Process and apparatus for producing three-dimensional shaped ceramic bodies
AssigneesHorst Fischer, Rainer Telle, Joerg Erbert, Emre Oezkol
InventorsKrishna Uibel, Rainer Telle, Horst Fischer
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Abstract
A process for producing three-dimensional shaped ceramic bodies by layerwise printing of a suspension comprising the constituents required for formation of the shaped ceramic bodies by means of an inkjet printer in the desired two-dimensional shape onto a support material, drying and hardening of the layer composite formed, which is characterized in that printing is effected using a suspension comprising from 50 to 80% by weight of ceramic particles in a dispersion medium comprising an aqueous boehmite sol, at least one low molecular weight alcohol, at least one drying inhibitor and at least one organic fluidizer, and also an apparatus for carrying out this process are described.
Claims38
A process for producing three-dimensional shaped ceramic bodies by layered printing of a suspension comprising the constituents required for formation of the shaped ceramic bodies by means of an inkjet printer into a two-dimensional shape onto a support material, drying and hardening of the layer composite formed, characterized in that printing is effected using a suspension comprising from 50 to 80% by weight of ceramic particles in a dispersion medium comprising an aqueous boehmite sol, at least one low molecular weight alcohol selected from the group consisting of methanol, ethanol, propanol, isopropanol or mixtures thereof, at least one drying inhibitor and at least one organic fluidizer.
The process as claimed in at least one of the preceding claims, characterized in that the layers are printed onto a support material onto which one or more layers which can be removed during hardening of the layer composite have previously been printed using a suspension comprising a material which vaporizes during hardening of the layer composite in the dispersion medium indicated.
Dependencies are inferred from the claim text.