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Melt direct spinning superfine denier terylene FDY filament and preparation process thereof

A technology of ultra-fine denier polyester and melt direct spinning, which is applied in the directions of melt spinning, filament forming treatment, filament/thread forming, etc. The effect of reduced energy consumption, improved intrinsic quality, and reduced processing costs

Active Publication Date: 2010-01-27
JIANGSU HUAYA FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of product is currently monopolized by some companies in Japan, South Korea, Taiwan, etc. Due to the limitations of the two-step production method and the limitations of domestic supporting equipment such as spinneret design, micro-metering pumps, etc. Most of them are imported from abroad, and the price has remained high, which seriously restricts the processing costs of downstream textile enterprises.

Method used

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  • Melt direct spinning superfine denier terylene FDY filament and preparation process thereof
  • Melt direct spinning superfine denier terylene FDY filament and preparation process thereof
  • Melt direct spinning superfine denier terylene FDY filament and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 produces the FDY silk (single-filament fineness dpf is 0.436) that specification is 68dtex / 156F.

[0019] This product adopts the one-step production route of melt direct spinning. The polyester melt (PET) obtained by PTA+EG polymerization passes through the melt filter, then is boosted and transported by the gear booster pump, cooled by the cooler, and then distributed to each spinning machine. Each spinning position sends the melt to each spinning assembly quantitatively by a metering pump. After the melt is filtered and uniformly pressurized through the filter layer in the spinning assembly, it passes through the capillary-shaped spinneret hole (the spinneret is in the spinning In the assembly, the capillary diameter of the plate is 0.16mm, L / D=3.4, and the diameter of the plate surface is 70mm.) It is sprayed out in a thin stream, and a fairing is installed in the primary fiber cooling area, and the melt stream passes through the cooling area After bein...

Embodiment 2

[0027] Example 2 produces FDY yarns with specifications of 110.5dtex / 192F (single yarn fineness dpf is 0.576).

[0028] This product adopts the one-step production route of melt direct spinning. The polyester melt (PET) obtained by PTA+EG polymerization passes through the melt filter, then is boosted and transported by the gear booster pump, cooled by the cooler, and then distributed to each spinning machine. each spinning position, the melt is quantitatively sent to each spinning assembly by a metering pump, and the melt is filtered and uniformly pressurized through the filter layer in the spinning assembly, and then passes through the capillary-shaped spinneret hole (the spinneret is in the spinning In the assembly, the capillary diameter of the plate is 0.15mm, L / D=3, and the diameter of the plate surface is 70mm.) It is sprayed out in a thin stream, and a fairing is installed in the primary fiber cooling area, and the melt stream passes through the cooling area After being...

Embodiment 3

[0036] Embodiment 3 production specification is the FDY silk (single filament denier dpf is 0.385) of 55.5dtex / 144F

[0037] This product adopts the one-step production route of melt direct spinning. The polyester melt (PET) obtained by PTA+EG polymerization passes through the melt filter, then is boosted and transported by the gear booster pump, cooled by the cooler, and then distributed to each spinning machine. Each spinning position sends the melt to each spinning assembly quantitatively by a metering pump. After the melt is filtered and uniformly pressurized through the filter layer in the spinning assembly, it passes through the capillary-shaped spinneret hole (the spinneret is in the spinning In the assembly, the capillary diameter of the plate is 0.15mm, L / D=2.7, and the diameter of the plate surface is 90mm.) It is sprayed out in a thin stream, and a fairing is installed in the primary fiber cooling area, and the melt stream passes through the cooling area After being...

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Abstract

The invention discloses a melt direct spinning superfine denier terylene FDY filament and a preparation process thereof. The superfine denier terylene FDY filament is prepared by the following steps: adopting a production line of a melt direct spinning one-step method, using a spinning plate with the diameter of capillary of 0.15 to 0.2mm, L / D of 2.6 to 3.6 and diameter of plate surface of 70 to 90mm, installing fairing in a fiber cooling area and adopting a two-way oil feeding system to directly produce the superfine denier terylene FDY filament; and the obtained dpf (denier per filament) is 0.3 to 0.6, the number of orifices of one strand of filameter is 144F to 192F. The process routine can improve internal quality, simultaneously greatly reduces the processing cost, and has the capability of replacing imported similar products.

Description

technical field [0001] The invention relates to a production technology of polyester filaments, in particular to a melt direct spinning ultrafine denier polyester FDY yarn and a preparation process thereof, belonging to the technical field of chemical fibers. Background technique [0002] With the improvement of living standards and quality of life, people's requirements for clothing are getting higher and higher. Cotton, linen and ordinary synthetic fiber fabrics can no longer meet people's growing needs due to their own characteristics and inherent limitations. , especially in terms of outerwear and plush toys, people have put forward higher requirements, such as soft fabrics, good drapability, elasticity, dryness and fineness. [0003] The fiber has a large number of holes, and the fineness of each hole, that is, the fabric made of ultrafine denier fibers in the range of 0.3-0.6 dpf feels particularly soft, and at the same time, the specific surface area of ​​the fibers i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D5/092D01D5/096D01D1/06D01D1/10
Inventor 周卫中王金香陈荣荣刘新平钟传武
Owner JIANGSU HUAYA FIBER
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