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Polyamide 6 POY/FDY composite fibre and preparation method for same

A composite fiber and polyamide technology, applied in fiber processing, melt spinning, filament/thread forming, etc., can solve the problems of unstable product quality, low efficiency, high production cost, etc., and achieve good dyeing uniformity and energy The effect of low consumption and short production process

Inactive Publication Date: 2014-08-13
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem to be solved by the present invention is aimed at the existing polyamide 6POY / FDY two-step method or one-step composite fiber preparation technology, which has high production cost, low efficiency and unstable product quality. By adopting ultra-high-speed spinning technology, Provide a polyamide 6POY / FDY composite fiber and its preparation method

Method used

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  • Polyamide 6 POY/FDY composite fibre and preparation method for same
  • Polyamide 6 POY/FDY composite fibre and preparation method for same
  • Polyamide 6 POY/FDY composite fibre and preparation method for same

Examples

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Effect test

Embodiment 1

[0020] This example provides a 110dtex / 96f (including: 43dtex / 48f fully drawn yarn, 67dtex / 48f pre-oriented yarn) ultra-high-speed method for preparing polyamide 6POY / FDY composite fiber. For the process flow, see the attached figure 1 . The production process is as follows:

[0021] The polyamide 6 dry chips that meet the requirements of the spinning process are input into the screw, heated, melted and filtered, and then enter the spinning box. The spinning melt is extruded from the micropores of two metering pumps, spinning components and two spinnerets, Quenching and blowing to cool and solidify to form two bundles of filaments, one of which is oiled through nozzles, pre-networked, oiled through secondary nozzles, wire pressing rods, yarn guides, first drafting roller group and second drafting hot roller group Stretching and heat setting are carried out between them to obtain polyamide 6 fully drawn yarn (FDY); another bundle of yarn is oiled through the nozzle, the first ...

Embodiment 2

[0026] This example provides a 136dtex / 108f (among them: 43dtex / 36f fully drawn yarn, 93dtex / 72f pre-oriented yarn) ultra-high-speed method for preparing polyamide 6POY / FDY composite fiber. For the process flow, see the attached figure 1 . The production process is as follows:

[0027] The polyamide 6 dry chips that meet the requirements of the spinning process are input into the screw, heated, melted and filtered, and then enter the spinning box. The spinning melt is extruded from the micropores of two metering pumps, spinning components and two spinnerets, Quenching and blowing to cool and solidify to form two bundles of filaments, one of which is oiled through nozzles, pre-networked, oiled through secondary nozzles, wire pressing rods, yarn guides, first drafting roller group and second drafting hot roller group Stretching and heat setting are carried out between them to obtain polyamide 6 fully drawn yarn (FDY); another bundle of yarn is oiled through the nozzle, the firs...

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Abstract

The invention relates to a polyamide 6 POY / FDY composite fibre and a preparation method for the same. According to the preparation method, polyamide 6 dry slices are input in a screw rod, heated, melted and filtered, and then enter a spinning manifold, a spinning melt is extruded from two metering pumps, a spinning assembly and the micropores of two spinneret plate, cooled by the blowing of a quenching ring and cured to form two bundles of yarns, and one bundle of the yarns is subjected to nozzle oiling, pre-networking, secondary nozzle oiling, and stretching and heat-setting between a first stretching roll group and a second stretching roll group to obtain polyamide 6 FDY; the other bundle of the yarns is subjected to nozzle oiling, a first yarn guide disc and a second yarn guide disc to obtain polyamide 6 POY; the polyamide 6 FDY and the polyamide 6 POY are input in a central networking device and a third yarn guide disc simultaneously, and subjected to compounding through nozzles and ultra-high-speed winding forming to prepare the polyamide 6 POY / FDY composite fibre. According to the polyamide 6 POY / FDY composite fibre and the preparation method disclosed by the invention, a pneumatic spinning quenching technology is used, thus increasing the spinning speed; the features of fast production speed, high yield, low cost, energy conservation and emission reduction, good product quality and the like are achieved.

Description

technical field [0001] The invention relates to an ultra-high-speed polyamide 6POY / FDY composite fiber and a preparation method thereof, belonging to the field of textile materials. Background technique [0002] Polyamide 6POY / FDY composite fiber and its products are mainly composed of two kinds of polyamide 6POY and FDY fibers with different specifications, different shapes and properties. The one-step process technology route is prepared, that is, the pre-oriented yarn (POY) and the fully drawn yarn (FDY) are prepared respectively through the high-speed spinning POY and spinning and drawing one-step processing procedures, and then POY and FDY are combined and networked Composite fibers are processed and produced. This preparation method has many shortcomings such as long process flow, complicated processing procedures, low processing speed, high production cost, and low efficiency. But the product uniformity that it is made is poor and dyeing uneven, and product quality i...

Claims

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Application Information

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IPC IPC(8): D01D5/08D01D5/28D01D5/088
Inventor 管新海王丽萍左保齐陈明学费万春
Owner SUZHOU UNIV
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