Polyvinylidene chloride (PVDC) is a synthetic polymer known for its excellent barrier properties against gases and moisture. It is commonly used in packaging materials, especially for food products, to help preserve freshness and extend shelf life. PVDC can be found in films and coatings, making it a popular choice in the food industry. In addition to packaging, PVDC is also utilized in various applications such as coatings for metal and glass, and in the production of adhesives. Its resistance to chemicals and UV light further enhances its versatility, making it valuable in both industrial and consumer products.