How does the spinning temperature affect the production of intermingled PP FDY?

Production process of intermingled PP FDY: blending-feeding-screw extruder-melt filter-spinning box-side blowing-spinning duct-oiling-guiding guide-the first draft heat roller-guiding -Second draft heat roller-wire guide-third draft heat roller-wire guide-fourth draft heat roller-wire guide-fifth draft heat roller-network device-winder-package wire

Spinning temperature directly affects the rheological properties of polypropylene, the degree of degradation of polypropylene, and the pre-orientation of primary fibers. Therefore, the temperature of spinning intermingled PP FDY is the main process parameter in melt molding. When the spinning temperature is too high, the melt viscosity is reduced too much, and it is easy to produce head yarn and wool during spinning; at the same time, the melt viscosity is too low and the fluidity is large. Silk phenomenon. The spinning temperature is too low, the melt viscosity is too large, and the reeling is difficult and uneven, resulting in melt fracture when the spinneret is stretched and cannot be wound. In severe cases, full head breaks and hard filaments may occur.

Guangdong Modern High-tech Fiber Co., Ltd. is a manufacturer specializing in R & D, production and sales of polypropylene fibers. Since its establishment, it has developed steadily. At present, it has established more than 70 polypropylene FDY production lines, 8 POY production lines, 2 DTY production lines, and several other production research and development equipment. In the previous year, various specifications of polypropylene filaments exceeded 24,000 tons, which has become the current domestic practice Manufacturer of polypropylene filament yarns with large output.