What is the process of making PSF(polyester staple fiber)?

Drying the flakes to less than 80 ppm(parts per million), then feed to the extruder, the filter will remove the contamination in the flakes, then go through the metering pump and spinning beam, there is a device to cool the fiber, after quenching, the applicant is oiled for the fiber, the fiber can is used to collect the fiber. Use a creel stand the collect the tow again, there is three drawing machines to get the fiber at the right fitness, then make the fiber crimped, the fiber will cool down after the crimper and then cut. Then the fiber will be sent to the baler for packing.