In addition to the responsibilities of providing information and identifying products, labels are increasingly taking on special functions. Closing or sealing the package is definitely one of the most important roles. For example, more and more drugs require the use of tamper-resistant devices, possibly in the form of labels. Labels also play an important role in convenience food trends, including baked goods, sandwiches, sushi boxes, fruit cocktails, and more. They contain important variable information about ingredients, expiration date or weight. At the same time, they tightly seal the package. In all of these cases, labels usually need to be applied on one or more edges. For this reason, the technology is known not only as tamper-resistant or sealed labels, but also as over-corner labels or L, C, or U labels. This is done using special edge blanking equipment that is partially supported by a blower station, especially for large labels, since while sealed labels for pharmaceuticals tend to be small, they can be much longer when used on food. In the latter case, humid, cool conditions often increase the difficulty..