NINGBO INNO PHARMCHEM CO.,LTD. is committed to empowering textile manufacturers with practical knowledge. This guide provides essential insights into effectively using synthetic thickeners in reactive printing recipes, ensuring optimal performance and high-quality output.

Reactive printing, known for its vibrant colors and excellent fastness on natural fibers like cotton, relies heavily on the precise formulation of the printing paste. The thickener is a critical ingredient, dictating the paste's viscosity and flow properties, which directly impact print definition, color yield, and overall application efficiency. Synthetic thickeners have become popular due to their consistent performance and ease of use.

A common approach involves preparing a stock paste first, which is then incorporated into the final printing paste. A typical stock paste preparation might involve mixing the synthetic thickener with water, ensuring complete dissolution and expansion to achieve the desired thickening effect. For example, a recipe might call for 7-9g of thickener per 100g of stock paste, stirred until fully hydrated. Additives like sodium hexametaphosphate (0-1g) can be included to further enhance paste properties.

The resulting stock paste is then combined with reactive dyes, alkali (such as sodium bicarbonate or sodium carbonate), urea (as a humectant), and potentially other auxiliaries like resist salts. A standard printing paste formulation might use 40-70g of this stock paste per 100g of printing paste, mixed thoroughly with the dyes and other components. The concentration of thickener in the final printing paste typically ranges from 3-4g per 100g, depending on the desired viscosity and printing technique.

Alternatively, direct printing paste preparation can also be employed, where the thickener is added directly to the mixture of dyes, alkali, urea, and other required chemicals. This method requires careful stirring to ensure uniform dispersion and hydration of the thickener.

It is crucial to remember that these are reference recipes. Optimal results often depend on specific factory conditions, fabric types, dye concentrations, and printing equipment. Therefore, conducting laboratory tests and adjusting formulations based on practical trials is highly recommended. This iterative process allows manufacturers to fine-tune their textile dyeing auxiliary usage for maximum efficiency and quality.

For companies looking to buy or purchase high-quality synthetic thickeners for their reactive printing needs, NINGBO INNO PHARMCHEM CO.,LTD. offers reliable products that contribute to achieving superior print definition and color brilliance. Understanding these application guidelines is key to unlocking the full potential of these advanced textile printing auxiliaries.