PVC vs. PVDC in Blister Packaging: Understanding the Differences

Blister packaging is a popular form of packaging used in various industries, including pharmaceuticals, food, and electronics. It involves the use of a plastic shell or blister that is sealed to a backing card or foil. The blister is designed to protect the product from external factors such as moisture, light, and air. Two commonly used materials in blister packaging are PVC and PVDC. In this post, we will explore the differences between these two materials and their applications in blister packaging.

PVC (Polyvinyl Chloride) is a widely used thermoplastic polymer that is known for its versatility, durability, and low cost. It is a popular choice for blister packaging due to its excellent clarity, toughness, and resistance to moisture and chemicals. PVC is also easy to process and can be easily molded into different shapes and sizes. However, PVC is not suitable for products that require high barrier properties, such as oxygen and water vapor.

PVDC (Polyvinylidene Chloride) is a high-performance polymer that is used in blister packaging to provide excellent barrier properties. PVDC has a high resistance to moisture, oxygen, and other gases, making it an ideal choice for products that require extended shelf life. PVDC is also transparent, which allows for easy product visibility. However, PVDC is more expensive than PVC and requires specialized processing equipment.

In summary, the main difference between PVC and PVDC in blister packaging is their barrier properties. PVC is a cost-effective option for products that do not require high barrier properties, while PVDC is a premium option for products that require extended shelf life and high barrier properties. When choosing between PVC and PVDC, it is important to consider the specific requirements of your product and the intended use of the packaging.

In conclusion, understanding the differences between PVC and PVDC in blister packaging is crucial for selecting the right material for your product. PVC is a versatile and cost-effective option, while PVDC is a premium option that provides excellent barrier properties. By considering the specific requirements of your product, you can make an informed decision on which material to use for your blister packaging needs.