发明名称 |
Lightweight construction materials and articles made thereof |
摘要 |
Lightweight construction materials having a low heat shrinking percentage and a high moisture permeability obtained by forming complementary concavoconvex patterns by means of press molding on both surfaces of a sheet of a foamed polyethylene type resin containing a relatively large amount of inorganic calcic filler, cushion made of said construction materials and mattress manufactured by laminating sheets of soft polyurethane foam on the lightweight construction material as core and covering the whole with cloth.
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申请公布号 |
US3940811(A) |
申请公布日期 |
1976.03.02 |
申请号 |
US19730379493 |
申请日期 |
1973.07.16 |
申请人 |
IDEMITSU, KOSAN KABUSHIKI-KAISHA (IDEMITSU KOSAN CO., LTD.) |
发明人 |
TOMIKAWA, MASAMI;ISHITOBI, HIROYUKI;OHKAWA, HIDEO |
分类号 |
B68G5/02;A47C27/14;(IPC1-7):A47C27/15;A47C27/22 |
主分类号 |
B68G5/02 |
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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