Hennecke Gmbh

Henneick Gmbh

Adcuram Maschinenbauholding Gmbh

Jürgen Wirth

Reiner Raffel

Michael Begemann

Hans-Michael Sulzbach

Helmut Eckardt

Horst Klahre

Martin Schamberg

Wolfgang Pawlik

Florian Thiebes

Ingo Kleba

Lothar Röhrig

Bodo Büchel

Andreas Petersohn

Klaus Sieben

Frank Berghahn

Ulrich Knapp

Lars Etschenberg

Oliver Girnstein

Cellular or compact polyurethane moldings are produced by conveying at least one isocyanate component and at least one polyol component by a metering machine in dispensing manner into a mixing chamber via component lines to form a polyurethane reaction mixture. Subsequently, the polyurethane reaction mixture is discharged from the mixing chamber into a mold. The pressures of the components are registered by means of pressure transducers in the component lines and are transmitted to a monitoring device. The temporal profiles of the pressures are compared with reference pressure values stored in the monitoring device. A malfunction is signalled in the event of deviation of at least one of the measured pressure profiles from the reference pressure profile beyond a predetermined tolerance threshold.

Process for producing polyurethane moldings

The invention relates to a process for the production of sandwich elements (so-called panels), in which the rising reactive mixture is guided, when it rises, through guide elements arranged between the upper and lower outer layers. This process produces void-free panels having a regular cell structure. The invention also relates to an apparatus useful for the production of such sandwich elements.

Process for the production of sandwich elements from reactive plastics material

The present invention relates to a process for the continuous production of polyurethane sandwich elements comprising an upper outer layer and a lower outer layer and a layer of cellular polyurethane lying in between, which is firmly bonded to the outer layers. This invention also relates to an apparatus suitable for the production of polyurethane sandwich elements as described above.

Apparatus for the production of polyurethane sandwich elements

The invention relates to a mixing head and to a method of mixing at least one polyol component and at least one isocyanate component and where appropriate additives, to form a polyurethane reaction mixture.

Multiple component mixing head

The present invention relates to a method for the continuous mixing of at least one polyol component and at least one isocyanate component and optionally additives to form a polyurethane reaction mixture in a stirrer mixer with an axially conveying stirrer.

Method for mixing a polyol component and an isocyanate component

The invention relates to a method of producing rebonded foam blocks in a box mould having a base, a plurality of mutually adjacent mould side walls standing thereupon and a plunger movable in the direction of the base, in which at least one of the mould side walls may be swiveled about a substantially horizontal swivel axis mounted on the base between an outwardly directed position and a substantially vertical position, the method involving mixing the foam flakes with a binder, swiveling at least one of the mould side walls outwards such that the cross-sectional area of the box mould increases from the bottom upwards, introducing the foam flakes into the box mould, adjusting the at least one mould side wall so that the cross-sectional area of the box mould is substantially constant over its height, compressing the foam flakes by means of the plunger to the desired density or foam block height, thereby bonding together the foam flakes and removing the finished foam block from the mould.

Method and device for producing rebonded foam blocks

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Kö'ln, Germany

Jürgen Wirth