The relationship between POF shrink film and shrink packaging machine

What is the relationship between POF shrink film and shrink packaging machine? POF shrink film packaging machine is a highly automated equipment. This product is widely used in daily necessities, food and beverages and household chemicals. The application of heat shrink film packaging machine can greatly reduce the material and labor costs of using medium box packaging. Economic significance. The packaging machine is currently the latest type of shrink packaging equipment in China. It can enable enterprise products to enter the market better and faster, and bring high benefits and high returns to individuals or enterprises. POF heat-shrinkable film is designed with the principle of stretching and orientation of polymer molecular chains, and formed by the method of quenching and setting. The physical principle is: when the polymer is in a highly elastic state, it stretches the orientation, and then the polymer is quenched to below the glass transition temperature, the molecular orientation is frozen, and when the article is heated during packaging , Due to the stress relaxation caused by the thermal movement of the molecules, the points are restored to the original state and contraction occurs. At present, the common heat shrinkable films on the market include PE shrinkable film, PVC shrinkable film, PP heat shrinkable film, POF co-extruded shrink film, etc. In the big family of heat shrinkable packaging film, POF three-layer co-extruded heat shrinkable film (POF— C3) is a new generation product that has gradually emerged in recent years and has been accepted by people. POF-C3 heat shrinkable packaging film is a multi-layer environmentally friendly non-toxic heat shrinkable packaging material produced by co-extrusion blow molding process with PE and PP as the main raw materials. Originated in Italy in the early 1990s, the main features of this product are: 1. High transparency and good gloss. 2. Good flexibility and easy to use. 3. Large shrinkage rate, the highest shrinkage rate can reach 75%. 4. Good welding performance, high strength, suitable for manual, semi-automatic and high-speed automatic packaging. 5. Good cold resistance, can maintain flexibility at -50 ℃ without brittleness, suitable for storage and transportation of the packaged materials in a cold environment. 6. Environmental protection and non-toxic. The main raw materials of POF-C3 heat shrinkable packaging film include LLDPE (linear low-density polyethylene), TPP (ternary copolymer polypropylene), PPC (binary copolymer polypropylene) and necessary functional additives such as slip agent, anti- Adhesives, antistatic agents, etc. are non-toxic materials. It meets US FDA standards and can package food. 7. Moisture-proof and dust-proof. 8. The packaging cost is low, which is better than the packaging of cartons and other materials. ?? In recent years, domestic production equipment and raw materials have been introduced, and more than 10 production lines have been put into operation. However, the domestic application of POF-C3 series heat shrinkable packaging film is still in its infancy, with a narrow application range, with an annual demand of about 25,000 to 30,000 tons. However, it has potential for development in the fields of cultural and educational supplies, electrical appliances, medicine, and food. In addition to being directly used for packaging, POF heat shrinkable film can also be used for printing after corona treatment. The heat-shrinkable film industry mainly includes PE, POF, PVDC and PVC heat-shrinkable films, and the PE heat-shrinkable film market is the first. POF is mainly used in the outer packaging of various food, beverage, daily necessities, cosmetics, communication equipment and other products. There is a big gap between the performance and application fields of PE and PVDC heat shrinkable film, and it does not form a direct competitive relationship.