Definition
A high-oxygen-barrier polymer layer used in multilayer films and laminates to reduce oxygen ingress.
Applications
- High-barrier recyclable PE structures (when designed)
Benefits
- Extends shelf life by lowering OTR
- Protects flavor and aroma
- Reduces oxidation
Industry Examples
- Medical: barrier layer in pouches to protect moisture/oxygen-sensitive components.
- Industrial: oxygen-sensitive additives packaged in EVOH-containing liners.
- Electronics: incorporated into multilayer MBB films to enhance oxygen and moisture barrier performance for corrosion-sensitive assemblies.
FAQ
Q: Is EVOH moisture sensitive?
A: Yes—outer layers protect it from humidity.
Q: When choose EVOH vs foil?
A: EVOH for clear barrier and some recyclability; foil for maximum barrier and light block.