Sekisui Kaseihin Kogyo Kabushiki Kaisha

Sekisui Plastics Co., Ltd.

Hiroyuki Yamagata

Ikuo Morioka

Mutsuhiko Shimada

Takaaki Hirai

Hideyasu Matsumura

Hiroyuki Ueno

Yukio Aramomi

Minoru Fujishima

The present invention provides a process for producing a molded foam article of a crystalline aromatic polyester resin. The process is characterized by heating the surface temperature of a mold for cavity-molding to the temperature within a range of from (td&plus;35) to (Tg&plus;57)&deg;C. (Tg is a glass transition temperature of the crystalline aromatic polyester resin prepuffs), thereby to mold prepuffs, and cooling the surface of the mold to a temperature not lowered than Tg for at least 20 seconds.

Method for producing foamed-in-mold product of aromatic polyester based resin

A foamed article of styrene type resin, in which base resin particles are styrene type resin particles obtainable by a graft polymerization of a cis-rich polybutadiene with a styrene type monomer, a blowing agent contains n-pentane as its main component and the foamed article shows a density of 0.015-0.040 g/cm.sup.3, an average foam diameter of 60-300 micrometers and a closed cell foam rate of not less than 50%.

Method of molding expandable styrene type resin particles

Expandable styrene type resin particles and foamed articles from said

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Nara, Japan

Hiroyuki Yamagata