In recent years, the textile industry in science and technology, fashion, green areas of development innovation, especially in the "low-carbon economy", energy saving and emission reduction caused by the industry attaches great importance to the moment, China's chemical fiber industry is looking for a cleaner way of dyeing, to solve the long-term environmental pollution problem of dyeing link.At present, the use of Color Masterbatch method (including polyester color masterbatch) for dyeing before spinning is recognized as an environmentally friendly coloring method.

Generally speaking, the traditional production of colored fabric needs to go through multiple processing links such as spinning (yarn), high temperature and high pressure dyeing, warping and weaving. In the dyeing process, the conventional spinning white polyester filament is dyed with disperse dyes under high temperature and high pressure, which not only has a long process flow and high temperature energy consumption, but also discharges a large amount of printing and dyeing wastewater, causing certain pollution to the environment.

There are three main advantages of Color Masterbatch (including polyester color masterbatch):

1. It can save a lot of human and energy.
2. It can greatly reduce the discharge of industrial wastewater.
3. In the field of light color or dark medium color, the cost advantage is obvious.

The experiment shows that, compared with printing and dyeing, the dyeing process before spinning is less, there is no process wastewater, and the energy consumption is low. The power consumption per ton of dyeing is about 50 degrees, and the dye utilization rate is 100%. From the perspective of dyeing quality, it has uniform color, high color fastness, light resistance, washing resistance and friction resistance.According to statistics, China's polyester chemical fiber output exceeded 40 million tons in 2017.Among them, the output of black fiber is 9.1 million tons, and that of other colors is 4.9 million tons.With more and more strict requirements on environmental protection and higher labor cost in China, it can be predicted that the printing and dyeing capacity will gradually decrease in a long period of time in the future. In the long run, more and more factories will use masterbatch (including polyester masterbatch) for stock solution coloring.

Industry insiders said that the development of pre spinning coloring technology is very important to promote the sustainable development of chemical fiber industry and even the whole textile industry, and the more important thing is the long-term social benefits. Pre spinning coloring technology can solve the problems of high energy consumption and high pollution of printing and dyeing from the source, help the textile industry achieve breakthrough progress in energy conservation and emission reduction, and bring long-term benefits to society and the industry.