The method of reactive dye resist printing

Resist printing process is developed on the basis of resist dyeing process,the mechanism of the resist printing and resist dyeing the same,but there are differences,the traditional resist printing to resist agent on the printing paste,after printing by drying again Padding color.This printing process is more complicated especially when the area is too large prints resist agent easy Padding when padding liquor Lost in Indy colored padding liquor destruction caused by anti-pollution measures difficult and affect the pattern of color.Calico pattern will appear penetration,blurring the lines unclear.Resist printing overprint printing after printing ground paste of resist printing effect.It's include first printing (wet overprint) the second printing (the overprint dry),the actual production can be divided according to the pattern requirements,more applications use the former.Resist printing production process than resist printing short,simple and quick process flexibility and good quality than resist printing and easy to control,It's a major printing.

Resist printing using mechanical or chemical principles of the anti-staining and can design a variety of resist printing craft methods to reach other printing process can not be achieved.At present,the dyeing printing enterprises widely used Resist printing process in general there are several:

1.      Mechanical type resist printing

First fabric printed one kind of coating slurry to form a layer of about a few microns thick of the film (a substance) to prevent the solid color of the dye on the fiber and it can prevent the contact of the dyes and fibers so that the fibers can not be dyed,printed on subsequent go live dyes play a mechanical role of anti-pollution measures.

2.Acid releasing type resist printing (acid prevention type)

Release acid-based resist printing also known as the printing process of the paint resist activity.The reaction of the the Average Activity dye with cellulose fibers in the alkaline medium,when printing can be made ​of an alkali agent,a dye,the original paste,and other additives together printing paste.Special flower pattern. Ensure that its original design features.In design printing processes often spend on the a fine edging lines of small pigment printing chunk of the area and all over the floor pattern is reactive printing (As already discussed above).coating of fine blank part resist printing live dye.

3.Reduction type resist printing

The reactive dyes are different because of the different reactive group and the structure.Resist printing differences on the nature of this chemical is the use of so-called anti-reactive dyes reactive dyes printing.

Reactive dyes printing process in China,most of the dye.A wide range of reactive dyes.Require in-depth study and discussion,what kind of printing process is more suitable.

By Xu Xiyi