Abstract: Methods for calibrating an irradiation device for an apparatus for additively manufacturing three-dimensional objects include generating at least two first and two second calibration patterns, in at least two different first positions and at least two different second positions; determining position information relating to the positions of the calibration patterns; generating a calibration quality value relating to a calibration status of the irradiation device; simulating at least two first calibration patterns and at least two second calibration patterns based on at least one changed irradiation parameter; determining a calibration quality value for the simulated calibration patterns; and repeating the simulation and determination of the calibration quality value until a maximum or minimum calibration quality value is reached.

Abstract: A system for fabricating a three-dimensional article includes a fluid supply with binding agent, a printhead, a powder dispenser, and a controller. The fluid supply is for containing a binding agent. The controller is configured to (a) operate the fluid supply and/or the printhead to elevate a temperature of the binding agent to above 25 degrees Celsius, (b) operate the dispenser to dispose a layer of the powder at a build plane, (c) scan and operate the printhead to selectively jet the binding agent onto the layer of powder to bind a layer of the three-dimensional article, and (d) repeat operating the dispenser and scanning and operating the printhead to complete fabrication of the article. Jetting or not jetting the binding agent includes individually operating drop ejectors of the printhead using a voltage waveform. The waveform can include one or more of a non-ejecting pulse and an ejecting pulse.

Abstract: An apparatus for additively manufacturing three-dimensional objects may include a first detection device configured to detect a first process parameter during operation of the apparatus, and to generate a first data set comprising information relating to the first process parameter, a second detection device configured to detect a second process parameter during operation of the apparatus, and to generate a second data set comprising information relating to the second process parameter; and a data processing device configured to determine a mutual dependency between the first process parameter and the second process parameter based at least in part on the first data set and the second data set. The mutual dependency may include a possible influence or a real influence of the first process parameter on the second process parameter. The first process parameter may include a chemical parameter and/or a physical parameter of an atmosphere within a process chamber of the apparatus.

Abstract: A pair of mating sealing jaws for forming a seal between opposing heatsealable surfaces includes a first jaw and a complementary second jaw. Each jaw has a sealing surface that includes at least two peaks separated by a valley. Each peak includes a first face and a second face. A phantom line bisecting the valley defines a first angle between the phantom line and the first face and defines a second angle between the phantom line and the second face such that the first angle differs from the second angle.

Abstract: Method and system for dispensing molten wax into molds by means of a desktop apparatus is disclosed. The invention being comprised of a heating chamber, temperature controller, metering dispenser, adjustable base, lighting strip and protective viewing cabinet. Said invention allowing wax to be melted and maintained at a temperature below the melting point of mold materials such as; but not limited to, filaments commonly used in 3D printing and the like. An object of the invention is to allow users to quickly position and fill custom molds for fabrication processes such as candle and jewelry making.

Abstract: A process for forming a flexible composite driveshaft includes providing a mandrel having a rigid region and a compressible region, applying fiber tape to the mandrel using automated fiber placement with in-situ laser curing in the rigid region and without in-situ laser curing the compressible region, and compressing the fiber tape and compressible material in the compressible region to form diaphragms that extend radially outward to a diameter that is at least twice the size of a diameter of the composite driveshaft in the rigid region.

Abstract: A composite structure is fabricated by laying up at least one ply of fiber reinforcement and at least one layer of resin on a tool. The resin film layer is formed by laying strips of resin film. The fiber reinforcement is infused with resin from the resin layer.

Abstract: Forming systems and methods for drape forming a composite charge are disclosed herein. The forming systems include a forming die having a forming surface and a collapsible support having a support surface. The collapsible support is configured to transition from an extended conformation to a collapsed conformation and is configured such that a gap width of a gap between the support surface and the forming surface decreases during the transition. The methods include positioning a composite charge, transitioning the collapsible support from an extended conformation to a collapsed conformation, decreasing the gap width of the gap as the collapsible support transitions from the extended conformation to the collapsed conformation, and deforming the composite charge from an initial conformation to a final conformation.

Abstract: A method and apparatus for constructing a tubular assembly 40 comprising an inner portion (24) and a further portion (23) surrounding the inner portion. The inner portion (24) comprises reinforcement (37) and the further portion (23) being formed from a strip (50) of material comprising two opposed longitudinal marginal side portions (53). The apparatus comprises an assembly station (220) comprising a wall (253). The apparatus comprises means for advancing the inner portion (21) along a first path (231) extending passed the wall (253), and means for advancing the strip (50) along a second path (232) and causing the strip to encircle the wall (253) and thereby wrap about and surround the inner portion (21). The apparatus further comprises means (321) for introducing resinous binder into the reinforcement (37) as the strip (50) is being wrapped about the inner portion (21).

