Abstract: The purpose of the present invention is to provide a liquid resin composition which includes polysaccharide nanofibres, and which is used in a three-dimensional moulding production method in which a moulding obtained by curing the resin composition by irradiating the resin composition with active energy rays is three-dimensionally formed, wherein unevenness in strength in the height direction is not readily produced in the formed three-dimensional moulding. The present invention relates to a liquid resin composition which is used to produce a three-dimensional moulding, and which three-dimensionally forms a moulding as a result of being cured by being selectively irradiated with active energy rays. The resin composition includes an active energy ray-curable compound and polysaccharide nanofibres. The ratio of the number of polysaccharide nanofibres having a branched structure to the total number of polysaccharide nanofibres is less than 20%.

Abstract: The present disclosure generally relates to nanostructure manufacturing. A method for fabricating an imprint template includes providing a first substrate including a first electrode layer on a first base layer and a plurality of first convex portions on a surface of the first electrode layer; providing a second substrate including a second electrode layer on a second base layer, a second resist layer on the second electrode layer, and a plurality of second convex portions on a surface of the second resist layer farthest from the second base layer, supplying electrical signals to the first electrode layer and the second electrode layer to produce an electric field between the plurality of first convex portions and the plurality of second convex portions; and forming the imprint template on the second substrate.

Abstract: An apparatus for establishing an offset bend in a plastic conduit section having ends and a radius includes a tabletop surface having a front edge, a rear edge, and two side edges; a base surface adjacent the front edge, wherein the base surface is perpendicular to the tabletop surface; an offset block secured on the tabletop surface parallel with and spaced apart from the base surface; a hot box disposed adjacent the tabletop surface and configured to heat plastic conduit; and a water drainage system disposed adjacent the tabletop surface and configured to remove water from the tabletop surface.

Abstract: Prestressed carbon fibers of at least one textile structure comprising carbon fibers are embedded in a concrete matrix. At least one textile structure comprising carbon fiber bundles is laid in a mold at a distance from one another, into two accommodation elements which are arranged at two diametrical end faces of the mold. Hollow spaces within the accommodation element are filled with a rapid-curing viscous composition having a mineral basis or rapid-curing polymer. After curing the composition or of the polymer, tensile forces act on the accommodation element(s) in the longitudinal direction of the carbon fiber bundles with a tensioning device. During the tensile force the interior of the mold is subsequently filled completely with viscous concrete. After curing of the concrete, the tensile forces on the prestressed carbon fiber bundles are largely transferred to the cured concrete and the concrete component can then be removed from the mold.

Abstract: The invention relates to a method for producing an object from different powdered components by means of additive manufacturing, wherein a plurality of powdered components having different melting points are simultaneously placed in precise positions, and the powder coating (1) is subsequently thermally treated. The construction material is, for example, polyether ether ketone (PEEK), polyaryl ether ketone (PAEK), polyether ketone ketone (PEKK), polyether sulfone, polyimide, polyether imide, polyester, polyamides, polycarbonates, polyurethanes, polyvinyl chloride, polyoxymethylene, polyvinyl acetate, polyacrylates, polymethacrylates, polyethylene, polypropylene, polylactide, ABS (acrylonitrile butadiene styrene copolymers), PETG (glycol modified polyethylene terephthalate), polystyrene, or mixtures thereof. The supporting material is an inorganic salt of the alkali metals, an inorganic salt of the alkaline earth metals, or a mixture thereof.

Abstract: The invention relates to a method for the online monitoring of film quality during a production process for a plastic film, in particular a blown film or a continuously cast film, in which method the film material (1) is fed out of an outlet device (40) that is designed as a melt lug (4) by a transport device (10). The film material (1) cools on or in front of the transport device (10) and the film material (1) solidifies in front of or on the transport device (10).

