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公开(公告)号：US20220362992A1
公开(公告)日：2022-11-17
申请号：US17878616
申请日：2022-08-01
发明人： James Elmer Abbott, JR. , Alexander Govyadinov , Vladek Kasperchik , Krzysztof Nauka , Sivapackia Ganapathiappan , Lihua Zhao , Howard S. Tom , Yan Zhao , Hou T. Ng
IPC分类号： B29C64/165 , B33Y30/00 , B29C64/291 , B29C64/277 , B29C64/264 , B29C64/268 , B29C35/08 , B29C67/00
摘要： In one example, a lighting device for an additive manufacturing machine includes first light sources each to emit monochromatic light within a first band of wavelengths that includes a peak light absorption of a liquid coalescing agent and second light sources each to emit monochromatic light within a second band of wavelengths different from the first band of wavelengths. Each of the first light sources or each of multiple groups of the first light sources is individually addressable to emit monochromatic light independent of any other of the first light sources or of any other group of the first light sources and each of the second light sources or each of multiple groups of the second light sources is individually addressable to emit monochromatic light independent of any other of the second light sources or of any other group of the second light sources.
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公开(公告)号：US10544311B2
公开(公告)日：2020-01-28
申请号：US15100603
申请日：2014-01-29
发明人： Lihua Zhao , Sivapackia Ganapathiappan , Yan Zhao , Krzysztof Nauka , Howard S. Tom , Hou T. Ng
IPC分类号： C09D5/03 , C08L101/00 , C08L77/02 , C08L77/06 , B29C64/40 , B29C64/386 , B29C64/165 , B29C64/00 , B33Y10/00 , B33Y30/00 , B33Y50/00 , B33Y50/02 , B33Y70/00 , C08J3/12 , C09D177/02 , G06F17/50 , B29K77/00 , B29K105/00
摘要： A polymeric powder composition for three-dimensional printing includes first, second, and third polymeric particles. The first particles, having a first average size, are present in an amount ranging from about 70 wt % to about 95 wt %. The second particles, having a second average size smaller than the first average size, are present in an amount ranging from about 0.5 wt % to about 21 wt %. The third particles, having a third average size smaller than the second average size, are present in an amount ranging from greater than 0 wt % up to about 21 wt %. Each of the first, second, and third average sizes independently ranges from 5 μm to about 100 μm. A sum of the fractional weight ratios of all of the polymeric particles in the polymeric powder composition equals 1.
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公开(公告)号：US10280299B2
公开(公告)日：2019-05-07
申请号：US14442621
申请日：2012-11-19
IPC分类号： C08L35/02 , C08F212/10 , C08J3/12 , C08L33/00 , C09D11/101 , C09D11/38 , C09D11/10 , B29C64/124 , B33Y70/00 , B33Y10/00
摘要： A composition for three-dimensional printing includes a liquid, curable, cross-linkable monomer, solid thermoplastic particles mixed with the liquid, curable, cross-linkable monomer, and a light sensitive initiator mixed with the liquid, curable, cross-linkable monomer. The solid thermoplastic particles have a size ranging from about 200 nm to about 50 μm.
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公开(公告)号：US20180126631A1
公开(公告)日：2018-05-10
申请号：US15568979
申请日：2015-07-23
发明人： Krzysztof Nauka , Howard S. Tom , Kristopher J. Erickson , Lihua Zhao , Sivapackia Ganapathiappan
IPC分类号： B29C64/153 , B33Y70/00 , C08K3/22 , C08K5/00 , C08L101/12 , C08L77/02 , C08L71/12
CPC分类号： B29C64/153 , B33Y70/00 , C08K3/20 , C08K3/22 , C08K3/30 , C08K3/32 , C08K5/00 , C08K5/0091 , C08K2003/2248 , C08K2201/005 , C08L71/12 , C08L77/02 , C08L101/00 , C08L101/12
摘要： A three-dimensional printing build material composition includes a polymer particle, and a radiation absorbing additive mixed with the polymer particle. The radiation absorbing additive has a particle size ranging from about 1 μm to about 100 μm, and the radiation absorbing additive is to absorb incident radiation having wavelengths ranging from 700 nm to 10 μm.
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公开(公告)号：US09921511B2
公开(公告)日：2018-03-20
申请号：US15122380
申请日：2014-04-28
发明人： Lihua Zhao , Yan Zhao , Doris Chun , Sivapackia Ganapathiappan , Hou T. Ng , Albert Teishev
IPC分类号： G03G9/13 , C09D11/037 , G03G9/08 , G03G9/12 , G03G9/125
CPC分类号： G03G9/131 , C09D11/037 , G03G9/0804 , G03G9/122 , G03G9/125
摘要： In an example of a method for making polymer-encapsulated metallic ink pigment particles, a layer of a transparent resin dispersion is disposed on a flexible substrate. The resin dispersion layer is substantially dried, and a base resin layer is formed. A slurry is disposed onto the base resin layer. The slurry includes metallic pigment particles and polymer particles dispersed in a non-aqueous carrier. The slurry is dried to form a metallic pigment-polymer sheet. Another layer of the transparent resin dispersion is disposed on the metallic pigment-polymer sheet and is dried. A coating resin layer is formed. The metallic pigment-polymer sheet and the base and coating transparent resin layers form a tri-layer film having the metallic pigment particles encapsulated between the base and coating transparent resin layers.
