FIELD: method and equipment for imparting charge to fibers composed of non-conductive polymer.
SUBSTANCE: method involves spraying free fibers with polar liquid; gathering sprayed free fibers so as to form entangled fibrous nonwoven web, which may contain some amount of polar liquid; drying non-woven web. Owing to spraying of free non-conductive fibers with effective amount of polar liquid before said fibers entangle with one another to form entangled web, and owing to following drying of said web, free fibers become charged. Method does not require special following charging operation.
EFFECT: increased efficiency by providing simultaneous entangling of fibers into web and charging without special processing thereof.
27 cl, 3 dwg, 10 tbl, 31 ex
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