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One-step preparation method and device of fully drawn yarn (FDY) or FDY differential shrinkage combined filament yarn

A technology of different shrinkage mixed fiber yarn and preparation device, which is applied in the field of synthetic fiber manufacturing, can solve the problems of increasing the different shrinkage mixed fiber yarn, POY/FDY different shrinkage mixed fiber yarn with low strength, single variety, etc., and achieves flexible spinning. , Good stability of product quality, various effects of raw materials

Inactive Publication Date: 2013-05-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a one-step preparation method of FDY / FDY different shrinkage mixed fiber yarn and its device to solve the problems of low strength and single variety of POY / FDY different shrinkage mixed fiber yarn, so as to increase the Varieties of different shrinkage mixed fiber yarns, expanding the application range of different shrinkage mixed fiber yarns, and increasing product value

Method used

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  • One-step preparation method and device of fully drawn yarn (FDY) or FDY differential shrinkage combined filament yarn
  • One-step preparation method and device of fully drawn yarn (FDY) or FDY differential shrinkage combined filament yarn

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, it is a schematic structural diagram of a preparation device for compounding FDY / FDY different shrinkage mixed filaments after setting, including a first spinning unit 1 and a second spinning unit 4 . The yarn output from the first spinning assembly 1 is drawn by the first hot roller 2, shaped by the second hot roller 2' and diverted by the diverter 3 in sequence to form the first fully drawn yarn, and the first fully drawn yarn FDY is input into the parallel yarn 6, the filaments output by the second spinning assembly 4 are sequentially drawn by the third hot roller 5 and shaped by the fourth thermal roller 5' to form the second fully drawn filament, and the second fully drawn filament is input into the doubling device 6 , after the parallel device 6 combines all the input yarns, they pass through the network device 7 and the winding roller 8 in turn to obtain FDY / FDY different shrinkage mixed fiber yarns.

Embodiment 2

[0035] Such as figure 2 As shown, it is a schematic structural diagram of a preparation device for compounding FDY / FDY different shrinkage mixed filaments before setting, including a first spinning unit 1 and a second spinning unit 4 . The first spinning output from the first spinning assembly 1 is drawn by the first hot roller 2 in turn, and then input to the second heating roller 2' for shaping to form the first fully drawn yarn, and the second spinning output from the second spinning assembly 4 After being drafted by the third hot roller 5, it is input into the second hot roller 2' for shaping to form the second fully-drawn yarn. After the second hot roller 2' combines the first fully-drawn yarn and the second fully-drawn yarn, Through the network device 7 and the winding roller 8, the FDY / FDY different shrinkage mixed fiber yarn is obtained.

Embodiment 3

[0037] Raw materials: polyethylene terephthalate chips (intrinsic viscosity 0.72dL / g, melting point 260-268°C), purchased from Shanghai Petrochemical Co., Ltd.;

[0038] Equipment: adopt the preparation device provided in Example 1;

[0039] Preparation method: After the polyethylene terephthalate spinning solution is sprayed out from the first spinning assembly 1, it passes through the first hot roller 2 with a temperature of 70°C and a speed of 1000m / min, and a temperature of 90°C and a speed of 1000m / min. A second hot roll 2' at 2800 m / min and a diverter 3 to form a first fully drawn yarn (FDY). After the polyethylene terephthalate spinning solution is sprayed out by the second spinning assembly 4, it passes through the third hot roller 5 with a temperature of 90°C and a speed of 1000m / min, and a temperature of 130°C and a speed of 4500m / min. The fourth hot roller 5' of min forms the second fully drawn yarn (FDY). The first fully drawn yarn and the second fully drawn yarn...

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Abstract

The invention discloses a one-step preparation method and a one-step preparation device of full drawn yarn (FDY) or FDY differential shrinkage combined filament yarn. The preparation method includes the steps of combining yarn spun by a first spinning assembly and a second spinning assembly after the yarn spun by the first spinning assembly and the second spinning assembly are respectively drafted and finalize the design, obtaining the combined filament yarn through a wire stitching machine and a winding roller, or combining the yarn spun by the first spinning assembly and the second spinning assembly and finalizing the design in a second hot roller after the yarn spun by the first spinning assembly and the second spinning assembly is drafted and obtaining the combined filament yarn through the wire stitching machine and the winding roller. Combined filament yarn raw materials obtained through the preparation method is flexible and diverse in combination, strong in intensity, and capable of improving and increasing varieties and improving product value.

Description

technical field [0001] The invention relates to a one-step preparation method of FDY / FDY different shrinkage mixed fiber yarn and a device thereof, belonging to the technical field of synthetic fiber manufacturing. Background technique [0002] In recent years, the one-step differential shrinkage mixed fiber yarn has achieved rapid development in my country and is one of the most important differentiated fibers. In 2012, the annual output of one-step different shrinkage mixed fiber yarn has reached 300,000 tons, and it is expected to reach more than 1 million tons in 2015. The production technology of two-step method is gradually being eliminated, and one-step method has become the mainstream production technology. [0003] However, the one-step different shrinkage mixed fiber yarn currently on the market is basically pre-oriented yarn (POY) / fully drawn yarn (FDY) mixed fiber, and the method used is: the yarn spun by the first spinning assembly After passing through the low...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D02G3/38D02J1/08D02J1/22
Inventor 王学利樊娟俞建勇黄莉茜
Owner DONGHUA UNIV
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