Abstract: According to some aspects, techniques are provided to more accurately produce fine features in additive fabrication. According to some embodiments, the techniques comprise a process that amplifies exposure to edges and thin positive features whilst not substantially affecting negative features. In particular, an area to be cured may be adapted using signal processing techniques to produce an energy density map. The area may subsequently be cured according to the generated energy density map by, for example, adjusting the scan speed, light power and/or number of passes of the light beam according to the map. As a result, the net exposure to edges and thin positive features may be amplified.

Abstract: An additive manufacturing system includes a heater for converting a filament of extrusion material into thermoplastic material. The heater has a channel configured to change the cross-sectional shape of the filament to a cross-sectional shape that has a greater surface area than the surface area of the filament before the heater receives the filament. The channel of the heater can also be configured to drive the center portion of the filament toward the heated walls of the channel and to mix thermoplastic material in the channel while exposing the center portion of the filament to the heated wall of the channel.

Abstract: An additive manufacturing method wherein the carrier (400) is within a vessel (100), the vessel contains the free-radically crosslinkable resin (300) and a liquid (200) which is immiscible with the free-radically cross-linkable resin (300) and has a higher density than the free-radically crosslinkable resin (300), such that the free-radically crosslinkable resin (300) floats on top of the liquid (200) and, prior to each step II), the distance between the carrier (400) and the free-radically crosslinkable resin (300) is altered such that a layer of the free-radically crosslinkable resin forms above the uppermost surface (420), viewed in vertical direction, of the previously deposited layer of the construction material (600) and at least partially forms contact with this uppermost surface (420) of the previously deposited layer of the construction material (600). The free-radically crosslinkable resin (300) comprises a urethane (meth)acrylate.

Abstract: Provided herein is an apparatus for producing three-dimensional objects by additive manufacturing, which may include: (a) optionally a window permeable to an inhibitor of polymerization; (b) a window mount to which the window is secured when the window is present; (c) optionally a carrier platform on which the three-dimensional object can be produced; (d) a carrier platform mount operatively associated with the window mount; (e) a drive assembly operatively associated with the window mount and the carrier platform mount; (f) a light source operatively associated with the window mount operatively associated with a patterning array; (g) an inhibitor of polymerization supply configured for operative association with the feed surface when present; and (h) at least one or two reactant supplies configured for operative association with the feed surface when present. Methods of making a three-dimensional object from a polymerization liquid that may use such apparatus are also provided.

Abstract: Systems, apparatuses, and methods for reducing humidity of air adjacent to a nozzle of an electrospinning apparatus, charged solution output by the nozzle, a solution path between the nozzle and a deposit surface, and/or the deposit surface. The apparatus can be configured to controllably output the charged solution and gas of a predetermined dryness for deposit of the charged solution on the deposit surface. The gas of the predetermined dryness can be provided adjacent to a nozzle tip of the nozzle from where the charged solution is output. The gas of the predetermined dryness may be output in a predetermined direction toward a focal point at, in front of, or behind the nozzle tip.

Abstract: The present invention provides a molding apparatus that performs a molding process for molding a composition on a substrate using a mold, including a holding unit configured to hold the substrate, and a control unit configured to control the molding process, wherein the control unit starts a process for pressing the mold against the composition on the substrate while the substrate is held by the holding unit with a first holding force, causes the holding unit to hold the substrate with a second holding force smaller than the first holding force after the process is started, and maintains the holding of the substrate by the holding unit with the second holding force until completion of filling of the composition on the substrate into the mold.

Abstract: A mold apparatus for producing a molded article by injection molding includes (a) a base plate for mounting to a platen of an injection molding machine; and (b) a core plate movably coupled to the base plate and axially translatable relative to the base plate between a plate advanced position and a plate retracted position. A method of resetting the core plate includes energizing a mechanical actuator in a retraction direction to exert a retraction force against the core plate and axially translate the core plate relative to a base plate from the plate advanced (molded part ejection) position to a plate retracted (mold injection) position; and then, prior to applying clamping tonnage, relieving the retraction force to axially unload the mechanical actuator, wherein the actuator is isolated from axial force exerted across the mold during application of the clamping tonnage.

