Abstract: A system and method are presented in which a flow of plastic is extruded to obtain nano-sized features by forming multiple laminated flow streams, flowing in parallel through the non-rotating extrusion system. Each of the parallel laminated flow streams are subjected to repeated steps in which the flows are compressed, divided, and overlapped to amplify the number of laminations. The parallel amplified laminated flows are rejoined to form a combined laminated output with nano-sized features. The die exit is formed to provide a tubular shape.

Abstract: Provided are an ethylene polymer mixture, a method of preparing the same, and a molded article using the same. More specifically, an ethylene polymer mixture in which two ethylene polymers having different densities are mixed, a method of preparing the same, and a molded article having a low haze and a low heat sealing temperature using the ethylene polymer mixture, are provided.

Abstract: A manufacturing method of a rotor may be provided with: arranging a magnet and a thermoplastic in a magnet fixing portion of a rotor core including a laminate in which a plurality of metal plates is laminated, the magnet fixing portion including a hole and/or a trench provided in the rotor core and extending along a lamination direction of the laminate; heating the rotor core while rotating the rotor core around a center axis of the rotor core, with the center axis intersecting a vertical direction; and cooling the rotor core to fix the magnet to the rotor core via the thermoplastic while rotating the rotor core around the center axis, with the center axis intersecting the vertical direction.

Abstract: An expanding tool comprising: an actuator comprising a cylindrical housing that defines an actuator housing cavity; a primary ram disposed within the actuator housing cavity, the primary ram defining an internal primary ram cavity; a secondary ram disposed within the internal primary ram cavity; a cam roller carrier coupled to a distal end of the secondary ram; a drive collar positioned within a distal end of the actuator housing cavity; a roller clutch disposed within an internal cavity defined by an inner surface of the drive collar; a shuttle cam positioned between the roller clutch and a distal end of the primary ram; an expander cone coupled to the primary ram; and an expander head operably coupled to the drive collar. When triggered, the actuator first rotates the expander head and then the actuator expands the expander head.

Abstract: The invention relates to a pole (1) for the transmission of electric power and/or telecommunication signals. The material of the pole includes reinforced concrete with a reinforcement of non-magnetic material. The pole has a length in the range of 2 to 25 m and a maximum cross section dimension less than 0.5 m. According to the invention the pole (1) is hollow along at least a part of its length extension with a cavity (20) surrounded by a layer (9) of reinforced concrete. The pole (1) includes electric power transmission components (14-17) and/or telecommunication components (11-13) arranged in the cavity (20). The electric power transmission components (14-17) include at least one of the components: transformer, energy storage, control equipment and inverter/converter. The telecommunication components (11-13) include at least one of the components: ICT-equipment, transmitter, receiver and antenna. The invention also relates to the use of such poles and to a method related thereto.

Abstract: A method of vacuum forming an object includes heating a plastic sheet. After heating the plastic sheet, a vacuum is applied to pull the sheet against an outer surface of a flexible mold so that the plastic sheet has a formed shape that conforms to a contoured shape of the outer surface of the flexible mold. A rigid core is withdrawn from a cavity in the flexible mold. The flexible mold is then withdrawn from the plastic sheet by applying force to the flexible mold in a single direction, thereby causing flexing of the flexible mold past the undercut. An apparatus for vacuum forming a plastic sheet includes the flexible mold.

Abstract: Expansion head for expansion tools for hollow workpieces, particularly for the ends of plastic pipes and metal-plastic composite pipes, comprising a union cap with a radially inwardly oriented guide flange, and a set of sector-shaped expandable jaws, each of which is individually received in the union cap in a radially movable manner by an inner flange sector that overlaps with the guide flange, the set of sector-shaped expandable jaws being movable between a closed state and an expansion state, and an approximately cylindrical lateral surface being embodied in the closed state by the outer wall of the expandable jaws, wherein the outer wall has at least one recess and/or raised area extending in the direction of the longitudinal axis of the expandable jaws.

