发明名称 |
Porous nonwoven film-fibril sheet having optical transmission properties |
摘要 |
A lightweight, abrasion resistant nonwoven film-fibril sheet of thermoplastic polymer embossed over substantially the entire area of at least one surface with a pattern comprising from 50 to 1000 small fused regions per square inch which in the aggregate represent from 3 to 25% of the total area of the surface of the sheet, said embossed regions having an average optical transmission of at least 50% and a method of making such sheets.
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申请公布号 |
US4091137(A) |
申请公布日期 |
1978.05.23 |
申请号 |
US19740467093 |
申请日期 |
1974.05.03 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
MILLER, PHILIP EUGENE |
分类号 |
D04H1/54;D04H3/16;D04H13/02;(IPC1-7):B32B7/14 |
主分类号 |
D04H1/54 |
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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