Process of making porous fluoroplastics membrane for an air depo

Details Process of making porous fluoroplastics membrane for an air depo Process of making porous fluoroplastics membrane for an air depo

1992-10-05

1994-12-06

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

B29C 6720

Patent

active

053708369

ABSTRACT:
There is provided a method of making uniform porous fluoroplastic membranes having a high Gurley number and a narrow permeability range, this method comprising closing the pores on part of the surface of a fluoroplastic film by compression or by application of an ink. Also provided is a button type air depolarized battery having stable, long-term discharge characteristics over a wide range of load, by employing therein the foregoing porous fluoroplastic membrane having a high Gurley number. The battery structure is similar to that of a conventional battery, but is equipped with the foregoing improved fluoroplastic membrane.

REFERENCES:
Translation of Japan 3-210,762 (Published Sep. 1991).
Abstract of Japan 59-58,758 (Published Apr. 4, 1984).

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