Attribute	Description	Reference
Material Composition	Multi-layer coextruded or laminated structure (e.g., PET/AL/CPE, PET/EVOH/PE, or PA/AL/PP) with aluminum foil (6.5-12 μm) or metallized PET for enhanced barriers.	7 13
Oxygen Barrier (OTR)	Ultra-low OTR ≤0.8 cm³/m²*day (23°C, 0% RH) via aluminum/EVOH layers, preventing tea oxidation and preserving polyphenols. Complies with ASTM F1249.	1 11 13
UV Blocking	Blocks >90% of UV radiation (200-400 nm) using UV-absorbing additives or metallized layers, protecting tea from light-induced flavor degradation.	3 9 13
Moisture Barrier	WVTR ≤1.5 g/m²*day (38°C, 90% RH) via aluminum foil (≥7 μm) or PVDC coatings, maintaining tea moisture content at 3-5%.	11 13 16
Aroma Retention	Prevents aroma loss and external odor contamination through high-density molecular barriers and inert gas flushing (N₂/CO₂) during sealing.	11 13
Thermal Stability	Withstands -20°C to 120°C, suitable for hot-fill tea bags, retorting (121°C sterilization), and frozen storage.	11 13
Safety Compliance	FDA 21 CFR, EU 10/2011, and LFGB certified for direct food contact; BPA-free and heavy metal migration below 0.01 ppm.	7 18 19
Printability	Corona-treated surface (≥38 dyne/cm) supports high-resolution rotogravure/flexo printing (≤10 colors) for brand customization.	7 13

Technical Specifications

Parameter	Specification	Reference
Thickness	70-150 μm (customizable; aluminum layer: 6.5-12 μm; tolerance ±3 μm)	7 12 13
Width	250-1,200 mm (extendable to 1,500 mm for industrial rolls)	7 13
Roll Dimensions	- Core Size: 3" (76 mm) or 6" (152 mm) - Max. Roll Weight: 150 kg	7
Mechanical Strength	- Tensile Strength: ≥120 MPa (MD), ≥100 MPa (TD) - Puncture Resistance: ≥35 N - Seal Strength: ≥5 N/15mm	3 13
Optical Properties	- Transmittance: ≤5% (UV), ≥85% (visible light) - Haze: ≤3% - Gloss: ≥90 (60° angle)	3 9
Functional Options	Anti-fog, anti-static, or active freshness agents (e.g., oxygen scavengers, tea polyphenol-infused layers).	4 13
Sustainability	Recyclable mono-PP/PET variants (GRS-certified) or home-compostable PLA blends (ASTM D6400).	3 12
Supply Parameters	- MOQ: 300 kg - Lead Time: 15 days (standard), 30 days (customized) - Certifications: ISO 22000, BRCGS packaging.