Abstract: The invention relates to a single-screw extruder comprising a cylinder (1), which comprises a transition zone (14), and a homogenizing zone (12) that is connected to the transition zone (14), and a screw (2) which is rotatably supported in the cylinder (1) and which has at least two consecutive displacement parts (6, 8) in the homogenizing zone (12), the second displacement part of which in the conveying direction is designed as a shearing part. The aim of the invention is to provide a single-screw extruder which enables an improved melting effect along with an increased throughput, a lowered melt temperature, and an improved pressurization capability.

Abstract: Disclosed is a membrane for polymer electrolyte fuel cells, which is composed of a hydrocarbon anion-ex-change resin membrane wherein an anion-exchange group is covalently bonded to a hydrocarbon resin, and an adhesive layer formed on at least one side of the hydrocarbon anion-exchange resin membrane. The membrane for polymer electrolyte fuel cells is characterized in that the adhesive layer is made of an anion-exchange resin having a Young's modulus of 1-1000 MPa.

Abstract: An extrusion blow-molding method for plastic containers, for example, plastic bottles, is disclosed, wherein a one- or multi-layer plastic tube is extruded with a predetermined extrusion pressure through an annular gap, which is delimited by an extrusion die provided on an extrusion head and a axially adjustable mandrel and which can be adjusted with regard to the width thereof. The extruded plastic tube is introduced into a mold cavity of a blow-molding tool arrangement, blow-molded into a plastic container in accordance with the mold cavity by overpressure and then demolded. Additional plastic material is added in metered quantity to the extruded plastic tube at least in some regions in the direct vicinity of the mouth of the extrusion die.

Abstract: A method for making a ceramic body, the method including: mixing inorganic ceramic-forming ingredients to form a batch; adding a rapidly hydratable cellulosic binder and a liquid vehicle to the batch and further mixing to form a plasticized mixture; extruding the plasticized mixture to form a green body. The green body can then be heated sufficiently to produce a predominant ceramic phase, thereby transforming the green body into the ceramic body.

Abstract: The present invention has as an object to render a photochromic coating layer free from air bubbles and obtain a uniform layer without film thickness unevenness in the coating layer. In the prevent invention, entrained air in a coating fluid stored in a vessel of a coating unit comprising the vessel, a check valve for preventing back-flow of the coating fluid connected to the vessel, and optionally an ejection nozzle connected to the check valve; air existing inside of the check valve; and optionally air existing inside of the ejection nozzle are removed by plugging an outlet of the coating fluid existing downstream of the check valve and then rotating the coating unit on an axis of the vessel and orbiting the coating unit on a revolution axis simultaneously.

Abstract: A liquid carbonizable precursor is infused into a porous preform, and the infused precursor is subsequently pyrolyzed to convert the precursor to a carbon. The carbon enhances rigidity of the preform. In some examples, the preform can be densified to define a carbon-carbon composite brake disc for use in the aerospace industry.

Abstract: Various embodiments related to three dimensional printers, and reinforced filaments, and their methods of use are described. In one embodiment, a void free reinforced filament is fed into an conduit nozzle. The reinforced filament includes a core, which may be continuous or semi-continuous, and a matrix material surrounding the core. The reinforced filament is heated to a temperature greater than a melting temperature of the matrix material and less than a melting temperature of the core prior to applying the filament from the conduit nozzle.

Abstract: A method for curing a resin includes the steps of placing the resin into a reaction vessel, drawing a vacuum in the reaction vessel, positioning the reaction vessel in a gaseous coupling fluid, and applying ultrasonic energy to the coupling fluid.

Abstract: Various embodiments related to three dimensional printers, and reinforced filaments, and their methods of use are described. In one embodiment, a void free reinforced filament is fed into an conduit nozzle. The reinforced filament includes a core, which may be continuous or semi-continuous, and a matrix material surrounding the core. The reinforced filament is heated to a temperature greater than a melting temperature of the matrix material and less than a melting temperature of the core prior to drag the filament from the conduit nozzle.

Abstract: Methods and devices for forming a composite carrier frame assembly used in an injection molding process are described. Methods and devices described herein are well suited for insert molding multiple small pieces into a single injection molded part. The composite carrier frame assembly can include a number of insert attached thereto that are positioned in a pre-determined arrangement such during an injection molding process the inserts are molded in a molded part in the pre-determined arrangement. Each insert can include an anchor portion arranged to be molded in the single injection molded part and an exterior portion arranged to be positioned exterior to the single injection molded part.

Abstract: The present invention pertains to a process for the preparation of a fast-disintegrating tablet (30) containing a medicinal substance, comprising the steps of providing a fluid formulation comprising the medicinal substance, providing a solid element (100) having formed therein at least one cavity, (101) cooling the solid element (100) to a temperature below a freezing temperature of the formulation, filling the cavity with the fluid formulation, solidifying the formulation while present in the cavity (101) to form a solid pellet comprising the medicinal substance without actively shaping the entire surface of the pellet, taking the pellet out of the cavity and drying the pellet in a vacuum to obtain the tablet. The invention also pertains to a system for performing such a process and a package containing the resulting tablet.

