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Patent Searching and Data


Title:
PRODUCTION METHOD FOR POROUS POLYTETRAFLUOROETHYLENE FILM COMPOSITE
Document Type and Number:
Japanese Patent JP3672868
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a method for producing a porous polytetrafluoroethylene (PTFE) film composite having few surface defects by improving the heating method in the step of laminating a PTFE porous film and an air-permeable carrier.
SOLUTION: In the step of laminating an air-permeable carrier 1 and a porous PTFE film 2, a conventional heating method using a heating roll is replaced by heating with an infrared heater 5, thus enabling a porous PTFE film composite having few defects to be obtained.


Inventors:
Takuya Maeoka
Eizo Kawano
Application Number:
JP2001393917A
Publication Date:
July 20, 2005
Filing Date:
December 26, 2001
Export Citation:
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Assignee:
NITTO DENKO CORPORATION
International Classes:
B01D71/36; B01D67/00; B01D69/12; B32B37/10; (IPC1-7): B01D71/36; B01D67/00; B01D69/12; B32B31/20
Domestic Patent References:
JP10076148A
JP11267423A
JP55024575A
JP11137931A
JP11114383A
Attorney, Agent or Firm:
Ikeuchi, Sato & Partners