COMPARISON OF FABRIC AND SEAM TENSILE STRENGTH CHARACTERISTICS ON DENIM WITH AND WITHOUT ELASTIC CORE

Abstract

This paper presents a study to compare the influence of structural parameters
of two types of Denim fabrics with the same technical parameters, but only in terms
of weft yarns, on the strength of the seam. One sample uses a cotton weft yarn with
an elastic core and the other uses a cotton weft yarn without elastic. Two styles of
seam used usually in Jeans are 2-needle lapping seam and 2-needle 5-thread
overlock seam with stitch density 4; 5; and 6 stitches/cm. The results show that the
elastic denim fabric has a lower tensile strength in the horizontal direction, so the
seam strength is also lower than that of the non-stretch denim sample. As the stitch
density increases, the seam strength in the longitudinal direction tends to increase
but in the transverse direction tends to decrease. This study is the scientific basis for
choosing fabric structure parameters suitable for sewing technology parameters
when using Denim fabrics with or without elastic core.