What is the difference between domestic watermark-free dyeing technology and foreign ColorDry waterless dyeing technology?

Guide: How to make textile enterprises use less or even no water during dyeing and finishing has always been a big problem. Recently, Luyu Textile Technology Co., Ltd., which was invented by Zhejiang Science and Technology Center of Haining High-tech Zone, has innovated and developed the world's first waterless dyeing and finishing technology, which is favored by the market.

We use eco- friendly organic polymer non-aqueous media instead of water as a dyeing medium, completely subverting the traditional dyeing process, which is a huge innovation revolution. Liu Jinqiang, chief technical officer of Luyu Textile Technology Co., Ltd. introduced that once this technology enters industrial application, it will promote a milestone change in the green production of textile printing and dyeing industry . At present, the company has developed a non-aqueous dyeing test for reactive dyes. Successfully, compared with the traditional process, it can save water by 70%, save dyes by 15%~20%, save auxiliaries by 60%~80%, and dyeing medium recovery can be controlled above 97%.

Next, we plan to build a new demonstration production line, which will provide the other company with complete sets of technology, and secondly, it can be used as an entity to introduce technology to other companies. Liu Jinqiang said.

Analysis: The world is paying attention to the waterless dyeing technology, why Luyu Textile Technology Co., Ltd. can develop this process, although it has not been mentioned in the text. What is the difference between him and Nike using ColorDry waterless dyeing technology? The spectators can think for themselves.

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Nike has finally released the first consumer product made with ColorDry's water-free fabric.

ColorDry was developed by DyeCoo Textie Systems of the Netherlands to reduce the use of water and chemicals, and Nike is one of the company's investors. DyeCoo uses recycled carbon dioxide to replace water, and each dyed T-shirt saves 30 liters of water. This technology not only benefits the environment, it also ensures color saturation during the dyeing process, and it saves energy and avoids added chemicals.

“Creating this technology that changes the traditional dyeing rules is a long process. We have been working hard for more than ten years. This technology is not only beneficial to Nike or any brand, but also the impact of DyeCoo technology on the market. The work is worthwhile. We think this is an important step towards the revolution of the textile printing and dyeing industry. This product line proves that our technology is economically viable and suitable for mass production, which can greatly reduce the impact on the environment.” DyeCoo CEO Mates Blacker Say.

Nike's new line also includes Nike's Dri-FIT technology, which removes sweat away from the body through knitted fabrics. The polo shirt is also made of 100% recycled polyester fiber, which adds to its resilience. ColorDry polo shirts are available in six different colors.

According to media reports, ColorDry Fabrics (2013) has started production at a new waterless dyeing and finishing plant in Taiwan, which was established by Taiwan's Far East New Century Company.

Currently, it takes an estimated 100-150 litres of water to process 1 kg of textiles. According to industry analysts, more than 39 million tons of polyester fiber needs to be dyed every year before 2015. This new technology has a lot of room for application and can reshape the printing and dyeing industry.

Nike is one of several companies involved in the Detox Detox Challenge, a campaign launched two years ago by Greenpeace, an environmental pressure group that aims to achieve zero emissions of hazardous chemicals from the supply chain by 2020.

The detoxification campaign proposed one of the steps to achieve this goal and the joint “road map”, which emphasizes the problem of using a large amount of water in the process of dyeing, finishing, etc., which is that the wastewater treatment between different plants is very different. .

Nike said it expects DyeCoo's supercritical liquid carbon dioxide, or "SCF" carbon dioxide dyeing technology, to have a particularly positive impact on the textile printing and dyeing industry in Asia and will also extend to the world's textile industry. With the increasing scale of this technology, a large amount of traditional textile printing and dyeing water will no longer exist, and it is no longer necessary to use fossil fuels to heat large amounts of water.

The removal of water from the textile dyeing process also eliminates the risk of sewage discharge and environmental hazards. The carbon dioxide used in DyeCoo's dyeing process is also recycled and reused.

Waterless dyeing technology is currently limited to polyester fabrics, but new research is underway to expand its range of applications to other natural and synthetic fabrics.