PB Shrink Bag is a 5-layer co-extruded film composed of PE and PVDC materials and scientifically formulated. PB Bags not only have high transparency, but also have outstanding oxygen barrier properties. Commonly used in Poultry Shrink Bag, Meat Shrink Bag, Cheese Bag, Vacuum Bag, etc.PVDC is an efficient oxygen barrier material. The heat shrinkable bag made of PVDC as an oxygen barrier layer can not only greatly extend the shelf life of food, but also reduce the loss of meat juices and the oxidation of vitamins. PVDC is a food grade material, and the PVDC shrink bag can be in direct contact with food. Tipack has complete technology and experience to provide high-quality PVDC oxygen barrier shrink bags for global users. feature: Safety grade: ISO9001, food grade material. Ability: block water vapor, block oxygen, high transparency, printable Customized: Acceptable Application: poultry, raw meat, lamb, ham, sausage, cheese, frozen meat