HK1248185A1 - 通過間歇曝光的增材製造方法 - Google Patents

通過間歇曝光的增材製造方法

Info

Publication number
HK1248185A1
HK1248185A1 HK18107647.2A HK18107647A HK1248185A1 HK 1248185 A1 HK1248185 A1 HK 1248185A1 HK 18107647 A HK18107647 A HK 18107647A HK 1248185 A1 HK1248185 A1 HK 1248185A1
Authority
HK
Hong Kong
Prior art keywords
additive manufacturing
intermittent exposure
intermittent
exposure
additive
Prior art date
Application number
HK18107647.2A
Other languages
English (en)
Inventor
David Moore
Original Assignee
Carbon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carbon Inc filed Critical Carbon Inc
Publication of HK1248185A1 publication Critical patent/HK1248185A1/zh

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/10—Processes of additive manufacturing
    • B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
    • B29C64/124—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using layers of liquid which are selectively solidified
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B29C64/264—Arrangements for irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y10/00—Processes of additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/0058—Liquid or visquous

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
HK18107647.2A 2015-02-05 2018-06-13 通過間歇曝光的增材製造方法 HK1248185A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562112290P 2015-02-05 2015-02-05
PCT/US2016/016332 WO2016126796A2 (en) 2015-02-05 2016-02-03 Method of additive manufacturing by intermittent exposure

Publications (1)

Publication Number Publication Date
HK1248185A1 true HK1248185A1 (zh) 2018-10-12

Family

ID=55436156

Family Applications (1)

Application Number Title Priority Date Filing Date
HK18107647.2A HK1248185A1 (zh) 2015-02-05 2018-06-13 通過間歇曝光的增材製造方法

Country Status (12)

Country Link
US (2) US10792855B2 (zh)
EP (1) EP3253559B1 (zh)
JP (1) JP6731930B2 (zh)
KR (1) KR20170115070A (zh)
CN (1) CN107438513B (zh)
AU (1) AU2016215409B2 (zh)
BR (1) BR112017016780A2 (zh)
CA (1) CA2974982A1 (zh)
HK (1) HK1248185A1 (zh)
MX (1) MX2017010111A (zh)
SG (1) SG11201705781SA (zh)
WO (1) WO2016126796A2 (zh)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9498920B2 (en) 2013-02-12 2016-11-22 Carbon3D, Inc. Method and apparatus for three-dimensional fabrication
KR20150117273A (ko) 2013-02-12 2015-10-19 카본3디, 인크. 연속 액체 중간상 인쇄
US11260208B2 (en) 2018-06-08 2022-03-01 Acclarent, Inc. Dilation catheter with removable bulb tip
US9360757B2 (en) 2013-08-14 2016-06-07 Carbon3D, Inc. Continuous liquid interphase printing
KR20170017941A (ko) 2014-06-20 2017-02-15 카본, 인크. 중합성 액체의 왕복 공급을 통한 3차원 프린팅
KR20170023977A (ko) 2014-06-23 2017-03-06 카본, 인크. 3차원 물체의 제조에 사용하기 위한, 다중 경화 메커니즘을 갖는 폴리우레탄 수지
ITUB20154169A1 (it) 2015-10-02 2017-04-02 Thelyn S R L Metodo e apparato di foto-indurimento a substrato auto-lubrificante per la formazione di oggetti tridimensionali.
US10500786B2 (en) 2016-06-22 2019-12-10 Carbon, Inc. Dual cure resins containing microwave absorbing materials and methods of using the same
