Intermediate lacquer sanding and fine dust
As a rule sanding machines are equipped at the outfeed with various dust extraction devices such as compressed air jets and a slot-shaped vacuum manifold. Following this cleaning process, however, large quantities of fine dust still remain firmly attached to the surface. Wiping the supposedly clean surfaces with a microfibre cloth finds evidence of residual fine dust. Even brush cleaning applications frequently fall short when confronted with the large amounts of fine dust created. Brushes are literally suffocated with fine dust accumulating on the surfaces of the filaments and clogging up the brushes. As any person who has ever tried to sweep snow with a broom will be well aware, after a very short time, the spaces between the bristles fill with snow and the broom slides over the snow instead of sweeping it up.
Air assisted pre-cleaning
Wandres GmbH micro-cleaning has developed the Tornado-Channel TKR 200 specifically to guarantee optimum cleaning results after sanding. At the heart of this air assisted cleaning module is a system of rotating compressed air nozzles, spinning at high speeds. The Tornado nozzles are driven and synchronized by a timing belt and the circular cleaning areas of the nozzles overlap. Positioned at equal height and very close to the product surface, the Tornado nozzles obtain an impact velocity of around 700 m/s. The air assisted cleaning application delivers entirely clean surfaces across the whole width of the Channel. Non-contact cleaning with this ventilation technology achieves top quality cleaning results, removing 90% of fine dust particles.