发明申请
- 专利标题: Porous Membrane
- 专利标题(中): 多孔膜
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申请号: US14181002申请日: 2014-02-14
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公开(公告)号: US20140232033A1公开(公告)日: 2014-08-21
- 发明人: Gopakumar Thottupurathu , David Kazemi
- 申请人: BHA Altair, LLC
- 申请人地址: US TN Franklin
- 专利权人: BHA Altair, LLC
- 当前专利权人: BHA Altair, LLC
- 当前专利权人地址: US TN Franklin
- 主分类号: B01D67/00
- IPC分类号: B01D67/00
摘要:
A membrane comprises a sheet of expanded polytetrafluoroethylene. The sheet includes a first extrudate made from a first PTFE fine powder resin mixed with processing lubricant at a first lube rate. A second extrudate is made from the first PTFE fine powder resin mixed with processing lubricant at the first lube rate. The first and second extrudates combined into an integrated tape structure that is stretched in first and second directions. The sheet is porous and has a gas permeability of at least 0.1 CFM according to ASTM D737. The sheet has an average Mullen Hydrostatic Burst pressure in the range of 135 psi to 175 psi according to ASTM D751.
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