The heat shrinkable film generally includes PVC heat shrinkable film, pet heat shrinkable film, PETG heat shrinkable film and OPS heat shrinkable film. The chemical and physical properties will be different according to the different materials.
1. PVC film
PVC film is a widely used film material at present. Its price is extremely low, the temperature shrinkage range is large, and the requirement for heat source is not high. The main processing heat source is hot air, infrared or a combination of the two. However, PVC is difficult to recover and produces toxic gas during combustion, which is not conducive to environmental protection. It has been banned in Europe and Japan.
2. Ops membrane
As a substitute for PVC film, OPS film is being widely used. It has good shrinkage performance and is also conducive to environmental protection. The product is in short supply in the domestic market. High quality OPS membrane also mainly depends on import, which has become an important factor restricting its development.
3. PETG membrane
PETG copolymer film is not only conducive to environmental protection, but also can adjust the shrinkage in advance. However, due to the excessive shrinkage, it will also be limited in use.
4. PET film
PET film is an internationally recognized environmental friendly heat shrinkable film material. Its technical indexes, physical properties, application scope and application methods are close to PVC heat shrinkable film, but its price is cheaper than PETG film. It is an advanced unidirectional shrinkable film at present. Its transverse shrinkage rate reaches 70%, and its longitudinal shrinkage rate is less than 3%. It is non-toxic and pollution-free. It is an ideal material to replace PVC film.
Hangzhou Chaohong plastic packaging Co., Ltd., established in 1996, is a professional manufacturer of heat shrinkable film and winding film. It specializes in the production and processing of PVC heat shrinkable film, PE heat shrinkable film, POF heat shrinkable film, pet heat shrinkable film, PE winding film and other products. The company has a complete and scientific quality management system and has passed ISO9001 certification. The company's products are tested by SGS, which makes customers feel more assured. The integrity, strength and product quality of Hangzhou Chaohong plastic packaging Co., Ltd. have been recognized by the industry. Welcome friends from all walks of life to visit, guide and business negotiation.
