Polymer films have made such a powerful revolution in the food industry that until now, the first of them - cellophane - serve almost as a proper name for all that appeared later. Today, most food films are food grade PVC films, which are available in several varieties. First, it's the stretchy stretch film that each of us has seen in any grocery store.
It is used to cover products so that not even air remains between the film and the product. This makes the product look beautiful, and the packaging is saved, and the product lasts longer. Of course, such a film is used not only for food packaging, it also perfectly envelops industrial goods. Due to the high static charge that accumulates on such a film, it perfectly "sticks" to any object. Secondly, it is a shrinkable PVC film. Such a film is good because it first wraps a product or product in it, and then it is heated. In this case, the film is strongly compressed and tightly wraps around the products, for example.
The use of such a shrinkable PVC or PVC film (which is the same thing) complies with international requirements for the safety of food films, and its quality is confirmed by certificates of conformity and hygienic certificates.
This is not the only possible "shrinkage", so let's say about the third type of packaging.:
Polyolefin shrinkable PVC film. Its main difference from the previous version is its high puncture and tear resistance, which is about 25% different from its analogues. It also has a more reliable weld, and the aesthetic characteristics are as remarkable as those of any food-grade PVC film. Another significant difference is the absence of a specific odor when heated.
The fourth type can be called a polyproylene modification. This food grade PVC film is available in two main versions - BOPP or CAST, depending on the orientation of its molecule. Actually, BOPP is an oriented structure, it stretches easier, but breaks easier, and CAST is undirected. It is tougher, but smoother and more durable. In fact, it is polypropylene, which is used for wrapping machines. It is stronger "rustles", but has greater strength and is easily welded at the seam. At the same time, printed drawings can even be applied to the CAST film, and then recycled as recyclable materials. An additional advantage is the ability to withstand cooling to -40 °C. A legújabb nyerőgépek és az exkluzív promóciók eléréséhez a
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