EP3290185A1 (en) * 2016-08-31 2018-03-07 Airbus Operations GmbH Method and apparatus for joining components
US10625470B2 (en) * 2016-09-28 2020-04-21 Ada Foundation 3D printing of composition-controlled copolymers
WO2018129020A1 (en) 2017-01-05 2018-07-12 Carbon, Inc. Dual cure stereolithography resins containing thermoplastic particles
US11535686B2 (en) 2017-03-09 2022-12-27 Carbon, Inc. Tough, high temperature polymers produced by stereolithography
CA3094253A1 (en) * 2017-03-28 2018-10-04 The University Of Western Ontario Method and system for 3d printing of electrically conductive polymer structures
BR112020003593A2 (pt) * 2017-08-23 2020-09-01 Evapco, Inc. fabricação aditiva por refrigeração líquida seletiva
US10688737B2 (en) 2017-09-14 2020-06-23 General Electric Company Method for forming fiber-reinforced polymer components
CN112055643A (zh) * 2018-03-16 2020-12-08 维纳米技术公司 三维陶瓷图案的喷墨印刷
CN109213233B (zh) * 2018-03-21 2021-06-29 中国航空制造技术研究院 一种电子束熔丝增材制造中的温度场调控方法及其设备
JP7163956B2 (ja) * 2018-04-02 2022-11-01 コニカミノルタ株式会社 樹脂組成物、およびこれを用いた立体造形物の製造方法、ならびに立体造形物
AU2019204143A1 (en) 2018-06-15 2020-01-16 Howmedica Osteonics Corp. Stackable build plates for additive manufacturing powder handling
CN112313069B (zh) * 2018-07-02 2023-08-11 依视路国际公司 用于在增材制造工艺中确定三维产品的优先级和位置的方法
JP7350836B2 (ja) 2018-07-18 2023-09-26 アルケマ フランス 重合性イオン種をベースとする硬化性組成物を用いて調製された物品
US11203156B2 (en) 2018-08-20 2021-12-21 NEXA3D Inc. Methods and systems for photo-curing photo-sensitive material for printing and other applications
TWI691529B (zh) * 2018-10-08 2020-04-21 致達應材股份有限公司 ３ｄ積層製造用之混合式配方組合物與其製程方法
US11472975B2 (en) * 2018-10-08 2022-10-18 Vista Applied Materials, Inc. Formulation composition for 3D additive manufacturing and processing method of the same
CA3129247A1 (en) 2018-11-09 2020-05-14 NEXA3D Inc. Three-dimensional printing system
CN109648851A (zh) * 2019-01-19 2019-04-19 郑州迈客美客电子科技有限公司 兼顾光强一致性和分辨精度的阵列式面光源的获取方法、阵列式面光源、及光固化装置
IL286370B1 (en) 2019-03-18 2024-10-01 Nexa3D Inc Method and system for additive manufacturing
US10967573B2 (en) 2019-04-02 2021-04-06 NEXA3D Inc. Tank assembly and components thereof for a 3D printing system
WO2020263480A1 (en) * 2019-06-28 2020-12-30 Carbon, Inc. Dual cure additive manufacturing resins for the production of objects with mixed tensile properties
EP4072827A4 (en) * 2020-01-29 2023-08-02 Hewlett-Packard Development Company, L.P. THREE-DIMENSIONAL PRINTING WITH CARBAMIDE-CONTAINING COMPOUND
KR20220161276A (ko) 2020-02-04 2022-12-06 캐보트 코포레이션 액체-기반 적층 제조를 위한 조성물
US11712849B2 (en) * 2020-07-06 2023-08-01 Nissan North America, Inc. 3-D printer
US11413819B2 (en) 2020-09-03 2022-08-16 NEXA3D Inc. Multi-material membrane for vat polymerization printer
US20220339860A1 (en) * 2021-04-21 2022-10-27 University Of Dayton Research Institute Pulse cure of ultraviolet light curable materials
CN114641144A (zh) * 2022-03-24 2022-06-17 浙江大学 一种光控增材制造电子电路的方法
US12023865B2 (en) 2022-08-11 2024-07-02 NEXA3D Inc. Light engines for vat polymerization 3D printers

