According to raw materials, it can be divided into three categories: natural fiber nylon thread, synthetic fiber sewing thread and mixed sewing thread.
1. Natural fiber thread
Cotton thread --- Sewing thread made of cotton fiber as raw material through smelting, sizing, waxing and other links. Cotton nylon thread can be divided into no light (or soft thread), silk light and wax light. Cotton 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 --- Long silk thread or silk thread made of natural silk has excellent luster, and its strength, elasticity and wear resistance are better than cotton thread. It is suitable for sewing all kinds of silk clothing, high-grade woolen clothing, fur and leather clothing, etc. 2. Synthetic fiber nylon thread
2 Synthetic fiber thread
Polyester thread—made of polyester filament or short fiber, with high strength, good elasticity, wear resistance, low shrinkage rate, and good chemical stability. But the melting point is low, high speed is easy to melt, block the eye of the needle, and easy to break the thread, you should pay attention to the selection of the needle. Mainly used in denim, sportswear, leather products, wool and military uniforms, it is currently the most widely used nylon thread.
Nylon thread—made of pure nylon multifilament yarn, divided into filament yarn, staple fiber yarn and elastic deformation yarn. Also called nylon thread.
Acrylic yarn—made of acrylic fiber, with low twist and bright dyeing, mainly used for decoration and embroidery.
3. Mixed fiber thread
Polyester-cotton nylon thread ———— Made of 65% polyester and 35% cotton blended with the advantages of polyester and cotton, high strength, wear resistance, heat resistance, good shrinkage, mainly used for cotton, polyester cotton And other high-speed sewing of all kinds of clothing.
Core-covered nylon thread—Filament is the core and is made of natural fiber. The strength depends on the core thread. The wear resistance and heat resistance depend on the outer covering yarn. It is mainly used for high-speed and strong clothing sewing.
Selection of suture
Under the specified conditions, the ability of nylon thread to form a good stitch while maintaining certain mechanical properties, called seamability, is a comprehensive indicator for evaluating the quality of the suture. According to the material of the sewing material, thickness, organization e799bee5baa6e59b9ee7ad9431333361303130, color, sewing style, sewing equipment or means, choose the suture and needle that match the type and specifications, generally follow the following principles:
1. Coordinate with fabric characteristics
It can ensure the uniformity of shrinkage rate, heat resistance, wear resistance, durability, etc., and avoid the shrinkage caused by too large differences in thread and fabric. Generally, thin threads for soft and thin materials are equipped with small machine needles, and thick threads for hard and thick materials are equipped with large machine needles.
2. Coordinate with sewing equipment
The lockstitch machine uses left-handed thread, which can be twisted during sewing to maintain the strength of the thread.
3. Coordinate with stitch form
The bag (stretch) sewing machine uses fine cotton thread, the sewing material is not easy to deform and wrinkle, and the chain stitch is beautiful and feels comfortable. Double-thread stitches should use sutures with good extensibility. Crotch seam and shoulder seam should use firm seam. Button eye stitches should choose wear-resistant sutures.
4. Coordinate with clothing type
Special-purpose garments, such as stretch garments, require stretch nylon threads. Fire-fighting suits should use heat-resistant, flame-retardant, and waterproof nylon threads.