Abstract: The extruder head assembly comprises of a drive shaft connected to a troweling cylinder. A plurality of rollers are spaced around the drive shaft and above the troweling cylinder and intermittently contact an inside surface as the troweling cylinder is rotated and pulled upward. The rollers are either elliptically shaped or round positioned on an eccentric axis for intermittent contact against an inside surface of the concrete pipe. The rollers compact the concrete mixture to form the outer surface and the troweling cylinder follows the compaction by smoothing the surface. The troweling cylinder comprises a plurality of removable sections. Each section is composed of a plurality of removable and replaceable tile segments. When a tile segment breaks, the section containing the broken tile segment can be removed so that the broken tile segment can be replaced.

Abstract: A can of a drive motor is provided for a pump assembly, wherein the can (22) is manufactured at least partly of plastic (52). At least in a part of the can (22) the plastic (52) is reinforced by individual fibers (32) distributed in the plastic (52). The fibers (32) in at least one layer (35) of the can (32) are aligned in a defined manner in the peripheral direction with respect to the longitudinal axis (Z) of the can (22). A method for manufacturing such a can is also provided.

Abstract: A material layering device may include a first pinning roller and a second pinning roller. A distance between the first pinning roller and the second pinning roller is less than a diameter of a substrate. The device also includes a return system, wherein the return system comprises a plurality of rollers. The device also includes a belt, which may have a first loop portion disposed between and protruding beyond the first pinning roller and the second pinning roller. The first loop portion also wraps about an intended substrate along an arc greater than about 180 degrees. The device further includes a feed portion coupled to the first loop and extending outwardly from the second pinning roller opposite the first loop and providing a surface upon which a sheet can be placed. Furthermore, the device also includes an adjustment mechanism coupled to one of the rollers.

Abstract: A method for forming a tubular sheet product roll includes providing a sheet product roll having a first configuration and a void, centering a rotational axis of the sheet product roll on a longitudinal axis of a first tool, and inserting the first tool into the void of the sheet product roll to define an inner diameter of the void and to form the sheet product roll having a second configuration different from the first configuration.

Abstract: Provided are a polyimide tube that can be produced at a low cost and has good durability and a good offset property, a method for producing the polyimide tube, and a fixing belt which includes the polyimide tube as a base and which has good durability and a good offset property. Provided are a polyimide tube including a base resin containing a polyimide resin having good rigidity and a soft polyimide resin having good flexibility in a mass ratio of 30:70 to 70:30, 20% to 50% by volume of graphite, 3% by volume or more of a highly conductive carbon black particle, and 0.5% by volume or more of a carbon nanotube relative to the volume of the base resin, a method for producing the polyimide tube, and a fixing belt including the polyimide tube as a base.

Abstract: Method of manufacturing a large-scale shell construction, wherein a form is sprayed with a setting construction material, such as concrete. The method comprises rotating the form about a rotation axis while applying said construction material. Preferably it also comprises suspending the form from above in a point through which the rotation axis runs. Furthermore, the method can comprise floating the form on a body of water.

Abstract: Molding methods and molds for making a synthetic resin molded product include disposing a curable liquid resin mixture in a recess of a female mold. The curable liquid resin mixture is then simultaneously agitated and degassed by a mixer while under a partial vacuum. More specifically, at least the female mold is orbited around an orbital axis while being rotated about a rotational axis that is eccentric to the orbital axis. After being thoroughly mixed and degassed, the liquid mixture is then cured in the mold unit.

Abstract: A method and system for forming a product including a layer of fiber to a surface of a mold is provided. The system includes a mold and an apparatus. The mold is configured to rotate about an axis of rotation. An apparatus includes a base and a head coupled to the base. The base is configured to rotate about the axis of rotation. The head is configured to apply the fiber to the surface of the mold to form the product. The product includes at least one layer including at least one fiber applied using centrifugal force.

