Die Configuration (other Than Fixed Orifice Shape) Patents (Class 264/177.16)
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Patent number: 11154820Abstract: The present invention relates to a continuous process for preparing permselective hollow fiber membranes being suitable e.g. for hemodialysis, hemodiafiltration and hemofiltration of blood which comprises a two-stage drying and tempering treatment of the hollow fiber membranes. According to a further aspect, the invention relates to a continuous process for drying permselective hollow fiber membranes on-line. The invention also relates to devices for on-line drying of permselective hollow fiber membranes.Type: GrantFiled: December 21, 2015Date of Patent: October 26, 2021Assignee: GAMBRO LUNDIA ABInventors: Ulrich Bauer, Reinhold Buck, Juergen Graf, Helmut Hildwein, Bernd Krause, Markus Storr, Arnd Wochner
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Patent number: 10434696Abstract: The invention relates to an annular die on an extrusion head for producing tubular or sheet-like preforms with an arcuate die gap and with a melt channel delimited by a mandrel and a die body, the cross-sectional profile of the melt channel being variable by way of adjusting elements, the annular die according to the invention being distinguished by the fact that the outer circumference of the melt channel is at least partially delimited directly by at least one radially adjustable slide, that the slide is formed by a number of segments that can be adjusted together from at least one first position into at least one second position, and that the segments in each position form a respectively closed arc portion of the delimitation of the melt channel, the radius of the arc portion being different according to the position of the segments.Type: GrantFiled: June 21, 2018Date of Patent: October 8, 2019Assignee: KAUTEX TEXTRON GMBH & CO. KGInventors: Joachim Eckhardt, Thomas Froitzheim, David Schenkel
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Patent number: 10315405Abstract: An applicator die for creating undivided ribbons of polymeric film and a method of using the die to apply an emulsified polymeric material in ribbons to a fully or partially finished surface of an automobile body. In one application, the ribbon is applied as a peelable film to an automobile body and in another application, a ribbon is applied to a rocker panel as an anti-chip coating. For both applications, the applicator die has an internal gallery and an outlet slot with flared edge surfaces to emit a laminarized ribbon of polymer-based material at a distance from the target surface where the opposite edges of the ribbon have become essentially parallel.Type: GrantFiled: November 11, 2016Date of Patent: June 11, 2019Assignee: EXEL INDUSTRIESInventors: Michael DeFillipi, Vipin Patel
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Patent number: 9893442Abstract: The present invention relates to an actuator that has a specific structure, and is molded from a resin composition, in which the resin composition contains a liquid crystal polyester having a specific repeating unit and a filling material, an amount of the repeating unit including a 2,6-naphthylene group is 40 mol % or more with respect to a total number of moles of all repeating units configuring the liquid crystal polyester, and an amount of the filling material is less than 55 parts by mass with respect to 100 parts by mass of the total amount of the liquid crystal polyester and the filling material.Type: GrantFiled: May 24, 2017Date of Patent: February 13, 2018Assignee: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Tomoyuki Hara, Yasuyuki Fujita
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Patent number: 9550327Abstract: A liquefier assembly for use in an extrusion-based additive manufacturing system, the liquefier assembly comprising a downstream portion having a first average inner cross-sectional area, and an upstream having a second average inner cross-sectional area that is less than the first inner cross-sectional area, the upstream portion defining a shoulder configured to restrict movement of a melt meniscus of a consumable material.Type: GrantFiled: April 20, 2015Date of Patent: January 24, 2017Assignee: Stratasys, Inc.Inventors: William J. Swanson, Kevin C. Johnson, Timothy A. Hjelsand, J. Samuel Batchelder
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Patent number: 8956559Abstract: According to a fabrication method, an extruded tubular member HA is formed, using an extrusion die 23 which has an extrusion orifice 25 having an opening-side inner circumferential surface 25a having a circular section and a core-side die 26 disposed concentrically with the extrusion orifice 25, by extruding a tube material through an extrusion passage 27 defined between the opening-side inner circumferential surface 25 and a core-side outer circumferential surface 26d of the core-side die 26. As this occurs, a bent configuration is given to the extruded tubular member HA by changing contact areas where the tube material contacts the opening-side inner circumferential surface 25a and the core-side outer circumferential surface 26d in a circumferential direction so as to set velocities at which the tube material is extruded to different values in the circumferential direction by controlling the position of the core die 26 in rotating and axial directions relative to the extrusion orifice 25.Type: GrantFiled: October 25, 2010Date of Patent: February 17, 2015Assignee: Toyoda Gosei Co., Ltd.Inventors: Yoji Kimura, Kyohei Sato, Hiroshi Yamaguchi, Yukio Miura
