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The challenge

Our customer “Dürr AG”, a leading producer of coating technology, has developed a new spray head, which is capable of applying paint without any overspray. It brings many advantages for industrial coating processes; therefor Dürr already established the spray head at many of their customer’s production lines.

In order to deliver a fitting paint for this specific spray head, paint manufacturers now have to tests their coating products in combination with the spray head, standardised substrates, normally flat metal sheets, in a reproducible and highly precise movement.

The movement ideally simulates the work of a robot at the coating line but in a controlled laboratory environment.

Systec had already built testing machines for water-based paints. However, with the need of testing the whole variety of paints with flammable and even explosive solvents, a more advanced and secure machine was missing to date.

The solution

Systec managed to design an ATEX certified testing machine, capable of handling two different paints and solvents. Utilizing Systec’s controllers, amplifiers and motors in combination with the revolutionary overspray-free paint head, it is a perfect example of integrating an application for laboratory testing purposes. Manufacturers are now able to define their test-programs and parameters to find the best formula and settings for their coating products. For example, lying or standing substrates can be coated line by line with stripes with a defined or no overlap. Pauses between forth and backward movements can be programmed to simulate the processing of bigger parts, and the order of stripes with different or same direction can be changed. To compare different formulas of paints, the machine recreates the exact same movement with high precision every time a program is run.

To achieve ATEX certification, Systec’s engineers designed the testing cell containing paint bearing tubing and the operational printing head airtight and undergoing a constant flow of clean air. The evenly applied draft of air reduces the concentration of solvents and ultimately draws the solvent vapour out of the testing machine into the laboratory’s contaminated air treatment and filtering.

All surfaces are easy to clean stainless steel and safety glass.

It meets precisely the use case of Dürr and paint manufacturers and has been already sold many times.

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Main characteristics

  • Based on a rigid automation base
  • Testing fresh formulated coatings with new overspray free head
  • Simulates robotic in line coating
  • Safe to use with flammable solvents
  • ATEX conformity class 2
  • For huge, flat test objects/ sheets
  • Horizontal or vertical application
  • separate coatings and solvents in two paths, interchangeable
  • Multiple testing programs and parameters for changing demands of OMS’ laboratories

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