Pretreatment systems in Swiss quality

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We design pretreatment systems individually for each customer, depending on the workpiece, material and coating requirements. The correct surface pretreatment system is the foundation for a durable, high-quality coating. Without proper pretreatment, the coating cannot achieve optimum adhesion. As every application has specific requirements, careful planning is essential. We manufacture pretreatment systems as standalone installations or as part of a complete powder coating or liquid paint system. To ensure the most economical solution, we work closely with chemical suppliers and wastewater treatment specialists.

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What is pretreatment?

Pretreatment is the process carried out before the actual coating operation. It is essential for ensuring excellent coating adhesion by preparing a clean, contaminant-free surface. Thorough surface pretreatment is a key factor in achieving a durable, high-quality finish. Depending on the application, the pretreatment process includes several steps.

Cleaning: Surface cleaning removes dust, grease, oil, rust, dirt and other contaminants using washing systems, chemical cleaning agents or other suitable cleaning methods.

Degreasing & Pickling: Degreasing is particularly important for oily surfaces, as grease significantly reduces coating adhesion. Degreasing agents remove oils and lubricants from the workpiece. Where required, a pickling stage can also be integrated to remove oxide layers, scale or anodized coatings.

Passivation: During passivation, a protective conversion layer is applied to improve corrosion resistance and provide optimum adhesion for the subsequent coating.

Rinsing & Drying: Following pretreatment, all cleaning agents and chemical residues must be removed thoroughly before the workpiece is dried and prepared for the coating process.

Pretreatment systems are used in a wide range of industries, including the automotive, furniture, electronics, household appliance and metal processing industries.

We manufacture a wide variety of pretreatment systems, including spray pretreatment systems, dip pretreatment systems and manual cleaning systems. We also develop customized pretreatment solutions tailored to the specific requirements of each customer.

Pretreatment systems from e. Luterbach

Spray pre-treatment systems

Spray pre-treatment systems are the first choice in many branches of industry. We can design spray pre-treatment systems as cycle or continuous systems. Mechanical support ensures fast process times, which also increases the efficiency of your company. Depending on the type of system, different substrates and different programs are possible. Further advantages are the adjustable pressure, the low liquid volume as well as low temperatures and chemical concentrations. The pre-treatment systems can be seamlessly integrated into the overall process. Our modular system allows us to offer you customized solutions. We differentiate between four types of spray pre-treatment systems.

Immersion pre-treatment systems

Dip pre-treatment systems are an alternative to spray pre-treatment systems. The dip system does not produce any spray shadows, as the interior spaces are also wetted. Pickling processes are therefore more effective. Various substrates such as steel and aluminum can be processed in dip pre-treatment systems. In addition, different programs – from light to heavily soiled – and the integration of dip coatings – KTL, ATL or auto-deposition processes – are possible. The dip pre-treatment system has a low energy consumption. We offer seamless integration into the overall process, in which the hangers are automatically transferred to the conveyor system.

Why should surfaces be pretreated?

Proper surface pretreatment is essential for achieving a high-quality, durable coating. Preparing the workpiece according to the material, application and performance requirements has a significant influence on the quality, durability and functionality of the finished product.

 

Advantages of pre-treatment systems:

  • Improved Adhesion: Thorough pretreatment creates the ideal surface for the coating to adhere securely. This results in a more uniform, durable finish with improved resistance to chipping and peeling.
  • Corrosion Protection: Pretreatment improves corrosion resistance by creating a protective layer that helps prevent the penetration of moisture and other corrosive substances. This is particularly important for metal components.
  • Improved Coating Quality: Pretreatment removes contaminants and creates a uniform surface structure, allowing the coating to be applied evenly. The result is a smooth, consistent and high-quality finish.
  • Extended Service Life: Properly pretreated surfaces provide greater durability and resistance to wear, ensuring a longer-lasting coating and improved protection throughout the product’s lifecycle.
  • Environmentally Friendly: Modern pretreatment systems support sustainable manufacturing by reducing environmental impact. Depending on the process, wastewater and chemicals can be recycled, treated or disposed of in an environmentally responsible manner.

e. Luterbach AG – Your Partner for Pre-Treatment Systems

e. Luterbach AG is your reliable and experienced partner for pre-treatment systems in painting and coating processes. In addition to standard solutions, we also offer the planning and construction of customized pre-treatment systems.

Get in touch with us – we look forward to bringing your project to life!

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e. Luterbach AG

Plant engineering for the painting industry

 

Mülacher 10, CH-6024 Hildisrieden