Description
Sodium alginate as a warp sizing, finishing paste, printing paste and so has a long history. In printing applications, is an ideal paste, a large number used in cotton, wool, silk, synthetic printing, especially in the advent of reactive dyes, it has been for decades the application of history, so far, no Other paste can compare with that.
Its most important feature is that does not react with the reactive dyes do not produce covalent bonding, it is the beginning of the structure does not contain hydroxyl, contains only sub-hydroxy at the same time, it rings on the base of a strong electronegative carboxyl group. Therefore, it not only adsorption of dyes, as well as repulsion, easy to dye transferred from the paste to the fiber up, to maintain the clarity and uniformity of printing great benefits, so that the printed pattern clear and bright, give color the amount of high, also has a good feel and fastness.
Medium and low viscosity sodium alginate are applicable to screen-type printing and hand printing requirements, the nature of a pseudo-plastic rheology, ie shear thinning, loss of shear viscosity of the original recovery for printing Fine patterns, large Montreal, wet wet cover printing, with fine lines, contour clarity, large area printing uniformity is good.