Fibrous structures containing immobilized particulate matter
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United States of America Patent
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Jan 23, 1996
Issued Date -
N/A
app pub date -
May 17, 1994
filing date -
Nov 18, 1992
priority date (Note) -
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Abstract
A fibrous structure comprising a composite fiber matrix loaded with immobilized functional particulate and including void spaces forming tortuous flow paths, is provided. The particulate is beneficially distributed in the interior of the fibrous structure in three dimensions and fused to a low melting component of the composite fibers without substantially reducing the available surface area of the particulate. A filtration structure of a composite staple having a nylon sheath and a polyester core, with activated carbon particles bonded to the fiber matrix, and including a microfiber web located within the structure, is specifically disclosed.
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