Lum Dong(Corrugated cardboard production line/Corrugated box making machine)

  1. Board Warping Problem Description: After leaving the corrugated cardboard production line , the board is not flat but curves upward, downward, or to one side. Cause Analysis: Uneven moisture content: This is the core cause. Different parts of the cardboard (face paper, liner paper, core paper) have inconsistent moisture levels, leading to varying drying shrinkage rates. Upward Warping: Typically caused by excessively high moisture content in the face paper or overly dry liner paper. The face paper has a higher shrinkage rate than the liner paper. Downward Warping: Opposite of upward warping, caused by excessively high moisture content in the liner paper or overly dry face paper. The liner paper has a higher shrinkage rate than the face paper. S-curve warping: Lateral warping usually caused by uneven cross-directional temperature on the production line or inherent paper defects. Inappropriate base paper combination: Significant disparities in physical properties (basis weight,...

How do you improve cardboard quality and productivity while reducing high manufacturing and operating costs? The answer does not necessarily lie in the pursuit of the “cheapest”, but in the pursuit of the “best”. The machine is the key to production efficiency. It is very important to choose the right production line with the right width and speed according to your production needs. Of course, there are also the number of workers needed for the equipment, as well as unnecessary wear and tear due to technical problems, so choosing the right corrugated manufacturer and negotiating directly with the factory is the real key. The introduction of a production line is not a simple purchase, but the subsequent process covers a number of key aspects such as installation, commissioning and test run. In this process, whether the equipment frequently breaks down, or the quality of the cardboard is not up to standard due to the machine's own problems, which leads to a lot of additional time a...