发明名称 |
Process for producing porous polytetrafluoroethylene film. |
摘要 |
<p>A porous PTFE film having a thin thickness and good permeability is produced by coating an emulsion of polytetrafluoroethylene on a substrate surface, in particular, a porous polytetrafluoroethylene substrate which has not been heated at a melting point of unsintered polytetrafluoroethylene or higher, heating the coated substrate at a temperature not lower than a melting point of sintered polytetrafluoroethylene to semi-sinter polytetrafluoroethylene, optionally removing the semi-sintered polytetrafluoroethylene film from the substrate, and then stretching the semi-sintered film at least in one direction.</p> |
申请公布号 |
EP0516121(A2) |
申请公布日期 |
1992.12.02 |
申请号 |
EP19920109053 |
申请日期 |
1992.05.29 |
申请人 |
DAIKIN INDUSTRIES, LIMITED |
发明人 |
TAMARU, SHINJI;NISHIBAYASHI, HIROFUMI;YAMAMOTO, KATSUTOSHI;TANAKA, OSAMU;INOUE, OSAMU |
分类号 |
B01D67/00;B01D69/12;B01D71/36;B29C41/00;B29C55/00;B29D7/01 |
主分类号 |
B01D67/00 |
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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