SURFACE SPRAYING

This is the usual method for the automatic application of stains, sealers and topcoats onto flat and surface-profiled workpieces with simultaneous finishing on the edges. This system allows all workpieces shapes to be coated, although at a moderate feed speed (max. about 25 feet per minute), with low solid contents (wich can, however, be increased by hot spraying) and with some waste of material.

Surface spraying machine


This spray guns move either in a carousel rotation or in a straight line crosswide to the direction of feed. The number of guns in the machine is dependent on:
- the required application quantity,
- the required feed speed,
- the shape of the workpieces,
- the necessity to apply different finishing materials separately.
If, for example, staining and coating is being carried out using a rotary technique, a number of the spray guns can be used for applying the stain, and the rest for applying the sealer of topcoat.

Spraying machine
Spraying robots


This machine, in widespread use throughout Italy permits the application of large amounts of base coat with excellent results. The second application roller which works in reverse rotation applies the larger quantity of material on the front edge and flattens the thickly spread film smoothly. Thanks to a special device, the built up of material on the front edge is avoided. When the "reverse" unit is switched off, this universal machine can be used to carry out all the application work which is possible on the differential roller coater.

Spraying robot
Stain wiping
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The stain wiping machine is placed after the stain spraying machine and used for processing profiled workpieces. Two rotating wiping brushes arranged diagonally to the feed direction distribute tha stain evenly over the surface.