Fine-denier flat yarn and manufacturing method thereof
A manufacturing method and technology of flat yarn, applied in filament/thread forming, textile and papermaking, melting of filament raw materials, etc., can solve problems such as high fiber flatness, improve internal quality, and improve fiber unevenness rate, to ensure the effect of molding requirements
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Embodiment 1
[0016] Such as figure 1 As shown, the fine denier flat yarn described in this embodiment has a monofilament fineness of 0.6-0.9 dtex and a hole number specification of 288.
[0017] The preparation method of fine denier flat silk is as follows:
[0018] (1) Preparation of spinning melt
[0019] Purified terephthalic acid (PTA) and ethylene glycol (EG) enter the slurry preparation tank 3 through the PTA delivery pipeline 1 and the EG delivery pipeline 2 respectively, and then enter the slurry feeding tank 5. Under the action of the motor 4, the The slurry is mixed evenly. After the slurry passes through esterification reactor 6, metering injection pump 7, catalyst feeding device 8, precondensation reactor 9, final polymerization reactor 10 and other equipment, the spinning melt is obtained. The vacuum system device 11 ensures that the pre-polycondensation reaction and the final polycondensation reaction have a suitable vacuum degree. The esterification temperature is 270°C,...
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