公开(公告)号：US20200337813A1

公开(公告)日：2020-10-29

申请号：US16764917

申请日：2018-11-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

IPC: A61C13/00 ,  A61C5/77 ,  B29C64/129 ,  B29C64/35 ,  B33Y40/20 ,  B33Y10/00 ,  B33Y80/00 ,  B33Y30/00

Abstract: A method of making a physical object by additive manufacturing. The method has the steps of providing a light hard-enable primary material (11), building up the object (100) by successively hardening portions of the light hardenable primary material (11) by irradiating the portions with light, coating at least a part of the object (100) with a light permeable coating or oxygen protective material; and irradiating the coated object (100) with light and thereby post-hardening any light hardenable material (11).

公开(公告)号：US20200324479A1

公开(公告)日：2020-10-15

申请号：US16769310

申请日：2018-12-06

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Anja Friedrich ,  Michael Jahns ,  Malte Korten ,  Christian A. Richter ,  Bastian P. Kirchner ,  Gallus Schechner ,  Daniel D. Oberpertinger ,  Wolfgang Weinmann

IPC: B29C64/35 ,  A61C5/77 ,  B08B3/10

Abstract: A system (1) for washing a 3D-printed object (4). The system (1) has a washing device (2) and a workpiece (3) that includes the 3D-printed object (4). The washing device (2) has a container (7) that forms a process chamber (8) for receiving a liquid cleaning agent (9), and the container (7) has an inlet (10) into the process chamber (8). The workpiece (3) further has a support structure (6) that supports the 3D-printed object (4) and a base (5) supporting the support structure (6). The base (5), in a mating relationship with the inlet (10), forms a restraint preventing the workpiece (3) from passing through the inlet (10) in a situation in which the workpiece (3) is placed with the 3D-printed object (4) located within the process chamber (8).

公开(公告)号：US12121413B2

公开(公告)日：2024-10-22

申请号：US17297186

申请日：2020-01-21

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Saswata Chakraborty ,  Benjamin C. MacMurray ,  James D. Hansen ,  Karl J. L. Geisler ,  Thomas P. Klun ,  Daniel J. Skamser ,  John M. Riedesel ,  Steven H. Kong ,  Anja Friedrich

IPC: A61C7/08 ,  B29C64/135 ,  B29C64/30 ,  B33Y10/00 ,  C08F2/46 ,  C08F2/50 ,  C08G61/04 ,  B29C64/241 ,  B29C71/02 ,  B29C71/04 ,  B29L31/00 ,  B33Y40/20

CPC classification number: A61C7/08 ,  B29C64/135 ,  B29C64/30 ,  B33Y10/00 ,  B29C64/241 ,  B29C71/02 ,  B29C71/04 ,  B29L2031/753 ,  B33Y40/20

Abstract: 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.

公开(公告)号：US11786345B2

公开(公告)日：2023-10-17

申请号：US16764917

申请日：2018-11-13

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

IPC: A61C13/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y80/00 ,  A61C5/77 ,  B29C64/35 ,  B29C64/129 ,  B33Y40/20

CPC classification number: A61C13/0013 ,  A61C5/77 ,  A61C13/0019 ,  B29C64/129 ,  B29C64/35 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/20 ,  B33Y80/00

Abstract: A method of making a physical object by additive manufacturing. The method has the steps of providing a light hardenable primary material (11), building up the object (100) by successively hardening portions of the light hardenable primary material (11) by irradiating the portions with light, coating at least a part of the object (100) with a light permeable coating or oxygen protective material; and irradiating the coated object (100) with light and thereby post-hardening any light hardenable material (11).

公开(公告)号：US11433658B2

公开(公告)日：2022-09-06

申请号：US16631199

申请日：2018-07-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Anja Friedrich ,  Christian A. Richter ,  Malte Korten ,  Bastian Kirchner ,  Michael Jahns ,  Karin Zanklmaier ,  Gioacchino Raia ,  Hans R. Schnagl ,  Andreas G. Herrmann ,  Daniel D. Oberpertinger

IPC: B33Y10/00 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y70/00 ,  B33Y80/00 ,  B29C64/35 ,  B29K105/00 ,  B22F10/40 ,  B22F10/30

Abstract: A method of making a physical object by additive manufacturing. In the method a hardenable primary material is provided, the object is built up by successively hardening layers of the hardenable primary material, and the object is cleaned from excess material by moving the object and thereby generating a mass inertial force in the excess material. The invention facilitates the making of objects by additive manufacturing.

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：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.

公开(公告)号：US20210145543A1

公开(公告)日：2021-05-20

申请号：US16629724

申请日：2018-07-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Anja Friedrich ,  Christian Richter

IPC: A61C5/68 ,  A61C9/00

Abstract: The present invention relates to a delivery system (100) for the release of a dental composition mixed from two or optionally three components. The delivery system has a mixer (14), a cartridge (20) with three compartments and a switchable bypass valve (40) for bypassing the third component from the mixer. The present application further relates to a method of dispensing a dental composition.

公开(公告)号：US20190176394A1

公开(公告)日：2019-06-13

申请号：US16321534

申请日：2017-01-28

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Gioacchino Raia ,  Adrian S. Eckert ,  Bernhard Hofmann ,  Christian A. Richter ,  Bastian P. Kirchner ,  Anja Friedrich ,  Helmar B. Mayr ,  Carsten Franke ,  Gallus Schechner

IPC: B29C64/245 ,  A61C13/00 ,  A61C13/08 ,  B29C64/135 ,  B33Y10/00 ,  B33Y30/00

Abstract: A device for progressively building up an object from a light hardenable material. The device has a perforated build platform for the object. The build platform forms a build surface that faces a light source. The build platform and the light source are positionable relative to each other by computer control. The device is further configured for supplying the light hardenable material through the perforation of the build platform for building up the object. The invention enables the making of colored objects by stereolithography.