3D PRINTING SYSTEM FOR PREPARING A THREE-DIMENSIONAL OBJECT WITH AN AUTOCLAVE

摘要

The present invention relates to a three-dimensional printing system for preparing a three-dimensional object made at least partially of an expanded polymer comprising: • i) an autoclave, • ii) a printing device (10) for preparing an expandable polymer melt and for depositing a strand of the expandable, expanding or expanded polymer onto a surface and • iii) a three-dimensional movement device for adjusting the position of the printing device in a predefined three-dimensional matrix so as to allow to deposit the strand of expandable, expanding or expanded polymer at a predetermined time at a precise position within the three-dimensional matrix, wherein the printing device comprises: • a) a feed section (16), • b) a cooling section (18), • c) a backflow prevention section (20), • d) a heating section (22) and • e) a terminal printing head section (24) including a die for depositing the expandable, expanding or expanded polymer strand onto the surface.