1. The types of face materials can be basically divided into two major categories: paper and film.
The cutting matter of the paper-like paper is slightly different from the film material. Although in theory, PE protection film manufacturers must cut through the face material and the adhesive together, the theoretical die-cut paper material is the combined result of tool cutting and paper breaking, that is, the cutting edge is cut downward. The paper is also pressed to both sides, so that the die-cutting precision of the paper-like material is not very high. When analyzing samples, it is often seen that some labels have burrs, which is due to the fact that the material fibers are coarse and naturally fractured.
Based on the die-cutting characteristics of paper-based materials, and considering the wear of the blade, the angle of the flat-film cutting blade of the PE protection film manufacturer is 52°. The assumed angle is large, and the extrusion deformation of the material is large, that is, the horizontal tendency The discriminating power will make the material breakage distinction.
Die-cutting of film-based materials, PE protection film manufacturers simply say the process of complete cutting. Because most of the film materials have toughness and do not break naturally, it is not suitable to cut through two-thirds. It is necessary to completely cut through or cut through four-fifths of the thickness, otherwise it will be peeled off together with the label.
2, PE protection film manufacturers face strength of the strength of the surface material is related to the thickness of the face material, fiber (polymer) structure and its own humidity. In the die-cutting process of PET protection film materials, the most important factor associated with the facestock is the speed of discharge. The greater the humidity of the condition, the weaker the strength of the PE protection film manufacturer's material after being damp, and then it can be pulled off at random or even discharged.
When designing the layout, depending on the strength of the material, it is not only possible to increase the production efficiency but also to increase the material throwing by performing the discharge size and the waste discharge speed of the reasonably inserted label.
3, the thickness of the face material The thickness of the material directly affects the depth of the die-cutting. The thicker the material, the more die-cut. Because the thicker the material, the greater the tolerance of die cutting, the less likely it is to cut through the liner. Relatively speaking, the material is thin and there is a defect of cutting through the bottom paper at will. For example, the same surface material as 80g/m2 and 60g/m2 is cut on the uniform flattening labeling die-cutting machine. The results show that the 80g/m2 material die-cutting is normal, and the material is replaced by 60g/m2. When die-cutting, the waste-cracking, bottom-paper cut-through and loss-of-standard phenomenon often occur, and the demand often stops, and the pad is cut. Throw a lot. There are many kinds of notices for this kind of situation. It is assumed that the use of circular die-cutting methods or reduction of die-cutting area, PE protection film manufacturers use high-precision equipment, etc., this phenomenon can be added or avoided.www.snpefilm.com