Means Casting Fluent Stock Operably Associated With Shaping Surface To Form Indefinite Length Product Patents (Class 425/224)
  • Patent number: 7186107
    Abstract: A pipe for supplying a dope to a co-casting die consists of a gooseneck portion connected to a feed block of the co-casting die, and a straight pipe portion connected to the gooseneck portion. The gooseneck portion has a radius of curvature of 50 mm to 400 mm, and the straight pipe portion forms an angle of 0 to 20 degrees to the horizontal plane. Venting valves are opened up at the beginning of dope feeding. and are closed to some extent as the dope comes out. After the air is completely vented out, the venting valves are completely closed. Thereby, an air collection is completely let out from the pipe, a plastic web discharged from die lips of the co-casting die would not contain any air bubbles, it is prevented that the web splashes to put on the die lips, causing streaks on the produced film.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: March 6, 2007
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshikazu Nakamura
  • Patent number: 7179410
    Abstract: Production of foamed materials in a horizontal machine, and said machine itself, reactants being fed to a conveyor at one end of the machine and foam produced being removed at the other end, wherein the foam is generated in an expansion chamber defined at its inlet by a closed reactant feed zone, at its outlet by a body of foam already expanded or partly expanded, and laterally and vertically by travelling webs, the webs giving a diverging cross section to the chamber.
    Type: Grant
    Filed: July 26, 2001
    Date of Patent: February 20, 2007
    Assignee: Cannon Viking Limited
    Inventor: Anthony Charles Murray Griffiths
  • Patent number: 7160093
    Abstract: Disclosed is an apparatus for continuously producing an artificial marble plate capable of simultaneously and uniformly hardening a raw material compound for an artificial marble plate, preventing the warpage of the artificial marble plate, and improving heat transmission efficiency and productivity. The apparatus includes upper and lower carrier films facing each other and receiving a raw material compound for the artificial marble plate into a gap therebetween; upper and lower horizontal heating plates receiving the upper and lower carrier films into a gap therebetween, each including temperature controller and heater for heating upper and lower surfaces of the raw material compound at the same temperature by the same heat transmission manner to harden the raw material compound; and a pair of gaskets disposed at horizontal edges of the upper and lower carrier films for regulating thickness and width of the artificial marble plate obtained by hardening the raw material compound.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: January 9, 2007
    Assignee: LG Chem, Ltd.
    Inventors: Bong-Hyun Kwon, Hang-Young Kim, Dong-Jin Bae, Kang-Yup Lee
  • Patent number: 7101163
    Abstract: Slabstock foam free of cavities can be produced without any restriction, i.e. also from rapidly reacting chemical systems, by introducing the liquid reaction mixture from underneath, in front of, and/or through an optionally swivellable floor plate, wherein the floor plate and the inlet for introducing the liquid reaction mixture is arranged in a manner such that the reaction mixture above the floor plate is substantially still liquid.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: September 5, 2006
    Assignee: Hennecke GmbH
    Inventors: Hans-Michael Sulzbach, Lothar Röhrig, Reiner Raffel
  • Patent number: 7033632
    Abstract: A device and process for adjustably controlling the dimensions of an extruded food product cast into a sheet using, for example, a pressure manifold mounted on a casting belt, or a chill roll/gauge roller combination.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: April 25, 2006
    Assignee: Schreiber Foods, Inc.
    Inventors: Franco Milani, Shawn Owens
  • Patent number: 7029265
    Abstract: An apparatus for the continuous and nondestructive production of plastic panels which are provided with undercut anchoring studs, web profiles or other forms of attachment (28) on one or both surfaces comprises a temperature-controlled chill roll (11), which has peripheral cooling bores (15) in the roll body (17). The roll body (17) is formed at the circumference as a polygon with flat supporting surfaces (25), against which the molding/demolding strips (13) are placed or from which they are lifted. The molding/demolding strips (13) are moved by means of piston/cylinder arrangements (16) and piston rods (18). The piston rods (18) move through transverse bores through the roll body (17). The melt is filled into molds (27) of the molding/demolding strips (13) by the counterpressure between the shaping roll (11) and a counterroll (10) and is cooled down. During the filling of the molds (27), the molding/demolding strips (13) are pressed against the flat faces of the roll body (17).