Family Cites Families (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7702518A (nl) * 1977-03-09 1978-09-12 Akzo Nv Werkwijze voor het bekleden van een substraat met een stralingshardbare bekledingskompositie.
US5236637A (en) 1984-08-08 1993-08-17 3D Systems, Inc. Method of and apparatus for production of three dimensional objects by stereolithography
JPH0224127A (ja) * 1988-07-13 1990-01-26 Mitsui Eng & Shipbuild Co Ltd 光学的造形法
JPH0224121A (ja) * 1988-07-13 1990-01-26 Mitsui Eng & Shipbuild Co Ltd 光学的造形法
JPH0757532B2 (ja) 1988-10-19 1995-06-21 松下電工株式会社 三次元形状の形成方法
DE4004620C1 (en) 1990-02-15 1991-09-05 Du Pont De Nemours (Deutschland) Gmbh, 6380 Bad Homburg, De Photo-structured layer of three=dimensional object prodn. - by using fusible plastisol or organosol contg. unsatd. monomer, photoinitiator and thermally reactive cpd.
US5122441A (en) 1990-10-29 1992-06-16 E. I. Du Pont De Nemours And Company Method for fabricating an integral three-dimensional object from layers of a photoformable composition
US5474719A (en) * 1991-02-14 1995-12-12 E. I. Du Pont De Nemours And Company Method for forming solid objects utilizing viscosity reducible compositions
EP0525578A1 (en) 1991-08-02 1993-02-03 E.I. Du Pont De Nemours And Company Photopolymer composition for the production of three-dimensional objects
EP0579503B1 (en) 1992-07-17 1997-11-05 Ethicon Inc. Radiation-curable, urethane-acrylate prepolymers and crosslinked polymers
US5679719A (en) 1993-03-24 1997-10-21 Loctite Corporation Method of preparing fiber/resin composites
DE59407524D1 (de) 1993-08-26 1999-02-04 Ciba Geigy Ag Flüssige strahlungshärtbare Zusammensetzung, insbesondere für die Stereolithographie
IL112140A (en) 1994-12-25 1997-07-13 Cubital Ltd Method of forming three dimensional objects
US5707780A (en) 1995-06-07 1998-01-13 E. I. Du Pont De Nemours And Company Photohardenable epoxy composition
US6658314B1 (en) 1999-10-06 2003-12-02 Objet Geometries Ltd. System and method for three dimensional model printing
DE19961926A1 (de) 1999-12-22 2001-07-05 Basf Coatings Ag Thermisch mit aktinischer Strahlung härtbare Stoffgemische und ihre Verwendung
US7300619B2 (en) 2000-03-13 2007-11-27 Objet Geometries Ltd. Compositions and methods for use in three dimensional model printing
DE10015408A1 (de) 2000-03-28 2001-10-11 Fraunhofer Ges Forschung Verfahren und Vorrichtung zur Herstellung von Bauteilen aus lichtaushärtbaren Werkstoffen
US6309797B1 (en) 2000-04-26 2001-10-30 Spectra Group Limited, Inc. Selectively colorable polymerizable compositions
TW557298B (en) * 2000-08-14 2003-10-11 Ciba Sc Holding Ag A compound, a photopolymerizible composition, a process for producing coatings and a method for causing a photoinitiator to accumulate at the surface of coatings
US6544465B1 (en) 2000-08-18 2003-04-08 Micron Technology, Inc. Method for forming three dimensional structures from liquid with improved surface finish
JP4382978B2 (ja) 2000-12-04 2009-12-16 学校法人神奈川大学 光硬化性・熱硬化性樹脂組成物
DE10115505B4 (de) 2001-03-29 2007-03-08 Basf Coatings Ag Thermisch und mit aktinischer Strahlung härtbare wäßrige Dispersionen, Verfahren zu ihrer Herstellung und ihre Verwendung
DE10119817A1 (de) 2001-04-23 2002-10-24 Envision Technologies Gmbh Vorrichtung und Verfahren für die zerstörungsfreie Trennung ausgehärteter Materialschichten von einer planen Bauebene
US7270528B2 (en) 2002-05-07 2007-09-18 3D Systems, Inc. Flash curing in selective deposition modeling
ATE527099T1 (de) 2004-03-22 2011-10-15 Huntsman Adv Mat Switzerland Photohärtbare zusammensetzungen
DE102004022606A1 (de) 2004-05-07 2005-12-15 Envisiontec Gmbh Verfahren zur Herstellung eines dreidimensionalen Objekts mit verbesserter Trennung ausgehärteter Materialschichten von einer Bauebene
EP2402127B1 (en) 2004-10-19 2018-07-18 Rolls-Royce Corporation Method associated with anisotropic shrink in sintered ceramic items
US7709544B2 (en) 2005-10-25 2010-05-04 Massachusetts Institute Of Technology Microstructure synthesis by flow lithography and polymerization
US20080103226A1 (en) 2006-10-31 2008-05-01 Dsm Ip Assets B.V. Photo-curable resin composition
US7892474B2 (en) * 2006-11-15 2011-02-22 Envisiontec Gmbh Continuous generative process for producing a three-dimensional object
US8128393B2 (en) 2006-12-04 2012-03-06 Liquidia Technologies, Inc. Methods and materials for fabricating laminate nanomolds and nanoparticles therefrom
US8870871B2 (en) 2007-01-17 2014-10-28 University Of Massachusetts Lowell Biodegradable bone plates and bonding systems
