Pigment printing

The printing method of coating printing is that the non-water-soluble substance particles with color or special effect are adhered to the fiber/fabric surface with a polymer adhesive to form the desired pattern.

Paint printing characteristics

1.the process is simple and convenient, wide applicability to fibers;

2.Complete chromatography, bright color;

3.Clear outline and distinct hierarchy;

4.The disadvantage is that the feel is hard, the fastness is poor.

Composition of pigment printing paste

1.Pigments (or color-changing pigments, pearlescent powder, functional powder, etc.);

2.Adhesive;

3.Thickener;

5.Water.

The adhesive is known as a coarse and fine printing and dyeing aid. Rough refers to different from ordinary textile additives, the price is high, the amount of addition is small, the price of the adhesive is low, the amount is large, fine refers to the nature of the adhesive determines the key properties of the paint printing feel, contour, fastness and so on, is a high technical content of the auxiliary.

Non-reactive adhesive

1.polyacrylate copolymer

2.butadiene copolymer

3.vinyl acetate copolymer

Reactive adhesive

Amino type, hydroxyl type, self-crosslinking type

Raw materials used in adhesive:

Monomer

Emulgator

Initiator

Typical problems encountered by factories

Environmental issues of emulsifiers:

The NP and OP series emulsifiers widely used in the early years are prohibited for environmental reasons, and the current adhesive manufacturers generally replace them with AEO series and isomeric 13 alcohol ether series, but their emulsifying power is difficult to match the NP and OP series, and the cost performance is not high.

Adhesive feel problem:

Due to its product characteristics, paint printing feels worse than dye printing, domestic manufacturers generally increase the softness by adjusting the proportion of soft and hard monomers and adding silicone feel regulators, but it is difficult to perfectly balance the softness and fastness.

Sinograce Chemical supply textile printing glue, as well as non-woven silk screen emulsion and nylon silk screen emulsion, welcome to buy and consult exchange