    Type: Grant
    Filed: December 3, 2003
    Date of Patent: April 18, 2006
    Assignee: Alois Gruber GmbH
    Inventor: Alfred Plammer
  • Patent number: 6994533
    Abstract: A method and apparatus for producing microporous films. The method utilizes a casting surface and a condensing surface. The condensing surface is spaced from the casting surface to form a gap. The distance between the surfaces forming the gap is relatively small and is preferably less than 3 cm. A material, capable of forming microporous films through thermally induced phase separation processes, is cast onto the casting surface, preferably through conventional extrusion practices. The material contains at least one evaporative component that generally flashes off upon formation of the microporous material and condenses on the condensing surface.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: February 7, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Robert A. Yapel, Shannon K. Hughes, William Blake Kolb
  • Patent number: 6990791
    Abstract: This invention relates to a method and apparatus for forming soft capsules and provides novel processing flexibility. The apparatus comprises a three-way valve injector wedge. This injector wedge allows for set-up of the encapsulation machine with a placebo fill and quick change over to active fill. This conserves use of the active ingredient.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: January 31, 2006
    Assignee: R.P. Scherer Technologies, Inc.
    Inventors: Keith Tanner, Robert P. Waranis
  • Patent number: 6908580
    Abstract: An apparatus for the continuous and nondestructive production of plastic panels which are provided with undercut anchoring studs, web profiles or other forms of attachments (28) on one or both surfaces comprises a temperature-controlled chill roll (11), which has peripheral cooling bores (15) in the roll body (17). The roll body (17) is formed at the circumference as a polygon with flat supporting surfaces (25), against which the molding/demolding strips (13) are placed or from which they are lifted. The molding/demolding strips (13) are moved by means of piston/cylinder arrangements (16) and piston rods (18). The piston rods (18) move through transverse bores through the roll body (17). The melt is filled into molds (27) of the molding/demolding strips (13) by the counterpressure between the shaping roll (11) and a counterroll (10) and is cooled down. During the filling of the molds (27), the molding/demolding strips (13) are pressed against the flat faces of the roll body (17).
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: June 21, 2005
    Assignee: Alois Gruber GmbH
    Inventor: Alfred Plammer
  • Patent number: 6887061
    Abstract: Apparatus and method for forming sheets, comprising a pair of drums moving a belt to define a path for curing the sheets. Uncured material preferably polychloroprene, is put on the belt and squeezed between the drum and a roller to adjust the thickness of the layer. The drums rotate at a rate to permit the material to cure between the first and the second drum. Ovens cure the polychloroprene, which is removed at the second drum. The sheet has a thickness of from at least 0.004 inches to more than 0.25 inches. A plurality of sources supply material of at least two colors to form a sheet having stripes. Preferred sheets have an elongation to break of about 150% to about 1500%, a tensile strength of about 5 Mpa to about 50 Mpa and a modulus at 300% elongation of about 1 Mpa to about 10 Mpa.
    Type: Grant
    Filed: November 23, 2001
    Date of Patent: May 3, 2005
    Inventors: James A. Donovan, Patrick J. Lamb
  • Patent number: 6884060
    Abstract: This invention relates to a method and apparatus for forming soft capsules and provides novel processing flexibility. The apparatus includes extrusion dies as an alternative to spreader boxes and the use of melt-on-demand technology to enhance the long term stability of the film-forming materials. Preferred embodiments provide a positive displacement pump to transport the molten film-forming material from the melt-on-demand device to the extrusion device and preferably a reservoir means disposed between said extrusion device and said means to melt said film-forming material. The encapsulation apparatus may also include a valved injection wedge.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: April 26, 2005
    Assignee: R.P. Scherer Technologies, Inc.
    Inventors: Keith Tanner, Steve Burnett, David Walker, Peter Beke, Norman Stroud, Mani Sundararajan
  • Patent number: 6866492
    Abstract: A gypsum board forming device having a gypsum forming station including two laterally disposed edger shoes, and at least one laterally disposed edger bar clamping element on the edger bar. In one embodiment a laterally extending forming plate extends over the top surface of the formed gypsum board, the forming plate including a plurality of micropore conduits through which pressurized water is supplied to provide a film of smoothing water over the top surface of the gypsum board. In another embodiment the edger shoes have a flapper mechanism for retaining unset slurry skimmed off the surface of the gypsum board by the edger bar.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: March 15, 2005
    Assignee: BPB plc
    Inventors: Robert J. Hauber, Christopher J. Sanders, Mark E. Hennis, Michael P. Fahey
  • Patent number: 6848897
    Abstract: This invention pertains to technology of fabricating thin films featuring anisotropic properties such as: optical, magnetic, electric conductivity and others. In particular, this invention is related to devices for obtaining polarizing films from liquid-crystalline solutions of organic materials, for example organic dyes. The disclosed method and device permits the fabrication of anisotropic films from liquid-crystalline solution with high characteristics and high degree of perfection of the oriented structure with significant reproducibility of results. The device makes use of a mechanical element for receiving and guiding the liquid crystal solution onto a substrate and then providing an orienting action to the kinetic elements as they are delivered.
