MANUFACTURE OF FOAMED MOLDING OF POLYPROPYLENE TYPE RESIN,申请号JP19830049480-传众专利搜索

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发明名称	MANUFACTURE OF FOAMED MOLDING OF POLYPROPYLENE TYPE RESIN
摘要	PURPOSE:To obtain a foamed molding that is uniform and good in dimensional accuracy, appearance and moldability, by molding prefoamed particles under a condition wherein the relationship between the expansion ratio of the prefoamed particles, the internal pressure and the expansion ratio of the foamed molding is specified. CONSTITUTION:In a method of producing a polypropylene type resin foamed molding wherein a force is filled with prefoamed particles of a polypropylene type resin followed by heating to expand the particles, the molding is effected under a condition wherein the following formula: 0.5+E/100<ep/E wherein (e) represents the expansion ratio of the prefoamed particles, (p) represents the internal pressure that will be applied to the prefoamed particles, and E represents the expansion ratio of the foamed and molded body, is satisfied.
申请公布号	JPS59174326(A)	申请公布日期	1984.10.02
申请号	JP19830049480	申请日期	1983.03.24
申请人	NIPPON STYREN PAPER KK	发明人	YOSHIMURA SHIYOUHEI;KUWABARA HIDEKI;YAMAGUCHI TOORU;SUDOU YOSHIMI
分类号	C08J9/22;B29C44/00;B29C59/00;B29C67/00	主分类号	C08J9/22
代理机构		代理人
主权项
地址

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