Definition
A film or laminate engineered to limit gas/moisture transmission (OTR/MVTR) to protect product quality.
Applications
- Medical sterile barriers
- Moisture-sensitive powders
Benefits
- Extends shelf life
- Preserves aroma
- Prevents moisture pickup or oxidation
Industry Examples
- Medical: barrier layers in device pouches to maintain sterility and dryness.
- Industrial: barrier wraps for electronics to prevent corrosion during ocean freight.
- Electronics: protects PCBs and semiconductor reels from humidity ingress during ocean freight and long-term warehouse storage.
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FAQ
Q: How do you choose a barrier film?
A: Start with product sensitivity and target OTR/MVTR, then validate with testing.
Q: Is “high barrier” always needed?
A: No—over-engineering increases cost and may hurt recyclability.