921results about "Additive manufacturing processes" patented technology

This invention combines the precision spray process with in-flight laser treatment in order to produce direct write electronic components. In addition to these components, the process can lay down lines of conductive, inductive, and resistive materials. This development has the potential to change the approach to electronics packaging. This process is revolutionary in that components can be directly produced on small structures, thus removing the need for printed circuit boards.

A process and apparatus are provided for manufacturing complex parts and devices which utilize a CAD environment to design a part or device to be created (FIG. 1); Boolean, scaling, smoothing, mirroring, or other operations to modify the CAD design; a software interface to convert the CAD designed part (Data Process System) or device into a heterogeneous material and multi-part assembly model (Design Input Model) which can be used for multi-nozzle printing; and a multi-nozzle system to print the designed part or device using different, specialized nozzles (Tissue substitutes).

An indirect solid free form scaffold manufacturing technique is provided. More particularly, the present invention provides a set of molds, casting methods, mold removals, and surface modification techniques that are compatible with image-based design methods and with solvent, melt, and slurry casting of polymers and ceramics.

To provide simple yet accurate stent graft fenestration, a patient-specific fenestration template is used as a guide for graft fenestration. To generate the fenestration template, a patient's medical imaging data such as CT scan data may be used to generate a 3-D digital model of an aorta lumen of the patient. The aorta lumen may encompass one or more branch vessels, which may be indicated on the 3-D digital model. Based on the 3-D digital model or a segment thereof, the fenestration template may be generated, for example, using 3-D printing technology. The fenestration template may include one or more holes or openings that correspond to the one or more branch vessels. To fenestrate a stent graft, the fenestration template is coupled to the stent graft so that the holes or openings on the fenestration template indicate the fenestration locations.

The invention discloses a 3D printing method for a continuous fibre-reinforced thermoplastic resin matrix composite material, and a printing head. According to the method, fibre bundles and molten thermoplastic resins can be subjected to rotary blending and then subjected to rotary extrusion, and extruded wires are spiral; and the printing head is capable of charging the fibre bundles and the thermoplastic resins in a melting cavity, and spiral tooth rings are arranged at the inner sides of the melting cavity and an extrusion head, and rotate in opposite directions. The heated-molten resins and fibres are stirred by the spiral tooth rings which bidirectionally rotate after being blended, so that the fibres are compactly wound into a spiral column shape from a flat shape, the resins are uniformly distributed in each fibre orientation, and then a blend is extruded to a forming area from an extrusion port and cooled and cured to form a spatial entity. According to the method and the printing head, which are disclosed by the invention, the flat large-tow fibres can be used as reinforcements in a 3D printing process, the compactly-wound fibres have a high compaction degree, the fibres and the matrixes are adequately soaked, and the formed fibres and resins are uniformly distributed; and therefore, the method and the printing head are capable of greatly improving the mechanical property of a member, and improving the forming quality.

An ion-conducting composite electrolyte is provided comprising path-engineered ion-conducting ceramic electrolyte particles and a solid polymeric matrix. The path-engineered particles are characterized by an anisotropic crystalline structure and the ionic conductivity of the crystalline structure in a preferred conductivity direction H associated with one of the crystal planes of the path-engineered particle is larger than the ionic conductivity of the crystalline structure in a reduced conductivity direction L associated with another of the crystal planes of the path-engineered particle. The path-engineered particles are sized and positioned in the polymeric matrix such that a majority of the path-engineered particles breach both of the opposite major faces of the matrix body and are oriented in the polymeric matrix such that the preferred conductivity direction H is more closely aligned with a minimum path length spanning a thickness of the matrix body than is the reduced conductivity direction L.

A part is fabricated by an additive manufacturing process while levitating in space. Constituent features of the part are formed by 3-D printing. A part levitation system allows the spatial orientation of the part to be manipulated relative to one or more print heads.

In an aspect, a composite material system comprises: a structure having an architected three-dimensional geometry; wherein said three-dimensional geometry is monolithic and deterministic; and a matrix phase; wherein said matrix phase at least partially infiltrates said structure. In some embodiments, the three-dimensional geometry is a nano- or micro-architected three-dimensional geometry.

The present invention generally relates to methods and apparatuses adapted to perform additive manufacturing (AM) processes and the resulting products made therefrom, and specifically, to AM processes that employ an energy beam to selectively fuse a base material to produce an object. More particularly, the invention relates to methods and systems that use reactive fluids to actively manipulate the surface chemistry of the base material prior to, during and/or after the AM process.

This invention provides resin formulations which may be used for 3D printing and pyrolyzing to produce a ceramic matrix composite. The resin formulations contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material. The invention provides direct, free-form 3D printing of a preceramic polymer loaded with a solid-phase filler, followed by converting the preceramic polymer to a 3D-printed ceramic matrix composite with potentially complex 3D shapes or in the form of large parts. Other variations provide active solid-phase functional additives as solid-phase fillers, to perform or enhance at least one chemical, physical, mechanical, or electrical function within the ceramic structure as it is being formed as well as in the final structure. Solid-phase functional additives actively improve the final ceramic structure through one or more changes actively induced by the additives during pyrolysis or other thermal treatment.

