The Effect of Fiber Types Used as Core/Wrapper Fibers in Multi-component Yarns on the Stretch Properties of Denim Fabrics

Abstract

Denim fabrics are one of the important research fields in the textile industry. Super stretch denim fabrics that have more than 30% elasticity are among the hottest trends in denim fabrics recently. The entire process chain, from raw material to finished product, must be considered when developing fabrics with high stretch values. Previously, only 100% cotton yarn was used in the denim industry; however, some new generation yarn types are currently being used. Different multi-component core-spun yarns were produced and used as a weft yarn in five different denim fabrics. The study aimed to investigate the influence of fiber types used as core (EL: elastane, PBT: polybutylene terephthalate, T400®: PET/PTT) or as wrap fibers (cotton, modal, EME: Elastomeric multi ester) into the new developed core-spun yarns, on the stretch properties of denim fabrics. Experimental and statistical results show that fiber types used as core/wrappers in the multi-component weft yarns significantly affect all stretch properties of denim fabrics. Fabrics composed of weft yarn with the EL+T400® in the core and EME/CO in the wrapper gave the best results in stretch properties.

Keywords

• multi-component yarn
• denim fabric
• fabric properties
• stretch
• elasticity
• elongation
• growth
• shrinkage