    Type: Grant
    Filed: January 8, 2002
    Date of Patent: February 1, 2005
    Assignee: Optiva, Inc.
    Inventors: Pavel I. Lazarev, Michael V. Paukshto
  • Patent number: 6846552
    Abstract: A plant (10) for the production of highly flexible and relatively thin sheets or panels (38) of agglomerate material comprising: a mixer crusher (12), a hopper (15) designed to accept the crushed and rolled material (24) and to transfer it to a distributor or spreader (16) positioned below the hopper, said spreader (16) comprising a substantially cylindrical container (30) with a loading opening (31), adjacent, in use, to said hopper (15) and comprising a discharge slot (32) on the opposite side to said opening (31), and a mixing device of the agglomerate material (24) inside said container (30). The mixing device comprises a pair of blades (35) fixed to a shaft (34) rotating around an axis not corresponding to that of said container (30) and in particular offset towards said slot (32), so that during their rotation the blades almost skim said slot.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: January 25, 2005
    Assignee: Stone Italiana SRL
    Inventor: Roberto Dalla Valle
  • Patent number: 6821106
    Abstract: 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: Grant
    Filed: June 24, 2003
    Date of Patent: November 23, 2004
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Ernest Wilford Looman, Jr., Bruce Joseph Turner
  • Patent number: 6780354
    Abstract: A method employing a casting head having a variably displaceable cavity surface. The casting head comprises a cavity, at least partially formed by plurality of surfaces, including a carrier surface adjacent the cavity, and a variably displaceable drive surface for controlling a pressure of a viscous casting material in a region proximate the carrier surface. In one embodiment of the invention, the casting head further comprises a doctor blade, disposed proximate the carrier surface, forming a gap therebetween for egress of the casting material. In another embodiment of the casting head, the variably displaceable drive surface is comprised of a piston. The piston is actuated by a driver-controlled motor according to a pre-determined displacement program, or according to the level of the casting material in the cavity.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: August 24, 2004
    Assignee: The DirectTV Group, Inc.
    Inventors: Klaus Robinson, Matthew T. Sinnott, Elena Sherman
  • Patent number: 6767500
    Abstract: A film is formed by casting a ribbon on a support from a flow cast die while pulling said ribbon toward said support by providing a decompression area. The decompression area is divided into a middle portion, a left portion and a right portion. Degrees of decompression in these three portions satisfy the following formulae: 0<(PC−PL)×100/|PC|<15; 0<(PC−PR)×100/|PC|<15; |PL−PR|×100/|0.5(PL+PR)|<10; wherein PC is a degree of decompression in said middle portion, PL a degree of decompression in said left portion, and PR a degree of decompression in said right portion. The film obtained by the above method is suitable for a polarizing plate protection film, which is used for a liquid crystal display device.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: July 27, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hidekazu Yamazaki, Yukihiro Katai, Toshikazu Nakamura
  • Patent number: 6749417
    Abstract: A method for producing ceramic green sheets allows the foreign substances on the surface of a carrier film to be reliably removed, prevents fluctuation of the path line when a carrier film is transferred by a foreign substance removal device, and enables a ceramic green sheet having a low local variation in thickness to be achieved. In this method for ceramic green sheets, a carrier film is transferred, the transfer direction of the carrier film is changed by a support roll, and the foreign substances on the carrier film surface are removed by an adhesive roll as a foreign substance removal device at the area where the carrier film is in contact with the peripheral surface of the support roll. Then ceramic slurry is applied on the carrier film using a ceramic slurry applying unit, and thereby a ceramic green sheet is formed.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: June 15, 2004
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Shigenobu Asakawa, Yutaka Iseki
  • Publication number: 20040109910
    Abstract: An apparatus for the continuous and nondestructive production of plastic panels which are provided with undercut anchoring studs, web profiles or other forms of attachments (28) on one or both surfaces comprises a temperature-controlled chill roll (11), which has peripheral cooling bores (15) in the roll body (17). The roll body (17) is formed at the circumference as a polygon with flat supporting surfaces (25), against which the molding/demolding strips (13) are placed or from which they are lifted. The molding/demolding strips (13) are moved by means of piston/cylinder arrangements (16) and piston rods (18). The piston rods (18) move through transverse bores through the roll body (17).
