Application: Spray wood and furniture with coatings, wood stains and functional coatings
What this application is about
The right solution starts with the entire process rather than an individual gun. Spray pattern, nozzle design, material pressure, delivery, component movement and cleaning must be considered together to keep the application stable and repeatable.
Purpose and benefits of the coating
The application mainly concerns solid wood, veneer, MDF, HDF and other wood materials. The required effect occurs only when coating material, substrate, layer thickness and subsequent drying or curing fit together. The spraying process must therefore be adapted to the concrete material system and the real production conditions.
Alongside surface quality, material consumption, cleaning effort, system availability and reliable repeatability also matter. A sound technical solution therefore combines controlled atomisation with a stable material supply that is easy to regulate.
What matters with the application
Even small fluctuations in material pressure, viscosity, distance or movement control can change the coating visibly or functionally. Typical requirements include:
- different absorbency and pore structure
- uniform colour with wood glazes and stains
- clean edge cover for profiles and milling
- Avoidance of runs and dry spray zones
- Adaptation to water and solvent-based materials
- cost-effective application to individual parts and series
Consider absorbency and surface construction of wood
Wood and wood materials differ in porosity, humidity and absorbency. For this reason, stains, primers, fillers, varnish or clear lacquer react differently depending on the type of wood and the grinding condition. The spraying technique must allow an even application without overburdening edges, pores or profile areas.
With MDF and strongly absorbent edges, a separate coating structure can be required. In automated lines, spray webs, workpiece speed and drying are coordinated.
- Wood moisture and sanding image
- Suction capacity of surface and edge
- Viscosity and solid state content
- Overlapping in large areas
- Color change and cleaning for small batch sizes
Spraying technology and material supply from Krautzberger
Krautzberger treats application and material supply as a connected system. Depending on the task, manual and automatic spray guns, suitable air and material nozzles, material pressure tanks, diaphragm pumps, pump and lifting stations, and material pressure regulators can be combined.
In automated processes, spray guns can be integrated into mounts, lifting devices, axes or robots. Material changeover valves and flushing equipment support applications with several colours or media. The specific selection depends on viscosity, solids content, application quantity, cycle time and component geometry.
For fine surface finishes, various XLINE nozzle combinations and spray patterns are available. With highly viscous, abrasive or sedimenting media, sufficiently large flow cross-sections, suitable material combinations, agitators and pressure-stable delivery become more important.
The focus is on hand spray guns and automatic spray guns with a wide range of nozzles, material pressure vessels, pumps, agitators and material pressure controllers. The technically and economically suitable combination is selected for the specific medium, components and required production output.
Typical applications
The application is used in different industries and component groups. Typical examples are:
- Furniture fronts and body parts
- Doors, frames and mouldings
- Chairs, tables and fittings
- Kitchen and bathroom furniture
- Interior fittings and decorative elements
- Parquet, profile and special components
Process integration and automation
Flat parts can be coated with several spray stations in continuous systems; complex furniture parts often require variable angles or manual rework. Change of material and colour should be taken into account in plant planning.
In addition, component feed, extraction or ventilation, cleaning, media change and accessibility for maintenance work must be taken into account during the system integration. This keeps the process stable not only in the pattern run, but also in everyday production.
Benefits for your production
- even colour and gloss results
- good coverage of edges and profiles
- Flexible processing of various wood coatings
- reduced material consumption due to suitable spray pattern
- Reproducible serial quality
- Scalable from manual workstation to painting system
Process design at the Krautzberger technical centre
Liquid media and coating materials with similar names can differ considerably in viscosity, solids content, solvent base, wetting and drying. A reliable choice of spray gun, nozzle and material supply should therefore be made using the original material and a representative component.
The original wood is used to test suction behaviour, colour tone, course, edge cover and drying.
On this basis, the spray pattern, material quantity, pressure, distance, movement and cleaning sequence can be defined. The result is an application solution suited to the medium, the geometry and the intended production process.
Related products
All products
Find the right application solution together
Looking for a spray gun, an automatic spray gun or a complete material supply for this process? Krautzberger helps you select and design suitable spray technology, nozzle configurations, delivery and regulation.
Contact Krautzberger to discuss your medium, component, production volume and desired result. Together, we assess how the process can be implemented safely and economically.
Industries for this application
Wood surfaces must withstand moisture and stress while showing colour, gloss or the natural grain. For furniture and other wooden parts, the material and desired appearance determine whether a stain, clear coat or coloured coating is suitable.
