VCI Machine Stretch Film
VCI Machine Stretch Film from OPALUS PACK is a factory-made corrosion protection stretch film for metal parts, steel coils, automotive components, and machinery pallets during export storage and shipping. It combines machine-grade stretch wrap strength with vapor corrosion inhibitor technology, helping form a temporary molecular layer on metal surfaces inside sealed packaging. For humid warehouses, ports, and ocean freight routes, it offers cleaner anti-rust protection without relying only on oils or heavy coatings.
- Manufacturer: OPALUS PACK, factory-produced for industrial metal packaging
- Main use: machine pallet wrapping for rust-sensitive metal goods
- Film type: multilayer LLDPE with VCI additive
- Typical thickness: 20 – 30 um for export-grade loads
- Machine compatibility: 150 % – 300 % pre-stretch range
- Reference protection period: 12 – 24 months under sealed, controlled conditions
Types of Machine Stretch Films
Product Overview
This VCI Machine Stretch Film is made for factories that ship metal products through changing climates, long storage periods, or sea freight routes. A normal machine stretch wrap film can hold a pallet together, but it does not actively help control corrosion. This film adds vapor corrosion inhibitor performance, so the wrapped pallet becomes a more controlled packaging space for steel, aluminum, copper, brass, and mixed-metal assemblies.
Inside the package, VCI molecules move through the enclosed air space and settle on exposed metal surfaces. This helps slow the reaction between metal, oxygen, and moisture. In OPALUS PACK packaging trials on standard export pallets, tighter sealing coverage and stable film tension reduced visible moisture-related rust spots compared with loose wrapping under the same storage conditions.
For best results, metal parts should be dry and reasonably clean before wrapping. Heavy oil residue, dust, or wet surfaces can reduce VCI efficiency because the protective molecules cannot settle evenly.
Benefits
- Combines load containment and anti-rust stretch film performance in one roll
- Helps reduce rust during storage, inland transport, and ocean freight
- Runs on automatic and semi-automatic wrapping machines with stable unwind
- Reduces oily surface cleanup in many export packaging applications
- Supports cleaner handling for automotive, machined, and steel components
- Performs better with controlled tension, sealed overlap, and fewer air gaps
- Helps protect irregular metal shapes and mixed-metal pallet loads
How does VCI Machine Stretch Film protect metal during ocean freight?
Ocean freight can expose pallets to warm ports, cooler nights, container condensation, and long periods of limited airflow. VCI Machine Stretch Film helps by building a vapor-phase protective atmosphere inside the wrapped pallet. The tighter and more consistent the wrapping, the easier it is for VCI molecules to stay active around the metal. Poor sealing, torn film edges, or large void spaces can weaken protection, so wrapping quality matters as much as film selection.
Technical Data Sheet
| Item | Typical Value |
|---|---|
| Product Type | VCI machine stretch film |
| Brand | OPALUS PACK |
| Film Structure | Multilayer LLDPE with vapor corrosion inhibitor additive |
| Thickness | 20 – 30 um |
| Width | 400 – 500 mm |
| Roll Length | 1500 – 3000 m |
| Core Size | 3 inch paper core |
| Tensile Strength | >=20 MPa |
| Elongation at Break | 250 – 350 % |
| Machine Pre-Stretch Range | 150 % – 300 % |
| Metal Compatibility | Steel, iron, aluminum, copper, brass |
| Humidity Reference | Best used with controlled moisture below 60 – 80 % RH |
| Temperature Reference | Packaging trials based on 5 C – 35 C handling conditions |
| Protection Period | 12 – 24 months under sealed and controlled conditions |
| Surface Requirement | Clean and dry metal surface recommended |
Applications
- Steel coil and sheet metal pallet wrapping
- Automotive parts export packaging, including engine and gearbox components
- CNC machined parts and precision metal components
- Industrial machinery parts stored before assembly or shipment
- Metal fasteners, hardware, bearings, and spare parts
- Mixed-metal assemblies requiring corrosion protection stretch film
- Export pallets moving through humid warehouses, ports, or sea freight routes
What thickness and stretch ratio are suitable for industrial metal pallets?
For most export metal pallets, 20 – 30 um film gives a practical balance between puncture resistance, cost control, and machine stretch performance. Sharp steel edges, heavy coils, or uneven machinery parts may need the higher end of that range. A 150 % – 300 % pre-stretch setting is common, but the best setting depends on the wrapper, pallet shape, and load weight. Too much stretch may reduce edge strength, while too little stretch can waste film and reduce load stability.
FAQ
Can VCI Machine Stretch Film replace anti-rust oil?
It can reduce or replace oil in some export packaging jobs, depending on metal type, storage time, humidity, and sealing quality.
Does the film leave residue on metal parts?
No. The protection is vapor-based, so it does not leave a heavy oily layer on the metal surface.
How long can the anti-rust protection last?
As a reference, 12 – 24 months is possible under sealed, dry, and controlled storage conditions.
What metals can be packed with this film?
It is suitable for steel, iron, aluminum, copper, brass, and many mixed-metal industrial assemblies. Testing is recommended for sensitive alloys or special surface treatments.