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Publication number: 20150042047Abstract: An elastic seal for a building joint which includes internal walls or dividers which change orientation when the seal is compressed for placement into the building joint. The change in orientation allow for the seal to apply a relatively uniform force against the joint walls extending from the bottom wall to the top wall of the seal. Additionally, the change in orientation reduces the deflection of the top wall of the seal upwardly when compressed in the building joint. The walls also become more vertically oriented when the seal in compressed. This vertical orientation provides increased load support for the top wall when the seal is compressed into a joint.Type: ApplicationFiled: August 6, 2013Publication date: February 12, 2015Applicant: InPro CorporationInventors: John A. Winslow, G. Matthew Fisher, David R. Gebhardt
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Publication number: 20150021811Abstract: The invention relates to an annular die (1) on an extrusion head for producing tubular or sheet-like preforms with an arcuate die gap and with a melt channel (4) delimited by a mandrel (2) and a die body (3), the cross-sectional profile of the melt channel (4) being variable by way of adjusting elements, the annular die according to the invention being distinguished by the fact that the outer circumference of the melt channel (4) is at least partially delimited directly by at least one radially adjustable slide (5), that the slide (5) is formed by a number of segments that can be adjusted together from at least one first position into at least one second position, and that the segments in each position form a respectively closed arc portion of the delimitation of the melt channel (4), the radius of the arc portion being different according to the position of the segments.Type: ApplicationFiled: February 16, 2013Publication date: January 22, 2015Inventors: Joachim Eckhardt, Thomas Froitzheim, David Schenkel
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Patent number: 8900499Abstract: The invention relates to a method and to a device for producing endless strands, particularly plastic strands having structure in the longitudinal axis. According to the invention, form elements (14, 15) bounding a form cavity (4) are brought together and aligned with each other in rows for making a form cavity (4), the form cavity (4) is moved in the longitudinal axis of the rows and casting material is brought into the form cavity (4) at a gate location running against the direction of motion through a side opening (5) of the form cavity (4), and the form cavity is opened continuously at a distance from the gate location while moving the form elements apart, in order to demold an endless strand solidified in the form cavity (4).Type: GrantFiled: October 16, 2009Date of Patent: December 2, 2014Assignee: SaarGummi Technologies S.a.r.l.Inventors: Frank Berkemeier, Jorg Leiffels
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Patent number: 8834760Abstract: Described herein are extrusion processes to produce hollow pellets. Also disclosed are pelletizer devices that can be used to produce the hollow pellets. The processes and devices make use of an extrusion die having a die orifice and an insert that is placed in the die orifice to produce the hollow pellets.Type: GrantFiled: May 15, 2009Date of Patent: September 16, 2014Assignee: Gala Industries, Inc.Inventors: J. Wayne Martin, Roger Blake Wright
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Publication number: 20140106128Abstract: The present disclosure is related to a die suitable for extrusion of thermoplastic vulcanizate, in particular for co-extrusion of multiple materials comprising a thermoplastic vulcanizate. The die comprises a pool die plate, an orifice die plate, and a profile die plate. By utilizing the die according to the present disclosure in extrusion, the flow of extrudate can be well controlled and balanced due to the design of flow pool and through orifice, thereby an extruded article achieves good shape performance, for example, good surface smoothness, and an undesired effect like edge tear, warpage, die moustache, silver line in the extrusion can be avoided.Type: ApplicationFiled: April 15, 2011Publication date: April 17, 2014Applicant: ExxonMobil Asia Pacific Research & Development Co. Ltd.Inventors: Toshiaki Yamaguchi, Liang Li, Xing Fan
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Patent number: 8641946Abstract: 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.Type: GrantFiled: December 10, 2004Date of Patent: February 4, 2014Assignee: Cambridge Enterprise LimitedInventors: Malcolm R. Mackley, Bart Hallmark
