عنوان مقاله [English]
Bagging is an irreversible three-dimensional deformation that occurs during the consumption of clothing. This phenomenon is visible in the knees of pants and elbows. The force is applied to the fabric repeatedly or for a long time by the moving parts of the body.
In this research, the effect of the number of bagging cycle on the seam strength has been investigated. For this purpose, warp-weft fabrics with different weft densities were produced. Lock stitch sewing, which is the most common sewing in the clothing industry, was used to create the seam. Specimens were prepared with fixed sewing characteristics in the direction of warp and weft fabric. In order to investigate the effect of the number of loading cycles, the cycling forces of zero, 40, 80, 120, 140, 160 and 200 were applied to the samples and then the seam strength was measured using a strength tester. The results show that with increasing the loading cycle, the elongation of the seam decreases and also, the higher the density of the fabric weft, the more the elastic area of the sewing thread increases.