公开(公告)号：US20220273409A1

公开(公告)日：2022-09-01

申请号：US17637488

申请日：2020-09-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Rudolf Schmid ,  Ralf Kelz ,  Christian A. Richter ,  Anja Friedrich ,  James D. Hansen ,  Saswata Chakraborty ,  Benjamin C. Mac Murray ,  Daniel D. Oberpertinger

IPC: A61C13/15 ,  B29C64/135 ,  B29C71/04 ,  A61C13/00

Abstract: The apparatus (1000) includes a housing (110), a chamber (120) disposed in the housing, at least two light emitting diodes (LEDs) (130) disposed within the housing (110), and a user interface (140) disposed on an exterior (112) of the housing. The chamber (120) is adaptable to each of an open, closed, and hermetically sealed configuration. The chamber (120) includes a material transparent to actinic radiation and light from the LEDs (130) enters the chamber from more than one direction. The user interface (140) includes a display (142) and program switches (144) configured to adjust at least three operational parameters of the apparatus. The apparatus (1000) further includes a vacuum pump (150) operatively coupled to the chamber (120). The system includes the apparatus (1000) and an article (180). An article includes layers of at least one photopolymerized crosslinked composition and a low extractable component content. A method of post-curing an article includes obtaining an article (180), placing the article in an apparatus (1000),

公开(公告)号：US11202694B2

公开(公告)日：2021-12-21

申请号：US15744930

申请日：2016-07-11

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Helmar B. Mayr ,  Gioacchino Raia ,  Daniel D. Oberpertinger ,  Martin Goetzinger ,  Peter Bissinger

IPC: A61C13/00 ,  B33Y30/00 ,  B29C64/20 ,  B29C64/165

Abstract: A method of making a dental article, has steps of (i) providing a layer of sinter powder, (ii) providing a solidifiable binder to form a circumferential fixation zone (114) which encloses a portion of the powder layer. The method further has the step of repeating steps (i) and (ii) with each fixation zone (114) of one layer being in contact with a fixation zone (114) of an adjacent layer such that a plurality of the fixation zones (114) together form a coherent hollow sleeve (116) extending across the layers. The corresponding plurality of powder portions in combination form a contiguous batch (118) of powder captured in the sleeve. The method facilitates the manufacturing of sintered dental articles.

公开(公告)号：US20210228316A1

公开(公告)日：2021-07-29

申请号：US17250132

申请日：2019-06-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Bastian P. Kirchner ,  Daniel D. Oberpertinger ,  Andreas Hermann ,  Gioacchino Raia ,  Anja Friedrich

IPC: A61C5/77 ,  B29C64/40 ,  B29C64/264 ,  B29C64/129 ,  B33Y10/00 ,  B33Y80/00 ,  A61C13/00

Abstract: A method of building up a physical object by additive manufacturing which has the steps of building up the object and at least one support structure layer by layer along a build axis. The support structure supports the object relative to a build platform. During building up the object and the at least one support structure a connection is provided between the support structure and the object by a plurality of layers each of which being a common layer of the object and the support structure.