Mitsubishi Chemical Corporation

Mitsubishi Kasei Corporation

Katsuhiko Sugiura

Naoyuki Uchida

Shogo Koga

Kazuma Inoue

Yukio Kato

Hiroshi Mitani

Masashi Miura

Motoyuki Miyoshi

Kazuhisa Kojima

Kohji Uehara

Naomi Iketani

An object of the present invention is to provide a sound-blocking sheet member that is relatively lightweight, has high sound-blocking performance overwhelming the law of mass action, and is excellent in terms of manufacturability and durability. The sound-blocking sheet member includes at least a sheet and a plurality of resonance portions. The resonance portion is provided in contact with a sheet surface of the sheet, and the resonance portion includes a weight portion and a base portion. The weight portion is supported by the base portion and has a larger mass than the base portion, and the weight portion has a penetration portion. The base portion is in contact with a surface on a resonance portion front end side of the weight portion and covers the weight portion.

Sound-blocking sheet member, sound-blocking structure using same, and method for manufacturing sound-blocking sheet member

Vibration control and noise insulation material

A film for a resistance layer for an electric-thermal print system, which comprises from 50 to 85% by weight of a polycarbonate resin and from 15 to 50% by weight of carbon black, and which further contains from 0.1 to 30 parts by weight, relative to 100 parts by weight of the polycarbonate resin, of an elastomer.

Film for a resistance layer for an electric-thermal print system

Growing community of inventors

Tokyo, Japan

Katsuhiko Sugiura