Abstract: The invention relates to flame-retardant polyurethane foam materials or polyurethane/polyisocyanurate foam materials (also referred to individually or collectively as “PUR/PIR foam materials” below) and to methods for producing PUR/PIR foam materials by reacting a reaction mixture containing A1 an isocyanate-reactive component, A2 a propellant, A3 a catalyst, A4 optionally an additive, and A5 a flame retardant with B an isocyanate component, wherein the production is carried out using an index of 80 to 600. The invention is characterized in that the flame retardant A5 contains (hydroxymethyl)phosphonate and optionally the dimer thereof as component A5.1.

Abstract: The present disclosure relates to a process and an apparatus for applying a foamable reaction mixture to a moving outerlayer, the reaction mixture being applied from discharge openings on the outerlayer, and the outerlayer moves at a speed of ?15 meters per minute relative to the discharge openings. The 510 device also comprises ?7 discharge openings.

Abstract: The invention relates to a process for producing rigid polyurethane (PUR) and polyurethane/polyisocyanurate (PUR/PIR) foams, comprising the steps of i) producing a reaction mixture containing the components A) an isocyanate-reactive component, B) a polyisocyanate component, and C) a blowing agent, and ii) applying the reaction mixture by using a system comprising at least one casting device. The casting device (100) having: a supply port (12) for feeding the reaction mixture (10), at least one discharge gap (13) extending in a transverse direction (Q) for the discharge of the reaction mixture (10), two gap-forming plates (14) arranged opposite one another, a gap space (15) extending between the gap-forming plates (14) above the discharge gap (13) in a height direction (H), wherein the reaction mixture can be introduced into the gap space (15), distributed over the length of the supply duct (16).

Abstract: The present disclosure relates to a method and a system for applying a foamable reaction mixture to a moving outerlayer, the reaction mixture being applied from discharge openings on the outerlayer, and the outerlayer moves at a speed of ?15 meters per minute relative to the discharge openings. The system also comprises ?7 discharge openings.

Abstract: The invention relates to a method and a device for applying a foamable reaction mixture to a moving cover layer (10), the reaction mixture being applied to discharge openings (400) on the cover layer (10) and the cover layer moving at a speed of ?15 meters per minute relative to the discharge openings. The device also comprises ?7 discharge openings (400).

Abstract: The invention relates to a device (100) for applying a foaming reaction mixture (600) onto a top layer (500), in particular for producing a composite element, comprising at least one casting rake (200, 260) with a tubular hollow body (210), said hollow body (210) extending along a central axis (250) and having at least two outlet openings (220) for discharging the foaming reaction mixture (600). The casting rake (200, 260) and the top layer (500) can be moved relative to each other along a longitudinal axis (510). According to the invention, the central axis (250) of the at least one casting rake (200, 260) and the longitudinal axis (510) of the movement form an angle (400, 410) of <=80 DEG relative to each other.

Abstract: The invention relates to a sandwich composite element (100) and a method for producing a sandwich composite element (100) having a first outer layer (10) and a second outer layer (11), wherein a polyurethane foam core body (12) is arranged between the first outer layer (10) and the second outer layer (11). According to the invention, a subjacent outer layer (13, 14) for mechanically stiffening the composite element (100) is arranged between the foam core body (12) and at least one of the outer layers (10, 11).

Abstract: The invention relates to a device (100) for applying a foaming reaction mixture (600) onto a top layer (500), in particular for producing a composite element, comprising at least one casting rake (200, 260) with a tubular hollow body (210), said hollow body (210) extending along a central axis (250) and having at least two outlet openings (220) for discharging the foaming reaction mixture (600). The casting rake (200, 260) and the top layer (500) can be moved relative to each other along a longitudinal axis (510). According to the invention, the central axis (250) of the at least one casting rake (200, 260) and the longitudinal axis (510) of the movement form an angle (400, 410) of <=80 DEG relative to each other.

Abstract: The present invention relates to composite elements containing, as a layer, at least one thermoplastic polymer, adhering to which, as a layer, a polyisocyanate polyaddition product is attached, and a process for the production thereof.