Treating Between Rollers (e.g., Calendering, Etc.) Patents (Class 427/365)
  • Patent number: 6190729
    Abstract: A method and apparatus for two-side coating of a light base weight printing paper web containing mechanical pulp or recycled fiber. The first side of a web (5) is coated in a first coating station (1), the coating applied to the first side is dried at least partially in a first dryer unit (3). The second side of the web (5) is coated subsequent to the drying of the first side in a second coating station (2), and the coating applied to the second side is dried at least partially in a second dryer unit (4). Both coatings are formed by applying a required amount of coating mix onto the perimeter of respective soft film-coating rolls (22) and subsequently transferring the coat film to the web (5) in a nip (N1) formed between a respective backing roll (24) and the respective soft film-coating roll (22).
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: February 20, 2001
    Assignees: Valmet Corporation, Metsä-Serla Paperi Ja Kartonki Oy
    Inventors: Rauno Rantanen, Kai Vikman
  • Patent number: 6187371
    Abstract: A method of continuously producing a continuous paint coat of substantially constant, pre-determined thickness, and displaying a plural colour, familial, non-modular pattern, on a surface of a moving substrate, comprising the steps of depositing at least two discontinuous, randomly patchy, differently coloured, component paint deposits, at a predetermined, constant, long term deposition rate for each component deposit in terms of the volume of paint per unit area of the surface, within a single stationary target area of the surface, or within stationary target areas of the surface respectively associated with the component deposits and at least partly aligned in the direction of movement of the substrate, and thereafter spreading and smoothing the component paint deposits carried by the substrate from the target area or areas, to form the continuous coat.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: February 13, 2001
    Assignee: BHP Steel (JLA) Pty. Ltd.
    Inventors: Mark John Davies, Trevor James Horton
  • Patent number: 6183814
    Abstract: A coated paper product including a paper layer and a polymer layer, wherein the polymer layer includes a polylactide polymer composition having a ratio of Mz to Mn of greater than about 6. The polymer composition, when melted, exhibits a die swell of greater than about 1.25 for a melt flow index of greater than about 2. Polymer lactide compositions, methods of manufacturing the polymer composition and the coated paper product, and articles produced therefrom are also described.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: February 6, 2001
    Assignee: Cargill, Incorporated
    Inventors: James Nangeroni, Mark H. Hartmann, Matthew L. Iwen, Christopher Michael Ryan, Jeffrey J. Kolstad, Kevin T. McCarthy
  • Patent number: 6162489
    Abstract: An apparatus and method for producing a striped coating on a continuously moving strip are provided, in which the apparatus has a smoothing device including a doctor roll forming a nip with the strip. A stationary partition means is provided, which divides the nip into nip lengths, and upstream of the smoothing device is a means to deposit coating materials on the strip for delivery into the respective nip lengths at predetermined rates. The deposit means maintains a bead of coating material in each nip length and a stripe of coating material is formed on the strip from coating material escaping the respective nip length as the strip passes through the nip.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: December 19, 2000
    Assignee: BHP Steel (JLA) Pty Ltd
    Inventors: Udo Wolfgang Buecher, Trevor James Horton, Mark John Davies
  • Patent number: 6156387
    Abstract: The invention relates to a process for the thermomechanical surface treatment of flat webs of material, particularly those made of paper and carton, and to agents for performing said process. According to the process of the invention, adhesion between the flat web of material and the surface of the tool used in thermomechanical surface treatment, e.g., a roll or a press, is reduced or prevented by using an abhesive agent, which contains dicarboxylic dialkyl esters and/or diisoalkyl esters of C.sub.2 -C.sub.12 dicarboxylic acids with C.sub.1 -C.sub.13 n- and/or iso-alkanols as component with abhesive effect. The abhesive agent is preferably employed as an oil-in-water emulsion and is either applied to the surface of the tool used in said thermomechanical treatment or is added to the impregnating fluid or the paper coating mass or the moistening water or the steam in pre-moistening, or is applied to the paper web after the impregnating unit or directly before the smoothing roll.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: December 5, 2000
    Assignees: Stockhausen GmbH & Co. KG, Kaemmerer GmbH
    Inventors: Joachim Werres, Bernd Reinhardt
  • Patent number: 6146694
