When using VCI film for packaging, if new air is injected, does the anti-rust film still have an anti-rust effect?

When using VCI Film for packaging, if new air is injected, the anti-rust effect of the VCI Film may be affected. The rust prevention principle of VCI (Vapor Phase rust Inhibitor) Film relies on the rust inhibitor inside the film evaporating to form a protective atmosphere inside the packaging, preventing the metal surface from coming into contact with corrosive substances such as moisture and oxygen from the outside. If fresh air enters the interior of the packaging, especially moist or oxygen-containing air, it may disrupt this protective atmosphere, exposing the metal surface to an environment that could cause corrosion and thereby reducing the anti-rust effect. Especially when the sealing is incomplete or the packaging film is damaged, the entry of external air will accelerate the oxidation process on the metal surface, leading to a decline in the effectiveness of the rust inhibitor. Although VCI rust inhibitor has a certain self-regulating ability and can protect the metal surface through the gas phase, this protective effect will gradually weaken when air is continuously injected. Therefore, to ensure the best protective effect of the VCI Film, it is necessary to ensure that the packaging is well sealed to prevent the entry of external air. Especially during storage and transportation, efforts should be made to minimize the damage to the packaging or the failure of the seal to ensure that the VCI Film can continue to function.