Patent ID: 7531117
Filing Date: 2009-05-12
Classification: B22C,B29C,B29K,B33Y,Y02P

Abstract:
1. A method for producing models in layers, comprising: (a) applying a first material in a layer on a building platform wherein the first material comprises a particulate material and a first reactive component; (b) selectively applying a second material to the first layer via a droplet production technique, wherein the second material comprises a second reactive component and a non-reacting carrying agent and calculating a quantity x wherein m h is quantity of the first reactive component as determined by the product of the weight of the particulate material of the first material and a desired proportional mass of the first reactive component, r p is a value of resolution in dots per inch of the droplet production technique, ν f,d is a volume of liquid particles in the second material, A b is an area of the layer to recieve the second material, and ρ h is the density of the second reactive component; (c) curing the first and second materials to form a solid; and (d) repeating steps (a) and (b) to achieve a plurality of layers to form a model, wherein the first material is a mixture of at least two components that is at least partially prepared prior to each applying step.