A method of producing a synthetic separator for batteries including spaced plates and an acid electrolyte comprising forming a thin sheet of natural fibers of adequate thickness to fit between the spaced plates of the battery to impregnate the sheet with a resin capable of permanently binding the fibers each polymerize the resin and treat the sheet with a chemical wetting agent before or after polymerization of the resin. (Machine-translation by Google Translate, not legally binding)
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