PBT (polybutylene terephthalate) fiber is a new type of synthetic fiber developed in the 1980s. It is formed by condensation of dimethyl terephthalate (DMT) or terephthalic acid (TPA) after esterification with butanediol. Its structure is similar to polyester (PET) and nylon 6 (PA6), thus possessing the characteristics of polyester and nylon. PBT fiber has the characteristics of good elasticity, high dye uptake, and good color fastness, while maintaining ordinary polyester (PET)
Introduction to PBT fiber: PBT fiber is the abbreviation of polybutylene terephthalate fiber, and is the pride of engineering plastics. In 1979, Emperor Corporation of Japan first launched PBT fiber products. With the development of differentiated fibers, the value of PBT as a fiber has gradually been wildly recognized.
PBT fibers have the following characteristics:
1、 It has good durability, dimensional stability, and good elasticity, and the elasticity is not affected by humidity. PBT fibers and their products have a soft feel, good moisture absorption, wear resistance, and fiber curling properties. They have excellent tensile and compressive elasticity, and their elastic recovery rate is better than that of polyester. PBT fibers have special elasticity under both dry and wet conditions, and their elasticity is not affected by temperature changes in the surrounding environment, making them much cheaper than spandex fibers.
2、It has good dyeing performance and can be used for atmospheric boiling dyeing with ordinary disperse dyes without the carrier. The dyed fibers have bright colors, excellent color fastness and chlorine resistance.
3、PBT and PET composite fibers have excellent chemical resistance, light resistance, and heat resistance. PBT and PET composite fibers have fine and dense three-dimensional curls, superior resilience, soft hand feel, and excellent dyeing performance, making them ideal raw materials for simulating wool and down, making them comfortable to wear. Due to the aforementioned characteristics, PBT fibers have received widespread attention in the textile industry in recent years and have been widely used in various fields. Especially suitable for making high elastic textiles such as swimsuits, panties, training suits, gymnastics suits, bodybuilding suits, tennis suits, dance tights, stretch denim suits, ski pants, stockings, medical bandages, etc
The filament yarn of PBT fibers can be used after deformation processing, while short fibers can be blended with other fibers and can also be used for making elastic labor cloth from core-spun yarn. It can also be used for weaving woolen like fabrics. The tufted carpet produced with PBT fiber has a tactile feel similar to wool carpet. The bristle silk can be used as toothbrush silk, etc., and has good anti fuzzing performance. If PBT fibers are used to make porous insulation flocs, they have the characteristics of washability, softness, breathability, lightness, and comfort, and are suitable for winter clothing and bedding filling materials. Our company uses PBT fiber and other cotton staple fibers to spin elastic core spun yarn, covering yarn, etc. year-round, mainly including combed cotton/PBT core spun yarn, viscose/PBT core spun yarn, acrylic/PBT core spun yarn, viscose/nylon/PBT core spun yarn, acrylic/nylon/PBT core spun yarn, wool/viscose/PBT core spun yarn, wool/acrylic/PBT core spun yarn, and combed cotton/PBT covered yarn, viscose/PBT covered yarn, acrylic/PBT covered yarn, etc.
Its elasticity is better than nylon, and its chemical resistance is better than spandex. It can be dyed without a carrier at room temperature and pressure, and has high dyeing fastness, good dimensional stability, anti pilling, and anti-static properties, And the price is much lower than spandex. This fiber can be widely used in knitted and woven fabrics, and can replace spandex in the production of coated silk. Fabric used for high-end sportswear, swimwear, and casual wear. PBT high elasticity yarn has broad application prospects in fields such as sanitary materials and clothing, and is a competitive new product in the future elastic fiber market.
Zhangjiagang Tianyi Textile Patent Invention discloses a PBT filament core-spun yarn, which includes: PBT filament, with a yarn fiber layer wrapped on the outer side of the PBT filament. The PBT filament core-spun yarn in the present invention is acid resistant, chlorine resistant, and has excellent characteristics of "low draft, high elasticity", as well as excellent coloring performance and fabric dimensional stability
PBT silk is used on elastic fabrics such as denim, swimwear, and underwear, and is an upgraded product of nylon wrapped ammonia, cotton wrapped ammonia, and polyester wrapped nitrogen.
Customers could be found in nylon filament products or in customers who dye at room temperature.