Prime Polymer Co., Ltd.

Motoki Yamada

Minoru Sugawara

Ryoichi Tsunori

Yasuhiko Otsuki

The extruded propylene-based resin composite foam () according to the present invention is provided by extrusion-foaming a molding material containing a propylene-based resin. The propylene-based resin forming the extruded foam has an olefin-based polymer whose loss tangent (tan &#x3b4;) is 0.04 to 100 at a temperature of 298 K and a frequency of 10 Hz. The molding material includes a fibrous filler in an amount of more than 0 mass % and 60 mass % or less of the entirety of the molding material. The extruded composite foam () includes: first extruded foam () whose closed cell content is 40 percent or more and whose expansion ratio is 10 or more; and second extruded foam () whose closed cell content is less than 40 percent and whose expansion ratio is 10 or more.

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Ichihara, Japan

Motoki Yamada