What are the common adverse phenomena of printing over glue?

May. 23, 2023

Insufficient gluing is one of the most common problems in the process of gluing printed matter. Insufficient gluing will cause the printed matter to be weakly bonded to other materials, or even degummed. The printing industry is a traditional manufacturing industry that prints specific images and information on different materials. Whether it's paper, fabric, metal or plastic, printed matter is an integral part of people's everyday lives. However, in the process of making printed matter, some common problems will be encountered, one of which is that the printed matter is over-glued. These problems are mainly caused by glue stagnation in the production process or improper handling by operators. In this article, RX packaging will tell you about the common adverse phenomena of over-gluing printed matter.

packaging boxes

1. Smudges appear

A common problem with laminating prints is smudging. This can be caused by using too much glue or that the glue is too thick. In addition, if the operator does not handle the material or equipment properly, glue leakage will also occur. These smudges will affect the quality of the printed matter, making the printed matter lack clarity and comfort.

2. Insufficient drying

Another common problem is that the glue does not have time to dry, and the next step is carried out, such as reprinting, lamination, etc. This can lead to sticking or scuffing of the print, making the print visibly rough or misshapen. Operators should try to ensure the drying time of the glue so as not to affect the quality of the printed matter.

3. Sticky outside

In some cases, the appearance of the print has a "sticky" appearance that seems to be contaminated with oil, mainly due to excessive glue and improper handling. Operators need to strictly control the amount of glue used to ensure that such undesirable phenomena will not appear in printed matter.

4. Uneven gelation

When the printed matter is glued, the glue may appear uneven, which will directly affect the weight, quality and adhesion of the printed matter. This unevenness is caused by insufficient viscosity during grinding or improper storage. This undesirable phenomenon can be solved by controlling the mixing, grinding and storage of glue.

5. The step distance is too large

When the printed matter is glued, if the step distance is too large, due to the shrinkage of the glue liquid, problems such as poor structural uniformity of the printed matter, pattern deformation, and different scales will appear. The operator should adjust the step distance to improve the quality of the printed matter.

In short, in the production process of printed matter, it is very common to have over-gluing of printed matter, which has a great impact on the quality and visual effect of printed matter. We need to take necessary preventive measures to avoid these problems. Especially in terms of glue quality and quantity control, operators should pay special attention to prevent the quality of printed matter from declining. Only by being meticulous and preventive can the quality and life of printed matter be guaranteed.