Abstract: In order to provide sandwich composite elements (100) having an improved fire protection behavior, the invention relates to a method for continuously producing sandwich composite elements (100) having a lower cover layer (10), an upper cover layer (11), and a polyurethane hard-foam core body (12) introduced between the cover layers (10, 11), wherein a double belt conveyor system (18) having a lower conveyor belt (19) and an upper conveyor belt (20) is provided and wherein the lower cover layer (10) and the upper cover layer (11) continuously run in between the conveyor belts (19, 20), wherein at least one glass-fiber mat (13) continuously runs in between the cover layers (10, 11) and is arranged adjacent to the inside or at least one of the cover layers (10, 11) and wherein a subsequently foaming reaction mixture (14) is applied to at least one inside of the cover Layers (10, 11) and/or to the glass fiber mat (13) in order to form the polyurethane hard-foam core body (12).

Abstract: The invention relates to a plant and to a method for producing sheets of foamed material in a continuous foam process in which the actual foaming-up profile of the foamed material is detected parallel to the conveying direction of the conveyor belt, a correcting variable for the foam process as a function of a deviation of the actual foaming-up profile from the set or reference foaming-up profile is determined and the process parameter(s) is/are adjusted to make the actual foaming-up profile correspond to the reference foaming profile.

Abstract: An apparatus for the continuous production of foamed plastics is described. The apparatus includes i) a continuous conveyor belt, and ii) a transversely reciprocating applicator device located over the belt for applying a foam-forming reaction mixture. The applicator device includes a mix head and a detachably mounted magazine plate having several openings thereon. Each opening has a casting tube connected thereto. Each casting tube has discharge holes on its underside. The plate is adjustable in such a way that the casting tubes can be connected successively to the outlet of the mixhead.