Classification and characteristics of sewing thread

The most commonly used classification method of sewing thread is the classification of raw materials, including three categories: natural fiber sewing thread, synthetic fiber sewing thread and mixed sewing thread.

⑴ natural fiber sewing thread

a. Cotton sewing thread: Sewing thread made from cotton fiber through refining, sizing, waxing and other processes. High strength, good heat resistance, suitable for high-speed sewing and durable pressing, the disadvantage is poor elasticity and wear resistance. It can be divided into no light (or soft line), silk light and wax light. Cotton sewing thread is mainly used for sewing cotton fabrics, leather and high temperature ironing clothes.

b. Silk thread: long silk thread or silk thread made of natural silk, with excellent luster, its strength, elasticity and wear resistance are better than cotton thread, suitable for sewing all kinds of silk clothing, high-grade woolen clothing, fur and leather clothing, etc. In ancient my country, silk embroidery thread was commonly used to embroider exquisite decorative embroidery.

(2) Synthetic fiber sewing thread

a. Polyester sewing thread: It is the main sewing thread at present, made of polyester filament or staple fiber. It has the characteristics of high strength, good elasticity, wear resistance, low shrinkage and good chemical stability. It is mainly used for the sewing of denim, sportswear, leather products, wool and military uniforms. It should be noted here that polyester sutures have a low melting point and are easy to melt during high-speed sewing, blocking the needle eye and causing the suture to break, so it is not suitable for garments sewed at high speeds.

b. Nylon sewing thread: Nylon sewing thread is made of pure nylon multifilament, which is divided into three types: filament thread, short fiber thread and elastic deformation thread. It has the advantages of high strength and elongation, good elasticity, and its breaking length is three times higher than that of cotton threads of the same specification, so it is suitable for sewing chemical fiber, woolen, leather and elastic clothing. The greater advantage of nylon sewing thread lies in the development of transparent sewing thread. Because the thread is transparent and has good color properties, it reduces and solves the difficulty of sewing and wiring. The development prospect is broad, but it is limited to the rigidity of the transparent thread currently on the market. It is too large, 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, and the sewing speed cannot be too high.

c. Vinylon sewing thread: It is made of vinylon fiber, which has high strength and stable stitches. It is mainly used for sewing thick canvas, furniture cloth, labor insurance products, etc.

d. Acrylic sewing thread: made of acrylic fiber, mainly used as decorative thread and embroidery thread, the yarn twist is low and the dyeing is bright.

⑶ mixed sewing thread  

a. Polyester/cotton sewing thread: made of 65% polyester and 35% cotton blend. It has the advantages of both polyester and cotton, which can not only ensure the requirements of strength, wear resistance and shrinkage rate, but also overcome the defect that polyester is not heat-resistant, and is suitable for high-speed sewing. Applicable to all kinds of clothing such as cotton, polyester/cotton, etc.

b. Core-spun sewing thread: a sewing thread made of filament as the core thread and covered with natural fibers. Its strength depends on the core wire, and wear resistance and heat resistance depend on the outer yarn. Therefore, the core-spun sewing thread is suitable for high-speed sewing and high-strength garments. In addition, sewing thread can also be divided into coils, spools, spools, spools, thread balls, etc. according to the package form, and can be divided into sewing threads, embroidery threads, industrial threads, etc. by application, which will not be described in detail here.

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Post time: Mar-28-2022