Nitto-denko Corporation

Yusuke Yamanari

Makoto Saito

Kenta Jozuka

Naoaki Higuchi

Mitsuhiro Kanada

Akira Hirao

Kenji Furuta

Toru Iseki

Provided is a double-sided pressure-sensitive adhesive tape excellent in impact-absorbing property in the entirety of a wide temperature range, in particular, in a low-temperature region. The double-sided pressure-sensitive adhesive tape of the present invention includes: a base material layer; and pressure-sensitive adhesive layers arranged on both surface sides of the base material layer, wherein an entirety of the double-sided pressure-sensitive adhesive tape has a storage modulus of elasticity E' in a range of from 1.0×10Pa to 1.0×10Pa, which is measured at from −25° C. to 120° C. and a frequency of 1 Hz.

Double-sided adhesive tape

A resin sheet with a pressure-sensitive adhesive layer including the resin sheet. The resin sheet including a main surface A and a main surface B opposite to each other across a thickness 'd', where the resin sheet has a 50% compression load of 20 N/cmor less at 23&#xb1;5&#xb0; C. in a direction of the thickness 'd', which is measured in conformity with a method of measuring a compression hardness described in JIS K 6767:1999; where the resin sheet has a Poisson's ratio at 23&#xb0; C. of 0.10 or less; and the resin sheet has a thickness recovery ratio of 40% or more when compressed by 20% in the direction of the thickness &#x201c;d&#x201d; at 23&#xb0; C.

Resin sheet and adhesive-layer-having resin sheet

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.

Growing community of inventors

Ibaraki, Japan

Yusuke Yamanari