Abstract: The instant invention provides rotational molded articles, and method of making the same. The rotational molded articles according to the present invention comprise a polyethylene composition comprising: (a) at least 85 percent by weight of the units derived from ethylene; and (b) less than 15 percent by weight of units derived from one or more ?-olefin comonomers; wherein the polyethylene composition has a density in the range of 0.930 to 0.945 g/cm3, a molecular weight distribution (Mw/Mn) in the range of 1.70 to 3.50, a melt index (I2) in the range of 0.5 to 20 g/10 minutes, a molecular weight distribution (Mz/Mw) in the range of less than 2.5, vinyl unsaturation of less than 0.06 vinyls per one thousand carbon atoms present in the backbone of the polyethylene composition.

Abstract: A method of forming a simulated combustible fuel element including covering at least a part of a surface of a master with a material selected to produce a mold, and then removing the master from the mold. A predetermined amount of a liquefied body material that is less than a volume of the mold is introduced into the mold. A body including the body material is produced with one or more cavities therein and an exterior surface simulating at least the part of the surface of the master. The body material is allowed to solidify, at least to the extent that the body material is self-supporting, and the mold and the body are separated. One or more fuel light sources are positioned to direct light therefrom in the cavity. At least a portion of the exterior surface is coated so that the portion simulates a combustible fuel element.

Abstract: Devices and methods for making hollow concrete elements are disclosed. A device includes a drum mold having a tubular mold wall. The mold wall has a first and a second end flange each with an inner periphery smaller than the inner periphery of the mold wall at each respective end. The device further includes a compaction roller positionable inside the mold wall. The compaction roller has a profile that defines the interior shape of the concrete element. The compaction roller is supported by a hydraulically height adjustable supporting mechanism that is operable to independently adjust the distance of each end of the compaction roller with respect to the inner periphery of the mold wall.

Abstract: A pipe end is expanded by an expander tool (1) comprising a plurality of jaws (10), which are radially movable in relation to a center axis between a retracted position and expanded position. The jaws (10) when retracted are intended to be inserted into the pipe end. The jaws (10) have outer jaw surfaces which are intended for engagement with the inner surface of the pipe end and which lie adjacent to one another in the retracted position of the jaws (10). The tool (1) further comprises a piston (2) or a cone with a tapered end for moving the jaws (10) between said positions and means moving the piston (2) or the cone in a reciprocating manner in the axial direction for expanding the pipe end. The tool (1) further comprises support structures whereby the jaws (10) are supported in a circumferential direction in the expanded position. A method for expanding a pipe using such a tool is also disclosed.

Abstract: A nanocomposite material apparatus suitable for fabricating a nanocomposite material from different materials is provided. The nanocomposite material apparatus includes an acceleration inner tube and a collection outer tube. The acceleration inner tube disposed along a rotation axis has a top surface, a bottom surface and an outer peripheral surface. Pipes for accelerating different materials is distributed within the acceleration inner tube. Each pipe includes an inlet, an outlet opening at the outer peripheral surface and a spiral trench connecting the inlet and the outlet. Nano materials having electricity are emitted from the corresponding outlets by accelerating different materials within the corresponding pipes.

Abstract: A method for forming a tail fin of wind turbine includes first pouring a proper amount of molten plastic into a mold having a cavity showing a contour of the tail fin and the mold is rotated to induce a centrifugal force that makes the plastic uniformly sticking to an inside surface of the cavity to form a tail fin that shows an aerodynamic feature of a one-piece hollow shell. The tail fin, when mounted to the wind turbine, realizes efficient and stable control of rotor blades at a front end of the nacelle in alignment with windward direction so as to improve the use of wind power and make the tail fin and the rotor blades in a weight balanced condition to thereby reduce the load applied to a yaw bearing located under the nacelle and extend the service life of the bearing.

Abstract: Described herein is a method forming a belt suitable for use with an image forming system. The method includes coating a composition of a polyimide, a phosphate ester and a solvent onto an outer surface of a rotating metal belt, and subsequently curing and releasing the composition from the metal belt.

Abstract: A method for manufacturing a tubular body, includes: attaching a first member to an outer or inner peripheral surface of one end in an axial direction of a cylindrical core, along a circumferential direction of the peripheral surface thereof; applying a first resin solution on the peripheral surface, to cover it and the peripheral surface of one end of the first member closer to the center of the core, and to form a coating (first coat film); attaching a second member to the peripheral surface of the end of the first coat film on the side where the first member has been attached; applying a second resin solution on the peripheral surface of the first coat film, to cover it and the peripheral surface of the end of the second member closer to the center, and to form a coating (second coat film); peeling off the first and second members.

