Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1975-03-25
1976-12-21
Arnold, Donald J.
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
264DIG47, 264DIG48, 264288, B29D 2700
Patent
active
039989160
ABSTRACT:
A method for the manufacture of an electrically charged fibrous filter from a highly molecular non-polar fiber material wherein a web of the fiber material is continuously fed and stretched. At least one side of the stretched web is homopolarly charged by a plurality of corona charging elements. The charged web material is then fibrillated, collected and processed into a filter.
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patent: 3474611 (1969-10-01), Suzuki et al.
patent: 3644605 (1972-02-01), Sessler et al.
patent: 3691264 (1972-09-01), Asahina
patent: 3880966 (1975-04-01), Zimmerman
Arnold Donald J.
N.V. Verto
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