High barrier film is a material that plays an important role in food packaging. Among them, the seven-layer co-extrusion film is a special high-barrier film with many advantages. This article introduces the advantages of seven-layer coextrusion film and its role in food packaging.

The seven-layer coextruded film has high barrier properties and is formed by co-extrusion of multiple layers of different materials, each layer having a specific function. This design can effectively block the invasion of oxygen, water vapor, light and other external factors, and maintain the freshness and quality of food. The high barrier properties of the seven-layer co-extruded film enable the packaged food to be preserved for a longer period of time, extending the shelf life of the food.

The seven-layer coextruded film also has good heat resistance and cold resistance. In the process of food packaging, food needs to be handled and stored at different temperatures. The seven-layer co-extruded film can withstand high and low temperature environments to protect the stability and safety of food. Whether in the high temperature environment during cooking or in the low temperature environment during frozen storage, the seven-layer co-extruded film can play a reliable protective role.

The seven-layer coextruded film also has good mechanical properties. It has enough flexibility to adapt to different shapes of packaging, and has enough strength to protect food from external pressure damage. The mechanical properties of the seven-layer co-extruded film make food packaging safer and more reliable, reducing the risk of packaging damage and food deterioration.

In food packaging, the role of the seven-layer co-extrusion film is not only to protect the food, but also to enhance the market competitiveness of the product. Packaging can attract the attention of consumers and increase the sales of products. The seven-layer coextruded film has good transparency and gloss, which can make the packaged food more attractive. In addition, the seven-layer co-extruded film can also achieve a variety of packaging forms, such as bags, boxes, etc., to meet the needs of different consumers.

In summary, the seven-layer coextruded film, as a high-barrier film, plays an important role in food packaging. It has high barrier properties, good heat resistance and cold resistance, and excellent mechanical properties. The seven-layer co-extrusion film not only protects the food and extends the shelf life, but also enhances the market competitiveness of the product.