Anti-overprinting is especially obvious in medium and low speed printing, and the phenomenon of anti-overprinting is greatly reduced in high-speed printing. So how to solve the problem of anti-overprinting in custom Paper bag printing? The following and Xing printing small edition for you to explain.

First of all, the key to solve the problem of anti-overprinting is to analyze the causes of the generation, anti-overprinting, generally the front color ink to the printing plate of the post-color ink, so as to enter the post-color ink slot, change the color of the post-color ink, and eventually lead to printing can not continue, such as yellow ink gradually into light green color, red ink gradually into purple color. Hexing printing believes that it can be solved from the following aspects.

1, improve the printing speed to improve the printing speed can significantly reduce the contact time between the post-color ink and the former color ink, which is also the reason why the anti-overprinting is especially obvious when low-speed printing, and there is basically no anti-overprinting phenomenon in high-speed printing.

2, adjust the ratio of diluting solvent of the post-color ink, reduce the dissolution ability of the post-color ink when in contact with the pre-color ink, that is, when diluting the post-color ink, add a part of isopropyl alcohol, and use toluene as little as possible;

3, adjust the composition of the printing ink, first of all, you can use the method of improving the adhesion of the front color ink on the BOPP film, so that when the two layers of ink contact, the front color ink is still attached to the BOPP film, in the CLPP system of ink, generally can increase the CLPP content to solve. Secondly, it can improve the drying speed of the pre-color ink, increase the drying temperature of the pre-color ink, and prevent a small amount of unvolatilized solvent in the ink film.

The above is the company for you to introduce some practical methods to solve the problem of anti-overprinting in the custom Paper bag printing, I hope to help you. If you still do not understand the place, welcome to inquire, we will be professional for you to answer!

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