In this study, 100% cotton poplin shirting fabric was procured and the sewing quality in different washing
cycles was evaluated. For the seam strength and tensile strength tests, 5, 10 and 15 washing cycles were
performed on the samples prepared both in the weft and warp directions, in accordance with the standard,
using a laboratory type washing machine. At the same time, the seam efficiency values from the obtained
data were calculated using the formula. The results showed that the highest tensile strength and seam
strength values in both fabric directions were in the unwashed samples. It was observed that these values
tended to decrease with the increase of washing cycles