Abstract: A method of forming a simulated combustible fuel element for simulating a semi-burned combustible fuel element, including, first, covering a surface of the semi-burned combustible fuel element with a material selected to produce a resiliently flexible mold, and second, after the selected material has set, removing the semi-burned combustible fuel element from the mold. Next, a predetermined amount of liquefied body material is introduced into the mold, and a body is produced resembling the semi-burned combustible fuel element with one or more cavities therein and an exterior surface simulating the surface of the semi-burned combustible fuel element, the body including one or more light passages. After the body material is cured, the mold is removed from the body.

Abstract: The present invention relates to a process for the production of polyethylene hollow articles, which process comprises charging the polyethylene with one or more NO-acyl hindered amine additives containing one or more groups of formula (I), filling this mixture into a mold, heating this mold in an oven to above 280° C., such that the additized polyethylene melts, rotating the mold around at least 2 axes, the additized polyethylene spreading to the walls, cooling the mold while still rotating, opening it, and taking the resultant hollow article out, where the group of formula (I) is where Ra is a monoacyl or diacyl radical; R1-R4 are each C1-C6alkyl; and R5 and R6 are each, independently of one another, hydrogen, C1-C6alkyl or C6-C10aryl; or R5 and R6 are together oxygen.

Abstract: A rotatable turntable tool is used in trimming wheel-thrown pottery. The turntable tool includes a base portion, a bearing member, and a cap portion which is rotatably attached to the base portion. A method of trimming an unfired clay workpiece includes steps of inverting the workpiece and placing it at a central portion of a wheel head on a potter's wheel; placing the turntable tool on top of a central portion of the inverted workpiece; pressing downwardly on the cap portion of the turntable tool while rotating said wheel head to stabilize the workpiece, whereby the base portion of the turntable tool rotates with the workpiece, while the cap portion is substantially restrained from rotating; and applying a trimming tool to an edge of the workpiece to remove unwanted clay therefrom.

Abstract: A precast concrete meter pit consisting of a plurality of precast concrete hollow elongated cylindrical wall sections in end to end relation to one another is fabricated by utilizing a slip form packerhead apparatus in which the wall sections are formed with an annular slip ring when concrete is injected into the slip form apparatus.

Abstract: A method of manufacturing a cylindrical member having anti-slip projections formed on axial end faces, the method comprising the steps of: employing a roller die, which is provided with a circumferential die groove of annular form extending through a medial section in a generatrix direction of a die face defined by an integral tapered outside peripheral face, and with a plurality of sloping die grooves extending in a tapered slope direction of the die face situated to both large-diameter and small-diameter sides of the circumferential die groove; providing plastic working to the axial end face with the small-diameter side of the roller die facing towards an inner peripheral side of the cylindrical member and with the large-diameter side facing towards an outer peripheral side, by pushing the die face against the axial end face while rotating circumferentially; and forming simultaneously an annular water barrier projection and the anti-slip projections.

Abstract: The present invention discloses the use in rotomolding or slush molding applications of a composition comprising a polyolefin, a processing aid and optionally a UV-stabilizer.

Abstract: Hyper-branched biodegradable polymers are produced by melt processing biodegradable polymers with a branching agent at temperatures that promote free radical reactions between the biodegradable polymer and the branching agent. The biodegradable compositions have an excellent balance of mechanical properties and are suitable for flame retardant applications.

Abstract: A valve in a mold as to provide a potential airflow pathway either way, the valving having at least a substantially closed condition from which it can be opened by a pressure differential in one direction that is below that which will cause it to open or fail to allow an airflow in the other direction.

