Pre-treatment systems

Chemical Pretreatment Systems for Powder Coating

– GSB and QUALICOAT compliant – tailored to customer requirements

Chemical pretreatment is an essential process step for high-quality and durable powder coatings. It forms the basis for optimal paint adhesion and long-lasting corrosion protection. We offer chemical pretreatment systems that can be designed to comply with GSB and QUALICOAT standards and meet the highest industry quality requirements.

3-Zone and 7-Zone Pretreatment Systems

Depending on the quality requirements, component type, and corrosion protection class, different zone concepts are used:

3-Zone Pretreatment System

A 3-zone system is particularly suitable for simple applications and internal components with moderate requirements:

Degreasing / Cleaning
Rinsing Zone
Passivation or Conversion Coating

This compact design offers advantages such as a small footprint, reduced investment costs, and low media consumption.

7-Zone Pretreatment System

For demanding corrosion protection requirements, outdoor applications, and architectural components, a 7-zone system is used, as is often required for GSB- and QUALICOAT-certified coating processes:

Degreasing
Rinsing 1
Rinsing 2 (Cascade Rinsing)
Activation
Phosphating or Phosphate-Free Pretreatment Process
Rinsing / Deionized Water Rinsing
Passivation

This zone concept ensures maximum process reliability, consistent coating quality, and excellent corrosion protection.

GSB and QUALICOAT Requirements

Our chemical pretreatment systems are designed to meet the technical requirements for GSB approvals and QUALICOAT coating processes. These include:

Defined residence times in the individual zones
Precise control of temperature, pH, and concentration
Multi-stage rinsing technology to prevent carryover
Documentable process parameters for audits and quality assurance

This makes our pretreatment systems ideal for coaters who must meet the highest quality standards and international norms.

Precise Process and Measurement Technology

Modern measurement and control technology, as well as automated dosing systems, are crucial for reproducible pretreatment quality:

Temperature control of the treatment zones
pH and conductivity measurement
Automatic chemical dosing
PLC-based system control with visualization

This technology ensures stable processes, minimized chemical consumption, and high system availability.

Energy and Resource Efficiency

Through optimized spray systems, cascade rinsing, heat recovery, and demand-based heating, energy and water consumption are significantly reduced. The systems meet current environmental regulations and support a sustainable coating process.

Designs and Integration

Our chemical pretreatment systems are available as:

Continuous flow systems for production
Batch systems for flexible production processes
Spray, dip, or combination systems

All systems can be seamlessly integrated into new or existing powder coating lines.

Customized Pretreatment Systems for the Highest Quality Standards

Chemical pretreatment systems are custom-designed and manufactured. Whether 3-zone or 7-zone systems, phosphated or phosphate-free – we develop economical, durable, and reliable solutions as the optimal basis for GSB- and QUALICOAT-compliant powder coatings.