发明名称 |
WAND PURGING FOR ELECTROSTATIC CHARGING SYSTEM IN FLASH SPINNING PROCESS |
摘要 |
This invention relates to a method and apparatus for sweeping dust and debris from the needles of a wand which is for applying an electrostatic charge to a plexifilamentary film-fibril web. The needles of the wand tend to acquire dust and debris from the polymer and by the present invention the dust and debris are efficiently swept away by a gaseous fluid flow over the needles preferably so that the fuid passes circumferentially over the needles through an annular passage.
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申请公布号 |
WO9617117(A1) |
申请公布日期 |
1996.06.06 |
申请号 |
WO1995US15624 |
申请日期 |
1995.12.01 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
POWERS, ERVIN, TOWNSEND, JR.;RUDISILL, EDGAR, NORTH |
分类号 |
D01D5/11;(IPC1-7):D01D5/11 |
主分类号 |
D01D5/11 |
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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