Abstract: A method for manufacturing a tower structure of a wind turbine includes printing, via an additive printing device, the tower structure of the wind turbine of a cementitious material. The method also includes printing, via the additive printing device, one or more additional airflow modifying features on an outer surface the tower structure of the wind turbine so as to reduce and/or prevent vortex shedding, excitation, and/or drag of the tower structure. Further, the method includes curing the cementitious material so as to form the tower structure.

Abstract: A preformer (1) is designed to extrude jointly a plurality of elastomer mixes in a direction of flow (X1), in order to form a profiled element, the preformer comprising for this purpose, superimposed in a direction of stacking (Z1), transverse to the direction of flow (X1), a first channel (11), a second channel (12) which is separated from the first channel (11) by a first partition (15), then a third channel (13), separated from the second channel (12) by a second partition (16), the preformer also comprising a stiffener (20) formed integrally with the first partition (15) and the second partition (16), and extends through the second channel (12), having a leading edge (21) which splits the flow of elastomer material following the second channel (12).

Abstract: The present disclosure provides an ice ball making box, including a first ice-making layer, a second ice-making layer, a third ice-making layer, an ice storage layer and an ice ball mold. The ice ball mold includes first ice mold bodies, second ice mold bodies arranged in the first ice-making layer and third ice mold bodies arranged in the third ice-making layer in sequence. Press-demolding parts are arranged in the first ice-making layer. The first ice mold body, the second ice mold body and the third ice mold body together form a spherical ice ball mold cavity. Water is filled into the ice ball mold cavity from the first ice-making layer via a water inlet passage of the first ice mold body. The ice ball making box can simultaneously mold and release a plurality of ice balls by pressing and store them together in the ice storage layer.

Abstract: Closure device suitable for a 3D printing device and/or coater device, comprising a closure means, wherein the closure means is activatable and can be opened by activating means, wherein the activating means is an eccentric, a draw key and/or a slotted link. The invention also relates to a method and a device for producing 3D mouldings, wherein such a closure device is used.

Abstract: A molding die according to the present disclosure includes a tubular portion and a base portion that closes an end portion of the tubular portion at one side. A cut level difference R?c1 in a roughness curve of an inner wall surface of the tubular portion is smaller than a cut level difference R?c2 in a roughness curve of an inner wall bottom portion of the base portion. The cut level difference represents a difference between a cut level at a load length ratio of 25% in a roughness curve and a cut level at a load length ratio of 75% in the roughness curve.

Abstract: A printing apparatus and method. The printing apparatus is for impinging liquids from at least two liquid sources. The apparatus comprises a first jet actuator configured to dispense a first liquid from a first liquid source and a second jet actuator configured to dispense a second liquid from a second liquid source. The apparatus further comprises an adjustment element configured to adjust a trajectory of at least the first liquid dispensed from the first jet actuator such that the first liquid impinges the second liquid dispensed from the second jet actuator.

Abstract: A jig includes mold parts that have a contact surface of a cylindrical part of a material to be molded having a shape complying with the inner peripheral surface of the cylindrical part and are arranged in a direction crossing one direction; a bladder that is provided on a side opposite to the contact surfaces of the plurality of mold parts relative to the mold parts, capable of accommodating a fluid therein, and expandable/retractable according to a pressure of the accommodated fluid; a joining part that joins the plurality of mold parts and the bladder; and a connection part that connects a one-side mold part and an another side mold part adjacent to the one-side mold part among a plurality of mold parts to each other and restricts an interval between the one-side mold part and the other-side mold part in a direction crossing the one direction with a prescribed range.

Abstract: An apparatus for restoring a deformed portion of a beverage preparation capsule to a shape that approximates its original shape. The apparatus comprises a seat configured to accommodate the capsule, a bending device configured to engage the deformed portion of the capsule, and a drive device to relatively move the bending device and at least part of the seat to cause the bending device to restore the deformed portion of the capsule to a shape that at least approximates its original shape.

Abstract: Disclosed are functional materials for use in additive manufacturing (AM). The functional material can comprise an elastomeric composition (e.g., a silicone composite) for use in, for example, direct ink writing. The elastomeric composition can include an elastomeric resin, and a magnetic nanorod filler dispersed within the elastomeric resin. Nanorod characteristics (e.g., length, diameter, aspect ratio) can be selected to create 3D-printed constructs with desired mechanical properties along different axes. Furthermore, since nickel nanorods are ferromagnetic, the spatial distribution and orientation of nanorods within the continuous phase can be controlled with an external magnetic field. This level of control over the nanostructure of the material system offers another degree of freedom in the design of functional parts and components with anisotropic properties. Magnetic fields can be used to remotely sense compression of the constructs, or alternatively, control the stiffness of these materials.

