Supercritical carbon dioxide dyeing method of ready-made clothes

Abstract

The invention relates to a supercritical carbon dioxide dyeing method of ready-made clothes, comprising the process flow of: putting dyes and ready-made clothes into a supercritical carbon dioxide dyeing device in sequence; heating to enable the temperature of the device to be 70-150 DEG C; starting a high-pressure system to enable the pressure of the system to be 15-25MPa; dyeing under the condition for 50-120min; then releasing pressure and keeping the pressure at 4-5MPa, and recovering carbon dioxide and the dyes at the temperature of 25-40 DEG C; and releasing pressure and cooling to be in a normal state to obtain dyed fabrics. The method has the characteristics that anhydrous dyeing is carried out on grey ready-made clothes; the dyes and the carbon dioxide which are involved in dyeing can be recovered; the ready-made clothes do not need washing after dyed; the processing is not limited by the size of an order; the production cycle is short; only the ready-made clothes are dyed and no leftovers are left; the method actually saves energy, protects environment and meets the development requirements of low-carbon economy.

Description

technical field The invention belongs to the field of textile printing and dyeing. It specifically involves the use of carbon dioxide dyes dissolved in a supercritical state for garment printing and dyeing. Background technique Since my country's accession to the WTO, while the textile industry has developed at a high speed, clean production, energy conservation and emission reduction have also achieved certain results. However, under the circumstances of increasing shortage of water resources and deteriorating environmental pollution, resources and the environment still restrict the healthy and sustainable development of the textile industry. The water consumption of my country's textile industry remains high, and the pollution problem is more prominent. According to the statistics of the State Environmental Protection Administration, the total amount of wastewater discharged by the printing and dyeing industry ranks fifth in the total discharge of the national manufactur...

AI Technical Summary

Problems solved by technology

However, the current dyeing of garments still stays in the traditional dyeing method, which cannot get rid of the plight of water and energy consumption, and cannot meet the requirements of sustainable development in a low-carbon economy. [11～13]

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