How does POF film ensure food freshness and safety and environmental protection of packaging?

In the packaging field of the food industry, POF film (multi-layer co-extruded polyolefin heat shrink film) has become an important material for ensuring food freshness and safety and achieving environmental protection of packaging with its unique performance advantages. Its excellent overall performance is due to its special structural design, material properties and environmental performance, providing reliable solutions for food packaging from multiple dimensions.

POF film is made of multi-layer co-extrusion technology, usually with linear low-density polyethylene as the middle layer and co-polypropylene as the inner and outer layers. This structure gives it good flexibility, mechanical strength and heat shrinkage performance. In the process of food packaging, its heat shrinkage characteristics can fit the shape of food tightly, forming a stable and firm packaging, effectively preventing external physical impact, and avoiding damage to food due to collision and extrusion during transportation and storage. Whether it is fresh fruits and vegetables, pre-prepared meals, or canned beverages, POF film can provide solid protection to ensure the integrity of the food appearance.

POF film has good barrier properties to gases such as oxygen and water vapor. For fresh fruits and vegetables, moderate barrier properties can not only limit the entry of oxygen, slow down the respiration and oxidation process of fruits and vegetables, and extend the shelf life; but also allow a certain amount of gas exchange to prevent the excessive carbon dioxide and water vapor produced by the respiration of fruits and vegetables in the package from rotting and deteriorating. In frozen food packaging, its excellent water vapor barrier performance can effectively avoid the "freeze-drying" phenomenon, prevent the surface of frozen food from drying and cracking due to water sublimation, and maintain the taste and quality of the food.

POF film has excellent chemical stability. During contact with food, it will not release harmful chemicals or react chemically with food, ensuring the safety and hygiene of food. The environmentally friendly additives used in its production process, such as lubricants, anti-adhesive agents, antistatic agents, etc., will also not cause pollution to food. In addition, the film complies with the standards of the US FDA and USDA and can be directly used in various food packaging, eliminating the hidden dangers of food packaging safety from the source and providing reliable protection for the health of consumers.

In terms of environmental protection, POF film also performs outstandingly. After use, POF film has good recyclability and can be recycled into new plastic products by entering the recycling system, reducing the pressure of plastic waste on the environment. Compared with some food packaging materials that are difficult to degrade or cannot be recycled, POF film can be recycled after its life cycle, reducing the pollution of packaging waste to the soil, water and other ecological environments, which is in line with the current trend of the global food industry to pursue green and sustainable development.

In addition, the production process of POF film also reflects environmental advantages. The double-bubble process adopted effectively solves the problem of poor tensile properties of PP melt state. While ensuring product quality, no toxic gases and odors are generated during the production process, and the energy consumption is relatively low, further reducing its impact on the environment. This not only helps food production companies reduce the environmental cost of the production process, but also meets consumers' expectations for environmentally friendly packaging products.

From the preservation of fresh fruits and vegetables, to the quality maintenance of frozen foods, to the safety protection of pre-prepared meals and canned beverages, POF film, with its unique structural properties, safe and stable material properties and outstanding environmental advantages, comprehensively guarantees the freshness and safety of food, while achieving green environmental protection in the packaging process. As the food industry continues to pursue high quality and sustainable development, POF film has become a trustworthy choice in the field of food packaging due to its outstanding performance, and has also provided strong support for the green development of the food industry.