| 摘要 |
PURPOSE:The titled raw material yarn providing napped cloth having improved repulsion, improved straight hair properties and deep color tone, having strength, elongation, shrinkage factor in boiling water, birefringence, parameter of crystal completeness and number of interlacement in specific ranges. CONSTITUTION:The aimed raw material yarn having 3-4.5g/d strength, 20-50% elongation, <=3 shrinkage percentage in boiling water, 0.08-0.13 birefringence, <=0.3 parameter of crystal completeness and 1-20 times/m number of interlacement, preferably 2-4d single yarn denier. The raw material yarn is obtained by melting polyester, spinning it from a spinneret, making it travel through a heating zone, cooling it to air temperature and drawing it at 6,500-9,000 high speed by the use of a twisting device such as interlacer, etc.
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