发明名称 |
IMPROVED BATTERY SEPARATOR AND METHOD OF FORMING SAME |
摘要 |
A sheet product and method of forming the sheet product suitable for use as a battery separator. The method comprises forming a mixture of a thermoplastic polymer and fluid having a high vapor pressure, shaping the mixture into a sheet material and subjecting the sheet material to stretching/fluid vaporization at high temperature to form an intermediate material having a ratio of percent fluid to percent polymer crystallinity of between 0.15 and 1 followed by a second stretching/fluid vaporization at a lower temperature while removing a portion of the remainder of the fluid from the sheet. The resultant sheet is annealed and remainder of fluid removed to form a sheet product having a thickness comprising a stratified structure of small and larger pore layered configuration across its thickness. |
申请公布号 |
WO2012138398(A1) |
申请公布日期 |
2012.10.11 |
申请号 |
WO2012US00107 |
申请日期 |
2012.02.24 |
申请人 |
APOROUS, INC.;YEN, WILLIAM WINCHIN |
发明人 |
YEN, WILLIAM WINCHIN |
分类号 |
H01M2/16;H01M10/26 |
主分类号 |
H01M2/16 |
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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