The difference between anti-static shielding bags and aluminum foil bags
1. Differences in materials and structures
Anti-static shielding bags
Material: Usually a multi-layer composite structure (such as APET/CPP or APET/CPE) is used, with a translucent conductive metal layer or conductive particles added in the middle, and some models contain a four-layer induction shielding structure.
Features: Translucent silver-gray appearance, surface resistivity is generally 10^8~10^11Ω, with both static dissipation and electromagnetic shielding functions.
Aluminum foil bag
Material: With aluminum foil layer (such as PET/AL/PE composite structure) as the core, the outer layer is the printing layer, and the inner layer is the heat sealing layer.
Features: The aluminum foil layer is thick (≥7μm), the light transmittance is low or opaque, and the barrier performance is stronger, but additional anti-static coating or material is required to achieve anti-static function.
2. Differences in application scenarios
Anti-static shielding bags:
Mainly used for packaging of electrostatically sensitive electronic components (such as PCB motherboards, IC chips), suitable for scenarios that require protection against ESD damage and electromagnetic interference.
Aluminum foil bags:
Widely used in food, medicine (light-proof and fresh-keeping), chemical industry (moisture-proof and anti-oxidation) and some electronic components (requires high barrier properties).
3. Cost
Shielding bags: Suitable for precision electronic protection, medium cost, customizable vacuum pumping function (not strictly vacuum).
Aluminum foil bags: The cost is higher when anti-static coating is required, but the barrier performance is better, which can meet food grade or high temperature sterilization requirements.