High-Barrier EVOH Material for Food Packaging | China Suppliers & Factory - SVW™ EW-3801S-EVOH
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:
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:
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 an advanced material for food packaging?
EVOH is renowned for its outstanding oxygen barrier performance. It achieves an oxygen transmission rate (OTR) as low as 0.1–1.0 cm³/m²·day, which significantly outperforms conventional materials like PA, PET, and PE, effectively preventing food oxidation.
Why is EVOH usually combined with other materials like PE or PP?
While EVOH offers excellent gas barrier properties, it is often protected by moisture-resistant materials like PE or PP in 5-layer or 7-layer co-extruded structures. This synergy ensures stable barrier performance even in high-humidity environments like cold-chain logistics.
Does EVOH packaging affect the visual presentation of food?
No, it actually enhances it. With an optimized structural design, EVOH-based packaging achieves near glass-like clarity. This high transparency is ideal for displaying fresh meat, seafood, and dairy products, boosting consumer perception of freshness.
Is SVW™ EW-3801S safe for direct food contact?
Yes, EVOH materials comply with major international food-contact safety regulations, including U.S. FDA standards and EU Regulation 10/2011. It can also be processed using solvent-free technologies to eliminate odor or residue migration.
Which global markets are most suitable for EVOH packaging?
Due to its strict regulatory compliance and premium quality, EVOH is highly suitable for demanding, high-end export markets such as Europe, North America, Australia, and Japan.