The role of a primer in industrial processes

Industrial paint for metal is not just a decorative coating: it is the first line of defence against corrosion, chemical agents and adverse environmental conditions. Choosing the wrong primer can lead to loss of adhesion, premature oxidation and high maintenance costs.

Therefore, choosing the right primer is essential to ensure durability, resistance and good preparation of metal surfaces. This guide shows you what factors to consider and our recommended system for reliable and versatile results.

Key factors before choosing a primer for metal

1. Type of surface

Each metal or substrate has different characteristics. Surfaces such as aluminium, galvanised steel, PVC or glass require specific primers to ensure good adhesion.

2. Exposure conditions

Indoor: less demanding, but a durable system is still recommended.
Outdoor: exposure to UV rays, humidity or marine environments that accelerate corrosion.
Industrial environments: contact with oils, chemicals or frequent abrasion.

3. Durability and maintenance

A good paint system not only provides better protection, but also reduces repainting and maintenance costs in the long term.

Our recommendation: multi-purpose solvent-based primer

We recommend our OROPRIMER 446 multi-purpose solvent-based primer, a single-component product formulated with thermoplastic acrylic copolymers and anti-oxidant pigments, designed to offer:

Excellent adhesion on difficult-to-bond substrates (aluminium, galvanised steel, PVC, ceramic or glass). Effective corrosion protection for iron and steel. Fast drying, optimising preparation times. Easy to sand, leaving the surface ready for any type of subsequent paint. Universal compatibility, can be combined with 1K and 2K finishes according to project requirements.

Why it works perfectly with 1K and 2K systems

1K systems: provides a uniform and firm base that improves adhesion and ensures protection in single-component finishes.
2K systems: enhances the durability and resistance of two-component paint, especially in demanding industrial environments, without compromising the adhesion or flexibility of the top coat. This versatility allows a single product to function as a reliable base for different projects, simplifying the choice of finish according to the needs of the painter or the project.

This versatility allows a single product to serve as a reliable base for different projects, regardless of the finish required, simplifying the needs of the painter or the project.

Common uses

• Metalwork and exterior structures: doors, railings and balustrades exposed to the elements.
• Industry and machinery: metal parts requiring initial protection.
• Demanding industrial environments: surfaces in contact with oils, chemicals or constant abrasion.
• Maintenance and repair: rusted or complex surfaces that need reliable anchoring.

Practical application tips

• Prepare the surface: remove dust, grease and loose rust.
• Apply thin and even layers to ensure proper drying and good adhesion.
• Allow sufficient drying time before applying any 1K or 2K finish.
• Choose the finish according to your needs, bearing in mind that the primer provides a versatile and compatible base.

Conclusion

Choosing the right industrial primer is a strategic decision. Our OROPRIMER 446 primer offers:

Corrosion protection and optimal adhesion.
Compatibility with 1K and 2K finishes, adapting to different needs.
Uniform and durable results in demanding industrial environments.
With this recommendation, any industrial paint system starts with a solid, flexible and reliable base, ready for different types of finishes depending on each project.

If you need personalised advice, our technical team can help you define the ideal combination for your project.

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