High strength thread is a kind of sewing thread, the thread produced has a certain tensile force, strong tensile force, gloss, high temperature resistance, high speed, mainly suitable for leather sewing, such as: shoes, bags, sofa industry. High strength thread is the most common leather sewing thread.

High strength thread is suitable for stitching all kinds of clothing materials, with practical and decorative double function thread. The quality of high strength not only affects the sewing effect and processing cost, but also affects the appearance quality of finished products. Therefore, the general concept of high-strength line formation, twist, the relationship between temperature resistance and strength, thread classification, characteristics and main uses, the selection of high-strength line are introduced to facilitate enterprises to establish standards for relevant tests, targeted to determine the general concept of high-strength line formation.

Polyester high-strength yarn -- made of polyester filament or staple fiber, it has high strength, good elasticity, wear resistance, low shrinkage and good chemical stability. But the melting point is low, high speed easy to melt, plug the eye of the needle, easy to break, should pay attention to the selection of needle machine. It is mainly used in jeans, sportswear, leather products, wool and military uniforms, etc. It is the most widely used and popular high-strength thread.