PVDC (polyvinylidene chloride) coated matte BOPP (biaxially oriented polypropylene) film is a packaging material that combines high performance with aesthetics. One of its most striking features is its excellent moisture and gas barrier performance. This feature is mainly due to the close arrangement of PVDC molecular chains, which can effectively block the penetration of small molecules such as moisture and oxygen.
The close arrangement of PVDC molecular chains is not accidental, but the result of careful design and optimization. In the production process of PVDC, by precisely controlling the conditions of the polymerization reaction, such as temperature, pressure, catalyst type and concentration, the PVDC molecular chain can form a tight and orderly structure during the formation process. This structure makes the PVDC coating have extremely low permeability, which can effectively block small molecules such as moisture and oxygen from the outside from entering the packaging, thereby protecting food from the influence of the external environment.
For food packaging, moisture and gas barrier performance is one of the important criteria for evaluating the quality of packaging materials. During the storage process, food often deteriorates due to oxidation, moisture and other reasons, resulting in a decrease in taste, flavor and nutritional value. The moisture and gas barrier properties of PVDC coated matte BOPP film are the key to solving this problem.
The moisture barrier properties of PVDC coated matte BOPP film can significantly reduce the risk of food deterioration due to moisture. In a humid environment, food can easily absorb moisture from the air, causing accelerated deterioration. The PVDC coating can effectively block the penetration of external moisture and maintain a dry environment inside the food, thereby extending the shelf life of the food.
The gas barrier properties of PVDC coated matte BOPP film can significantly reduce the risk of food deterioration due to oxidation. Oxygen is one of the main causes of food oxidation, which accelerates the corruption process of food and causes food deterioration. The PVDC coating can effectively block the penetration of oxygen and slow down the oxidation rate of food, thereby maintaining the freshness and nutritional value of food.
The moisture and gas barrier properties of PVDC coated matte BOPP film are not only theoretical, but have also been fully verified in practical applications. In the field of food packaging, PVDC-coated matte BOPP film is widely used in the packaging of various foods, such as meat products, dairy products, baked goods, dry products, etc.
Take meat products as an example. Meat products are easily affected by oxygen and moisture during storage and deteriorate. After packaging with PVDC-coated matte BOPP film, it can effectively block the penetration of oxygen and moisture, and maintain the freshness and taste of meat products. At the same time, PVDC-coated matte BOPP film also has excellent printing and heat sealing properties, which can meet the requirements of meat product packaging for aesthetics and sealing.
In the field of dairy products, PVDC-coated matte BOPP film also plays an important role. Dairy products have high requirements for the moisture and gas barrier properties of packaging materials, because once the packaging materials leak or are breathable, dairy products will deteriorate. The compact molecular chain structure of PVDC-coated matte BOPP film can effectively block the penetration of moisture and oxygen, and maintain the freshness and quality of dairy products.
In the packaging of baked goods and dry products, PVDC-coated matte BOPP film also shows excellent performance. Baked foods are susceptible to moisture and oxidation and deterioration during storage, while dry products are prone to moisture absorption and lose their original taste and flavor. The use of PVDC coated matte BOPP film for packaging can effectively solve these problems and extend the shelf life of the product.
With the continuous development of science and technology, the performance of PVDC coated matte BOPP film is also constantly improving. By improving the production process and formula design, the performance indicators such as moisture barrier, gas barrier and mechanical strength of PVDC coating can be further improved. The PVDC coating can also be functionally modified according to actual needs, such as adding antibacterial agents, antioxidants and other ingredients to enhance the antibacterial and antioxidant properties of packaging materials.
With the continuous improvement of environmental awareness, the environmental performance of PVDC coated matte BOPP film has also become a focus of attention. By adopting environmental protection measures such as degradable materials and reducing the use of solvents, the impact of PVDC coated matte BOPP film on the environment during production and use can be reduced. In the future, with the continuous improvement of environmental protection regulations and the increasing demand of consumers for environmentally friendly packaging, the environmental performance of PVDC coated matte BOPP film will become one of its important directions for development.
