What’s the best finishing cycle for cabinet doors?

Cabinet doors may appear to be simple products, but you need to get the process right to end up with a quality product.
Sanding the edge is the first step in the process, either done with a sanding wheel or an abrasive belt.

This is followed by vacuum application of the base coat on the edge using our Smartedge, edge-coating solution. We then run a series of 2 vacuum applications of a white UV coating using a total of 180 g/sqm followed by semi-curing in a UV oven with one intermediate Gallium lamp for each of the first 2 stages. A third coating layer of 90 g/sqm is then applied with final curing in an oven using a Gallium and Mercury lamp. The process ends with automatic sanding by means of a sanding wheel and an abrasive belt.

The second phase starts when the panels are spray coated using iBotic, our high-capacity Cartesian spraying robot. iBotic will also handle J-Pull profiles as well as standard flat panels. This machine sprays both the flat surface and edges, obtaining a high-quality finish. After applying 140 g/sqm of a polyurethane-based pigment, the cabinet doors are dried completely in Omnidry, our flexible vertical oven which can be fitted with the optional FLEXPRO function catering for different sized pieces, also with different thicknesses, automatically.
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Spray coating is not the only solution. Have you heard of Smartcoater PRO?

In the case of raised panels such as kitchen cabinet doors, or any substrate with less than a 10 mm groove, there is no reason why the coating process cannot be done on Smartcoater PRO, providing it is equipped with one of our latest innovations, the soft rubber application roller. Not only will this special application roller achieve the goal, but combined with other exclusive features present on this latest-generation roller coater, the results will be consistent.

These features include a special stabilising structure for the application roller achieved using 4 screw jacks. This places firm pressure on the panels transiting through the machine, and thanks to the pneumatic floating system (another exclusive feature which can be fitted to Smartcoater PRO) the application head moves according to irregular panel geometries, even compensating for poorly calibrated panels.
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Coating the face of the raised panel with this technique has a number of advantages. For example, it shortens the coating process by:
  • ensuring superior transfer efficiency vs. spray coating
  • avoiding the need for sanding between base coats
  • reducing the handling operations
It also ensures economies and speed:
  • reduced lacquer and solvent consumption
  • shorter lead times
In a series of steps involving Smartcoater PRO for the base coat (35 g/sqm) and UV ovens with one Gallium lamp for gelification and second run on the roller coater followed by drying under 2 Gallium Mercury lamps, the panels are then sanded and spray coated for the finishing layer as described above, using our Mito or iBotic spray coating machines.

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