    Abstract: An improved design and manufacturing method is disclosed for calendered, double side segment coated webs. By staggering the leading edges and/or the trailing edges of the segment coatings on one side of the web from those on the other side, web damage, including the incidence of breakage, can be reduced. Further, vibration and wear on the calendering apparatus can be reduced. The invention is particularly useful for heavily calendered webs such as the electrodes in non-aqueous rechargeable lithium ion batteries.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: November 14, 2000
    Assignee: E-One Moli Energy (Canada) Limited
    Inventors: Jan Naess Reimers, Akiyoshi Manabe, Alexander Man-Chung Leung
  • Patent number: 6123996
    Abstract: The present invention relates to an aqueous composition for coating, such as sizing or application of a layer of a coating slip, of cellulose-based two-dimensional products. The composition has improved properties at increased temperatures and at high shear rates. These properties are achieved by using as a thickening agent a cellulose ether which is substituted with hydroxyalkyl groups, such as hydroxyethyl and hydroxypropyl, and alkyl groups having 1-3 carbon atoms, and which has a cloud point in the range from 35 C. to 80 C.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: September 26, 2000
    Assignee: Akzo Nobel Surface Chemistry AB
    Inventors: Kerstin Larsson, Erland Hermansson, Dan Eklund, Peter Dahlvik
  • Patent number: 6123982
    Abstract: The floss is comprised of a texturized yarn that has been coated and impregnated with a water-soluble polymer and the water-soluble polymer coating cured and set while the yarn is stretched and is under tension. The yarn while stretched and tensioned is at a reduced width, which allows for easier insertion of the yarn floss between teeth. The yarn floss is wound onto a spool in the decreased width condition. For use, a length of floss is removed from the spool and placed between teeth. The saliva in the mouth dissolves the cured and set water-soluble polymer with the floss expanding to fill the space between the teeth. The floss is optionally coated with flavors, medicants and other substances. These can be synthetic or naturally occurring substances such as herbal substances.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: September 26, 2000
    Assignee: Colgate-Palmolive Company
    Inventor: Jose Eder Fontana
  • Patent number: 6117491
    Abstract: The present invention concerns a process and a coating color for coating a cellulosic web. According to the process an aqueous coating color is applied on the surface of the web. The invention comprises using a coating color which contains an aqueous polymer whose viscosity in an aqueous solution increases when the temperature rises. Preferably, methylcellulose or a corresponding polymer having a gelling temperature of about 5 to 10 .degree. C. more than the application tempature of the coating color is used. The temperature of the coating is increased after the application of the coating color in order to achieve gelling of the polymer. As a result, the coating color rapidly solidifies which decreases the amount of mixture being recycled and it reduces mist-formation in the film press method and improves coverage of coating applied by conventional blade coating.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: September 12, 2000
    Assignee: Metsa-Serla Oy
    Inventors: Anne Rutanen, Petri Silenius, Jyrki Kettunen
  • Patent number: 6113986
    Abstract: A method of applying a coating to a surface of a base product that includes providing a calender stack that includes a rotatable king roll and a feeding roll is provided. The king roll is opposed to the feeding roll to define a nip portion between the rolls. A cleaning blade is provided and placed in contact with the king roll and a calender box is provided and placed adjacent a surface of the king roll. A coating material is applied to the surface of the king roll utilizing the calender box. A base product is passed through the nip portion to apply the coating material to a surface of the base product to form the coating thereon.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: September 5, 2000
    Assignee: Fort James Company
    Inventors: Kenneth John Shanton, Erland R. Sandstrom, Timothy Paul Hartjes, Dean Patrick Swoboda
  • Patent number: 6113981
    Abstract: A method for coating paperboard comprising heating paperboard to a temperature sufficient to remove at least some moisture from the paperboard; applying an aqueous dispersion of at least one water-dispersible polymer to the paperboard product; heating the paperboard to at least partially cure the water-dispersible polymer; and cooling the paperboard to at least 160 degrees Fahrenheit to reduce the tackiness of the cured water-dispersible polymer.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: September 5, 2000
    Assignee: Madison-Oslin Research
    Inventors: Morgan O. Ogilvie, Jr., Paul M. Whatley, Jr., Michael W. Olvey
  • Patent number: 6068934
    Abstract: The present invention provides a sheet molding compound consisting in a sandwich structure comprising a central layer of reinforced uncured heat hardenable sheet molding compound; and two outer layers of a release film having low permeability to hydrocarbons comprising at least one layer (i) of a polyamide/polyolefin alloy having a polyamide matrix and at least one layer (ii) of a polyolefin.
