Nitto-denko Corporation

Shuuhei Yamamoto

Kosuke Morita

Kiichiro Matsushita

Shigeki Muta

Kazumichi Kato

Naoaki Higuchi

Takafumi Hida

Hironori Tamai

Amane Sawamura

Kai Okahara

Provided is a PSA sheet capable of suitably preventing bubble formation caused by outgassing. This invention provides a PSA sheet comprising a PSA layer that forms an adhesive face. In an aging test where the adhesive face is press-bonded to a glass plate and stored at 50&#xb0; C. for 24 hours, the PSA sheet has at least 5% post-aging non-bonding area Sa, with Sa defined as the ratio of all areas non-bonding to the glass plate relative to the total area of the adhesive face. The non-bonding areas have parts linearly extending along the adhesive face.

Pressure-sensitive adhesive sheet

Provided is a PSA sheet capable of providing greater air release properties. The present invention provides a release-linered PSA sheet comprising a PSA sheet and a release liner covering an adhesive face of the PSA sheet. The PSA sheet has a coating layer that partially forms the adhesive face. The release liner has an arithmetic average roughness of 0.1 &#x3bc;m or greater on the PSA sheet side surface.

Release-linered pressure-sensitive adhesive sheet

Provided is a PSA sheet capable of bringing about good air release properties in mobile electronic applications. The present invention provides a PSA sheet for mobile electronics. The PSA sheet comprises a substrate film and a PSA layer provided to at least one face of the substrate film. The PSA layer has a thickness of 20 &#x3bc;m or less. The PSA sheet further comprises a coating layer that partially covers the PSA layer surface. The coating layer has a thickness less than 3 &#x3bc;m.

Pressure-sensitive adhesive sheet for mobile electronics

This invention provides a PSA sheet with which degradation of the appearance after its application is efficiently prevented while showing uniform adhesive properties over the entire sheet with greater ease of application. The PSA sheet provided by this invention is an air-impermeable PSA sheet having an adhesive surface. The PSA sheet comprises a PSA layer forming the adhesive surface. In the adhesive surface, at least one groove is formed. The groove runs in a wavy shape in the adhesive surface.

Growing community of inventors

Ibaraki, Japan

Shuuhei Yamamoto