Introduction
EVOH Barrier BIB Bags are a modern, high-performance solution utilizing Ethylene-Vinyl Alcohol (EVOH) polymer, known for its outstanding oxygen blocking properties. Suzhou Jingle Packaging uses EVOH as a core layer in multi-layer co-extruded films. EVOH offers an oxygen barrier significantly superior to standard PE films, approaching that of foil but providing the advantage of transparency or translucency, and often at a lower material cost than foil.
This material is ideal for products requiring a high O₂ barrier but not necessarily total light block.
Specification
| Barrier Material | Ethylene-Vinyl Alcohol (EVOH) |
| OTR Rating | Low, typically in the range of 0.5 to 5 cc/m²/day (Depending on EVOH thickness) |
| Clarity | Transparent or translucent (Allows for visual inspection, if required) |
| Film Structure | PE/Adhesive/EVOH/Adhesive/PE (Common 5-layer co-extrusion) |
| Aseptic Option | Available with sterilization compatibility for aseptic filling |
Logistics & Global Compatibility
Industry Standard: The most common barrier film used in the global wine and cold-fill beverage BIB industry.
Logistics Savings: Enables ambient transport for many products, reducing reliance on expensive refrigerated shipping.
Regulatory Acceptance: EVOH polymers are widely approved for food contact in all major international markets (FDA, EU).
Dimensional Stability: Film retains its shape and integrity, crucial for automated high-speed filling lines.
FAQ
- Q: Is EVOH sensitive to humidity?
- A: EVOH's barrier performance can decrease in high humidity. However, the multi-layer structure encases the EVOH layer with moisture-resistant PE, mitigating this effect for most BIB applications.
- Q: Can EVOH bags be used for hot filling?
- A: Yes, EVOH films are compatible with standard hot-fill temperatures (up to 85掳C), provided the outer and inner PE layers are appropriately specified.
- Q: Are EVOH bags considered recyclable?
- A: As a multi-material plastic, EVOH bags are generally not compatible with mono-material PE recycling streams and are often classified as non-recyclable in current recycling infrastructures.