi

Tetsuya Hirose

Kenichi Nishikawa

Naoaki Higuchi

Tokuhisa Kosaka

Hiroyuki Tsubaki

Eiji Yamanaka

Provided is a PSA sheet that shows high peel strength to low polar adherends while having excellent flexibility. This invention provides a PSA sheet that comprises a PSA layer (A) constituting an adhesive face and a viscoelastic layer (B) supporting the PSA layer (A). In the PSA sheet, the viscoelastic layer (B) comprises hollow particles or have bubbles. The PSA layer (A) comprises an acrylic polymer (a) as the base polymer. The copolymerization ratio of an acidic group-containing monomer in the acrylic polymer (a) is 5% by weight or lower.

Pressure-sensitive adhesive sheet

A joined body includes: an adherend; a primer layer provided on the adherend; and a pressure-sensitive adhesive layer provided on the primer layer. The primer layer contains, as an effective component, at least one of chlorinated polypropylene and chlorinated polyethylene and an amount of the effective component per unit area is 0.5 [mg/cm] or less. The surface of the adherend may be formed of at least one of polypropylene (PP), polyvinyl chloride (PVC), and ethylene-propylene-diene rubber (EPDM).

Joined body and method of producing joined body

Growing community of inventors

Ibaraki, Japan

Takuma Ogawa