A preparation method of high-strength and low-shrinkage ultra-bright embroidery thread polyester drawn yarn

A low-shrinkage, embroidery thread technology, applied in the direction of single-component polyester rayon, stretch spinning, rayon manufacturing, etc., to achieve high embroidery speed, improve cohesion performance, and increase the effect of network degree

Active Publication Date: 2019-06-25
ZHEJIANG HENGYI HIGH TECH MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, with the development of society, the performance requirements for polyester embroidery threads are also constantly increasing, so the above polyester embroidery threads can no longer meet people's needs for the performance of polyester embroidery threads. Therefore, it is necessary to develop a higher strength, Polyester embroidery thread with lower shrinkage and better brightness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for preparing high-strength and low-shrinkage ultra-bright embroidery thread polyester drawn yarn, comprising the following steps:

[0042] The raw material is pre-crystallized, and the raw material is a super bright high-viscosity polyester chip, and the viscosity of the polyester chip is 0.72dl / g; the dry hot air is used for pre-crystallization; the temperature when the raw material is pre-crystallized is 165 ℃, and then dry with hot air, the drying temperature is 170 ℃, the air dew point is -60 ℃, the drying time is 5 hours, and the moisture content of the raw material is 30ppm.

[0043] Filtration, the filtration is that the raw material is filtered through a static mixer after being extruded by a screw;

[0044] For spinning, the filtered raw materials enter the spinning box through the pipeline, and the temperature of the spinning box during spinning is 292°C. After being accurately metered by the metering pump, it enters the spinneret of the spinning as...

Embodiment 2

[0048] A method for preparing high-strength and low-shrinkage ultra-bright embroidery thread polyester drawn yarn, comprising the following steps:

[0049] The raw material is pre-crystallized, and the raw material is a super bright high-viscosity polyester chip, and the viscosity of the polyester chip is 0.70dl / g; the dry hot air is used for pre-crystallization; the temperature when the raw material is pre-crystallized is 170 °C, and then dry with hot air, the drying temperature is 175 °C, the air dew point is less than -58 °C, the drying time is 5 hours, and the moisture content of the raw material is 30 ppm.

[0050] Filtration, the filtration is that the raw materials are filtered through a static mixer after being extruded by a screw.

[0051] For spinning, the filtered raw materials enter the spinning box through the pipeline, and the temperature of the spinning box during spinning is 288°C. After being accurately metered by the metering pump, it enters the spinneret of...

Embodiment 3

[0055] A method for preparing high-strength and low-shrinkage ultra-bright embroidery thread polyester drawn yarn, comprising the following steps:

[0056] The raw material is pre-crystallized, and the raw material is a super bright high-viscosity polyester chip, and the viscosity of the polyester chip is 0.80dl / g; the dry hot air is used for pre-crystallization; the temperature when the raw material is pre-crystallized is 175 °C, and then dry with hot air, the drying temperature is 180 °C, the air dew point is less than -56 °C, the drying time is 5 hours, and the moisture content of the raw material is 30 ppm.

[0057] Filtration, the filtration is that the raw materials are filtered through a static mixer after being extruded by a screw.

[0058] For spinning, the filtered raw materials enter the spinning box through the pipeline, and the temperature of the spinning box during spinning is 296°C. After being accurately metered by the metering pump, it enters the spinneret of...

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Abstract

The invention relates to the field of polyester fiber differentiation, and discloses a preparation method of high-strength low-shrinkage super-bright embroidery thread polyester drawn yarn. The methodcomprises the steps of 1 pre-crystallizing, wherein a polyester chip with the viscosity being 0.70-0.80 dl / g is selected as a raw material, and pre-crystallizing is performed; 2 drying, wherein the raw material is subjected to hot air drying again, the water content is controlled to be smaller than 30 ppm, and then the raw material is fed into a screw extruder; 3 filtering, wherein after the rawmaterial is extruded through a screw, a static mixer is adopted for filtering; 4 spinning, wherein a single hole of a spinneret plate is in a trilobal shape; 5 cooling and oiling; 6 winding forming, wherein filaments obtained after cooling and oiling are stretched through hot rollers, and winding forming is performed after shaping; two pairs of hot rollers are included, wherein one pair of the hotrollers are stretching hot rollers, and the other pair of the hot rollers are shaping hot rollers. The polyester drawn yarn obtained through the method has the advantages of being high in embroidering speed, high in strength and brightness and stable in shape, and producing little fuzziness and broken yarn.

Description

technical field [0001] The invention relates to the field of polyester fiber differentiation, in particular to a method for preparing high-strength and low-shrinkage ultra-bright embroidery thread polyester drawn yarn. Background technique [0002] Polyester glossy drawn yarn has beautiful color after dyeing, and is widely used in polyester embroidery thread. At present, the conventional triangular glossy drawing yarn is mostly used, and the cloth surface fluffs up from time to time when it is used, and the shrinkage rate is high, causing problems such as cloth surface shrinkage. [0003] The applicant's prior patent with the application number CN201010598788.2 discloses a production method of imitation viscose polyester embroidery thread, including preparing a light-modified polyester, and then aiming at the characteristics of the light-modified polyester , melt spinning and draft winding to obtain modified polyester drawn yarn, then twist the modified polyester drawn yarn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/16D01D10/02D01D5/088D01D5/096D01F6/92D01F1/10C08G63/183C08K3/04
CPCC08G63/183C08K3/04C08K2201/001D01D5/088D01D5/096D01D5/16D01D10/02D01F1/10D01F6/92
Inventor 胥如四雷鸣秦庆才王军奇邹志广
Owner ZHEJIANG HENGYI HIGH TECH MATERIAL
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