High-strength thin sheath fibers
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United States of America Patent
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Jun 6, 2006
Grant Date -
May 8, 2003
app pub date -
Jul 1, 2002
filing date -
Jul 3, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fiber comprises a core, a sheath, and an additive that determines a desired physico-chemical parameter of the fiber, wherein the fiber is spun such that without increasing the concentration of the additive the desired parameter increases when the volume of the sheath decreases. Especially preferred additives include chromophores (e.g., a UV absorbing agent), flame-retardants, and adhesion promoters.
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