Abstract: Devices and methods for making hollow concrete elements are disclosed. A device includes a drum mold having a tubular mould wall. The mould wall has a first and a second end flange each with an inner periphery smaller than the inner periphery of the mould wall at each respective end. The device further includes a compaction roller positionable inside the mould wall. The compaction roller has a profile that defines the interior shape of the concrete element. The compaction roller is supported by a hydraulically height adjustable supporting mechanism that is operable to independently adjust the distance of each end of the compaction roller with respect to the inner periphery of the mould wall.

Abstract: A tampon applicator barrel including a cardboard tube having a first end and a second end and at least one gripping structure defined from the cardboard tube proximate the second end is provided. The cardboard tube has a wall thickness of between about 0.015 and about 0.020 inches, while the gripping structure has a height of up to about 0.035 inches.

Abstract: A tampon applicator barrel including a cardboard tube having a first end and a second end and at least one gripping structure defined from the cardboard tube proximate the second end is provided. The cardboard tube has a wall thickness of between about 0.015 and about 0.020 inches, while the gripping structure has a height of up to about 0.035 inches.

Abstract: A method of making an open ended hollow concrete element includes arranging a mold about a substantially horizontal roller shaft, the mold having a sleeve-shaped mold wall defining the outer peripheral shape of the concrete element and first and second end rims, each with an inner periphery smaller than the inner periphery of the mold wall at the respective end and defining the end surfaces of the concrete element. The mold is rotatably supported by the roller shaft by abutment at the inner peripheries of the first and second end rims so that the roller shaft upon rotation defines the inner peripheral shape of the concrete elements. The method further includes rotating the shaft to rotate the mold; feeding curable concrete to the rotating mold; stopping the rotation of the mold; and removing the cured concrete element from the mold. The inner perimeter of the mold wall defines an exterior shape of the concrete element that varies along and/or radially to the direction of the rotational axis.

Abstract: A pipe end is expanded with the aid of an expander tool (1). The expander tool (1) comprises a plurality of jaws (10) that are radially movable between a retracted and an expanded position. The jaws (10) have outer jaw surfaces which are intended for engagement with the inner surface of the pipe end and which lie adjacent to one another in the retracted position of the jaws (10) and have an at least generally circular arcuate shape in cross-section. The expander tool (1) further comprises a piston (2) or cone with a tapered end for moving the jaws (10) between the retracted and the outer expanded positions and the piston (2) is moved in a reciprocating manner in the axial direction before expanding the pipe end gradually in the stages. The axial reciprocating movement of the piston (2) is guided to rotate the jaws (10) to a certain extent in a circumferential direction after each expansion stage.

Abstract: A drawing apparatus is capable of releasing a material, the inner surface of which has been formed into a concavo-convex shape with drawing, from a mold with excellent release performance, even in the case where the concavo-convex part formed in the inner surface of the product is of a shape causing it to get caught in the direction of pulling out of the product against the mold. The mold is formed in a split structure having a concavo-convex surface shape and is contractible in diameter after the forming of the material.

Abstract: Foam sheets are continuously produced by metering foam particles, which are free of any added binder or adhesive, from a storage location onto a moving conveyor at a controlled volumetric rate so as to continuously form a layer of the particles on the conveyor, heating the layer of particles to a temperature sufficient to render the particles tacky such that the particles adhere to one another so as to form a substantially integral sheet, compressing the sheet with a compression device that applies pressure on the advancing sheet so as to compress the sheet to a smaller thickness and enhance the integrity of the sheet; and cooling the compressed sheet.

Abstract: A method for forming a container includes receiving a parison, enclosing the parison with a mold that includes a cavity, and inflating the parison in said mold to form a blow molded container with a moveable region at the cavity. The method further includes repositioning the moveable region before filling the blow molded container.

Abstract: A product and method where a multi-colored product is rotationally molded with no or essentially no blending of the colors. A separation sheet is positioned in the mold to separate relatively adjacent portions of the mold cavity that contain differently colored resins. The separation sheet acts as a barrier to prevent the differently colored resins from blending during the molding process. During the molding process, the molten resins may fuse to opposite sides of the separation sheet, or the separation sheet may melt and disperse, all or in part, within the mold while maintaining a distinct color difference between the differently colored portions of the molded product.

