Dope-Dyed Core-Sheath Type Composite Fiber
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United States of America Patent
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Aug 27, 2015
app pub date -
Feb 25, 2014
filing date -
Feb 25, 2014
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Abstract
A dope-dyed core-sheath type composite fiber contains a core layer (A) and a sheath layer (B) which entirely covering the core layer (A). The core layer (A) contains at least one or a plurality of dye materials with at least 0.1% wt in the core part, composites of the core layer (A) and the sheath layer (B) are both dye-soluble polymers. The fineness of the core-sheath type composite fiber is more than 0.5 Denier-per-filament, and a cross-sectional area ratio of the sheath layer X(B) and X(B) 20%.
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