© RIWAG Türen AG
Windows & Doors

Doors open for automated painting

The four managing directors of RIWAG Türen AG in Arth, Canton Schwyz, had one goal: the perfect surface. They searched for solutions to this goal and found two: an automated spray painting system and the UV paint system from ADLER.

© RIWAG Türen AG
© RIWAG Türen AG
© RIWAG Türen AG

One work step, all possibilities

When you enter the production halls of RIWAG Türen AG, there is little to remind you of the old Master Eder flair that prevailed when the joinery was founded in 1943. Everything sparkles, no wood shavings are on the floor, the sounds of large robots fill the hall. Only the pleasant smell of wood immediately reveals that the ultra-modern facilities process the most natural of all materials. The company's latest automation success is a painting system that does it all. "We have mastered great challenges such as automated stacking and destacking, integrated grinding and connecting different paint cycles in one work step. The system is also fully integrated into the automated RIWAG data flow," explains Marco Contratto, co-owner and head of development/information technology, proudly. A barcode scanner reads the data into the system. All details, from the grinding process to the use of paint and the throughput time of the individual doors, are taken into account. The number of units is always one, which guarantees the highest possible flexibility. Because different paint systems are used for the interior and exterior, the unit is mainly used to coat the interior surfaces. The painting of the exterior surfaces is still done manually by the employees.

Target achieved

"We planned and implemented the project with the German machine manufacturer Robert Bürkle GmbH. Soon it was clear to everyone involved how complex the task would be", says Contratto. But after always looking for solutions and not for errors, the project was a complete success. Only the original paint system simply did not want to work on the new unit. That's when ADLER came into play, and it soon became clear: Europe's most modern water-based paint factory produces the right paints for this ultra-modern system. Now RIWAG coats with the water-based UV paint system  ADLER Pigmolux. Thanks to UV curing, the parts can be stacked immediately. This saves a lot of time, enabling RIWAG to deliver doors and frames to customers even faster. The system thus fulfils all previously defined objectives to the customer's complete satisfaction. Marco Contratto has many answers to the question of what the effort has meant: "In addition to short delivery times, the higher capacity and flexibility and the possibility of rapid colour change, the system impresses with the consistent, stable quality of the surface. The reject rate is practically zero." The fact that ADLER's UV paint is water-based and therefore ecological makes it perfect. RIWAG Türen AG has thus achieved its goal: it offers its customers the perfect surface.

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