Attribute	Description	Source Reference
Material Structure	Outer Layer: Biaxially Oriented Polyethylene Terephthalate (BOPET, 12-125μm thickness) with high tensile strength and transparency (≥85% light transmittance). Middle Layer: Vacuum-metallized aluminum (VMPET) for enhanced oxygen and moisture barrier. Inner Layer: Food-grade PE or CPP heat-sealable layer for airtight closure.	1 7
Barrier Performance	- Oxygen Transmission Rate (OTR): ≤3 cm³/m²·24h (blocks oxidation) - Water Vapor Transmission Rate (WVTR): ≤1.5 g/m²·24h (prevents moisture ingress) - UV light and odor blocking via aluminum layer.	1 7
Mechanical Strength	- Tensile strength: ≥150 MPa (longitudinal) - Tear resistance and puncture-proof design for durability during transport.	1
Temperature Range	- Operating range: -70°C to 150°C (suitable for freezing and microwave reheating) - Heat-sealing temperature: 120–150°C.	1 7
Customization	- Resealable zipper locks, one-way degassing valves (3–7 holes), tear notches. - Full-color digital printing for branding, holographic anti-counterfeit labels, matte/glossy finishes.	1 7
Sustainability	- Recyclable design (REACH compliant). - Optional biodegradable PLA composite layer (custom order).	2 6

Parameter	Details	Standards
Material Composition	BOPET/VMPET/PE or BOPET/AL/CPP (customizable)	Multi-layer lamination
Thickness Options	12μm, 16μm, 25μm, 36μm (standard); up to 70μm (heavy-duty)	GB/T 16958
Seal Strength	≥3.5 N/15mm (PE); ≥4.0 N/15mm (CPP)	ASTM F2029
Capacity	50g–2500g (custom sizes: stand-up pouches, flat-bottom bags, gusseted styles)	Customizable
Degassing Valve	3–7 holes for coffee bean CO₂ release; compatible with nitrogen flushing for freshness retention.	1 7
Printing & Finishing	Matte black/silver holographic options; CMYK/Pantone color matching; FDA-compliant inks.	1 7
Shelf Life Extension	Up to 12–18 months for roasted coffee; 6–12 months for dry snacks (depending on storage conditions).	1