The heat shrinkable film supported by environmental protection is favored by consumers

The main raw materials of heat shrinkable film three-layer co-extruded heat shrinkable packaging film include LLDPE (linear low-density polyethylene), TPP (ternary copolymer polypropylene), PPC (binary copolymer polypropylene) and necessary functional additives such as Shuang Slip agent, anti-blocking agent, antistatic agent, etc. These raw materials are environmentally friendly and non-toxic materials, no toxic gas or odor will be generated during processing and product application. The product's hygienic performance meets the US FDA and USDA standards and can be used for packaging food. POF heat shrinkable film is currently the most widely used and most environmentally friendly packaging film on the market. It is favored by manufacturers and consumers. It opened up the first wave of green packaging in my country. POF heat shrinkable film is gradually replacing PE and PVC equivalent types. Packaging film, occupy the leading position in the packaging film market. The production process of POF heat shrinkable film is non-toxic and consumes less raw materials per unit area. It is an environmentally friendly packaging film with the most development potential and the most market prospects. 1. Cost POF proportion is 0.92, thickness is 0.012mm, the actual unit cost is lower. PE proportion is 0.92, thickness is more than 0.03, actual unit cost is higher. PVC proportion is 1.4, thickness is 0.02mm, the actual unit cost is higher 2. Physical properties POF is thin and tough, uniform thickness, good moisture resistance, soft texture. High tensile strength, high tear resistance, and adjustable shrinkage. Because of the existence of LLDPE, the rub resistance is better. PE is thick and tough, and the thickness is uniform , Good moisture resistance, soft texture. The tear resistance is lower than POF, but much higher than PVC, and the shrinkage rate is poor. The rub resistance is not as good as POF. PVC is thick and brittle, with uneven thickness, poor moisture resistance, and hard and brittle texture. Low strength, low shrinkage, poor rub resistance. 3. Cold resistance and other physical properties POF has excellent cold resistance, -50°C is not hard, not brittle, and not easy to break, and can be used for frozen food packaging. After shrink packaging, the heat shrinkable film adheres to sustainable development Roads, actively advocating energy conservation, emission reduction, and low-carbon life are currently China’s important strategies to alleviate severe pollution. Nowadays, low-carbon life has become a household word. The concept of energy conservation and emission reduction has been deeply rooted in the development of various industries in our country. For example, in China’s packaging industry, green packaging has swept the entire packaging market. Environmentally friendly packaging films represented by POF heat shrinkable films have set off a wave of green packaging. Combining environmental protection and packaging concepts, POF heat shrinkable films not only reflect modern packaging. The concept, but also fully embodies its green and environmental protection characteristics, conforms to the mainstream of the development of an energy-saving society, and has development significance for the times. The widespread use of POF heat shrinkable film in the Chinese packaging market fully reflects China’s emphasis on environmental protection, and also reflects the improvement of modern people’s environmental awareness and overall quality. POF heat shrinkable film is a functional and environmentally friendly The combined plastic packaging film has superior airtightness, high transparency and gloss, strong tear resistance, and excellent cold resistance. The most prominent feature is its environmental protection performance, which is unmatched by the same type of film. POF heat Shrink film is widely used in the packaging of food and beverage, frozen food, daily chemical products, medical supplies, electronic products and other industries. Production process The three-layer co-extruded heat shrinkable packaging film is made of linear low-density polyethylene (LLDPE) and copolymer polypropylene (TPP, PPC) as the main raw materials, adding necessary additives, and processed by co-extrusion blow molding. The process is different from the traditional blow molding process. Due to the poor tensile properties of the PP melt state, the traditional blow molding process cannot be used. Instead, the double bubble process is used, which is also known as the Pulandi process in the world. Different extruders are melted and extruded, through a specially designed co-extrusion die head, the primary film is formed and then quenched, and then heated for secondary inflation and stretching to obtain products. For more related knowledge, please click: