Maschinenfabrik Hennecke Gmbh

Hennecke Gmbh

Helmut Duschanek

Hans-Michael Sulzbach

Reiner Raffel

Ferdinand Althausen

Ferdinand Proksa

Kurt Pieper

Werner Kraft

Polyurethane molded articles are produced from a flowable polyol-polyisocyanate reaction mixture on a shot-wise basis. The flowable reaction mixture is formed by combining the components of that mixture in the mixing chamber of a mixhead. The contents of the mixhead are introduced (preferably via an outlet pipe) into a mold in a manner such that the mixing chamber is substantially emptied in each case. Any ambient gas in the mixing chamber is then removed before the respective next shot is initiated.

Process and device for producing plastic moldings from a flowable reaction mixture

A process and device for foaming casings, particularly refrigerator casings, with a blowing agent which can form an explosive mixture with atmospheric oxygen during evaporation which reduce the risk of explosion by introducing inert gas into the space in which the foam is to be formed by means of a servo-controlled inlet valve.

Process and device for producing foam casings with CFC-free polyurethane

A process and apparatus are described for the production of a flowable reaction mixture from at least two flowable reactive components which may be difficult to mix, which components react with one another to form a solid or a foam material. The components are injected into a mixing zone where the components are mixed in a continuous flow. The mixture flowing from the throttling zone is divided into two sub-streams which flow around a piston and which recombine opposite the division point.

Process and apparatus for the production of a flowable reaction mixture

A process and apparatus are described for the production of a flowable reaction mixture from at least two flowable reactive components which may be difficult to mix, which components react with one another to form a solid or a foam material. The components are injected into a mixing zone where they components are mixed in a continuous flow. The mixture flowing from the throttle zone is divided into two sub-streams which flow around a piston and which recombine opposite the division point.

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Konigswinter, Germany

Helmut Duschanek