Adjustable Shaping Orifice Or Shape Imparting Insert Member (e.g., Core, Etc.) Patents (Class 425/466)
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Publication number: 20070190201Abstract: An extruder die assembly is provided having a die support body, an outer die member, an inner die member, and an actuator. The outer die member has an outer die lip. The outer die member is supported by the die support body. The inner die member has an inner die lip spaced from the outer die lip in order to provide an annular die gap therebetween. The inner die member is supported for movement by the die support body. The actuator is coupled with the inner die member to move the inner die member relative to the outer die member. A method is also provided.Type: ApplicationFiled: February 13, 2007Publication date: August 16, 2007Inventor: Jere E. Irwin
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Patent number: 7175415Abstract: The invention relates to a moulding system (3), in particular a calibration die (17), for an extrusion plant, with preferably parallel inlet and outlet faces (28, 29) spaced at a distance apart and with side faces (30, 31, 32, 33) extending between them. A longitudinal axis for the object to be fed through a calibration orifice (24) is disposed substantially perpendicular to the inlet and outlet face (28, 29). Provided between a shaping surface (25, 26) and a side face (30, 31, 32, 33) is a gap (37, 38) extending at least across a part of the distance between the inlet and outlet face (28, 29). The gap (37, 38) is disposed between several immediately adjacent parts of several shaping surfaces (26) of the calibration orifice (24) and at least one of the side faces (30, 31, 32, 33). At least the parts of the shaping surfaces (26) co-operating with the gap (37, 38) are displaceable relative to the other shaping surfaces (25).Type: GrantFiled: March 18, 2003Date of Patent: February 13, 2007Assignee: Greiner Extrusionstechnik GmbHInventor: Reinhold Kössl
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Patent number: 7172403Abstract: 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.Type: GrantFiled: January 9, 2004Date of Patent: February 6, 2007Assignee: National Gypsum Properties, LLCInventor: W. Roy Burke
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Patent number: 7163388Abstract: A polymer extrusion head for forming continuous shapes having one or more lumens therein. The head includes an extrusion mandrel and die. At least one lumen pipe is disposed radially through a port in the die to intersect the polymer flow in the annular region between the tip and the die. The lumen pipe is a welded assembly having a 90° turn formed as a mitered joint with zero bend radius. The lumen pipe is held in a pin vise engaged in the die such that position of the lumen pipe may be readily adjusted. Axial and radial positions are established during assembly by means of a gauge block. A plurality of lumen pipes may be accommodated for a plurality of lumens by a manifold distribution system including individual lumen pipe assemblies.Type: GrantFiled: May 19, 2004Date of Patent: January 16, 2007Assignee: Cangen Holdings, Inc.Inventors: Prem Anand, Joseph T. Chapin
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Patent number: 7160094Abstract: A die assembly (10) having a first die part (12), which includes a first lip (16) that, in combination with a second lip (18), defines a feed gap (20). The first die part (12) also includes a rear portion (22), a front portion (24), a slot (26) between these portions (22,24), and a gap-setting device (28) that is mechanically movable within the slot (26) so as to enable the movement of the front portion (24) relative to the rear portion (22). The first lip (16) is carried by the front portion (24), whereby movement of the front portion (24) in one direction moves the first lip (16) relative to the second lip (18), thereby adjusting the feed gap (20). The geometries of the slot (26) and the gap-setting device (28) are such that movement in a second opposite direction is limited to a known position, thereby providing a registration position for the front portion (24) of the first die part (12) and thereby providing a registration position for the first lip (16).Type: GrantFiled: May 21, 2004Date of Patent: January 9, 2007Assignee: Avery Dennison CorporationInventor: Mark Wyatt
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Patent number: 7156639Abstract: A device for producing filaments, in particular, from a thermoplastic polymer, wherein the filaments emerge from the spinneret openings of a spinneret plate. A distribution device is provided for distributing the molten polymer being supplied over a preliminary spinning width. At least one exchangeable distribution plate with several distribution openings that are distributed over the spinning width is arranged downstream of the distribution device. The exchangeable spinneret plate is arranged downstream of the distribution plate, wherein said spinneret plate contains spinneret channels that are distributed over the final spinning width. The spinning width defined by the distribution openings is smaller or larger than the preliminary spinning width, and the preliminary spinning width can be reduced or enlarged to the final spinning width with the aid of the distribution plate. The desired final spinning width can be adjusted by exchanging the distribution plate.Type: GrantFiled: June 10, 2004Date of Patent: January 2, 2007Assignee: Reifenhauser GmbH & Co. MaschinenfabrikInventor: Michael Baumeister
