Abstract: Roller coater (1) for applying paint to mainly flat panels (8), comprising, in the direction of conveying of panels: a feed roller (9), preferably coupled to a contrast roller (39); an application head for applying paint, comprising an applying roller (3) and a dosing roller (11), said applying roller being preferably coupled to a contrast roller (33); a conveyor (12) for the panels (8) to be painted, preferably in the form of a closed belt conveyor; characterized in that said applying head (9) is covered by its own cover (5), said application head is covered by a preferably vertical cover (2) and a preferably horizontal cover (6), which covers are removable, said applying roller being rotatably mounted on rotation supports (15) placed at its two ends, which are disengageable from said applying roller, said applying roller being withdrawable from its working position and distanceable from said working position in the application head through a withdrawing path providing an initial translation for di

Abstract: A bridge device for measuring the thickness of mainly flat panels to be placed in a panel production line includes a frame having feet for fixing the bridge device to the floor; a plurality of supports that support measuring contact systems, which are slidable perpendicularly to the conveying direction of the panels so to adjust their positions for a transversal measure of the panels; a plurality of measuring contact systems, of which is one is for each longitudinal side of the panels; a photocell detecting the position of the panels and their lengths; blocking knobs for blocking the supports; and a device transmitting the information concerning the actual thickness of each panel to a machine for treating one of the main surfaces of the panel.

Abstract: The machine comprises a horizontal transfer line (2) formed by mutually parallel rubber-coated rollers underneath and tangent to a horizontal plane on which the sheet (L) to be processed travels, which sheet is advanced, by the rollers driven by suitable means (3, 4, 104, 5), in a predetermined and constant direction (F), two of these rollers (102, 202) being designed as opposing rollers for corresponding parallel applicator rollers (17, 19) above them, the latter rollers being driven by suitable means (18, 20) and having differing characteristics enabling them to perform two different painting operations, in one of which the applicator roller (17) rotates in the same direction and with the same speed of advance as the sheet, and in the other of which the applicator roller (19), also referred to as the reverse-type roller, rotates in the opposite direction to the direction of advance of the sheet and at an adjustable speed.