A kind of production method of fine denier bright flame retardant polyester fdy filament
A technology of flame-retardant polyester and production method, which is used in the manufacture of fire-retardant and flame-retardant filaments, filament/thread forming, artificial filament support, etc. Crystallization, the effect of improving crystallization performance
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Embodiment 1
[0019] A kind of production method of light denier light flame retardant polyester FDY filament, it comprises the following steps:
[0020] (1) By weight, weigh 79% of the glossy PET chips to pre-crystallize and dry; by weight, weigh 6% of the black masterbatch and 8% of the flame-retardant masterbatch to dry, and weigh 6% of the crystallization accelerator , weigh 1% of electromagnetic stress particles;
[0021] (2) Mix the dried glossy PET chips with the dried black masterbatch and flame-retardant masterbatch, and then make a mixed PET melt through a screw extruder;
[0022] (3) After the mixed PET melt is filtered and pressurized, it is distributed to each spinneret assembly by a metering pump to produce nascent fibers;
[0023] (4) blowing and cooling the as-spun fibers in the spinning tunnel, the spinning tunnel is divided into upper and lower parts, the upper part of the spinning tunnel is blown with alkaline cooling air, and the lower part of the spinning tunnel is blo...
Embodiment 2
[0031] A kind of production method of light denier light flame retardant polyester FDY filament, it comprises the following steps:
[0032] (1) By weight, weigh 75% of the glossy PET chips for pre-crystallization and drying; by weight, weigh 7% of the black masterbatch and 8% of the flame retardant masterbatch to dry, and weigh 7% of the crystallization accelerator , weigh 3% of electromagnetic stress particles;
[0033] (2) Mix the dried glossy PET chips with the dried black masterbatch and flame-retardant masterbatch, and then make a mixed PET melt through a screw extruder;
[0034] (3) After the mixed PET melt is filtered and pressurized, it is distributed to each spinneret assembly by a metering pump to produce nascent fibers;
[0035] (4) blowing and cooling the as-spun fibers in the spinning tunnel, the spinning tunnel is divided into upper and lower parts, the upper part of the spinning tunnel is blown with alkaline cooling air, and the lower part of the spinning tunne...
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