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Patent number: 7150614Abstract: Disclosed is an apparatus and a corresponding method for producing a continuous foamed extrudate product in which the extrusion and initial expansion of the foamed extrudate is conducted within a chamber under a partial vacuum. The foamed extrudate is then removed from the chamber through an orifice submerged within a liquid baffle. The dimensions of the foamed extrudate are monitored as it approaches the orifice and, if necessary, the effective sizing of the orifice is adjusted through the movement of a pair of side gates and a single vertical gate arranged external the orifice to match opening to the foamed extrudate and impede the flow of liquid into the chamber through the orifice.Type: GrantFiled: December 18, 2003Date of Patent: December 19, 2006Assignee: Owens Corning Fiberglas Technology, Inc.Inventor: Robert L. Sadinski
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Patent number: 7134308Abstract: The invention relates to an extruder tool for producing a cylindrical body which consists of plastic mass and has at least one recess extending in the interior thereof. The extruder tool comprises an extruder nozzle which has a narrowing region and a nozzle mouthpiece. The nozzle mouthpiece forms a cylindrical channel. In addition, a carrier device is provided, at which a number, which corresponds with the number of internal recesses, of threads is fastened or which has a number, which corresponds with the number of internal recesses, of channels for threadlike pressing of a volatile filler material into the mass flow. The carrier device consists of a number, which corresponds with the number of internal recesses, of carrier elements preferably of pin-like construction. Each of the carrier elements is fastened to the extruder nozzle in the region of the nozzle mouthpiece or in the tapering region and is preferably adjustable in radial direction.Type: GrantFiled: June 27, 2003Date of Patent: November 14, 2006Inventor: Arno Friedrichs
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Patent number: 7131829Abstract: A spiral die assembly can obtain a homogeneous pipe body, an inflation film with/without drawing and a functional film by dispersing molten resin homogeneously, and the spiral die assembly is capable of being applied to various molten resins and extruding conditions. The spiral die assembly comprises a main body 1 of said spiral die assembly, a mandrel 2 having a spiral groove 3 around its outer surface inserted on the inside of the main body and a rotatable ring 5 having a desired width fitted along the outer surface of the spiral groove 3 and fitted in a portion of a die cylinder which forms the inner surface of the main body 1 in a range corresponding to both ends of the spiral groove 3.Type: GrantFiled: July 2, 2004Date of Patent: November 7, 2006Assignee: Yamaguchi Mfg. Works, Ltd.Inventors: Toshiaki Nagai, Mikiyasu Masaki, Shigejiro Yamaguchi
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Patent number: 7108817Abstract: A die for producing flat sections, in particular a flat-sheet die for extrusion of ceramic green films, has a slot-shaped die outlet which opens in an outlet orifice. The height of the slot-shaped die outlet narrows beginning in the immediate vicinity of the outlet orifice and continuing to the outlet orifice. The die outlet is preferably formed by a first lip and a second lip situated opposite the first, having a constant first distance in at least some areas outside the immediate vicinity of the outlet orifice, and having at the outlet orifice a second smaller distance in comparison with the first distance, the first distance between the lips decreasing linearly to the second distance in the area of the immediate vicinity of the outlet orifice.Type: GrantFiled: November 23, 2001Date of Patent: September 19, 2006Assignee: Robert Bosch GmbHInventors: Martin Pyczak, Bettina Schmidt, Jochen Gaenzle, Ulrich Eisele, Martin Schubert
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Patent number: 7104778Abstract: An apparatus (10) for changing the width of an internal die cavity (12) to accommodate product width changes has a die end plate (14) with a front surface facing the internal die cavity (12), a rear surface and defines an opening that extends through the front and rear surfaces. An internal deckle mounting block (16) attaches to the rear surface of end plate (14). An internal deckle has inner (18) and outer (20) members and mounts on the mounting block (16). Inner member (18) extends through the opening of the die end plate (14) and defines a chamber (22) and a first longitudinal slot (24). The outer member (20) is positioned about the inner member (18) concentric therewith and defines a second longitudinal slot (26). The inner member (18) rotates about the outer member (20) to vary alignment of the slots and create a passageway narrower than either slot to control coating thickness.Type: GrantFiled: March 16, 2004Date of Patent: September 12, 2006Assignee: Eastman Kodak CompanyInventor: Richard D. Bomba
