Abstract: An extrusion head is disposed over a substrate, and material is extruded through an oblique (e.g., semi-circular or tapered) outlet orifice of the extrusion head to form an associated extruded structure having an equilibrium shape that resists settling after being deposited on the substrate. The extrusion head includes fluidic channels having a flat surface formed by a flat first (e.g., metal) sheet, and an oblique (e.g., substantially semi-cylindrical) surface formed by elongated oblique trenches that are etched or otherwise formed in a second sheet. The fluidic channel communicates with the outlet orifice, which has a flat edge formed by the first sheet, and an oblique edge formed by an end of the oblique trench. The material is extruded through the outlet orifice such that its flat lower surface contacts the substrate, and its oblique upper surface faces away from the substrate. Two materials are co-extruded to form high aspect-ratio gridlines.

Abstract: A width-direction multilayer laminated film having a large area and uniform optical properties is provided. A light guide, a light diffusion film, a light collecting film, a viewing angle control film, and an optical waveguide film, which are low cost and have excellent optical properties, as well as an illuminating device, a communication device, and a display using these films. The laminated film may include at least a structure in which a layer made of resin A (layer A) and a layer made of resin B (layer B) are alternately laminated in the width direction, wherein the width of the film is 400 nm or more and the number of layer Bs, each having a cross-sectional width from 0.1 ?m to 10,000 ?m, is 10 or larger.

Abstract: An extrusion die for extruding thermoplastic materials to produce a sheet of substantially uniform thickness, the extrusion die having a manifold width that increases from the centerline toward the die exit or lip. The increasing width manifold arms, with the preland portion, provide a constant shear rate at all areas of the die and a constant residence time, so that every fluid particle path through the die has the same residence time. By having the increasing width manifold arms, the preland area of the extrusion die is decreased, usually by about 30%, often about 40-60%, compared to a Winter die, thus decreasing clam-shelling effect and allowing design and extrusion of wider sheets.

Abstract: An apparatus is provided for manufacturing a laminated sheet wherein different molten resins are alternately laminated by providing a multitude of slits arranged at intervals and permitting the different molten resins to flow out from the adjacent slits. A value of a shortest flow path length (L1) to a longest flow path length (L2) of the molten resin that flows from an inlet to an outlet of the slit, which is a ratio of (L1)/(L2), is 0.5 or more. The slits include slits having different slit lengths. A flow quantity of the molten resin at the slit is changed by changing the intervals of the slits, length of the slits or by changing the temperature of the molten resin at the slits.

Abstract: A co-extrusion head for forming high-aspect ratio gridline structures in a micro extrusion apparatus includes multiple sheets (e.g., metal plates) that are machined and assembled to define three-part fluidic channels having associated outlet orifice disposed along an edge surface of the head. Reference surfaces are also etched in the sheets and are aligned in a straight line that intersects output junctions of the three-channel cavities. After assembly (e.g., using high pressure bonding techniques), each reference surface is located inside a notch defined in the edge surface. The edge surface of the co-extrusion head is then trimmed (e.g., machined by wire EDM) using the reference surfaces as a precise guide, thereby producing uniform length outlet orifices with uniform flow impedance.

Abstract: A die for coextruding a plurality of fluid layers includes one or more distribution plates for forming relatively thick layers, and a microlayer assembly for forming a plurality of microlayers. The die further includes internal fluid passages and/or forming surfaces to allow the microlayers to assemble into a microlayered fluid mass prior to merging with the relatively thick layers from the distribution plates.

Abstract: A gas jet source is used in conjunction with a micro-extrusion printhead assembly in a micro-extrusion system to bias extruded material onto a target substrate. The micro-extrusion system includes a material feed system for pushing/drawing materials out of extrusion nozzles defined in the printhead assembly as the printhead assembly is moved over the substrate. The gas jet source is positioned near the nozzle outlets, and directs a gas jet against the extruded material as it exits the extrusion nozzles such that the extruded material is reliably directed (biased) toward the target substrate. In some embodiments the gas jet causes slumping (flattening) of the extruded material against the substrate, producing low aspect ratio lines that may be merged to form a connected structure.

