公开(公告)号：HK1088280A1

公开(公告)日：2006-11-03

申请号：HK06108783

申请日：2006-08-08

Applicant: 3D SYSTEMS INC

Inventor： BREDT JAMES F ,  ANDERSON TIMOTHY C ,  RUSSELL DAVID B

IPC: C04B28/16 ,  B28B20060101 ,  B28B1/00 ,  B28B1/16 ,  B28B7/34 ,  B28B7/46 ,  B29C20060101 ,  B29C67/00 ,  B29C67/24 ,  C04B20060101 ,  C04B28/14 ,  C04B40/00

Abstract: A layer of particulate material (20) is applied on a downwardly movable surface (22) of a container (24), preferably using a counter-roller to minimize disruption of previously formed layers. The layer thickness is preferably 50-75 micrometers and an ink-jet nozzle (28) delivers droplets of an aqueous fluid (26) to a portion (30) of the material in any predetermined two-dimensional pattern, causing a reaction and re-hydration of the plaster. A solid circular layer is formed that becomes a cross-sectional portion of the final article, formed of the assembled portions. An independent claim is included for a method for forming an article.