Material Structure | 3-layer laminate: PET outer layer (12–25 μm, UV blocking & mechanical strength), Aluminum foil core (6–9 μm, primary O₂/H₂O barrier), PE inner sealant layer (50–100 μm, heat-sealable) . |
Primary Function | Extends product shelf life to **≥24 months** by blocking oxygen (OTR ≤0.05 cm³/m²/day), moisture (WVTR ≤0.1 g/m²/day), and UV light (>99% at 200–400 nm) . |
Barrier Technology | Aluminum foil core enables OTR ≤0.05 cm³/m²/day (ASTM F1249) and WVTR ≤0.1 g/m²/day (ASTM D3985). PET layer provides UV protection (transmittance <0.5% in UV range) . |
Seal Integrity | Heat-sealable PE layer (130–180°C) with seal strength ≥25 N/15mm (ASTM F88), ensuring leak-proof packaging for powders/liquids . |
Mechanical Durability | High puncture resistance (≥35 N, ASTM D7192) and tensile strength (MD: 150–241 MPa, TD: 120–233 MPa) . |
Certifications | Complies with FDA 21 CFR, EU 10/2011, ISO 22000, REACH, and RoHS for food/pharma safety . |
Sustainability | Recyclable PET/AL/PE structure; aluminum layer separable in industrial recycling streams . |