Abstract: A composite manufacturing apparatus includes a width determining mechanism and a gas supplier. The width determining mechanism has a body and a gas passage. The body has a path configured to allow a tape material including fibers impregnated with a resin to pass therethrough. The path has a bottom surface and a pair of wall surfaces. The pair of the wall surfaces form a gap that gradually decreases. The gas passage is provided inside the body and formed by the bottom surface having a plurality of through holes, and is in communication with the plurality of through holes. The gas supplier is configured to supply gas to the gas pass age.

Abstract: A method of manufacturing a wind turbine blade shell part is described. Fibre mats and a root end insert are laid up in a mould part in a layup procedure by use of an automated layup system. The fibre mats are laid up by use of a buffer so that the fibre mats may continuously be laid up on the mould surface, also during a cutting procedure. The root end insert is prepared in advance and mounted on a mounting plate. The root end insert is lowered onto the mould by use of the mounting plate and a lowering mechanism. After the wind turbine blade shell has been moulded, the mounting plate is removed.

Abstract: Aspects of the present disclosure are directed to a doped composite rework material including a fiber-containing material, a resin-containing material, and a dopant, with the dopant configured to impart an identifying characteristic to the doped composite rework material; and methods for precluding rework of a previously reworked composite material.

Abstract: In general, the disclosure relates to methods and compositions for preparing colorants useful for preparing pigmented hydrogels. The disclosure further relates to pigmented hydrogels comprising the disclosed colorants. In some instances, the colorant is an alcohol extract of an agro-material, such as turmeric, paprika, spinach, and/or woad or the colorants comprise one or more of: a carotenoid, chlorophyll-a, chlorophyll-b, a curcumoid, or indigorubin. Alternatively, the colorant can be carbon black. The disclosure further relates to contact lenses comprising the disclosed pigmented hydrogels.

Abstract: A tire vulcanizing mold comprises a sidewall ring for molding a sidewall portion of a tire. The sidewall ring is composed of a main body provided with a circumferentially extending groove, and mold pieces mounted in the groove so as to be adjacent to each other in the circumferential direction. Between the mold pieces and/or between the main body and the mold pieces, there are formed micro-gaps for discharging gas existing in the tire vulcanizing mold so as to communicate with exhaust flow paths extending from the groove toward the outside of the mold.

Abstract: A venting device and a tire mold are disclosed for use in a tire vulcanization process. The venting device includes a core shaft and a sleeve sleeved over the core shaft, a venting passage is formed between the sleeve and the core shaft, the core shaft includes a shaft body, one end of the shaft body is connected to a shaft head, the other end of the shaft body is connected to a shaft end piece provided with a groove extending through the shaft end piece, and an end of the groove facing away from the shaft head is closed. The shaft end piece is used for axially stopping the shaft body, and the shaft end piece is further used for assembling the sleeve and the core shaft by contracting and springing back.

Abstract: A dunnage conversion machine for converting an expandable pre-slit sheet stock material into a relatively less dense dunnage product includes an improved expansion assembly that provides means for adjusting the spacing between axes of rotation of components through which the sheet stock material is drawn. The adjustability enables pre-slit sheet stock materials of differing thicknesses and/or having differing slit patterns to be fed through the expansion assembly with no or minimal compression of an expanded dunnage product, jamming in the conversion machine, bunching, and/or tearing of the pre-slit sheet stock material or expanded dunnage product resulting from expansion of the pre-slit sheet stock material.

Abstract: An apparatus is provided for producing longitudinally corrugated product. The apparatus includes a guide roll for guiding a web of medium material, wherein at least a portion of the guide roll is adapted to be arranged at an angle relative to another portion of the guide roll. The apparatus further includes a plurality of flute forming bars oriented generally along a longitudinal axis of the web to define a first corrugating labyrinth effective to longitudinally corrugate the web to an intermediate geometry. The apparatus further includes a pair of corrugating rollers that cooperate to define, at a nip therebetween, a second corrugating labyrinth effective to longitudinally corrugate the web to a substantially final geometry. The apparatus further includes a web travel pathway for the web that follows a path around a portion of the guide roll, through the first corrugating labyrinth, and through the second corrugating labyrinth.

