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Manufacturing technique of melt direct spinning polyester activate industrial yarns

A technology of melt direct spinning and production process, which is applied in the directions of melt spinning, bundle of newly blown filaments, and complete sets of equipment for producing artificial threads. It can solve problems such as unsuccessful cases and achieve a short material turnover cycle. Effect

Active Publication Date: 2013-05-08
ZHEJIANG GUXIANDAO POLYESTER DOPE DYED YARN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when this technology is applied to direct-spun polyester activated industrial yarn, the production process needs to overcome many technical difficulties, and there is no successful case in this technical field.

Method used

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  • Manufacturing technique of melt direct spinning polyester activate industrial yarns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Melt direct spinning 1000D high-strength polyester industrial yarn activated yarn.

[0026] (1), liquid phase viscosity increase:

[0027] The low-viscosity polyester melt with an intrinsic viscosity of 0.64-0.69dl / g is obtained through basic polycondensation. The low-viscosity polyester melt is pressurized by a booster pump, filtered by a duplex filter, and then transported to a vertical liquid phase The top of the viscous reactor, in the vertical liquid phase viscosifying reactor, naturally forms a film by gravity and flows down evenly. The reaction temperature of the viscous increasing reactor is 270-290°C, the pressure is 50-130Pa, and the intrinsic viscosity is 0.90-1.10dl after 90min. / g of high viscosity polyester melt.

[0028] (2), direct spinning:

[0029] The high-viscosity polyester melt after liquid-phase thickening is transported to the spinning box of each spinning position. Each spinning position adopts 16 direct spinning, and the temperatur...

Embodiment 2

[0061] Example 2: Melt Direct Spinning 1000D Low Shrinkage Polyester Industrial Yarn Activated Yarn

[0062] (1) Liquid phase thickening:

[0063] A low-viscosity polyester melt with an intrinsic viscosity of 0.64-0.69dl / g is obtained by melt polycondensation. The low-viscosity melt is boosted by a booster pump, filtered, and then transported to the top of a vertical liquid-phase viscosifying reactor. The film is uniformly flowed down, the temperature in the reactor is 270-290° C., the pressure is 50-130 Pa, and after 90-110 minutes, a high-viscosity polyester melt with an intrinsic viscosity of 0.90-1.00 dl / g is obtained.

[0064] (2), direct spinning:

[0065] The liquid-phase viscosified melt is transported to the spinning box of each spinning position. The temperature of the box is 290-300 ° C. Each spinning position contains two parallel spinning boxes. Each box is equipped with 4 A planetary pump, the planetary pump contains 1 melt inlet and 4 melt outlets, and each bo...

Embodiment 3

[0098] Example 3: Melt Direct Spinning 2000D High Tenacity Polyester Industrial Yarn Activated Yarn

[0099] (1) Liquid phase thickening:

[0100] A low-viscosity polyester melt with an intrinsic viscosity of 0.64-0.69dl / g is obtained by melt polycondensation. The low-viscosity melt is boosted by a booster pump, filtered, and then transported to the top of a vertical liquid-phase viscosifying reactor. The film is formed and flowed down evenly, the temperature in the reactor is 270-290° C., the pressure is 50-130 Pa, and after 90-110 minutes, a high-viscosity polyester melt with an intrinsic viscosity of 0.90-1.10 dl / g is obtained.

[0101] (2) Direct spinning:

[0102] The liquid-phase viscosified melt is transported to the spinning box of each spinning position. The temperature of the box is 290-300°C. Each spinning position contains two parallel spinning boxes. Each box is equipped with 4 A planetary pump, the planetary pump contains 1 melt inlet and 4 melt outlets, and ea...

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Abstract

The invention discloses a manufacturing technique of melt direct spinning polyester activate industrial yarns, and specifically belongs to the field of fiber manufacturing in polyester industry. The manufacturing technique is used for rubber framework materials and comprises melt liquid tackifying, melt direct spinning, draft heat shaping and winding molding. A vertical type liquid phase tackifying reactor is used for tackifying, a spinning technique, multi-stage draft, multi-stage relaxation heat shaping, activating treatment of oil applying on an oil nozzle, and unique high speed winding of a winder are matched, and therefore yarn activation of the melt direct spinning polyester activate industrial yarns is achieved. The manufacturing technique of the melt direct spinning polyester activate industrial yarns has the advantages of being low in energy consumption, high in the rate of production, short in production cycle and the like. Manufactured activation yarns can be used for rubber framework materials such as a conveying belt, a triangle belt, canvas, ropes and the like.

Description

technical field [0001] The invention relates to a production process of melt direct spinning polyester activated industrial yarn used for rubber skeleton materials, and belongs to the technical field of polyester industrial fiber manufacturing. Background technique [0002] Activated polyester industrial yarn is widely used in rubber skeleton materials and other occasions, such as conveyor belts, V-belts, canvas, cords, etc. It is an effective method to use activated polyester industrial yarn to enhance the adhesion between the surface of industrial yarn and rubber. At present, the solid-phase polycondensation melt-spinning process route is widely used at home and abroad to produce polyester industrial yarn activated yarn, that is, the low-viscosity polyester melt obtained by melt polycondensation is pelletized, dried, crystallized, and solid-phase polycondensed to obtain an intrinsic viscosity of 0.90. ~1.10dl / g high-viscosity polyester chips, the chips are dried and melt-s...

Claims

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Application Information

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IPC IPC(8): D01D13/00D01D5/08D01D5/096D01D1/04D01D5/12D01D10/02D01D7/02
Inventor 施建强刘雄高琳金革胡智暄杨志超石教学曾卫卫
Owner ZHEJIANG GUXIANDAO POLYESTER DOPE DYED YARN CO LTD
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