    Type: Grant
    Filed: January 12, 1999
    Date of Patent: May 30, 2000
    Assignee: Elf Atochem S.A.
    Inventors: Franck Vandekerckhove, Alain Bouilloux, Regis Jacquemet, Bruno Echalier
  • Patent number: 6033720
    Abstract: A guidewire includes a shaft portion and a tip portion with the tip portion having a plastic tubular coating thereover. The shaft portion of the guidewire has a given diameter and the tip portion has a diameter which decreases towards a distal end thereof. A tubular plastic coating is placed on at least the tip portion of the guidewire. The outer diameter of the coating on the tip portion exceeds the diameter of the shaft portion. The diameter of the plastic coating is reduced so as to be no greater than the diameter of the shaft portion. A hydrophilic coating may be applied over the shaft and the tip portion of the guidewire.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: March 7, 2000
    Assignee: Meadox Medicals, Inc.
    Inventors: Jacob Stoltze, Jorgen Kamstrup-Larsen
  • Patent number: 6034006
    Abstract: The subject of the invention is a process for manufacturing a glass strand mat, in which a binder is deposited continuously on a wad of glass strands. The strands are distributed on a moving conveyor, and then the wad is subjected to an oven treatment and possibly to calendering. The process consists of depositing on the wad of strands a liquid binder whose viscosity during deposition is less than approximately 40 millipascal seconds, the binder being formed by an aqueous solution of polyvinyl alcohol(s).
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: March 7, 2000
    Assignee: Vetrotex France S.A.
    Inventors: Michel Arpin, Fabrice Duchamp, Michel Mottet
  • Patent number: 6022436
    Abstract: An electrode is made by depositing a mixture of particulate carbon and very fine thermoplastic binder on the surface of a fluid permeable dielectric web. The coated web is then passed between a pair of rollers that apply heat to at least the Vicat softening point of the binder and simultaneously apply pressure to fuse the carbon and binder to the web. Two of such electrodes are employed to manufacture a flow-through capacitor suitable for use in water treatment.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: February 8, 2000
    Assignee: Koslow Technologies Corporation
    Inventors: Evan E. Koslow, Richard D. Kendrick, Gordon Spilkin
  • Patent number: 6013359
    Abstract: A printing paper, especially a newsprint base paper, comprising: a base paper; and a coating layer for improving surface strength of the coated paper and releasing-property when two sheets of the coated paper are stacked, which coating layer is formed on the base paper by using a coating-transcription system such as a gate roll coating system, which coating layer comprises at least either a homopolymer polyacrylamide or a nonionic-copolymer polyacrylamide in a coating weight of from 0.01 g/m.sup.2 to 0.2 g/m.sup.2, wherein the homopolymer polytcrylamide and the nonionic-copolymer polyacrylamide have a weight average molecular weight ranging from 20,000 to 250,000, thereby improving not only surface strength but also releasing-property in a printing paper, especially in a newsprint paper having a basis weight less than 46 gm.sup.2.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: January 11, 2000
    Assignees: Nippon Paper Industries Co., Ltd., Seiko Chemical Industry Co., Ltd.
