Material Composition Multilayer Hybrid Structure: Combines PET (polyethylene terephthalate) as the outer layer for mechanical rigidity and printability, a high-barrier core (e.g., metallized film, EVOH, or aluminum foil), and heat-sealable PE (polyethylene) or CPP (cast polypropylene) as the food-contact layer Optional nano-coatings (e.g., silica oxide) enhance oxygen/moisture barriers without compromising recyclability. Functional Additives: Includes UV inhibitors to prevent lipid oxidation in high-fat biscuits, anti-fog agents to maintain package clarity, and anti-static compounds to repel dust during high-speed packaging Barrier Performance Oxygen Barrier: Achieves oxygen transmission rate (OTR) ≤0.3 cm³/m²·24h·atm (ASTM D3985), preventing oxidative rancidity and preserving crispness in protein-rich biscuits Moisture Barrier: Maintains water vapor transmission rate (WVTR) ≤0.5 g/m²·24h (ASTM E96), ensuring water activity (aw) remains below 0.3 to avoid texture softening Extended Shelf Life: Validated for **≥12 months** freshness retention under ambient conditions (25°C, 60% RH) via accelerated aging tests (ASTM F1980) Crispness Preservation Technology Gas Flushing Compatibility: Optimized for nitrogen (N) or CO flushing to replace oxygen in headspace, reducing residual O to <0.5% Puncture Resistance: Withstands **≥45N puncture force** (ASTM F1306) to protect against sharp-edged inclusions (e.g., nuts, seeds) Thermal Stability: Maintains integrity across -40°C to 121°C, suitable for frozen storage and hot-fill applications Processing & Compatibility Machine Adaptability: Designed for vertical form-fill-seal (VFFS) and horizontal flow-wrap machines, operating at speeds up to 150 bags/minute with minimal film waste Sealing Performance: PE/CPP layer enables heat-seal strength ≥3.8 N/15mm (tested at 120-140°C), ensuring hermetic seals even on textured surfaces Safety & Sustainability Food-Grade Compliance: Meets FDA 21 CFR §177.1520, EU 10/2011, and ISO 22000 for direct food contact; uses heavy metal-free inks (migration <0.01 mg/kg) Eco-Friendly Options: Recyclable mono-PE/PP structures (GRS-certified) or **>30% recycled PET variants available, with carbon footprint ≤1.5 kg CO/kg Product Specifications Physical Parameters Thickness: 55-100 μm (customizable; standard: PET 12-25 μm + barrier layer 6-15 μm + PE/CPP 30-60 μm) Width: 150-1,200 mm (±0.2 mm tolerance; pre-cut for automated lines) Roll Dimensions: Core ID 76.2 mm; max. roll length 5,000 m; weight ≤120 kg Barrier & Mechanical Metrics OTR (23°C, 0% RH): ≤0.3 cm³/m²·24h·atm WVTR (38°C, 90% RH): ≤0.5 g/m²·24h Tensile Strength: ≥120 MPa (MD), ≥100 MPa (TD) (ASTM D882) Elongation at Break: ≥250% (ASTM D882) Shelf Life Validation Real-Time Testing: Maintains crispness, flavor, and microbiological safety for 12 months at 25°C/60% RH Accelerated Aging: Equivalent to 12 months confirmed via 90-day testing at 40°C/75% RH (ISO 5630-5) Printing & Customization Printing Technology: Supports 8-10 color rotogravure/flexographic printing with ≤0.1 mm registration accuracy; compatible with food-safe inks Surface Finishes: Glossy (90%+ light reflectance for vibrant branding) or matte (anti-scratch texture for premium feel) Certifications Quality Standards: ISO 9001 (QMS), ISO 22000 (food safety), BRC Global Packaging Standard Eco-Labels: GRS (Global Recycled Standard), ISO 14000 (environmental management)
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