Pbt is a new type of polyester fiber, in which PTA and BDO are esterified directly, and then the condensation reaction is carried out, the melt spinning process is made. The elongation of PBT fiber is 30 % ~ 60 %, not only the elastic and soft properties of polyamide, the fluffy of acrylic fiber, the anti - fouling of polyester, but also the excellent dyeing properties, good durability, dimensional stability and good elasticity and comfortable feeling. 

Pbt fiber is widely used in making swimwear, liankuwa, training clothes, gymnastics clothes, clothing, tennis suits, dance tights, elastic jeans, ski trousers, stockings, medical applications such as bandage and other elastic fabrics. 

The filament can be processed after deformation, and the staple fiber can be blended with other fibers, can also be used for the production of elastic denim yarn, and also can be used to weave imitation wool. 

The tufted carpet made with PBT is reminiscent of the wool carpet. Pbt fiber made of porous insulation, has the characteristics of washable, soft, breathable, thin, comfortable, suitable for winter clothing and bedding.