发明授权
US5653833A Method for integrally joining preformed thermoplastic core elements
especially adapted for the continuous manufacture of melt-blown filter
cartridges
失效
用于整体连接预成型热塑性核心元件的方法,特别适用于连续制造熔喷过滤器滤芯
- 专利标题: Method for integrally joining preformed thermoplastic core elements especially adapted for the continuous manufacture of melt-blown filter cartridges
- 专利标题(中): 用于整体连接预成型热塑性核心元件的方法,特别适用于连续制造熔喷过滤器滤芯
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申请号: US686012申请日: 1996-07-25
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公开(公告)号: US5653833A公开(公告)日: 1997-08-05
- 发明人: Brian Mozelack , Robert D. Connor , Robert J. Schmitt
- 申请人: Brian Mozelack , Robert D. Connor , Robert J. Schmitt
- 申请人地址: MD Timonium
- 专利权人: Memtec America Corporation
- 当前专利权人: Memtec America Corporation
- 当前专利权人地址: MD Timonium
- 主分类号: B01D29/11
- IPC分类号: B01D29/11 ; B29C31/00 ; B29C65/06 ; B29C65/78 ; D01D5/098 ; D04H1/56 ; B01D27/02
摘要:
Apparatus and methods are disclosed whereby elongate preformed thermoplastic elements are friction-welded coaxially in an end-to-end manner so that the core elements are joined integrally to one another. Most preferably, the elongate elements are perforated tubular elements formed of a thermoplastic material which are employed as core elements in the production of cylindrical melt-blown filter cartridges. As such, the integrally joined core elements can be rotated and traversed as a unit relative to a melt-blowing die during the continuous production of indefinite length cylindrical melt-blown filter cartridges.
公开/授权文献
- US4651334A Variable-ratio frequency divider 公开/授权日:1987-03-17