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1. (WO2018055521) METHOD AND SYSTEM FOR SOLID FREEFORM FABRICATION

Pub. No.:    WO/2018/055521    International Application No.:    PCT/IB2017/055692
Publication Date: Fri Mar 30 01:59:59 CEST 2018 International Filing Date: Thu Sep 21 01:59:59 CEST 2017
IPC: B29C 64/106
B33Y 80/00
B29C 64/112
Applicants: STRATASYS LTD.
Inventors: LEVY, Avraham
RAVICH, Diana
ZONDER, Lior
SHELEF, Gil
MANNA, Cesar M.
Title: METHOD AND SYSTEM FOR SOLID FREEFORM FABRICATION
Abstract:
Methods of layerwise fabrication of a three-dimensional object, and objected obtained thereby are provided. The methods are effected by dispensing at least a first modeling formulation and a second modeling formulation to form a core region using both said first and said second modeling formulations, an inner envelope region at least partially surrounding said core region using said first modeling formulation but not said second modeling formulation, and an outer envelope region at least partially surrounding said inner envelope region using said second modeling formulations but not said first modeling formulation; and exposing said layer to curing energy, thereby fabricating the object, The first and second modeling formulations are selected such they differ from one another, when hardened, by at least one of Heat Deflection Temperature (HDT), Izod Impact resistance, Tg and elastic modulus.