US9921477B2 (en) 2007-04-03 2018-03-20 Base Se Photoactivable nitrogen bases
EP2052693B2 (en) 2007-10-26 2021-02-17 Envisiontec GmbH Process and freeform fabrication system for producing a three-dimensional object
JP5873720B2 (ja) 2008-12-22 2016-03-01 ネーデルランデ オルガニサチエ ヴォール トエゲパスト−ナツールウェテンスハペリエク オンデルゾエク ティーエヌオーＮｅｄｅｒｌａｎｄｓｅ Ｏｒｇａｎｉｓａｔｉｅ Ｖｏｏｒ Ｔｏｅｇｅｐａｓｔ−Ｎａｔｕｕｒｗｅｔｅｎｓｃｈａｐｐｅｌｉｊｋ Ｏｎｄｅｒｚｏｅｋ Ｔｎｏ ３ｄ有体物の積層製造の方法とそのシステム
US8372330B2 (en) 2009-10-19 2013-02-12 Global Filtration Systems Resin solidification substrate and assembly
IT1397457B1 (it) 2010-01-12 2013-01-10 Dws Srl Piastra di modellazione per una macchina stereolitografica, macchina stereolitografica impiegante tale piastra di modellazione e utensile per la pulizia di tale piastra di modellazione.
IT1403482B1 (it) * 2011-01-18 2013-10-17 Dws Srl Metodo per la produzione di un oggetto tridimensionale e macchina stereolitografica impiegante tale metodo
US8801418B2 (en) 2011-01-31 2014-08-12 Global Filtration Systems Method and apparatus for making three-dimensional objects from multiple solidifiable materials
US9120270B2 (en) 2012-04-27 2015-09-01 University Of Southern California Digital mask-image-projection-based additive manufacturing that applies shearing force to detach each added layer
US9636873B2 (en) 2012-05-03 2017-05-02 B9Creations, LLC Solid image apparatus with improved part separation from the image plate
WO2014108364A1 (en) * 2013-01-10 2014-07-17 Luxexcel Holding B.V. Method of printing an optical element
EP2757118A1 (en) 2013-01-17 2014-07-23 Allnex Belgium, S.A. Radiation curable aqueous compositions with reversible drying.
US9498920B2 (en) * 2013-02-12 2016-11-22 Carbon3D, Inc. Method and apparatus for three-dimensional fabrication
KR20150117273A (ko) * 2013-02-12 2015-10-19 카본3디, 인크. 연속 액체 중간상 인쇄
MX350841B (es) * 2013-02-12 2017-09-18 Carbon3D Inc Método y aparato para fabricación tridimensional.
ITGE20130027A1 (it) * 2013-03-04 2014-09-05 Smart3D Net Di Dotta Andrea E Gie Andrea Snc Metodo e dispositivo per la produzione di oggetti attraverso stereolitografia
US9360757B2 (en) * 2013-08-14 2016-06-07 Carbon3D, Inc. Continuous liquid interphase printing
CN103571211A (zh) 2013-10-13 2014-02-12 甘春丽 双重固化组合物
CN103521768B (zh) 2013-10-15 2015-06-10 北京航空航天大学 一种采用纳米材料增强的选择性激光烧结成形复合材料的制造方法
US9096722B2 (en) 2013-10-18 2015-08-04 Hrl Laboratories, Llc Method for curing structures using a dual photoinitiator system and a structure made using the same
JP6433651B2 (ja) 2013-11-21 2018-12-05 スリーエム イノベイティブ プロパティズ カンパニー 接着剤、接着剤付部材及び部材間の接続方法
US9738013B1 (en) 2013-12-19 2017-08-22 Hrl Laboratories, Llc Multi-chemistry microlattice structures and methods of manufacturing the same
US10073424B2 (en) 2014-05-13 2018-09-11 Autodesk, Inc. Intelligent 3D printing through optimization of 3D print parameters
US9782934B2 (en) 2014-05-13 2017-10-10 Autodesk, Inc. 3D print adhesion reduction during cure process
WO2015195909A1 (en) * 2014-06-20 2015-12-23 Carbon3D, Inc. Three-dimensional printing using tiled light engines
KR20170023977A (ko) 2014-06-23 2017-03-06 카본, 인크. 3차원 물체의 제조에 사용하기 위한, 다중 경화 메커니즘을 갖는 폴리우레탄 수지
US10589512B2 (en) 2014-07-10 2020-03-17 Carbon, Inc. Methods and apparatus for continuous liquid interface production with rotation
US9574039B1 (en) 2014-07-22 2017-02-21 Full Spectrum Laser Additive use in photopolymer resin for 3D printing to enhance the appearance of printed parts
CN104228067A (zh) * 2014-07-23 2014-12-24 中国科学院重庆绿色智能技术研究院 一种溶液固化快速成型制造方法
WO2016172788A1 (en) 2015-04-30 2016-11-03 Fortier, Raymond Improved stereolithography system
US9708440B2 (en) 2015-06-18 2017-07-18 Novoset, Llc High temperature three dimensional printing compositions
US10384439B2 (en) 2015-11-06 2019-08-20 Stratasys, Inc. Continuous liquid interface production system with viscosity pump

Also Published As

Publication number Publication date
CN107438513A (zh) 2017-12-05
AU2016215409B2 (en) 2020-10-01
MX2017010111A (es) 2017-11-23
WO2016126796A3 (en) 2016-10-06
CN107438513B (zh) 2020-12-29
JP6731930B2 (ja) 2020-07-29
EP3253559B1 (en) 2020-12-09
SG11201705781SA (en) 2017-08-30
EP3253559A2 (en) 2017-12-13
CA2974982A1 (en) 2016-08-11
JP2018504300A (ja) 2018-02-15
WO2016126796A2 (en) 2016-08-11
US10792855B2 (en) 2020-10-06
AU2016215409A1 (en) 2017-08-03
US20200361139A1 (en) 2020-11-19
US20180009162A1 (en) 2018-01-11
KR20170115070A (ko) 2017-10-16
BR112017016780A2 (pt) 2018-04-17
US10974445B2 (en) 2021-04-13

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