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Patent number: 8641944Abstract: A synthetic wicker yarn capable of simulating a rolled leaf style, while being adapted to facilitate weaving. The yarn has an extruded, elongated body fabricated from a blend of a plurality of foamed polymers. The body has a surface of a first color, an x-axis and y-axis along a cross-sectional portion of the elongated body, and a longitudinal z-axis along its length. The x-axis has a first effective diameter and the y-axis has a second effective diameter. The body includes at least two rounded, foamed polymer folds, which project transversely from the x-axis and run longitudinally along a portion of the body. These folds simulate the margins of a leaf wrapped into a roll. Between the folds is a substantially concave crease within the surface of the body, also oriented longitudinally. The effective diameters are configured to form a substantially elliptical cross section that is easy to weave.Type: GrantFiled: December 23, 2009Date of Patent: February 4, 2014Inventors: Oliver Wang, Wu Hsiu Tien
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Patent number: 8523551Abstract: An unvulcanized rubber extruder that realizes extrusion forming of an unvulcanized rubber extrudate ensuring manufacturing of a high-quality tire without any increase of tire manufacturing steps. In the vicinity of left side end portion, in the drawing, of unvulcanized rubber (A) (rubber chafer part), unvulcanized rubber (B) flows along parallel wall (56) on the downside of main rubber flow channel (34) and flows along second inclined surface (38) on the upside of the main rubber flow channel (34). Simultaneously, apart from the main flow of the unvulcanized rubber (B), portion of the unvulcanized rubber (B) is extruded out in the direction perpendicular to auxiliary rubber flow channel (44) (arrow B direction). Accordingly, in the left side end portion, in the drawing, of unvulcanized rubber (A) (rubber chafer part), it appears that the upside and downside are shut in by the flow of the unvulcanized rubber (B).Type: GrantFiled: March 26, 2008Date of Patent: September 3, 2013Assignee: Bridgestone CorporationInventors: Norimi Ashimoto, Takeshi Masuda
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Patent number: 8425821Abstract: A spin pack assembly for use in melt spinning elastic fibers. The spin pack assembly includes a circular breaker plate having a center aperture and several circular patterns of apertures with each circular pattern having a plurality of apertures. Each circular pattern is located concentrically about an axis of the center aperture. The apertures in the outer circular patterns have a greater diameter than the apertures in the inner circular patterns. The spin pack assembly also has a spinneret plate where the exit aperture of the spinneret plate is recessed in the body of the spin pack assembly.Type: GrantFiled: September 17, 2010Date of Patent: April 23, 2013Assignee: Lubrizol Advanced Materials, Inc.Inventors: Ravi R. Vedula, James E. Bryson, Jr.
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Patent number: 8398908Abstract: A method for the production of a plastics pipe (9) comprising an inner core and an outer removable skin bonded thereto, which method comprises co-extruding molten polymeric materials forming the inner core and the outer removable skin layer from one or more extruder dies, bringing the polymeric materials together and allowing them to solidify, and conditioning the solidified polymeric materials at a temperature and for a time sufficient to influence the adhesion of the outer skin layer to the inner core, such that on cooling the adhesion of the outer skin layer to the inner core is sufficient to prevent substantial undesired relative movement between the skin layer and the core during installation of the pipe (9), but insufficient to prevent the outer skin layer from being clearly removed by peeling, at least at the ends of the pipe (9), and insufficient to cause a substantial reduction in the impact strength of the inner core.Type: GrantFiled: December 23, 2005Date of Patent: March 19, 2013Assignee: Radius Systems LimitedInventor: Lawrence Richards
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Patent number: 8323545Abstract: A co-extrusion process for making decorative moldings having a simulated wood appearance and a given profile includes mixing a base material and color particles to form a mixture, the base material having a rigid polymer and the color particles having a different color from the base material and a higher melt temperature than the base material. The mixture is heated and displaced using a feed screw such that the color particles move helically along the trajectory of the feed screw while avoiding backflow and melting to create corresponding helical vein segments within the base material. The mixture is forced through a tubular channel while controlling heat and shear conditions such that the helical vein segments remain substantially intact.Type: GrantFiled: March 15, 2010Date of Patent: December 4, 2012Assignee: Plastibec Inc.Inventors: Angelo Sudano, Benoit Meloche
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Patent number: 8273276Abstract: A roller die preformer for use in an extrusion system to form wide extruded components, such as a rubber tire tread, on a surface of a roller. The roller die preformer includes a flow inlet, a flow outlet and a laterally expanding flow channel extending from the flow inlet to the flow outlet. A flow restrictor is configured within the flow channel to urge the flow of material toward the lateral extremities of the flow channel to thereby form an extruded component at the flow outlet having a lateral width which is greater than the lateral width of the flow inlet of the preformer.Type: GrantFiled: November 12, 2004Date of Patent: September 25, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Ernest Wilford Looman, Jr., Bruce Joseph Turner
