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1. 发明授权

US5558830A Wand purging for electrostatic charging system in flash spinning process 失效
标题翻译：在闪光纺丝工艺中用于静电充电系统的甩丝
公开(公告)号：US5558830A
公开(公告)日：1996-09-24
申请号：US348684
申请日：1994-12-02
申请人： Ervin T. Powers, Jr. , Edgar N. Rudisill
发明人： Ervin T. Powers, Jr. , Edgar N. Rudisill
IPC分类号： D01D5/11
CPC分类号： D01D5/11
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 fluid passes circumferentially over the needles through an annular passage.
摘要翻译：本发明涉及一种用于从用于向丛状薄膜原纤维网施加静电荷的棒的针上扫除灰尘和碎屑的方法和装置。针的针倾向于从聚合物获得灰尘和碎屑，并且通过本发明，灰尘和碎屑被针头上的气态流体流有效地扫除，优选地使得流体通过环形通道周向穿过针。

2. 发明授权

US5075049A Method for improving solvent containment 失效
标题翻译：改善溶剂容纳的方法
公开(公告)号：US5075049A
公开(公告)日：1991-12-24
申请号：US580522
申请日：1990-09-11
申请人： David W. Gillespie , Ervin T. Powers, Jr. , Bela M. Fabuss
发明人： David W. Gillespie , Ervin T. Powers, Jr. , Bela M. Fabuss
IPC分类号： D01D5/11 , D01F6/04 , D01F13/04
CPC分类号： D01D5/11
摘要： A method of improving solvent vapor containment in a process for extruding a solvent-polymer mixture into a process vessel operated substantially at atmospheric pressure while continuously removing solvent vapor and polymer product from said process vessel is disclosed. The improvement involves connecting, by means of a passage, the process vessel with a containment tank, which containment tank is provided at the bottom thereof with means for solvent vapor removal and recovery. The top of the containment tank is provided with an atmospheric vent to ensure that the solvent vapor in the containment tank is at atmospheric pressure. The passage is further provided with a vapor siphon breaker to prevent siphoning of the solvent vapor from the containment tank back into the process vessel.
摘要翻译：公开了一种在将溶剂 - 聚合物混合物挤出到基本上在大气压下操作的工艺容器中的过程中改进溶剂蒸汽容纳的方法，同时从所述工艺容器中连续地除去溶剂蒸气和聚合物产物。该改进涉及通过通道将处理容器连接到容纳罐，该容器在其底部设置有用于溶剂蒸气去除和回收的装置。安全壳的顶部设有大气通风口，以确保安全壳中的溶剂蒸气处于大气压力。该通道还设置有蒸气虹吸断路器，以防止溶剂蒸汽从容纳箱虹吸回到处理容器中。

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