Applications of PVOH and Why It Is Chosen
Below we summarize key applications together with reasons for adoption and evaluation criteria.
Barrier Applications (resistant to gas and grease permeation) — “Blocking / Protecting”
Gas‑Barrier Films and Papers
Used as barrier layers in food packaging.
Why PVOH is selected:
PVOH films exhibit excellent barrier properties against O₂, CO₂, N₂, H₂ in low‑humidity environments—ideal for freshness preservation in food packaging.
Evaluation points:
oxygen transmission rate (OTR), humidity conditions, inherent biodegradability, recyclability
Grease Proof Paper
Used in fast‑food wrappers and other grease proof packaging.
Why PVOH is selected:
Its high grease resistance prevents grease penetration while maintaining paper strength.
Evaluation points:
grease resistance (KIT value), compliance with food‑contact regulations, inherent biodegradability, recyclability
