Potential bulky polyester associated bundles for woven or knitted fabric and process for production thereof
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United States of America Patent
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Oct 30, 1990
Grant Date -
N/A
app pub date -
May 15, 1989
filing date -
Aug 31, 1988
priority date (Note) -
Expired
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Abstract
Potential bulky polyester associated bundles or yarns for woven or knitted fabric include spontaneously heat extensible multi-filament A and heat shrinkable multi-filament B. The associated bundles are interlaced at 20-100 interlaces/m. For multi-filament A, the following physical properties apply: <3 denier as a single bundle; 20-80% denier ratio content in associated bundles, wet shrinkage at 100.degree. C. (SHW (A))=0-5%, dry shrinkage at 160.degree. C. (SHD (A))=-15-0%. The properties pertaining to multi-filament B include: fracture tenacity>4 g/denier, denier ratio of 80-29% content in associated bundles, SHW (B)>5-60%. Additionally, SHD (B)-SHD(A)>5%. The invention also relates to processes for forming the bundles and for weaving the bundles into fabric.
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