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Effect of stitch per inch (SPI) and yarn count on seam strength of twill fabric

Author Affiliations

  • 1Department of Textile Engineering, Mawlana Bhashani Science and Technology University, Tangail, Bangladesh
  • 2Dept. of Knitwear Manufacturing and Technology, BGMEA University of Fashion and Technology, Dhaka, Bangladesh
  • 3Department of Textile Engineering, Mawlana Bhashani Science and Technology University, Tangail, Bangladesh

Res. J. Engineering Sci., Volume 8, Issue (2), Pages 10-16, May,26 (2019)


Stitch per inch (SPI) and seam strength are complex as well as important parameters in garments production. This study concern with thread count and stitch density's effect on seam strength along with non-stretch and stretch twill fabric. We also find seam efficiency and seam strength factor through this work. Breaking force as well as breaking elongation of fabric were counted by grab method and fabric strength test performed by titan (version 3) by following ISO 13934-2. For seam testing, the fabric samples used sewed by seam stitch type 301 with stitch densities SPI 8, 10 and 12 respectively. Test of seam strength performed by Titan (version 3) according to ISO 13035-2 with grab method. It is observed that SPI and thread count have significant effect on strength of seam.


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