In modern society, there are diversified consumer groups and diversified consumer demands. For example, for patients with obsessive-compulsive disorder, the tear of commodities must be neat, otherwise they will explode in situ, especially for patients with super severe obsessive-compulsive disorder. Therefore, in order to better suit the user experience of consumers, more and more food, daily chemicals, cosmetics and other industries have designed easy to tear / easy to tear on commodity packaging. When we buy commodities in supermarkets, convenience stores and other retail places, we can find that:.
All flexible packaging films in the market are made of multi-layer films, with a thickness of about 10 microns. Each layer has different functions, such as high rigidity and good confidentiality of pet; PE has good heat sealing performance and strong tear resistance; PP has good water vapor barrier performance; Aluminum foil is often used for light blocking sealing; Paper usually protects the film well. And this also tested the layer cutting technology of the easy to tear line laser engraving machine.
Laser layered cutting
Laser layered cutting refers to selectively cutting a certain film layer without affecting other film functions. For example, micro cutting a high-strength film layer can form a structure that is easy to open, but because the cutting is small, it does not affect the appearance of the package. Although the mechanical scratch or mechanical punching method of plastic film is fast and relatively simple, neither can distinguish different film layers.
Flight tag cutting
The result of mechanical scratch or mechanical punching is:
1. If the scratch depth is too small, even the mechanical layer of the film is not completely cut;
2. If the scratch depth is too large, the light blocking layer and the water vapor blocking layer will be damaged. Therefore, people have been looking for a reliable processing technology to make the cutting more fine and selective. They can choose the plastic film layer, which is realized by laser cutting machine.