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Full-dull polyamide 6 fibre and method for producing the same

A production method and technology of optical polyamide, which are applied in the directions of single-component polyamide rayon, fiber treatment, fiber chemical characteristics, etc., can solve the problem of poor dyeing uniformity, large fluctuation of oiling rate, and easy degradation of polymer melt. and other problems to achieve the effect of improving dyeing uniformity, avoiding yellowing, avoiding excessive degradation and gelation

Active Publication Date: 2009-06-24
YIWU HUADING NYLON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly aims at the defects such as easy degradation of high polymer melt, poor evenness of evenness, large fluctuation of oiling rate, easy occurrence of hairiness, poor dyeing uniformity and other defects in the production of full-dull polyamide 6 fiber, and invents a polymer degradation Full-dull polyamide 6 fiber with less, evenness, less hairiness, and uniform dyeing and its production method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In the present invention, a polyamide 6 particle with a TiO2 content of 1.6-2.5wt% is selected, extruded and melted, then sent to the spinning box, and accurately metered and extruded by a heat-preserving metering pump, and distributed to each spinning assembly. After extrusion, it is cooled by side blowing and formed, oiled through the oil nozzle and the oil tanker, pre-networked, drawn between the first drafting roll and the second drafting roll, and drawn between the second drafting roll and the third godet roll Blowing network between, and finally wind full matted polyamide 6 fiber. The production process is: slicing→stainless steel silo→nitrogen protection with a purity of 99.99%→screw extruder (extrusion melting)→melt pipeline→metering pump metering extrusion→components→side blowing (cooling)→oil nozzle and oil tanker double channel Oil, bundling→pre-network→first drafting roller→second drafting roller (drawing and setting)→main network→third godet roller→winding→...

Embodiment 2

[0041] Step is with reference to embodiment 1, but has following difference:

[0042] Selection and Storage of Polyamide 6: Choosing a TiO 2 The polyamide 6 particles with a content of 1.6wt% and a moisture content of 400ppm are added in the stainless steel silo, and the TiO 2 Coating TiO with anatase grade manganese ions2 , The silo is filled with nitrogen with a purity of 99.99% for protection.

[0043] When spinning, the above-mentioned spinning melt is extruded and metered into the spinning box, and transported to the metering pump through the melt pipeline. After metering, it is pressed into the assembly, mixed, filtered, and the metal containing chromium and nickel is selected. Sand is used as a filter material, and the content of chromium and nickel in the metal sand is 45wt%.

[0044] Cooling and forming: the above-mentioned melt stream is cooled by side blowing with a wind temperature of 18° C., a humidity of 95%, a wind pressure of 800 Pa, and a wind speed of 0.55 ...

Embodiment 3

[0048] Step is with reference to embodiment 1, but has following difference:

[0049] Selection and Storage of Polyamide 6: Choosing a TiO2 2 The polyamide 6 particles with a content of 2wt% and a moisture content of 300ppm are added in the stainless steel silo, and the TiO 2 Coating TiO with anatase grade manganese ions 2 , The silo is filled with nitrogen with a purity of 99.99% for protection.

[0050] The above-mentioned spinning melt is extruded and metered into the spinning box, and is transported to the metering pump through the melt pipeline. After metering, it is pressed into the assembly, mixed, filtered, and metal sand containing chromium and nickel is selected as the filter material. , the content of chromium and nickel in metal sand is 50wt%,

[0051] Cooling and forming: the above-mentioned melt stream is cooled by side blowing with a wind temperature of 17° C., a humidity of 90%, a wind pressure of 750 Pa, and a wind speed of 0.5 m / s to form a tow. Two honey...

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Abstract

The invention relates to a chemical fiber and a manufacturing method thereof, in particular to a full-dull daiamid 6 fiber added with titanium dioxide and a manufacturing method thereof. The full-dull daiamid 6 fiber and the manufacturing method thereof which have less polymer degradation, even yarn levelness, less filoplume and uniform dyeing aim at solving the disadvantages of easy degradation of high polymer fusant, poor evenness of the yarn levelness, high fluctuation of oiling rate, easy occurrence of more filoplume, bad uniformity of dyeing, etc. The invention mainly has the technical proposal that daiamid 6 particle with more than or equal to 1.6% of TiO2 is taken as raw material, treated by melt spinning and cross air blasting through twice of rectification and oiling, and is wound; finally, the full-dull daiamid 6 fiber is obtained.

Description

technical field [0001] The invention relates to a chemical fiber and a manufacturing method thereof, in particular to a full-dull polyamide 6 fiber added with titanium dioxide and a manufacturing method thereof. Background technique [0002] Full-dull polyamide 6 fiber is based on ordinary polyamide 6 fiber and added 1.6-1.8% high content of titanium dioxide through physical modification. The high content of titanium dioxide not only makes polyamide 6 fiber have soft luster, good deep dyeing, The fabric has good wearing performance such as high drape, and it has the characteristics of anti-see-through, strong shielding performance, high reflectivity and absorption rate to ultraviolet light, etc. It is widely used in the production of high-end underwear, knitted clothing, swimwear, fitness wear and casual clothing series of products. At the same time, due to the substantial increase in the content of titanium dioxide in the inorganic particles in the polymer, the plasticizin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/10D01D5/088D01D5/096D06C7/02
Inventor 宁佐龙
Owner YIWU HUADING NYLON
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