Multi-Layer Barrier Structure PET Outer Layer: Biaxially oriented polyester (PET) provides high tensile strength (≥170 MPa) and excellent printability for branding Acts as a protective layer against abrasion and environmental factors Aluminum Core (AL): Aluminum foil (6-50 μm) delivers ultra-low oxygen/water vapor transmission (OTR ≤0.05 cc/m²·24h, WVTR ≤0.5 g/m²·24h), critical for extending shelf life of oxygen-sensitive products like juices and dairy Offers UV blocking (≥90%) to prevent light degradation PE Inner Sealant: Food-grade polyethylene (PE) ensures reliable heat sealing (seal strength: 6-12 N/15mm) and chemical resistance against oils/fats Functional Performance Retort & Temperature Tolerance: Withstands high-temperature processing (121°C for 30min) without delamination, supporting both ambient and refrigerated applications Lightweight Design: Replaces thicker traditional barriers (e.g., pure aluminum foil) while maintaining superior barrier properties, reducing packaging weight by 30%+ Recyclability: Compatible with specialized AL/PE separation streams, supporting circular economy goals Compliance & Safety Certified for direct food contact: FDA 21 CFR, EU 10/2011, LFGB, and RoHS (heavy metals ≤0.01ppm) BPA-free and compliant with global food safety standards (ISO 22000, HACCP) Product Specifications Material Composition & Dimensions Layer Structure: PET (12-50 μm) / Adhesive / AL (6-50 μm) / Adhesive / PE (3-100 μm) Total Thickness: 80-200 μm (customizable up to 350 μm for heavy-duty pouches) Width: 200-1,000 mm (compatible with VFFS/HFFS machines) Roll Length: 500-3,000 meters (3" paper core standard) Barrier & Mechanical Performance Oxygen Transmission Rate (OTR): ≤0.05 cc/m²·24h (23°C, 0% RH, ASTM D3985) Water Vapor Transmission (WVTR): ≤0.5 g/m²·24h (38°C, 90% RH, ASTM F1249) Light Blocking: UV barrier ≥90% (280-400 nm) Tensile Strength: ≥170 MPa (MD/TD, ISO 527) Processing & Customization Printing: Supports up to 10-color rotogravure printing with high-resolution graphics Surface Treatment: Double-side corona treatment (≥50 mN/m) for enhanced ink adhesion MOQ: 2 tons for custom orders; sample rolls available for machine trials Sustainability & Certifications Recyclability: Compatible with AL/PE separation recycling systems Certifications: ISO 9001, SGS, BRCGS A+, OK Compost INDUSTRIAL (optional)
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