Patent ID: 11937655
Assignee: XUCHANG HONGYANG BIOCHEMICAL INDUSTRIAL DEVELOPMENT CO., LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC A  C  D | IPC A  C

Claim 6:
7. The flame retardant and antistatic regenerated polyester wig fiber of claim 1, wherein the flame retardant and antistatic regenerated polyester wig fiber is prepared by following steps:
(1) taking raw materials in parts by weight, including: 40-50 parts of the regenerated polyester, 20-30 parts of the modified flame retardant regenerated polyester pellet, 15-25 parts of the modified antistatic regenerated polyester masterbatch, 1-2 parts of the colorant, 3-5 parts of the additive, 1.5-3 parts of the dispersant, and 1-1.5 parts of the plasticizer, and drying the raw materials at a temperature of 85° C.-95° C. to remove moisture, a total drying time being 5-7 h, and a moisture content of the raw materials being controlled within 50 ppm;
(2) feeding the raw materials obtained in step (1) into a single-screw extruder for screw melting extrusion to obtain a primary fiber, wherein an aperture of a spinneret is in a range of 0.5 mm to 1 mm, and a temperature of the single-screw extruder is in a range of 240° C. to 260° C.;
(3) cooling the primary fiber obtained in step (2) using a blowing or side blowing manner with a cooling ring with 1 m-5 m at an air temperature of 0-15° C.;
(4) applying oil to the primary fiber obtained in step (3) with an oil roller to obtain an oiled primary fiber, stretching the oiled primary fiber using a drawing machine to obtain a fiber bundle, and collecting the fiber bundle using a winding machine to obtain a fiber roll, wherein a stretching temperature during a stretching process is in a range of 110° C. to 120° C., and a rotation speed is in a range of 500 m/min to 550 m/min; the oil is one or more of a polyether-based polymer, a fatty acid-based polymer, an organic amine salt compound, or an organic silicone compound; and the drawing machine has 6-10 rolls with a draw ratio of 3.2-5.8 times;
(5) placing the fiber roll obtained in step (4) in a bundling frame to guide the fiber bundle into a heat setting box through a traction roller to conduct a heat setting process, wherein a length of the heat setting box is in a range of 2 to 18 m, a working temperature of a heat setting machine is in a range of 170 to 180° C., a feeding speed of the fiber bundle is in a range of 5 m/min to 10 m/min, and a residence time of the fiber bundle in the heat setting box is in a range of 10 to 15 min; and
(6) after the heat setting process is completed, obtaining the flame retardant and antistatic regenerated polyester wig fiber by collecting and packaging the fiber bundle obtained in step (5) through a fiber collecting machine.