Polyester staple fiber, referred to as PSF, is a fiber obtained by spinning polyester (that is, polyethylene terephthalate, PTA for short, polymerized from PTA and MEG) and then cutting it into tow. The products are mainly used in the cotton spinning industry, spinning alone or blended with cotton, viscose fiber, linen, wool, vinylon, etc. The obtained yarn is mainly used for textile and...