Problems and solutions of die cutting machine

1. Die cutting and raising dust

Cause of the problem: In die cutting, often appear in the die cutting product edge is not clean, wool phenomenon, especially from the indentation line near some of the edge of the situation is more serious. This is because when the die is cut and pressed, the adhesive strips and indentation steel lines on the die plate produce tensile force on the paper, and the paper is not fully cut through when the tensile force is broken, there is a wool edge.

Solution: first, choose different types of die-cutting knives according to the paper. Die-cutting machine knife includes straight knife and horizontal knife, two kinds of grain knife blade has the difference of height, the knife blade formed the different grain and height, directly related to the quality of die-cutting and the life of die-cutting knife. The straight knife is better than the horizontal knife in avoiding the moulding and the short knife is better than the high knife in service life. In die-cutting film jamming, should choose a straight-grain high-edge knife, and requires that the blade is grinding, it is best not to use concave-convex molding process, otherwise too much pressure will have a great impact on die-cutting; and in the processing of ordinary jamming paper should choose a low-edge knife, and according to the quality of paper fiber to determine the grain of the blade. www.chinacartonmachine.com

2. The indentation of die cutting machine produces "detonating line" and "hidden line".

Cause of the problem: "burst line" refers to the pressure of die-cutting indentation is too large, exceeding the paper fiber endurance limit, so that the paper fiber fracture or partial fracture; "dark line" refers to the improper indentation line, generally due to die-cutting plate and indentation steel line selection is not appropriate, improper die-cutting pressure adjustment, poor paper quality, paper The fiber orientation is not consistent with the cutting plate layout direction, the paper moisture content is low, resulting in the decline in flexibility and other reasons.

Solution: Choose the right die-cutting plate; adjust the die-cutting pressure properly; put the printed matter to be die-cut in the workshop for a period of time before die-cutting; improve the relative humidity of the workshop environment. The better way is to reduce the height of the indentation steel wire, which is usually 0.1-0.2 mm. It should be determined according to the paper quantity. The height of the indentation steel wire should be reduced to 0.2 mm when the paper quantity is above 350 g/m2. The paper quantity below 350 g/m2 should be reduced to 0.1 mm.

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