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 system. Each of the parallel laminated flow streams are subjected to repeated steps in which the flows are divided, and overlapped to amplify the number of laminations. The parallel amplified laminated flows are rejoined to form a cumulated laminated output with nano-sized features.

Abstract: A die for coextruding a plurality of fluid layers generally includes a primary forming stem, one or more distribution plates, and a microlayer assembly. The microlayer assembly includes a microlayer forming stem and a plurality of microlayer distribution plates.

Abstract: The apparatus is for forming a resin film from a resin for a middle portion to form a resin film main body of the resin film and a resin for edge portions to form both side edge portions in a crosswise direction of the resin film. The apparatus comprises: a feed block which includes a joining part where the resin for the middle portion in a molten state and the resin for the edge portions in a molten state are joined in such a manner as to enclose both side edges in the crosswise direction of the resin film main body with the resin for the edge portions; and an extruding die through which the joined resins are extruded to form the resin film. Thus, a method and apparatus for forming the resin film can avoid the inclusion of the resin for the middle portion in the trimmed-off selvages while preventing the film separation of the resins for the middle portion and for the edge portions, and therefore, increase the recyclability and the productivity of the resin film.

Abstract: In a joining section there are columnar distribution pins, on whose periphery a groove is formed. A size of the groove is strictly determined. A first dope and a third dope are fed through the respective grooves such that a width of each dope is controlled. Thereafter, the surface and third dopes are joined with an second dope. Thus a multi-layer stream is obtained and cast through a die lip of a casting die for forming a casting film having a multi-layer structure. The casting film is dried and thus a multi-layer film is obtained.

Abstract: A method and apparatus for extrusion of flat or tubular films from thermoplastic material is described. Improvements concern equalisation of the lateral distribution of the flow velocity achieved in combination with elimination in part or in full of die-lines formed at interfaces where part flows join each other. The improvement involves the provision of edges of the ends of die-walls which separate the part-flows from one another being slanted to form a lateral displacement over the length of said edge, or are provided with screw shaped vanes.

Abstract: The present invention is directed to a bitumen bale capsule, capsule dispenser and bale strip former for viscous bitumen products comprising a bitumen bale capsule; a capsule dispenser (L) in order to position the said PE encapsulating capsule inline with a plurality of dispensing valves (F) and a plurality of forming nozzles (M); a bitumen bale strip former for converting the said round PE encapsulated tubes into flat strips suitable for baling. The overall function of the said bitumen bale capsule is to encapsulate viscous bituminous products forcing through the internal core of the said capsule. The said products exiting the said encapsulation process in the form of a PE round tube are converted into a flat strip suitable for baling utilizing both of the said capsule dispenser and the said bale strip former.

Abstract: One method for making a laminate material comprising a first surface layer comprising resorcinol arylate polyester chain members and a second surface layer suitable for bonding to a substrate, comprises co-extruding a polymeric first surface layer material and a polymeric second surface layer material through a die and into the first nip of a calender roll stack comprising a first surface roll and a second surface roll that define the first nip, to form the laminate material. A nip load in the first nip of greater than or equal to about 400 N/cm can be applied to the laminate, and the laminate material can be collected from the roll stack. The first roll and the second roll can each have a surface smoothness of less than or equal to about 5 micrometers and temperatures of about 40° C. to about 150° C.

Abstract: A coextrusion die for producing a multilayer film or sheet of thermoplastic materials.

Abstract: The apparatus is for forming a resin film from a resin for a middle portion to form a resin film main body of the resin film and a resin for edge portions to form both side edge portions in a crosswise direction of the resin film. The apparatus comprises: a feed block which includes a joining part where the resin for the middle portion in a molten state and the resin for the edge portions in a molten state are joined in such a manner as to enclose both side edges in the crosswise direction of the resin film main body with the resin for the edge portions; and an extruding die through which the joined resins are extruded to form the resin film. Thus, a method and apparatus for forming the resin film can avoid the inclusion of the resin for the middle portion in the trimmed-off selvages while preventing the film separation of the resins for the middle portion and for the edge portions, and therefore, increase the recyclability and the productivity of the resin film.

