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Method for producing high strength fine-denier polyamide fiber 6 fully drawn yarn

A technology of fine-denier nylon and full-drawn yarn, which is applied in the direction of melt spinning, filament/thread forming, feeding solution to the spinneret, etc., which can solve the problems of low production efficiency, high cost, and unstable product quality. Achieve the effects of stable operation, high interlacing pressure, and favorable high-strength drafting

Active Publication Date: 2009-07-08
烟台华润锦纶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has low production efficiency, high cost and unstable product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Adopt the method described in the present invention to produce fine denier polyamide fiber 6 fully drawn silk, concrete steps are as follows:

[0032] 1. Slice melting: the slice enters the screw extruder with electric heating function through the hopper, so that the slice is molten and becomes a spinning melt; the extruder is divided into 4 zones, and the temperature of each zone is controlled at about 250°C;

[0033] 2. Spinning: The melt is extruded from the extruder through the melt pipe, quantitatively pressed into the spinning assembly by the metering pump, sprayed out from the spinneret, and forms a tow in the spinning box. The melt pipe and the upper part of the spinning box are insulated by circulating biphenyl steam, and the temperature is controlled at about 250°C; the spinneret hole is circular, and the length-to-length ratio is 3.0.

[0034] 3. Cooling: The tow is cooled by side blowing through the spinning box, and then further cooled through the tunnel, a...

Embodiment 2

[0039] Adopt the method described in the present invention to produce fine denier polyamide fiber 6 fully drawn silk, concrete steps are as follows:

[0040] 1. Slice melting: the slice enters the screw extruder with electric heating function through the hopper, so that the slice is molten and becomes a spinning melt; the extruder is divided into 6 zones, and the temperature of each zone is controlled at about 260°C;

[0041] 2. Spinning: The melt is extruded from the extruder through the melt pipe, quantitatively pressed into the spinning assembly by the metering pump, sprayed out from the spinneret, and forms a tow in the spinning box. The melt pipe and the upper part of the spinning box are insulated by circulating biphenyl steam, and the temperature is controlled at about 260 ° C; the spinneret hole is trilobal, and the length-to-length ratio is 3.5.

[0042] 3. Cooling: The tow is cooled by side blowing through the spinning box, and then further cooled through the tunnel,...

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Abstract

The invention provides a method for producing fine chinlon 6 fully drawn yarn with high strength which includes steps as follows: (1) chinlon 6 slice enters into a screw extruder with electrical heating function through a storage hopper that makes slice showing melt shape; (2) the melt material is pressed in a spinning subassembly through a metering pump quantificationally, and is spout by a spout plate for forming filament bundle in a spining box body; (3) the filament bundle is cooled by side wind through the spinning box body and is cooled further through a corridor; (4) the cooled filament bundle is oiled by an oil roll; (5) oil in the filament bundle is more uniform and has high amplexus degree through confounding; (6) the filament bundle passes through a first group filament guide roll and a second group filament guide roll for drafting forming, then passes through a third filament guide roll to reel. A grade product produced by the method has average more than or equal to 6.0cN / dtex rupture strength that is higher 22% than the product produced by normal method, and has better transparent sense and visual effect, the produced clothes has better flexible sense and handle sense for wearing cosily.

Description

technical field [0001] The invention relates to a method for producing artificial filaments by a fusion method, more specifically, a production method for high-strength fine-denier nylon 6 full-drawn yarns. Background technique [0002] Nylon 6 filament is a commonly used synthetic fiber and is widely used in the clothing market. It has the characteristics of good hand feeling, wear resistance and high color fastness, while the fine denier full-drawn yarn has the characteristics of soft hand feeling and comfortable wearing. Generally, fine denier filaments are produced by two-step method, that is, the first step is to produce UDY filaments, and the second step is to produce UDY filaments through cold drawing to produce fully drawn filaments, namely DT filaments. This method has low production efficiency, high cost and unstable product quality. [0003] In recent years, some enterprises adopt one-step method to produce nylon 6 fine denier full-drawn yarn process as follows: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D5/092D01D5/096D01D5/253D01D1/09D02J1/08D02J1/22D01F6/60
Inventor 向明王德广薛向群于静牟永强于忠兰杨建春
Owner 烟台华润锦纶有限公司
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