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Patent number: 7101168Abstract: The invention relates to a device for forming a number of thin-walled objects by means of a blow-moulding process from a layer of material which is deformable when heated, comprising: a lower mould with cavities (6) arranged therein, wherein the shape of each of the cavities (6) corresponds with the external shape of the objects to be formed; means for carrying the layer of material to be moulded onto the lower mould; supply means for supplying gas to the upper side of the lower mould; heating means for heating the lower mould; and mandrels movable into the cavities, wherein the lower mould is divided into a number of segments (5), wherein a number of segments (5) is placed around each cavity and the segments are movable in substantially radial direction between a first position, in which they form the wall of the cavity enclosed by the segments (5), and a second position in which an object (19) formed in the cavity can be moved out of the mould.Type: GrantFiled: September 8, 2000Date of Patent: September 5, 2006Assignee: Weasy Pack International Ltd.Inventor: Louis R. H. A. Willemsen
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Patent number: 7101167Abstract: A rotary tool such as a helix drill and an end mill for example, is manufactured by forming a blank by an extrusion process, and then sintering the blank. During the extrusion, a mixture is passed through a die which provides a cylindrical shape to the outer peripheral surface of the mixture. A plurality of jaws are disposed downstream of the die for conducting the mixture. Each jaw includes a helical ridge for engaging the outer surface of the extrudate to cause a helical groove to be formed therein which constitutes a chip flute in the tool. During the extrusion, the jaws are moved away from the mixture to terminate formation of the chip groove, whereby a shank portion of the tool is formed.Type: GrantFiled: April 24, 2002Date of Patent: September 5, 2006Assignee: SECO Tools ABInventors: Mattias Puide, Johnny Bruhn, Mikael Grönkvist
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Patent number: 7074027Abstract: Extrusion dies for forming dual wall corrugated plastic pipe and dual wall plastic pipe having a foam annular core that provides homogenous melt flow to each axially displaced orifice by means of an individual concentric spiral mandrel are disclosed. Spiral mandrels transport the melt from the extruders initially in spiral paths and then to spiral paths having diminishing depths so that the melt from adjacent spiral paths mix axially resulting in an annular path of homogenous melt. Extrusion dies for real time, continuous and remote control of the openings of the axially displaced orifices by moving the die lip closest and furthest from the extruder in a precise manner are also disclosed. A means for controlling separation of the die lips for both the inner and outer wall walls of the pipe gives the pipe manufacturer the benefit of better controlling quality in real time and changing grades on the fly by controlling wall thickness.Type: GrantFiled: February 19, 2001Date of Patent: July 11, 2006Inventor: Joseph M. Starita
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Patent number: 7056112Abstract: An improved extrusion die and a method for using the same that minimizes the deflection of the die exit by providing the walls of the extrusion die with areas of increasing thickness that increase from the die ends to a central location. The die wall thickness is varies such that there is minimal deflection created at the die exit.Type: GrantFiled: June 2, 2003Date of Patent: June 6, 2006Assignee: Extrusion Dies Industries, LLCInventor: John A. Ulcej
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Patent number: 6991448Abstract: An extrusion apparatus which satisfactorily adjusts differences in skin-body flow rates at multiple locations around the die, and allows for the external manipulation of the interior components controlling batch flow, during the production without having to stop manufacturing operations to effect the necessary changes thereat.Type: GrantFiled: April 1, 2003Date of Patent: January 31, 2006Assignee: Corning IncorporatedInventor: Robert B. Lubberts
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Patent number: 6979189Abstract: An apparatus and method to adjust the dimensions of thermoplastic components following passage of the component through final processing in a fixture. The invention particularly relates to an apparatus for maintaining product tolerances on thermoplastic components that have undergone post-form extrusion. In addition, the invention relates to a method for maintaining product tolerances on post-form extruded thermoplastic materials.Type: GrantFiled: July 16, 2003Date of Patent: December 27, 2005Inventors: Rex Baxter, Ade Adebo
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Patent number: 6953333Abstract: An extruder head for extrusion blow-molding plastic containers includes a ring gap nozzle with a mandrel and a ring-shaped nozzle body. An elastically deformable sleeve is arranged on an end of the nozzle outlet side and defines a gap width which can be varied by axial setting movements of the mandrel and/or the nozzle body. The geometry of the nozzle gap can be influenced by radially deforming the sleeve with setting devices during the extrusion of a hose-shaped preformed blank. The sleeve may be moved in a radial direction and is guided on sliding surfaces which support it in upward and downward directions. The sleeve may be in the form of a cylinder or tube. A lower edge of the sleeve shapes a cross-section of a melt stream exiting from the ring gap nozzle.Type: GrantFiled: July 7, 2000Date of Patent: October 11, 2005Inventors: Harald Feuerherm, Günther Kappen
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Patent number: 6926512Abstract: 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.Type: GrantFiled: December 31, 2001Date of Patent: August 9, 2005Assignee: BP Corporation North America Inc.Inventors: Jesse Wu, James H. Han
