Causes of rough edges in die cutting of the most p

Causes of cigarette label die cutting burrs

at this stage, cigarette label printing in China is booming. In terms of the accuracy and grade of its equipment and cigarette packaging products, it can almost be said that it has become the highest level in the domestic packaging and printing industry. Therefore, as the first impression, the appearance of the computer system of cigarette label products through the controller should not be flawed. This paper aims at the common die cutting burr problems in the production process of cigarette labels, and talks about some experiences and experiences to facilitate the collation and editing of data

1 causes of die-cutting burrs

in the process of cigarette label die-cutting, due to various reasons, filiform, powdery or serrated paper scraps, color ink powder or white spots are generated at the cut of the steel knife on the cigarette label, which is usually called die-cutting burrs in the industry. The main reasons for producing die-cutting burrs are as follows:

1) improper selection of die-cutting steel knife or what we usually call plastic long-term use temperature, the quality of the steel knife itself has defects, and the blade edge has curling defects, resulting in obvious burrs on the edge of die-cutting products

2) the overall pressure is adjusted too high during plate loading, and the steel knife edge is crushed

3) after local tool change, there was no local decompression, resulting in overpressure of the new tool and damage to the blade

4) due to the particularity of cigarette label products, long-term mass production is required, and the steel knife will be naturally worn to varying degrees during the manufacturing process. At this time, the product is barely broken rather than cut through by the blade, which is easy to produce burrs

5) the pressure is not enough, and the paper is not cut through, but torn when removing the edge of the waste paper

6) after long-term use, the steel plate at the bottom of the moving platform produces a knife groove, and the rough knife groove is very easy to seriously damage the steel knife, thereby causing burrs

7) the hardness and height of the adhesive strip on the knife side are inappropriate or the pasting distance is unreasonable. If the hardness is too low, the height is not enough or the paste is too far, the paper cannot be pressed effectively; The main business income of Shandong new materials is expected to reach 350billion yuan. If the height is too high or the pasting distance is too close, the paper will be forcibly pulled and broken by the adhesive strip before the knife is completely cut, which will cause burrs

8) when the distance between the knife on the die and the steel wire is too small, the paper will form a pull between the adhesive strip and the indentation bottom film, which will also cause paper burrs

9) the die cutting adaptability of the paper itself will also lead to the appearance of burrs to a certain extent. For example, the gold and silver composite paperboard is prone to filiform burrs, while the white card glass paperboard is prone to powdery burrs; The paper with shorter fiber is low-cost but prone to burrs, while the paper with longer fiber is relatively rare, but the cost is higher

10) at present, most of the base molds of the flat pressing die-cutting plate use 18mm thick multilayer composite plywood. Theoretically, the texture, uniformity and deformation resistance of the wood will also indirectly cause the burr phenomenon through the influence of the angle of the die-cutting steel knife when cutting