Abstract: The invention provides apparatus for producing an extrudate product including a plurality of capillary channel. The apparatus comprises an extruder having an inlet, a die including an orifice having a predetermined outer shape and a plurality of needles each having a body including an internal conduit for fluid flow. Each needle further comprises an outlet from the internal conduit at an outlet end. The outlet end of each needle is arranged in a predetermined pattern substantially within the orifice of the die and the conduit of each needle is fluidly connected to a fluid source. In use extrudable material is fed into the extruder through the inlet. The extruder forces the extrudable material around the bodies of the needles towards the die and through the orifice in the die to produce an extrudate having substantially the predetermined outer shape.

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 system. Each of the parallel laminated flow streams are subjected to repeated steps in which the flows are divided, and overlapped to amplify the number of laminations. The parallel amplified laminated flows are rejoined to form a cumulated laminated output with nano-sized features.

Abstract: The present invention provides a slot die that includes a flow passageway that includes a transverse flow-providing manifold, a flow metering section that provides a transverse flow metering gap, and an exit channel that includes an exit orifice. In accordance with the invention, the transverse flow metering gap may beneficially be selected independent of changing the gap or width of the exit office, using one or more normally non-adjustable die bodies.

Abstract: The present invention provides a slot die that includes a flow passageway that includes a transverse flow-providing manifold, a flow metering section that provides a transverse flow metering gap, and an exit channel that includes an exit orifice. In accordance with the invention, a transverse flow metering gap may beneficially be selected independent of changing the gap or width of the exit office, using one or more normally non-adjustable die bodies.

Abstract: The invention relates to spiral distributors on axial or conical spiral blow heads. The invention has discovered that when the circumference of a spiral flock in a spiral mandrel slot increases, it can be advantageous if the height of the spirals can be limited in such a manner that a similar surface covered with spirals is created in the twisted mandrel slots. The invention calls this surface “active surface”. A plurality of aspects of the invention, which specify different rules regarding how to implement the basic observation, are presented.

Abstract: A process by which many kinds of unstretched films comprising a thermoplastic resin are produced each in a small amount and high yield. A thermoplastic resin (A) to be formed into an unstretched film and another thermoplastic resin (B) are separately melted by heating. The thermoplastic resin (B) is introduced to each edge part of a T-die (2) for extrusion. The two resins are ejected and extruded on a casting roll so that the thermoplastic rosin (B) is disposed on the side of each edge of the thermally melted thermoplastic resin (A). Thus, an unstretched film (20) is formed which comprises the thermoplastic resin (A) and the thermoplastic resin (B) disposed on the side of each edge of the resin (A). Thereafter, the parts constituted of the thermoplastic resin (B) are removed y cutting to form a target unstretched film (20) consisting only of the thermoplastic resin (A).

Abstract: A coextrusion adapter for an extrusion installation with extruders and a tool for producing a composite coextrusion structure of thermoplastic material. The coextrusion adapter has a central conduit with an end at an inlet side for connecting an extruder and an end at an outlet side for connecting the tool. The coextrusion adapter has at least one coextrusion conduit with an inlet end and an outlet end. A second extruder can be connected to the inlet end. At an end facing the outlet end the adjusting elements have a wedge-shape adjusting section with one wedge surface facing the central conduit and another wedge surface facing the outlet end of the coextrusion conduit. The adjusting section of the adjusting elements is pivotal around an axis extending over the width of the outlet end by the actuating drives. When an increase of the inside diameter of the respective transverse section of the outlet end occurs the corresponding transverse section of the central conduit is narrowed, and vice versa.

