Method for the layerwise construction of models
First Claim
1. 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.
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Accused Products
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.
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Citations
20 Claims
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1. 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;
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. 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;
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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.
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16. 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.
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17. A method for building models in layers, comprising the steps of:
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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. - View Dependent Claims (18)
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19. 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:
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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. - View Dependent Claims (20)
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Specification