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In recent years, with the energy crisis, water scarcity and rising oil prices, people’s saving and environmental protection awareness greatly enhanced; the printing and dyeing enterprises have a large pressure in lowing production costs,reducing energy consumption and discharging the waste water. So,they improve new technology to reduce the cost of production, therefore, the technology of foam dyeing and finishing is focusde on again by people.The printing and dyeing processing technology includes foam finishing, foam printing, and foam dyeing. In these techniques, foam finishing technology is the most mature and applied most widely; foam printing technology is relatively mature; because of uneven coloring problem of foam dyeing, its application is greatly restricted in textile dyeing and finishing.In order to solve the problem of uneven dyeing, foam multi-color dyeing came into being.Foam Multi-colour Dyeing is dyeing foam processing technology that some foaming additives is added directly into the RGB dye liquor, and then it is changed into the foam fluid directly, and finally using color foam for dyeing. It also combines the dual effect of dyeing and printing, by dyeing a variety of colors to make up for the way the problem of uneven staining, and which co-exist with a variety of colors in the fabric characteristics. For its randomness in pattern and diversity of color, Foam multi-colour dyeing can form a variety of different patterns.Reactive dyes has been studied in the colorful foam dyeing, but there is no pigment-foam multi-color dyeing reported. As the coating process itself has some advantages,such as a simple process, saving energy and water,etc.. if the coating process is combined with foam colorful dyeing, then this technology will save more energy and water, and more easier to develop new products.In this paper, the suitable coatings, adhesives, thickeners and foaming agents are selected,and different concentrations of the compatibility of liquid foam are analyzed. This paper also compare fastness between the paint foam monochrome printing dyeing and coating printing samples, confirmed the foam dyeing of fabrics in the relevant color fastness is better than or equal to the coating on the fabric printing process.Finally, on the basis of monochrome dyeing, Foam Multi-colour Dyeing is performed,then rendering of the color control is got. The tests indicated that pattern of Foam Multi-colour Dyeing sample is random, novel and colorful, so it is very useful for developing new product, at the same time, because of lower up-take of foam dyeing, drying energy is saved greatly and productivity is also improved.
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