Infrared drying and uv curing in industrial coating
Infrared drying and uv curing in industrial coating are among the most efficient processes in industrial coating technology. IR heats the surface in a targeted and uniform manner - ideal for water-based systems and demanding coating thicknesses. UV cross-links coatings in fractions of a second and immediately ensures resilient surfaces.
In combination, even complex material and coating structures can be reliably processed - energy-efficient, fast and stable.
Infrared dryer VEN DRY IR | UV dryer VEN DRY UV
Modular drying and curing modules
The VEN DRY IR infrared drying and VEN DRY UV curing systems are modular drying and curing modules that are precisely tailored to the line layout, component geometry and desired cycle time. The IR modules enable precise temperature control, while the UV modules provide defined curing profiles for immediately loadable surfaces. Both systems can be flexibly combined, integrated to save space and fully automated - for defined drying profiles and consistent surface quality with low energy requirements.
To the IR and uv curing systems
Infrared drying: How it works
IR drying is based on electromagnetic radiation that is absorbed directly by the material. The result: fast reaction times, uniform heating and high process reliability - even with sensitive substrates and dense paint layers.
IR radiant energy
- Direct energy input
- Process starts immediately
- Uniform heating
Absorption behavior
- Wavelength adapted to the material
- Efficient energy input
- Particularly suitable for water-based paints
Temperature control
- Precise control
- Protection of sensitive components
- Reproducible results
Material compatibility
- Gentle heat application
- Suitable for complex geometries
- High drying stability
Energy efficiency
- Minimal losses
- Precise entry
- Shortened process times
UV curing in industrial coating: How it works
UV curing in industrial coating cross-links the coating within seconds using precisely defined UV wavelengths. The reaction is triggered by photoinitiators and ensures immediately resilient, highly resistant surfaces.
UV spectrum
- Spectrum matched to photoinitiators
- Stable reaction control
- Clean crosslinking
Irradiance
- Defines the curing time
- Short cycles due to high intensity
- Reproducible quality
Distance & focus
- Even energy distribution
- Ideal for profiles and edges
- Reliable curing of complex geometries
Cross-linking reaction
- Immediate activation
- High scratch & chemical resistance
- Directly loadable surface
Temperature management
- UV LED with minimal heat input
- Protection of temperature-sensitive materials
- Stable curing process
Advantages of infrared drying and uv curing in industrial coating
The combination of infrared drying and uv curing in industrial coating enables precise, efficient and highly flexible coating processes - ideal for automated lines.
- High cycle rates with stable quality
- Energy-efficient radiation processes
- Suitable for complex geometries
- Directly loadable UV surfaces
- Gentle IR heating
- Reproducible series processes
IR and UV: possible combinations
Infrared drying and uv curing in industrial coating are most effective when they are precisely matched to the material, coating structure and line speed. Depending on the process sequence, both processes can be used individually, sequentially or as a hybrid solution.
- Hybrid IR + UV for water-based systems
- IR + convection for targeted preheating
- UV + cooling for immediate further processing
- Integration into robot lines
- Integration into complete Venjakob process solutions
When is IR drying the better choice - and when is uv curing in industrial coating?
IR is suitable for voluminous coatings, geometries that are difficult to access and applications in which the energy input should be deep into the coating layer. UV curing in industrial coating shows its strengths when UV-reactive systems are used and immediately loadable surfaces or extremely short cycle times are required.
How do IR and UV affect energy consumption and process costs?
IR only heats the component or coating, not the entire oven chamber - this reduces start-up times and energy losses. UV curing in industrial coating scores with extremely short process times and enables compact system layouts, which can reduce investment and operating costs.
What role do substrate, layer thickness and pigmentation play in IR and UV?
Substrates absorb IR radiation to varying degrees - this influences temperature windows and heating times. Pigments and fillers define how deeply IR and UV radiation can penetrate. Highly filled or heavily pigmented coatings therefore often require adapted wavelengths and outputs.
How can IR or UV technology be integrated into existing coating lines?
Compact IR and UV modules can usually be integrated into existing conveyor lines. The decisive factors are the available installation length, existing exhaust air and safety concepts as well as coordination with existing convection or gas ovens. Hybrid zone concepts are also possible.
What are the limits of IR drying and uv curing in industrial coating?
Limitations arise with sensitive substrates, complex geometries with shadow areas or coating systems that are not UV-reactive. In such cases, adapted reflectors, alternative wavelengths or combinations with hot air drying are used.
How do I ensure process quality and reproducibility in IR and UV processes in the long term?
Regular UV dose measurement, temperature and surface sensors and clear documentation of recipes, output levels and line speeds create transparency and ensure reproducible results. This is also important with regard to subsequent complaints.
What are the advantages of combined IR-UV solutions for water-based systems?
IR quickly reduces the water content and prepares the surface for uv curing in industrial coating. This reduces the risk of bubble formation, film formation becomes more stable and the line speed can be significantly increased - even with demanding water-based coatings.
We would be happy to advise you
Would you like to find out more about our systems, processes or solutions - or do you already have a specific project in mind? Our contacts are on hand to provide you with expert advice, technical expertise and many years of experience.
Gert große Deters
Business Unit Manager for General Industry & Automotive
Telephone: +49 5242 9603-184E-mail: ed.bokajnev@sretedessorg.treg
Christian Streit
Head of Wood | Building Materials Division
Telephone: +49 5242 9603-162E-mail: ed.bokajnev@tierts.naitsirhc
