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What is the role of heat shrinkable film labels?

Heat shrinkable film label is a kind of film label printed on plastic film or plastic tube with special ink. During the labeling process, when heated (about 70℃), the shrinkable label will quickly follow the outer contour of the container Shrink, close to the surface of the container, heat shrinkable film labels mainly include shrink sleeve labels and shrink wrap labels.

Shrink sleeve label is a cylindrical label made of heat-shrinkable film as the base material after printing. It is easy to use and is very suitable for special-shaped containers. Shrink sleeve labels generally require special labeling equipment to cover the printed sleeve on the container. First, the labeling equipment opens the sealed cylindrical sleeve label, which may sometimes need to be punched; then, the sleeve label is cut into an appropriate size and sleeved on the container; then heat treatment is performed using steam, infrared or hot air channels , Make the sleeve label tightly attached to the surface of the container.

Due to the high transparency of the film itself, the label has bright color and good gloss. However, because it must be shrunk during use, there is a disadvantage of pattern deformation, especially for products with printed barcodes. Must go through strict design and printing quality control, otherwise the bar code quality will be unqualified after the pattern is deformed. Shrink wrap labels can be labeled with traditional labeling equipment, which requires the use of adhesives and higher temperatures during the labeling process. In the shrinking process, since the adhesive at the overlapping part of the film will produce stress, hot melt adhesive is better.