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Patent number: 6926509Abstract: An extruder apparatus and method for producing an extruded tubing having varying inner dimensions without changing the outer dimensions. The tubing is forced from the die face of an extrusion head having an extruder die and an internal mandrel determining the outer and inner dimensions, respectively, of the extruded tubing. The outer dimensions of the mandrel varied by the user to change the inner dimensions of the extruded tubing. A pressure is maintained in the extruded tubing to prevent its collapse and that pressure is changed based upon the change of the external dimensions of the mandrel and the wall thickness of the tubing. In one embodiment, the mandrel is comprised of a core and a plurality of telescoping sleeves. Each sleeve is movable between a retracted position where the sleeve is displaced away from the die face and an extended position where sleeve is at the die face. There may be multiple mandrels in the case of multi-lumen catheters.Type: GrantFiled: May 31, 2002Date of Patent: August 9, 2005Assignee: NDH Medical, Inc.Inventors: Scott W. Nicora, Geary A. Havran
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Patent number: 6902388Abstract: A die module is constructed for an extrusion die which provides for the adjustment of the concentricity of the exit configuration by allowing relative movement of the die within the extrusion die assembly. The die is mounted on a die holder through a pair of mounting rings which fit into a recess in the die body. The rings are constructed with interface surfaces having a curvature with a center upstream. The interface surfaces form a seat within which the die holder is contained with mating surfaces engaging the interface surfaces to allow pivot motion about the center of curvature of the interface surfaces. The engaging surfaces are in the shape of a partial hemisphere to simulate a universal motion. Adjustment bolts are located in the extrusion die assembly downstream of the interface. Bolts, which secure the rings to the die holder, are constructed to provide a fixed spatial relation of the engaging surfaces.Type: GrantFiled: May 22, 2003Date of Patent: June 7, 2005Assignee: Guill Tool and Engineering Co., Inc.Inventors: Glen Albert Guillemette, James Prue
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Patent number: 6896504Abstract: For producing coiled bakery products comprising two strands each made of an outer and an inner doughy substance, a nozzle arrangement (12) comprises two inner nozzles (14, 16), which are each surrounded by an outer nozzle (18, 20), wherein all of the nozzles (14, 16, 18, 20) are rotatable about a common axis of rotation (148).Type: GrantFiled: February 5, 2002Date of Patent: May 24, 2005Assignee: Hosokawa Bepex GmbHInventors: Marc Horna, Frank Altvater
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Patent number: 6890169Abstract: A die is mounted within an extrusion die assembly to pivot with respect to the die body and thereby adjust the concentric position of the die with respect to the tip and the product to be coated. Spherical surfaces are formed in an intermediate support module to engage mating surfaces formed on the die holder. The spherical surface surround the die holder and are clamped together by screws which are limited in tightening, to avoid binding the pivotal movement between the spherical surfaces and the die holder.Type: GrantFiled: March 1, 2002Date of Patent: May 10, 2005Assignee: Guill Tool & Engineering Co., Inc.Inventors: Glen Albert Guillemette, James Prue
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Patent number: 6854969Abstract: A honeycomb structure molding apparatus 1 having a spinneret 4 provided with a back pore part 3 for introducing a molding material and a slit part 2 for extruding the molding material, and a press plate 5 for fixing the spinneret 4, in which the spinneret 4 comprises an inner side part 11 and an outer peripheral part 12, the inner side part 11 is protruded to the downstream side to form a level difference part 15 between the inner side part 11 and the outer peripheral part 15, the press plate 5 is opened opposing the inner side part 12 of the spinneret 4 and presses the downstream side of the outer peripheral part 12 of the spinneret 4 through a gap part 7, and there is provided a gap adjusting means 130 capable of changing width of the gap of the gap part 7.Type: GrantFiled: March 22, 2002Date of Patent: February 15, 2005Assignee: NGK Insulators, Ltd.Inventors: Yukinari Shibagaki, Takeyuki Isii, Yoshimasa Kondo
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Publication number: 20040265414Abstract: An extrusion molding system includes a movable die arranged at an output end of an extruder to be movable in an optional direction, a cooling water tank arranged to extend linearly from an outlet of the movable die, and a plurality of restrictors arranged in series in the cooling water tank to be moveable in an optional direction. Each restrictor has a passage formed therethrough to restricted the passing position and direction of a work by passing the work through the passage.Type: ApplicationFiled: May 27, 2004Publication date: December 30, 2004Applicant: KINUGAWA RUBBER IND. CO., LTD.Inventor: Takayuki Kobayashi
