Therefore, in the production process, we should control the die-cutting indentation process to reduce the occurrence of quality problems. Now let's analyze the specific reasons for the inaccurate die cutting and pressing of gift packaging box.

Paper has obvious curl and non positioning.

When the paperboard is curled and warped, put the paperboard into the embossing plate and press it together. The contact between the paperboard and the die-cutting is uneven, resulting in the first contact between the warped surface of the paperboard and the rubber strip or sponge, which is easy to cause the paperboard to slide, resulting in inaccurate die-cutting of the product.

Therefore, in the process of die-cutting, we should ensure the good flatness of paperboard, which is an important link to improve the precision of die-cutting semi-finished products. How to reduce the curl of paperboard? It is suggested to pay attention to the moisture content of paperboard and control the speed and temperature of single-sided machine, so as not to affect the die-cutting accuracy of products.

The upper and lower paper pastes are inconsistent.

When the paper paste of the double-layer paperboard between the printing plate and the non printing plate is not correct, the non printing plate paper will protrude from the paper edge of the printing plate, resulting in the error of die-cutting positioning of semi-finished products.

Whether manual or mechanical automatic mounting, there will be no pasting in daily production. Therefore, the trimming amount of 3 ~ 6mm is added to the edge of semi-finished edge gauge and front gauge paper to prevent bulge on the edge of non printing edge paper after framing.

In order to effectively prevent the regular paper edge bulge on the non printing surface, the paper edge can also be appropriately shrunk inward by a few millimeters, and then make paper paste, which can also ensure the die-cutting accuracy.

Cause of machine damage.

Before starting the machine, carefully check the machine and pay attention to the daily maintenance of some machines. Once any bad problems are found, they should be handled immediately.

As some parts of the die-cutting machine will be worn and loose, once you don't pay attention, it will lead to inaccurate positioning of semi-finished products.

Please note that the paper is in the wrong direction.

On the cardboard of the gift box, there is a crisscross direction, which is composed of several small sections. If you don't pay attention, it is easy to change the font. If the horizontal wire paper prints in the direction of multiple sections, there will be inaccurate die-cutting.

Therefore, in the actual production, the printing mode should be selected according to the actual situation. For example, for the layout with multi layout structure, the paper strand should be printed longitudinally in order to better ensure the die-cutting accuracy.