Effect of Some Fabric and Sewing Conditions on Apparel Seam Characteristics

Table 8

Regression equations of seam quality characteristics.

Characteristics	Interactive factors	Regression equation	𝑅^2
Seam stiffness (N)	A-D	−0.44+2.30𝑥+0.44𝑦−0.41𝑥^2+0.08𝑥𝑦−0.166𝑦^2	0.76
Seam efficiency (%)	A-B	153−33.27𝑥−50.61𝑦+9.16𝑥^2−15𝑥𝑦+11.5𝑦^2	0.98
	A-D	88−32.44𝑥+17.33𝑦+9.16𝑥^2−0.41𝑥𝑦−3.83𝑦^2	0.97
Drape coefficient (%)	A-B	28.41+49.9𝑥−14.92𝑦−10.80𝑥^2−0.58𝑥𝑦+4.22𝑦^2	0.99
Seam puckering (%)	A-D	−50.9+54.4𝑥+41.81𝑦−11.6𝑥^2−4𝑥𝑦−3.91𝑦^2	0.96

A: blend composition; B: needle thread tension; C: needle size; D: sewing thread linear density.