What are the small problems that are easy to encounter during the printing and packaging process of color boxes?

Color box printing packaging may seem simple, but there needs to be a very strict control over size and color to ensure that customers receive satisfactory packaging products.

In response to several common errors in color box printing and packaging, Shenzhen color box printing and packaging manufacturers have made the following summary:


Problem 1: The size is incorrect and there is displacement phenomenon;The size problem is usually caused by deviation in the position of the slotting knife or small displacement of the machine during operation. It is also possible that the irregular or bent paper may cause deviations in the size of the rear packaging box.

Solution: You can adjust the position of the slotting knife for sampling and debugging. If it is caused by paper bending, the paper can be flattened. Generally, the paper warehouse needs to ensure a certain humidity, which is more conducive to paper storage. In environments with significant humidity, the parts that come into contact with air will absorb water, while the parts that do not come into contact with air will bend due to moisture evaporation.



Question 2: The printing font is blurry Generally, the printing font is blurry, mainly due to the excessive density and high viscosity of the ink, resulting in uneven ink throwing and forming a continuous ink effect. It is also possible that the ink is too thick and not dry, causing ink to overlap on the paper.
Solution: When mixing ink, pay attention to the viscosity of the ink, and of course, also pay attention to the pressure relationship between the printing cylinder and the pressure roller. Anyway, pay attention to some details for debugging.

Problem 3: Paper creasing and bursting;Some papers may crack due to uneven force or pressure exceeding their limits.
Solution: Pay attention to ensuring the humidity relationship of the paper. Paper that is too dry has weak toughness and is prone to cracking, and the pressure on the paper should not be too high. Before purchasing paper, pay attention to testing the paper's tensile strength.