A component is provided that includes at least one passageway. In another aspect, a component, such as a lamp or a vehicular washer jet, is made of layers of material, a light curable material and/or multiple built-up materials. Another aspect uses a three-dimensional printing machine to emit material from an ink jet printing head to build up a component.

This invention provides resin formulations which may be used for 3D printing and pyrolyzing to produce a ceramic matrix composite. The resin formulations contain a solid-phase filler, to provide high thermal stability and mechanical strength (e.g., fracture toughness) in the final ceramic material. The invention provides direct, free-form 3D printing of a preceramic polymer loaded with a solid-phase filler, followed by converting the preceramic polymer to a 3D-printed ceramic matrix composite with potentially complex 3D shapes or in the form of large parts. Other variations provide active solid-phase functional additives as solid-phase fillers, to perform or enhance at least one chemical, physical, mechanical, or electrical function within the ceramic structure as it is being formed as well as in the final structure. Solid-phase functional additives actively improve the final ceramic structure through one or more changes actively induced by the additives during pyrolysis or other thermal treatment.

The invention relates to a rapid denture forming method. The rapid denture forming method comprises the following steps: scanning teeth by using an oral scanner, and forming an initial tooth model; pretreating the initial tooth model; matching the pretreated tooth model with tooth shapes in a tooth shape database, and selecting the tooth shapes with highest matching degree; compiling selected tooth shapes according to an international denture repairing standard, thus obtaining a tooth model which is finally required; carrying out 3D (Three-Dimensional) printing to obtain the denture according to the tooth model which is finally obtained. By adopting the rapid denture forming method disclosed by the invention, the denture forming steps are simple, the forming time is greatly shortened, and the denture forming accuracy is high; the manufacturing cost of the denture is greatly reduced, and promotion and use of the technology are convenient.

The invention provides a process for the production of a (particulate) luminescent material comprising particles, especially substantially spherical particles, having a porous inorganic material core with pores, especially macro pores, which are at least partly filled with a polymeric material with a first material embedded therein, wherein the process comprises (i) impregnating the particles of a particulate porous inorganic material with pores with a first liquid (“ink”) comprising the first material and a curable or polymerizable precursor of the polymeric material, to provide pores that are at least partly filled with said first material and curable or polymerizable precursor; and (ii) curing or polymerizing the curable or polymerizable precursor within pores of the porous material, as well as a product obtainable thereby. The first material comprises one or more materials selected from a group of materials comprising organic luminescent materials, rare-earth luminescent materials, organic dye materials, inorganic dye materials, thermochromic materials, photochromic materials, liquid crystal materials, magnetic materials, scattering materials, high-refractive index materials, radio-active materials, contrast agents and therapeutic agents.

A system includes a layered structure. The layered structure includes first and second coalesced layers and an intermediate layer disposed between the first and second coalesced layers. The first and second coalesced layers have a higher degree of coalescence than the intermediate layer.

The invention discloses a three-dimensional negative Poisson ratio periodic porous material and a preparation method thereof. The material is formed by splicing two rotating modules in an alternate mode; the projection shapes in the horizontal X direction and the horizontal Y direction are the same, and the projection in the vertical direction is an orthogonal square grid; when the material is subjected to stress, an inward contraction effect is produced; and when the material is subjected to pulling force, an expansion property is produced. The preparation method uses the 3D printing technology to achieve the three-dimensional negative Poisson ratio property. According to the three-dimensional negative Poisson ratio periodic porous material, the negative Poisson ratio property of a three-dimensional space is achieved; when pulled in the vertical direction, the material is expanded in the two horizontal directions; when the material is pressed in the vertical direction, the inward contraction property is produced in the two horizontal directions; and during expansion and contraction of the material, both modules in the material rotate in the direction of the concave surfaces around angular points. The negative Poisson ratio material further has good effects of energy dissipation and sound absorption and can be used for energy dissipation materials in the military field and sound insulation materials in daily life.

The invention relates to an individualized meniscus forming method based on 3D printing, a meniscus, a meniscus die and a manufacturing method. The forming method includes the steps that knee joint image data of an individual are acquired; the acquired knee joint image data are guided in medical reverse software, and a meniscus three-dimensional model is obtained after processing is completed; themeniscus three-dimensional model is guided in reverse engineering software, a model triangular patch is optimized and guided in design software for turnover operation, and a die model is manufactured; a transparent material is adopted for 3D printing, and a physical transparent meniscus die is obtained; and light-sensitive hydrogel is poured into the machined meniscus die, curing and forming arecarried out through ultraviolet or infrared or visible light irradiation, and the individualized meniscus is obtained. The meniscus three-dimensional model is established based on the knee joint imagedata of the individual, the transparent die is designed and printed through 3D printing, the light-sensitive hydrogel is injected, curing and forming are completed after light irradiation, the stentprecision is improved, and the mechanical strength is guaranteed.