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Publication number: 20120235319Abstract: A method for generating interfacial surfaces within a first composite stream having a generally planar layer interface lies generally in an x-z plane of an x-y-z coordinate system. The method includes dividing the first composite stream into a plurality of branch streams along the x-axis such that the pair of discrete overlapping layers and the generally planar layer interface are distributed among at least two branch streams. Within each individual branch stream of the at least two branch streams, the width dimension of the branch stream is expanded along the x-axis and the thickness dimension of the branch stream is simultaneously contracted along the y-axis. The branch streams are recombined in an overlapping relationship, after each of the at least two branch streams is simultaneously expanded and contracted, to form a second composite stream having a greater number of discrete overlapping layers of polymeric material than the first composite stream.Type: ApplicationFiled: March 19, 2012Publication date: September 20, 2012Inventors: Joao Maia, Jorge Silva, Patrick Harris
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Patent number: 8216700Abstract: Disclosed herein are a hard coating film, a material coated with the hard coating film, and a die for cold plastic working, the coating film excelling conventional surface coating layers in wear resistance as well as slidability with a low frictional coefficient. The hard coating film is characterized by a chemical composition of (VxM1-x) (BaCbN1-a-b), where 0.4?x?0.95??(1A) 0?a?0.2??(2A) 0?1-a-b?0.35??(3A) 0.6?b?1??(4A) M denotes at least one species of elements belonging to Groups 4a, 5a, and 6a and Si and Al; and x, 1-x, a, b, and 1-a-b represent respectively the atomic ratio of V, M, B, C, and N.Type: GrantFiled: July 7, 2008Date of Patent: July 10, 2012Assignee: Kobe Steel, Ltd.Inventor: Kenji Yamamoto
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Patent number: 8211343Abstract: The invention relates to the extrusion of tire components with a large change of gauge across their cross-sectional area. It is provided a method and an assembly for extruding such a tire component with an extruder feeding a flow channel with a downstream die opening, whereby a deflector is provided in the flow channel upstream the die opening such that a flow of rubber is slowed down in front of broad portions of the cross-sectional area of the downstream die, avoiding distortion or bending of the extruded tire component.Type: GrantFiled: June 28, 2011Date of Patent: July 3, 2012Assignee: The Goodyear Tire & Rubber CompanyInventors: Jean Luc Dheur, Erich Nicolaus Lemaire, Michel Meunier
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Publication number: 20110304070Abstract: Spiral distributors for plastic melt are often used for manufacturing foils in blown film extrusion lines. They overlie several partial flows of melt on their way to the ring-shaped outlet nozzle. The spiral distributors are designed either as cylindrical or truncated cone-shaped axial spiral distributors or as plate-shaped radial spiral distributors. In an axial spiral distributor several spiral channels are disposed as a multiple screw. In the case of a radial spiral distributor, several spiral channels are disposed as multiple spirals. The invention proposes to provide the spiral channels with shortening sections in their backward area. As compared to a geometrical rule for a discontinuation of the spiral channels which is valid in a prior section of the spiral channels, this leads to a faster discontinuation of the spiral channels. The invention has observed that the design of the backward area of the spiral channels does not affect the good overlaying effect of the front part of the spiral channels.Type: ApplicationFiled: May 23, 2011Publication date: December 15, 2011Applicant: Reifenhaeuser GmbH & Co. KG MaschinenfabrikInventor: Jochen Hennes
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Patent number: 8021597Abstract: The invention relates to a method and a device for the production of blow-molded two- or multi-layer containers made of thermoplastic, and a plastic container produced accordingly, having view strips, particularly for storage and for transport of contents. To this end, molten plastic material is deflected in an extrusion head (10) from the inner, natural-colored layer (34) of the tubular preform (18) into the outer layer (36) in a process technical step, and incorporated there, whereby a view strip (24) is formed in the colored outer plastic layer (36).Type: GrantFiled: September 5, 2008Date of Patent: September 20, 2011Assignee: Mauser-Werke GmbHInventors: Jan Peter Jacobs, Stefan Keusch
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Patent number: 7955540Abstract: A method of forming a thermoplastic vulcanizate by first providing a melt-blender having a die through which melt-blended thermoplastic vulcanizate passes to form a shaped article; wherein the die comprises a flow design having at least one flow branch having a taper angle and a flow reservoir at the end of each flow branch; and wherein the taper angle of the flow design ranges from 5 to 20 degrees; followed by melt-blending a thermoplastic and an elastomer with an organic peroxide curative in the melt-blender to form a thermoplastic vulcanizate; and finally, passing the melt-blended thermoplastic vulcanizate through the flow design to form the shaped article.Type: GrantFiled: January 19, 2007Date of Patent: June 7, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Felix M. Zacarias, Rachna Mohan, John Bowers
