As you can see in the picture above, it is a white printed on a black non- woven bag . The printing paste of the non-woven bag is called overprint white. It is used only for non-woven bags. Many customers report that they are not strong because of the non-woven The surface is uneven, and the unevenness of the color paste printing will cause the color paste to gel when it is rubbed hard. This kind of problem was discussed earlier. It can be solved by replacing the better color paste, but the final price is whether the customer accepts it. The key is to talk about coverage.
The black cloth is printed in white. As long as the overprint is suitable for white, the quality is generally not a problem. Many customers say that the original white I made is not good-looking and looks transparent. It can be said that this is to make bad business pit and add water With the use of high-mesh screens or water-jet printing, the covering power of the color paste is reduced, but the cost reduction is more obvious.
Besides, printing red, yellow, and other colors on black non-woven bags is a costly method. If you print a single red color, you need to add a large amount of pigment to the color paste. If the amount of pigment is too large, it will cause The firmness is reduced, and if the fixing agent is added, the cost will increase again. If you add one color white and then print the color, the effect will be better, but it is a two-color overprint and the cost is not low. Therefore, when saving black non-woven bags, customers should choose to print white and print other colors. Time can be determined according to your own situation.