Skin-core type composite fiber and production method thereof
A composite fiber and sheath-core technology, applied in fiber processing, filament/thread forming, conjugated synthetic polymer artificial filament, etc., can solve the problem of low strength, sheath component reduction, and slow alkali reduction speed, etc. problem, to achieve a good light feeling effect
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Embodiment 1
[0054] Slices of the skin component polymer polyethylene terephthalate (PET) and the core component polymer alkali-soluble copolyester (copolymerization component SSIA: 8mol%, PEG1000: 5wt%, IAP: 7wt%) were dried separately To below 100ppm, the PET chip enters the A screw through the A silo and melts at a temperature of 290°C, and the discharge volume is controlled by the A metering pump, and the alkali-soluble copolyester chips enters the B screw through the B silo to melt at a temperature of 270°C. The discharge volume is controlled by the B metering pump. The sheath-core composition passes through the composite spinning assembly at a temperature of 290°C controlled by the spinning box according to the discharge volume ratio of 50:50, and the as-spun fibers are spun. Cooling and solidification under certain conditions, and then oil the fibers evenly through the oil nozzle to bundle the fibers and reduce friction. The oil supply rate is 0.7%. The fibers that have been oiled a...
Embodiment 2
[0057] Except that the skin component polymer was changed to polybutylene terephthalate (PBT), other conditions were the same as in Example 1. See Table 1 for the specific data of the results after weight reduction of the fibers and fabrics.
Embodiment 3
[0059] Except that the skin component polymer was changed to polytrimethylene terephthalate (PTT), other conditions were the same as in Example 1. See Table 1 for the specific data of the results after weight reduction of the fibers and fabrics.
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