Nitto-denko Corporation

Nitto Denko Materials (malaysia) Sdn. Bhd.

Kenta Jozuka

Naoaki Higuchi

Yasushi Buzojima

Makoto Saito

Hiroki Kigami

Yoshikazu Soeda

Yusuke Yamanari

Masataka Nishiwaki

Naoki Nakayama

Midori Segawa

Naohiro Kato

Kenji Furuta

Ryo Morioka

Kazuki Minoura

Yoshimasa Nishida

Lee Lee Chai

Noboru Yoshida

Min Jie Lee

Takahisa Mizutori

Provided is a PSA sheet highly durable against repeated deformation and suited for use in a flexible device as well. The PSA sheet provided by this invention comprises a PSA layer. The PSA sheet shows a recovery rate at 100% elongation of 70% or higher. The PSA layer shows a displacement of 0.5 mm or greater according to the following holding power test: &#x3c;Holding Power Test&#x3e; At 23&#xb0; C., the PSA layer is applied over a 10 mm wide by 20 mm long bonding area to a Bakelite plate as an adherend; a 1 kg load is applied in the length direction; after one hour, the displacement from the initial position where first applied is determined.

Pressure-sensitive adhesive sheet

Provided is a pressure-sensitive adhesive tape excellent in unevenness followability. The pressure-sensitive adhesive tape of the present invention includes: a base material layer; and a pressure-sensitive adhesive layer arranged on at least one side of the base material layer, wherein the pressure-sensitive adhesive tape has a dimensional change ratio at 23&#xb0; C. of from 0.20 to 0.39.

Pressure-sensitive adhesive tape

The present invention provides an acrylic PSA composition. The acrylic PSA composition comprises an acrylic polymer as its base polymer and at least one species selected among tackifier resins and (meth)acrylic oligomers. The acrylic polymer has a weight average molecular weight higher than 70&#xd7;10. The acrylic polymer has a dispersity (Mw/Mn) below 15.

Acrylic pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet

Provided is a PSA sheet that can be processed with excellent precision while providing excellent light-blocking properties in an in-plane direction and in the thickness direction in an embodiment where the support substrate has a limited thickness. The PSA sheet has a support substrate having a thickness less than 75 &#x3bc;m and a PSA layer placed at least on one face of the support substrate. The PSA sheet has light transmittances of 0.04% or lower in XY and Z directions thereof.

Liquid crystal display and pressure-sensitive adhesive sheet

Provided is a pressure-sensitive adhesive (PSA) sheet having a low relative dielectric constant, satisfactory metal corrosion preventing property, and excellent member holding performance. The present invention provides a PSA sheet having a PSA layer including a base polymer and a rust inhibitor. The base polymer is an acrylic polymer, and monomeric components constituting the acrylic polymer comprise a (meth)acrylate having an alkyl group having 5 or more carbon atoms at an ester end at 50% by weight or more of the monomeric components. The PSA layer has a relative dielectric constant of 3 or less at 300 kHz.

Provided is a pressure-sensitive adhesive (PSA) sheet including a PSA layer formed from a PSA composition including a base polymer, crosslinking agents of two or more species having mutually different types of crosslinkable functional groups, and an azole-based rust inhibitor. Here, one of the crosslinking agents of two or more species is an isocyanate-based crosslinking agent. Monomeric components constituting the base polymer include a carboxy group-containing monomer. The amount of the azole-based rust inhibitor in the PSA layer is less than 8 parts by weight with respect to 100 parts by weight of the base polymer.

Provided is a PSA sheet that provides highly reliable adhesion and great stretch removability from adherends. This invention provides a PSA sheet. The PSA sheet exhibits a shear adhesive strength of 0.5 MPa or greater, a tensile strength at break of 10 MPa or greater, and an elongation at break of 300% or greater.

Pressure-sensitive adhesive sheet for portable electronics

This invention provides a PSA sheet that allows prevention or reduction of damage such as fracture with efficient stretch removability. A stretchable PSA sheet is provided, comprising a PSA layer and a film-like substrate supporting the PSA layer. The PSA sheet has a long section. The long section has a tapered segment that extends, tapering to a first end of the length direction and the film-like substrate has a minimum cross-sectional area larger than 0.30 mmin the tapered segment.

Growing community of inventors

Ibaraki, Japan

Kenta Jozuka