Reactive printing, as the name implies, means that our printing dyes are processed using reactive printing. Reactive printing design elements are more diverse: plant flowers, geometric figures, English letters, and different color blocks are organically combined to express different design styles through design techniques. Such fabrics are adapted to a wider range of people and have a longer application time. The active printing fabrics are bright in color, have good color fastness, soft handfeel, and can be washed without discoloration for a long time.
Reactive dyes are also called reactive dyes. It contains reactive groups that react with fiber molecules. In the process of dyeing and printing, reactive groups of reactive dyes and fiber molecules form a bond, so that the dye and fiber form a whole. Make fabrics with excellent dust-proof performance and high cleanliness. Long-time washing does not fade.
Reactive printing: the use of reactive dyes penetrate into the fabric, and the formation of the printing paint printing: the use of paint on the fabric cover, and the formation of the printing of two, will see that there is a big difference!
The general active printing and dyeing can ensure that the environment is harmless to humans, and the color and fabric feel better, and there will be no hard and soft feeling.
The following talk about the technical points of active printing:
1, the choice of dye:
a. Reactivity: Moderate; b. Directness: medium to low. In addition, the fixation rate of the dye itself must be considered: the fixation rate is too low, and the amount of dye is large, which is not favorable for post-washing. In general, domestic m-type and foreign p-types are selected depending on the specific color.
2, steaming requirements:
Under saturated steam, 102 degrees x 8 minutes is sufficient. According to the customer's requirements for quality, it seems that using a baking method is not the best choice.
3, after washing process:
a, after the wash must at least ensure that the first three troughs cold wash, and strong flush, put the bottom empty; b, if the sink a few, you can increase the cold wash time, to meet the paste Enough puffing time to speed up the shedding of excess dye; c, soaping, do pay attention to use non-alkaline additives, the best choice is chelating dispersant (such as Degu sn-s).
In addition, it is also a very effective method to properly use some high-color compound pastes instead of seaweeds in order to reduce the amount of dye used to reduce the washing water burden.
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