Production method of PET industrial yarns

A technology of polyester industrial yarn and production method, which is applied in the directions of melt spinning, filament forming treatment, feeding solution to spinneret, etc. Achieve low constant load elongation, high breaking strength, low dry heat shrinkage effect

Inactive Publication Date: 2017-11-10
桐乡守敬应用技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its low heat shrinkage, polyester industrial yarn is widely used in the field of narrow-width fabrics such as filter cloth, sunshade cloth, tarpaulin, etc. The dry heat shrinkage of traditional low-shrinkage polyester industrial yarn is about 2 %(177℃, 1min, 0.05g / D), the polyester industrial yarn with this level of dry heat shrinkage will have a large shrinkage rate and uneven shrinkage after being woven into cloth and heat-treated by coating, which will easily cause uneven cloth surface. Flat, so it can only be used for the weaving of narrow fabrics
In recent years, due to the rapid development of membrane structural materials in construction, higher requirements have been put forward for the width of fabrics. Ordinary low-shrinkage polyester industrial yarns cannot meet the requirements of wide fabrics with a width of more than 5 meters. Therefore, a shrinkage fabric has been developed. Polyester industrial yarn with lower efficiency can be used to produce wide-width fabrics to meet the needs of membrane structural materials, which is extremely urgent

Method used

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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Embodiment Construction

[0015] The present invention will be further described below in conjunction with specific examples.

[0016] A method for producing polyester industrial yarn, the process steps are as follows:

[0017] (1) Preparation of slices: high-viscosity slices are subjected to low-temperature steady-state solid-state polymerization to obtain high-viscosity slices with a viscosity of 2.00dl / g;

[0018] (2) Spinning: The high-viscosity slices prepared in step (1) are melted and extruded into the first screw extruder from the slice silo under the protection of nitrogen to form a high-viscosity melt, and the modified masterbatch is passed through the masterbatch The warehouse enters the second screw extruder to melt and extrude the masterbatch melt, and then the sliced ​​high-viscosity melt is mixed with the masterbatch melt in the static mixer after passing through the filter, and the mixed melt enters through the melt pipeline The spinning box is distributed to each melt branch pipe, and...

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PUM

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Abstract

The invention discloses a production method of PET industrial yarns. The method comprises the technological steps of (1) preparation of high-viscosity slices, (2) spinning, (3) drafting and (4) winding, wherein at the step (3), drafting, thermal shaping and loosening are conducted by six pairs of drafting rollers under a certain spinning speed. The invention aims to provide the production method of the PET industrial yarns. The method is used to prepare the PET industrial yarns with good shrinkage characters. The method is applicable to production of wide fabrics; and demands for film structure materials can be satisfied.

Description

technical field [0001] The invention relates to the field of textile technology, in particular to a production method of polyester industrial yarn. Background technique [0002] Since the advent of polyester in the 1950s, great progress has been made in the development of industrial applications. Due to its low heat shrinkage, polyester industrial yarn is widely used in the field of narrow-width fabrics such as filter cloth, sunshade cloth, tarpaulin, etc. The dry heat shrinkage of traditional low-shrinkage polyester industrial yarn is about 2 %(177℃, 1min, 0.05g / D), the polyester industrial yarn with this level of dry heat shrinkage will have a large shrinkage rate and uneven shrinkage after being woven into cloth and heat-treated by coating, which may easily cause uneven cloth surface. Flat, so it can only be used for the weaving of narrow fabrics. In recent years, due to the rapid development of membrane structural materials in construction, higher requirements have bee...

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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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D5/092D01D1/06D01F6/62D01F6/84
CPCD01D5/08D01D1/065D01D5/092D01F6/62D01F6/84D10B2331/04
Inventor 邱洪波邓小燕
Owner 桐乡守敬应用技术研究院有限公司
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