Production method of low-size nylon 6 filament

A production method and nylon technology, which can be used in filament/thread forming, single-component polyamide rayon, melt spinning, etc., can solve the problems of unsatisfactory product quality, poor production stability, and low production rate, etc. Achieve the effect of good production stability, high production rate and good product quality

Inactive Publication Date: 2018-01-12
HAIAN ZHONGSHAN SYNTHETIC FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the equipment configuration and production process of the conventional nylon 6 filament production line are used to produce low-denier nylon 6 filament, which has disadvantages such as poor production stability, unsatisfactory product quality, large loss, and low production rate.

Method used

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  • Production method of low-size nylon 6 filament
  • Production method of low-size nylon 6 filament

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Embodiment 1

[0017] The production method of low-denier nylon 6 filament of the present invention, with nylon 6 dry chips as raw material, is made by spinning by melt spinning method; Mainly comprise the following steps:

[0018] 1) Feeding: add nylon 6 dry slices into the silo; the properties of the nylon 6 dry slices are as follows: relative viscosity 2.7±0.05, moisture content lower than 450ppm, hot water extractables content lower than 0.4wt%;

[0019] 2) Preparation of fiber-forming high-polymer melt: Nylon 6 dry chips are prepared into fiber-forming high-polymer melt through the compression section, melting section and metering section (homogenization section) of the extruder;

[0020] The screw extruder adopts: length-to-diameter ratio L / D=28:1, screw diameter 50mm, maximum screw speed 60r / min, extrusion rate 20-50kg / hour; control 10-15 minutes from feeding to melt ;

[0021] 3) Spinning: The molten fiber-forming high-polymer melt is extruded from the spinneret hole of the spinnere...

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Abstract

The invention provides a production method of a low-size nylon 6 filament. The filament is produced by spinning nylon 6 dry slices which are taken as raw materials by virtue of a melt spinning method.The production method mainly comprises the following steps: (1) feeding, namely adding the nylon 6 dry slices into a material bin; (2) preparing a fiber-forming high polymer melt, namely enabling thenylon 6 dry slices to pass through a compression section, a melt section and a metering section of an extruder, so as to prepare the fiber-forming high polymer melt; (3) spinning, namely extruding the molten fiber-forming high polymer melt through spinning holes of a spinning nozzle, and cooling in ambient air or water until the melt is condensed into filaments; and (4) winding, namely sequentially carrying out oiling cooling and antistatic treatment, pre-networking, stretching heating shaping, pre-networking, winding, balancing, examination, packaging and examination procedures on produced fibers, so as to finally obtain the low-denier nylon 6 filament. The production method of the low-denier nylon 6 filament has the technical effects that the production stability is good, the product quality is good, the loss is low, and the finished product rate is high.

Description

technical field [0001] The invention relates to a production method of low denier nylon 6 filament, which belongs to the technical field of chemical fibers. Background technique [0002] Low denier is one of the development trends of nylon 6 filament. Low denier fiber can further improve the quality and value of fiber, and produce high-end clothing fabrics that meet future fashion trends and fashion tastes, especially under the guidance of the trend of environmental protection and health concepts , low-denier fiber fabrics are popular among consumers because of their advantages of easy portability, light weight and environmental protection. [0003] At present, the equipment configuration and production process of the conventional nylon 6 filament production line are used to produce low-denier nylon 6 filament, which has disadvantages such as poor production stability, unsatisfactory product quality, large loss, and low production rate. Contents of the invention [0004] ...

Claims

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Application Information

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IPC IPC(8): D01F6/60D01D5/08D01D5/088
Inventor 王均杨忠国
Owner HAIAN ZHONGSHAN SYNTHETIC FIBER
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