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Polyamide 6 POY/FDY composite fibre and preparation method adopting spinning-interlacing one-step process

A composite fiber and polyamide technology, applied in the field of chemical fiber, to achieve the effect of large production capacity, reduced investment cost and good melt uniformity

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 to provide a composite fiber with high production and processing speed, low production cost, good product quality and obvious cost-effective advantages in view of the shortcomings of existing polyamide 6POY / FDY two-step or one-step composite fiber product quality. Spinning and interlacing one-step polyamide 6POY / FDY composite fiber and its preparation method

Method used

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  • Polyamide 6 POY/FDY composite fibre and preparation method adopting spinning-interlacing one-step process
  • Polyamide 6 POY/FDY composite fibre and preparation method adopting spinning-interlacing one-step process
  • Polyamide 6 POY/FDY composite fibre and preparation method adopting spinning-interlacing one-step process

Examples

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Effect test

Embodiment 1

[0020] This example provides a method for preparing polyamide 6POY / FDY composite fiber by one-step spinning and interlacing of 110dtex / 96f (among them: 43dtex / 48f fully drawn yarn, 67dtex / 48f pre-oriented yarn). 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, The slow cooling device and the surrounding air blowing cooling device are cooled and solidified to form two bundles of filaments, one of which is oiled through the nozzle, pre-networked, stretched and heat-set between the first drafting roller group and the second drafting hot roller group , and then pass through the third guide wire disc to obtain polyamide 6 fully drawn yarn (FDY); another bundle of yarn is oiled through the nozzle and...

Embodiment 2

[0027] This example provides a method for preparing polyamide 6POY / FDY composite fiber by one-step spinning and interlacing of 136dtex / 96f (including: 43dtex / 24f fully drawn yarn, 93dtex / 72f pre-oriented yarn). For the process flow, see the attached figure 1 . The production process is as follows:

[0028] 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, The slow cooling device and the surrounding air blowing cooling device are cooled and solidified to form two bundles of filaments, one of which is oiled through the nozzle, pre-networked, stretched and heat-set between the first drafting roller group and the second drafting hot roller group , and then pass through the third godet to obtain polyamide 6 fully drawn yarn (FDY); another bundle of yarn is ...

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Abstract

The invention relates to a polyamide 6 POY / FDY composite fibre and a preparation method adopting a spinning-interlacing one-step process. 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 an annealing annular device and an annular blowing cooling device, and cured to form two bundles of yarns, and one bundle of the yarns is subjected to nozzle oiling, pre-networking, stretching and heat-setting between a first stretching roll group and a second stretching roll group, and a third yarn guide disc to obtain FDY; the other bundle of the yarns is subjected to nozzle oiling, and a yarn guide winding system device which is arranged in parallel to obtain POY; the FDY and the POY are input in a yarn combiner and interlacing nozzles simultaneously, and subjected to compounding and winding forming to prepare the polyamide 6 POY / FDY composite fibre. The polyamide 6 POY / FDY composite fibre and the preparation method have the features of fast processing speed, high yield, low production cost, and energy conservation and emission reduction; the provided product is good in interlacing degree uniformity and stability, and good in dyeing effect.

Description

technical field [0001] The invention relates to a polyamide 6POY / FDY composite fiber and a method for preparing the composite fiber by one-step spinning and interlacing, belonging to the technical field of chemical fibers. 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. In recent years, there have been related reports on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D13/00D01D5/08D02J1/08D01F8/12
Inventor 管新海汤杭波张欢嘉李海涛戴虹
Owner SUZHOU UNIV
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