Abstract
It is seen that stretch denim fabrics manufactured by adding elastane fiber are fashionable and highly preferred by consumers. In this study, comparison of seam performance propeties of elastic and regular polyester sewing threads on stretch denim fabrics was investigated that has not been studied before. As the test material, four denim fabrics were used in twill and satin weave structures and containing 2% elastane with different mixing ratios. Elastane core spun polyester and polyester core spun polyester sewing threads were used in sewing processes. The samples were sewn with lock and chain stitches at the stitch densities of 3 and 4 stitches/cm in both warp and weft directions. The results revealed that the elasticity of the sewing thread has an effect on increasing the seam strength but the strength of the sewing thread is more effective on seam strength and seam efficiency property. Higher seam performance values are obtained in weft directions with chain stitches and at 4 stitches/cm.
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