Key Features

Superior Barrier Properties: The core feature. It provides an excellent barrier against oxygen, moisture (water vapor), light (UV), and odors due to the aluminum foil layer. This prevents spoilage, oxidation, and mold growth.

Excellent Light Blocking: The bag is 100% opaque, offering complete light protection. This is critical for light-sensitive products (e.g., pharmaceuticals, coffee, spices) to prevent degradation.

High Mechanical Strength: Strong resistance to puncture, tearing, and bursting. Multi-layer structures (e.g., PET/AL/PE or PET/AL/NY/PE) make the bag durable for shipping and storage.

Heat Sealability: The inner layer (usually PE or CPP) allows the bag to be heat-sealed, creating an airtight, hermetic closure.

Wide Temperature Tolerance: Capable of withstanding high-temperature retort sterilization (up to 121°C / 250°F for retort bags) and low-temperature freezing (down to -50°C / -58°F).

Surface Printability: The outer layer (often PET) can be easily printed with high-quality, vibrant graphics and product information (typically rotogravure or flexographic printing).

Available with Anti-Static Properties: Special versions (ESD bags) are available for electronic components to prevent electrostatic discharge damage.

Specification：

Applications：

Food & Beverages: Coffee, nuts, snacks, spices, and dried goods.

Pharmaceuticals & Medical Supplies: To ensure sterility and potency.

Electronics: Protecting sensitive components from electrostatic discharge (ESD versions) and moisture.

Chemicals & Industrial Products.

Product Package & Transport:

FAQ

1.What is the material structure of the aluminium foil bag? What layers are used?

Standard construction is
PET / AL / PA / PE (or CPP). Each layer serves a purpose:

• PET (Outer): Provides mechanical strength and printability
• Aluminium Foil (Core): The key barrier layer against oxygen, moisture, and light
• PA/Nylon (Mid-layer): Adds puncture and tear resistance
• PE/CPP (Inner sealing layer): Food-grade heat-sealable layer







2.What are the Oxygen Transmission Rate (OTR) and Water Vapor Transmission Rate (WVTR) values? Can you provide test reports?

OTR (Oxygen Transmission Rate): < 0.5 cm³/(m²·24h·atm)
WVTR (Water Vapor Transmission Rate): < 0.01 g/(m²·24h)




3.What thickness options are available? Can you customize thickness?

Typical thickness ranges from 70 to 180 microns. Suppliers can customize based on product requirements:

• Light-duty (70-90μm): For dry snacks, tea, spices
• Standard (100-120μm): For coffee, nuts, dried fruits
• Heavy-duty (130-180μm): For industrial applications, large volume packaging, or products requiring extra puncture resistance




4.Can you print custom artwork/logos on the bags? What are your printing capabilities?




5.Yes, most B2B suppliers offer
gravure printing (rotogravure) — best for large volumes with high-quality, consistent results. Some also offer digital printing for smaller runs and faster turnaround.




6.What you'll need to provide: Artwork in
AI, EPS, CDR, or PDF format with CMYK color specifications and Pantone codes




7.Setup cost: Custom printing requires plate fees — typically 50–
50–300 depending on the number of colors and complexity.