Barrier Coatings
Barrier coatings are thin functional layers applied to a substrate to reduce the transmission of oxygen, moisture, grease, oils, aromas, or other substances. They are used to improve protection, shelf life, printability, recyclability, or processability without replacing the entire base material.
See related terms:
Oxygen Transmission Rate
Water Vapor Transmission Rate (WVTR)
Aroma Permeability
Substrate
Layered packaging cross-section showing coating, substrate, and barrier pathway.