What is polyester staple spun fiber made of？

What is polyester staple fiber? Polyester staple fiber is a fiber obtained by spinning polyester (ie, polyethylene terephthalate, referred to as PET, polymerized by PTA and MEG) into tow and cutting it. PET is in the form of rice grains or flakes, with various varieties and colors (usually, the main component of beverage bottles we contact a lot is polyester, and it is sliced, generally through the two main processes of pre-spinning and post-spinning, to produce polyester short fibers. According to different needs, polyester staple fibers of different specifications can be cut into different specifications in the post-spinning process, generally 4D-22D, and can be divided into two-dimensional and three-dimensional according to their curling conditions). 75% of polyester is used for chemical fiber, and polyester staple fiber and polyester filament are manufactured according to the requirements of the textile industry.