REINFORCED ION EXCHANGE MEMBRANE AND A PROCESS FOR PRODUCING THE SAME

摘要

There is disclosed an ion exchange membrane reinforced with a plain woven fabric of a fluorinated polymer having an openness of at least 55 %, the membrane being free of sacrificial strands between adjacent warp strands and between adjacent weft strands of the fabric and free of channels formed by removal of the sacrificial strands. This membrane can be produced by encapsulating a plain woven fabric having an openness of at least 55 % which comprises warp and weft strands fixed to each other at their crossover points, in a film at least two layers of a fluorinated polymer. The present reinforced ion exchange membrane has excellent mechanical properties, and power saving can be attained by the use of the present membrane in performing chloralkali electrolysis.