Abstract: An injection moulding tool for producing at least one injection-moulded part with an outer shape and an inner shape includes at least one cavity and, for every cavity, one hot-runner nozzle connected thereto, which has an annular nozzle mouth for injecting at least one melt into the cavity. The at least one cavity is formed by a cooled die, which forms the outer form for the outer shape of the injection-moulded part to be produced, and by a core, which forms the inner form for the inner shape of the injection-moulded part to be produced. The hot-runner nozzle has a nozzle core and a hollow needle, which can be moved along the nozzle core for opening and closing the annular nozzle mouth. The nozzle core protrudes beyond the annular nozzle mouth of the hot-runner nozzle and the nozzle core forms the core of the cavity of the injection mould.

Abstract: A mold clamping device includes a base, a stationary platen fixed to the base and supporting a stationary mold, a movable platen movable on the base and supporting a movable mold, and a mold clamping mechanism for clamping the movable mold against the stationary mold. Tie bars extend from the stationary platen completely through both the movable platen and the mold clamping mechanism. A shaft supporting plate is fixed to the base and has openings through which the tie bars slidably extend for supporting the tie bars. The shaft supporting plate terminates at its lower end portion in two spaced-apart shoes that are fixed to the base. The bottom surface of each shoe has a larger area than the cross-sectional area of the shaft supporting plate situated vertically above the shoe.

Abstract: Systems and methods of additive manufacturing are provided, in which solid polymer material in form of strand(s) or particles is continuously received, and its surface is heated peripherally to liquefy the surface, using specified heating-related parameters which are selected to maintain a central volume of the continuously received solid polymer material in a solid state. The surface of a polymer substrate is also liquefied, and the peripherally heated surface of the continuously received solid polymer material is attached to the liquefied surface of the polymer substrate, followed by re-solidification of the liquefied surface to yield monolithic attachment of the material to the substrate. Liquefying only the surface of the material maintains some of its strength and prevents deformation upon solidification. The monolithic attachment provides uniform and controllable industrial products.

Abstract: A plasticizing device includes a first member having a groove portion that has a spiral shape extending to a center, a motor that rotates the first member, a second member that faces the first member, and a heating unit for heating a material that is transported along the groove portion, the first member having a plurality of recessed portions on a bottom surface of the groove portion. By providing a plurality of recessed portions on the bottom surface of the first member through which the material flows, the rotational force of the rotating first member is easily transmitted to the material and the amount of material flowing in the first member can be increased.

Abstract: An additive manufacturing apparatus includes a platform, a dispenser configured to deliver a plurality of successive layers of feed material on a platform, a light source configured to generate a light beam, an auxiliary polygon mirror scanner configured to receive the light beam from the light source and reflect the light beam, and a primary mirror scanner to receive the light beam reflected by the auxiliary polygon mirror scanner and direct the light beam to impinge on an exposed layer of feed material.

Abstract: Techniques for film tensioning in additive fabrication are provided. According to some aspects, a film forming part of a container in an additive fabrication device may be tensioned by different forces along different axes. According to some embodiments, an adjustable tensioning system may be provided within an additive fabrication device that may couple to one or more components of a removable container comprising a film. The tension of the film may be adjusted by the additive fabrication device via the adjustable tensioning system and its coupling to the container.

Abstract: There is disclosed additive manufacturing apparatus (10), (22), (34) comprising: a heater (18), (36) to direct radiant heat onto an irradiation region (20) of a build platform (12), at least part of the heater (18), (36) being moveable to cause the irradiation region (20) to traverse over the build platform (12); a coating module (14) moveable relative the heater (18), (36) to traverse the build platform (12) to apply a build material onto the build platform (12); and a print module (16) moveable relative the heater (18), (36) to traverse the build platform (12) to selectively eject a print agent onto the build material.