Disclosed herein is a die assembly comprising a first attachment block having a passage, an inlet port and an exit port; where the passage is operative to transport a molten material from the inlet port to the outlet port; a die; and a conduit; where the conduit comprises a passage that is operative to transport the molten material from the first attachment block to an entry port of the die; where the die comprises a first outer tube; and an extrusion pin that comprises a post and fins; where the extrusion pin is located in the first outer tube using the fins and where the post extends from the fins in a direction away from the entry port of the die; and where the post comprises one or more passages; where at least of these passages open to the atmosphere to provide for pressure equalization; and a travelling template; the template being operative to contact an extrudate that emanates from the die and to transfer a texture to a surface of the extrudate by virtue of pressure applied by a guide tube to the extrudate via the travelling template.

An extruder assembly for forming a multi-layered composite is described, the extruder assembly includes an extruder head having a first and second flow passage, a first and second extruder in fluid communication with the respective first and second flow passage, and a splice bar having a first and second passageway extending from a rear side to an outlet side, and communicating flow from the first and second passageway to an outlet die. The splice bar further includes a groove located on the rear side of the splice bar and being positioned between the first and second passageway.

A honeycomb extrusion die (120) with improved wear properties. Extrusion die has a die body (121) with inlet (122) and exit (123) faces, feedholes (124) with feedhole entrances (124A) and outlets (124B), and a plurality of die pins (126) having side surfaces (128) configured to define a matrix of intersecting slots (130). At least some of the intersecting slots and die pins define a slot structure with divots (132) formed in the side surfaces of the die pins between the feedholes and the exit face, entrance slot portions between the feedhole outlets and the divots, the entrance slot portions having an entrance slot width W.sub.A, and exit slot portions between the divots and the exit face, the exit slot portions having an exit slot width W.sub.B, wherein W.sub.A>W.sub.B over an entire slot length. Methods of manufacturing honeycomb structures using the honeycomb extrusion dies and of fabricating the extrusion dies are provided as are other aspects.

An extruding process and assembly for creating a structural form, which includes the steps of bundling and conveying at least one length of a material into an extruder, reshaping a cross section of the bundle in a first stage of the extruder, extruding a material using any combination of heat and pressure around and between the lengths of material, and outputting a finished article having a cross sectional profile in which the materials are structurally supported by the extruded and hardened material. Other steps include an intermediate chilling stage between reshaping and extruding, and for preventing the extruded material from back flowing. The extruded material further includes any of a polymeric or structural foam material and can exhibit any of a rounded, square, rectangular or I beam cross sectional profile.

An apparatus and method of manufacturing a porous ceramic segmented honeycomb body (340,340) comprising axial channels (216) extending from a first end face (220) to a second end face (224). A plurality of porous ceramic honeycomb segments (204) is moved axially past respective apertures (110) of an adhesive applying device (100). Adhesive (118) is applied through openings (126) in the adhesive applying device (100) onto peripheral axial surfaces of each porous ceramic honeycomb segment (204). The plurality of porous ceramic honeycomb segments (204) enters a wide opening (318) of a tapered chamber (314) and exits a narrow opening (322) of the tapered chamber (314); a tapered wall (326) from the wide opening (318) to the narrow opening (322) presses the plurality of porous ceramic honeycomb segments (204) together forming the porous ceramic segmented honeycomb body (340,340). The adhesive (118) on the peripheral axial surfaces between respective porous ceramic honeycomb segments (204) is distributed by the pressing.

A cutting device for comminuting pasty substances, has a nozzle with a nozzle housing which has at least one inlet and one outlet. The inlet has an entry flow cross section through which the pasty substance enters the nozzle. The outlet has an exit flow cross-section through which the pasty substance exits the nozzle. A flow duct leads from the inlet to the outlet. A rotating cutting tool is disposed on the outlet for cutting the exiting pasty substance. The exit flow cross-section has the shape of a closed or interrupted annular gap which is formed by a central member within the nozzle and an internal wall of the flow duct. The central member in the conveying direction of the pasty substance increases in terms of the cross section.

An extrusion apparatus is provided with a cylindrical die, a core that is placed inside the die, that is able to move relatively to the die in an axial direction of the die, and that forms a flow path for molten resin between the core and the die, a recessed portion that is provided partway along the flow path and that is recessed in the axial direction, and a separator that is inserted into the recessed portion in the axial direction, an insertion position of the separator in the axial direction changing in conjunction with the movement of the core relative to the die, and that cuts the molten resin by means of a portion thereof that extends from the recessed portion into the flow path.

A head is provided for the co-extrusion of a complex rubber profiled element for the manufacture of a tire. The head makes it possible to co-extrude a sublayer and a tread with inserts. To this end, the head includes, from upstream to downstream: a) a first extrusion duct divided into various sub-ducts, b) a discontinuous first profiling blade, c) a second extrusion duct divided into various sub-ducts, d) a discontinuous second profiling blade incorporating at least one third extrusion duct in the continuation of a divider, and e) a first profiling blade having a projecting tooth in front of and next to each outlet of a third duct in the transverse direction.

A die is provided for extruding elongate particles suitable for use in catalysis. The die comprises a plurality of channels extending from an inlet to an outlet. From the inlet to the outlet each channel comprises a first section with a helical bore with a non-circular cross-section, and a second section with a cylindrical bore. The cylindrical bore of the second section which has a diameter equal or greater than that of the first section. The second section is at least twice as long as a diameter of the first section.

An extrusion die includes a plurality of studs, a tuning assembly and a restrictor member. The tuning assembly comprises a wedge member, first and second adjustment members, and an adjustment control having a rotatable single point adjustment member. The wedge member is coupled to first ends of the studs and includes a first and second plurality of channels within. The first and second adjustment members have a plurality of protrusions, each of which is positioned within a respective one of the first and second plurality of channels. The restrictor member extends in the longitudinal direction and is coupled to second ends of the studs. Rotation of the single point adjustment causes each of the protrusions to move within each respective channel forcing the wedge member, the studs, and the restrictor member to move in a direction that is substantially perpendicular to the longitudinal direction.