The Importance of Printing Thickener

Printing thickener: It is a kind of thickener most commonly used in the printing industry. In printing, two main materials, glue and color paste, are used. And because under high shear, the consistency will be reduced, so it is necessary to use a thickener to increase the consistency of the printing material, then printing thickener is used.

Printing thickener china's main role is to provide good rheological properties, transfer the glue or color paste on the printing screen and printing roller to the fabric, combine the dye and fiber, and ensure the outline of the printing pattern. distinct. The pattern is clear, the color is bright and uniform; when the dye is fixed, the reaction product and residue are easily removed in the downstream process, making the fabric feel soft. It can be seen that the printing thickener plays a very important role in the printing industry.

Development History:

Printing thickeners have a long history of development. The slurry used a long time ago was starch or modified starch. This thickener is called a natural thickener, but this printing thickener has high use cost, low color depth, poor vividness, and resistance The fastness to washing is also poor, and the texture of the fabric is not satisfactory. At present, these types of thickeners have been gradually eliminated. It was only in the 1950s that people introduced A-state pulp, which made printing technology widely used. A state pulp thickener is formed by high-speed emulsification of kerosene and water under the action of emulsifier. Because this thickener contains more than 50 # kerosene, and the large amount used, it causes serious pollution to the atmosphere and the risk of explosion. In addition, the consistency of the printing paste is not easy to adjust, and the smell of kerosene will remain on the fabric after printing. So people are still not satisfied with this type of printing thickener.

Printing Thickener

In the 1970s, people began to develop and produce synthetic thickeners. The advent of synthetic thickeners has greatly promoted the development of printing production and raised the printing technology to a new level. It solves the problems of environmental pollution and safety. Moreover, the synthetic thickener has the advantages of good thickening effect, convenient transportation and storage, simple preparation, clear outline, bright color and so on.

Classification of printing thickener:

There are many types of printing thickeners, currently divided into two major categories: nonionic and anionic. Nonionic thickeners are mostly polyethylene glycol ether derivatives. Such thickeners should have a wide range, but the thickening effect is poor, the amount of addition is large, and a certain amount of kerosene is still required. Therefore, this also limits its further development.

The anionic thickener is a polymer electrolyte compound, which is a copolymer with light crosslinking. It is characterized by low viscosity, good thickening effect, good stability, low addition, good rheology, and printing effect. good. The most common are polyacrylic compounds. At present, the most common polyacrylic acid compound is an anionic polymer electrolyte. It uses emulsion polymerization method to effectively polymerize water-soluble monomers into milky products. It is convenient for making paste and the stability of original paste and color paste. The printed fabric is soft to the touch and can be stored for a long time. That is what we often say about PTF thickener.