According to the raw materials, it can be divided into three categories: natural fiber sewing thread, synthetic fiber sewing thread and mixed sewing thread.
1. Natural fiber sewing thread
Cotton sewing thread - sewing thread made from cotton fiber through refining, sizing, waxing and other links. Cotton sewing thread can be divided into no light (or soft line), silk light and wax light. Cotton sewing thread has high strength and good heat resistance, suitable for high-speed sewing and durable pressing. Mainly used for sewing cotton fabrics, leather and high temperature ironing clothes, but the disadvantage is poor elasticity and wear resistance.
Silk thread - filament thread or silk thread made of natural silk, with excellent luster, its strength, elasticity and wear resistance are better than cotton thread. It is suitable for sewing all kinds of silk garments, high-grade woolen garments, fur and leather garments, etc.
2. Synthetic sewing thread
Polyester sewing thread - made of polyester filament or staple fiber, with high strength, good elasticity, wear resistance, low shrinkage and good chemical stability. However, the melting point is low, high speed is easy to melt, the needle eye is blocked, and the thread is easy to break. Pay attention to the selection of the needle. Mainly used for denim, sportswear, leather products, wool and military uniforms, etc., it is currently the most used and most popular sewing thread.
Nylon sewing thread - made of pure nylon multifilament, divided into filament thread, short fiber thread and elastic deformation thread. At present, filament thread is commonly used, which has large elongation and good elasticity, and its tensile length at the moment of breaking is three times greater than that of cotton thread of the same specification. For the sewing of chemical fiber, woolen, leather and elastic garments. The biggest advantage of nylon sewing thread is its transparency. Because the thread is transparent and has good color, it reduces the difficulty of sewing and wiring, and has a broad development prospect. However, it is limited to the fact that the rigidity of the transparent thread on the market is too high, the strength is too low, the stitches are easy to float on the surface of the fabric, and it is not resistant to high temperature, so the sewing speed cannot be too high. At present, this type of thread is mainly used for decals, cutting edges and other parts that are not easily stressed.
Vinylon sewing thread—made of vinylon fiber, with high strength and stable stitch, is mainly used to sew thick canvas, furniture cloth, labor insurance products, etc.
Acrylic sewing thread - made of acrylic fiber, low twist, bright dyeing, mainly used for decoration and embroidery.
3. Mixed sewing thread
Polyester-cotton sewing thread——It is blended with 65% polyester and 35% cotton. It has the advantages of polyester and cotton. It has high strength, wear resistance, heat resistance and good shrinkage rate. It is mainly used for cotton and polyester cotton. High-speed sewing of various types of clothing.
Core-spun Sewing Thread——The filament is the core, and it is made of natural fibers. The strength depends on the core thread, and the wear resistance and heat resistance depend on the outer yarn.