Flexible air permeable non-woven fabric filters
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United States of America Patent
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Sep 10, 1985
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N/A
app pub date -
Jan 9, 1984
filing date -
Jan 9, 1984
priority date (Note) -
Expired
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Abstract
A flexible, air permeable composite highly effective as a highly absorbent fiber filter, suitable for high throughput, low pressure drop applications. The composites and filters use a non-woven fabric substrate, in conjunction with organic polymer fibers, such as polypropylene fibers, formed in-situ from a solvent solution of the polymer, with solid particles such as carbon particles interstitially positioned within the mass, and forming a unique microstructure by the interaction of the flexible non-woven fibers and the polymer fibers. A method of entrapping small sorptive particles within such filters is also provided.
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