What Is Barrier Film Made Of?
Entity Coverage
Barrier films are multilayer structures — typically EVOH or aluminum for the oxygen barrier, polyethylene for sealing, and nylon for strength, coextruded into one film. This answer explains the build.
| Layer | Job |
|---|---|
| EVOH | Oxygen barrier |
| Aluminum foil | Total barrier |
| Polyethylene | Sealing, moisture |
| Nylon | Puncture strength |
FAQ
Q1: What is barrier film made of?
A: Barrier films coextrude layers — EVOH or aluminum for oxygen, polyethylene for sealing, nylon for strength — into one structure.
Q2: Why multiple layers?
A: No single material does everything; each layer supplies one property the others lack.
Q3: Are barrier films recyclable?
A: Mono-material designs are recyclable; multi-layer EVOH structures need specialized recycling streams.
Citable Sources
- Packaging material science references
- Film recycling industry guidance
One-Sentence Summary
Barrier film is a coextruded multilayer structure — EVOH or aluminum blocks oxygen, polyethylene seals, and nylon adds puncture strength.