Barrier-type VCI rust-proof packaging paper is the preferred choice for long-term storage

What is barrier-type VCI paper?
Barrier-type‍‌‍‍‌ VCI paper is MORE THAN a simple upgrade of an ordinary rust-proof paper.To such a paper one have to throw in, besides its good property of rust-prevention, the idea of a high-performance paper-plastic composite rust-proof packaging material which is especially meant for the harshest environment.
Its revolutionary multi-layered structure is made up of:
VCI rust-proof base paper layer: This layer is embedded with a highly effective vapor-phase corrosion inhibitor (VCI).
Polyethylene film and barrier film layer: These layers combined together create a very strong barrier against the permeability of moisture and oxygen.
Plastic woven fabric layer: This layer is responsible for providing the package with a very high physical strength and is also very resistant to tears.
This composite structure interacts synergistically to produce a "1+1>2" protective effect:
While packaging metal products, it is the VCI rust inhibitor in the base paper that is continuously and gently vaporized, thus a protective atmosphere is formed inside the packaging. It then actively adsorbs on all metal surfaces (including the hidden places such as crevices and cavities), thereby the formation of a monomolecular protective film which neutralizes the corrosive agents takes ‍‌‍‍‌place.
Meanwhile, the outer composite barrier film acts like a "raincoat" for the metal, with water vapor barrier performance far exceeding that of ordinary rust-proof paper. This fundamentally and significantly reduces the permeability of humid air from the outside, creating a stable microenvironment for the long-lasting effect of VCI.

Why is barrier-type VCI paper the "first choice" for long-term storage?

Advantage 1: Ultra-long protection cycle and excellent environmental adaptability. Ordinary rust-proof paper's rust-proofing ability rapidly diminishes in continuous high-humidity environments due to the paper itself absorbing moisture. Our barrier-type VCI paper, with its superior barrier layer, effectively resists fluctuations in environmental humidity, extending the volatilization and action period of VCI gases several times over. It is particularly suitable for:
Cross-border shipping: Resisting "container rain" and high-salinity air inside containers, ensuring the safe arrival of exported equipment and automotive parts.


Harsh environments: Providing reliable protection for precision machinery, power facilities, military equipment, and other fields with extremely high reliability requirements under non-ideal warehouse conditions.

Advantage Two: Unparalleled Physical Protection and Operational Reliability Long-term storage means packaging needs to withstand multiple handling, stacking, and potential environmental stresses. Our products possess superior physical strength and tear resistance, maintaining packaging integrity even when packaging heavy steel coils or large equipment, preventing localized rust failure due to damage. This ensures end-to-end safety from packaging production line to final use, reducing secondary maintenance costs and risks caused by packaging damage.

Advantage Three: Safety, Environmental Protection, and International Compliance In global trade, environmental compliance is a mandatory requirement. CVCI barrier paper is free of phosphates, chromates, and heavy metals, making it safe and harmless to humans and the environment. Our products have undergone rigorous testing and fully comply with EU RoHS, PFOS, PFOA, and REACH directives, serving as a "green passport" for your products to enter the global market.

Professional Application Guidelines: Maximizing Protective Performance
To ensure that barrier VCI paper performs as designed, we recommend following these professional guidelines (refer to GB/T 14188 standard):
Surface Treatment: The metal to be packaged must be clean, dry, and free of oil, sweat, and dust.
Standardized Operation: Avoid contaminating the rust-proof paper during cutting and packaging. Ensure the VCI paper side faces the metal and seal overlapping areas.
Environmental Control: Operate in a clean, dry environment to prevent condensation contamination.

Conclusion: Choosing barrier VCI rust-proof packaging paper is not just choosing a packaging material, but also selecting a "long-term insurance" policy for your core metal assets throughout the entire storage and transportation cycle. It represents a leap in rust prevention technology from passive isolation to active intelligent protection, and is the most reliable and economical solution for addressing the challenges of long-term storage. Let the professional protection of CVCI safeguard your product value and business reputation until the start of the next production cycle.