发明名称 |
VERFAHREN ZUR HERSTELLUNG VON MATERIALIEN MIT KONTROLLIERTER POROSITÄT |
摘要 |
A method of making a non-woven fibrous media, combining high vapor permeability and low liquid permeability, includes the steps of providing a non-woven fabric formed from fibers that are prematurely crystallized during fabric formation and have a wide heat of fusion range distribution, and calendering the fabric to soften the small polymer crystals therein of low heats of fusion, but not the relatively larger polymer crystals therein of relatively higher heats of fusion, thereby to retain high vapor permeability while providing low liquid permeability. The polymer is preferably isotactic polypropylene. |
申请公布号 |
AT294886(T) |
申请公布日期 |
2005.05.15 |
申请号 |
AT20000939878T |
申请日期 |
2000.06.14 |
申请人 |
FIRST QUALITY NONWOVENS, INC. |
发明人 |
BODAGHI, HASSAN;KAUSCHKE, MICHAEL;TURI, MORDECHAI |
分类号 |
B32B5/26;B32B5/06;B32B38/04;B32B38/06;D04H1/54;D04H1/56;D04H3/14;D04H3/16;D04H13/00 |
主分类号 |
B32B5/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|