Method of making air filtration media by inter-mixing coarse and

Details Method of making air filtration media by inter-mixing coarse and Method of making air filtration media by inter-mixing coarse and

1993-12-16

1995-10-03

Jones, W. Gary

Glass manufacturing

Processes of manufacturing fibers, filaments, or preforms

Composite fiber matrix

65465, 65505, 65454, 156 624, 428303, 428903, C03B 3706

Patent

active

054548489

ABSTRACT:
A fiber glass air filtration media comprises a blanket of glass fibers with about 25% to 35% by weight of the glass fibers being fine glass fibers having an average diameter of less than 3.5 microns and about 65% to 75% by weight of the glass fibers being coarse glass fibers having an average diameter of more than 3.5 microns. The fine and coarse glass fibers are randomly intermingled throughout the blanket. The blanket is formed by producing the fine glass fibers on a first set of fiber generators and the coarse glass fibers on a second set of fiber generators. The fiber generators are laterally aligned across the width of and direct gaseous streams of the glass fibers at a moving collection surface where the blanket is formed. The fiber generators of the first set alternate with the fiber generators of the second set and the glass fibers produced by the two sets of fiber generators are mixed together before being deposited on the collection surface.

REFERENCES:
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patent: 3539316 (1970-11-01), Tretheway
patent: 3690852 (1972-09-01), Smith
patent: 4765812 (1988-08-01), Homonoff
patent: 5290449 (1994-03-01), Heagle
patent: 5342424 (1994-08-01), Pfeffer

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