Abstract: Systems and methods can be used to produce fibers with external corrugations, internal corrugations, or both. These fibers can be used, for example, in hollow fiber membrane modules.

Abstract: A powder processing machine includes a work bed, a powder deposition device operable to deposit powder in the work bed, at least one energy beam device operable to emit an energy beam with a variable beam power and direct the energy beam onto the work bed with a variable beam scan rate to melt and fuse regions of the powder, and a controller operable to dynamically control at least one of the beam power or the beam scan rate to change how the powder melts and fuses. The controller is configured to determine whether an instant set of process parameters falls within a defect condition or a non-defect condition and adjust at least one of the beam power or the beam scan rate responsive to the defect condition such that the instant set of process parameters falls within the non-defect condition.

Abstract: Methods of embedding a heating circuit in an article fabricated by additive manufacturing. The methods describe techniques such as co-extruding a wire, capable of being heated, along with print material in additive manufacturing of the article, and placing a pre-shaped wire capable of being heated between adjacent layers of the article. A third method includes dispensing a wire, capable of being heated, during the additive manufacturing of the article, and compacting the wire into the printed material. An apparatus for embedding a heating circuit in an article fabricated by additive manufacturing. The apparatus contains a wire dispenser, a cutter to control the length of the wire dispensed, and a compactor capable of embedding the wire capable of being heated into the printed material. An article made by additive manufacturing is disclosed. The article contains at least one heating element embedded in the article during the additive manufacturing process.

Abstract: The present invention is related to a method and an apparatus for curing a polymeric form. The method includes arranging an uncured polymeric form within a curing chamber (60) formed by a base member (20) and a constraining member (40). A thermal expansion member (30) is additionally positioned within the curing chamber (60) with the uncured polymeric form (70) such that the thermal expansion member and the uncured polymeric form are positioned between the base member (20) and the constraining member (40). The thermal expansion member (30) is heated to expand in size into an expanded state. In the expanded state the thermal expansion member (30) applies pressure to the uncured polymeric form (70) within the curing chamber. The expansion of the thermal expansion member (30) is maintained to maintain the application of pressure to the uncured polymeric form while the uncured polymeric form is being cured to form a cured polymeric form.

Abstract: The exemplary embodiments describe techniques for a controlled chemical vapor deposition growth and transfer of arrayed TMD monolayers on predetermined locations, which enable the formation of single crystalline TMD monolayer arrays on specific locations. The unique growth process includes the patterning of transition metal oxide (e.g., MoO3) on the source substrate contacting the growth substrate face-to-face, where the growth of single crystalline TMD monolayers with controlled size and location, exclusively on predetermined locations on the growth substrates is accomplished. These TMD arrays can be align-transferred using a unique process that combines the wet and stamping transfer processes onto any target substrate with a pin-point accuracy, which dramatically enhances the integrity of transferred TMDs.

Abstract: A sacrificial substrate for use in stereolithography, having a first surface configured to be attached to a build platform, and a second surface of the sacrificial substrate configured to be attached to a photopolymer part. The sacrificial substrate physically separates the build platform and the photopolymer part, and serves as the deposition surface for the photopolymer part in place of the build platform. The sacrificial substrate may be separated from the build platform and then separated from the photopolymer part via pyrolysis, oxidation, or etching to thereby yield the free photopolymer part without subjecting the part to excess physical force or damage.

Abstract: The present invention relates to a process for the production of a stretch film comprising a) providing a film web comprising a center portion comprising linear low density polyethylene (LLDPE) and edge portions comprising low density polyethylene (LDPE) using an encapsulation die, b) solidifying the film web to obtain a solidified film web comprising a solidified center portion comprising LLDPE and solidified edge portions comprising LDPE and c) removing the solidified edge portions from the solidified film web to obtain the stretch film.

Abstract: The invention relates to a production mold for a rotor blade of a wind turbine plant, having two mold half-shells (3, 4) which during a production method of the rotor blade are disposed so as to be at least temporarily beside one another, and having at least one inner walkway (2c, 2d) that runs along so as to be between the two mold half-shells (3, 4), characterized by at least one escape path (40) which runs along below at least one of the two mold half-shells (3, 4).

Abstract: An additive manufacturing apparatus includes a dispensing system positionable over a platen to deliver a powder, an actuator to move the dispensing system along a scan axis, and an energy source to fuse a portion of the powder. The dispensing system has a hopper to hold the powder and a dispenser. The dispenser includes a channel extending along a longitudinal axis from a proximal end to a distal end. The proximal end of the channel of the dispenser is configured to receive the powder from the powder source. A powder conveyor is positioned within the channel to move the powder from the proximal end along a length of the channel, and a plurality of apertures are arranged along the longitudinal axis of the channel. The dispenser is configured such that flow of powder through each aperture is independently controllable.

Abstract: The present invention relates to an adhesive producible from an aqueous polyurethaneurea dispersion comprising an amorphous polyurethaneurea (V1) obtainable by reacting at least A) one aliphatic, cycloaliphatic or araliphatic polyisocyanate component having an average isocyanate functionality of ?1.8 and ?2.

