发明名称 |
Multi-layered laminates of microporous films. |
摘要 |
<p>A multi-layer, microporous polyolefin sheet is provided with at least two microporous polyolefin layers autogenously bonded together to have the same porosity as prior to bonding. The sheet material is formed by blending a polyolefin with an additive which separates on cooling, extracting the additive from each layer with a solvent after cooling and drying the layers in contact to effect bonding. As compared to previous laminated products, the product does not have altered porosity at the interface nor contamination with bonding agents.</p> |
申请公布号 |
EP0365112(B1) |
申请公布日期 |
1994.04.20 |
申请号 |
EP19890306225 |
申请日期 |
1989.06.20 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
MROZINSKI, JAMES S. C/O MINNESOTA MINING AND |
分类号 |
C08J9/26;B01D67/00;B01D69/12;B32B5/32;B32B27/32;C08J5/12;C08J9/28;C08J9/36;H01M2/16;(IPC1-7):B32B5/32;B32B27/24;B32B7/04 |
主分类号 |
C08J9/26 |
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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