Sekisui Chemical Co., Ltd.

Masahiro Hamada

Daisuke Mukohata

Yuji Tanikawa

Kazuyuki Yahara

Yozo Toei

Koji Shimonishi

Yuuki Hoshiyama

Akihito Dohi

Kento Sato

Hiroki Matsukawa

Keisuke Fukano

Provided is a multilayer foam sheet excellent in flexibility and mechanical strength in the shear direction. A multilayer foam sheet of the present invention is a multilayer foam sheet including: a base layer including a foam layer, and a surface layer including a foam layer or a resin film and laminated on at least one side of the base layer directly or with another layer interposed therebetween, a low-speed shear modulus being 50 MPa or more, and a 25% compressive strength being 125 kPa or less.

Multilayer foam sheet and adhesive tape

A thermally conductive sheet according to the present invention is a thermally conductive sheet comprising a thermally conductive filler, the thermally conductive sheet having a thermal conductivity of 7 W/m&#xb7;K or more, a 30% compression strength of 1500 kPa or less, and a tensile strength of 0.08 MPa or more. According to the present invention, a thermally conductive sheet having excellent thermally conductive properties, flexibility, and handling properties can be provided.

Thermally conductive sheet

A heat-conducting sheet according to the present invention is a heat-conducting sheet having an initial Asker C hardness of 50 or less, the heat-conducting sheet containing an elastomer resin at the volume proportion of 30 to 70%, and a thermally conductive filler at the volume proportion of 30 to 70%, in which the elastomer resin has a viscosity at 25&#xb0; C. of 3000 Pa&#xb7;s or less, and the elastomer resin has a lamella length of 20 mm or more. According to the present invention, a heat-conducting sheet which has initial flexibility sufficient to exhibit excellent shape conformability and in which residual stress is reduced after compression by applying pressure can be provided.

The foamable composition according to the present invention comprises a copolymer of ethylene, an &#x3b1;-olefin and a non-conjugated diene, a blowing agent, a crosslinking agent, a catalyst and a reaction suppressor, wherein in the foamable composition, the storage elastic modulus at 23&#xb0; C. as measured by a viscoelasticity measuring apparatus is 2&#xd7;10Pa or lower, and the storage elastic modulus after the foamable composition is held at 115&#xb0; C. for 200 seconds is 5&#xd7;10Pa or higher; thereby, a foam body having a low expansion ratio, a low compression strength and a high cushioning property can be produced.

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Shiraoka, Japan

Masahiro Hamada