The faster the machine runs, the greater the acceleration and tensile force when pulled out from the stationary molding position. More connection points are needed on the printing sheet to prevent breakage, and the opening needs to be more, deeper, and wider. The small opening is mainly in the direction of paper movement, and the left and right sides can be left or left slightly open. The small mouth should be opened as much as possible on the finished box where it can be glued or folded inside. If there are discontinuous small holes on the paper, it is necessary to make a small hole on the die cutting blade in the direction of paper feeding on the die cutting plate to prevent the waste paper in the small hole from falling onto the steel plate and being dragged into the indentation line, causing the product to break at the creased area. If the paper is thin and has a higher strength, it is advisable to have fewer, shallower, or narrower openings; If the paper has high expectations and poor strength, the opening should be wider, deeper, and wider. If the edge of the finished box is flat, the opening should be more, deeper, and wider. If the edge of the finished box is hooked, the opening can be less, shallower, or narrower because the paper edge and the finished product will hook each other.