What is nylon sewing thread
Nylon sewing thread is made of twisted nylon yarn. The produced thread has a certain tensile force, strong pulling force, luster, high temperature resistance and high speed. Mainly used in leather sewing, such as: shoes, bag industry, sofa industry.
It is the most common leather sewing thread. Nylon sewing thread is used to sew all kinds of clothing materials, and has the dual function of utility and decoration. The quality of the nylon thread not only affects the sewing effect and processing cost, but also affects the appearance quality of the finished product.
Nylon sewing thread: The filament is the core, which is made of outsourcing natural fiber. The strength depends on the core wire. The wear resistance and heat resistance depends on the outer wrapping yarn. It is mainly used for high-speed and solid clothing sewing.
Nylon sewing thread
Nylon sewing thread is used to sew all kinds of clothing materials, and has the dual function of utility and decoration.
The quality of nylon sewing thread not only affects the sewing effect and processing cost, but also affects the appearance quality of the finished product.
Therefore, the general concept, degree of twist, degree of strength and strength of the nylon sewing thread, the classification of the sutures, the characteristics and the main purpose, and the selection of the nylon thread are used for the introduction to facilitate the establishment of standards for the related tests. Determine the general concept of nylon line formation.
Carding (comb)—The yarn that is woven and woven only at one end.
Combing — Yarns that are combed on both ends of the fiber with a comber, with less impurities and more straight fibers.
Blended Yarn - A blend of two or more different fibers.
The single yarn—formed directly on the spinning machine—will disperse once it is retracted.
Strands --- Two or more yarns are tied together, abbreviated as lines.
Sewing thread—a collective name for the sewing thread used for clothing and other sewing products.
New spinning — unlike traditional ring spinning, one end is a free end, such as air spinning, friction spinning, and so on. The yarns are tangled together and have no twist.
Yarn—The index used to express the fineness of yarns, mainly in English, metric, special, and denier.
About nylon sewing thread degree
Definition: Through the twisting of the fibrous structure of the wire, relative angular displacement between the cross-sections of the wire is produced, and the structure of the wire is changed by inclination of the straight fibers and the axis.
Twisting can make the thread have certain physical and mechanical properties such as strength, elasticity, elongation, gloss and handfeel. It is expressed in terms of the number of turns per unit length, commonly used times per inch (TPI) or number of turns per meter (TPM). .
Roundabout: A 360 degree rotation around the axis.
Orientation (S-or Z-direction): When the sliver is vertical, the direction of the helix formed by the rotation around the axis. The tilt direction of the S direction is the same as that of the middle of the letter S, ie the right-hand direction or the clockwise direction. The z direction of the z direction is the same as the center of the letter Z, ie the left hand or counterclockwise.
The relationship between twist and strength: The twist of the thread is proportional to the strength, but after a certain degree of strength, the strength drops instead. If the enthalpy is too large, the yoke angle increases, the luster of the line is poor, and the hand feels bad. When the cymbal is too small, hairiness and feel are loose. This is because the increase in twisting increases the frictional resistance between the fibers and increases the strength of the wire. However, when the twist increases, the axial force component of the sliver becomes smaller, and the stress distribution of the inner and outer fibers is uneven, resulting in inconsistency of fiber breakage.
In short, there is a close relationship between the fracture performance, strength, and twist of the wire. The twist and twist direction are determined according to the needs of the finished product and post-processing, and are generally Z twist.