    Type: Application
    Filed: December 3, 2003
    Publication date: June 10, 2004
    Applicant: Alois Gruber GmbH
    Inventor: Alfred Plammer
  • Patent number: 6740282
    Abstract: Magnetizable fibers dispersed in a viscous body, particularly reinforcing metal fibers dispersed in a wet cementitious material, is carried out by providing a fiber aligning member (15) having a nonmagnetic wall (17) including a first wall portion (17A) and a second wall portion (17B), moving the aligning member (15) relative to the viscous body with the first wall portion (17A) leading and the second portion (17B) trailing it and with the first and second wall portions (17A, 17B) contacting the viscous body, and directing a magnetic field into the viscous body through the first wall portion (17A) to subject the fibers (F) to a moving magnetic field.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: May 25, 2004
    Inventor: Björn Svedberg
  • Patent number: 6729867
    Abstract: 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: Grant
    Filed: April 26, 2001
    Date of Patent: May 4, 2004
    Assignee: Swiss Caps Rechte und Lizenzen AG
    Inventors: Alois Peter, Andreas Egli
  • Patent number: 6713011
    Abstract: An apparatus and method for electrospinning polymer fibers and membranes. The method includes electrospinning a polymer fiber from a conducting fluid in the presence of a first electric field established between a conducting fluid introduction device and a ground source and modifying the first electric field with a second electric field to form a jet stream of the conducting fluid. The method also includes electrically controlling the flow characteristics of the jet stream, forming a plurality of electrospinning jet streams and independently controlling the flow characteristics of at least one of the jet streams.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: March 30, 2004
    Assignee: The Research Foundation at State University of New York
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Dufei Fang
  • Patent number: 6702966
    Abstract: A method is provided for manufacturing cement fiber sheets by supplying slurry primarily including fibers and cement as main material components onto a permeable sheet, and suctioning and dewatering the slurry. The method includes a foreign matter removing operation for removing foreign matter in the slurry material before supplying it to the permeable sheet, a thickness control operation for bringing the slurry to a specified thickness after the foreign matter removing process, and a leveling operation for smoothing the slurry surface after the thickness control process. Thus, treatment for foreign matter contained in slurry as well as thickness control, is throughly carried out, so that the product surface quality is ensured.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: March 9, 2004
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Shiniti Suzuki, Yoshiharu Ookubo, Hirosi Watanabe, Yasusi Sakamoto, Katunori Akiyama, Yosuke Tanaka
  • Patent number: 6695606
    Abstract: An extrusion apparatus for extruding visco-elastic materials includes an extruder head for preliminary shaping of a visco-elastic melt and a splice bar die assembly for final shaping of the visco-elastic melt. Both the extruder head and the die assembly have flow channels that include low elongational flow zones where elongational flow is reduced and controlled, thereby reducing and controlling the resulting shrinkage of the extrudate. Extrudate shrinkage can also be reduced and controlled by controlling the die swell of the visco-elastic melt by rotating the roller at a selected roller speed less than the melt speed.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: February 24, 2004
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Gary Robert Burg, Steven John Deren, Richard David Vargo
  • Patent number: 6682598
    Abstract: A drying apparatus 10 for casting machine 80, including tunnel 20 divided into first chamber 41 and second chamber 46 by barrier 35. Each chamber 41,46 includes gas inlet 50 connected to gas source 100 for introducing inert carrier gas into chamber 41,46 and gas outlet 60 connected to condenser 71 for removing carrier gas with dissolved solvent from chamber 41,46. Porous diffuser 55 and slotted cover 63 cooperate to maintain smooth plug flow of carrier gas in chamber 41,46. Carrier gas flow is parallel to movement of support strip 91 in first chamber 41 and counter to movement of strip 91 in second chamber 46. Slurry 102 is converted to gel in first chamber 41. Gel is dried to green tape in second chamber 46. Gas pump 76 and flowmeter 77 determine flow rate of carrier gas in chamber 41,46. Partial pressure of solvent vapor is near saturation in first chamber 41; cover heat means 37 prevents condensation of solvent vapor inside tunnel 20. Condenser 71 removes solvent vapor from carrier gas for reuse.