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Patent number: 7914724Abstract: Disclosed is a method and apparatus for forming a circumferential skin surrounding a central cellular structure of an extruded honeycomb article. The method and apparatus may be used to produce defect-free skins and/or skins having large thickness and a high degree of particle alignment thereby preferably exhibiting CTE comparable to the extruded webs. These benefits are achieved by providing a die and method wherein a flow, Q, exiting any two active ones of a plurality of peripheral slots forming the skin is substantially equal. Also disclosed is a thick-skinned ceramic article having a thick extruded skin (ts?>5 tw?) with an I-value comparable to the webs.Type: GrantFiled: July 28, 2006Date of Patent: March 29, 2011Assignee: Corning IncorporatedInventors: Dana Craig Bookbinder, Thomas William Brew, Frank Fabian, Darin Wayne Felty, Robert Bernard Lubberts, David Lewin Poff, Kenneth Charles Sariego, Andrew Joseph Sullivan, David Robertson Treacy, Jr.
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Publication number: 20100331571Abstract: An object of the present invention is to provide a molding and a method for producing the same; a catalyst for the production of an unsaturated aldehyde and an unsaturated carboxylic acid, and a method for producing the same; and a catalyst for the production of methacrylic acid, and a method for producing the same. The molding of the present invention shows a shape including a plurality of columnar portions disposed with a predetermined gap; and bridge portions which are provided at both ends in longitudinal directions of two adjacent columnar portions and join adjacent columnar portions each other; and including through holes surrounded by a plurality of columnar portions in the longitudinal directions of the columnar portions, and openings formed on a peripheral surface by a gap between the plurality of adjacent columnar portions.Type: ApplicationFiled: June 24, 2010Publication date: December 30, 2010Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Hirofumi Saito, Yuya Takahashi, Toyohisa Hoshikawa, Kazuya Tsuchimoto, Osamu Yamanishi
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Patent number: 7858008Abstract: A profile-extruded article is disclosed, made of a fiber-reinforced polymer of vinyl-chloride monomer, wherein the article has a ratio of actual specific gravity to theoretical specific gravity of nearly unity. A method of making the article is also disclosed.Type: GrantFiled: February 22, 2007Date of Patent: December 28, 2010Assignee: PolyOne CorporationInventors: Sang H. Lee, Robert B. Hooks
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Publication number: 20100289173Abstract: The invention relates to the extrusion of tire components with a large change of gauge across their cross-sectional area. It is provided a method and an assembly for extruding such a tire component with an extruder feeding a flow channel with a downstream die opening, whereby a deflector is provided in the flow channel upstream the die opening such that a flow of rubber is slowed down in front of broad portions of the cross-sectional area of the downstream die, avoiding distortion or bending of the extruded tire component.Type: ApplicationFiled: May 14, 2009Publication date: November 18, 2010Applicant: The Goodyear Tire & Rubber CompanyInventors: Jean Luc Dheur, Erich Nicolaus Lemaire, Michel Meunier
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Patent number: 7700019Abstract: 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.Type: GrantFiled: December 2, 2003Date of Patent: April 20, 2010Assignee: Bathium Canada Inc.Inventors: Paul-André Lavoie, Richard Laliberté, Jonathan Dubé, Yvon Gagnon
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Patent number: 7678316Abstract: A method that includes coextruding two or more thermoplastic resin streams through a profiled die plate, which die plate is shaped to form a nonplanar film (three dimensional) preferably with a regularly oscillating peak and valley structure that oscillates from a top surface to a bottom surface forming longitudinally extending ridges on both faces of the film. The film is formed by coextruding the film through the oscillating die plate opening causing partitioning of the resins in different zones in the width direction of the film. Flattening of the film results in a film with side-by-side zones formed of different polymers or relative proportions of polymers.Type: GrantFiled: June 8, 2004Date of Patent: March 16, 2010Assignee: 3M Innovative Properties CompanyInventors: Ronald W. Ausen, Janet A. Venne, Jayshree Seth
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Patent number: 7674412Abstract: 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.Type: GrantFiled: December 2, 2003Date of Patent: March 9, 2010Assignee: FUJIFILM CorporationInventors: Tadahiro Kegasawa, Ryuichi Katsumoto, Masanori Takase
