Filter element comprising glass fibers
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United States of America Patent
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Apr 17, 1990
Grant Date -
N/A
app pub date -
Dec 8, 1988
filing date -
Dec 8, 1988
priority date (Note) -
Expired
status (Latency Note)
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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.
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