Abstract: The hot plate (11) includes an upper plate (61) joined to a lower plate (63) along respective sides parallel to each other. A heat transfer fluid circulation chamber (65) is defined between the upper plate (61) and the lower plate (63), with at least a first inlet (83) of the heat transfer fluid and at least a first outlet (87) of the heat transfer fluid. The lower plate (63) has two downwardly bent edges (63.2), extending along the sides of the upper plate joined to the lower plate. Stiffening ribs (79) are joined to the lower plate (63), along the heat transfer fluid circulation chamber, and to the downwardly folded edges (63.2s) of the lower plate (63).

Abstract: The present invention relates to the use of an aromatic polycarbonate prepared by the transesterification of a bisphenol and a diaryl carbonate and having a viscosity average molecular weight, Mv, of from 22000 to 32000 g/mol, a polydispersity, defined as Mw/Mn, of from 1.8-3.2, a melt-flow index of from 3.0-10 g/10 min as determined in accordance with ASTM D 1238 (1.2 kg, 300° C.), an amount of Fries branching of from 750 to 2500 ppm, for the manufacture of bottles having a volume of at least 15 liter by means of an injection blow moulding or an extrusion blow moulding process.

Abstract: A composite panel assembly and method of forming the same includes a core, an inner skin coupled to a first side of the core, and an outer skin coupled to a second side of the core. A peripheral edge including portions of the core, the inner skin, and the outer skin, is compressed to close a path into the core.

Abstract: Provided is a functional laminate including a porous intermediate layer having air permeability laminated between a porous surface layer and a resin foamed layer, the porous intermediate layer having an average void ratio smaller than that of the porous surface layer.

Abstract: A low-weight carpet tile and process for making the same, wherein the carpet tile comprises a facecloth having a plurality of face yarns tufted through a primary backing, an extruded polymer secondary backing layer, and a reinforcing scrim layer partially embedded within the extruded polymer secondary backing layer. The top surface and bottom surface of the carpet tile are defined by the facecloth and the reinforcing scrim layer, respectively. A polymer-based resin is extruded onto the facecloth to form an at least substantially uniform secondary backing layer, and the reinforcing scrim layer is laid onto the extruded polymer secondary backing layer while the extruded polymer secondary backing layer remains above a softening temperature for the resin. The entire multi-layer web is then passed through a nip to embed the reinforcing scrim layer into the extruded polymer secondary layer, and the entire web is chilled.

Abstract: In a first aspect, a multilayer polymer film includes a first transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide and a second transparent, colorless polymer layer comprising a polyimide, a polyamide imide, or a block copolymer of a polyimide. An elastic modulus of the first transparent, colorless polymer layer is different than an elastic modulus of the second transparent, colorless polymer layer. The first and second transparent, colorless polymer layers are bonded by consolidation. In a second aspect, a cover window for a display includes the multilayer polymer film of the first aspect. The first transparent, colorless layer of the multilayer polymer film is the layer farthest from the display.

Abstract: A panel suitable for forming a floor covering by assembling a plurality of said panels adjacent to each other, which is of a substantially planar design, having a planar top side and a planar bottom side, said panel being composed from a layered structure that comprises: a waterproof core layer; a top layer adhered on the top side of said core layer, wherein the top layer comprises at least one ply of cured resin impregnated paper; an adhesive layer between the core layer and the top layer; characterized in that the adhesive layer is a cured mixture which comprises a polymeric adhesive compound, and an additional constituent which is either at least one resin component which is also present in the cured resin impregnated paper, and which is not included in the polymeric adhesive compound, or an epoxy resin.

Abstract: The present disclosure relates to a method for providing a film. The method may include providing a base layer, wherein the base layer is resistant to one or more of water or oxygen; coextruding a tie layer and a contact layer to provide a coextrusion layer; coating the coextrusion layer to the base layer; allowing the coextrusion layer coated to the base layer to adhere to form the film, wherein the film comprises the tie layer and the contact layer formed as a coextrusion layer coated to the base layer; wherein the tie layer comprises one or more layers, and wherein the tie layer, or the one or more layers of the tie layer, has a loading in the range of 7 to 20 g/m2; wherein the contact layer comprises a cycloolefin copolymer (COC).

