Direct-spun polyester colored staple fiber production equipment and direct-spun polyester colored staple fiber production method

[0028] A kind of direct spinning polyester colored staple fiber production equipment, such as figure 1 As shown, it includes the melt pipeline and the twin-screw extruder respectively connected by the same metering pump, the twin-screw extruder is connected back to the melt pipeline through the booster pump, and the final melt pipeline is connected to the dynamic mixer and the static mixer in sequence , metering pump and spinning box.

[0029] Specifically, such as figure 2 , 3 As shown, the dynamic mixer includes a barrel 1, a rotating shaft 2 installed on the central axis of the barrel 1 and rotating, the rotating shaft 2 is uniformly provided with pins 3 along its length, and a row is arranged every 90°; each pin 3 One end is fixed on the rotating shaft 2, and the other end protrudes vertically. The inner wall of the barrel 1 and the surface of the rotating shaft 2 are provided with evenly distributed crescent-shaped grooves 4, and the concave surfaces of all the crescent-

[0037] Mixing: The flow rate of the polyester melt pipeline is set to 29.5Kg / min, and 30wt% of the polyester melt is introduced into the twin-screw extruder through a metering pump. ℃ / 280℃ / 280℃ / 280℃, twin-screw speed 60r / min, mix a red organic pigment, polyester wax dispersant and antioxidant 1010 in a certain ratio (100:5:2) and add to the meter , adding polyester melt through a meter, and shearing and blending in a twin-screw extruder;

[0038] Dynamic mixing: re-enter the polyester melt pipeline through the booster pump, and enter the dynamic mixer and static mixer to mix evenly into colored polyester melt;

[0039] Spinning: the colored melt enters the spinning box for spinning, the temperature of the spinning box is 288°C, the number of spinning positions is 17, the fineness of the precursor is 5.34dtex, and the spinning speed is 1085m / min; the effective content of pigment in the fiber is 1.5wt% ;

[0040]Post-spinning: raw silk bundle, drafting treatment, the

[0042] Mixing: The flow rate of the polyester melt pipeline is set to 29.5Kg / min, and 10wt% of the polyester melt is introduced into the twin-screw extruder through a metering pump. The temperature settings of the five zones of the twin-screw extruder are respectively 275°C / 275 ℃ / 275℃ / 275℃ / 275℃, twin-screw speed 50r / min, mix a blue organic pigment, polyethylene wax dispersant and antioxidant 1010 in a certain ratio (100:1:2) and then add and measure The organic pigment is added into the polyester melt through the meter, and sheared and blended in the twin-screw extruder;

[0043] Dynamic mixing: re-enter the polyester melt pipeline through the booster pump, and enter the dynamic mixer and static mixer to mix evenly into colored polyester melt;

[0044] Spinning: the colored melt enters the spinning box for spinning, the temperature of the spinning box is 288°C, the number of spinning positions is 17, the fineness of the precursor is 5.34dtex, and the spinning speed is