Classification Knowledge Of Printing Machinery

According to different

Printing methods can be divided into four types: roller printing, screen printing, pfer printing and digital printing.

1. Roller printing

In the printing process, the paste is stored on the concave surface of the flower barrel, and then pferred to the fabric.

Characteristics: high labor productivity and low production cost.

Print patterns clear, fine lines, rich levels.

But it is limited by the size and color of the unit, and the tension of the fabric is larger when printing.

2. Screen printing

3. Transfer printing

When printing, first print the pattern and dye the dyed ink to the paper and pfer it into the pfer printing paper. Then pfer the front side of the printed paper tightly to the front side of the printed fabric and move it into the pfer printing machine. Under certain conditions, pfer the dye on the pfer printing paper to the fabric.

Features: it can print patterns with special fine outline, high artistry and more layers.

There is no need to wash, steaming, drying and other processes, so energy saving and pollution free.

It is also suitable for printing on polyester and nylon fabrics.

4, digital printing:

Reactive dyes printing and pigment printing for cotton fabrics

The printing process of reactive dyes can be divided into two groups according to the different dyes.

One phase method is

It also contains alkali fixative.

One phase method is suitable for reactive dyes with low reactivity, and the alkaline pigment used in printing paste has little effect on the stability of color paste.

The two phase rule is that the colorant does not contain alkali agents. After printing, alkali treatment is applied in various ways.

Direct printing of coatings

Pigment printing depends on the film formed by adhesives to mechanically adhere the coating to the surface of the fabric, so it is suitable for mixing all kinds of fibers.

Things.

Pigment printing process is simple, after printing heat treatment can be completed, no need to wash water, printing effect is good, can print fine lines, no stain of white land danger.

Paint chromatography is complete, color matching is convenient, but because of the hard handle and poor friction fastness, so at present, for printing fabrics, it is only limited to lines and small area of flower shape.

Burnt out printing: rotten fabric is made of two different fibers interwoven or blended. One of the fibers can be destroyed by a chemical agent while the other fiber is not affected, resulting in a special style of rotten flowers.

。

Usually acid resistant fibers such as silk, nylon, polyester, polypropylene and other fibers and cellulose fibers such as viscose fiber, cotton and other interwoven or blended fabric.