    Type: Grant
    Filed: October 1, 2001
    Date of Patent: January 27, 2004
    Assignee: Electronic Circuit Systems
    Inventors: Paul H. Steinmueller, Ernest J. Joly
  • Patent number: 6655944
    Abstract: An apparatus for the continuous production of expanded plastic panels with inserts on their longitudinal edges, comprising a head for pouring a reactive mixture between a first and a second containment layers in order to obtain a foamed layer, a containment and advancement assembly for the layers being constituted by a lower slat conveyor and by an upper slat conveyor. The lower slat conveyor has lateral containment blocks at the ends of its slats. At least some of the blocks are provided thereon with the inserts to be incorporated in the foamed layer, for picking and placing the inserts on the engaging elements provided in the apparatus.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: December 2, 2003
    Assignee: Impianti Oms S.p.A.
    Inventors: Loris Massarotto, Enrico Lombardini
  • Publication number: 20030185925
    Abstract: A cool-dissolving apparatus for producing a solution from a mixture of polymer and solvent includes a double-structure pipe which is constructed of a cylinder and a jacket surrounding the cylinder. A mixture is fed in the cylinder, and a cooling medium flows in a space between the cylinder and the jacket oppositely to the mixture in the cylinder such that polymer dissolves to the solvent. The obtained solution is supplied in a heat-dissolving apparatus including a pipe for feeding the solution. In the heat-dissolving apparatus, the pipe extends horizontally or upwards in a feeding direction of the solution.
    Type: Application
    Filed: March 28, 2003
    Publication date: October 2, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Takuro Nishimura, Yukihiro Katai
  • Publication number: 20030183971
    Abstract: Production of foamed materials in a horizontal machine, and said machine itself, reactants being fed to a conveyor at one end of the machine and foam produced being removed at the other end, wherein the foam is generated in an expansion chamber defined at its inlet by a closed reactant feed zone, at its outlet by a body of foam already expanded or partly expanded, and laterally and vertically by travelling webs, the webs giving a diverging cross section to the chamber.
    Type: Application
    Filed: February 7, 2003
    Publication date: October 2, 2003
    Inventor: Anthony Charles Murray Griffiths
  • Patent number: 6619941
    Abstract: An improved air cooling device for the production of cast film is shown. The device is intended to increase production rates for film without reducing the level of film gauge control. The devices utilizes a soft box for the bulk of the cooling and a directional source of pressurized air to deflect exhaust air from the soft box from striking the web curtain between the die and chill roll.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: September 16, 2003
    Assignee: Battenfeld Gloucester Engineering Co., Inc.
    Inventors: David J. Smith, Kenneth D. Warnock, Jr.
  • Publication number: 20030160360
    Abstract: A mold shorter side frame of a continuous casting mold is exchanged integrally as it is to enable on-line change of the thickness of the cast piece.
    Type: Application
    Filed: November 22, 2002
    Publication date: August 28, 2003
    Inventor: Makoto Naito
  • Patent number: 6589038
    Abstract: A casting head having a variably displaceable cavity surface. The casting head comprises a cavity, at least partially formed by plurality of surfaces, including a carrier surface adjacent the cavity, and a variably displaceable drive surface for controlling a pressure of a viscous casting material in a region proximate the carrier surface. In one embodiment of the invention, the casting head further comprises a doctor blade, disposed proximate the carrier surface, forming a gap therebetween for egress of the casting material. In another embodiment of the casting head, the variably displaceable drive surface is comprised of a piston. The piston is actuated by a driver-controlled motor according to a pre-determined displacement program, or according to the level of the casting material in the cavity.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: July 8, 2003
    Assignee: Hughes Electronics Corporation
    Inventors: Klaus Robinson, Matthew T. Sinnott, Elena Sherman
  • Patent number: 6537054
    Abstract: The invention relates to an apparatus for manufacturing expansion-molded articles continuously by conveying foamed beads into a heating region sandwiched between upper and lower belts. The apparatus has a belt that continuously travels along the upper inside face of a passageway, defined by structural members, whose cross-section constitutes an approximately rectangular shape and a belt that continuously travels along the lower inside face thereof. At least one of the upper and lower structural members that form the passageway is capable of movement in the vertical direction between the side-face structural members such that the thickness of the expansion-molded article can easily be varied. And at least one of the side-face structural members is capable of movement in the lateral direction between the upper and lower structural members such that the width of the expansion-molded article can easily be varied.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: March 25, 2003
    Assignee: JSP Corporation
    Inventors: Takashi Kitahama, Masato Naito, Ryo Kikusawa
  • Publication number: 20030038391
    Abstract: Systems and methods for processing dope for the manufacture of microporous phase inversion membrane having any one of a plurality of different pore sizes from a single master dope batch is disclosed. The systems and methods include formulating a single master batch of dope preferably maximizing the non-solvent to solvent ratio for a given weight percentage of polymer for use in a microporous phase inversion membrane casting operation to produce phase inversion membranes having one of a plurality of different predetermined pore sizes. The master dope batch is controllably formulated in a vessel such that the temperature of the dope does not exceed a predetermined maximum mixing temperature and is maintained at a relatively low temperature (lower than the mixing temperature) suitable for storage.
