THE COATING OF INKJET SUBLIMATION PAPER-DO YOU KNOW HOW IT WORKS？

Due to the low cost, environmental protection, and wide application of the inkjet sublimation paper, the sublimation printing is now more and more popular among the public, and the sublimation technology is not only suitable for small-scale production, but also has no problem in large-scale production. Do you know how the coating of the sublimation coating works?

Sublimation coating is a functional part of sublimation transfer paper, it plays several important roles at the same time, like absorb the sublimation ink, separate the sublimation dye and the base paper to prevent the sublimation dye from penetrating into the base paper, and absorb the water in the sublimation ink. The third function is the drying process. 

In sublimation coating, there is a part named “water removal layer”, this part helps dealing with the drying of the paper, after the dye sublimation transfer paper is printed. We use water-based sublimation ink, means the carrier is water. Only when the water is gone, all the sublimation dyes stay at the surface, the sublimation transfer result will be as good as you expected. That’s why we always emphasis that the paper should be completely dry when you transfer it, otherwise the transfer result will not be good, because all the sublimation dye is unable to transferred to the textile when the paper is still wet. 

Then how the “water removal layer” works ?  

There are many small holes in the water removal layer, after the ink receiving layer absorbs the sublimation ink, those small holes in the water removal layer, they will absorb the water or solvent (if use solvent based sublimation ink) quickly, to help the paper drying very fast. Those small holes are round, or like balls, the diameter is 0.3-2um. According to our research, the round balls could help absorb the water or solvent the most than other shapes, that why all bro-sis sublimation dye paper adopt this type of formula. 

The content of the water removal layer is about 2-3 grams. It can be too much or too less. If too less, then it can not absorb the water or solvent in time, then the paper dries very slowly. It also can not be too much, because if there are too much balls, they will absorb the sublimation dye after they absorb all the waters or solvents, then those sublimation dyes are unable to be transferred, the transfer result will not be very good. We have one type of sublimation dye paper, named “instant dry”, it dries faster than the”fast dry” type, but the transfer efficiency is not as good as “fast dry”, is because the water removal layer is more than 2-3 grams. That’s how it works .