FIELD: electronic, food, pharmaceutical and other industries; diaphragm filtering elements. SUBSTANCE: filtering element is formed by placing filtering diaphragm between backing layers, corrugating the pack, thermofixing the corrugations, sealing longitudinal seam by welding extreme corrugations of backing inner layer and filtering diaphragm with subsequently placing extreme corrugations of backing outer layer on welded seam, soaking the blank in distilled water with subsequent drying, final cutting blank length and sealing end faces. EFFECT: improved quality of element, increased output of quality product. 2 ex
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