There are two main methods of fabric printing and dyeing, one is traditional paint printing and the other is reactive printing and dyeing as opposed to paint printing and dyeing.
Reactive printing and dyeing means that the active gene of the dye is combined with fiber molecules under certain conditions, the dye penetrates into the fabric, and the chemical reaction between the dye and the fabric makes the dye and the fiber form a whole; paint printing and dyeing is the physical combination of the dye and the fabric through the adhesive The way of printing and dyeing.
The difference between reactive printing and dyeing is that the hand feel of reactive printing and dyeing is smooth and soft. The common saying is that the fabric of reactive printing and dyeing looks like mercerized cotton. The effect of printing and dyeing is very good from both the positive and negative aspects; while the fabric of coating printing and dyeing feels stiff. It looks a bit like an ink painting effect.
1. Paint printing and dyeing characteristics
The process is simple and the cost is low. The color fastness is poor, it is used once after washing; the environmental protection performance is poor, and the formaldehyde content is higher than that of reactive printing and dyeing; the printed parts are sticky and appear hard without adding softener. If softeners are added, the formaldehyde content is even higher.
2. Features of reactive printing and dyeing
Good air permeability, excellent fastness, soft hand feeling, but there are also problems such as cumbersome printing process, long process and difficult processing. Generally, reactive printing and dyeing can ensure that environmental protection is harmless to people, and the color and fabric feel better, and there will be no hard and soft feelings.
3. Identification method
Recognize the color: The color of pigment printing is not bright, but the color is dim, giving people a feeling that the color is floating on the surface of the cloth. It's like putting a coat of paint on the wall.
Look at the gloss: Pigment printing fabrics have been "calendered" before they leave the factory, so you can see that the cloth surface has a shiny feeling. It may be pigment printing. The smoothness obtained by calendering is one-time. After washing Will disappear.
Smell the smell: Pigment printing adds a lot of binders, and it is directly shaped without washing, so there will be a strong smell in the finished fabric.
Touch feel: Pigment printing has a hard feel. In order to cover up this shortcoming, the fabric maker added a softener when setting the shape, and the finished product will feel softer after being "calendered", and most of it will fall off after washing.