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Patent number: 6830444Abstract: An extrusion die for extruding biodegradable material, the extrusion die including: a mandrel; an outer member positioned near the mandrel; an extrusion orifice between the mandrel and the outer member; a member in communication with at least one defining member of the extrusion orifice, wherein the member is capable of producing relative movement between outer member and the mandrel, wherein the relative movement has a component transverse to an extrusion direction of biodegradable material through the extrusion orifice; a flow control device which controls flow of biodegradable material through the extrusion die; and a positioning device which positions the outer member and the mandrel relative to each other.Type: GrantFiled: February 12, 2003Date of Patent: December 14, 2004Assignee: Amelex CorporationInventors: Hans G. Franke, Donald R. Bittner
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Publication number: 20040247723Abstract: A die assembly (10) having a first die part (12), which includes a first lip (16) that, in combination with a second lip (18), defines a feed gap (20). The first die part (12) also includes a rear portion (22), a front portion (24), a slot (26) between these portions (22,24), and a gap-setting device (28) that is mechanically movable within the slot (26) so as to enable the movement of the front portion (24) relative to the rear portion (22). The first lip (16) is carried by the front portion (24), whereby movement of the front portion (24) in one direction moves the first lip (16) relative to the second lip (18), thereby adjusting the feed gap (20). The geometries of the slot (26) and the gap-setting device (28) are such that movement in a second opposite direction is limited to a known position, thereby providing a registration position for the front portion (24) of the first die part (12) and thereby providing a registration position for the first lip (16).Type: ApplicationFiled: May 21, 2004Publication date: December 9, 2004Inventor: Mark Wyatt
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Patent number: 6813820Abstract: The invention is a method of forming extrudate having substantially uniform thickness. A shim is formed which has a thickness variation of less than or equal to about 0.5 mil (13 microns) total indicated runout. This shim is disposed between a first die portion having a first surface and a second die portion having a second surface. A slot is formed between the first surface and the second surface. The slot has a height dimension substantially the same as the shim thickness. Flowable material is extruded through the slot.Type: GrantFiled: December 19, 2001Date of Patent: November 9, 2004Assignee: 3M Innovative Properties CompanyInventors: James M. Nelson, Raghunath Padiyath, Robert B. Secor, Mark J. Stevenson, Michael J. Tichy, Robert A. Yapel
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Publication number: 20040217510Abstract: The invention provides a spinnerette assembly for forming multicomponent hollow fibers of the sheath/core type. The spinnerette assembly contains an extrusion orifice and a core forming material passage in communication with the extrusion orifice. A hollow needle extends through the extrusion orifice in a concentric manner to define an annular passage surrounding the needle. The core forming material passage includes a core forming material inlet port extending from a surface of the spinnerette assembly to an interior of the assembly and a transverse passage extending from the core forming material port to the annular passage surrounding the needle. A bore forming fluid passage communicates with the interior of the needle. The spinnerette assembly contains at least one sheath forming material passage also in communication with the extrusion orifice.Type: ApplicationFiled: June 3, 2004Publication date: November 4, 2004Inventor: Samuel Earl Moore
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Patent number: 6805543Abstract: For producing coiled bakery products, a nozzle arrangement (10) comprises an inner nozzle (14), which is disposed coaxially with an axis of rotation (26), and an outer nozzle (18, 19), which is disposed axially offset relative to said inner nozzle (14), wherein the outer nozzle (14) is rotatable about the axis of rotation (26).Type: GrantFiled: February 1, 2002Date of Patent: October 19, 2004Assignee: Hosokawa Bepex GmbHInventors: Günther Fux, Frank Altvater
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Patent number: 6799961Abstract: The application relates to a device for adjusting the gap of a die arrangement using a thermopin, which is connected to the die lip (10) without any play by means of a clamp-type socket (7), where the clamp-type socket (7) engages on the one had in a lip nose (11) and on the other hand in a groove (5) of the thermopin (1), where the lip nose (11) is an integral part of the die lip (10) and the clamp-type socket (7) has a bore (8), and the thermopin (1) has a bore (4) and a fixing means is passed through the bores (8) and (4).Type: GrantFiled: July 10, 2001Date of Patent: October 5, 2004Assignee: Trespaphan GmbHInventors: Albrecht Freynhofer, Helmut Kremp, Dieter Mathieu, Wolfgang Rasp
