发明名称 |
Process for producing a steam-sterilizable porous polyolefin membrane and polyethylene membrane steam-sterlizable at 134 DEG C. |
摘要 |
Process for producing a steam-sterilizable porous polyolefin membrane with a porosity of at least 20% and a shrinkage of 4% at most in every direction in the plane of the membrane in steam sterilization by subjecting a porous stretched film to a shrink treatment at a temperature equalling at least the sterilization temperature, but below the melting point of the polyolefin, in which treatment the permitted shrinkage is at least 95% of the critical shrink factor of the film in every direction in the plane of the film and a membrane of polyethylene with an intrinsic viscosity of at least 5 dl/g, steam-sterilizable at 134 DEG C.
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申请公布号 |
US5843358(A) |
申请公布日期 |
1998.12.01 |
申请号 |
US19960658554 |
申请日期 |
1996.06.05 |
申请人 |
DSM N.V. |
发明人 |
FORTUIN, HENRICUS M.;STOKMAN, PETRUS H.M. |
分类号 |
B01D67/00;B01D71/26;B29C55/00;B29C71/02;(IPC1-7):B29C71/02 |
主分类号 |
B01D67/00 |
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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