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Die-cutting common problems and solutionsExpand
Cause of the problem
In die-cutting, often appear die-cutting products cutting edge is not smooth, hairy phenomenon, especially from the indentation line closer to some of the cutting edge at the situation is more serious. This is due to the die cutting pressure, die-cutting plate on the adhesive strip, creasing steel line on the paper to produce tension, the paper is not completely cut through when the tension generated by the pull off, the emergence of hairy edges.
cure
First of all, according to the paper selection of different types of die cutting knife. Die cutting knife, including straight knife and cross grain knife, two patterns of the blade and have a short and tall points, the formation of the blade pattern and short and tall different, directly related to the quality of die-cutting and die-cutting knife service life. In terms of avoiding die-cutting linting, straight grain knife is better than cross grain knife; in terms of service life, short blade knife is better than high blade knife. In die-cutting laminated cardboard, should be selected with straight high-front knife, and the requirements of the knife blade is ground, it is best not to use the pressure of convex molding process, otherwise the pressure will be too large on the die-cutting have a great impact; in the processing of ordinary cardboard is recommended to choose a short-front knife, and according to the quality of paper fibers to determine the grain of the knife blade.
Poor fiber or thicker paper should be used straight knife, fiber quality of the paper can be used across the knife, in order to improve the service life of the die-cutting knife.
Secondly, can also be closer to the indentation line of the die-cutting knife pasted 60 ° of the arch of the adhesive strip, reduce the die cutting pressure when the indentation line here on the paper produced by the tension. Such as die-cutting ration of 300g/m2 of paper is usually selected 0.4mm × 1.3mm, 23.4mm high creasing steel line, such as this failure can be changed to 0.4mm × 1.2mm, 23.3mm high pointed creasing steel line, in this way, reducing the die-cutting pressure on the paper tension, die-cutting hairy problem can be basically solved.