    Type: Application
    Filed: May 31, 2001
    Publication date: February 27, 2003
    Inventors: Mark T. Meyering, William R. Kelly, Joseph G. Wallace
  • Patent number: 6499984
    Abstract: A single pass, continuous, automated system for producing a pharmaceutical granulation includes multiple feeders to feed powders and liquids, a twin screw processor to granulate, a radio frequency or microwave based drying apparatus to dry the granulation, and at least one mill to process the dried granulation to desired particle sizes. The system incorporates means for monitoring key process parameters on-line, all of which are controlled by a controller provided with feedback at each component of the system. The granulation produced can be compressed into a tablet or incorporated into a capsule, both having a uniform distribution of the active ingredient. The system produces product having consistent properties even when production is scaled up for manufacture of the tablet in commercial volume.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: December 31, 2002
    Assignee: Warner-Lambert Company
    Inventors: Isaac Ghebre-Sellassie, Matthew J. Mollan, Jr., Nitin Pathak, Mayur Lodaya, Mebrahtu Fessehaie
  • Publication number: 20020175449
    Abstract: An apparatus and methods for electrospinning polymer fibers and membranes are described. The methods include in one aspect electrospinning a polymer fiber from a conducting fluid containing the polymer in the presence of a first electric field established between a conducting fluid introduction device and a ground source and modifying the first electric field with a second electric field to form a jet stream of the conducting fluid. In another aspect the methods include forming an electrospinning jet stream of the conducting fluid and electrically controlling the flow characteristics of the jet stream. In yet another aspect the methods include forming a plurality of electrospinning jet streams of the conducting fluid and independently controlling the flow characteristics of at least one of the jet streams.
    Type: Application
    Filed: May 16, 2001
    Publication date: November 28, 2002
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Dufei Fang
  • Publication number: 20020171164
    Abstract: A thermosetting foam, preferably a polyurethane foam is prepare by mixing all the components in one or more extruders and directing the chemical streams to a mixing head where the catalyst is added. Thus, the reaction can be controlled in a facile manner, whereby clogging of the extrusion head is avoided.
    Type: Application
    Filed: May 15, 2001
    Publication date: November 21, 2002
    Inventors: Steve Halterbaum, David G. Wernsing
  • Patent number: 6479007
    Abstract: An apparatus and method for controlling the pore structure of thin polymeric sheets, such as porous membranes and thin films, during solvent casting or interfacial polymerization. The invention may be used to reduce or eliminate macrovoid pore defects from solvent-cast or interfacially polymerized polymeric membranes used in a variety of separations or controlled release tasks or to create a desired pore structure in porous thin films, such as may be used in breathable garments, surgical dressings, and screen printing. A nonuniform electric field is generated at one or more locations in proximity to a liquid film in which a desired pore structure is to be formed. Due to the difference in dielectric constant between the liquid within the pores and that in the surrounding liquid, the electric field causes an attractive or repulsive force on the evolving pores.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: November 12, 2002
    Assignee: University Technology Corporation
    Inventors: Alan R. Greenberg, William B. Krantz, Andrew E. Neice, Paul W. Todd
  • Publication number: 20020135087
    Abstract: A method and apparatus for producing microporous films. The method utilizes a casting surface and a condensing surface. The condensing surface is spaced from the casting surface to form a gap. The distance between the surfaces forming the gap is relatively small and is preferably less than 3 cm. A material, capable of forming microporous films through thermally induced phase separation processes, is cast onto the casting surface, preferably through conventional extrusion practices. The material contains at least one evaporative component that generally flashes off upon formation of the microporous material and condenses on the condensing surface.
