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40-denier nylon 66 full dull full drawn fiber production process

A technology of full extinction and full drafting, which is used in the preparation of nylon fibers and the spinning production process of nylon 66 full extinction and full drafting fibers. and other problems, to achieve the effect of easy control, mature process and high degree of automation

Active Publication Date: 2011-04-06
BEIJING SANLIAN HOPE TEXTILE & CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, domestic nylon 66 products have complex operation methods in the preparation process, are not easy to control, and the quality of the obtained products cannot meet the requirements of users.

Method used

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  • 40-denier nylon 66 full dull full drawn fiber production process
  • 40-denier nylon 66 full dull full drawn fiber production process
  • 40-denier nylon 66 full dull full drawn fiber production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1, preparation technology

[0029] The 40-denier nylon 66 full-dull full-drawing fiber spinning process is further explained in conjunction with the process flow chart.

[0030] Spinning equipment and supporting devices, including chip conveying and drying device 1, screw extruder 2, measuring head 3, melt distribution pipe 4, spinning box 5, spinning metering pump 6, spinning assembly 7, side blower Device 8, oiling device 9, winding machine 10 and biphenyl steam generator 11.

[0031] Process flow:

[0032] 1) 960 g of nylon 66 full-dull slices dried in drying tower 1 enter the screw extruder 2 at a speed of 40 rpm, extruded and melted to become spinnable nylon 66 melt, and then extruded by the screw In machine 2, there are six temperature control zones, the heating temperature of the first zone is 290°C, the heating temperature of the second zone is 295°C, the heating temperature of the third zone is 290°C, the heating temperature of the fourth zone is 2...

Embodiment 2

[0039] Embodiment 2, preparation technology of the present invention

[0040] 1) 960 g of dry nylon 66 full-dull slices are heated, extruded, and melted into a melt in a screw extruder with a rotation speed of 40 rpm and a heating temperature of 290-300 ° C. The screw extruder is divided into six Temperature control zone, the heating temperature of the first zone is 293°C, the heating temperature of the second zone is 300°C, the heating temperature of the third zone is 293°C, the heating temperature of the fourth zone is 290°C, the heating temperature of the fifth zone is 290°C, the heating temperature of the sixth zone is 290°C, extruded by the screw The temperature of the nylon 66 melt from the machine is 290°C,

[0041] 2) Nylon 66 melt is insulated by a gas-phase heat medium in the melt pipeline, delivered to the spinning box by an equal-length pipeline outside the box and metered by a spinning metering pump. Count 11 revolutions per minute, and then distribute the nylon ...

Embodiment 3

[0045] Embodiment 3, preparation technology of the present invention

[0046]1) Dried nylon 66 slices 960g are heated, extruded, and melted into a melt in a screw extruder with a rotation speed of 40 rpm and a heating temperature of 285-290°C, wherein the screw extruder is divided into six temperature-controlled The heating temperature of the first zone is 286°C, the heating temperature of the second zone is 290°C, the heating temperature of the third zone is 286°C, the heating temperature of the fourth zone is 285°C, the heating temperature of the fifth zone is 285°C, the heating temperature of the sixth zone is 285°C, and it comes out of the screw extruder The melt temperature of nylon 66 is 285°C,

[0047] 2) Nylon 66 melt is insulated by a gas-phase heat medium in the melt pipeline, delivered to the spinning box by an equal-length pipeline outside the box and metered by a spinning metering pump. Count 11 revolutions per minute, and then distribute the nylon 66 melt evenly...

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Abstract

The invention belongs to the chemical industry field, relating to a 40-denier nylon 66 full dull full drawn fiber production process. The production process comprises the following steps: 1) heating, extruding and melting a dried nylon 66 full dull slice into a molten material; 2) insulating the nylon 66 molten material, feeding the molten material in a spinning box via external box pipelines with equal length, and evenly distributing the nylon 66 molten material in spinning components via internal box pipelines with equal length; 3) feeding the nylon 66 molten materal in the spinning components in a sand cup, and adding metal sand in the sand cup; 4) performing high pressure ejection on the molten material from a spinneret plate at the bottom of the spinning components to from fibers, and cooling and forming the fibers under the conditions of constant temperature, constant humidity and cross air blasting; and 5) bundling and oiling the cooled and formed bundles, passing through a spinning channel, a pre-meshing device, a drawing roll and a tension roll, and winding into spinning cakes on a winder.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a preparation method of nylon fiber, in particular to a spinning production process of nylon 66 full-dull full-drawn fiber. Background technique [0002] The scientific name of nylon (Nylon) fiber is polyamide (polyamide) fiber, which was originally the trade name of polyhexamethylene adipamide produced by DuPont, which is generally known as Nylon 66 (Nylon 66). Nylon fiber is the second largest variety of synthetic fiber in the world, and the third largest variety of synthetic fiber in my country. With the improvement of people's living standards, people's demand for textile raw materials is becoming more and more differentiated, high-end, and personalized. [0003] At present, domestic nylon 66 products have complex operation methods in the preparation process, are not easy to control, and the quality of the obtained products cannot meet the requirements of users. After a long pe...

Claims

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Application Information

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IPC IPC(8): D01D5/08D01D5/088D01D5/096D01D5/16D01D1/06D01D13/00D01F6/60
Inventor 于佩霖周顺义
Owner BEIJING SANLIAN HOPE TEXTILE & CHEM TECH
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