Abstract: An apparatus and method for extruding a multilayered article employs a shearing rod connected to the end of an extruder screw. The shearing rod is rotated along with the extruder screw and shears the polymer materials being advanced along an annular space between the shearing rod and the inner surface of a bore in a housing. A first melt stream of polymer material is advanced by the extruder screw into the annular space. A second melt stream of polymer material is fed (e.g., from a second extruder) through a passage in the housing into the annular space to join with the first melt stream therein. The rotation of the shearing rod shears the melt streams and swirls them together to produce a multiplicity of layers of the polymer materials.

Abstract: An apparatus for manufacturing a strip of rubber compounds comprises four extruders (2a, 2b, 2c, 2d) and a single extruder head (3). The extruder head (3) comprises an extruder die assembly (6) and a main body (4). The main body (4) is composed of a pair of laterally-spaced lateral blocks (11), a central block (10) disposed between the lateral blocks, and a pair of laterally-spaced sub blocks (13) disposed beneath the lateral blocks (11). The central block (10) has a pair of V-form side faces (15) extending in a V-shaped formation down to lateral ends of the bottom face (S1). The lateral blocks (11) are each provided with an upper mount face (21U) and a lower mount face (21L) on which two of the four extruders are respectively attached. An upper preforming channel (24Ua, 24Ub) extending from an extruder to the die assembly has a parting plane along the V-form side face (15). A lower preforming channel (24Lc, 24Ld) extending from an extruder to the die assembly also has a parting plane.

Abstract: An extrusion head device in which fixed and movable head parts as a plurality of separate parts can be easily combined using compact fastening means. Fastening cylinder rods provided for the fixed head part of the extrusion head device including the fixed and movable head parts are expanded, whereby fore-end locking portions at tips of the fastening cylinder rods are inserted into through holes of engaging blocks provided for the movable head to be protruded from upper surfaces of the engaging blocks; stopper-operating cylinder rods provided for the movable head part are expanded, whereby U-shaped stoppers at tips of the stopper-operating cylinder rods are inserted into clearances between the locking portions and the engaging blocks; and then the fastening cylinder rods are contracted, whereby the movable and fixed head parts are brought into tight contact with each other and fastened together.

Abstract: A method of manufacturing an extruded part having an exterior shell and a core foam material. The method includes extruding the exterior shell from an extrusion die, and reaction injection molding the core foam material within an interior of the exterior shell using a distribution block having a plurality of orifices configured to inject the core foam material within the interior of the exterior shell. The orifices are configured to evenly distribute the core foam material throughout the interior of the exterior shell. the method can be used to form an exterior shell having a plurality of internal chambers, where the orifices of the distribution block are configured to inject core foam material within the plurality of internal chambers.

Abstract: A low-pressure CO2 tank or an air compressor with a refrigerated air dryer is attached either at or after the vent zone of a standard twin-screw extruder. During or after extrusion, the gas is dissolved in the wood-plastic melt. The CO2 expands which foams the wood-plastic material.

Abstract: A gypsum wallboard core, and methods and apparatus for making the same are disclosed. Methods of making a gypsum wallboard core include extruding a gypsum slurry containing water, gypsum, slip agents, water-reducing agents, surfactants and, optional additives, through a die and onto a substantially flat, smooth, moving surface. The die has provisions at its outer sides for the introduction of slip agents into the slurry, and provisions at its lateral outer edges for the introduction of a strength-enhancing agent. Once extruded onto the conveyor belt, the slurry is chemically-activated to set and form a hardened board core which then may be easily removed from the conveyor belt and dried.

Abstract: A system produces a multi-layer product by forming as many different ingredients as is required for the final product in steps that can be separate from each other and then combining these ingredients in an extrusion die that is formed to flow the separate ingredients in side-by-side flow paths and then combine them where necessary for the final product to be formed. Specifically, two of the flow paths are sandwiched by a third flow path whereby the final product is in the form of a sandwich with two ingredients in layers between two separate layers of a third ingredient. A specific example of the food product is an animal food treat in the form of a cheeseburger.