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Patent number: 7628945Abstract: Extruding radiused plastic articles with an extruding machine terminating in die defining a path of travel between upstream and downstream ends. The die has an outlet opening extending longitudinally in the direction of the path of travel, the opening oriented so a polymeric material is extruded therefrom in a direction approximately perpendicular to the path of travel through the die. Oppositely rotating rollers of tapered diameters are disposed side by side to receive the extrudate therebetween, the rollers arranged so their longitudinal axes intersect and their smaller diameters are oriented towards the downstream end of the die. Extrudate passing through the opening is characterized by a higher flow rate proximate the upstream end thereof to thereby form a radiused extrusion. The rollers draw the extrudate from the die outlet opening without significantly altering the radiused shape of the fluid plastic material.Type: GrantFiled: February 17, 2006Date of Patent: December 8, 2009Inventor: Larry P. Collins
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Patent number: 7618571Abstract: An extrusion head (1) for blow moulding of hollow bodies comprises: a body (2) and a force plug (3) set within the body so as to define a cylindrical gap (4), through which the molten plastic material fed by an extruder can flow; a die opening (6) set at the bottom end of the body (2); a bottom part (30) of the force plug (3), set within the die opening (6) so as to define an annular gap (10) communicating with the cylindrical gap (4) for exit of the tubular parison; and a plunger (20) supporting at the bottom an ovalizing insert (40), slidably mounted within a chamber (32) formed in the bottom part (30) of the force plug. The plunger can pass from a retracted, resting, position, in which the bottom edge (48) of the ovalizing insert is located within the chamber (32), to an extracted, working, position, in which the bottom edge (48) of the ovalizing insert projects at the bottom with respect to the bottom edge (38) of the bottom part of the force plug.Type: GrantFiled: May 17, 2006Date of Patent: November 17, 2009Assignee: Uniloy Milacron S.r.l.Inventors: Gianluca Bertolotti, Mauro Riccio, Mauro Minola
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Patent number: 7615175Abstract: 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: August 3, 2004Date of Patent: November 10, 2009Assignee: 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: 20090252940Abstract: An optical waveguide film is provided having a cross-sectional structure wherein claddings composed of a thermoplastic resin B and dispersions (cores) composed of a thermoplastic resin A extend in the machine direction of the film and are arrayed in the transverse direction of the film, the optical waveguide film comprising not less than 3 cores, diameters (We1, We2) of cores located at the both ends in the transverse direction of the film and diameter (Wc) of a core in the central portion in the transverse direction of the film satisfying the following Formulae (1) and (2), the optical waveguide film comprising a continuous cladding layer at least one side thereof, the thicknesses of the cladding layers (Te1, Te2) at the both ends thereof in the transverse direction of the film and the thickness (Tc) of the cladding layer in the central portion in the transverse direction of the film satisfying the following Formulae (3) and (4): 0.8?We1/Wc?1.2??Formula (1) 0.8?We2/Wc?1.2??Formula (2) 0.8?Te1/Tc?1.Type: ApplicationFiled: September 12, 2007Publication date: October 8, 2009Applicant: Toray Industries, Inc.Inventors: Wataru Gouda, Shunichi Osada, Masatoshi Oyama
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Publication number: 20090220785Abstract: A die and method for extruding an extrudable material to form an extruded member is described. In one embodiment, the die comprises a barrier member comprising a plurality of feed channels that extend through the barrier member. Furthermore, the die incorporates a passage forming member extending from the barrier member substantially in the direction of extrusion. The feed channels are arranged with respect to the passage forming member to allow the extrudable material to substantially flow about the passage forming member to form a corresponding passage in the extruded member.Type: ApplicationFiled: October 12, 2006Publication date: September 3, 2009Applicant: ADELAIDE RESEARCH & INNOVATION PTY LTDInventors: Tanya Monro, Heike Ebendorff-Heidepriem, Philip Davies
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Publication number: 20090206510Abstract: 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.Type: ApplicationFiled: April 10, 2006Publication date: August 20, 2009Inventor: Ole-Bendt Rasmussen
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Publication number: 20090162585Abstract: The present invention provides a method of manufacturing a flexible tube. The method includes the steps of providing a source of material to be extruded and forming a tubular member with an extrusion die. The extrusion die includes a radially and outwardly extending tooth configured to define a protrusion upon the outer surface of the tubular member. The method further includes the step of rotating the tubular member after exiting the extrusion die such that the protrusion forms a helical profile along the length of the tubular member.Type: ApplicationFiled: December 17, 2008Publication date: June 25, 2009Applicants: Cook Incorporated, Sabin CorporationInventors: Jeffry S. Melsheimer, David A. Drewes, JR.