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公开(公告)号：US20170361505A1
公开(公告)日：2017-12-21
申请号：US15513965
申请日：2014-09-26
发明人： James Elmer Abbott, JR. , Alexander Govyadinov , Vladek Kasperchik , Krzysztof Nauka , Sivapackia Ganapathiappan , Lihua Zhao , Howard S. Tom, JR. , Yan Zhao , Hou T. Ng
IPC分类号： B29C35/08 , B29C67/00 , B29C64/165 , B29C64/205 , B29C64/386 , B33Y10/00
CPC分类号： B29C35/0805 , B29C64/165 , B29C64/205 , B29C64/291 , B29C64/386 , B29C67/0007 , B29C2035/0838 , B33Y10/00 , B33Y30/00
摘要： In one example, a lighting device for an additive manufacturing machine includes an array of light sources each to emit monochromatic light within a band of wavelengths that includes a peak light absorption of a liquid coalescing agent to be dispensed on to a build material.
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公开(公告)号：US20170225396A1
公开(公告)日：2017-08-10
申请号：US15121730
申请日：2014-04-30
发明人： Howard S. Tom , Hou T. Ng , Lihua Zhao , Sivapackia Ganapathiappan , Krzysztof Nauka , Yan Zhao
CPC分类号： B29C64/165 , B29K2105/0005 , B29K2105/0011 , B29K2105/251 , B33Y10/00 , B33Y30/00 , B33Y70/00
摘要： In a 3D printing method, a sinterable material is applied and heated to a temperature ranging from about 50° C. to about 400° C. A coalescent agent is selectively applied on a portion of the sinterable material, and a modifying agent is selectively applied on the portion and/or on another portion of the sinterable material. The modifying agent consists of an inorganic salt, a surfactant, a co-solvent, a humectant, a biocide, and water. The sinterable material is exposed to radiation, whereby the coalescent agent at least partially cures the portion of the sinterable material in contact with the coalescent agent, and the modifying agent i) reduces curing of the portion of the sinterable material in contact with both the coalescent agent and the modifying agent ii) prevents curing of the other portion of the sinterable material in contact with the modifying agent, or iii) both i and ii.
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公开(公告)号：US20160297143A1
公开(公告)日：2016-10-13
申请号：US15100584
申请日：2014-01-29
CPC分类号： B29C67/0081 , A01N43/80 , B29C64/00 , B29C64/165 , B29C64/386 , B29C64/40 , B29K2049/00 , B29K2105/16 , B33Y10/00 , B33Y70/00 , C09B47/045
摘要： In a 3D printing method, a coalescent dispersion for forming a 3D object is selected. The dispersion includes an aqueous vehicle and an infrared or near-infrared binding agent dissolved or dispersed therein. The binding agent is a phthalocyanine having a polar group attached to each side chain or a naphthalocyanine having a polar group attached to each side chain. A sinterable material is deposited and heated to a temperature ranging from about 50 C to about 350 C. The dispersion is selectively applied on at least a portion of the sinterable material. The sinterable material and the dispersion applied thereon are exposed to infrared or near-infrared radiation. The binding agent absorbs the radiation and converts it to thermal energy. At least the portion of the sinterable material in contact with the binding agent is at least cured to form a first layer of the 3D object.
摘要翻译： 在3D打印方法中，选择用于形成3D对象的聚结分散体。 分散体包括水性载体和溶解或分散在其中的红外或近红外粘合剂。 结合剂是具有连接到每个侧链的极性基团的酞菁或者具有连接到每个侧链的极性基团的萘酞菁。 将可烧结材料沉积并加热到约50℃至约350℃的温度。将分散体选择性地施加到可烧结材料的至少一部分上。 将可烧结材料和施加在其上的分散体暴露于红外或近红外辐射。 粘合剂吸收辐射并将其转换成热能。 至少与接合剂接触的可烧结材料的部分至少固化以形成3D物体的第一层。
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公开(公告)号：US11254068B2
公开(公告)日：2022-02-22
申请号：US15518229
申请日：2014-10-29
发明人： Hou T. Ng , Sivapackia Ganapathiappan , Alejandro Manuel De Pena , Edward Dale Davis , Ali Emamjomeh
IPC分类号： B29C67/24 , B29C64/165 , B22F1/00 , B29C64/153 , B22F10/10 , B33Y30/00 , B33Y10/00 , B33Y50/00 , B33Y50/02
摘要： In an example of a three-dimensional (3D) printing method, a build material (consisting of an inorganic particle and a polymer attached thereto) is applied. The polymer is a continuous coating having a thickness from about 3 nm to about 1500 nm, or nano-beads having an average diameter from about 3 nm to about 1500 nm. The build material is heated to a temperature from about 5° C. to about 50° C. below the polymer's melting point. A coalescent dispersion (including a coalescent agent and inorganic nanoparticles) is selectively applied on a portion of the build material, and the applied build material and coalescent dispersion are exposed to electromagnetic radiation. The coalescent dispersion absorbs the electromagnetic radiation and heats up the portion of the build material in contact therewith to fuse the portion of the build material in contact with the coalescent dispersion and to form a layer of a 3D object.
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公开(公告)号：US20210220913A1
公开(公告)日：2021-07-22
申请号：US17222666
申请日：2021-04-05
摘要： Example described herein include a three-dimensional printer a three-dimensional printing device that includes a fusible material applicator to apply a layer of fusible material, a inhibiting material applicator to apply a patterned layer of inhibiting material to establish exposed regions of the layer of fusible material and blocked regions of the layer of fusible material based on information corresponding to a three-dimensional model, and a photonic energy emitter to apply photonic energy to fuse the exposed regions of the layer of fusible material.
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