PUDI Food-Grade Barrier Film（EVOH&PVDC）

1. Product Name

2. Key Product Highlights (Bullet Points)

• Superior Oxygen Barrier: Engineered with specialized resin layers (such as EVOH or PVDC) that drastically reduce oxygen transmission, effectively preventing oxidation and extending the shelf life of perishable goods.
• High Moisture Resistance: Provides an excellent barrier against water vapor, keeping products moist and preventing weight loss or freezer burn during frozen storage and transport.
• Versatile Thermoforming: Available in various structures designed for deep-draw thermoforming, allowing the film to mold perfectly to complex tray shapes without webbing or tearing.
• Crystal Clear Presentation: Offers high transparency and gloss, enhancing the visual appeal of the packaged product and allowing for clear barcode scanning.
• Safety & Compliance: Manufactured with food-grade, non-toxic materials that are BPA-free and fully compliant with FDA and EU food contact regulations, ensuring safety for direct food contact.

3. Technical Specifications Table

• Extended Shelf Life: By significantly lowering the Oxygen Transmission Rate (OTR), the film slows down bacterial growth and oxidation, keeping meat red and fresh for longer periods.
• MAP Compatibility: Perfect for gas-flush packaging. The film retains the specific gas mixture (Nitrogen/CO2) inside the package, maintaining the product's texture and color.
• Durability: High puncture resistance ensures that sharp bones or frozen edges do not compromise the package seal during logistics.
• Consumer Appeal: The "fresh look" is vital for sales. Our films offer excellent optics, ensuring the product looks appetizing on the shelf.
• Sustainability: We offer recyclable mono-material barrier structures (e.g., All-PE or All-PP) that provide high barrier properties without the environmental impact of multi-material laminates.

• OTR (Oxygen Transmission Rate): Ranges from <1 to 20 cm³/m²/24h depending on the layer structure.
• WVTR (Water Vapor Transmission Rate): < 2 g/m²/24h for high-moisture barrier grades.
• Tensile Strength: High strength to withstand automated packaging machine stress.

5. Application Scenarios

• Fresh Meat & Poultry: Essential for Modified Atmosphere Packaging (MAP) of beef, pork, and chicken to maintain the bright red color (oxymyoglobin) and prevent spoilage.
• Seafood & Fish: High barrier properties prevent the "fishy" odor from escaping and protect the delicate flesh from oxidation and dehydration.
• Cheese & Dairy: Protects cheese from drying out and prevents mold growth by blocking oxygen ingress.
• Ready Meals & Processed Foods: Used for lidding trays of cooked meals, ensuring hygiene and extending the "use-by" date for retail convenience.
• Pharmaceuticals: Sterile barrier packaging for medical devices and pharmaceutical products requiring high protection from moisture and contamination.

6. Selection Guide: Choosing the Right Barrier

• Barrier Type:
  • EVOH (Ethylene Vinyl Alcohol): The gold standard for Oxygen Barrier. Best for meats and products sensitive to oxidation. Note: EVOH is sensitive to moisture, so it must be sandwiched between moisture-resistant layers (like PE).
  • PVDC (Polyvinylidene Chloride): Excellent for Moisture Barrier and good for Oxygen. Often used in high-humidity environments or for very wet products.
  • PA (Polyamide/Nylon): Provides good mechanical strength and moderate gas barrier properties.
• Forming vs. Lidding:
  • Forming Film (Bottom Web): Thicker and designed to be heated and stretched into a tray shape (Thermoforming).
  • Lidding Film (Top Web): Designed to seal onto the rim of a pre-made tray or a formed bottom web.
• Permeability Needs:
  • High Barrier: For long shelf-life (weeks/months).
  • Medium/High Breathability: For fresh produce that needs to respire (see our PVC/PE Cling Films).

7. Frequently Asked Questions (FAQ)