发明名称 |
Infrared solvent stripping process |
摘要 |
A process for stripping chemically bonded spinning solvent from a solution-spun nonwoven web comprising the steps of providing a nonwoven web comprising solvent-laden polymeric fibers having average fiber diameters of less than about 1 micrometer, and transporting the nonwoven web through a solvent stripping zone wherein infrared radiation irradiates the nonwoven web and a solvent stripping fluid impinges on the nonwoven web in order to reduce the solvent concentration of the fibers to less than about 10,000 ppmw.
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申请公布号 |
US7592415(B2) |
申请公布日期 |
2009.09.22 |
申请号 |
US20060640625 |
申请日期 |
2006.12.18 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
HOVANEC JOSEPH BRIAN;FRISK SIMON |
分类号 |
C08G73/10;C08F6/00 |
主分类号 |
C08G73/10 |
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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