Methods for producing plate sheaths for storage batteries

摘要

1,026,347. Batteries. L. A. BORIOLO. Oct. 5, 1962 [Oct. 6, 1961], No. 37793/62. Heading H1B. Textile fabric pocket electrode sheaths made predominantly from a polyester resin yarn of the type which is heat shrinkable but not heat hardenable, e.g. polyester derivatives of aromatic carboxylic acid, and particularly homologues of phthalic acid, for example terephthalic acid, and glycols, for example ethylene glycol and other aliphatic glycols, is impregnated with a resin which is hardenable on heating, e.g. vinyl polymers and copolymers such as acrylonitrile copolymers and vinylic esters such as vinyl chloride and polyvinyl chloride, so that when the sheaths are heated the impregnating resin is hardened and the sheaths become self-supporting. The amount of hardenable resin is in the range 2-8% by weight of the finished sheath and is less than 10% by weight of the polyester.