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2022
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The process of textile printing and dyeing
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The main process of textile printing and dyeing is divided into three steps:
Pre treatment: From the previous high alkali, high water, high temperature, and phosphorus containing technologies, it has gradually transformed into today's low alkali, biological, low water, low temperature, cold reactor, and phosphate-free technologies. This not only reduces wastewater discharge, but also significantly reduces production costs, and saves labor and electricity. Therefore, refined, saturated, and stable printing and dyeing auxiliaries are no longer the same chemical components as phenols, benzenes, and phosphorus, but a new concept of environmentally friendly chemicals, Fully satisfied with the new ideas of the day, the production of new technologies, and the new concept of international environmental protection. Due to meeting this demand, the pre-treatment printing and dyeing auxiliaries have undergone revolutionary changes
Dyeing and printing: As is well known, dyeing and printing technology is the main cause of color pollution in water. Therefore, reducing the discharge of dye waste and promoting the absorption of dyes into the fabric as much as possible have become the key to technological improvement. This requires dyeing and printing assistants to be satisfied with reducing the addition of dyes without affecting the depth of dyeing, and on the other hand, not increasing dyeing costs, but also promoting dyeing fastness. Therefore, new types of dyeing and printing aids have to be applied, and the starting point of the development of dyeing and printing aids is focused on these three aspects. Then, dyeing and printing aids have now leapt into a new era.
Post cleaning: The post cleaning process of textile printing and dyeing is a relatively less polluting process, so this technology needs to focus on its functional requirements such as functionality, safety and environmental protection, aesthetics and comfort, stretch and breathability, smoothness and freshness. Wrinkle resistant products have evolved from formaldehyde containing products to formaldehyde free products, color fixation has evolved from formaldehyde free products to today's formaldehyde free products, and soft products have evolved from water repellent amino silicones to hydrophilic polyether blocks From yellowing to non yellowing, from high cost to low cost, from environmentally friendly to environmentally friendly, and so on
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