    Type: Application
    Filed: September 21, 2001
    Publication date: September 26, 2002
    Applicant: 3M Innovative properties Company
    Inventors: Robert A. Yapel, Shannon K. Hughes, William Blake Kolb
  • Patent number: 6419473
    Abstract: A continuous, friction-actuated extrusion apparatus, comprised of a cylindrical first member having a circumferential groove formed in its peripheral surface. A stationary second member projects into the groove and defines a passageway between the first member and the second member, the passageway having an entry end and an exit end. A metal feeding device for feeding metal into the passageway at the entry end as the cylindrical first member rotates toward the exit end. An abutment member extends across the passageway at the exit end and at least one die orifice is located at the exit end of the passageway. At least one restriction member is located in the passageway between the orifice and the entry end, the restriction member constricting the passage for a portion thereof.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: July 16, 2002
    Assignee: ElectroCopper Products Limited
    Inventor: Daniel J. Hawkes
  • Publication number: 20020081344
    Abstract: A spiral conveyor for a concrete extrusion machine has a first spiral conveyor section with a first external diameter. There is a second spiral conveyor section having a second external diameter which is greater than the first diameter. The second section is spaced apart from the second section. A third spiral conveyor section is between the first section and the second section. The first end of the third section is connected to the first section and the second end is adjacent to the second section. The second spiral conveyor section may be mounted on a hollow shaft of the third section. The second section has two longitudinally divided components, each having a recess therein. Connectors interconnect the two components and a locking device is between the hollow shaft and the second section.
    Type: Application
    Filed: October 22, 2001
    Publication date: June 27, 2002
    Inventor: George Putti
  • Patent number: 6402498
    Abstract: A machine and method for producing bristles and a support surface for the bristles, are disclosed. An extruder feeds material from a supply source to an extrusion die and a forming die. The circumferential surface of the drum includes a plurality of recesses in the desired shapes and patterns for forming the bristles. In addition, a wide shallow groove in the extrusion die is formed in the desired shape of the bristle support surface. As the fluid material is extruded between the extrusion die and the forming die, the material fills the recesses in the drum that are facing the extrusion die as well as the groove in the extrusion die. The drum rotates to expose empty recesses and to rotate the filled recesses and material in the groove away from the extrusion die. As the fluid material is rotated away from the extrusion die, it cools and solidifies.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: June 11, 2002
    Inventor: Gary D. Dunn
  • Patent number: 6387304
    Abstract: A method for producing artificial marble having a stripe pattern comprising injecting liquid resins having different colors into a molding cell so that they are laminated to form two or more layers; then moving a comb-like tool through the laminated liquid resins while allowing the teeth to contact the bottom surface of the molding cell, then curing the liquid resins to form artificial marble, wherein, the comb-like tool is allowed to move through the liquid resins while the interval between teeth of the comb-like tool is allowed to vary. Artificial marble can be produced having a natural marble-like appearance in which the interval of stripe varies in a natural fashion or having a radial cut moire stripe pattern.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: May 14, 2002
    Assignee: Du Pont-MRC Co., Ltd.
    Inventors: Nobuhiro Mukai, Masaaki Shibazaki, Sotaro Sasano
  • Patent number: 6375451
    Abstract: A tape casting machine has a casting base with a feed location lying generally in a horizontal plane, and a casting head positioned to dispense a slurry onto the casting base. The casting base and the casting head are movable relative to each other. The casting head includes a reservoir containing the slurry, and a doctor blade having a lower leading margin contacting the slurry in the reservoir and disposed adjacent to but not contacting the casting base. The slurry exits from the reservoir to the feed location of the casting base between the lower leading margin of the doctor blade and the casting base to form a cast tape. The lower trailing margin of the doctor blade has a curvature in the horizontal plane and/or a vertical plane.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: April 23, 2002
    Assignee: The Boeing Company
    Inventors: Klaus Robinson, Anna Lackner, Elena Sherman
  • Patent number: 6355343
    Abstract: A flexible composite release sheet providing a replicative surface with a desired surface effect and a method of manufacturing such a release sheet is disclosed. The release sheet is suitable for use in multicomponent reactive urethane casting systems. The invention further provides flexible composite release sheets having a first acrylic functional coating layer containing the desired surface effect and a second silicone release coating layer overlying the acrylic functional coating layer.
