Material Composition & Structure Triple-Layer Lamination: Combines PET (Polyethylene Terephthalate) as the outer layer for mechanical strength and printability (typical thickness: 12-25μm), Aluminum Foil (AL) as the core barrier layer (6-9μm) for absolute light/oxygen/moisture blocking, and PE (Polyethylene) as the inner heat-sealable layer (50-100μm) for packaging integrity7 Total thickness ranges from 80-200μm, customizable based on application needs (e.g., thicker PE for puncture resistance, thinner AL for cost efficiency). Functional Integration: The AL layer provides **>99% light-blocking efficiency and near-zero gas permeability**, while PET enables high-resolution branding, and PE ensures leak-proof seals even with oily or powdery contents7 Barrier Performance Ultra-High Protection: Achieves oxygen transmission rate (OTR) ≤0.05 cm³/m²·day·atm and water vapor transmission rate (WVTR) ≤0.01 g/m²·day, extending shelf life for oxygen-sensitive products (e.g., pharmaceuticals, perishable foods)7 The AL layer also blocks UV radiation, preventing flavor/ingredient degradation9 Mechanical & Thermal Properties Durability: Withstands puncture forces ≥50N (ASTM F1306) and tensile strength of 40-60 N/cm² (MD) / 30-50 N/cm² (TD)7 Temperature Resilience: Operates in -40°C to 120°C ranges, suitable for frozen storage, retort processing (121°C steam), and hot-fill applications7 Processing & Customization Printing Versatility: PET surface supports up to 10-color gravure printing with ≤0.1 mm registration accuracy, compatible with water-based or eco-solvent inks (REACH/ROHS compliant)9 . Finishes include matte/gloss coatings and holographic effects. Automation Compatibility: Pre-cut widths of 200-1200mm (±0.2mm tolerance) and roll lengths up to 5,000m for VFFS machines running at **≥200 bags/minute**7 Safety & Sustainability Certifications: Complies with FDA 21 CFR §177.1520 (food contact), EU 10/2011, ISO 13485 (medical devices), and BRCGS Product Specifications Physical Parameters Thickness:PET: 12-25μm AL: 6-9μm PE: 50-100μm Total: 80-200μm (customizable)7 1Roll Dimensions: Core ID 76.2 mm (3") or 152.4 mm (6"); max. length 5,000m; width 200-1200mm (±0.2mm tolerance). Sheet Sizes: Pre-cut sheets 300×300 mm to 600×600 mm (±0.5mm tolerance). Mechanical Properties Tensile Strength: 40-60 N/cm² (MD), 30-50 N/cm² (TD) (ASTM D882)7 Elongation at Break: 180-250% (ASTM D882). Peel Strength (Interlayer Adhesion): **≥9.5 N/25mm** (ASTM D3330)10 Thermal & Sealing Performance Heat Seal Strength: **≥35 N/15mm** at 110°C-160°C (ASTM F88)7 Seal Initiation Temperature: ≤110°C for energy-efficient processing. Barrier Metrics OTR (23°C, 0% RH): ≤0.05 cm³/m²·day·atm (ASTM D3985)7 WVTR (38°C, 90% RH): ≤0.01 g/m²·day (ASTM F1249)7 Compliance & Safety Certifications: FDA, EU 10/2011, ISO 13485, BRCGS, REACH SVHC <0.1%, ROHS7 Migration Limits: Heavy metals (Pb, Cd, Hg) <0.01 ppm; solvent residue ≤3 mg/m² (GB 9685)
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