VCI Bag

VCI Bag (Vapor Corrosion Inhibitor Bag) is a plastic packaging bag infused with vapor corrosion inhibitors, designed to prevent metal products from rusting during transportation and storage. VCI molecules volatilize from the inner surface of the bag and adsorb onto the metal surface, forming a protective layer that blocks moisture and oxygen. Application scenarios: export hardware, bearings, automotive parts, precision instruments, and other rust-prone metal products. Precautions: Ensure the metal surface is clean and dry, avoid direct contact with acids and alkalis; the bag should be sealed, and the appropriate VCI grade should be selected based on transportation duration; different metals (such as steel, copper, aluminum) require matching VCI formulations. Difference from other terms: ordinary anti-rust bags rely only on physical isolation, while VCI bags have chemical corrosion inhibition; using them with desiccants enhances the effect but cannot replace vacuum packaging. In foreign trade, often compared with 'moisture-proof bags' and 'vacuum bags'; VCI bags are more suitable for irregularly shaped or oil-coated metal parts.