    Inventors: Toshiyuki Takano, Motoi Fukuda, Toshimi Satake, Masahide Taniguchi
  • Patent number: 6010752
    Abstract: A profiled element for use as a wiping strip in a motor vehicle screen wiper is made of rubber or an elastomer, and has a coating formed by applying a solution to the profiled element. The solution comprises a powder of graphite for example, which is dispersed in a resin, and the solution includes a proofing agent for making the coating impermeable.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: January 4, 2000
    Assignee: Valeo Systemes D'Essuyage
    Inventor: Michel Oulie
  • Patent number: 5989696
    Abstract: A laminate and a coated web suitable for use as containers exhibiting a static decay of at least 90% in less than 2 seconds while measured at +/-5,000 volts, at 10% relative humidity and 24 hours conditioning is disclosed. The laminate and coated web comprise a paper substrate or a synthetic fiber substrate, a first coating on at least one surface of said paper substrate comprising synthetic hectorite clay and optionally a second coating comprising an organic or inorganic pigment applied over at least one of said coatings. These laminates are useful as antistatic coated paper containers.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: November 23, 1999
    Assignee: Fort James Corporation
    Inventors: Donald C. McCarthy, Debra D. Bowers
  • Patent number: 5985080
    Abstract: The process for producing a resin-metal laminate material of the present invention is characterized by comprising providing a heating zone for a metal substrate, a die for feeding a thermoplastic resin in a film form, a pair of temperate laminate rolls for adhering the thermoplastic resin to at least one surface of the metal substrate, and quenching means for quenching the resulting laminate material, along a passage for the metal substrate, supporting and conveying a molten film of the thermoplastic resin from the die with the corresponding temperate laminate rolls and feeding it to a nipping position between the temperate laminate rolls, and fusing the thin film of the thermoplastic resin to at least one surface of the heated metal substrate by means of the temperate laminate rolls. This method can lead to the formation of a uniform and thin-film resin coating on the metal substrate at a high speed, and in addition, the formed resin film has very high intimate adhesiveness and film properties.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: November 16, 1999
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Akira Kobayashi, Norimasa Maida, Koji Yamada, Katsuhiro Imazu
  • Patent number: 5985367
    Abstract: A process for preparing a coated printing paper by applying a coating solution containing a pigment and an adhesive to a base paper, which comprises coating the base paper with the coating solution containing 30 to 90% by weight, based on 100% by weight of pigment components, of rice grain- or spindle-shaped precipitated calcium carbonate as a pigment component, the precipitated calcium carbonate being produced by slaking calcium oxide with a white liquor, followed by causticization with a green liquor, at a causticizing step during pulp production by the sulfate process or the soda process; whereby the coated printing paper free from uneven gloss, mottling, and trapping unevenness, and excellent in ink drying properties and operability with a blade coater is provided.
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: November 16, 1999
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Eiji Nishijima, Yuji Sato, Yasunori Nanri, Shoichi Miyawaki
  • Patent number: 5935643
    Abstract: There is disclosed a method for manufacturing an electrode for phosphate type fuel cells, utilizing a combination of a coating process and a rolling process. Carbon paper is waterproofed to give an electrode support. Separately, platinum-dispersed carbon powder (Pt/C) is added in a solvent and mechanically stirred to give a homogeneous mixture which is, then, added with a PTFE emulsion at an amount of about 40-55 wt % and stirred. Another stirring is executed in the presence of a bridge-builder and a peptization agent, to produce an electrocatalyst layer slurry. Using a coating apparatus, the electrocatalyst slurry is coated upon the electrode support in a uniform thickness. The resulting structure is dried for 30 min in an inert atmosphere of 225.degree. C. to completely remove the solvent from the catalyst layer, passed through a rolling apparatus and subjected to sintering for 30 min in an inert atmosphere of 350.degree. C., to produce the electrode.
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: August 10, 1999
    Assignee: Korea Institute of Energy Research
    Inventors: Rak-Hyun Song, Dong-Ryul Shin, Chang-Soo Kim, Byung-Rok Lee
  • Patent number: 5935496
    Abstract: A water soluble dicarboxylic acid or an alkali metal salt thereof acts as a mold release agent for salt pellets when a salt-contacting surface of a roll-type briquetting press is coated with from about 0.02 to about 5 mg/cm.sup.2 of a powder of the acid or alkali metal salt just prior to a charge of salt. The coating is achieved by spraying an air stream entraining the powder onto the press rolls or by spraying a solution of the release agent onto the rolls and evaporating the solvent to leave the powder on the rolls. The acid has from 6 to 10 carbon atoms; adipic acid being preferred. Salt pellets having a layer of the powder on their surface may be used in water softening systems wherein the pellets sit in a brine reservoir and supply salt for the recharging of an ion exchange resin. There is no formation of an unsightly scum on the surface of the brine and on the sides of the reservoir.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: August 10, 1999
    Assignee: Morton International, Inc.
