Flat multifilament yarn having low opening tendency and good compaction
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United States of America Patent
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May 21, 1996
Grant Date -
N/A
app pub date -
Jul 21, 1994
filing date -
Jul 23, 1993
priority date (Note) -
Expired
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Abstract
Described is a flat multifilament yarn with minimal opening tendency of the mutually bound-together filaments, expressed by the quantity VS(K.sub.F)>42% and with good compaction, expressed by the quantity (VG.sub.mean /VG.sub.max) * 100%>45% the VG quantities being degrees of intermingling determined using the Rothschild needle tester model 2040, VG.sub.mean being the arithmetic mean of 20 needle test measurements, and VG.sub.max being the maximum value of 20 needle test measurements. VS(K.sub.F) is the intermingling stability at a given total yarn tension K.sub.F determined by measuring the opening tendency of the flat multifilament yarn under dynamic-mechanical stress by a specific method.
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