Method for the layerwise construction of models
AssigneeVoxeljet AG
InventorsIngo Gnüchtel, Daniel Günther, Ingo Ederer, Christian Lustig, Edgar Müller
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Abstract
A method is described here for the layerwise construction of models, wherein, in a building region, a particulate material is applied layerwise and selectively cured. These steps are repeated until a desired model is obtained. The material comprises in this case a particulate building material and a spray-dried alkali metal silicate solution. Selective activation of the curing proceeds using a water-comprising solution.
Claims20
A method for building models in layers, wherein a particulate material is applied in layers in a build space and selectively hardened and these steps are repeated until a desired model is obtained, the particulate material comprises a particulate building material, characterized in that the particulate material comprises a spray-dried alkali silicate solution, the method includes a step of curing that is selectively activated by a solution containing water, and that a drying process is involved;
- wherein the particulate material includes an inorganic curing agent;
- and
- the inorganic curing agent is a latent curing agent, a synthetic silica, or a pyrogenic silicic acid.
A material system for building models in layers, wherein a particulate material is applied in layers in a build space and selectively hardened and these steps are repeated until a desired model is obtained, the material system comprises a particulate building material, characterized in that the material system further comprises a spray-dried alkali silicate solution, and that a polar solvent is used for selectively activating the hardening;
- wherein the material system includes an inorganic curing agent;
- and
- the inorganic curing agent is a latent curing agent, a synthetic silica, or a pyrogenic silicic acid.
A method for building models in layers, wherein a particulate material is applied in layers in a build space and selectively hardened and these steps are repeated until a desired model is obtained, the particulate material comprises a particulate building material, characterized in that the particulate material comprises a spray-dried alkali silicate solution, curing that is selectively activated by a solution containing water, and that a drying process is involved;
- wherein the solution contains a sheet silicate.
A method for building models in layers, comprising the steps of:
- applying a particulate material in layers in a build space, and selectively hardening the particulate material;
- wherein these steps are repeated until a desired model is obtained, wherein the particulate material comprises:
- a particulate building material including a mixture of:
- i) a spray-dried alkali silicate binder particles;
- ii) a sand particles, and
- iii) an amorphous silicon dioxide particles;
- and
- the method includes a step of curing that is selectively activated by a solution containing water, and wherein a drying process is involved.
A material system for building models in layers, wherein a particulate material is applied in layers in a build space and selectively hardened and these steps are repeated until a desired model is obtained, wherein the material system comprises:
- a particulate building material including a mixture of:
- i) a spray-dried alkali silicate binder particles
- ii) a sand particles, and
- iii) an amorphous silicon dioxide particles;
- and
- a polar solvent for selectively activating the hardening.
Dependencies are inferred from the claim text.