Abstract: The present disclosure provides a biodegradable and compostable multilayer film. The biodegradable and compostable multilayer film comprises a sealant product side layer comprising at least one slip additive and having a pre-determined co-efficient of friction, an outer surface layer, and at least one intermediate layer disposed between the sealant product 5 side layer and the outer surface layer. The biodegradable and compostable multilayer film of the present disclosure has good mechanical properties and is non-reactive with tobacco based products, medicines, and food products to be packaged.

Abstract: The present invention relates to a sandwich panel and a method of manufacturing the same. The sandwich panel according to the present invention has high density and improved physical properties such as flexural strength, flexural modulus, bending strength and lightening weighting ratio and is suitable for use in various consumer products or industrial materials.

Abstract: There is provided a flexible substrate having excellent flexibility and gas barrier properties. A flexible substrate 100 according to the present invention includes: a base material 20 including an inorganic glass 10 and resin layers 11 and 11? placed on both sides of the inorganic glass 10; and an inorganic thin film 12 placed on a side of one of the resin layers where the inorganic glass is not placed, wherein the inorganic thin film 12 is formed on at least a peripheral edge of one surface of the base material.

Abstract: Laminated glass contains two glass sheets interlayered with at least one polymer film C which is provided with a coating A comprising a polyvinyl acetal PA and optionally at least one plasticiser WA, and at least one film B containing a polyvinyl acetal PB and at least one plasticiser WB wherein coating A comprises less than 16% by weight of plasticiser, film B comprises at least 16% by weight of plasticiser, and film C comprises polyamide, polyethylene terephthalate, polybutylene terephthalate, polyvinyl alcohol, polylactic acid, polyethylen furanoate cellulose acetate, polymethyl methacrylates, polyethylene naphthalate, ionomers, or combinations thereof, wherein film C is located between coating A and film B.

Abstract: A decorated laminate including: an outer ply; an inner ply; a polymer interlayer between the inner ply and the outer ply; and organic ink printed decoration on one or both of internal surfaces of the laminate between the outer ply and the polymer interlayer or between the inner ply and polymer interlayer, wherein the decorated laminate has a stone impact resistance as defined herein. Also disclosed is a method of making and using the decorated laminate.

Abstract: Provided is a strand board with improved strength and water resistance. Reduction in productivity is prevented and characteristics of the strand board can be varied as desired while achieving certain strength and water resistance of the strand board. A strand board B is formed by stacking and laminating five strand layers 1 each formed by a large number of strands 5. The strand board B has substantially constant density distribution in the lamination direction of the strand layers 1. Three of the five strand layers 1 of the strand board B are high-density strand layers 1a having a higher density than the other strand layers 1, and the other strand layers 1 are low-density strand layers 1b.

Abstract: The present invention relates to multilayer films used to protect a surface, in particular, to such films used to protect surfaces of articles e.g., mobile electronics display protections, smartphones, tablets), industrial touch screens (e.g. machine interfaces), UV stable surfaces and glass protections for machine housings and cockpits (e.g. caterpillars, dumpers), etc.), and, more particularly, to such a multilayer protective film backed by a silicone-based pressure sensitive adhesive (PSA) and having either an aliphatic polyurethane layer or an aliphatic thermoplastic polyurethane layer on top of an aliphatic thermoplastic polyurethane layer, where the two aliphatic polyurethane layers have different physical and/or chemical properties. The present invention also relates to an article that is protected by the multilayer film as well as a method for making the multilayer protective film.

Abstract: A multilayer film comprises (a) two or more non-plasticized layers comprising lactic acid polymer and (b) one or more plasticized layers comprising lactic acid polymer and plasticizer sandwiched between the two or more lactic acid polymer layers; wherein the thickness of the one or more plasticized layers comprises from about 60% to about 70% of the total thickness of the multilayer film.

Abstract: The present invention provides multilayer films, packages formed from such films, and methods of making multilayer films. In one aspect, a multilayer film comprises multilayer film comprising at least 3 layers, each layer having opposing facial surfaces and arranged in the order A/B/C, wherein a top facial surface of Layer B is in adhering contact with a bottom facial surface of Layer A; wherein a top facial surface of Layer C is in adhering contact with a bottom facial surface of Layer B, wherein the film is oriented in the machine direction and wherein the film exhibits a normalized carbon dioxide transmission rate of at least 3000 cm3·mil/100 in2/day, and wherein the film exhibits a ratio of the carbon dioxide transmission rate to an oxygen transmission rate of at least 4.0.

