FLUORORESIN MICROPOROUS FILM, METHOD FOR PRODUCING SAME, AND FILTER ELEMENT USING FLUORORESIN MICROPOROUS FILM

WIPO Patent Application WO/2013/153989

A1

Provided are a fluororesin microporous film which has a narrow pore size distribution and a smaller difference between the mean flow pore size and maximum pore size, a method for producing the same, and a filter element using said fluororesin microporous film. This fluororesin microporous film is a porous film obtained by molding fluororesin particles, which are constructed such that the amount of heat of fusion of the fluororesin on the outer surface is lower than the amount of heat of fusion of polytetrafluoroethylene on the inside, into a film with a predetermined shape and dimensions, heating the obtained film to above the fusion point thereof to sinter the fluororesin particles, then stretching the film.

WO/2001/040363	EXTRUDED POLYSTYRENE FOAM WITH VICAT TEMPERATURE OVER 100 °C
WO/2021/262467	PROTECTIVE PACKAGING AND METHODS OF MAKING THE SAME
JPH09255805	POROUS SHEET AND ABSORBING MATERIAL PRODUCED BY USING THE SHEET

HAYASHI FUMIHIRO (JP)
OYA AYA (JP)
UNO ATSUSHI (JP)

PCT/JP2013/060086

October 17, 2013

April 02, 2013

Click for automatic bibliography generation  

SUMITOMO ELEC FINE POLYMER INC (JP)

C08J9/00; B01D69/00; B01D71/32; B01D71/36; C08J9/24

JP2010132712A	2010-06-17
JP2009516067A	2009-04-16
JPS62120214U	1987-07-30
JPS374643B1	1962-06-15
JP2009516066A	2009-04-16

See also references of EP 2837653A4

JODAI, Tetsuji et al. (JP)
Tetsuji Ueshiro (JP)

View/Download PDF      PDF Help

Previous Patent: DIEPOXY COMPOUND AND METHOD FOR PRODUCING SAME

Next Patent: SELF-ADHESIVE SURFACE PROTECTION FILM