Collection: Vapour Phase Corrosion Inhibitor

• Cortec Corrosion Engineering and Field Services
• Cortec Eco Flow System

Is There Any Pre Or Post Packing Parts Cleaning Required With VpCI® Packaging?
Unique VpCI® technology works by first saturating the nearby area and atmosphere within the VpCI® Packaging. Once the packaging is opened and the metal part removed the VpCI® molecules evaporate from the surface.

You should still prepare the metal surface to which it will be applied though. Ensure it is dirt, oil, grease and contaminant free before application.

What Is The Best Way To Close VpCI® Packaging?
There are many different Vapor Phase Corrosion Inhibitor compositions and formats.

When using VpCI® flexible packaging, specifically VpCI® 126 bags consider an ISZ impulse heat sealer machine for optimal seal quality.

It is also possible to zip tie, zip close or tape the bags close the bags but these are sub optimal and not suitable for product that may be transported or stored for a significant amount of time.

Corrosion Inhibitor Papers can be wrapped or taped around parts. Our WSZ constant heat sealer machine can seal multi layered wax/kraft paper like these.

Can You Offer Any Advice On The Dosing And Placement Of VpCI®, VCI Products?
Based on our and our partners continued laboratory tests over many years of successful vapour phase corrosion inhibitor application, we can recommend the below guidelines for use:

• Place VpCI ® delivery source as close to the metal surface to be protected as possible.
• The optimal distance from Cortec® VpCI 126 for example is less than 30cm/12”.
• If the distance between VpCI® 126 is greater than 30cm/12” consider a VpCI® 130 foam product or something form the BioPad series. Where this is the case additional VpCI ® sources should be placed within the packaging enclosure.
• VpCI® films should completely enclose the packaging. Consider one of our portable ISZ impulse heat sealer machines for optimal hermitic heat welds/seals.
• When using VpCI® 126 film consider using approximately 6m² of material for every 1m³ of space/area to be protected.
• Some projects will call for a thicker film. An important consideration as permeability/MVTR rate (moisture vapour transmission) will be an issue for some products being transported or stored for an extended period.
• Make sure there are no unnecessary obstruction within the packaging enclosure. Vapour phase corrosion inhibitor molecules do need convenient access to the metal.

Can You Offer Advice On Best Practices for VpCI®,  VCI Products?

Best Practices include:

• Minimise distance between the VpCI® source/delivery and the metal.
• Keep void air spaces/pockets to a minimum.
• Where a product/asset has large void spaces consider using a combination of VpCI® emitters and flexible packaging.
• Anti-corrosion sprays such as VpCI®337 and VpCI®377 when used as a pre-treatment add to the efficacy and longevity of the primary layer of protection.
• Final preparation work for the package prior to shipping and opening.

Shipping:

• Vent the shipping container to help avoid excess moisture or mould growth.
• Double bagging can help reduce condensation build up.
• You can use additional desiccants with VpCI®. Consider the 1 x Cor-Pak® 1-MUL pouch. Each pouch can protect an area up to 1 ft³ (28 litre).

Opening. It is often the case that preserved items arrive at their destination and are opened prematurely. Either because:

• They need to be inspected.
• The goods are urgent for the end user.
• Secondary transport, assembly and staging is required.

This is normal. Do remember though once the enclosure is opened the VpCI® cannot adapt to the change in environment and so stops working.