Knowledge of the sewing machine
2, double-line package seam for the single needle two-lane stitch, mainly used to sew the elastic parts such as elastic shirt at the bottom of the sewing;
4, four-line package seam is a double needle four-line stitch, than the three-line package seam to increase a needle and thread, strength has improved for high-grade clothing clothing piece stitched or stretched more, more intense friction
3, three-line package seam for the single-needle three-line stitch, is commonly used knit clothing commonly used stitch, in particular, some grades are not high clothing clothing piece of suture;
1, single-line package seam for the single needle line, mainly used to sew the blanket side;
Patch sewing can be divided into single, double, three, four, five and six lines.
