Precautions for Concave Convex Die-cutting

1. Check whether the paper is cut neatly (because the position of the offset press gauge is different from the height of the beer press, the paper tilt will cause the left and right positions to move).

2. Pay attention to the expansion rate of the paper (the paper will be elongated or shortened due to different humidity and temperature, and the paper length will change if it can be offset printed at high temperature).

3. Check the stability of the needle position (offset printing is prone to needle skipping).

4. Check the accuracy of concave convex plate installation.

5. Weight of pulling gauge.

6. Pay attention to the stability of belt paper feeding.

In order to make the bump more three-dimensional, pressure is very important. After the application of the relief version process, its impact effect is much higher than that of the ordinary concave convex version, which is full and well arranged.

The protruded product needs die cutting, which is to cut the paper at the specified position with a knife die. It is a main process of printing product packaging. However, how to make our products easier for customers to pack depends on the depth of the indentation line. For different products, we choose the bottom line of different specifications in strict accordance with the relevant regulations. In order to prevent the directly exposed paper edge from bursting, we pay special attention to the sharpness of the knife, the flatness of the bottom plate and the moderate pressure, so that the broken place is not broken.

In order to ensure product quality and production progress, through technical innovation, we carry out bumping and die-cutting at the same time, and put two different processes together to complete them. Although the difficulty increases, we strive to overcome the difficulties, and pay attention to selecting products with less and more stable bumping positions. Products with large beer positions adopt this technology, while products with large position fluctuations still adopt multiple bumping.