Application: Finish watch and luxury-goods components with very fine 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 metal, plastic, glass, ceramics, wood, leather and composite 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:
- very fine spray patterns and very small quantities of material
- visible faults on glossy or polished surfaces
- sharp masking limits
- frequently changing colors and effect coatings
- gentle component handling
- high demands on cleanliness and reproducibility
Small components with highest optical requirement
Watch, jewellery and luxury-goods components are often processed in small batches using high-quality coating materials. Visible surfaces, edges and fine structures must be coated evenly, while threads, bearing seats and sealing surfaces remain uncoated.
Low dead volume and quick cleaning are important because colours and effects often change and only small quantities of material are needed.
- very fine and reproducible atomization
- precise sections and masks
- Low material consumption
- fast change of high-quality media
- manual samples and automated small series
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 airbrush and fine spray gun, small material cups or pressure vessels, finely tuned nozzles as well as compact automatic spray guns and circular devices. 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:
- Watch cases, dials and bracelet elements
- Jewelry and accessory components
- Writing instruments and design objects
- Perfume and cosmetic packaging
- High-quality fittings and controls
- Samples, special editions and small series
Process integration and automation
Manual workstations offer flexibility for individual items. Recurring small series can be stabilized with brackets, turntables and programmed spray motions.
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
- high optical quality on smallest surfaces
- low consumption of high-quality media
- fast change of colors and effects
- precise partial surface coating
- Reproducible small series
- flexible combination of manual work and automation
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.
Sample parts are evaluated under control light on color, shine, course, masking edge and surface defects.
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
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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
On watches, jewellery and other high-quality components small variations in color, shine or haptics are noticeable quickly. Whether the surface is made of plastic or glass, the coating application must be tailored to material and component geometry.
