Corrugated cardboard die cutting is the use of die-cutting plates to perform fixed shape cutting and corresponding position indentation on paper or cardboard under a certain pressure. During the die-cutting process, it is necessary to ensure that the cut position of the paper or board is cut accurately, cut, smooth, and free from burrs, and the indentation at the creasing position is also accurate and clear. During the die-cutting process, failures such as die-cutting, bursting, and fuzzing may occur. The reasons for this are almost always related to the environment humidity, die-cutting pressure, die-cutting plate, paper or cardboard materials, and so on. The reasons for the failure of the edges of corrugated cardboard caused by the above factors are analyzed as follows.
First, the quality of the steel knife is poor or the cutting edge is not sharp enough. The quality of the steel knife itself is poor, die-cutting adaptability is poor, or the steel blade wears out after a long time of use, and is not replaced in time. These may cause the corrugated cardboard to be During the cutting process, it cannot be completely cut off. At this time, if flaking occurs, fluffing will occur.
Second, the environment has low humidity, and the board has a low moisture content. Hefei is located in the north-central part of Anhui Province and the environmental humidity is about 40%. During the long-term storage of the corrugated board, when the external environment humidity is lower than the water content of the corrugated board itself Dewetting occurs, which causes the water content of the corrugated cardboard itself to decrease, which in turn makes it brittle. If die-cutting is performed at this time, when the die-cutting steel knife comes into contact with the corrugated cardboard, the corrugated cardboard is prone to edge chipping. Causes fluff to occur.
Third, the improper choice of die-cut spring pad die-cut spring pad, as the name suggests, that is, in the die-cutting process, die-cutting steel knife after cutting corrugated cardboard, using elasticity to kick out corrugated cardboard to prevent die-cutting steel knife when cutting Stick corrugated cardboard, so as to ensure smooth paperboard corrugated cardboard during the cutting process.
Fourth, the die-cutting pressure During the die-cutting process, corrugated paperboard needs to have a proper die-cutting pressure to form a smooth edge and a clear indentation. The die-cutting pressure is divided into the overall pressure and the partial pressure. The fluffing of the corrugated paperboard edge can be mostly With respect to partial pressure, when setting and adjusting the die cutting pressure, appropriately increasing the overall pressure or locally compensating the steel knife can ensure that the steel knife completely cuts the corrugated cardboard, thereby effectively avoiding the occurrence of fluffing.
In addition, the function of the die-cut spring washer is to press the corrugated cardboard when the die-cutting steel knife is about to be cut, so as to ensure that the corrugated paperboard of the paper box is smoothly cut, and if the corrugated cardboard is fixed badly, it will also cause damage. Fleeting phenomenon.
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