Method for manufacturing a filter of electrically charged electr

Details Method for manufacturing a filter of electrically charged electr Method for manufacturing a filter of electrically charged electr

1977-12-21

1979-12-11

Ball, Michael W.

Gas separation

Means within gas stream for conducting concentrate to collector

55528, 55DIG5, 55DIG39, 264 22, 264230, 264342R, 264DIG48, 428369, B03C 300, B29C 2400

Patent

active

041781570

ABSTRACT:
A method for forming a filter of electrically charged electret fiber material, consisting of a high molecular weight, nonpolar polymeric substance, comprising drawing, charging, and fibrillating a foil of said high molecular weight substance. The fibrillated foil is wound and then crimping is effected.

REFERENCES:
patent: 3500517 (1970-03-01), Dekker et al.
patent: 3608024 (1971-09-01), Yazawa
patent: 3966597 (1976-06-01), Omori et al.
patent: 3998916 (1976-12-01), Turnhout

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