1. Variety classification of sewing thread
The sewing thread is made of pure cotton, nylon, polyester-cotton, blended, polyester and rayon, etc. It is generally made by twisting two, three, four, and six strands of single yarn. The direction of twisting can be divided into s twist and z twist Species. Flat-sewing machines generally use z-twist threads, and good-quality s-twist threads can also be used on other sewing machines. Cotton sewing thread has good sewing performance, but it shrinks more than synthetic fiber thread during washing. Its strength, chemical resistance and wear resistance are also worse than synthetic fiber. High-quality mercerized cotton thread is expensive, so cotton sewing is rarely used now. line.
Staple fiber polyester sewing thread has low cost, excellent stitching stability, durability and sewing properties, so it is suitable for sewing all conventional garments. The sewing thread used in the overlock sewing machine is generally cotton thread, but due to the high cost of cotton fiber, it is generally replaced with polyester cotton thread.
The following are the characteristics of various lines:
(1) High-strength polyester thread: It is currently one of the most conventional and widely used sewing thread varieties on the market. It is characterized by good gloss, inelasticity, good color fastness and strong tensile force. It is widely used in sewing of PVC, thick fabrics, nylon leather products.
(2). Fishing net thread (transparent thread): The transparent thread is divided into nylon and polyester monofilaments, which are also different in stretch, hardness, tension and usage. It is commonly used for sewing fabrics, sewing trademarks, suit pants, transparent materials and various craft products.
(3) Pure cotton thread (polyester staple fiber thread): Polyester staple fiber thread is a conventional thread that is widely used and widely used. The surface has a few hairs, and the tensile strength, gloss and wear resistance are inferior to other threads. It is used on thinner fabrics. Pure cotton thread is made of natural cotton combed and singed. It is specially produced for the sewing of pure cotton fabrics.
(4), wax rope line (walking horse line): wax rope line is divided into nylon and polyester materials, the linear shape is better, the tensile strength is particularly strong, and the wax rope line after waxing, often used in thick leather sofas, outdoor appliances, leisure Sewing or hand-sewing thick shoes and other leather products.