Filter media haing an undulated surface

Details Filter media haing an undulated surface Filter media haing an undulated surface

1995-09-01

1997-08-19

Choi, Kathleen

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428 92, 428171, 428167, 428220, 428156, 428903, D04M 104

Patent

active

056586418

ABSTRACT:
Filter media is provided. The filter media comprises a web of melt blown microfibers having one surface substantially flat and the other surface having periodic wrinkle-like undulations. A method of making the filter media is also provided. The filter media is useful in electret filters when charged.

REFERENCES:
patent: 4375446 (1983-03-01), Fujii et al.
patent: 4555811 (1985-12-01), Shimalla
patent: 4807619 (1989-02-01), Dyrud et al.
Filters and Filtration Handbook, published 1981 by Gulf Publishing Company, Houston, TX.

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