    Inventor: Kurt J. Waatti
  • Patent number: 5925406
    Abstract: A method of making a gas permeable material having a diffusive gas permeability at 0.21 atmosphere diffusive driving force in the range of about 0.5.times.10.sup.5 cm.sup.3 /100 square inches/day to about 2.times.10.sup.5 cm.sup.3 /100 square inches/day. The method comprises the step of coating a pattern of spots of a gas impermeable material onto a porous substrate, followed by a step of enlarging the pattern of spots to cover greater than about 95% of the porous substrate such that the gas permeability occurs only through openings between the pattern of spots. The gas impermeable material is preferably a hot melt adhesive and the porous substrate is preferably a nonwoven. The step of enlarging the pattern of spots includes smearing substantially circular spots into oblong spots as the pattern of spots is printed onto the porous substrate until the oblong spots partially overlap. The smearing is achieved by operating a printing screen at a surface speed higher than a draw rate of the porous substrate.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: July 20, 1999
    Assignee: The Procter & Gamble Co.
    Inventors: Kenneth S. McGuire, Peter W. Hamilton
  • Patent number: 5897910
    Abstract: The present invention is a process for the production of covered tablets by melt calendering in which the melt containing active ingredient is introduced between two sheets of the covering material into the molding rolls.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: April 27, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Joerg Rosenberg, Werner Maier, Sven Grabowski, Jorg Breitenbach
  • Patent number: 5879486
    Abstract: Apparatus and method for producing gypsum board, comprising apparatus for coating a cover sheet with a relatively high density gypsum slurry, apparatus for forming edge borders on the sheet with relatively high density gypsum slurry, and apparatus for forming a core on the coating and between the edge borders, the core comprising a relatively low density gypsum. The apparatus for coating the sheet comprises a relatively soft pressure roll and a relatively hard coating roll, the two rolls being normally pressed together to form a nip between them and a sheet to be coated passing through the nip. The pressure roll is below the sheet and the coating roll, and the axis of the pressure roll is offset from the axis of the coating roll in upstream direction of the movement of the sheet. The pressure roll has a surface area which contacts and moves in the same direction as the sheet, and the coating roll has a surface area which contacts and moves in the opposite direction of the sheet.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: March 9, 1999
    Assignee: National Gypsum Company
    Inventors: John L. Philips, Herman C. Fraley
  • Patent number: 5875530
    Abstract: Fiberglass mesh is tentered by conveying the mesh in sliding relation over counter-rotating heated rollers or oscillating heated bars. The mesh is pulled over the rollers or bars and is slit and tightly wound, all in-line.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: March 2, 1999
    Inventor: Theodore E. Clear
  • Patent number: 5876792
    Abstract: The present invention relates to methods for the controlled placement of a curable, shear thinnable polymer composition into a porous web. The controlled placement is performed by applying tension to the porous web. The polymer composition is applied onto a surface of the web. The composition is shear thinned sufficiently to reduce its viscosity and selectively place it into the tensioned web to encapsulate at least some of the structural elements of the web, leaving most of the interstitial spaces of the porous web open. The invention also relates to methods for selectively placing the polymer composition in a substantially continuous region extending through the web so that the polymer composition fills the interstitial spaces and adheres adjacent structural elements in the region. In the areas in the web above and below the filled region, at least some of the structural elements are encapsulated and most of the interstitial spaces are open.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: March 2, 1999
    Assignee: Nextec Applications, Inc.
    Inventor: J. Michael Caldwell
  • Patent number: 5875538
    Abstract: A method and apparatus for providing a coating on the exterior surfaces of a plurality of elongate members, such as wires, including positioning a plurality of elongate members substantially parallel to each other, coating the exterior surfaces of each member with a coating, removing any excess coating from desired portions of each member and curing the coating to adhere the coating to each member.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: March 2, 1999
    Assignee: Illinois Tool Works Inc.
