Printing paste and the relationship between the amount of color

The amount of color imparted to the printing paste (paste), also known as the color yield, refers to the color concentration of the colored material per unit area. Normally, the printing industry knows that the fixing of dyestuff printing is based on steaming, because the printing fabric entering the steaming box encounters condensed soda in the box, the pulp film expands by water, and at the same time, a tiny dyeing bath is formed at the printing paste. Accelerates the diffusion of the dye to the fiber surface. If the affinity between the dyes of the printing pastes used is large, the dye diffusion rate will be reduced and its transfer to the fibers will be reduced, resulting in a decrease in the amount of color.

The main factors influencing the coloration of paints for printing are the binders and thickeners in the printing pastes. The transparency of the dry film after printing and the compatibility between them and the paint, ie the ability to prevent the aggregation of pigment particles Regarding, the larger the color, the smaller the opposite.

Source: China Washing & Dyeing Industry Information Center