Abstract: Molds and methods for rotational molding are disclosed. The molds for rotationally molding may include an interior surface, an exterior surface, an opening, and a post. The interior surface may define a molding cavity. The interior surface may include a first portion and a second portion disposed opposite the first portion. The opening may extend from the first portion of the interior surface to the exterior surface. The post may extend from the second portion of the interior surface, through the molding cavity, through the opening, and to a distal region.

Abstract: A precast concrete meter pit consisting of a plurality of precast concrete hollow elongated cylindrical wall sections in end to end relation to one another is fabricated by utilizing a slip form packerhead apparatus in which the wall sections are formed with an annular slip ring when concrete is injected into the slip form apparatus.

Abstract: An apparatus and method for manufacturing a candy drinking straws includes a system for arranging a soft mass of sugar composition around a solid mold having a support cord extending from an end thereof, rolling the sugar composition along a surface of the solid mold using a plurality of rotating scrolls rotating around the solid mold to shape the sugar composition into a hollow tube, the sugar composition being pushed along the solid mold onto the support cord, pulling the sugar composition along the support cord to form hollow cylindrical candy, and cutting the hollow cylindrical candy into a plurality of hollow candy segments.

Abstract: Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength. Articles produced from the compositions may also exhibit improved impact resistance properties, enhanced ductile break properties, and improved deflection resistance, which represents a combination of creep and fatigue resistance.

Abstract: A method of inhibiting the growth of algae and like organisms in plastic water tanks exposed to sunlight comprises providing an outer tank surface operative to reflect off a substantial portion of sunlight that hits the tank off the outer tank surface; and providing an opaque inner tank layer operative to substantially prevent sunlight passing through the outer tank surface from entering an interior of the tank. A two layer tank is provided comprising a light colored outer layer and a dark sun-blocking inner layer, and is conveniently made by a rotational molding process.

Abstract: The disclosed method for fabricating low cost laryngeal mask devices includes providing a mold, the mold including interior walls that define a hollow interior volume. The interior volume includes a first portion and a second portion. A liquid plastic material is introduced into the mold, and then the mold is moved so as to coat the mold's interior walls. The liquid plastic material and then allowed to cure. The cured plastic material is then removed from the mold and the cured plastic material includes a generally elliptically shaped plate and a cuff. The cuff is formed from plastic material that coated the portion of the interior walls that defined the first portion. The plate defines a laryngeal side, a pharyngeal side, and a central aperture. An interior perimeter of the cuff is attached to the laryngeal side of the plate proximal to a perimeter of the central aperture. An outer perimeter of the cuff is attached to the laryngeal side of the plate proximal to an outer perimeter of the plate.

Abstract: Liquid containes made from certain ethylene copolymers have been found to leak less, swell and wrap less than conventional plastic liquid containes. The invention therefore provides the use of an ethylene and at least one C3-10 ?-olefin copolymer having the following properties: i) MFR2=2–10; ii) MFR21/MFR2=15–20; iii) density —925–950 g/cm3; iv) molecular weight distribution Mw/MN=2.1–3.5 in the manufacture of a liquid container.

Abstract: The invention concerns a procedure for the production of tubes from concrete mix, whereby the concrete mix is filled into a shaping device, for the purpose of shaping, where it is condensed with a tool. The invention should enable an effective and fast production of concrete tubes with high quality regarding the uniformity of the material characteristics. In such a procedure the concrete mix is condensed in an interspace between two parts of a tool that rotate relative to each other.

Abstract: Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength.

Abstract: A process for the production of polyolefin hollow articles comprises charging the polyolefin with a stabilizer combination comprising (a) at least one compound from the group of the organic phosphites or phosphonites, (b) one or more compounds selected from the group consisting of i.) hydroxylamine derivatives and ii.) amine oxide derivatives and (c) at least one compound from the group of the hindered amine stabilizers, filling this mixture into a mold, heating this mold in an oven to above 280° C., such that the stabilized polyolefin fuses, rotating the mold around at least 2 axes, the plastic spreading to the walls, and cooling the mold while still rotating, opening it and taking the resultant hollow article out.