    Type: Grant
    Filed: July 8, 1998
    Date of Patent: March 12, 2002
    Assignee: S. D. Warren Services Company
    Inventor: Judith I. Glassock
  • Patent number: 6340442
    Abstract: A method and apparatus for producing tubular molded products from molding material includes a mold casing and a mold core having a common longitudinal central axis which is vertically disposed. The mold casing and mold core are spaced from one another to define a molding space therebetween. A supply device supplies molding material from above the molding space into the molding space. Treatment apparatus is disposed at treatment zones on the mold core for treating the molding material in the molding space, the treatment including treating the molding material by shaking the molding material or treating the molding material by heating the molding material, or both.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: January 22, 2002
    Assignee: iloma Automatisierungstechnik GmbH
    Inventor: Manfred Brokmann
  • Patent number: 6325610
    Abstract: An apparatus for molding and aligning microstructures on a patterned substrate using a microstructured mold. A slurry containing a mixture of a ceramic powder and a curable fugitive binder is placed between the microstructure of a stretchable mold and a patterned substrate. The mold can be stretched to align the microstructure of the mold with a predetermined portion of the patterned substrate. The slurry is hardened between the mold and the substrate. The mold is then removed to leave microstructures adhered to the substrate and aligned with the pattern of the substrate. The microstructures can be thermally heated to remove the binder and optimally fired to sinter the ceramic powder.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: December 4, 2001
    Assignee: 3M Innovative Properties Company
    Inventors: Raymond C. Chiu, Timothy Lee Hoopman, Paul Edward Humpal, Vincent Wen-Shiuan King, Kenneth R. Dillon
  • Patent number: 6273704
    Abstract: The present invention relates to a casting apparatus for formation of a resin-made membrane which is made to be capable of accomplishing a stable pressure reduction through a suction chamber irrespective of the dimension of an interval between a die and a cooling roll. Thus, in the apparatus according to this invention, a suction chamber is disposed independently of a die and is located to define a necessary seal gap with respect to a cooling roll. Further, a circumferentially moving mechanism is provided to shift the suction chamber along the circumferential directions of the cooling roll while maintaining the necessary seal gap. This invention is applicable, for example, to a biaxial oriented film machine, a non-oriented film machine, a sheet machine, and others.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: August 14, 2001
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hideo Kometani, Hidetoshi Kitajima, Takuya Gotou, Haruki Nakao, Daisuke Ooi
  • Publication number: 20010007684
    Abstract: A preimpregnated sheet material 250 impregnated with thermosetting resin is spooled around a bobbin, and two bobbins positioned one above the other constituting one unit is provided to feed the materials sequentially to a crease forming device 310, an open-trapezoid-shape forming device 330 and a U-shape forming device 340 where the materials are bent. The preimpregnated sheet member bent to form a U-shape is vertically mounted on another U-shaped member to form the shape of an H, and to the surfaces of said H-shaped member are provided release films 260 before the member is transferred to a hot press device 400. Said sheet material heated and pressed by the hot press device 400 is then heated for a predetermined time at an after-cure device, where thermosetting of the material is completed. The produced H-shaped member is then intermittently pulled out by a haulage device and cut into predetermined lengths.
    Type: Application
    Filed: January 8, 2001
    Publication date: July 12, 2001
    Applicant: Jamco Corporation
    Inventors: Toru Kasai, Kazumi Asari
  • Patent number: 6251330
    Abstract: Method and device for manufacturing plastic-based materials in web form, such as floor and wall covering materials, and also such a material manufactured by the method. During the production, spherical particles (12) in substantially one size are used. The particles are deposited as a layer (18) on a substrate (1) by doctoring by means of allowing the particle mass to flow down into a gap between a depositing member (16) and the passing substrate (1). Thereafter, the particles are sintered together by heating, whereafter the solidified layer (25) is caused to fuse into a homogenous form by means of heating during simultaneous compression in order to shape the web material (26).
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: June 26, 2001
    Assignee: Forbo International SA
    Inventors: Bengt Otto Johnard, Per Anders Fredrik Linden, Lasse Ryde
  • Patent number: 6234777
    Abstract: A foam bag cushion forming system for forming foam bag cushions with a vertical side edge sealer that forms vertical side edge seals in the film material with the foam introduction preferably occurring after the downstream side seal is formed, before the upstream side edge seal is formed, and while the film material is being shifted from one to the other. An upper edge sealer operates to seal the upper end of the film material downstream from the dispenser and preferably also downstream from the side edge sealer. Through operation of the end and side edge sealers and the foam dispenser, a foam bag cushion chain is formed. A bag cushion moving and confinement assembly is positioned to receive the bag chain and features two elongated members defining a bag cushion confinement space between them. At least one of the elongated members supports or represents a bag cushion movement device (e.g.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: May 22, 2001
    Assignee: Carpenter Co.
    Inventors: Charles R. Sperry, Vincent A. Piucci, Jr., Todd A. Hanna