Abstract: A mixing device and method for generating reaction plastic, the mixing device including: a mixing chamber configured to mix reactive components to generate the reaction plastic; a discharge unit, including a discharge pipe connected to the mixing chamber configured to discharge the reaction plastic generated in the mixing chamber; a cleaning piston that is axially aligned with the discharge pipe of the discharge unit and is moveable into the discharge pipe to clean reaction plastic from the discharge pipe; a fluid supply device configured to provide a lubricant into the discharge unit via an outlet to lubricate the discharge unit, a control piston arranged within the mixing chamber and configured to control flow of the reactive components; wherein an axial direction of the control piston is oblique to an axial direction of a discharge pipe of the discharge unit.

Abstract: A device and method for applying a reactive mixture comprised of at least two components to a substrate (41) having a spraying device (10) capable of generating a planar, fan-shaped spray jet (18) and a round spray jet (17), and having a means for moving the spraying device relative to the substrate, wherein the spraying device is moved over the substrate in at least two stages, wherein in the first stage, a first application of material (42) is performed with reactive mixture, using the planar, fan-shaped spray jet, on the substrate, and in a further stage a second application of material (43a-c) is subsequently performed with reactive mixture, using the round spray jet, on at least a section of the material applied to the substrate in the first application of material.

Abstract: A device and method for applying a reactive mixture comprised of at least two components to a substrate (41) having a spraying device (10) capable of generating a planar, fan-shaped spray jet (18) and a round spray jet (17), and having a means for moving the spraying device relative to the substrate, wherein the spraying device is moved over the substrate in at least two stages, wherein in the first stage, a first application of material (42) is performed with reactive mixture, using the planar, fan-shaped spray jet, on the substrate, and in a further stage a second application of material (43a-c) is subsequently performed with reactive mixture, using the round spray jet, on at least a section of the material applied to the substrate in the first application of material.

Abstract: The invention relates to a spray nozzle for addition of substances into a reactive mixture, comprising a housing (12), a connection (14) provided on the housing (12) and having an inlet (16) for the reactive mixture, wherein the connection (14) can be connected to a mixing head, and the inlet leads to a mixing chamber (30), and a material outlet opening (28) at the downstream end of the mixing chamber (30). In order to add pressure-sensitive substances, it is proposed to provide at least one supply (18) for the substance to be added, which has a channel (20) that is connected to the mixing chamber (30) via at least one inlet opening, and at least one air supply (22) which feeds into the mixing chamber (30) in flow direction downstream of the inlet opening via at least one air supply opening (26).

Abstract: A nozzle for a spray head includes a nozzle body having a cavity which can be supplied with discharge material via a material feed and in which a swirl-inducing body is arranged which has arranged on it a nozzle insert with a nozzle bore via which the discharge material can be sprayed out. The swirl-inducing body has a disk or plate-shaped base on which an annular web is arranged, with the base being breached by at least one through opening which is arranged radially outside the annular web. The annular web is breached at least one point radially from the outside to the inside by at least one substantially straight or helical groove, and the swirl-inducing body and the nozzle insert are arranged in the nozzle body.

Abstract: A spray head for releasing a material made at least of two reactive components includes material supplies for providing two material components and a reciprocating cleaning and control piston Substantially provided in the cleaning and control piston is a mixing chamber which is fluidly connectable to material supplies for receiving and mixing the two material components, when the cleaning and control piston is in a first position. Fluidly connected to the mixing chamber is also a discharge channel for discharging the mixed material components. When the cleaning and control piston is moved to a second position, an air and/or liquid supply is fluidly connected to the mixing chamber so as to allow introduction of purging air or flushing agent to carry out a cleaning process.