Abstract: A food product comprising a sugar wafer preferably cone-shaped having a filling of a substantially water-free fat-based confectionery material and a process for preparing it which comprises filling the sugar wafer with the substantially water-free fat-based confectionery in a molten, semi-liquid or semi-solid mass, and allowing the filling to harden.

Abstract: The manufacturing apparatus of a resin molded product has a feed block that sets a layer configuration of the resin molded product obtained by molding a plurality of molten resins. The feed block includes a feed block body having a through hole, and a plurality of replacement blocks that are removably fitted into the through hole and have layer configuring passages corresponding to different layer configurations. A replacement block before change is pushed out of the through hole by a replacement block having a layer configuring passage corresponding to a layer configuration after change, thereby changing the layer configuration. This allows an easy change of a layer configuration, and in particular, prevents degradation of resin due to heat or oxidation, and reduces time for the change and a material loss even when a significant change of the layer configuration such as a change of a layer arrangement is performed.

Abstract: Injection-molding materials comprised of polycarbonate can be processed into optically isotropic films in a chill roll extrusion method. The optically isotropic films for protecting data carriers (CD-ROMS) from becoming scratched, or they are used as supporting materials for the information layer.

Abstract: The invention concerns a process and apparatus for the coextrusion of rubber mixtures, comprising a main extruder (1) with an extrusion head (10) having at least two flow channels (14, 15), each for a rubber mixture (A, B), the channels opening into an extrusion orifice (18) through which the two rubber mixtures (A, B) are propelled. The extrusion orifice (18) is delimited by a first wall (111) and a second wall (161). The apparatus also comprises at least one micro-extruder (2) for a third rubber mixture (C), whose extrusion head (22) is provided at its end with a nozzle (23) passing through the two flow channels (14, 15) such that the third rubber mixture (C) is inserted into each rubber mixture (A, B) upstream from the extrusion orifice (18).

Abstract: The two belt parts (2a, 2b) of a belt (2) made of plasticatable material are produced with the aid of a first station (6) and a second station (8). The first station (6) includes a rotatable mold drum (14) and a continuous mold belt (18). The mold belt (18) is brought together with the mold drum (14) along a peripheral section via an upper pressure roller (20), a lower pressure roller (22) and a tensioning roller (24) in such a manner that a hollow mold space (26) is formed between the mold drum (14) and the mold belt (18). An extruder (10) is mounted forward of the hollow mold space (26). Furthermore, the first station (6) includes a filament feed (28) for forming a reinforcement layer (4) in the first belt part (2a). For a simplified manufacture of the belt (2), the second station (8) includes only a direction-changing roller (30) in addition to the extruder (12) and a mold drum (16).

Abstract: A tire having a tread composed of two non-conductive layers, each layer containing a circumferential insert of conductive mix, the inserts having a wider interface at the interface of the two layers. An apparatus for extruding a layer, provided with a conductive insert, including a main extruder for extruding a non-vulcanized, non-conductive layer, and a micro-extruder having an extrusion head, provided at its end with a nozzle, for extruding a conductive insert in the layer.

Abstract: The present invention is the apparatus and method for producing a plastic sheet having a pattern produced in a layer therein. The plastic sheet is a single layer sheet or a multi-layer sheet. The pattern is produced by mixing two or more plastic extrudants together in a mixer. The pattern is visible in the layer containing the two or more plastic extrudants because an at least one of the plastic extrudants is at least partially transparent. The mixer used to produce the pattern includes a housing having an end configured to expel the mixture of the two or more extrudants through a plurality of outlets. The mixer further comprises a rotatable shaft and at least one projection coupled to the shaft and rotatable with the shaft, the at least one projection configured to orient the mixture of the two or more extrudants relative to the plurality of outlets in the housing. The mixer further comprising a thrust bearing configured to couple an end of the shaft to the housing.

Abstract: A coat hanger extrusion die wherein the aperture of the die land widens along the extrusion axis of the die to the die exit opening, thereby forming an expansion zone.

