发明名称 |
FLUORORESIN MICROPOROUS FILM, METHOD FOR PRODUCING SAME, AND FILTER ELEMENT USING FLUORORESIN MICROPOROUS FILM |
摘要 |
<p>Provided are a fluororesin microporous membrane having a narrow pore-size distribution and a smaller difference between a mean flow pore size and a maximum pore size, a method for producing the fluororesin microporous membrane, and a filter element that uses the fluororesin microporous membrane. The fluororesin microporous membrane is a porous membrane obtained by forming fluororesin particles into a membrane having a particular shape and particular dimensions, baking the fluororesin particles together by heating the membrane to a melting point of the membrane or higher, and then stretching the membrane. The fluororesin particles each have a structure in which a heat of fusion of a fluororesin constituting an outer surface portion of the particle is lower than a heat of fusion of polytetrafluoroethylene constituting an inside portion of the particle.</p> |
申请公布号 |
EP2837653(A1) |
申请公布日期 |
2015.02.18 |
申请号 |
EP20130775901 |
申请日期 |
2013.04.02 |
申请人 |
SUMITOMO ELECTRIC FINE POLYMER, INC. |
发明人 |
HAYASHI, FUMIHIRO;MURATA, AYA;UNO, ATSUSHI |
分类号 |
C08J9/00;B01D69/00;B01D71/32;B01D71/36;C08J9/24 |
主分类号 |
C08J9/00 |
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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