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CN103371872B 用于制造正牙器具的系统和方法 有权

用于制造正牙器具的系统和方法
摘要：
一种对呈正牙器具形式的生坯(210)进行粘结剂脱除的系统(200)，其可包括配置成容纳超临界流体的压力容器(220)。流体化学物源(232)可耦接至压力容器(220)以向压力容器(220)供应流体化学物。热源(238)可配置成加热流体化学物。泵(234)可将流体化学物加压到至少超临界压力。收集容器(244)耦接至压力容器(220)以捕集随着至少超临界流体的压力降低而从生坯移除的粘结剂。一种用于制造正牙器具的方法，包括：将包括颗粒和粘结剂的生坯(210)暴露至超临界流体以从生坯中移除至少一些粘结剂，以及随着超临界流体转变为非超临界流体而从超临界流体收集所移除的粘结剂。
摘要（英）：

A system 200 for debinding a green body 210 in the form of an orthodontic appliance includes a pressure vessel 220 configured to contain a supercritical fluid. A source 232 of a fluid chemical is coupled to the pressure vessel 220 to supply the fluid chemical to the pressure vessel 220. A heat source 238 is configured to heat the fluid chemical. A pump 234 pressurizes the fluid chemical to at least the supercritical pressure. A collection vessel 244 is coupled to the pressure vessel 220 to capture the binder removed from the green bodies as at least the pressure of the supercritical fluid is reduced. A method of manufacturing an orthodontic appliance includes exposing green bodies 210 including particles and a binder to a supercritical fluid to remove at least some of the binder from the green bodies, and collecting the removed binder from the supercritical fluid as the supercritical fluid transitions to a non-supercritical fluid.

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