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Patent number: 6787092Abstract: There is provided a pipe extrusion die that includes a first and second die assembly. The first and second die assembly each include an extrusion head, a nozzle carrying an outer die lip, a hollow mandrel, an inner mandrel carrying an inner die lip, and a layer-forming channel. The layer-forming channel is defined by the space between the nozzle and inner mandrel. The extrusion die includes a space between the nozzle of the second die assembly and the inner mandrel of the first die assembly such that the first and second die assembly do not share a common wall. The space between the inner and outer die lip (die gap) can be individually adjusted and the second die assembly is freely movable relative to the first die assembly. The extrusion die also includes a vacuum cooling mandrel with a single cooling channel and multiple vacuum ports that provide improved vacuum control over the final die product.Type: GrantFiled: April 6, 2001Date of Patent: September 7, 2004Inventors: Harry Chan, Elio Moy
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Patent number: 6773255Abstract: Multilayer plastic composites containing at least two incompatible plastics, A and B, in which the layering sequence alternates between A and B, the layers of plastic B are discontinued at regular intervals, and the resulting gaps in the layers are filled in with plastic A, exhibit good adhesion between the layers. In preferred embodiments of the invention, the amorphous, crystalline, or semi-crystalline plastic B has a higher coefficient of thermal expansion than the amorphous plastic A. The plastic composite is preferably produced via coextrusion.Type: GrantFiled: May 15, 2001Date of Patent: August 10, 2004Assignee: Roehm GmbH Chemische FabrikInventors: Volker Benz, Hans Lorenz, Michael Meier-Kaiser, Michael Müller, Klaus-Ernst Pöhlmann
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Patent number: 6773249Abstract: The invention relates to an extrusion head for producing a tubular parison (22) in order to manufacture large-volume, blow molded plastic hollow bodies. The inventive extrusion head has an adjustable ring-shaped tube outlet nozzle for selectively adjusting the nozzle opening (20) in order to alter the wall thickness of the exiting parison (22). In order to provide a multiple adjustability of the extruded tube cross section, the invention provides that the extrusion head comprises at least three separate nozzle/mandrel gap adjustment elements (D 0=mandrel, DS I, DS II, DS III) which are differently profiled and exchangeable. The elements can be individually and/or simultaneously brought into working contact with the exiting parison (22) in the mandrel gap (20) from inside and/or outside, whereby at least two of the adjustment elements (D 0=mandrel, DS I, DS II, DS III) are configured such that they can be adjusted.Type: GrantFiled: September 5, 2000Date of Patent: August 10, 2004Assignee: Mauser-Werke GmbHInventors: Dietmar Przytulla, Peter Langos
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Patent number: 6769899Abstract: An adjustable extrusion die shapes a melt into a non-circular cross-sectional profile form. The wall thickness of the profile is adjustable by moving two adjustment plates orthogonal to each other and transverse to the flow of the melt. Movement of each adjustment plate is restricted to prevent rotation relative to a melt-shaping bushing.Type: GrantFiled: July 24, 2001Date of Patent: August 3, 2004Assignee: American Maplan CorporationInventors: Hans Groeblacher, James W. Nixon
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Patent number: 6755638Abstract: A molding machine for producing a continuous extrusion molding product with varying profile includes a die with an inlet for receiving molten material, a channel, an outlet, and shaping knives rotatable around axes non-parallel to the flow direction of the molten material between first and second operational positions. Shaping knives have molding surfaces and together define a first contour in the outlet when the shaping knives are in their first operational positions, and define a second contour in the outlet when the shaping knives are in their second operational positions. Shaping knives can be rotated around axes perpendicular or oblique to the flow direction of molten material.Type: GrantFiled: December 5, 2001Date of Patent: June 29, 2004Assignee: Professionals Auto Parts International Co., Ltd.Inventors: Chun-Chin Chen, Chung-Hsien Wu, Ting-Goang Liang, Hsi-Hsin Shih
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Patent number: 6733268Abstract: In a dividing apparatus A in which dough brought in through a hopper is extruded from an extruder 8 by a screw 71, dough is divided by cutting it into pieces of set length. The dividing apparatus A comprises a support plate provided for installation therein of a outlet member 1 of the extruder 8 and a cutter 9 for cutting off extruded dough D by sliding along the support plate 2. The outlet member 1 comprises a reducer 11 and a flange 12 formed such as to extend therefrom. The flange 12 is configured for ease of installation on, and removal from, the support plate 2.Type: GrantFiled: September 28, 2001Date of Patent: May 11, 2004Assignee: Oshikiri Machinery Ltd.Inventors: Yuzuru Oki, Hiroshi Noda
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Patent number: 6729867Abstract: A strip casting device (2) has a casting container (14) from which through a casting gap (15) two different masses (12, 13) of a material flowable with the addition of heat are poured out as a strip (3) onto a cooling device (4). The second mass (13) is at the same time ejected by way of injection nozzles (21, 22) into the region of the casting gap (15) into the casting flow of the first mass (12). The injection nozzles are preferably movable in various directions.Type: GrantFiled: April 26, 2001Date of Patent: May 4, 2004Assignee: Swiss Caps Rechte und Lizenzen AGInventors: Alois Peter, Andreas Egli
