High efficiency particulate air filter

Gas separation – Specific media material – With coating – impregnant – or bonding agent

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Details

55528, 162145, 162156, 162168R, 162169, 428283, 428288, 428903, 428297, 428402, 428407, B01D 3914

Patent

active

042869773

ABSTRACT:
An air filtration mat formed from a mixture of certain proportions of glass micro-fibers, an intimate blend or cobeat of cellulose fibers and micro-bits of an expanded, non-brittle polystyrene, lower polyolefin, or flexible polyurethane, and an organic binding agent such as polyvinyl alcohol or aqueous acrylic or vinyl chloride polymer emulsions distributed uniformly throughout the glass micro-fibers and blend of cellulose fibers and micro-bits. The glass micro-fiber component is made up of an array of fibers having various dimensions, which are mixed in specific proportions. The filter mat may optionally contain fibers of a fiber-forming terephthalate polyester to enhance the wet strength of the web during processing.

REFERENCES:
patent: 3016599 (1962-01-01), Perry
patent: 4182649 (1980-01-01), Isgur et al.

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