How to Design a Paint or Enamel Coating Booth?

1. Collection of Customer Data

The design process begins with the collection of comprehensive technical and operational data from the customer. These inputs influence every aspect of the system — from sizing and automation to material selection:

• Annual production volume (units or m²/year)

• Part geometries and surface areas

  • Ideally provided in 3D formats using AutoCAD, SolidWorks, Catia, or similar CAD software.

• Part type: Cavity or flat parts?

  • Based on this classification, the robotic application strategy is defined (U-axis or X-Y-Z axis movements).

  • The number and motion axes of automatic paint/enamel robots or reciprocator systems are calculated accordingly.

• Weight of the parts

• Hanger visuals (if not available, hanger design must be developed)

• How parts are mounted onto the conveyor

• Type of paint or enamel (brand, number of colors, technical data sheet, chemical composition)

• Number of different materials (substrates) to be coated

  • This determines whether the booth and related equipment will be constructed from plastic or stainless steel.

  • If acidic or corrosive materials (like enamel) are used, stainless steel is required for booth and filtration components. Otherwise, painted sheet metal or plastic materials may be suitable.

• Available floor space in the facility (based on layout in m²)

• Special customer requirements

  • Air conditioning, humidity control, lighting, smart monitoring systems, etc.

2. Preliminary Engineering Study

Using the collected data, a preliminary layout and capacity analysis is prepared. The primary goal is to ensure the customer benefits from the most ergonomic and effective machine layout. Key design considerations include:

• Calculation of the number and positioning of electrostatic spray guns

  • This is one of the most critical design steps.

  • Determined by the manufacturer based on the total coating area (m²/year).

• Conveyor speed calculations

• Sizing of powder feeding systems

  • Number and volume of Big Bags or hoppers

• Selection and number of filters

  • Cartridge filters or sintered lamella filters, depending on the application

• Pump configuration to ensure proper powder or enamel circulation inside the booth

Based on these parameters, a technical and commercial proposal is shared with the customer.

3. Quality Expectation Review

Before finalizing the offer, the expected coating quality must be reviewed in detail with the customer:

• Required coating thickness (in microns)

• Common or known quality issues:

  • Orange peel effect

  • Back ionization

  • Yellowing effect (yellowish tint)

This ensures the system is designed to meet or exceed the customer’s surface quality requirements.

4. Budget Agreement and Rough Design Alignment

Once a mutual agreement is reached on the budget and the preliminary layout, the following steps are taken:

• Signing of:

  • Payment schedule

  • Installation and commissioning timeline

  • Customer’s technical specifications

    • Mechanical and electrical specifications

    • Occupational safety and risk assessments (if applicable)

At this point, both parties have formally agreed to proceed with the project.

5. Detailed Design Meetings

The manufacturer and the customer schedule regular design meetings to collaboratively finalize all mechanical, electrical, and automation design details. These meetings should be:

• Held without delay to avoid timeline risks

• Used to finalize all safety-critical and functional features

• Documented for traceability and version control

Once the design is technically complete and approved, the manufacturer proceeds to fabrication.

6. Manufacturing and Transparent Progress Tracking

The project proceeds according to a Waterfall Project Management approach. To maintain transparency:

• Progress updates are shared weekly, ideally with photos

• Critical milestones (fabrication stages, subassembly, quality checks) are reported

• Any deviations or changes are logged and mutually approved

7. Shipment, Installation & Commissioning

After production is completed:

• Equipment is loaded into containers and shipped to the customer’s site

• During installation:

  • The customer must introduce the site to the manufacturer’s team

  • Provide a site orientation and occupational safety training before work begins

Once installation is complete:

• Commissioning begins under the supervision of both parties

• The machine is handed over to the customer

• The project is officially closed upon successful testing and acceptance