Leibniz-institut Fuer Polymerforschung Dresden E.v.

Voxeljet Technology Gmbh

Michael Stephan

Ingo Ederer

Gert Heinrich

Brigitte Isabell Voit

Helmut Dorschner

Philip Elsner

Stefan Dreher

Janke Gudrun

An apparatus for the continuous modification of polymers in the flowable state by electron radiation, includes a device configured for converting polymers into the flowable state, a forming device and at least one irradiation device structured and arranged to provide electron radiation in a region of irradiation. Additionally, the apparatus includes at least one cooling device, a radiation guard and supply and discharge lines inside the radiation guard. The supply and discharge lines realize a continuous transport of the polymers in the flowable state at least through the radiation guard into the region of irradiation. Additionally, the supply and discharge lines realize a continuous transport of one of polymers remaining in the flowable state and modified at least inside the radiation guard and solid formed and modified polymers out of the region of the irradiation.

Apparatus for the continuous modification of polymers in the free-flowing state by means of electron radiation

The invention relates to a method and device for production of a three-dimensional article from a material, by means of layered application. According to the invention, a dropwise application is carried out, whereby drops of reaction components are ejected by a nozzle arrangement () and applied to a base reaction component (), arranged on a substrate (). The material for the three-dimensional article is formed in layers, with reaction of the base reaction component () with reaction components on contact, whereby the material is formed on a reaction of the base reaction component with one of the reaction components to give a material with one material property and on another reaction of the base reaction component with another of the reaction components to give a material with another material property. On production of the three-dimensional article, an article section is produced in which a gradual transition between the one material property and the other material property is generated.

Method and device for production of a three-dimensional article

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Dresden, Germany

Michael Stephan