Abstract: A three dimensional (3D) object with a rear projection (RP) surface. The 3D object includes an RP element, which behaves as an RP substrate or surface. A structural portion of the 3D object has a first thickness, and the RP element has a second thickness that is less than about one half of the first thickness. The RP element is formed of a translucent white plastic for example, such that it is translucent to provide an RP element integrally formed with an adjacent structural element which is opaque with or without additional coating or treatment.

Abstract: A mold for the nanoimprint lithography and a method for forming the mold are disclosed. The mold comprises a base socket, a plug chip and an adhesive. The plug chip provides a fine pattern to be transcribed in a top surface thereof. The base socket provides a pocket within which the plug chip is set such that the top surface thereof is pushed out from the top surface of the base socket.

Abstract: Methods and apparatus for separating mold sections, removing a lens product from the separated mold sections, and transferring the lens product to a processing tray are provided and include contacting assembled mold sections with a warm fluid to break fused portions between the mold sections, and using one or more wedge shaped elements to pry apart and separate the mold sections, one from the other. A vacuum head having multiple vacuum ports is employed for lifting the newly molded lens product from a mold section and for releasing the lens from the vacuum head into a processing tray. A cylinder of flowing air directed around the circumference of the lens is effective to maintain the lens in an unfolded position as the lens is being released into the processing tray. A tray set including multiple trays holding multiple lenses is provided and includes features for enabling visual and/or mechanical distinction of the trays and lenses held thereby.

Abstract: A mixer for mixing an exhaust flow with a fluid injected into an exhaust pipe includes a tubular housing having a reduced size center portion positioned between first and second ends. The housing includes circumferentially spaced apart apertures extending through the center portion. A first mixing element includes a first peripheral portion positioned within one of the apertures and a second peripheral portion positioned within another one of the apertures. A second mixing element includes third and fourth peripheral portions positioned within other apertures of the housing.

Abstract: An improved method and apparatus for making structures and forts out of snow or other types of formable material. The apparatus includes a collapsible and stackable form comprising a plurality of vertical wall members connected along adjacent vertical edges to form a geometric volume that include support openings along its wall members lower edges for receiving a support member, and further having an open top and bottom perimeter which allows the stackable form to be continuously filled, removed and stacked on top of previously formed block members thus allowing the user to create multiple tiered structures.

Abstract: Methods of forming a feedthrough using a mold that defines a cavity when closed and includes one or more cores configured to move in and out of the mold cavity. The methods include injecting non-electrically conductive powder injection molding (PIM) feedstock into the mold cavity to form an insulative body around a portion of each of the cores disposed in the mold cavity, removing each of the cores from the insulative body to form one or more core cavities in the insulative body, injecting electrically conductive PIM feedstock into the core cavities to form one or more conductors in the core cavities, respectively, and sintering the insulative body and the conductors to form the feedthrough.

Abstract: Methods of manufacturing wearable articles include: (a) performing a scan of a body part of a user on which the wearable article will be worn; (b) creating a virtual design of a mold insert configured to mold the wearable article, based on the scan; (c) saving the virtual design in a data file; (d) fabricating the mold insert using a laser sintering, fused deposition modeling, and stereolithography technique; (e) inserting the mold insert into a mold; (f) inserting moldable material into a cavity created at least in part by the mold insert; (g) molding the moldable material to produce the wearable article; and (h) removing the wearable article from the mold. The wearable article may include a portion of an article of footwear, such as a portion of a shoe sole.

Abstract: An apparatus and method for making a three-dimensional object from a solidifiable material using a linear solidification device is shown and described. In certain examples, the linear solidification device includes a laser diode that projects light onto a scanning device, such as a rotating polygonal mirror or a linear scanning micromirror, which then deflects the light onto a photohardenable resin. As a result, the linear solidification device scans a line of solidification energy in a direction that is substantially orthogonal to the direction of travel of the laser diode. In other examples, the linear solidification device is a laser device array or light emitting diode array that extends in a direction substantially orthogonal to the direction of travel of the array.

Abstract: A method of preparing a tip for lithography, includes forming a mold having at least one recess; disposing a first polymer in the recess to form an apex of the tip,; curing the first polymer in the recess; and disposing a second polymer in the recess to form a base of the tip. The Young's Modulus of the second polymer is lower than the Young's Modulus of the first polymer. The tip structure for lithography includes a substrate, and a layered structure including a tip having an apex of a first polymer and a base of a second polymer. The first polymer is less resiliently deformable than the second polymer.