The effect of loop length, yarn twist and dyeing process on seam strength of knitted fabrics

Seam strength is a key factor both in terms of aesthetics and the life of the apparel. There are many factors affecting seam strength, some of which are relevant to fabric construction and treatment, and the others are about sewing thread and sewing parameters. This research paper focuses on the effects of fabric construction, sewing parameters and the dyeing process on the seam strength of knitted fabrics. For this purpose. seven single jersey knitted fabrics were produced. differing in loop length and yam twist. The samples were dyed and then sewn with different sewing parameters. The seam strength values were calculated and statistically evaluated. The results showed that fabric construction, sewing thread type and count, stitch density and dyeing process profoundly influence the seam strength of single jersey fabrics. When comparing the effects of dyeing. it was found that dyeing leads to a decrease in seam strength values.