Corrosion protection in industrial environments is not a secondary aspect of the logistics process, but a critical factor that directly impacts product quality, costs and customer satisfaction. Nevertheless, it is common to find packaging systems that are not properly designed for the actual conditions faced by metal parts during storage or transport.
In many cases, corrosion is not caused by a fault in the material used, but by errors in the packaging design. These are technical faults, but also strategic ones: oversimplified decisions, a failure to analyse the environment, or a failure to adapt to each specific case.
In this article
The underlying problem: treating packaging as a product rather than as a system
One of the most common misconceptions is to view anti-corrosion packaging as simply a choice of material, rather than a complete system. This approach leads to the belief that selecting VCI paper or adding desiccants is sufficient to guarantee protection, when in fact these elements only work properly if they are integrated into a comprehensive solution.
An effective anti-corrosion system must take into account a number of interrelated variables:
- Type of metal and susceptibility to corrosion
- Initial condition of the part
- Environmental conditions (humidity, temperature)
- Type of transport and duration
- Level of packaging integrity
When any of these variables is not properly controlled, the system becomes less effective, even if the material used is technically suitable.
Underestimating the impact of humidity
Moisture is the main factor that triggers corrosion, yet it remains one of the least controlled elements in many packaging processes. Often, estimates are used, or it is assumed that anti-corrosion materials will be sufficient to counteract its effects.
The problem is that humidity is neither constant nor predictable. In logistics environments, particularly in maritime transport, temperature fluctuations occur which cause condensation to form inside the packaging or container. This phenomenon creates microclimates where relative humidity can reach critical levels.
If this dynamic behaviour is not taken into account, the packaging is designed on an incomplete basis, which significantly increases the risk of failure.
Incorrect or insufficient use of desiccants
The use of desiccants is common practice, but it is not always done correctly. In many cases, they are added without a precise calculation, which reduces their effectiveness or creates a false sense of security.
The most common mistakes at this stage are:
- Failing to calculate the amount of desiccant based on the volume of the packaging
- Failing to take into account the duration of transport or storage
- Failing to take into account the initial humidity of the environment
- Using the same standard for all shipments
A desiccant has a limited absorption capacity. If it becomes saturated prematurely, it ceases to fulfil its function and the system is left unprotected. For this reason, its use must always be based on a technical analysis rather than a generic application.
Leakage issues with the packaging
Airtightness is a fundamental requirement in many anti-corrosion systems, particularly when VCI materials are used. These materials require a sealed environment to maintain the concentration of corrosion inhibitors inside the packaging.
However, it is common to find shortcomings in this regard: incomplete seals, damaged materials or designs that do not ensure adequate insulation. Even small leaks can cause the protective compounds to disperse and reduce the system’s effectiveness.
This type of fault often goes unnoticed in the early stages, but becomes critical during long journeys or in demanding environmental conditions.
Failure to prepare the items before packing
Anti-corrosion packaging does not remedy pre-existing problems with the parts. If the parts contain moisture, residues or contaminants, the risk of corrosion increases significantly, regardless of the system used.
Pre-treatment must include processes such as drying, cleaning and the removal of substances that may promote oxidation. When this stage is omitted or carried out superficially, the packaging is applied to a compromised surface.
This error is particularly significant in complex industrial processes, where parts go through various stages before being packaged.
Inappropriate selection of the anti-corrosion system
There is no single solution that works for every situation. However, it is common to use the same type of packaging in different situations without considering whether it is actually suitable.
The choice of system should be based on technical criteria. Some of the factors that need to be assessed are:
- Type of transport (road, sea, air)
- Duration of shipment or storage
- Level of exposure to moisture
- Type of material to be protected
When this decision does not reflect the actual situation, the packaging becomes ineffective and the risk of incidents increases.
Not treating time as a critical variable
Time is a key factor in corrosion protection, but it is often underestimated. Many systems perform well over short periods, but are not designed to withstand prolonged exposure.
For international shipments or long-term storage, it is necessary to make provision for:
- The loss of effectiveness of certain materials
- The saturation of desiccants
- The deterioration of packaging
Ignoring this variable may result in solutions that work in initial tests but fail in real-world conditions.
Failure to review and improve the system
A common structural mistake is to keep using the same packaging system for years without reviewing it. In an ever-changing industrial environment, this failure to update the system can lead to inefficiencies and undetected risks.
Regular reviews enable packaging to be adapted to new conditions, costs to be optimised and protection to be improved. Without this process, the system becomes inflexible and loses its responsiveness.
How to avoid these mistakes when using anti-corrosion packaging
To reduce risks and improve the system’s effectiveness, a technical and comprehensive approach is required. Some key factors are:
- Assess the actual conditions of the logistics environment
- Design packaging as a system, not as a product
- Select materials on a case-by-case basis
- Control humidity and prevent condensation
- Review the implemented solution on a regular basis
This approach enables packaging to be transformed into a strategic tool within the industrial process.
Corrosion protection starts with the design of the packaging
Most corrosion problems in industrial settings are not caused by material failures, but by errors in the packaging design. They are often linked to a failure to analyse actual conditions, overly standardised decisions, or solutions that do not address the specific risks associated with transport or storage.
An effective anti-corrosion system does not depend on a single factor, but rather on how all the factors involved in protection are integrated: the material chosen, moisture control, airtightness, exposure time and the characteristics of the component. When this approach is implemented correctly, the packaging ceases to be a weak point and becomes a reliable and optimised protective tool.
Identifying and rectifying these errors not only helps to reduce incidents and costs associated with corrosion, but also improves the overall efficiency of the logistics process and product safety throughout the supply chain.
Would you like to assess whether your packaging system could be optimised?
If you would like to assess how an anti-corrosion solution can be integrated into your production lines, at Inviker we offer expert advice and samples tailored to each application. We can help you determine which solution best suits your processes, technical requirements and logistical conditions.