Polymerized melt conveying process
A melt and process technology, which is applied in the direction of spinneret assembly, filament forming treatment, feeding solution to spinneret, etc., can solve the problems of low processing speed, high production cost, low efficiency, etc., and achieve high purity , The method is simple, the effect of stabilizing the fiber quality
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Embodiment 1
[0017] Polymer melt delivery process, the delivery process includes the following steps: the polymer melt (a mixture of terephthalic acid with a mass fraction of 60% and ethylene glycol with a mass fraction of 40%) passes through a delivery pump, and passes through the melt in turn. Melt filter, melt booster pump, melt cooler, melt distribution valve, and melt distribution pipe are transported to the spinning box with a temperature of 272°C, and through the spinning box with a specification of 2.0ml / r The metering pump, spinning assembly and spinneret are extruded into a thin stream of melt, which is cooled and solidified by side blowing to form a bundle, and finally the bundle is wound and formed after being oiled. Among them, the spinning assembly is composed of a sand cup, a shell, a spinneret, and a melt filter material; the aperture of the spinneret: 0.32mm, the aspect ratio: 3.0; the oiling rate is 0.4%, and the oil used for oiling The pump specification is 0.1ml / r.
Embodiment 2
[0019] Polymer melt delivery process, the delivery process includes the following steps: the polymer melt (a mixture of terephthalic acid with a mass fraction of 55% and ethylene glycol with a mass fraction of 45%) is passed through a delivery pump, and passed through the melt in turn. Melt filter, melt booster pump, melt cooler, melt distribution valve, and melt distribution pipe are transported to the spinning box with a temperature of 270 ° C, and the specification of 2.4ml / r in the spinning box The metering pump, spinning assembly and spinneret are extruded into a thin stream of melt, which is cooled and solidified by side blowing to form a bundle, and finally the bundle is wound and formed after being oiled. Among them, the spinning assembly is composed of a sand cup, a shell, a spinneret, and a melt filter material; the aperture of the spinneret: 0.4mm, the aspect ratio: 3.3; the oiling rate is 0.3%, and the oil used for oiling The dosage pump specification is 0.12ml / r. ...
Embodiment 3
[0021] Polymer melt conveying process, the conveying process comprises the following steps: the polymer melt (a mixture of terephthalic acid with a mass fraction of 65% and ethylene glycol with a mass fraction of 35%) is passed through a conveying pump, and passed through the melt in turn. Melt filter, melt booster pump, melt cooler, melt distribution valve, and melt distribution pipe are transported to the spinning box with a temperature of 275°C, and the spinning box with a specification of 1.6ml / r The metering pump, spinning assembly and spinneret are extruded into a thin stream of melt, which is cooled and solidified by side blowing to form a bundle, and finally the bundle is wound and formed after being oiled. Among them, the spinning assembly is composed of a sand cup, a shell, a spinneret, and a melt filter material; the aperture of the spinneret: 0.23mm, the aspect ratio: 2.8; the oiling rate is 0.5%, and the oil used for oiling The dosage pump specification is 0.08ml / ...
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