High-Barrier Metallized Film BIB

Specification Table: MetPET/Foil Liners

Common Questions & Answers (FAQ)

• Q: Does the metallized layer affect the bag's flexibility?
• A: MetPET films are carefully selected and laminated to maintain high flexibility and crease resistance, preventing barrier degradation during filling and handling.

• Q: How do you prevent pinholes in the foil/MetPET layer?
• A: We use high-quality film and conduct non-destructive electrical spark testing (pinhole detection) during the lamination process and finished bag inspection.

• Q: Is a nitrogen blanket necessary with this high barrier?
• A: A nitrogen purge (blanketing the headspace) is always recommended for highly sensitive products to remove initial oxygen before sealing, even with the best barrier film.

Specification Features

• Laminate Strength: Adhesion layer ensures no delamination between the barrier and structural PE layers, even under hot-fill conditions.

• Moisture Barrier: The metallized layer also acts as an excellent barrier against water vapor, preserving the product's concentration.

• Controlled Curvature: The finished bag is designed to roll or fold without creating sharp creases that could damage the fragile barrier layer.

Production Process and Cooperation Advantages

• Custom OTR Guarantee: Providing a specific, quantified OTR performance guarantee based on the client's product and target shelf life requirements.

• Film Sourcing Audits: Only sourcing metallized films from certified suppliers with documented cleanroom processes to ensure film quality.

• Pre-Shipment Conditioning: Bags are climate-controlled prior to shipment to ensure the film properties are stable and ready for the client's filling process.

• Filling Line Calibration: Working with client engineers to fine-tune filling machine tension and temperature settings for optimal running of high-barrier films.