发明名称 |
Porpous PTFE film and a manufacturing method therefor |
摘要 |
A nonwoven web is described that is a thin porous polytetrafluoroethylene membrane consisting essentially of a nonwoven web having a microstructure of substantially only microfibrils fused at crossover points. It is usually strong, is unusually thin, has unusually small pore sizes, but a very high air flow-through. It has a pore size between 0.05 and 0.4 micrometers; a bubble point between 10 and 60 psi; a pore size distribution value between 1.05 and 1.20; a ball burst strength between 0.9 and 17 pounds/force; an air flow of between 20 Frazier and 10 Gurley seconds; a thickness between 1.0-25.4 micrometer; and a fiber diameter ranging between 5 and 200 nm.
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申请公布号 |
US5476589(A) |
申请公布日期 |
1995.12.19 |
申请号 |
US19950403232 |
申请日期 |
1995.03.10 |
申请人 |
W. L. GORE & ASSOCIATES, INC. |
发明人 |
BACINO, JOHN |
分类号 |
B01D39/16;B01D67/00;B01D69/12;B01D71/36;B29C47/00;B29C55/06;B29C55/08;B29C55/14;C08J5/18;C08J9/00;D04H1/42;(IPC1-7):B01D71/36 |
主分类号 |
B01D39/16 |
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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