What is the difference between PVC and PVDC blister packs?

Introduction

The pharmaceutical and consumer goods industries often rely on blister packs for packaging due to their ability to create a protective barrier and maintain product integrity. Among the most common materials used for blister packs are PVC (Polyvinyl Chloride) and PVDC (Polyvinylidene Chloride). Understanding the differences between these two materials is critical for selecting the appropriate type of packaging for specific applications.

PVC Blister Packs

PVC blister packs are widely used due to their cost-effectiveness and ease of manufacturing. PVC's chemical structure provides adequate protection against moisture and oxygen for many pharmaceutical and consumer products. Key parameters include:

• Water Vapor Transmission Rate: Approximately 3.0-3.5 g/m²/day
• Oxygen Transmission Rate: Around 15-20 cc/m²/day
• Thermal Stability: Up to 60°C
• Cost: Low

PVDC Blister Packs

PVDC-coated blister packs are known for their superior barrier properties compared to PVC. The additional coating enhances the pack's resistance against moisture and gas permeation, making it suitable for more sensitive products. Key parameters include:

• Water Vapor Transmission Rate: Approximately 0.1-0.2 g/m²/day
• Oxygen Transmission Rate: Around 1-5 cc/m²/day
• Thermal Stability: Up to 60-70°C
• Cost: Moderate to high

Comparison of PVC and PVDC Blister Packs

The choice between PVC and PVDC blister packs often depends on the sensitivity of the product and the required shelf life. Key differences are:

• Barrier Properties: PVDC offers significantly better barrier properties against both moisture and gases compared to PVC.
• Cost: PVC is generally cheaper, making it suitable for less sensitive products.
• Environmental Impact: PVC is less environmentally friendly due to chlorine content and potential release of harmful dioxins during manufacturing.
• Application: PVC is suitable for products with a shorter shelf life, while PVDC is preferred for highly sensitive products requiring long-term stability.

Anersin Company Solutions

Anersin Company specializes in providing tailored packaging solutions, offering both PVC and PVDC blister packs. Their offerings include:

• Customizable PVC and PVDC blister packs that meet specific client needs.
• State-of-the-art technology ensuring high barrier properties and durability.
• Consultation services to help clients choose the most appropriate packaging material based on product sensitivity and shelf life requirements.

Anersin's innovative solutions ensure product integrity while optimizing cost-effective production processes.

References

Below are some of the references consulted for this article:

• Smith, J. A., & Brown, L. P. (2022). Advanced Packaging Materials. New York: Academic Press.
• Jones, M. (2021). The Science and Technology of Pharmaceutical Packaging. Boston: PharmaTech Publishing.
• Environmental impacts of PVC: A review. Journal of Environmental Studies, 45(3), 234-250.