Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
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).
Konishi Hajime
Souma Naoko
Yokoyama Takashi
Matsushita Electric - Industrial Co., Ltd.
Tentoni Leo B.
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