Wet-processing is the major energy consumer in the textile industry because it uses a high amount of thermal energy in the forms of both steam and heat). It is one of the main cost factors in the textile industry. The energy used in wet processing depends on various factors such as the process, chemicals used, machines, substrate, etc. In times of high energy price volatility, improving energy efficiency should be a primary concern for the textile industry.
Reactive dyes have a better property in terms of fastness. Dyeing of cellulosic
substrates takes place with reactive dyes under alkaline conditions. But this alkaline
conditions also facilitates also resulted in deactivation or hydrolysis of the dye. This
hydrolyzed dye adhere to the substrate and keep on getting removed during washing
treatments causing poor wash fastness. Removal of excess unfixed dye present on the
fiber surface is an important point to obtain a dyed product with excellent
fastness. This hydrolyzed dye must be removed by rinsing and using an appropriate
soaping agent in order to retain the fastness properties.
The soaping process of reactive dyed fabrics is basically carried out at 95℃
which consumes a lot of energy. Therefore, the textile industry is looking for an
energy-efficient washing concept that will not only save energy but also provide
satisfactory fastness properties. Low-temperature soaping is one such process to
which can offer the above advantages over conventional washing off process.
Rossari introduces Another Green product for sustainable textile processing i.e.
Greenwash EC Liquid Liquid - low-temperature soaping agent. It can be used for
soaping after the dyeing of cellulose fiber and its blended fabric at a 60-700C. The
temperature reduced by the 20-30 degree saves a lot of energy consumption which
makes the soaping process ecofriendly.
Excellent soaping effects for reactive dyeings on Cellulosics
Soaping at 60-70 °C possible
Provides savings in energy consumption
Improves fastness properties