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Publication number: 20090152759Abstract: A solid state drawing die having a body with opposing entrance and exit ends, a shaping channel providing fluid communication entirely through the body from the entrance to exit end and having a converging profile, and at least one portion of the body that serves as a static protrusion extending into the but not all the way across the shaping channel is useful in a solid state drawing process for preparing oriented polymer compositions having indented or grooved profiles.Type: ApplicationFiled: December 3, 2008Publication date: June 18, 2009Inventors: Bruce A. Malone, Gregory T. Stewart, Brett M. Birchmeier, Timothy O. Kirch
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Publication number: 20090145065Abstract: The present invention discloses an extruder for producing a thermoplastic material having a first and second portion comprising an axially extending barrel and a screw conveyer axially disposed within said barrel so as to define a passage for conveying thermoplastic material from an input through a melt zone to an output. Furthermore the present invention discloses an insulation member comprising an elongated insulation member formed of a thermoplastic insulating material, said insulating member having a top edge, a bottom edge, and first and second side edges; the top edge comprising a protrusion, said top edge extending beyond a corresponding top edge of a corresponding panel of siding; and the bottom edge comprising a ledge, said ledge operable to overlap the protrusion.Type: ApplicationFiled: November 4, 2008Publication date: June 11, 2009Applicant: Industrial Thermo Polymers LimitedInventor: Steven David Hartman
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Patent number: 7504056Abstract: An extrusion molding system includes a die having a first opening with a unvariable shape and a second opening with a variable shape, an extruder which feeds resin to the die, and a gear pump arranged between the die and the extruder. An ECU conducts a first sequence control to change the shape of the second opening and a second sequence control to change the rotation speed of the first gear pump in synchronism with a change in the shape of the second opening.Type: GrantFiled: March 26, 2004Date of Patent: March 17, 2009Assignee: Kinugawa Rubber Ind. Co., Ltd.Inventor: Takayuki Kobayashi
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Publication number: 20090051074Abstract: An apparatus and method provide for the extrusion of green brick material around a hole-generating member and the use of a lubrication fluid between the hole-generating member and the green brick material to reduce friction therebetween during extrusion, thus enabling the formation of larger sized holes in the bricks formed thereby.Type: ApplicationFiled: August 22, 2007Publication date: February 26, 2009Applicant: REYMOND PRODUCTS INTERNATIONAL, INC.Inventors: Donald A. Roberts, James J. Zwick
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Publication number: 20080182049Abstract: There is provided a formed article characterized in that it includes a cylindrical coil member having spiral turns with a predetermined pitch thereof and a supporting member which extends along a direction parallel to an axis of the cylindrical coil member and which connects the spiral turns, and also provided a production process of the formed article characterized in that an extruder is used which includes a first die having a groove on its outer peripheral surface and a second die in the form of a ring which has a groove on its inner peripheral surface and into which the first die is fitted, and a forming material is extruded by the extruder while only one of the dies is rotated with respect to the other die.Type: ApplicationFiled: January 24, 2008Publication date: July 31, 2008Applicant: SUMITOMO CHEMICAL COMPANY, LIMITEDInventors: Kazuya Tsuchimoto, Osamu Yamanishi
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Patent number: 7037960Abstract: A woody formed article, characterized as being produced by admixing a woody material W and, as a binding agent, a fibrous and/or ribbon shaped thermoplastic resin R which is easy to be intertwined with the woody material W, and molding the resultant mixture. The thermoplastic resin R is preferably admixed in a state of being heated and melted. A method for producing a woody formed material, characterized in that it comprises providing a mat M of a raw material mixture Mx of a woody material W and a fibrous and/or ribbon-shaped thermoplastic resin R and subjecting the mat M to heat pressing, or comprises, in admixing the woody material W with the above fibrous thermoplastic resin R, stretching and thinning the resin R by means of a hot wind and/or a cold wind pressure, and admixing homogeneously it with the woody material W by utilizing a negative pressure zone due to the hot wind and/or the cold wind, to prepare a mat M of a raw material mixture Mx, and then subjecting the mat M to pressing.Type: GrantFiled: March 7, 2001Date of Patent: May 2, 2006Assignee: Nichiha CorporationInventor: Masanori Ukai
