Abstract: The present invention relates to an apparatus for the treatment of a chemical product applied to surfaces of items. The apparatus includes: a tunnel chamber, a conveyor belt element, first injection means configured to supply an inert gas in the tunnel chamber, and radiation means configured for the treatment of the chemical product. Furthermore, the apparatus includes a suction chamber in fluid communication with the tunnel chamber, and suction means fluidly connected to the suction chamber. Specifically, the suction chamber is in fluid communication with the tunnel chamber through a plurality of through ducts formed on a wall element separating the chambers, and the conveyor belt element is provided with a plurality of through openings which pass through its thickness.

Abstract: Device for coating, preferably for painting, the main surfaces of rigid panels with liquid products includes a substantially horizontal support surface to support a rigid panel and a painting head placed orthogonally to the direction of relative movement and above the support surface. The painting head has, in sequence on its face facing the support surface, a dispensing outlet for a liquid product and a suction inlet for the liquid product so as to create a veil of liquid product. The first side surface of the face is configured so that the distance d4 between one of the points around the first end of the dispensing outlet and the support surface is smaller than the distance dx between any other point belonging to the face and the support surface.