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Depending on the design of the corrosion prevention solution, some VCI packaging products may be produced from low and high-density polyethylene resins and to an extent, are resistant to vapor penetration. Some atmospheric moisture will eventually find its way into a closed package. The presence of moisture in a package can be expected during shipments across areas of high humidity. When moisture permeates through the VCI plastic packaging products (flexible and rigid) the moisture is affected by the vapor corrosion inhibitors that are present in the VCI Protective Packaging product. The VCI product still inhibits corrosion despite a low level of moisture passing through the plastic. Corrosion problems arise when moisture is allowed to enter a package unimpeded by the VCI packaging products, e.g. through an incorrect closure, presence of water in the outside package or a significant hole in the package. When this happens, for example, the corrosion inhibiting molecules are allowed to escape or overtaken by unprecedented moisture it results in breaking up the protective corrosion inhibiting molecular layer that had formed on the surface of the metal. Thus an unimpeded airflow into the package must be avoided.
The time required for active corrosion inhibiting molecules from the VCI Protective Packaging product to saturate a package is a function of the volume and temperature of the package. Protection begins as soon as corrosion-inhibiting molecules reach the metal surfaces, and maximum protection is achieved when the entire environment of the package is saturated with the corrosion inhibiting molecules. Saturation in typical factory environments and in typical CKD packaging applications runs from 12 to 24 hours.
Test data show that VCI products do not adversely affect electrical and electronic components. In fact, the corrosion inhibiting molecules actually help improve the reliability of electrical and electronic components by preventing corrosion that is too small to be seen by the naked eye. It is absolutely safe to use VCI packaging products to prevent corrosion of any instruments, devices and equipment, which contain electric and electronic components.
Test data and review of corresponding scientific literature show that there are no inhalation or contact risks with VCI products. VCI products have been reviewed and cleared for use by factory, government and military personnel by the appropriate occupational health departments, including those of all major automotive manufacturers worldwide.
We recommend keeping VCI packaging products clean, out of direct sunlight and away from water while in storage. Simply keep the products in their original shipping cartons, bags or containers. If a carton is opened, cover the products with a sheet or bag of plain polyethylene to protect the products from dust and dirt. It is also recommended that VCI products be stored in moderate temperatures, typical of most indoor workplace conditions to minimize exposure to excessive temperatures and outside elements such as direct sunlight, rain or snow. Storing VCI products correctly ensures that the products will meet or exceed their estimated shelf life.
VCI stands for Volatile Corrosion Inhibitors. We apply VCI technology to inhibit corrosion on metal. VCI Film is packaging that generally consists of polyethylene film that has been impregnated with chemical formulations that are unique to each manufacturer. While the underlying formulations can vary significantly, the finished products all function similarly in that they release very low concentrations (typically in parts per ten-thousandth) of invisible corrosion inhibiting vapors into the surrounding air. The vapor molecules subsequently condense onto exposed metal surfaces and form a molecular corrosion shield that can protect against rust and other forms of corrosion for up to five (5) years, and even longer in some cases. When the VCI packaging is later removed, all vapor corrosion-inhibiting molecules rapidly evaporate. This leaves the metal parts clean and ready for immediate use.
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