Abstract: The objective of the present invention is to provide a packaging bag which is produced from a laminate, which is excellent in straight cut property and which hardly cause a parting, even if the laminate contains a biaxially stretched PBT film having a large distortedness of a molecular orientation axis. The laminate has a biaxially stretched film substrate consisting of a polyester resin composition and a sealant film consisting of a polyolefin resin composition, and has a straight cut property in a longitudinal direction of 5 mm or less. The polyester resin composition contains 60 wt % or more of a polybutylene telephthalate resin, and the polyolefin resin composition contains 40 wt % to 97 wt % of a propylene-ethylene block copolymer, 3 wt % to 10 wt % of an ethylene-propylene copolymer elastomer, and 0 wt % to 50 wt % of an ethylene-?olefin random copolymer.

Abstract: A resin composition resulting in a cured article which is excellent in balance among mechanical strength, surface smoothness, and light transmittance, a method for producing a cured article, a cured article, and a flexible substrate or flexible display including the cured article. The resin composition includes a polyamic acid having a structural unit represented by the following formula (1), a cellulose compound having a weight average molecular weight of 60,000 or less, and an organic solvent. In the formula (1), A is a tetravalent organic group and B is a divalent organic group.

Abstract: A polyamide acid of the present invention contains, as a diamine component, 2,2-bistrifluoromethylbenzidine and trans-1,4-cyclohexanediamine, and contains, as a tetracarboxylic acid dianhydride component, a pyromellitic acid anhydride and a 3,3,4,4-biphenyltetracarboxylic acid dianhydride. A ratio of the trans-1,4-cyclohexanediamine to a total amount of the diamine is preferably 0.5-40 mol %. A polyimide is obtained by dehydration ring closure of the polyamide acid.

Abstract: A sheet containing a carbon fiber and a fluororesin layer disposed around a carbon monofilament constituting the carbon fiber. A fluororesin constituting the fluororesin layer is polyvinylidene fluoride. Further, the sheet has a tensile strength of 400 MPa or higher. Also disclosed is a laminate including a first layer and a second layer that is disposed on the first layer and that includes the sheet; a pipe including the laminate; a riser tube including the pipe and a flowline including the pipe.

Abstract: A multilayer film can comprise: a plurality of layers, preferably 4 layers to 128 layers, comprising: a polymer A layer comprising a polycarbonate copolymer and a polymer B layer comprising a semi-crystalline polyester; wherein a differential solubility parameter (??AB) of polymer A towards polymer B (??AB) is greater than or equal to 2.6 MPa1/2; and an interdiffusion region between each polymer A and polymer B. The multilayer film has a dynamic flexure of greater than or equal to 200,000 cycles, as determine by bending 180° on a 10 mm radius cylinder at a rate of 1 hertz. The multilayer film has a total thickness of 40 ?m to 70 ?m, a transmission at 360 nm to 750 nm of greater than or equal to 89% and a haze of less than or equal to 1%.

Abstract: The present document describes an apparatus for reducing fabric dimpling in electronic devices and associated methods. The apparatus is used during assembly to prevent fabric, which is stretched over a perforated part (e.g., speaker housing), from dimpling into the holes (e.g., perforations) of the perforated part. The apparatus includes protrusions (e.g., pins), which act as a negative of the holes in the perforated part, to support the fabric as it is stretched over the perforated part. In particular, the protrusions are inserted through the perforations via an interior surface of the perforated part such that the protrusions are “proud” (slightly projecting from a surface) with respect to an exterior surface of the perforated part. The proudness of the protrusions may vary based on a degree of curvature of the perforated part at a location corresponding to a respective protrusion.

Abstract: A scrap collection assembly for a tape lamination head that applies a plurality of composite tape segments includes a crack-off assembly with a scrap crack-off redirect roller configured to engage one or more composite tape segments and one or more scrap portions; a secondary crack-off roller configured to engage one or more composite tape segments and one or more scrap portions; a pivot that connects the crack-off assembly to the tape lamination head, wherein the secondary crack-off roller selectively moves about the pivot to change a direction of composite tape movement; and a conveyor that receives the scrap portion(s) from the secondary crack-off roller.

