Various Packaging Materials: Shortcomings

There are various methods of packing of metal parts, components, assemblies and military hardware. The concept behind every packaging option, is to ensure that the metal objects are not physically damaged and, at the same time, the metal parts are protected from corrosion and rust, during transportation, shipment and storage.

For Protection of Metal items from Damage, Corrosion, and Rust, the following options are being Conventionally used:

  • Wooden Boxes
  • Corrugated Boxes
  • Hessian Cloth Bituminised
  • Plastic Bags, Boxes etc
  • Silica Gel, Desiccant

Each option of packaging, has its merits and demerits with reference to corrosion prevention. Proper packaging solution involves selection of an option which gives optimum protection at minimum cost and enables ease of use in terms of saving of packing time and labour.

Advantages and Disadvantages of above Packaging Options, have been discussed in brief, as under:

“Wooden Boxes” as Packaging Material

“Wooden Boxes” have been used in industry, since many years to protect the metal parts from damage during transportation and shipment. It is wrongly believed that metal components packed in “wooden box”, will be protected from corrosion and rust. The wood has moisture and acetic acid stored in it, which is released at high temperature, causing extensive corrosion and rusting of metal parts.

“Wooden Boxes” are, therefore, suitable only for secondary packaging to avoid physical damages to metal items.

“Corrugated Boxes” as Packing Material

“Corrugated Boxes” are basically used to provide damage protection, to light and small components and parts. It is a well-known fact that water is extensively used in manufacturing of “corrugated sheets”. Some traces of water may remain in the form of moisture, which is released at high temperature, causing corrosion and rusting.

“Corrugated Boxes” are, therefore, suitable only for secondary packaging, but the same cannot be used for protection from corrosion.

“Bituminised Hessian Cloth” as Packing Material

“Bituminised Hessian Cloth” provide damage protection and also works as “high moisture barrier”. It is suitable for wrapping tubular metal material like large coils. However, it is very difficult to pack large objects which have different shapes and sizes. Use of this method is very expensive and time consuming.

“Bituminised Hessian Cloth” is suitable as primary packaging means.

“Plastic Sheet, Bags etc” as Packing Material

“Normal Plastic Sheets and Bags” provide protection from dust and, to some extent, from moisture. This option, if used as a primary packaging means, will not protect metal parts and components, from corrosion or physical damage and scratches.

To protect metal parts and auto components form physical damages and scratches, one has to use either “wooden boxes” or “corrugated boxes” as a secondary means of packaging.

Use of Sealrust VCI® Poly Sheets, Bags etc as a primary packaging means, will not only protect metal items form corrosion and rust but also from dust. Sealrust VCI® Poly Packaging Material, is cost effective, compared to any other option available for corrosion protection.

"Silica Gel, Desiccant etc" as Packing Material

“Silica Gel, Desiccant etc” absorbs moisture and, thus, protects the metal object, to some extent, from rusting. However, at high temperature, it will release the absorbed moisture causing corrosion. “Silica Gel, Desiccant etc” is suitable for very small parts and components. It cannot be used for large size parts, components and machines.

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