发明名称 |
Plastic skin envelopes for glass bottles and the like |
摘要 |
A method of producing a lightweight, strong, uniform, foamed layer containing tubular film with good opacity which can be heat-shrunk onto an annular substrate such as a glass bottle rapidly and uniformly is accomplished by co-extruding a low density polyethylene and a mixture of an ethylene polymer and a blowing agent under particular conditions and causing the blowing agent to decompose thereby foaming the ethylene polymer.
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申请公布号 |
US4033929(A) |
申请公布日期 |
1977.07.05 |
申请号 |
US19740433169 |
申请日期 |
1974.01.14 |
申请人 |
NATIONAL DISTILLERS AND CHEMICAL CORPORATION |
发明人 |
STILES, CLAUDE J.;TOMO, DANIEL |
分类号 |
B29C44/22;B29C47/00;B29C61/06;B29C61/08;B32B27/32;B65D23/08;(IPC1-7):B29C27/20;B29D27/00;B65D11/16 |
主分类号 |
B29C44/22 |
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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