Aplicación: Spray protective and functional coatings evenly onto flat glass
De qué se trata esta aplicación
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 float glass, single-pane and laminated safety glass, coated glass and technical glass panes. 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:
- even application on large, visually sensitive surfaces
- Avoidable strips and overlap zones
- Controlled layer thickness at edges
- clean substrate surface without dust and residues
- Synchronisation with transport speed
- Avoiding overspray on the back and system environment
Coating of large surfaces without visible transitions
In the case of flat glass, several spray strips over large widths must overlap so that no stripes or clouds remain visible. Glass cleaning, dust-freeness and surface pretreatment significantly influence wetting. Transparent or thin functional layers are particularly sensitive to fluctuations.
spray width, number of appliances and glass speed are jointly designed in continuous systems. Edge areas can be specifically spared or coated separately.
- constant wet layer over the entire width
- uniform overlap of multiple spray patterns
- clean glass surface
- Control of edges and edge zones
- coordinated drying or curing
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 automatic spray guns with wide, homogeneous flat jets, traversing axes or multiple spray stations, material pressure regulators, pumps and clean material containers. 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:
- Architecture and facade glass
- Automotive and transport glass
- Furniture and interior fittings
- Displays and cover lenses
- Safety and protective glass
- Decorative and functional coatings
Process integration and automation
For large panes, spraying web and overlap are precisely matched to width and belt speed. For both sides or partial coating, masking and component handling are part of the system concept.
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 coating of large glass surfaces
- reduced strip and cloud formation
- precise adjustment to belt speed and width
- low material loss
- Flexible full and partial surface coating
- Integration into existing glass lines
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 discs are tested under suitable lighting for homogeneity, edge structure, wetting and optical 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
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
Flat glass can be coated over its entire surface or only in selected areas, for protection, easier cleaning or decoration. For glass products and building components, size, geometry and subsequent use determine the requirements for coating application.
