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Method for producing full drafting silk of fine denier chinlon 66

A technology of fully drawn yarn and fine denier nylon, which is applied in melt spinning, filament forming treatment, spinneret assembly, etc. and equipment waste, so as to save drafting equipment and sites, improve production efficiency, and improve the rate of A-grade products.

Active Publication Date: 2010-01-27
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

[0003] (1) The two-step method occupies a large area, requires a lot of equipment, and requires a lot of labor, resulting in a waste of personnel, space and equipment;
[0004] (2) The spinning speed is low, and wool and broken ends are prone to occur during production, so the product quality is poor and the production efficiency is low

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The method for producing fine-denier nylon 66 full-drawn yarn, its concrete process steps are:

[0028] (1) The polyhexamethylene adipamide chips are added through the upper part of the drying tower, and nitrogen gas with a temperature of 70 ° C is fed into the lower part of the drying tower to carry out countercurrent circulation drying. The flow rate of nitrogen gas is 200 cubic meters per hour, and the drying time is 40 hours. The water content of the section detected by a differential pressure meter is 1400ppm;

[0029] (2) Send the dried polyhexamethylene adipamide chips obtained in step 1 into a screw extruder with electric heating function. body;

[0030] (3) The spinning melt obtained in step 2 is extruded from the extruder through the spinning melt pipeline with a temperature of 270°C, and quantitatively pressed into the spinning assembly through a metering pump, and the spinning melt is sprayed out from the spinneret The tow is formed in the box, the spinner...

Embodiment 2

[0036] The method for producing fine-denier nylon 66 full-drawn yarn, its concrete process steps are:

[0037] (1) The polyhexamethylene adipamide chips are added through the upper part of the drying tower, and nitrogen gas with a temperature of 90 ° C is introduced into the lower part of the drying tower to carry out countercurrent circulation drying. The flow rate of nitrogen gas is 500 cubic meters per hour, and the drying time is 20 hours. Use a differential pressure meter to detect that the water content of the slice is 1000ppm;

[0038] (2) Send the dried polyhexamethylene adipamide chips obtained in step 1 into a screw extruder with electric heating function. body;

[0039] (3) The spinning melt obtained in step 2 is extruded from the extruder through the spinning melt pipeline with a temperature of 305 ° C, and quantitatively pressed into the spinning assembly through a metering pump, and the spinning melt is ejected from the spinneret The tow is formed in the box, t...

Embodiment 3

[0045] The method for producing fine-denier nylon 66 full-drawn yarn, its concrete process steps are:

[0046] (1) The polyhexamethylene adipamide chips are added through the upper part of the drying tower, and nitrogen gas with a temperature of 80 ° C is fed into the lower part of the drying tower to carry out countercurrent circulation drying. The flow rate of nitrogen gas is 300 cubic meters per hour, and the drying time is 30 hours. The water content of the section detected by a differential pressure meter is 1200ppm;

[0047] (2) Send the dried polyhexamethylene adipamide chips obtained in step 1 into a screw extruder with electric heating function. body;

[0048] (3) The spinning melt obtained in step 2 is extruded from the extruder through the spinning melt pipeline with a temperature of 290°C, and quantitatively pressed into the spinning assembly through a metering pump, and the spinning melt is sprayed out from the spinneret The tow is formed in the box, the spinner...

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PUM

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Abstract

The invention discloses a method for producing full drafting wires of fine denier chinlon 66, comprising the following steps: (1) adding chinlon 66 slices by a drying tower for drying for 20 to 40 hours; (2) transmitting the dried chinlon 66 slices into a screw extruder with the function of electrical heating for forming a silk spinning melting body; (3) quantitatively pressing the obtained silk spinning melting body into a silk spinning component by a metering pump; spraying by a silk spraying plate in a silk spinning box body for forming silk, wherein the hole diameter of the silk spraying plate is from 0.20 to 0.28 mm and the ratio of the length to the diameter is (2 to 4):1; (4) cooling the obtained silk bundle by side blowing wind with more than 70% of humidity; passing through a pre-communicating nozzle after oiling by an oil mouth; spraying out compressed air by the pre-communicating nozzle; treating the silk bundle, wherein the pressure of the compressed air is from 0.5 to 1.2 bar; (5) drafting and shaping the obtained silk bundle by a first group of silk guiding rollers and a second group of silk guiding rollers ,wherein the speed ratio of the second group of silk guiding rollers to the first group of silk guiding rollers is (1.2 to 2.5):1; and (6) bringing the obtained silk bundle to a high-speed rolling machine by a third silk guiding roller for rolling.

Description

technical field [0001] The invention relates to a method for producing fine-denier nylon 66 fiber, in particular to a method for producing fine-denier nylon 66 full-drawn yarn. Background technique [0002] Nylon 66 filament is a commonly used synthetic fiber. Nylon 66: its full name is polyhexamethylene adipamide fiber, which is polymerized from adipic acid and hexamethylenediamine. "Wicking effect" is a unique property of fine-denier nylon fiber fabrics. The lower the fineness of nylon monofilament, the more obvious the wicking and moisture permeability effect, and the softer the handle. Therefore, the fine denier nylon fiber fabric has good sweat-conducting and breathable performance, and can keep the skin dry when wearing it. After sweating, it does not have the cool feeling of cotton fabric, nor does it feel stuffy and sweaty like other synthetic fibers, thereby improving the comfort and hygiene of the fabric. sex. The fabric made of this fiber is very suitable for ma...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/10D01D5/092D01D1/00D01D1/06D01D1/09D01D4/02D02J1/08
Inventor 向明薛向群王德广牟永强于静于忠兰李生强
Owner 烟台华润锦纶有限公司
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