Fine denier light terylene short fine with luminous function
A bright polyester, functional technology, applied in the field of polyester staple fiber, can solve the problem of no polyester bright staple fiber, etc., and achieve the effect of uniform shrinkage, good dimensional stability, and good gloss
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[0012] The production process is as follows: Intrinsic viscosity IV of ultra-bright polyester chips is 0.64dl / g, add fluorescent agent to the slices at the mixing bin at a ratio of 0.15%, send them to the wet slice bin through pulse conveying, and enter after drying In the screw extruder, the set temperature of the extruder is 270-285 ° C, the melt pressure is > 10 MPa, and the melt temperature is 290 ° C. It is measured by a frequency conversion metering pump. The melt pressure after the pump is 15 MPa and mixed by a high-efficiency static mixer. , into the spinning box for spinning, the melt passes through the circular spinneret, the resulting tow is cooled by ring blowing, oiled, wound and dropped into the barrel to obtain primary fibers, and then bundled, drawn, crimped, relaxed and heat-set , cutting, packing, producing the polyester staple fiber described in the present embodiment.
[0013] In the above process, the ring blowing temperature is 23°C, the wind speed is 0.6...
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