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Method for whitening polyester yarn by using cone yarn anhydrous dyeing equipment

A technology of waterless dyeing and equipment pairing, which is applied in the field of yarn dyeing, can solve problems such as defects, and achieve the effects of solving production and emissions, significant ecological environmental protection, clean production, and broad application prospects

Inactive Publication Date: 2018-11-20
QINGDAO JIFA GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the whitening process, excessive whitening agent is added to the fiber, which has adverse consequences for people wearing whitening clothes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Method for whitening polyester yarn by using cone yarn anhydrous dyeing equipment
  • Method for whitening polyester yarn by using cone yarn anhydrous dyeing equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Put the polyester cheese yarn into the dyeing kettle in the supercritical water-free dyeing equipment, the quality of the polyester cheese yarn is 500g, the diameter and height ratio of the polyester cheese yarn is 1.2:1, and the yarn drum is sleeved on the yarn central axis 10. Weigh 2.5 g of brightener according to the proportion of 0.5% of the mass of polyester cheese, and put it into the dye tank in the dye kettle 1 of the supercritical water-free dyeing equipment. Turn on the pressurizing pump 7, add an appropriate amount of CO2 to the system, and turn on the heating system. When the whole system reaches 27MPa and 120℃, turn on the circulating pump 3. Circulate the whitening for 15 minutes, turn off the circulating pump 3, open the separation valve, and the whitened fluid will be separated into gas and solid after the pressure is released by the recovery tank 6. The supercritical CO 2 Relieve pressure and become gaseous CO 2 , The incidental impurities will precipit...

Embodiment 2

[0041] Put the polyester cheese yarn into the dyeing kettle in the supercritical water-free dyeing equipment, the quality of the polyester cheese yarn is 500g, the diameter-to-height ratio of the polyester cheese yarn is 0.6:1, and the yarn drum is sleeved on the yarn central axis 10. Weigh 1g of brightener according to the ratio of 0.2% of the polyester yarn quality. Put it into the dye tank in the dye kettle 1 in the supercritical water-free dyeing equipment. Turn on the pressurizing pump 7, add an appropriate amount of CO2 to the system, and turn on the heating system. When the whole system reaches 17MPa and 80℃, turn on the circulating pump 3, circulate the whitening for 60 minutes, close the circulating pump 3, open the separation valve, the whitened fluid will be separated from the gas and solid after the pressure is released by the recovery tank 6, supercritical state CO 2 Relieve pressure and become gaseous CO 2 , The incidental impurities will precipitate, and CO 2 Af...

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Abstract

The invention provides a method for whitening polyester yarn by using cone yarn anhydrous dyeing equipment. The method is characterized in that (1) polyester cone yarn is loaded into a dyeing kettle and sleeves a yarn middle shaft, according to the technological requirements, a polyester special whitening agent is weighed as required and added into a dyeing tank of the dyeing kettle, and a systemis turned off; (2) a booster pump is turned on, moderate carbon dioxide is added into the system, a heating sleeve and a heat tracing circuit are turned on, when the temperature and pressure intensityin the dyeing tank achieve a technological parameter set value, a circulating pump is turned on, at the moment, the whitening agent is dissolved gradually and achieves into the dyeing kettle along with a carbon dioxide fluid to carry out diffusion and whitening on the polyester cone yarn; (3) according to the technological time, the circulating pump is tuned off after running for a while, a separation valve is opened, the whitened liquid is recovered and separated; (4) lastly, the dyeing kettle is opened, and the whitened polyester cone yarn is taken out. The method for whitening the polyester yarn by using the cone yarn anhydrous dyeing equipment has the advantages that the production efficiency is high, the usage amount of the whitening agent is less, the whitening effect is good, and the method is suitable for batch production.

Description

Technical field [0001] The invention belongs to the technical field of yarn dyeing, and relates to the whitening technology of polyester yarns, in particular to a method for whitening polyester yarns by using an anhydrous dyeing device for cheese yarns. Background technique [0002] my country is a country with a serious shortage of water resources, and the water resources environment is constantly deteriorating. Coupled with the waste of water, the water resources situation is not optimistic. In the traditional dyeing process, we usually use water as the main medium. A large number of chemical substances such as dyes and surfactants will have a negative impact on the sustainable development of the environment. In addition, the wastewater discharged from dyeing needs to be neutralized and settled, which requires a lot of manpower and material resources. According to incomplete statistics, my country's textile printing and dyeing industry consumes 1.7 billion tons of water annua...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06B9/06D06L4/60
CPCD06B9/06D06L4/60D06B19/00D06B23/14Y02P70/62
Inventor 王健杨为东万刚刘崇波刘邵冰林大鹏王大伟戴志敬杜吉浩王超郭堃
Owner QINGDAO JIFA GROUP