Solventum Intellectual Properties Company

Benjamin C MacMurray

Saswata Chakraborty

Thomas P Klun

James D Hansen

Christian A Richter

Karl J L Geisler

John M Riedesel

Anja Friedrich

Richard John Pokorny

Ahmed Salih Abuelyaman

Daniel J Skamser

Robert Steven Clough

Malte Korten

Yongshang Lu

Ta-Hua Yu

Steven H Kong

Zeba Parkar

Bastian P Kirchner

Rudolf Schmid

Benjamin R Coonce

Chad M Amb

Jodi L Connell

Ralf Kelz

Gareth A Hughes

Daniel D Oberpertinger

Tianyu Wu

Kyle C Picha

Nicholas S Wren

Matthew T Lingscheit

Jesse J Gilles

Leif J Erickson

Eric H Tsai

The present disclosure provides apparatuses and methods for manufacturing three-dimensional objects. Each additive manufacturing apparatus () includes: a) a reservoir () for receiving hardenable material; b) a first movable light engine () providing a first light radiation configuration; a second light engine () providing a second light radiation configuration that is different than the first light radiation configuration; and d) a light altering structure (). The light altering structure is located between the reservoir and light radiated from at least one of the first movable light engine or the second light engine. The first movable light engine is configured to radiate light onto a first focal plane () within the reservoir containing the hardenable material and the second light engine is configured to radiate light onto a second focal plane () within the reservoir containing the hardenable material. The method includes: a) obtaining a hardenable material disposed in a reservoir; b) selectively radiating light having a first light radiation configuration from a first movable light engine; and c) selectively radiating light having a second light radiation configuration from a second light engine onto a second focal plane within the hardenable material. The apparatuses and methods can advantageously form objects having different resolutions on demand using the same apparatus, plus optionally can blend light from multiple light engines.

Additive manufacturing apparatus including two light engines and a light altering structure and a method of additive manufacturing a three-dimensional object

The present disclosure provides an orthodontic article including the reaction product of the polymerizable composition. Further, the present disclosure provides polymerizable compositions and methods of making an orthodontic article. The method includes obtaining a polymerizable composition and selectively curing the polymerizable composition to form an orthodontic article. Further, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an orthodontic article; and generating, with the manufacturing device by an additive manufacturing process, the orthodontic article based on the digital object. A system is also provided, including a display that displays a 3D model of an orthodontic article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of an orthodontic article.

Orthodontic articles prepared using a polycarbonate diol, polymerizable compositions, and methods of making the articles

The apparatus () includes a housing (), a chamber () disposed in the housing, at least two light emitting diodes (LEDs) () disposed within the housing (), and a user interface () disposed on an exterior () of the housing. The chamber () is adaptable to each of an open, closed, and hermetically sealed configuration. The chamber () includes a material transparent to actinic radiation and light from the LEDs () enters the chamber from more than one direction. The user interface () includes a display () and program switches () configured to adjust at least three operational parameters of the apparatus. The apparatus () further includes a vacuum pump () operatively coupled to the chamber (). The system includes the apparatus () and an article (). 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 (), placing the article in an apparatus (), inputting a post-cure program or accessing a saved post-cure program through the user interface (), and running the post-cure program. The post-cure program includes light intensity provided by a light source () and length of time of light provided by the light source (), plus a delay time between initiation of light provided by the light source () and initiation of vacuum pulled by the vacuum pump () and/or a delay time between initiation of vacuum pulled on an interior of the chamber () by the vacuum pump () and initiation of light provided by the light source ().

Apparatus, system, method of post-curing an article, and post-cured article

The present disclosure provides a method of making an orthodontic article. The method includes (a) providing a photopolymerizable composition; (b) selectively curing the photopolymerizable composition using actinic radiation to form an article in the shape of an orthodontic article including a number of layers of at least one photopolymerized polymer; and (c) moving the article and thereby generating a mass inertial force in the uncured photopolymerizable composition. The article has a first surface, and no more than 75% of the first surface has a slope magnitude greater than 2.5 degrees. Orthodontic articles are also provided, including an orthodontic article that is prepared according to the method. Orthodontic articles having low extractable component content are further provided. The mass inertial force tends to form a coating layer of uncured photopolymerizable composition on the article, and curing the coating layer can form a surface having low slope magnitude. The low slope magnitude may be correlated to a low haze of the surface of the article.

Orthodontic articles and methods of making and postprocessing same

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Minneapolis, MN, United States of America

Benjamin C MacMurray