VCI Stretch Film — Corrosion Inhibiting Wrap for Metal Protection
Corrosion-inhibiting protection for metal products
VCI (Vapor Corrosion Inhibitor) stretch film combines the load containment of standard stretch film with active corrosion protection for metal parts and components. The embedded VCI chemistry creates an invisible molecular shield that prevents rust and oxidation during storage and transit.
Specifications
- Thickness
- 17–25 μm
- Width
- 300–500 mm
- Length
- 300–600 m
- Core
- 1" / 3"
- Protection
- Up to 24 months
VCI Stretch Film — Advanced Corrosion Protection for Metal Products
VCI stretch film represents a breakthrough in packaging technology — combining the load containment and protection of standard stretch wrap with active vapor-phase corrosion inhibition. Manufactured by JZJ Film, our VCI stretch film eliminates the need for separate VCI paper, bags, or sprays, simplifying your packaging process while providing superior rust protection for ferrous and non-ferrous metal components.
What Is VCI Stretch Film?
VCI (Vapor Corrosion Inhibitor) stretch film is a multi-layer stretch film with VCI chemistry embedded in the inner layers. As the film wraps around metal parts, it continuously releases corrosion-inhibiting vapors that form an invisible molecular protective layer on exposed metal surfaces. This molecular barrier prevents moisture, oxygen, and corrosive agents from reaching the metal surface, effectively preventing rust and oxidation.
The VCI technology works within the enclosed space created by the stretch wrap, making it ideal for pallet-wrapped metal components, automotive parts, hardware, and precision machined parts.
How VCI Stretch Wrap Works
When VCI stretch film is applied around metal products, the following process occurs:
1. VCI release — The corrosion inhibitors slowly volatilize from the film surface into the enclosed air space
2. Molecular adsorption — VCI molecules migrate to and adsorb onto all exposed metal surfaces
3. Protective layer formation — A mono-molecular protective layer forms on the metal, preventing corrosive agents from contacting the surface
4. Continuous protection — The VCI film continues to release inhibitors throughout storage and transit, maintaining protection for up to 24 months
Metals Protected by VCI Film
JZJ VCI stretch film protects a wide range of metals:
- Ferrous metals — Steel, cast iron, powder metal, galvanized surfaces
- Non-ferrous metals — Copper, brass, aluminum, zinc, bronze
- Multi-metal formulations — Available for packages containing multiple metal types
We offer single-metal and multi-metal VCI formulations. Contact our team with your specific metal types and we will recommend the appropriate VCI chemistry.
Applications of VCI Stretch Film
VCI stretch film is used extensively in:
- Automotive industry — Engine blocks, brake components, transmission parts, shafts
- Precision machining — CNC-machined parts, bearings, gears, tooling
- Hardware and fasteners — Bolts, nuts, screws, hinges, fittings
- Export packaging — Metal components shipped internationally by sea freight
- Military and defense — Weapons components, vehicle parts, equipment preservation
- Electronics housings — Metal enclosures, chassis, and frames
Compliance and Standards
JZJ VCI stretch film is formulated to comply with MIL-PRF-22019 (military corrosion inhibition standard) and ASTM D1748 (rust prevention test). Our VCI chemistry is nitrite-free, non-toxic, and safe for handling. The film does not alter the surface finish, conductivity, or paintability of protected metal parts.
Why Choose JZJ VCI Film?
Unlike purchasing separate VCI paper and stretch film, our integrated VCI stretch film eliminates an entire packaging step. You wrap once with VCI film and get both load containment and corrosion protection simultaneously. This reduces labor costs, material handling, and packaging inventory complexity.
As a specialized stretch film manufacturer, JZJ Film produces VCI film in standard specifications and custom formulations. Contact us for technical data sheets, performance test reports, and free samples to validate on your metal products.
Key Features
Applications
Frequently Asked Questions
What is VCI stretch film and how does it prevent rust?
VCI (Vapor Corrosion Inhibitor) stretch film contains embedded corrosion-inhibiting chemicals that slowly release vapor-phase molecules into the enclosed space around metal parts. These molecules form a molecular-thick protective layer on metal surfaces, blocking moisture and oxygen that cause rust. The process is continuous, providing up to 24 months of protection during storage and transit.
What is VCI paper vs VCI stretch film?
VCI paper uses the same corrosion-inhibiting chemistry but is applied as interleaving sheets or wraps around individual parts. VCI stretch film combines VCI protection with the load containment of stretch wrap — you wrap the pallet once and get both corrosion protection and load stability. This eliminates the need for separate VCI paper, reducing labor and material costs.
How long does VCI stretch film protect metal from corrosion?
JZJ VCI stretch film provides corrosion protection for up to 24 months when used in enclosed packaging (fully wrapped pallets). The actual protection duration depends on factors including storage temperature, humidity, and the integrity of the film seal. For long-term export packaging by sea freight, VCI film is the industry-preferred solution.
Is VCI stretch film safe for electronics and painted surfaces?
Yes, our VCI stretch film uses a nitrite-free, non-toxic formulation that is safe for electronics, painted surfaces, and coated metals. The VCI chemistry does not leave residue, affect conductivity, or interfere with paint adhesion. It is safe for direct contact with finished metal parts without requiring additional protective barriers.
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