Comparative analysis of the physical and chemical properties of new and expired blister pack foils for hard gelatin capsule packaging

摘要

Blister packs are commonly used to package hard gelatin capsules. Shelf life restrictions of the blister pack components can be problematic for low volume users due to the requirement to purchase larger quantities. Here we investigated the physical and chemical properties of blister pack foils to determine if a change in their nature occurred when the expiry date was exceeded.