Sanding machines from Kundig are at home in all areas of woodworking. However, we also supply numerous other industries with our solutions for surface processing. Thanks to our great willingness to develop special solutions and the high flexibility of our engineering department, we have many years of experience in the processing of almost all materials.
With sanding machines from Kundig, plastics of all kinds are processed in hundreds of companies worldwide. These are often fibre reinforced composites, such as glass fibre composites. When calibrating these materials, very precise tolerances can be maintained - even for bottom-top sanding applications and when sanding very large panels.
The lightweight material carbon places high demands on the robustness of the sanding machine and its extraction technology. Using sanding machines from Kundig, the high tolerance requirements of aviation, automotive industry, medical technology and sports equipment manufacturers are met on CFRP (carbon fibre reinforced plastic).
Special case: brake discs: One example of use is one of the leading manufacturers of automotive high-performance brake systems, who uses our wide belt sanders to sand both brake discs and friction linings made of extremely abrasive silicon carbide. This is done at very high throughput rates and with years of use. Aircraft brake discs and clutch friction linings of racing cars are also processed on Kundig sanding machines.
Laminates are either calibrated to thickness with our sanding machines or roughened for later production steps. The tolerances during calibration are in the range of +/- 0.005mm. The requirements for High Pressure Laminates HPL and Continuous Pressure Laminates CPL are the same. With CPL, however, there is the additional requirement that the sanding machine must run absolutely synchronously with the upstream laminate press, as these are non-flexible endless workpieces.
When sanding veneer, there are a number of applications that require special processing.
Of course, sanding machines from Kundig are also suitable for sanding lacquer up to high gloss applications. Thanks to highly developed segmented pad control technology, our patented oblique sanding technology as well as our selection of cross sanding units, our machines are suitable for all applications in this field.
Application example: In the field of high gloss there is probably no more demanding discipline than piano gloss finish. And the highest form of enhancement in this area? Probably the highest quality concert grand pianos in the world. We delivered a Flash lacquer edge sanding machine to just such a manufacturer, as well as a high-gloss wide belt sanding machine with our Hg unit and 1900 mm working width. This enables the mechanical production of a high-gloss effect, which was previously only possible manually and with a great deal of time.
CNC sanding technology is another innovation from Kundig. This allows contouring of work pieces with a repeat accuracy and speed that is unattainable with manual sanding or milling. The technology has proven itself in musical instrument construction (e.g. resonance chamber amplification of guitars) and especially in the production of skis and snowboards.
The change in quality requirements does not stop at timber construction. A simple planing of visible surfaces is often no longer sufficient. Due to their high stability and solid construction, even the standard version of Kundig sanding machines are well suited for carpentry applications with high loads and have proven themselves over decades. The machine chassis can easily cope with a good 1000 kg workpiece weight and a passage height of up to 500 mm (in special cases even more) allows even the thickest beams or purlins to be sanded. The return function prevents heavy workpieces from having to be lifted out of the machine during several sanding operations by simply reversing the feed. A number of unit options are also available for producing a brushed or rough sawn effect.
Sanding of cork works very well. An example of application is one of the largest cork product manufacturers, which processes cork underlay webs between 0.5mm and 20mm thick on our wide belt sanding machines. The cork is fed into the machine from a spindle. Winding and unwinding must be perfectly synchronized with the sanding process. The tolerances in this case are +/-0.02mm over a working width of 2200 mm.
Leather is also processed on Kundig sanding machines. Applications are roughening and calibration. Both single pieces and endless workpieces (winded and unwinded from spindle) can be sanded.
We also have experience in sanding rubber. Both endless rubber belts and surfaces can be sanded. For the belts a special tensioning device is necessary, for surfaces we can provide special sanding unit technology.
Do you have a particular challenge in processing your surfaces? A special material or a special application? Contact us without any obligation and discuss the matter with our sanding experts.