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Specializing in the production of pet transparent protective film, transparent pet protective film, quality assurance and affordable

by:YoukingTech     2021-11-11
1. Types of surface materials Surface materials can basically be divided into two categories: paper and film. It is simple that the cutting affair of paper is slightly different from that of film materials. Although theoretically, PET protective film manufacturers must cut through the face material and adhesive together when die-cutting, but theoretically die-cutting paper materials is the combined result of tool cutting and paper fracture, that is, the cutting edge is cutting downwards. The paper is also squeezed to both sides, so, relatively speaking, the die-cutting accuracy of paper-like materials is not very high. When analyzing samples, we often see that some labels have burrs. This is due to the fact that the material fibers are relatively thick and naturally fractured. Based on the die-cutting characteristics of paper materials, and considering the wear of the blade, the angle of the flat die-cutting blade of the PET protective film manufacturer is 52°. Assuming that the angle is large, the extrusion deformation of the material will be large, that is, the horizontal tendency. The distinguishing power of the material will aggravate the phenomenon of material fracture. For die cutting of film materials, PET protective film manufacturers simply cut through. Because most of the film materials are tough and will not break naturally, it is not appropriate to cut through two-thirds of the thickness. It must be completely cut through or through four-fifths of the thickness, otherwise it will be peeled off along with the label when it is discharged. 2. The strength of the face material of the PET protective film manufacturer The strength of the face material is related to the thickness of the face material, the fiber (polymer) structure and its own humidity. In the die-cutting process of PET protective film materials, the most important factor related to the surface material is the waste discharge speed. The higher the humidity, the weaker the strength of the PET protective film manufacturer's material after being damp, and then it can be pulled off at will, and it is even impossible to discharge waste. When designing the layout, according to the strength of the material, through the implementation of the reasonable size and speed of the waste discharge of the label, how not only can the production efficiency be improved, but also the waste of the material can be increased. 3. The thickness of the surface material The thickness of the material directly affects the depth of die-cutting. The thicker the material, the more random die-cutting. Because the thicker the material, the greater the die-cutting tolerance, the smaller the chance of cutting through the bottom paper. Relatively speaking, the material is thin, and the defect of cutting through the bottom paper randomly appears. For example, it can distinguish die-cutting 80g/m2 and 60g/m2 on a flat-bed label die-cutting machine with the same bottom paper. The results found that: 80g/m2 material die-cutting waste is normal, but when 60g/m2 material is replaced, waste discharge breakage, bottom paper cut through and loss of standard phenomenon often occur during die cutting. Throw a lot. There are many notices for this kind of situation. Assuming the use of circular die-cutting methods or reducing the die-cutting area, PET protective film manufacturers use high-precision equipment, etc., this phenomenon can be added or avoided. Therefore, when die-cutting thin surface materials, you must work with high-precision equipment to increase the die-cutting area as much as possible (especially for small labels). Pad accuracy.
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