Application of Sodium Alginate in Textile Printing and Dyeing

Application of Sodium Alginate in Textile Printing and Dyeing


Printing Paste


Sodium alginate has a long history of application in in textile warp sizing, dyeing finishing and printing paste, of which the last one is the main leading application. As the paste of reactive dyes, sodium alginate has unique properties. The chemical reaction generated between fiber and reactive dyes helps fix the dye to fiber, and consequently this makes the dyed fiber hard, brittle and not so good in color. However, when sodium alginate acts as the printing paste, it won’t impact the dying process between reactive dyes and fiber and can print out clear and bright decorative patterns, both high in color yield and good in hand feel. Sodium alginate can be used in printing of not only cotton but wool, silk and synthetic fiber.


Sodium alginate with medium or low viscosity can be used in the printing paste from screen printing to roller printing. In fact, sodium alginate with low viscosity helps to make the printing relatively stable and this makes it possible to prepare the printing paste with higher content. The printing paste of this kind helps to produce a compact film during the drying process and to increase the coloring yield. Furthermore, the printing paste made from high quality sodium alginate caters for the particular needs in ink-jet printing.


Dyeing Auxiliary of Reactive Dyes


In printing and dyeing industry, sodium alginate can be used as the paste of reactive dyes, superior to other kinds of sizes like starch. It helps to print out textiles with bright patterns, clear lines, high and well-distributed color yield, and favorable permeability and plasticity. Sodium alginate is the best paste for modern printing and dyeing, which is widely used for the printing of such fabrics as cotton, feather, silk and nylon; furthermore, it is particularly used for the preparation of the printing sizing in allocated dyeing.


Other Industries


In papermaking, water-solubility sodium alginate can replace part of rosin pulp and experience the sizing process on the paper surface. Consequently, it helps to increase the smooth degree of paper surface and regulate the absorption of printing ink, wax and grease and to improve crumpling resistance of paper.

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On March 15th, 2013, posted in: Products and Techniques, Sodium Alginate by Tags:

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