Abstract:

Stripping technique for cortex spun cotton yarn package is designed in order to achieve good stripping result and minimize the strength loss of the stripped yarns. The research results show that the stripping results of deep shade-and middle to deep shade-and light shade cotton yarns were influenced by various stripping conditions such as amounts of sodium carbonate and sodium hydrosulfite, stripping time and temperature, and number of stripping. The optimized stripping process conditions were obtained through single factor analysis. For light shade cotton yarns, the optimum conditions include sodium carbonate 2g/L, sodium hydrosulfite 4g/L, treating at 90～100℃ for 40～60 min. In the case of deep shade-and middle to deep shade cotton yarns, sodium carbonate 4g/L, sodium hydrosulfite 6g/L, treating at 100℃ for 60min are reqiured. This stripping technique has good stripping results for cortex spun cotton yarn packages and maximizes the strength retention of the cotton yarns.