High Barrier Composite Films

What are High Barrier Composite Films?

High barrier composite films are multi-layer laminated films designed to protect packaged contents from oxygen, moisture, aroma, light, and other external factors.
These films often combine materials like PET, Nylon, EVOH, Aluminum foil, and PE/CPP to achieve outstanding barrier performance.
They are widely used in food, pharmaceutical, and industrial packaging that demands extended shelf life and product integrity.

What materials are typically used in high barrier films?

Common material structures include:
• PET/AL/PE (Aluminum foil composite film)
• PET/NY/PE
• BOPP/EVOH/CPP
• Nylon/PE with EVOH core layer
• Metallized PET or BOPP composite film
These multi-layer combinations ensure excellent oxygen and moisture resistance while maintaining flexibility and sealability.

What are the key benefits of using high barrier composite films?

High barrier films offer the following advantages:
• Outstanding oxygen and moisture barrier properties
• Extended product shelf life and freshness retention
• Excellent aroma, flavor, and UV protection
• Suitable for vacuum packaging and modified atmosphere packaging (MAP)
• Printable surfaces for branding and labeling
• Strong mechanical strength and puncture resistance

What applications require high barrier films?

High barrier composite films are widely used in:
• Vacuum-packed meats, sausages, and seafood
• Coffee, tea, and snack food packaging
• Pharmaceuticals and medical devices
• Cheese, dairy, and powdered food packaging
• Pet food and nutrient supplements
• Electronics and industrial moisture-sensitive components

How do high barrier films compare with standard films?

Standard composite films may provide basic protection but are not suitable for products requiring long-term preservation.
High barrier films include specialized layers like aluminum foil, EVOH, or metallized PET to significantly reduce gas and moisture transmission rates (OTR and MVTR).
They ensure better product protection, especially in harsh storage or transportation conditions.

Are high barrier films suitable for vacuum packaging and MAP?

Yes, high barrier composite films are commonly used in vacuum pouches and modified atmosphere packaging (MAP).
Their low permeability helps remove oxygen and retain nitrogen or CO₂, extending freshness and inhibiting microbial growth.
They are widely used in meat processing, cheese packaging, and ready-to-eat meal applications.

Can high barrier films be sealed, printed, or customized?

Absolutely. These films can be heat-sealed or cold-sealed, depending on the sealing layer (PE, CPP, EVA, etc.).
They are compatible with gravure, flexo, and digital printing.
Optional features include easy-tear notches, resealable zippers, anti-fog coating, and laser scoring.
Thickness, barrier levels, and surface treatments can all be tailored to specific packaging needs.

Are these films food-safe and compliant with regulations?

Yes, food-grade high barrier composite films are manufactured in compliance with FDA, EU, and GB standards.
They are safe for direct contact with food and beverages, including frozen, refrigerated, and retortable applications.
Certificates of analysis (COA), migration test reports, and material data sheets can be provided upon request.

What thicknesses are available for high barrier films?

Thickness typically ranges from 50 microns to 180 microns depending on the structure and application.
Vacuum pouch films are generally 70–150 microns, while snack food laminates may be thinner (20–60 microns).
Custom structures can be engineered based on product sensitivity and mechanical handling requirements.

Are high barrier films recyclable or eco-friendly?

Traditional multi-material barrier films are challenging to recycle.
However, mono-material recyclable barrier films (e.g., all-PE or all-PP) are increasingly available, offering sustainable packaging solutions.
Some manufacturers also offer bio-based barrier films using compostable materials like PLA or cellulose.
It’s important to match performance needs with sustainability goals during film selection.