申请人:Stratasys Ltd.
公开号:US10994475B2
公开(公告)日:2021-05-04
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.
提供了分层制造三维物体的方法以及由此获得的物体。这些方法是通过分配至少一种第一建模配方和一种第二建模配方,使用所述第一和第二建模配方形成核心区域,使用所述第一建模配方但不使用所述第二建模配方形成至少部分围绕所述核心区域的内包层区域,以及使用所述第二建模配方但不使用所述第一建模配方形成至少部分围绕所述内包层区域的外包层区域;将所述层暴露于固化能量中,从而制造出物体。第一和第二建模配方的选择应使它们在硬化时至少在热变形温度 (HDT)、抗伊佐德冲击性、Tg 和弹性模量中的一个方面彼此不同。