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By Cathy Zhao

April 10, 2020

Barriers are very important for drug packaging systems. There are two roles demanded of a barrier. The first is to protect drug products from the environment. This is the primary function of a drug container closure system. The second is to prevent drug products from interacting with the packaging materials themselves. Elastomer closure manufacturers have been working to improve these barriers through multiple technologies. The technologies used on commercial products are traditional coating, and film lamination. Each has pros and cons.