Filter element comprising glass fibers
AssigneeJames River Corporation
InventorHoman B. Kinsley, Jr.
Life of this patent
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Abstract
Provided is a strong, flexible filter element comprising a wet laid non-woven element of glass fibers, synthetic short fibers, and polymer fibrids having a softening point below the softening point of the short fibers. In the filter element, the glass fibers are bound to the synthetic short fibers, e.g., aromatic polyamide short fibers such as poly(m-phenylene isophthalamide) short fibers, by the polymer fibrids, e.g., cellulose acetate fibrids, which act as a binder. The filter element exhibits excellent chemical resistance and a usefulness in removing particulates from gases at temperatures below 400.degree. F.
Claims19
A filter element of high strength and good flex and permeability comprising a non-woven mat of (i) glass fibers, (ii) synthetic short fibers and (iii) polymer fibrids having a softening point below the softening point of said short fibers, said short fibers being bound to said glass fibers by the polymer fibrids.
A filter element of high strength and good flex useful in the filtration of particulates from a medium at temperatures below 400.degree. F., said filter element comprising a non-woven mat of (i) glass fibers, (ii) aromatic polyamide short fibers and (iii) polymer fibrids, said short fibers being bound to said glass fibers by use of said polymer fibrids as a binder, and said polymer fibrids being cellulose acetate.
Dependencies are inferred from the claim text.