Flame retardant spiral crimp polyester staple fiber
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United States of America Patent
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Issued Date -
Apr 21, 2005
app pub date -
Aug 13, 2004
filing date -
Aug 15, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Bi-component spiral crimped flame retardant fibers, and methods of manufacture thereof, are provided with side-by-side (10, 12) and core-sheath (14) arrangements of extruded PET materials having differing intrinsic viscosities. This difference leads to differential shrinkage and crimping through heating during manufacture of the fiber arrangement. Only one of the components exhibits flame-retardant qualities, the qualities imparted by flame-retardant additives (20) or polymers. Other embodiments include anti-microbial additives (22) interspersed in at least one of the extrusions.
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