High-Barrier EVOH Material for Food Packaging Applications - China Suppliers & Factory Products
Performance Features of SVW™ EW-3801S in Food Packaging
1. Outstanding Oxygen Barrier Performance
EVOH (Ethylene-Vinyl Alcohol Copolymer) is widely recognized as one of the most advanced high-barrier materials for food packaging. Under low-humidity conditions, EVOH achieves an oxygen transmission rate (OTR) as low as 0.1–1.0 cm³/m²·day, significantly outperforming conventional packaging materials such as PA, PET, and PE.
In multilayer co-extrusion or laminated structures, EVOH is typically positioned as the core barrier layer and protected by moisture-resistant materials such as PE or PP. This structural design allows EVOH to maintain stable barrier performance even in complex environments including cold-chain logistics, high-humidity storage, and thermal processing, effectively delaying food oxidation and quality degradation.
2. Excellent Mechanical Synergy and Structural Design Flexibility
EVOH is rarely used as a standalone material. Instead, it is integrated into 5-layer or 7-layer co-extruded structures, forming a highly synergistic, multifunctional system with other polymers such as PA, PP, PE, and mPE:
- PA / BOPA: Provides excellent puncture resistance, impact strength, and abrasion resistance.
- PE / mPE: Offers reliable heat-sealing performance and superior low-temperature toughness.
- EVOH: Serves as the core gas and aroma barrier layer.
This engineered multilayer design enables packaging solutions that combine high barrier performance with mechanical strength, flexibility, and processing stability.
3. High Transparency and Superior Product Display
With optimized structural design, EVOH-based packaging can achieve near glass-like clarity, meeting modern food packaging demands for visibility, freshness perception, and premium presentation.
This advantage is particularly important for product categories such as fresh meat, seafood, and dairy products, where visual appearance strongly influences consumer perception of quality and freshness.
4. Food Safety and Global Regulatory Compliance
EVOH can be processed using solvent-free co-extrusion or compliant lamination technologies, eliminating risks of solvent residue or odor migration. EVOH materials comply with major international food-contact regulations, including:
- U.S. FDA food contact standards
- EU Regulation 10/2011
- Food packaging safety requirements in multiple export markets
These properties make EVOH especially suitable for food packaging applications targeting high-end markets such as Europe, North America, Australia, and Japan.
Frequently Asked Questions (FAQ)
What makes EVOH superior to traditional packaging materials like PET and PE?
EVOH provides an exceptionally low oxygen transmission rate (OTR) of 0.1–1.0 cm³/m²·day under low-humidity conditions, offering a significantly higher gas barrier than conventional materials, which helps delay food oxidation.
Is EVOH typically used on its own for packaging?
No, EVOH is rarely used as a standalone material. It is usually integrated as the core barrier layer within 5-layer or 7-layer co-extruded structures alongside materials like PA, PP, or PE to combine barrier properties with mechanical strength.
How does EVOH structure handle high-humidity environments?
In a multilayer design, the EVOH core is protected by moisture-resistant outer layers (like PE or PP). This protects the EVOH from moisture, allowing it to maintain stable barrier performance even in high-humidity storage or cold-chain logistics.
Why is EVOH packaging beneficial for fresh meat and seafood?
EVOH-based packaging can achieve near glass-like clarity. This high transparency is crucial for fresh meat and seafood, as it allows consumers to clearly assess the quality and freshness of the product.
Does EVOH packaging comply with international food safety standards?
Yes, EVOH materials comply with stringent international food-contact regulations, including U.S. FDA standards and EU Regulation 10/2011, making them safe for direct food packaging in global markets.