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Patent number: 6709255Abstract: In order to manufacture coiled baking articles with at least one outer dough material (58) and with at least one inner dough material (56) or dough filling, a nozzle arrangement (10) comprises an inner stationary nozzle (14) and an outer nozzle (18) rotatably enclosing the inner nozzle (14). A mouth (20) of the outer nozzle (18) is arranged behind the mouth (16) of the inner nozzle (14) in the direction of flow in such a manner that the materials flow together at the mouth (16) of the inner nozzle (14) and on the path to the mouth (20) of the outer nozzle (18) the inner material (56) is set in rotation by the outer material (58) and is thereby compressed.Type: GrantFiled: January 29, 2002Date of Patent: March 23, 2004Assignee: Hosokawa Bepex GmbHInventors: Holger Kappes, Günther Fux, Frank Altvater
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Publication number: 20040026817Abstract: A die for producing flat sections, in particular a flat-sheet die for extrusion of ceramic green films, has a slot-shaped die outlet which opens in an outlet orifice. The height of the slot-shaped die outlet narrows beginning in the immediate vicinity of the outlet orifice and continuing to the outlet orifice. The die outlet is preferably formed by a first lip and a second lip situated opposite the first, having a constant first distance in at least some areas outside the immediate vicinity of the outlet orifice, and having at the outlet orifice a second smaller distance in comparison with the first distance, the first distance between the lips decreasing linearly to the second distance in the area of the immediate vicinity of the outlet orifice.Type: ApplicationFiled: June 9, 2003Publication date: February 12, 2004Inventors: Martin Pyczak, Bettina Schmidt, Jochen Gaenzle, Ulrich Eisele, Martin Schubert
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Patent number: 6669458Abstract: The invention relates to an extrusion die assembly having a balanced flow path in which the die and tip modules cooperate to form an extended exit channel which communicates with an extrusion channel. The die is rotatably mounted on the die holder and the tip module is rotatably mounted within the axial bore. Each of the rotatably mounted components is independently driven by a motor. The motors are controlled to provide an infinite variation in relative rotational motion between the rotating components.Type: GrantFiled: February 15, 2002Date of Patent: December 30, 2003Assignee: Guill Tool & Engineering Co., Inc.Inventors: Arthur Roger Guillemette, Richard Roy Guillemette
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Patent number: 6663378Abstract: Apparatus and a method for extruding a honeycomb, providing correction in bowing of the extruded honeycomb structure, employs a deflector device having a base plate including an aperture aligned in a direction parallel to the extrusion axis through which the plastic material is conveyed to the die, the aperture having a varying diameter; and, a slide plate movably mounted to the base plate, the deflector device positioned upstream of the extrusion die, the degree of bow reduction depending on the diameter or width of the aperture imparting a pressure drop gradient on the flow stream entering the die.Type: GrantFiled: September 27, 2001Date of Patent: December 16, 2003Assignee: Corning IncorporatedInventors: Eugene C. Grover, Robert B. Lubberts, Richard D. Putt
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Patent number: 6663375Abstract: An extrusion apparatus includes first and second die body portions each having a main body and a lip interconnected with the main body wherein the die body portions are joined such that a die outlet is formed between the lips. The apparatus also includes at least one pivoting link coupled to one of the lips and a sliding member coupled to the pivoting link whereby movement of the sliding member causes the pivoting link to pivot and move the one lip relative to the other lip.Type: GrantFiled: June 19, 2000Date of Patent: December 16, 2003Assignee: Extrusion Dies, Inc.Inventor: John A. Ulcej
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Patent number: 6644952Abstract: The invention relates to a rotating nozzle structure of an extruder which comprises a rotatable nozzle, a die, which rests against the extruder frame and which comprises an annular front surface on the nozzle side, and a sealing plate, which is arranged between the front surface of the die and the nozzle and pressed tightly against the sealing surface of the nozzle to seal the nozzle with respect to the die. According to the invention, the die is arranged to slide in the axial direction with respect to the extruder frame and comprises a flow channel, which is under pressure of the material to be extruded and tapers conically towards the nozzle, and that the ratio of the area (Atiiv) of the die's annular front surface to the area (Aproj) of the projection surface of the flow channel's conical section is between 0.1 and 10.Type: GrantFiled: January 7, 2002Date of Patent: November 11, 2003Assignee: Nextrom Holding S.A.Inventors: Tommi Vainio, Jukka Hillberg, Mikko Kostiainen
