发明名称 |
MULTI-LAYER EXPANSION-MOLDED ARTICLE OF POLYPROPYLENE RESIN, PRODUCTION PROCESS THEREOF, AND CONTAINER, SHOCK-ABSORBING MATERIAL FOR AUTOMOBILE AND AUTOMOTIVE MEMBER FORMED OF THE MULTI-LAYER EXPANSION-MOLDED ARTICLE OF POLYPROPYLENE RESIN |
摘要 |
A multi-layer expansion-molded article of a polypropylene resin, which is obtained by molding a multi-layer parison comprising a foamed resin layer and a resin layer provided on the outer side of the foamed resin layer in a mold in such manner that at least part of the opposed inner surfaces of foamed resin layer in the parison are fusion-bonded to each other, and has a polypropylene resin layer on the surface of a foamed polypropylene resin layer, wherein a melt tension, MTfr (gf) and a melt flow rate, MFRfr (g/10 min) obtained by measurement to a polypropylene resin forming the foamed resin layer in the expansion-molded article satisfy the relationship [log MTfr>-0.74 log MFRfr+0.66], and a melt tension, MTur (gf) and a melt flow rate, MFRur (g/10 min) obtained by measurement to a polypropylene resin forming the resin layer on the surface of the foamed resin layer satisfy the relationship [log MTur>-1.02 log MFRur+0.47].
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申请公布号 |
US6875484(B1) |
申请公布日期 |
2005.04.05 |
申请号 |
US20000629949 |
申请日期 |
2000.08.01 |
申请人 |
JSP CORPORATION |
发明人 |
KOGURE NAOCHIKA;GOKURAKU HIROYUKI;TAKAHASHI SEIJI;IMANARI DAISUKE;KITAHAMA TAKASHI |
分类号 |
B32B27/00;B29C44/04;B29C47/04;B29C49/04;B29C49/22;B29C49/48;B29L9/00;B29L22/00;B32B5/18;B32B27/32;(IPC1-7):B32B1/00;B32B1/08;B29B9/00 |
主分类号 |
B32B27/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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