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Production process of polyamide 6 special-shaped air-textured yarns with high strength and low boiling shrinkage

A production process and high-strength technology, applied in the manufacture of hollow filaments, chemical characteristics of fibers, heat treatment of artificial filaments, etc., can solve the problems of low strength, poor boiling shrinkage performance, and unsatisfactory air-varying yarn performance, and achieve high the effect of strength

Active Publication Date: 2011-11-23
GUANGDONG XINHUI MEIDA NYLON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the performance of the air variable yarn produced by the existing air variable yarn production process is not ideal, especially the low strength and poor boiling shrinkage performance

Method used

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  • Production process of polyamide 6 special-shaped air-textured yarns with high strength and low boiling shrinkage
  • Production process of polyamide 6 special-shaped air-textured yarns with high strength and low boiling shrinkage
  • Production process of polyamide 6 special-shaped air-textured yarns with high strength and low boiling shrinkage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A production process of high-strength and low-boiling shrinkage nylon 6 special-shaped air-variable yarn (see figure 1 with figure 2 ), including the following steps:

[0022] 1) Add nylon 6 slices (relative viscosity 3.0, moisture content lower than 0.05ppm) into the storage tank 2 through the slice hopper 1, and the material in the storage tank 2 is fed into the extruder 3, and the temperature of each section of the extruder 3 is respectively 260°C, 270°C, 280°C, 290°C, 300°C;

[0023] 2) The extruder 3 transports the molten material to the metering pump 51 in the spinning box 5 through the melt distribution pipe 4, and the metering pump 51 accurately injects the material into the spinning assembly 52 in the spinning box 5, and the material is sprayed The wire plate 521 forms a thin stream of melt; wherein, the shape of the nozzle holes in the spinneret is ten-lobed;

[0024] 3) The melt stream passes through the thermostat 6 (the temperature is controlled at 190~...

Embodiment 2

[0027] A production process of high-strength and low-boiling shrinkage nylon 6 special-shaped air-variable yarn (see figure 1 with figure 2 ), including the following steps:

[0028] 1) Add nylon 6 slices (relative viscosity 3.2, moisture content lower than 0.05ppm) into the storage tank 2 through the slice hopper 1, and the material in the storage tank 2 is fed into the extruder 3, and the temperature of each section of the extruder 3 is respectively 260°C, 270°C, 280°C, 290°C, 300°C;

[0029] 2) The extruder 3 transports the molten material to the metering pump 51 in the spinning box 5 through the melt distribution pipe 4, and the metering pump 51 accurately injects the material into the spinning assembly 52 in the spinning box 5, and the material is sprayed The wire plate 521 forms a thin stream of melt; wherein, the shape of the nozzle holes in the spinneret is five-lobed;

[0030] 3) The melt stream passes through the thermostat 6 (the temperature is controlled at 190...

Embodiment 3

[0033] A production process of high-strength and low-boiling shrinkage nylon 6 special-shaped air-variable yarn (see figure 1 with figure 2 ), including the following steps:

[0034] 1) Add nylon 6 slices (relative viscosity 3.6, moisture content lower than 0.05ppm) into the storage tank 2 through the slice hopper 1, and the material in the storage tank 2 is fed into the extruder 3, and the temperature of each section of the extruder 3 is respectively 260°C, 270°C, 280°C, 290°C, 300°C;

[0035] 2) The extruder 3 transports the molten material to the metering pump 51 in the spinning box 5 through the melt distribution pipe 4, and the metering pump 51 accurately injects the material into the spinning assembly 52 in the spinning box 5, and the material is sprayed The wire plate 521 forms a thin stream of melt; wherein, the shape of the orifice in the spinneret is a six-lobed shape;

[0036] 3) The melt stream passes through the thermostat 6 (the temperature is controlled at 1...

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Abstract

The invention discloses a production process of polyamide 6 special-shaped air-textured yarns with high strength and low boiling shrinkage. The process comprises the following steps of: 1) adding polyamide 6 slices into an extruder through a slice hopper; 2) delivering the molten material to a metering pump in a spinning beam through a melt distribution duct in the extruder, accurately injecting the material into a spinning assembly in the spinning beam through the metering pump, and making the material form melt streamlet through a spinning plate; 3) making the melt streamlet pass through a temperature controller, gradually solidifying the melt streamlet into threads under the condition of lateral blowing cooling, oiling, stretching the threads by a GR1 thermal roller and a GR2 thermal roller, and forming drawn yarns through a winding device; and 4) feeding the drawn yarns into a first roller through a yarn breaker, making the drawn yarns pass through a second roller, an air nozzle and a stable thermal box, sizing the yarns in a sizing box, detecting the yarns by a yarn detector, oiling the yarns by an oil nozzle, and finally winding the yarns into the air-textured yarns through the winding device. The air-textured yarns produced by the process have the characteristics of high strength and low boiling water shrinkage.

Description

technical field [0001] The invention relates to a production process of high-strength and low-boiling shrinkage nylon 6 special-shaped space-changing yarn. Background technique [0002] ATY was invented by DuPont in the 1950s. Its principle is: the filament enters the nozzle at a lower overfeed rate, and the airflow blows along the direction in which the filament is running, so that the filament is dispersed and ejected, so that Excess lengths of filaments can be made to form kinks or loops, which are organically combined with the main body of the yarn, resulting in a fluffy tow. [0003] However, the performance of the air variable yarn produced by the existing air variable yarn production process is not ideal, especially the low strength and poor boiling shrinkage performance. Contents of the invention [0004] The purpose of the present invention is to provide a production technology of high-strength and low-boiling shrinkage nylon 6 special-shaped air-variable yarn. ...

Claims

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Application Information

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IPC IPC(8): D02G1/16D01D5/24D01D5/253D01D5/08D01D10/02
Inventor 梁伟东毛新华宋明陈欣刘将培李细林汤友好黄健华
Owner GUANGDONG XINHUI MEIDA NYLON
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