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Intermediate-strength coarse-denier dacron FDY (Fully drawn yarn) and method for producing same

A technology of polyester and coarse denier, which is applied in stretch spinning, filament/thread forming, textiles and papermaking, etc. It can solve problems such as quality limitations, achieve the effects of improving toughness, improving drafting and setting, and reducing production and processing costs

Inactive Publication Date: 2012-05-09
JIANGSU HUAYA FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the varieties of coarse denier yarns produced in China are mainly 200D~300D, the breaking strength of the fibers is about 3.6CN / dtex, and the elongation at break is 28% (that is, the toughness is average). The winding equipment used is basically two rolls or three rolls. Roll drafting and shaping, the quality is limited to a certain extent

Method used

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  • Intermediate-strength coarse-denier dacron FDY (Fully drawn yarn) and method for producing same
  • Intermediate-strength coarse-denier dacron FDY (Fully drawn yarn) and method for producing same
  • Intermediate-strength coarse-denier dacron FDY (Fully drawn yarn) and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Production of medium-strength coarse denier polyester FDY yarn with a specification of 500D.

[0033] This product adopts the one-step production route of melt direct spinning. The PET obtained by the polymerization of PTA and EG is pressurized and transported by a gear pump after passing through a melt filter, cooled by a cooler, and then distributed to each spinning position. The pump sends the melt quantitatively to each spinning assembly. After the melt is filtered evenly and pressurized by the filter layer in the spinning assembly, it is spun in a fine flow through the elliptical spinneret (the spinneret is in the spinning assembly). After the thin stream of melt is cooled by side air at constant temperature and humidity, it solidifies into silk strands, and then oiled by oil tanker, drafted and shaped, added to the main network, and wound into FDY silk cake. After that, the packaging is put into storage.

[0034] The specific production steps are: PTA+E...

Embodiment 2

[0052] Example 2 A medium-strength coarse denier polyester FDY yarn with a specification of 400D was produced. The production method is the same as in Example 1. Among them, the speed of the first pair of heat rollers is 1200m / min and the temperature is 115°C; the speed of the second pair of heat rollers is 4300m / min and the temperature is 146°C. The long axis of the oval spinneret used is 115mm; the short axis is 75mm, and the diameter of the circular micro-hole is 0.3mm.

[0053] The above products were sent to customers for warp knitting machine samples, and there was no obvious end breakage during the weaving process. The dyeing and finishing processes of the produced fabrics are all normal.

[0054] The specific process parameters are shown in Table 2.

[0055] Table 2: Table of specific process parameters for spinning in this embodiment (444 / 96)

[0056]

[0057]

[0058] According to this process, the medium-strength coarse denier polyester FDY yarn with the s...

Embodiment 3

[0069] Example 3 A medium-strength coarse denier polyester FDY yarn with a specification of 600D was produced. The production method is the same as in Example 1. Among them, the speed of the first pair of heat rollers is 1030m / min and the temperature is 122°C; the speed of the second pair of heat rollers is 4200m / min and the temperature is 152°C. The long axis of the oval spinneret used is 140mm; the short axis is 90mm.

[0070] The above products were sent to customers for warp knitting machine samples, and there was no obvious end breakage during the weaving process. The dyeing and finishing processes of the produced fabrics are all normal.

[0071] The specific process parameters are shown in Table 3.

[0072] Table 3: Table of specific process parameters of spinning in this embodiment (666 / 96)

[0073]

[0074]

[0075] According to this process, the medium-strength coarse denier polyester FDY yarn with the specification of 600D is produced. The production runs ...

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Abstract

The invention discloses an intermediate-strength coarse-denier dacron FDY (Fully drawn yarn) and a method for producing the same. The method for preparing the dacron FDY includes the steps of enabling a PET (polyethylene terephthalate) melt to be extruded from spinneret orifices of an elliptical spinneret plate for spinning according to a direct spinning FDY process route prior to being cooled through cross air blowing and being solidified to a sliver sequentially, then being oiled by an oil wheel prior to being rolled by two pairs of heat rollers, and finally being placed in a major net to be wound into a FDY spinning cake. The acquired dacron FDY is of a coarse-denier yarn variety with the fineness degree ranging from 400D to 600D. The method breaks the convention that coarse-denier yarns with the fineness degree higher than 300D are produced by means of double-strand combination, so that production capacity of the coarse-denier yarns with one machine is improved, and production and processing cost is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of textiles, and in particular relates to a medium-strength coarse denier polyester FDY yarn and a production method thereof. Background technique [0002] Coarse denier polyester filament can be used to produce various silk-like and wool-like clothing fabrics, weaving sofa fabrics, curtains, blankets, carpets, and can be used to produce industrial filter cloths, sewing threads, etc. At present, the varieties of coarse denier yarn produced in China are mainly 200D to 300D, the breaking strength of the fiber is about 3.6CN / dtex, and the breaking elongation is 28% (that is, the toughness is average). The winding equipment used is basically two rolls or three rolls. Roller drafting and shaping, the quality is subject to certain restrictions. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a coarse denier polyester FDY yarn with a medium strength between 400 and 600 D, whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/092D01D5/096D01D5/16D01D5/253
Inventor 陈荣荣王金香周卫中钟传武
Owner JIANGSU HUAYA FIBER
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