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VCI Film Technical Product Guide · Global Anti-Corrosion Packaging

VCI Film Guide

VCI film is polyethylene-based packaging film formulated with vapour corrosion inhibitors for bags, wraps, liners and pallet shrouds. This guide covers film types (multimetal, anti-static, stretch, shrink, bubble, woven), how to choose by metal and route, sealing practice, and how film fits with VCI paper, desiccant and aluminium barrier systems for export and storage.

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Multimetal VCI Film·Anti-Static Grades·Stretch / Shrink / Bubble·Bags & Liners·Export Systems
What VCI film is

A plastic carrier that both contains the part and releases corrosion inhibitor into the sealed air around it.

Unlike plain PE bagging film, VCI film is engineered so inhibitor chemistry is available at the surface and as vapour inside the package. That dual role makes it the default outer or unit pack for export metal: it can bag a component, line a crate, shroud a pallet or wrap a machine subassembly while delivering anti-corrosion performance.

Search language around this product includes VCI polyethylene film, VCI bags, VCI stretch wrap, VCI shrink film, multimetal VCI film, anti-static VCI film and corrosion inhibitor film. Mechanism background: how VCI works. Definition hub: what is VCI packaging.

VCI BagsMultimetal FilmAnti-Static VCIStretch / ShrinkCrate LinersUnit Packs
BagPrimary unit-pack format for parts and kits
WrapSheets and tubes for machines and subassemblies
LinerCrate and carton interiors for sealed volume
ShroudPallet-level stretch or shrink formats
Film family map

VCI film types and when each earns its place

TypeWhat it adds beyond base VCI PETypical jobs
Multimetal VCI filmChemistry balanced for steel with aluminium and copper-class metals in one pack.Auto components, mixed assemblies, general export parts. Product hub: VCI film.
Anti-static VCI filmESD-aware handling for electronics-adjacent metal and assemblies that need both corrosion and static control.Sensors, mechatronic modules, sensitive metal electronics packages.
VCI stretch filmLoad stability on pallets plus inhibitor delivery.Unitized metal loads where stretch wrap is already process standard.
VCI shrink filmTight contour wrap after heat shrink for stable sealed envelope.Irregular shapes needing close wrap and appearance control.
VCI bubble filmCushioning plus corrosion inhibition.Finished surfaces that scratch easily in transit.
VCI woven / reinforced filmTear and puncture resistance for heavy or sharp parts.Heavy fabrications, sharp edges, rough handling lanes.
Bio / enviro VCI film gradesSustainability-oriented film options where specification allows.Programmes with documented environmental requirements.
Selection logic

How to choose VCI film without guessing

1. List every metal

If more than steel is present, start with multimetal. Plated finishes and copper alloys must be declared.

2. Choose package geometry

Bag for discrete parts. Sheet/tube wrap for machines. Liner for crates. Stretch for pallet unitization.

3. Check handling risks

Sharp edges need reinforced grades. Cosmetics need bubble or soft interleaving paper under film.

4. Set duration and climate

Short dry inland routes differ from multi-week ocean or multi-month storage. Long routes usually add desiccant and may add aluminium barrier outside the VCI bag.

Film vs paper

When film leads and when paper still belongs

Prefer VCI film whenPrefer VCI paper when
You need a baggable closed volume or moisture-shedding outer wrap.You need interleaving between stacked parts or wrap on small tools.
Transparency helps inspection without full unpack.Breathable contact wrap is enough inside a larger sealed system.
Machine or subassembly needs full enclosure.Sharp or oily parts need paper contact layers under film.

Many highest-reliability packs use both: paper on contact faces, film as sealed bag. Paper products: VCI paper.

Application rules

How to use VCI film so it actually works

Clean and dry metal first. Coolant, fingerprints and chlorides defeat adsorption.

Close the free volume. Heat seal bags or make continuous film seals; decorative wraps are not seals.

Minimize empty time. Do not leave partially bagged metal open in humid halls for hours.

Size for the part and duration. Large free volume may need emitters in addition to film.

Protect from puncture. Sharp corners need pads or reinforced film so the sealed atmosphere survives handling.

Document the grade. Multimetal vs ferrous, anti-static needs, and target storage window belong on the pack instruction.

Export machine stack (film inside a larger system)

For capital equipment, VCI film or paper protects machined surfaces, desiccant manages crate air, and aluminium barrier bags extend sealed life. Method: how to pack a machine for export. Barrier: moisture barrier bags. Desiccant: industrial desiccants.

Quality and compliance language

What serious RFQs ask for on VCI film

Buyers often request nitrite-free formulations, multimetal performance statements, SDS documentation, and alignment with military packaging practice language such as MIL-PRF-class VCI performance expectations for film/paper families. European programmes may require evidence under occupational and product safety frameworks (for example nitrite-free expectations associated with TRGS 615 guidance cultures and independent lab evaluation). Always tie claims to the certificate set of the exact grade supplied.

BENZ manufactures VCI film families and specifies them globally for automotive, engineering, energy and capital-equipment supply chains. This guide is written as product authority content from a global VCI company, not a regional reseller brochure. Catalogue entry: VCI film products.

Related VCI pages

Continue into the VCI knowledge system

Frequently asked

VCI film questions buyers search

What is VCI film used for?

To bag, wrap or line metal parts and assemblies so vapour corrosion inhibitors protect steel and other metals during storage and transport, often without oil.

Is multimetal VCI film required for aluminium parts?

If aluminium or copper alloys share the pack with steel, multimetal grades are the safe default. Ferrous-only film can be wrong for mixed metals.

VCI stretch film vs ordinary stretch wrap?

Ordinary stretch stabilises loads only. VCI stretch adds corrosion inhibitor delivery while unitizing. Use VCI grades when bare metal is in the load.

Can VCI film replace an aluminium barrier bag?

Not for the longest high-humidity programmes. Film provides VCI and some moisture resistance; aluminium barrier laminates are the high-barrier envelope. They often stack: VCI bag inside barrier bag with desiccant.

How thick should VCI film be?

Thickness is a handling and puncture decision as much as a chemistry decision. Sharp or heavy parts need more robust gauges or reinforced constructions. Specify by abuse level, not myth numbers alone.

Does anti-static VCI film protect electronics from corrosion and ESD?

Anti-static VCI grades address static control needs alongside metal protection for electronics-adjacent assemblies. Fine electronics moisture programmes still follow electronics packaging standards; do not assume one film solves every ESD and moisture rule.

How long can metal stay in a sealed VCI film bag?

Depends on grade, seal, climate cycles and metal condition. Months to multi-year storage is achievable with correct system design; open or punctured bags void the design assumption.

Who should write the VCI film packing instruction?

A packaging engineer who can combine metal list, film type, seal method, desiccant quantity and route duration. BENZ specifies as a global VCI manufacturer and protective-packaging company.

Need multimetal, anti-static or export-grade VCI film specified?

Send metal types, bag or wrap format, handling abuse level, route climate and duration. A complete film system can include paper interleaving, desiccant and barrier as required.

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