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⵵/ȣ 2000 / ȣ: V.12,no.2,Apr
1() 2-for-1 PET ʶƮ 繰
2(Ÿ) The Study on the Physical Property of PET Filament in the 2-for-1 Twist Setting Proc
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ʷ Effect of twist-setting time, temperature and cylinder layer for the physical properties of the twist yarn were investigated by separated 9 layer from yarn cylinder. Obtained results were as follow. Shrinkage of the yarn in middle layer shows high value with heat-permeation and in inner\\\'s shows low value because of cylinder hardness. And then yarn thermal shrinkage in outer layers shows more or less high value because twist yarn in the outer layer sets more faster. Concerning to the difference on the yam physical properties among cylinder layers, the changes on physical properties shows significant differences from the 7th layer to the last one. Linear density, T.P.M and initial modulus decreases but snarl index increases.
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