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Production method and production device for superfine-denier POY (polyester pre-oriented yarn) product

A production method and ultra-fine denier technology, applied in the field of polyester filaments, can solve the problems of decreased spinning quality, heat loss, and uneven melt temperature of spinnerets

Pending Publication Date: 2020-01-31
新凤鸣集团股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a "chimney effect" in the spinning box during the spinning process. Air infiltrates from the opening of the lower part of the spinning box to form an upward airflow, so that the air around the spinning assembly absorbs heat and is discharged from the upper insulation gap, resulting in heat loss
The "chimney effect" makes the temperature of the melt inside the spinneret assembly uneven and unstable
The radial temperature difference on the surface of the spinneret is large, resulting in a decrease in spinning quality

Method used

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  • Production method and production device for superfine-denier POY (polyester pre-oriented yarn) product
  • Production method and production device for superfine-denier POY (polyester pre-oriented yarn) product
  • Production method and production device for superfine-denier POY (polyester pre-oriented yarn) product

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Embodiment Construction

[0015] The present invention is further described below in conjunction with specific embodiment, but protection scope of the present invention is not limited thereto:

[0016] With reference to accompanying drawing, a kind of production method of superfine denier POY product comprises the following steps,

[0017] Step 1: Add an insulating material layer in the gap between the spinning box and the surrounding blowing box. There is a fixing frame on the outside of the insulating material layer, and the fixing frame will press the insulating material layer tightly on the spinning box and the surrounding blowing box. In the gap between them, the air circulation can be blocked and the heat dissipation of the spinneret can be reduced; the central insert plate of the air duct is installed in the surrounding blower, and there are through holes distributed on the central insert plate of the air duct to stabilize the wind speed;

[0018] The second step: using semi-dull polyester melt ...

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Abstract

A production method for a superfine-denier POY (polyester pre-oriented yarn) product includes: adding a heat-insulating material layer to a gap between a spinning cabinet and an annular blowing cabinet, mounting an air tube central insertion plate into an annular blowing tube, and distributing through holes in the air tube central insertion plate; taking semi-matte polyester melt as a raw material, feeding the semi-matte polyester melt with the initial temperature of 276 DEG C through a melt delivery pipe into a melt cooler after pressurization by a booster pump, cooling the melt by the melt cooler, and feeding the melt into the spinning cabinet with the temperature of 288 DEG C; filtering the melt in a spinning component after metering, extruding the melt by a spinneret plate, performingcooling and curing by the annular blowing cabinet with the air temperature of 22 DEG C and the air pressure of 13Pa to obtain nascent fibers; oiling the nascent fibers by an oil nozzle, performing pre-netting, and finally performing package formation by a wings winding head. The invention further provides a production device for the superfine-denier POY product. By the production method and the production device, the denier of the POY product can be lower than 60 dtex, and the denier per filament can be lower than 0.7 dtex.

Description

technical field [0001] The invention relates to the field of polyester filaments, in particular to a production method and equipment for superfine denier POY products. Background technique [0002] The polyester porous ultra-fine denier yarn developed in the world is a new product with great development prospects. Due to its small monofilament fineness and large number of tows, the fabric has excellent hand feeling and drapability, and the appearance is gorgeous, which completely improves the wearing performance of chemical fiber products and becomes an important textile raw material with high added value. Compared with the production technology of conventional fibers, denier has higher technical requirements and is more difficult. There is a "chimney effect" in the spinning box during the spinning process. Air infiltrates from the opening of the lower part of the spinning box to form an upward airflow, so that the air around the spinning assembly absorbs heat and is discha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/62D01D13/00D01D5/092D01D5/08
CPCD01F6/62D01D13/00D01D5/092D01D5/08
Inventor 庄耀中李国平陆武良陈伟峰李飞郁强
Owner 新凤鸣集团股份有限公司
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