Production of stretched ion-exchange membrane

Details Production of stretched ion-exchange membrane Production of stretched ion-exchange membrane

1987-08-17

1989-10-10

Schofer, Joseph L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Reshaping running or indefinite-length work

2642902, 264294, 264346, B29C 5500, B29B 1700

Patent

active

048730467

ABSTRACT:
A method of producing an ion-exchange membrane suitable for use in an electrolytic cell in which the membrane is expanded by stretching at elevated temperature to increase the surface area per unit weight of the membrane. The membrane may be annealed at elevated temperature, and may be cooled while restrained in the expanded state. The membrane when used in an electrolytic cell remains taut and unwrinkled and leads to reduced voltage operation of the cell.

REFERENCES:
patent: 3801404 (1974-04-01), Druin et al.
patent: 4000057 (1976-12-01), Mrazek et al.
patent: 4124477 (1978-11-01), Tokawa
patent: 4124477 (1978-11-01), Tokawa et al.
patent: 4257997 (1981-03-01), Soehngen et al.
patent: 4617163 (1986-10-01), Smith

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