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Preparation method of POY/FDY polyester-polyester composite yarn

A composite yarn and polyester technology, applied in the field of polyester fiber, can solve the problems of low weaving processing efficiency, low shrinkage in boiling water, and difficulty in controlling the fiber aggregate structure

Pending Publication Date: 2022-03-25
JIANGSU HENGLI CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the development process of one-step spinning technology, there are still technical bottlenecks such as synchronous spinning and low shrinkage in boiling water, which lead to difficulties in controlling the structure of fiber aggregation, unstable shrinkage index, and low weaving processing efficiency.

Method used

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  • Preparation method of POY/FDY polyester-polyester composite yarn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 As shown, a preparation method of POY / FDY polyester composite yarn, the polyester POY yarn with a monofilament fineness of 1dtex is sequentially cooled, oiled, guided and pre-networked, and the polyester FDY yarn with a monofilament fineness of 1dtex is sequentially processed. After the processes of cooling, oiling, pre-internetting and the first hot roller GR1 7, the polyester POY yarn and the polyester FDY yarn are plied in the godet SR1 6 to form a composite tow, and the composite tow is wound on the composite tow by using the ply network device 9. network, and successively pass through the process of the second hot roller GR2 8 and the main network (the main network device used in the main network process is 10 in the figure), and then enter the winding device 11 for winding molding to obtain POY / FDY polyester Polyester composite yarn; wherein, the output of polyester POY yarn and polyester FDY yarn is independently controlled by their respective me...

Embodiment 2

[0041] A preparation method of POY / FDY polyester composite yarn, the polyester POY yarn with a monofilament fineness of 1.2dtex goes through the processes of cooling, oiling, guide wire and pre-network successively, and the polyester FDY yarn with a monofilament fineness of 1.2dtex goes through successively After the processes of cooling, oiling, pre-internetting and the first hot roller GR1, polyester POY yarns and polyester FDY yarns are plied in the godet SR1 to form composite tows, and the composite tows are networked on the composite tows with a ply networker, and sequentially After the process of the second hot roller GR2 and the main network, it enters the winding device for winding and forming to obtain POY / FDY polyester composite filaments; wherein, the output of polyester POY filaments and polyester FDY filaments is determined by their respective melts The metering pump is controlled separately; the godet roller used in the guide wire process is set below the oiling p...

Embodiment 3

[0045] A preparation method of POY / FDY polyester composite yarn, the polyester POY yarn with a monofilament fineness of 1.2dtex goes through the processes of cooling, oiling, guide wire and pre-network successively, and the polyester FDY yarn with a monofilament fineness of 1.2dtex goes through successively After the processes of cooling, oiling, pre-internetting and the first hot roller GR1, polyester POY yarns and polyester FDY yarns are plied in the godet SR1 to form composite tows, and the composite tows are networked on the composite tows with a ply networker, and sequentially After the process of the second hot roller GR2 and the main network, it enters the winding device for winding and forming to obtain POY / FDY polyester composite filaments; wherein, the output of polyester POY filaments and polyester FDY filaments is determined by their respective melts The metering pump is controlled separately; the godet roller used in the guide wire process is set below the oiling p...

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Abstract

The invention relates to a preparation method of POY (polyester pre-oriented yarn) / FDY (fully drawn yarn) polyester-polyester composite yarns. The POY / FDY polyester-polyester composite yarns are prepared by compounding polyester POY yarns and polyester FDY yarns and then winding and forming; the polyester POY and the polyester FDY are sequentially subjected to the procedures of cooling, oiling, yarn guiding and pre-interlacing before being stranded; a silk guide roller used in the silk guide process is arranged below the oiling position, the height difference between the silk guide roller and the oiling position is 20-30 mm, a spinneret plate is located above the oiling position, the height difference between the spinneret plate and the oiling position is 90-110 mm, a pre-interlacing device used in the pre-interlacing process is located below the silk guide roller, and the height difference between the pre-interlacing device and the silk guide roller is 3500-3600 mm. The godet is additionally arranged behind the oiling position, the POY spinning tension is effectively regulated and controlled, the boiling water shrinkage of the POY / FDY polyester-polyester composite yarn is 45.0 + / -5.0%, and the POY / FDY polyester-polyester composite yarn can be widely applied to wool-like, silk-like and high-grade knitted fabrics.

Description

technical field [0001] The invention belongs to the technical field of polyester fibers, and relates to a preparation method of POY / FDY polyester composite yarn. Background technique [0002] Polyester fiber is currently the largest and most widely used synthetic fiber variety in the world. It is widely used in textiles such as clothing, bedding, various decorative fabrics, special fabrics for national defense and military industries, and other industrial fiber products. The production capacity of polyester series products in my country is growing at an alarming rate, and the rapid growth of polyester fiber production capacity has made China gradually develop into an important processing base for polyester products in the world. In recent years, with the development of international textile fabrics in the direction of thin, high-density, environmentally friendly functionality, and low-fiber composites, the upgrading of fiber raw materials has been continuously promoted, and ...

Claims

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Application Information

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IPC IPC(8): D02G3/04D02G3/44D02G1/18D01D11/04
CPCD02G3/045D02G3/44D02G1/18D01D11/04
Inventor 王雪王丽丽王相明汤方明孙晓华宋戈杨超明陈锋寇婉婷沈丽
Owner JIANGSU HENGLI CHEM FIBER
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