Abstract: A custom tool for forming a dental restoration in a mouth of a patient includes a first mold body providing for a customized fit with at least one tooth of the patient. The first mold body includes a portion corresponding with at least a first surface of the tooth and an interproximal portion corresponding with an interproximal surface of the tooth, the interproximal portion being of unitary construction. The first mold body is configured to combine with the tooth of the patient to form a mold cavity encompassing a first portion of missing tooth structure of the tooth.

Abstract: An apparatus for extruding a jacket and/or insulative material onto an extruded product with one or more longitudinal stripes incorporated onto the surface of said extruded product comprising a body, a primary feed conduit for conveying a primary extrusion material, a striping die, a secondary feed conduit for conveying a secondary extrusion material, a striping die adapter, a striping feed conduit extending through the striping die adapter for conveying striping extrusion material. The striping die adapter may also include a thermocouple for maintaining the viscosity of the striping extrusion material and a thermocouple for monitoring the temperature of said striping die adapter. The striping die includes one or more striping extrusion outlets for conveying striping extrusion material onto the extruded product. The striping die may also include a wishbone-shaped trough for delivering equal amounts of striping extrusion material to said extrusion outlets for extrusion onto the product.

Abstract: A felt gripper head contains two regions of felt material each on plates that slide and form a slight angle with respect to each other during engagement with a fibrous substrate material.

Abstract: Liquid ink compositions containing quantum dots for optoelectronic display applications are provided. Also provided are solid films formed by drying the ink compositions, optical elements incorporating the solid films, display devices incorporating the optical elements, and methods of forming the solid films, optical elements, and the devices. Liquid ink compositions and solid films made by drying the liquid ink compositions include one or more blue light-absorbing materials in combination with red light-emitting QDs or green light-emitting QDs.

Abstract: An injection molding system (1000) comprising: an actuator (5) having a housing (20) comprised of radial (20r, 20ri, 20ro, 20roa, 20rob, 20roc, 20rod) and axial walls (20a, 20ai, 20aue, 20ade) that form an enclosed chamber (45) containing a heat conductive chamber fluid (CF), a rotor and driver driven by electrical energy and supported within the chamber by the radial and axial walls, wherein one or more of the radial and axial walls comprise a heat conductive material that has an inner surface disposed in heat conductive contact with the heat conductive fluid (CF) contained within the enclosed chamber, an actuator tube or channel (25) disposed within the one or more of the radial and axial walls, a source (260) of heat absorptive fluid (25f) sealably interconnected to the actuator tube or channel (25).

Abstract: The present invention relates to a powder of spherical crosslinkable polyamide particles, which is suitable for the selective laser sintering (SLS) technique, and also to a process for obtaining such a powder of spherical crosslinkable polyamide particles. The present invention also relates to the production of articles by SLS, followed by a crosslinking step, using said powder of spherical crosslinkable polyamide particles.

Abstract: In an aspect, a kit for forming crafts from a moldable material is provided. The kit includes a housing with a molding passage therethrough that holds a volume of moldable material. The housing includes open first and second axial ends for insertion therein of a core element connected to a plunger element. The core element includes a passage with an open end, such that when the core element is inserted through one of the axial ends and into the volume of the moldable material in the molding passage, the passage can capture a core quantity of the moldable material therein, and remove the core quantity of the moldable material from housing. The plunger element is also formed to be inverted and inserted through one of the first and second axial ends to extrude a quantity of the moldable material out through the other of the axial ends of the housing.

Abstract: The invention relates to a computer-implemented method for providing a template for a casting matrix configured for casting one or more artificial gingiva parts of a removable denture. The casting matrix comprises one or more recesses. Each of the recesses has a 3D geometric form, which is a negative of a 3D geometric form of a section of the removable denture with one of the artificial gingiva parts to be casted.

Abstract: The present invention is directed to a 3D-printed tire segment model having a tread portion comprising a plurality of grooves, ribs and/or tread blocks, and a plurality of blades extending out of the ribs and/or tread blocks, wherein the tire segment model is made of a 3D-printed polymer. Moreover, the present invention is drawn to a method of making a tire mold segment, including the step of 3D-printing the above tire segment model with a polymer.

Abstract: A method for producing highly spherical polymer particles comprising a polyamide having an optical absorber in a backbone of the polyamide (IBOA-polyamide) may comprise: mixing a mixture comprising the IBOA-polyamide, a carrier fluid that is immiscible with the IBOA-polyamide, and optionally an emulsion stabilizer at a temperature greater than a melting point or softening temperature of the IBOA-polyamide and at a shear rate sufficiently high to disperse the IBOA-polyamide in the carrier fluid; and cooling the mixture to below the melting point or softening temperature of the IBOA-polyamide to form particles comprising the IBOA-polyamide and the emulsion stabilizer, when present, associated with an outer surface of the particles.

Abstract: A molded resin component includes a first surface on which a convex portion is formed, and a second surface opposite to the first surface. The convex portion includes a molding mark formed by a valve pin of a manufacturing apparatus that manufactured the molded resin component. A shape of at least a portion of a leading-end surface of the valve pin is not transferred into the molding mark.