Abstract: A method, apparatus, and system for reticulating an adhesive on a workpiece. The workpiece may be perforated with a plurality of passages that extend through a first side to a second side. To reticulate an adhesive on the first side of a workpiece, a flow of heated fluid is provided through a nozzle. The nozzle provides the fluid at a first pressure to a first group of the perforations. Once the temperature at the first side of the workpiece reaches a specified range, the fluid pressure may be increased or otherwise set in order to clear the perforations by forcing the adhesive out of or away from each of the perforations. Temperature of the adhesive, pressure within the nozzle, and/or light passage through the perforations may be monitored for logical control or quality assurance.

Abstract: Disclosed herein are embodiments of methods that utilize dry adhesion tuning of a composite structure to adhere substrates. In some embodiments, the disclosed methods utilize dry adhesion between a composite structure and a substrate and further dynamically control the resulting dry adhesion strength through a heating step, which facilitates rigidity tuning of a core component of the composite structure and/or facilitates thermal control of the interface between the substrate and the composite structure. Also disclosed herein are array devices and other products comprising the disclosed composite structures.

Abstract: In order to provide a laminating apparatus that enables a film to be loaded in a reliable and easy manner without a complicated structure, a laminating apparatus 1 includes a sheet feed mechanism unit 10, a film cassette 20, and a press-bonding mechanism unit 30 configured to perform thermal press-bonding while sandwiching a sheet with a pair of films. The laminating apparatus 1 also includes an openable/closable upper unit 5, and employs a configuration in which the upper unit 5 is provided with one pressing roller 31 of a pair of pressing rollers of the press-bonding mechanism unit 30, and an upper member of another mechanism for performing a process in a state where the sheet is sandwiched between the films.

Abstract: The invention relates to an applicator for die-cut parts (2), having a die-cut part strip (1) with a longitudinal direction (L) having a carrier layer (3) and an adhesive layer (4), where an outer contour of the die-cut parts (2) is punched through the carrier layer and adhesive layer (3, 4) down to predetertnined breaking points (18) and a die-cut part complement (19) protrudes beyond the die-cut parts (2) continuously laterally to a longitudinal direction (L), and a punch head (8) over which the die-cut part strip (1) runs, where the die-cut parts (2) running over the punch head (8) face away from the punch head (8) by their adhesive layer (4), and the die-cut parts (2) can be pressed by means of the punch head (8) onto a surface (11).

Abstract: A method of manufacturing a packaging sheet, the method being capable of not only greatly improving a heat insulation property of the packaging sheet, but also minimizing the volume of cells of the packaging sheet without opening the cells by cutting or needle-punching the cells, thereby facilitating storage and transportation of the packaging sheets while significantly reducing logistics costs.

Abstract: A method of processing a substrate, with a first major surface of the substrate removably bonded to a first major surface of a first carrier and a second major surface of the substrate removably bonded to a first major surface of a second carrier, includes initiating debonding at a first location of an outer peripheral bonded interface between the substrate and the first carrier to separate a portion of the first carrier from the substrate. The method further includes propagating a first debond front from the first debonded location along a first direction extending away from the first debonded location by sequentially applying a plurality of lifting forces to the first carrier at a corresponding plurality of sequential lifting locations of the first carrier.

Abstract: Apparatuses and methods for decoupling an element that is bonded to a surface by an adhesive are provided. In one example, the apparatus includes a body, a first spool that is rotationally coupled to the body, and a cable having a first cable end portion that is coupled to the first spool, a second cable end portion that is coupled to the body, and a cable intermediate portion that is disposed between the first cable end portion and the second cable end portion. The apparatus is configured to be positioned adjacent to at least one of the element and the surface with the cable intermediate portion disposed adjacent to the adhesive such that when the first spool is rotated, the cable wraps about the first spool, thereby pulling the cable intermediate portion through the adhesive.

Abstract: A screw having a longitudinal body and, around this longitudinal body, at least one flight extending in the shape of a helix, the flight including, over part of its length, internal partitioning delimiting a plurality of internal channels that extend in the shape of helices following the helix shape of the flight. The screw includes manifold-like cavities into which the ends of the interior canals open, the manifold-like cavities extending radially and opened into a longitudinal bore of the body at longitudinally spaced locations. This screw can be produced by additive manufacturing using laser-induced fusion.

Abstract: An additive manufacturing system can include a powder dispenser; a gate adjacent to the powder dispenser; a recoater blade system; and a control operable to move the gate with respect to the powder dispenser to selectively dispense powder from the powder dispenser.