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Publication number: 20030206990Abstract: A process for the production of a shaped article of a consumable product in which a composition is extruded through a die comprising at least one orifice characterised in that the cross-sectional area for flow through the said at least one orifice is varied in a continuous fashion during at least part of the time said extrusion is occurring, whereby an extrudate is obtained whose cross-sectional area varies along at least a part of its length. Apparatus suitable for carrying out the process are also described.Type: ApplicationFiled: June 3, 2003Publication date: November 6, 2003Applicant: Unilever Home & Personal Care USA, Division of Conopco, Inc.Inventors: Brian Edmondson, Graeme Neil Irving
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Publication number: 20030203067Abstract: A die module is constructed for an extrusion die which provides for the adjustment of the concentricity of the exit configuration by allowing relative movement of the die within the extrusion die assembly. The die is mounted on a die holder through a pair of mounting rings which fit into a recess in the die body. The rings are constructed with interface surfaces having a curvature with a center upstream. The interface surfaces form a seat within which the die holder is contained with mating surfaces engaging the interface surfaces to allow pivot motion about the center of curvature of the interface surfaces. The engaging surfaces are in the shape of a partial hemisphere to simulate a universal motion. Adjustment bolts are located in the extrusion die assembly downstream of the interface. Bolts, which secure the rings to the die holder, are constructed to provide a fixed spatial relation of the engaging surfaces.Type: ApplicationFiled: May 22, 2003Publication date: October 30, 2003Inventors: Glen Albert Guillemette, James Prue
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Patent number: 6626206Abstract: A feedblock for supplying a multi-layer stream of polymeric material to an extrusion die is provided wherein the dimension of at least some of the layers of the multi-layer stream can be precisely adjusted and/or controlled. The feedblock includes a primary flow path which is used to create a first layer and two secondary flow paths which are used to create a set of second and third layers. The secondary flow paths are positioned relative to the primary flow path such that the second and third layers are deposited on opposing sides of the primary layer in a sandwich-like configuration. Each of the secondary flow paths include a contoured slot through which a secondary fluid stream of polymeric material is deposited onto a primary stream of polymeric fluid flowing in the primary flow path. The contoured slot is geometrically shaped such that adjusting the position of the contoured slot alters the shape of the secondary fluid stream as it is deposited onto the primary flow path.Type: GrantFiled: January 20, 2000Date of Patent: September 30, 2003Assignee: Extrusion Dies, Inc.Inventors: John A. Ulcei, Dale P. Pitsch
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Patent number: 6612829Abstract: An extrusion die having a first die element and a second die element, each of which has a die lip, between which an extrusion gap with a slot-shaped outlet opening extends over a width of the extrusion die. At least one die element has an adjusting device by which the die lip can be adjusted in relation to the die lip of the other die element while changing the width of the outlet opening. The adjusting device has an adjusting bar arranged in a receiving groove of the die element and displaceable in the width extension thereof in a displacement device.Type: GrantFiled: November 26, 2001Date of Patent: September 2, 2003Assignee: Reifenhäuser GmbH & Co. MaschinenfabrikInventor: Anton Rübhausen
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Patent number: 6610231Abstract: The molding method for molded surface fastener for molding a flat substrate and a plurality of first engaging elements integrally and continously using the same molding material. According to the method, a cooling/transportation means for cooling and transporting a molded surface fastener at the same time when it is molded is driven and rotated in one direction and molten resin material is extruded continuously onto a cooling/transportation face through a resin extrusion path which extends in a width direction of an extrusion nozzle and which is open to said cooling/transportation face of said cooling/transportation means and opens in a transportation direction thereof. At this time, a plurality of the first engaging-element-molding openings spaced in the width direction of said resin extrusion path are opened and closed by means of at least a vertically vibrating member disposed on a front face of said extrusion nozzle in a resin transportation direction thereof.Type: GrantFiled: September 24, 2001Date of Patent: August 26, 2003Assignee: YKK CorporationInventors: Toshiaki Takizawa, Ryuichi Murasaki
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Patent number: 6602066Abstract: A toy includes a chamber having a longitudinal axis, a hollow interior, a first opening, and a second opening. The toy includes a die coupled to the first opening of the chamber, and an extruder received at the second opening of the chamber. A cavity is defined and bound by the interior of the chamber, the first opening, and the extruder. The extruder is positioned to advance longitudinally through the chamber relative to the die. Rotation of the extruder causes the chamber and formable compound received within the cavity to rotate relative to the die, and advancement of the extruder forces the rotating formable compound through the die.Type: GrantFiled: January 8, 2001Date of Patent: August 5, 2003Assignee: Hasbro, Inc.Inventor: Richard John Heayes