发明名称 |
High surface area micro-porous fibers from polymer solutions. |
摘要 |
Fibers are produced from an acetone solution of cellulose acetate by pulling or extruding such material through a spinneret in a dry spinning process. A vacuum is applied to the thus formed fibers after a certain degree of drying. A dried outer skin is formed, and the vacuum causes the solvent inside the skin to explode or pop and exit the fiber along micro-porous paths thereby producing high surface area fibers with micro-porous cavities and internal void volume. Such micro-cavities are particularly useful for retaining solid and/or liquid reagents in a cigarette filter for selective filtration of various smoke components. |
申请公布号 |
ZA200307444(B) |
申请公布日期 |
2004.04.21 |
申请号 |
ZA20030007444 |
申请日期 |
2003.09.25 |
申请人 |
PHILIP MORRIS PRODUCTS INC. |
发明人 |
LIXIN XUE;KOLLER, KENT, B.;QIONG GAO |
分类号 |
A24D3/10;D01D5/247;D01F2/28;D01F2/30 |
主分类号 |
A24D3/10 |
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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