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Patent number: 7001555Abstract: A melt spinning apparatus including a spinpack with a die tip block having a recess with a converging portion, such as an angled trough, which terminates in a row of filament discharge outlets. The recess selectively receives a configuration insert, such as a side-by-side insert or a sheath-core insert, that separates the converging portion of the recess into two sheets of liquid that combine at the filament discharge outlets. The spinpack may be configured by inserting either of the inserts to produce filaments having different cross sectional configurations of two different materials. Separation of the two liquids prevents premature interaction between the two liquid flows which minimizes instabilities between the liquid flow interface. The minimization of these instabilities can result in less formation of shot and improve other significant finished product properties. In addition, each type of liquid material may be maintained at an optimum temperature for proper extrusion.Type: GrantFiled: March 18, 2003Date of Patent: February 21, 2006Assignee: Nordson CorporationInventors: Rachelle Bentley, Steve Clark
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Patent number: 7001547Abstract: A method and apparatus are described for coextruding two materials A and B, in which B is extruded on A through a port (3), in which the separating wall between the flows of A and B is formed as a flap closure (4) adapted to act as a non-return valve for the flow of B into A, and further means are provided for extruding B through the port in pulses. The pulses may be effected by opening and closing the closure, by mechanical transmission means or by the effect of imposing pressure difference on the flap (4) by the flows of A and/or B. The pulsing means preferably involves rams (1). The invention is particularly suitable for extruding a low viscosity material B onto a higher viscosity material A, or for making sheets or pipes with alternating segments of differential flexibility, or for coextruding a flow of solid particles with a flow of liquid.Type: GrantFiled: April 11, 2001Date of Patent: February 21, 2006Inventor: Ole-Bendt Rasmussen
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Patent number: 6932926Abstract: The object of the present invention is to produce plural resin forms at one time with stability by dividing resin starting material continuously in a short time and with the same residence time into plural parts having desired amounts of resin and discharging to solidify them. The producing method is comprising, providing a liquid partition on the die land and/or die lip of a coat hanger shaped die along with the flow direction, introducing starting material for resin into said coat hanger shaped die and dividing it into plural parts and then discharging and solidifying on the adherent.Type: GrantFiled: November 20, 2001Date of Patent: August 23, 2005Assignee: Suneast Research LtdInventor: Noboru Murata
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Patent number: 6921507Abstract: The object of the present invention is to provide a method for manufacturing a product of thermoplastic resin and/or thermoplastic elastomer with materials of high recycle capability, preventing the productivity drop and the cost increase as well as the damage caused by the contact between semi-finished products and a drawing machine. A plurality of semi-finished moles and a drawing element are molded integrally by an extruder. The semi-finished moles are separated from the drawing element by cutting. The semi-finished moles separated from the drawing element are cut in accordance with a given length to produce a mole.Type: GrantFiled: June 19, 2002Date of Patent: July 26, 2005Assignee: Honda Giken Kogyo Kabushiki KaishaInventor: Toshihiko Suenaga
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Patent number: 6821609Abstract: An extrusion die has a distributing tool; a profiling nozzle; and at least three melt-flow ducts; a first melt-flow duct is routed around a second melt-flow duct or the distributing tool using a branch and is merged again downstream from the branch; and a third melt-flow duct opens into the second melt-flow duct. The extrusion die is suitable for extrusion of a hollow-chamber profiled panel of a thermoplastic plastic with a layered structure which comprises a top and bottom layer of a first plastic melt; and an intermediate layer of a second plastic melt disposed in an interior of a hollow chamber profile. The first plastic melt is allocated to the first melt-flow duct and to the second melt-flow duct and the second plastic melt is allocated to the third melt-flow duct. During the extrusion the second plastic melt is deposited onto the first plastic melt upstream from or in the region of the branch, and a distribution of the deposited second plastic melt is regulated using the distributing tool.Type: GrantFiled: May 24, 2002Date of Patent: November 23, 2004Assignee: Roehm GmbH & Co., KGInventors: Volker Mende, Wolfgang Scharnke
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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