Abstract: The invention relates to a method and a device for applying fluids, particularly in a method for producing three-dimensional shaped parts, wherein a coating device comprising a blade, a fluid outlet and a reservoir is provided, and the blade is displaced across the working field such that it can implement a rotational movement type vibration, said vibration occurring as the result of a stroke by a linear actuator.

Abstract: A duplex liner for a shipping label. A method for making a liner for a shipping label comprises providing a first ply. The first is a clear plastic sheet. The method includes providing a second ply. The second ply comprises printable paper. The method comprises applying a copolymerized emulsion on an underside of the first ply, and using press rollers to press the first ply against the second ply to cause the copolymerized emulsion to fuse the first ply and the second ply.

Abstract: In example implementations, an apparatus includes a housing, a movable base, a tab portion and a coupling mechanism. The housing is comprised of a microwave transparent material. The movable base is coupled to the housing to receive build material that is digitally printed. The tab portion is coupled to a bottom portion of at least one wall of the housing. The tab portion stops the movable base. The coupling mechanism is coupled to the housing to removably attach the apparatus to a three dimensional printer.

Abstract: A printing device is provided and includes: a table attaching portion, replaceably attaching a respective table of a first table for mounting a three-dimensional object and a second table including a mounting surface for mounting a medium and a plurality of pass-through holes passing through the mounting surface and a back surface on an opposite side of the mounting surface; an ejecting unit, ejecting a shaping material for shaping the three-dimensional object and a coloring material for coloring the three-dimensional object and the medium toward the table attached to the table attaching portion; a relative moving portion, relatively moving the table attaching portion and the ejecting unit in a vertical direction and a horizontal direction; and a suction portion, decompressing a side of the back surface of the second table when the second table is attached to the table attaching portion to adsorb the medium to the mounting surface.

Abstract: A molding apparatus includes a mold comprising a stationary outer mold with a substantially tubular mold cavity, a moveable end mold with an end mold cavity alignable with the tubular mold cavity, and a stationary elongated mold core with a fluid channel therethrough, the mold core extending through the tubular cavity into the end mold cavity. A method of using the apparatus includes injecting a molding material at a material flow rate into the mold, moving the end mold at a speed in a linear direction from a first position to a second position, supplying a fluid at a fluid flow rate to the fluid channel, and varying at least one of the material flow rate, the end mold speed and the fluid flow rate as the end mold moves from the first position to the second position.

Abstract: The present invention relates to method to make a spray skin from an aqueous polyolefin dispersion composition comprising a an olefin block copolymer, a dispersing agent, preferably an ethylene acrylic acid, and water, wherein said aqueous dispersion preferably has a pH less than 12 and is derived from the melt blending. The method comprises the steps of spraying the aqueous polyolefin dispersion onto a heated mold forming the skin and then allowing it to dry.

Abstract: A transparent resin molded product and a mold for molding the product are provided in which occurrence of silver streak in the resin molded product is prevented. The resin molded product includes a design portion and a non-design portion, at least a part of the design portion is molded by transparent resin, and a gate trace (a gate arrangement position during the resin molding) is disposed in the non-design portion (runner portion). A foreign matter restraining portion for restraining foreign matters and bubbles contained in the transparent resin is disposed in the vicinity of the gate trace of the non-design portion. The foreign matters and bubbles are restrained by the foreign matter restraining portion and are prevented from flowing to the design portion, and therefore the occurrence of silver streak on the design portion can be prevented.

Abstract: A method of injection moulding an article, the method comprising the steps of: (a) providing an injection mould comprising a plurality of mould parts defining a mould cavity of the injection mould, the plurality of mould parts including first and second movable mould parts, the injection mould further comprising an injection inlet for injecting molten thermoplastic resin material into the mould cavity, wherein the injection inlet is located in the vicinity of the first movable mould part and the second movable mould part is remote from the injection inlet; (b) disposing the first and second movable mould parts in a first configuration so as to define a first intermediate moulding cavity, in which first configuration the first movable mould part is in a first rearward position and the second movable mould part is in a first forward position; (c) injecting molten thermoplastic resin material into the first intermediate moulding cavity through the injection inlet to fill the first intermediate moulding cavity wi

Abstract: A three-dimensional (3-D) printer includes build and support material development stations positioned to transfer layers of build and support materials to an intermediate transfer surface. The intermediate transfer surface transfers a layer of the build and support materials to a platen each time the platen contacts the intermediate transfer surface. A sensor detects the thickness of the layer on the platen, and a mechanical planer is positioned to contact and level the layer on the platen as the platen moves past the mechanical planer. Additionally, a feedback loop is electrically connected to the sensor and the mechanical planer. The mechanical planer adjusts the amount of the build material and the support material removed from the layer based on the thickness of the layer on the platen, as determined by the sensor.

Abstract: A machine base for an injection molding machine is equipped with an upper frame supporting at least a mold clamping device of the injection molding machine from below, two lower frames supporting the upper frame from below in a state of being in contact with a bottom surface of the upper frame, and a plurality of height adjusting mounts respectively attached to bottom surfaces of the two lower frames and configured to adjust the height of the injection molding machine.