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

Inactive Publication Date: 2019-03-08
NINGBO HUAXING SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the polymer melts on the market are mainly prepared through the following technical approaches. One is to use polyester fibers with different cross-sectional shapes or different properties, and to perform air-induced repeated and continuous network combinations or plying by extending the length of the filaments. Combination of processing methods to achieve, generally using conventional spinning and drawing, high-speed spinning or spinning and drawing a step-by-step process, the processing method has complex processing procedures, long process flow, low processing speed, high production cost, Many disadvantages such as low efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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PUM

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Abstract

The invention relates to a polymerized melt conveying process. The conveying process comprises the following steps: the polymerized melt is conveyed to a spinning box body through a delivery pump, passes a melt filter, a melt booster pump, a melt cooler, a melt distribution valve and a melt distribution pipe in sequence, and is extruded into a melt fine flow after going through a metering pump, aspinning assembly and a spinneret plate in the spinning box body; a bundle wire is obtained by adopting side blow wind cooling and solidifying; and finally, the bundle wire is wound up and takes formafter oiling. The conveying method is simple and convenient, the polymerized melt obtained by conveying has better purity and stable fiber quality with no waste discharged, and achieves the purposes of clean production, energy conservation and emission reduction.

Description

technical field [0001] The invention relates to a polymerization melt conveying process. Background technique [0002] At present, the polymer melts on the market are mainly prepared through the following several technical approaches. One is to use polyester fibers with different cross-sectional shapes or different properties, and perform air-induced repeated and continuous network combinations or plying by extending the length of the filaments. Combination of processing methods to achieve, generally using conventional spinning and drawing, high-speed spinning or spinning and drawing a step-by-step process, the processing method has complex processing procedures, long process flow, low processing speed, high production cost, Many shortcomings such as low efficiency. Contents of the invention [0003] The object of the present invention is to solve the above problems in the prior art, and provide a polymerization melt conveying process with short process flow and simple pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D1/09D01D1/10D01D4/02D01D5/092D01D5/096
CPCD01D1/09D01D1/106D01D4/02D01D5/092D01D5/096
Inventor 熊乃胜
Owner NINGBO HUAXING SCI & TECH
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