Influential factors and control methods of hairiness index of cotton knitted fabrics
Using 30 count cotton yarn with different hairiness indices as raw materials,different types of cotton knitted fabrics were prepared by different yarn dyeing methods.The influential factors on the hairiness performance of cotton knitted fabrics was investigated from the aspects of yarn hairiness index,enzyme washing concentration,lifting roller velocity of dyeing vat and meth-ods of singeing and enzyme washing to remove hairiness.The results showed that the hairiness index of the fabric was 3.0-4.0 when the enzyme washing concentration was not higher than 1.0 g/L,and the yarn hairiness index had a significant impact on the hairiness performance of the fabric samples;the higher the yarn hairiness index,the higher the hairiness index of the fabric,and the worse the hairiness performance of the fabric;the hairiness index of the fabric was 3.0,and the yarn hairiness index has little effect on the hairiness performance of the fabric when the enzyme washing concentration was 1.5 g/L;for various types of fabrics,the hairiness performance of the fabric was better at a dyeing vat lifting roller velocity of 300 m/min than that at a dyeing vat lift-ing roller velocity of 200 m/min,and increasing the lifting roller velocity appropriately can improve the hairiness performance of knitted fabrics;the fabric treated by singeing had better hairiness and anti-pilling properties than the fabric treated by enzyme washing,and the singeing process could replace the enzyme washing process in the process of removing hairiness from cotton knit-ted fabrics.
cotton yarnknitted fabricenzyme washingsingeinghairiness index
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