Abstract: A method and apparatus for the extrusion of multilayered composite products, is provided. The inventive apparatus includes a coextrusion structure and a partition member. In accordance with the inventive method, the relative orientation of a first shaped flow stream and a second shaped flow stream to one another is changed, and the reoriented shaped streams are melt-laminated to produce a layered composite formed independent of division of a layered precursor stream. The reorientation occurs via a flow sequencer, which may be removably disposed. Beneficially, layered flow streams that differ from one another may be used. The coextrusion structure may advantageously include one or more removably disposed, flow-shaping inserts, and the partition member may be a removably disposed, partition plate.

Abstract: The present invention describes a composite molding comprising at least one polyarylene sulfide and at least one single- or multicomponent silicone rubber. The present invention further describes a process for the production of a composite molding, where molding is carried out in a single-stage process. The present invention finally describes the use of a composite molding as a housing, such as pump housings or resonators.

Abstract: In a road vehicle tire, a two-part layer (2) of elastomeric material is preassembled by co-extruding a first and a second strip (19, 16) through a preforming plate die (26), through which extends at least one pair (27) of tapered flow channels (25a, 25b) having offset, side by side inlets (28, 29) with respective superimposed adjacent lateral portions (30, 32), and substantially coplanar outlets (33, 34) with respective adjacent lateral portions (35, 38) interconnected to define, between the two strips (19, 16), an L-shaped joint (20) wherein a lateral portion (21) of the second strip (16) has an edge (17) substantially contacting a lateral shoulder (22) of the first strip (19), and is superimposed on a thin annular appendix (23) projecting from the shoulder (22) of the first strip (19).

Abstract: This invention relates to a slot die for forming a coating.

Abstract: A method for making a vacuum packaging film includes flowing a plastic melt, from a multi-layer extruder, onto a rotating roller. The plastic melt is then cooled while simultaneously imparting a pattern, via a pattern imparting means, onto the plastic melt resulting in the vacuum packaging film.

Abstract: According to one aspect of the present invention, a method of preparing a film for use in forming a storage bag comprises the steps of: supplying a pre-extruded thermoplastic film, the film having opposite first and second edge portions; extruding a first base onto the first edge, wherein the first base partially overlaps the first edge; and extruding a first profile onto the first base.

Abstract: An apparatus and a process useful for producing patterned gelatin ribbons for forming patterned soft gelatin capsules are disclosed. The apparatus and process use multiple spreader boxes to form a wide variety of possible patterns.

Abstract: An improved conveyor belt laminator for making foam core panels has an internal floating drive mechanism (2, 3), a sliding deckle system (52), a hinged plate front end section (69) to control the rolling bank of foam, hydraulic controls, and is manufacturable from readily available, standard, structural steel components.

Abstract: Methods and apparatuses are provided for the manufacture of coextruded polymeric multilayer optical films. The multilayer optical films have an ordered arrangement of layers of two or more materials having particular layer thicknesses and a prescribed layer thickness gradient throughout the multilayer optical stack. The methods and apparatuses described allow improved control over individual layer thicknesses, layer thickness gradients, indices of refraction, interlayer adhesion, and surface characteristics of the optical films. The methods and apparatuses described are useful for making interference polarizers, mirrors, and colored films that are optically effective over diverse portions of the ultraviolet, visible, and infrared spectra.

Abstract: A process of co-extrusion of a thin electrode sheet with a thin electrolyte polymer sheet directly onto a current collector sheet for a lithium polymer battery.

Abstract: Providing a narrow strip of electrically conductive rubber extending from a lower undertread layer to the surface of the tread by positioning a slotted chimney block in an outer tread rubber passage of a tire tread die and having the chimney block passage in communication with a lower undertread passage of the tire tread die.

Abstract: An extrusion/coating die. The die has an internal cavity and one or more static mixers in the die cavity. The static mixer fills the die cavity at its respective cross section. The die may also have one or more auxiliary inlets for separately admitting material/energy to the die.