Patent ID: 7955537

Claim:
A process for producing patterns in layers on a building platform, comprising: providing a first particulate material; providing a first reactive component; mixing the first particulate material and the first reactive component as needed during the producing process to form a first material mixture, wherein a residual porosity remains in the first material mixture; applying the first material mixture to the building platform; providing a second material, the second material comprising a reactive component, wherein the second material comprises a furan resin and/or a phenol resin and is applied by a droplet production technique; applying the second material selectively onto the first material mix creating a layer and thus causing a chemical reaction that beings to solidify the combination of the first material mixture and the second material wherein processing times of the material mixtures are kept short so that any slightly volatile ingredients in the second material are retained; repeating the applying steps within a time period before the chemical reaction completely solidifies the previous layer; repeating the above steps until a pattern is produced; and evaporating the residual slightly volatile ingredients; wherein the first reactive component includes a carrying agent and volatilization of the entire carrying agent occurs prior to being used as a casting mold.