In recent years, as a result of the combination of textile materials with different structures and characteristics by using different production
methods, yarn and fabric designs with new features have become important. In this study, the effect of cotton wrapped elastic dual core-spun
yarns containing elastane and filament on the performance properties of denim fabrics was investigated. Denim fabrics were produced that used
in the weft direction of cotton wrapped elastic dual core-spun yarns containing different types filaments and different ratios of elastane in the core.
Performance tests conforming to the standards were applied on denim fabrics. In addition, variance and regression analyzes were carried out using
the MINITAB package program to evaluate the effects on the fabric performance properties that are believed to originate from dual core-spun weft
yarns. The effects of process factors on the fabric properties were expressed using mathematical models.