Additive-containing synthetic filaments, and yarns and carpets including such filaments
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United States of America Patent
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Nov 10, 1998
Grant Date -
N/A
app pub date -
Mar 3, 1997
filing date -
Mar 4, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Synthetic filaments include a nonaqueous additive system having dispersant-coated pigments physically dispersed in a liquid nonaqueous polymeric carrier. The additive system is most preferably in the form of a particulate paste which can be added in metered amounts (dosed) to a melt flow of the polymeric host material prior to being spun into filaments. By providing a number of additive systems having a number of different additive attributes, and controllably dosing one or more into the melt flow of polymeric material, melt-spun filaments having different additive attributes may be produced on a continuous basis (i.e., without shutting down the spinning operation). The filaments may be included in yarns which are formed into carpet structures.
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Cited Art Landscape
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