Raw materials can be divided into the nylon sutureof natural fibers, synthetic sewing thread and mixed sewing thread three categories. A nylon line of natural fiber cotton nylon line - the cotton fiber as raw material by refining bleaching, sizing, waxing and other links made of sewing thread. Cotton, nylon line can be divided into no light (or cords), silk and light and the light of wax. Higher cotton nylon line strength, good heat resistance, suitable for high-speed sewing and durable press. Mainly used for cotton fabric, leather and high temperature ironing, sewing, while the disadvantage is that the flexibility and wear resistance. Silk line --- filament wire made of natural silk or silk line, has an excellent luster, strength, elasticity and wear resistance are better than cotton. Suitable for sewing different kinds of silk garments, high-grade woolen clothing, fur and leather clothing and so on. 2 polyester nylon suturesof synthetic fibers, nylon line - polyester filament or staple fiber manufacturing, high strength, good elasticity, wear, shrinkage rate, good chemical stability. However, low melting point, high speed and easy to melt, plug the eye of a needle, easy to break, you should pay attention to the selection of the needle. For jeans, sportswear, leather products, wool and uniform, is currently the most used and most popular nylon line. Nylon nylon line --- Pure nylon multifilament yarn manufacturing, sub-filament line, the line of staple fiber and elastic deformation line. At present, the commonly used filament line, it has elongation, flexibility, greater than the length of the tensile fracture moment with the specifications of cotton three times. For chemical fiber, wool fabric, leather and elastic garment sewing. The biggest advantage of nylon sewing thread is transparent, this line is transparent, the color better, thus reducing the the sewing wiring difficulties and broad development prospects. However limited to the transparent line on the market stiffness is too large, the intensity is too low, stitch easy to float on the surface of the fabric, combined with high temperature, the sewing speed can not be too high. Such line is mainly used as decals, stick side, not easy to force the site. Polyvinyl alcohol fiber nylon line --- made of polyvinyl alcohol fiber, high strength, smooth trace, mainly for sewing thick canvas, furniture, cloth, labor supplies. Acrylic nylon line --- made from acrylic fiber, low twist, bright staining is mainly used for decoration and embroidery. Mixed nylon line polyester nylon line --- 65% polyester 35% cotton blended, both the advantages of polyester and cotton, high strength, wear resistance, heat shrinkage and good, mainly for all kinds of clothing such as cotton, polyester, high-speed sewing. Cored nylon line --- filament core, outsourcing made of natural fibers, the strength depends on the wire, wear and heat resistance depends on the outsourcing yarn, mainly for high-speed and a solid garment sewing.