Types of heat shrinkable label film

Types of heat shrinkable label film Release time: 2020-11-23 The main materials used to make shrink film sleeve labels are PVC (polyvinyl chloride) film, PET (polyester) film, PETG (modified polyester) film, OPS (orientation) Polystyrene) film, its properties are as follows: 　　1, PVC film PVC film is currently the most widely used film material. Its price is extremely low, the temperature shrinkage range is large, and the requirements for the heat source are not high. The main processing heat source is hot air, infrared rays or a combination of the two. However, PVC is difficult to recycle and produces toxic gas when burned, which is not conducive to environmental protection. Its use has been prohibited in Europe and Japan.　　2. As a substitute for PVC film, OPS film is being used more and more widely. It has good shrinkage performance and is also conducive to environmental protection. Now the product is in short supply in the domestic market. At present, high-quality OPS membranes are still mainly dependent on imports, which has become an important factor restricting their development.　　3, PETG film PETG copolymer film is not only good for environmental protection, but also can adjust the shrinkage rate in advance. However, due to the excessive shrinkage, it will be limited in use. 4. PET film PET film is an internationally recognized environmentally friendly heat shrinkable film material. Its technical indicators, physical properties, application range and use methods are close to PVC heat shrinkable film, but the price is cheaper than PETG film and is currently the most advanced Unidirectional shrink film has a transverse shrinkage rate of 70% and a longitudinal shrinkage rate of less than 3%. It is non-toxic and non-polluting. It is the most ideal material to replace PVC film. Previous: Bottle shape and shrinking process