Hand and mechanical properties of nylon high hollow fabrics in relation to the elution characteristics

Abstract

High hollow nylon filaments are normally applied to sportswear garments. The high hollow nylon filament is usually made of a sheath/core type nylon/PET(Poly Ethylene Telephthalate) composite yarn by conjugated spinning. This study examined the spinning and elution characteristics of sheath/core nylon/PET composite filaments according to the caustic reduction conditions, and the fabric mechanical properties that affect the fabric hand after elution were analyzed according to the elution conditions. In addition, hand and physical properties of nylon high hollow fabrics in relation to the elution characteristics were predicted. The elution rate increased with increasing elution time and temperature, and complete elution was observed at a treatment time of 40, 50, 60 min, and a temperature of 110 ℃ at a NaOH concentration of 40 g/l. The hand value of the high hollow fabric treated at an elution temperature of 110 ℃ for 40 min showed the best tactile property, and this elution condition was considered to be the optimum. A high hollowness ratio of 39.5% was achieved under the elution conditions of 40 min and 110 ℃. Good quality high hollow fabric was observed as the washing fastness, 4-5 grade and pilling 4–5 grade under the elution conditions of 110 ℃ and 40 min.