公开(公告)号：DE60213267T2

公开(公告)日：2007-08-02

申请号：DE60213267

申请日：2002-09-24

Applicant: 3D SYSTEMS INC

Inventor： SCHMIDT ALAN

IPC: B29C67/00

Abstract: A selective deposition modeling method and apparatus for dispensing a curable phase change material. The dispensing temperature of the material is set at or less than a thermally stable temperature value for the material in which the reactive component of the material remains substantially uncured when held at the temperature for a desired time period. The dispensed material is provided with an environment that enables the material to solidify to form layers of the object. The solidified material is normalized to a desired layer thickness and is then cured by exposure to actinic radiation. In a preferred embodiment a UV curable phase change material is dispensed at about 80° C. and has a viscosity of about 13 to about 14 centipoise at this temperature. The cured material provides substantially increased physical properties over thermoplastic phase change materials previously used in selective deposition modeling.

公开(公告)号：DE60213267D1

公开(公告)日：2006-08-31

申请号：DE60213267

申请日：2002-09-24

Applicant: 3D SYSTEMS INC

Inventor： SCHMIDT ALAN

IPC: B29C67/00

Abstract: A selective deposition modeling method and apparatus for dispensing a curable phase change material. The dispensing temperature of the material is set at or less than a thermally stable temperature value for the material in which the reactive component of the material remains substantially uncured when held at the temperature for a desired time period. The dispensed material is provided with an environment that enables the material to solidify to form layers of the object. The solidified material is normalized to a desired layer thickness and is then cured by exposure to actinic radiation. In a preferred embodiment a UV curable phase change material is dispensed at about 80° C. and has a viscosity of about 13 to about 14 centipoise at this temperature. The cured material provides substantially increased physical properties over thermoplastic phase change materials previously used in selective deposition modeling.