Printing, as distinguished from dyeing, the process by which a dye or coating is applied to a fabric to form a pattern.

In 1784, three Frenchmen founded the world’s first cotton printing factory.

Over the past 230 years, printing technology has developed in a variety of ways. Today, encyclopedia xiaobian will check the types of printing

I. Classification according to printing process:

1. Direct printing (Over print, Wet print)

Direct printing is a kind of printing directly on white fabric or on fabric that has been pre-dyed. The latter is called overprint (also known as bottom printing), and of course the print is much darker than the bottom color. About 80% of printed fabrics on the market are printed directly. (Here direct printing generally refers to the printing of dyes, used to distinguish from the paint printing below)

Question: How to distinguish white print from dye print?

If the background color of the fabric is the same shade on both sides (due to piece dye) and the print is much darker than the background color, then it is a cover print, otherwise it is a white print.

2. Discharge printing

Choose not dyes to dye the base of discharge paste, resistance to dry, use detergent containing discharge agent or with resistance to discharge at the same time the design and color of the dye printing paste printing, post-processing, printed in ground are destroyed and the decolorization of dye, the color of the earth formed white pattern (called white discharge) or color pattern formed by the design and color dyes dyeing (called colour printing). Also known as pulling white or color pulling.

In contrast to direct printing, the production costs of printed fabrics are high, and great care and precision must be taken to control the use of the reducing agent required.

Question: How to distinguish whether the fabric is a discharge print?

If the fabric has the same color on both sides of the background (because it is a piece dye), and the pattern is white or different from the background, and the background is dark, it can be confirmed as a discharge printing fabric.

Careful examination of the reverse side of the pattern reveals traces of the original background color (this occurs because dye-destroying chemicals do not fully penetrate the fabric).

3, anti-dyeing printing

A chemical or waxy resin printed on a white fabric that prevents or prevents penetration of dye into the fabric. The purpose is to give a base color that will show off the white pattern. Note that the result is the same as in discharge printing, however the method used to achieve this result is the opposite of discharge printing.

Dyeing printing method is not widely used, generally in the background can not be used in the case of extraction. Most dye-proof printing is done by means such as craft or hand printing (e.g. wax printing) rather than on a mass production basis.

Because discharge printing and anti-dyeing printing produce the same printing effect, so generally through naked eye observation often can not be identified.

Burn out print (Burn out print)

A rotten print is a pattern that is printed with a chemical that breaks down the fabric. So the contact between the chemicals and the fabric can produce holes. The edges of holes in tattered prints are always prematurely worn away, so the fabric has poor wear resistance.

Another type of rotten print is a fabric made of blended yarns, core-spun yarns, or a mixture of two or more fibers. Chemicals can destroy one fiber (cellulose), leaving others intact. This printing method can produce many special and interesting printing fabrics.

5, wrinkle shrinkage flower/foam printing

Using the printing method on the fabric of the local application of chemicals can make the fiber expansion or contraction, through proper treatment, so that the printed part of the fiber and non-printed part of the fiber expansion or contraction difference, so as to obtain the surface of the regular concave and convex pattern of the product. Such as the use of caustic soda puffing agent of pure cotton printed seersucker. Also known as convex printing.

The foaming temperature is generally 110C, the time is 30 seconds, and the printing screen is 80-100 mesh.

6, Coating printing (Pigment Print)

Because the coating is not water-soluble coloring material, no affinity to the fiber, its coloring must rely on the film forming polymer compound (adhesive) coating and fiber adhesion to achieve.

Coating material printing can be used for the processing of any fiber textiles, and has more advantages in the printing of blends and interweaves, and the process is simple, wide spectrum, flower shape outline is clear, but the feeling is not good, the rubbing fastness is not high.

Paint printing is the direct printing of paint, which is often called dry printing to distinguish it from wet printing (or dye printing).

They have good or even excellent light fastness and dry cleaning fastness, so they are widely used in decorative fabrics, curtain fabrics and clothing that require dry cleaning.