Abstract: A direct ink writing device and method for a bias-controllable continuous fiber reinforced composite material are provided. The device includes a cartridge fixed by an external device, a bottom of the cartridge is connected to a nozzle. A piston is arranged in the cartridge, the piston is provided with a chamber for containing sealing liquid and a capillary for a continuous fiber to pass through. The centers of an inner circumference and an outer circumference of the cartridge do not coincide with each other. The bias position of the continuous fiber in the composite material is achieved using the piston, and each filament of composite material is printed in steps of rotation, extrusion, revolution and curing. A structure produced according to the disclosure has high mechanical properties and outstanding intelligent properties, and the bias position of the continuous fiber material in the structure can be accurately adjusted.

Abstract: The present invention relates to systems and methods for solid freeform fabrication, especially selective laser sintering, as well as various articles made using the same, where the systems and methods utilize certain thermoplastic polyurethanes which are particularly suited for such processing. The useful thermoplastic polyurethanes are derived from (a) a polyisocyanate component, (b) a polyol component, and (c) an optional chain extender component; wherein the resulting thermoplastic polyurethane has a melting enthalpy of at least 5.5J/g, a Tc (crystallization temperature) of more than 70° C., a ?(Tm:Tc) of from 20 to 75 degrees, where ?(Tm:Tc) is the difference between the Tm (melting temperature) and Tc.

Abstract: The present invention is directed to a golf ball having a non-planar parting line on its spherical surface.

Abstract: An additive manufacturing (AM) method includes using an AM tool to fabricate a plurality of workpiece products; measuring qualities of the first workpiece products respectively; performing a temperature measurement on each of the melt pools on the powder bed; performing photography on each of the melt pools on the powder bed; extracting a length and a width of each of the melt pools; performing a melt-pool feature processing operation; first converting each of the workspace images to a gray level co-occurrence matrix (GLCM); building a conjecture model by using a plurality of sets of first process data and the actual metrology values of the first workpiece products in accordance with a prediction algorithm; and predicting a virtual metrology value of the second workpiece product by using the conjecture model based on a set of second process data.

Abstract: An injection molding apparatus (5) comprising an injection molding machine (IMM), a heated manifold (60) that receives injection fluid (9) and distributes the injection fluid through a fluid distribution channel (120), a mold (70) having a cavity (80) and one or more valves (50) having a valve pin (100) the one or more valves (50) being comprised of: an electrically driven actuator (200), a controller including an algorithm that controllably limits rotation of a shaft (12) or output rotation device (16, 430, 500) during the course of an entire injection cycle to selectable angular positions that create a moment arm that extends between selected a selected minimum moment arm and a selected maximum moment arm, the selectable angular positions being between 70 degrees above and 70 degrees below an angular position that corresponds to the selected maximum moment arm.

Abstract: The present invention is directed to a golf ball having a non-planar parting line on its spherical surface.

Abstract: A method of forming a model of a porous structure includes three dimensionally printing a mold of the porous structure using a polycaprolactone mold material, filling the mold with a polymer mixture, and heating the filled mold at a temperature above a melting temperature of the mold material to cure the polymer mixture, where the cured polymer mixture forms the model of the porous structure.

Abstract: An injection molding apparatus (5) comprising: an actuator (10) comprising a thermally conductive housing body (12) mounted in direct heat or thermally conductive contact with one or more mounts (60, 50, 803) that are in turn mounted in direct heat conductive contact or communication with the manifold (20), the cooling device (500, 800) comprising a heat transmitter comprised of an arm, member (502) or leg (800I) that is either: disposed in direct or integral thermal contact with a complementary surface (12Is) of the actuator (10) or, configured to have compressible spring joints (800s).

Abstract: The present disclosure is directed to a physically crosslinked, closed cell continuous multilayer foam structure comprising at least one foam polypropylene/polyethylene layer with a TPU cap layer. The multilayer foam structure can be obtained by coextruding a multilayer structure comprising at least one foam composition layer with at least one cap composition layer, irradiating the coextruded structure with ionizing radiation, and continuously foaming the irradiated structure.

Abstract: An Injection molding apparatus injection molding apparatus (10a) comprising: one or more first downstream channels (166, 166a, 166b) and associated first gates (34, 34a, 34b) that deliver injection fluid (18) to a first cavity (300a) of a mold system (302, 303) and to one or more second downstream channels (168, 168a, 168b) and associated second gates (32, 32a, 32b) that deliver injection fluid to a second cavity (300b) of the mold system (302, 303), the mold system being clamped together under a selected force, the apparatus including a first upstream valve (118) that enables and disables flow of the injection fluid to the first gates (34, 34a, 34b) and a second upstream valve (108) that enables and disables flow of the injection fluid to the one or more second gates (32, 32a, 32b), the apparatus including a control system (20) adapted to open or enable flow of the injection fluid (18) to the one or more first gates (34, 34a, 34b) at a first selected time and to further instruct the second upstream valve

Abstract: The present invention relates to a process for producing a shaped body, wherein, in step i), a layer of a sinter powder (SP) comprising at least one mineral flame retardant inter alia is provided and, in step ii), the layer provided in step i) is exposed. The present invention further relates to a process for producing a sinter powder (SP) and to a sinter powder (SP) obtainable by this process. The present invention also relates to the use of the sinter powder (SP) in a sintering process and to shaped bodies obtainable by the process of the invention.

Abstract: A three-dimensional shaping device includes: a material storage unit and a mouth portion which is provided below the body portion and which has a hole with a diameter smaller than a maximum inner diameter of the body portion, a material supply unit configured to supply a material to the material storage unit, a melting unit configured to melt the material supplied through the mouth portion, a nozzle configured to discharge the shaping material toward a stage, a remaining state detection unit configured to detect a remaining state of the material, a remaining amount determination unit configured to determine whether a remaining amount of the material is less than a first reference value based on the remaining state, and a control unit configured to supply, when the remaining amount is less than the first reference value, the material to the material storage unit.

Abstract: The invention relates to a process of processing a radiation-curable composition with an additive-manufacturing technique comprising a radiation-curing step, the radiation-curable composition comprising mercapto-functional Component A comprising at least three mercapto moieties, crosslinker Component B with at least three vinyl or allyl moieties, photo-initiator(s) Component C for initiating a curing reaction between Component A and Component B, wherein the radiation-curable composition does not comprise urethane (meth)acrylate oligomers in an amount of more than 4 wt. % with respect to the whole composition. 3-dim articles which can be produced are typically transparent and have adequate mechanical properties. The radiation-curable composition is in particular useful for producing clear-tray aligners for dental and orthodontic purposes.

Abstract: An injection molding apparatus includes a plasticizing portion, a measurement injection portion that is disposed between the plasticizing portion and a molding mold, measures the plasticized material, and injects the measured plasticized material into the molding mold, a first drive portion changing a relative position between the plasticizing portion and the measurement injection portion, a pressure detection portion detecting a pressure inside the measurement injection portion and a control portion, in which the measurement injection portion is configured such that a volume of an internal space thereof, in which the plasticized material is stored, changes according to a change in the relative position between the measurement injection portion and the plasticizing portion, and the control portion executes at least one of a measurement operation of causing the measurement injection portion to measure the plasticized material by controlling the first drive portion to move the plasticizing portion and the measu

Abstract: The subject matter relates generally to devices configured to be attached to fingers and/or the hands of persons and which may aid in the playing of musical instruments. These devices are custom made to fit the fingers of a particular musician or aspiring musician precisely and optionally include an additional feature or element at the tip which beneficially improves the ability to play. These devices also may protect the fingers from the adverse effects of prolonged playing. These devices may be used independently on each finger, or may be combined together into a glove with the finger devices attached to the rest of a custom fitting glove.

Abstract: A polymer optical fiber is provided which shows improved hydrolytic stability. This fiber comprises a polymeric optical core and cladding layer, surrounded by a polymeric overcladding layer which comprises a miscible blend of one or more hydrolytically stable amorphous polymers. By varying the ratios of the component polymers in the overcladding blend, the glass transition temperature and the coefficient of thermal expansion of the overcladding layer may be tuned to optimize the attenuation and bandwidth of the plastic optical fiber.

Abstract: The invention relates to a cable comprising layer(s), which layer(s), is/are obtained from a polymer composition, wherein the polymer composition comprises a polyethylene and a crosslinking agent, wherein the polymer composition contains a total amount of vinyl groups which is B vinyl groups per 1000 carbon atoms, and B1?B, wherein B1 is 0.88, when measured prior to crosslinking according to method ASTM D6248-98; and wherein the crosslinking agent is present in an amount which is Z wt %, prior to crosslinking, based on the total amount (100 wt %) of the polymer composition, and Z?Z2, wherein Z2 is 0.60, the cable, e.g. being a power cable, and processes for producing the cable; the cable useful in different end applications, such as wire and cable (W&C) applications.

Abstract: The present disclosure relates to a system for performing an Additive Manufacturing (AM) fabrication process on a powdered material (PM) forming a substrate. The system uses a first optical subsystem to generate an optical signal comprised of electromagnetic (EM) radiation sufficient to melt or sinter a PM of the substrate. The first optical subsystem is controlled to generate a plurality of different power density levels, with a specific one being selected based on a specific PM forming a powder bed being used to form a 3D part. At least one processor controls the first optical subsystem and adjusts a power density level of the optical signal, taking into account a composition of the PM. A second optical subsystem receives the optical signal from the first optical subsystem and controls the optical signal to help facilitate melting of the PM in a layer-by-layer sequence of operations.

Abstract: Rib- or fin-shaped element (1, 10) comprising an anchoring part (1 b1, 10b1) and a molding part (1b2, 10b2), wherein the anchoring part (1 b1, 10b1) can be anchored in a profile ring segment of a profile ring of a vulcanizing mold that molds the tread of a vehicle tire and the molding part (1 b2, 10b2) is provided for molding a sipe or a groove in the tread. The element (1, 10) has at least one elongate projection (1a, 11), which forms a bevel at the periphery of the tread and is produced by means of selective laser melting.

Abstract: Provided is an improved mold structure, including a first mold base, a second mold base and two controllers. The first mold base and the second mold base are operably aligned. When the first mold base and the second mold base are in an aligned state, a mold cavity is jointly framed. Two gas passages, a first mold core and a second mold core are provided. The first mold base is provided with a runner. Two ends thereof are respectively connected to a material tube and a mold cavity of a molding machine. The first and second mold cores are made of porous material. Vent pipelines thereof are connected to the respective gas passages. The two controllers are respectively connected to the gas passages, and control the gas in and out such that the pressure in different areas in the mold cavity reaches a predetermined value, thereby controlling the flow direction of the raw material in the mold cavity.