    Inventors: Frederick A. Kish, Parimal M. Vadhar, Robert W. Wright, William L. Gabriel, Geronimo E. Lat
  • Patent number: 5871810
    Abstract: The invention is a method of plating a nonmetallic substrate comprising the steps of depositing an adhesion enhancing film on the substrate, treating the adhesion enhancing film to make the film catalytic, and forming an outer coating and passivating plate on the adhesion enhancing film. The resulting plated, nonmetallic substrates may comprise any number of materials used as an inner substrate such as compounds of oxide, nitride, phosphide, carbide, glass, ceramic, and mixtures thereof. In use, the resulting substrate may find application in any number of data storage and retrieval application.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: February 16, 1999
    Assignee: International Business Machines Corporation
    Inventors: Steven Francis Starcke, John David Amundson, Douglas Howard Piltingsrud, James Aloysius Hagan
  • Patent number: 5868983
    Abstract: The present invention provides a process for surface finishing sheets made from thermoplastics by applying a partially fused layer of thermoplastic polyurethane.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: February 9, 1999
    Assignee: Bayer Aktiengesellschaft
    Inventors: Herbert Vogl, Jurgen Rohner, Jurgen Hattig
  • Patent number: 5846604
    Abstract: Products and methods for controlling the porosity and permeation of a web are provided using a curable thixotropic shear thinnable polymer composition that preferably encapsulates a plurality of fibers of the web and/or forms an internal layer within the web. Webs suitable for several different uses are featured, for example medical garments resistant to permeation by a virus or bacteria. The effective pore size of the web is controlled by regulating various factors such as the thickness of the polymer composition encapsulating the fibers and the thickness and placement of the internal polymer layer. Other factors include the polymer density, structure, and crosslinking orientation, as well as the diffusion, permeation and sorption of the polymer.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 8, 1998
    Assignee: Nextec Applications, Inc.
    Inventor: James M. Caldwell
  • Patent number: 5827616
    Abstract: A process for manufacturing a material from a greaseproof paper used as support. At least one face of the support is coated with water or at least one aqueous solution. The support thus becomes a pliable support, The surface of the pliable support is treated by depositing one or more pigmented layers on the surface. This treatment improves the qualities of metallization or of printing or of both of the paper, relative to uncoated greaseproof paper. The pliable support thus becomes a pliable coated support. The pliable coated support is then calendared.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: October 27, 1998
    Assignee: Sibille Dalle
    Inventors: Pierre Girard, Jean-Claude Trillat
  • Patent number: 5817398
    Abstract: A method for manufacturing bands of bituminized roofing material, wherein a band of porous carrier material is impregnated with bitumen, wherein the band of porous carrier material is provided on a supporting surface provided with openings, hot bitumen is provided on the side of the band of carrier material remote from the supporting surface, and a pressure difference is created across the supporting surface, so that the hot bitumen penetrates into the carrier material.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: October 6, 1998
    Assignee: Esha Holding B.V.
    Inventor: Jan Hollander
  • Patent number: 5800883
    Abstract: An airbag of an airbag restraint system mounted on an automotive vehicle and adapted to protect a vehicle passenger in a serious vehicle collision. The airbag is formed of front and rear side sheet-like members which are sewn with each other at their peripheral portions to be bag-shaped. Each sheet-like member includes a cloth which is woven with warp and weft yams formed of polyester resin or nylon 6, 6 fibers. The cloth is impregnated with a resinous material including a polyurethane resin adhesive for the fibers, so that the yarns of the sheet-like member are bound with each other thereby effectively preventing fray from occurrence even upon cutting of the sheet-like member.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: September 1, 1998
    Assignees: Ikeda Bussan Co., Ltd., Hamamatsu Industry Co., Ltd.
    Inventor: Tomohiro Koseki
  • Patent number: 5795516
    Abstract: A method for fabricating olefin tarpaulins by treating both sides of a base fabric woven from high strength polyester filaments with a coating composition using an extruder followed by compressing the coated polyester fabrics with a calendering roller. The coating composition is obtained by dry-blending or melt-blending LLDPE (linear low density polyethylene) or LDPE (low density polyethylene) in an amount of 15.about.94.5% by weight with an elastomer of ethylene-.alpha.-olefin co-polymer of 5.about.60% by weight which are (i) ethylene propylene rubbers or (ii) co-polymers of ethylene and octene or butene; coloring master batch chip in an amount of 0.5.about.15% by weight obtained by mixing LLDPE or LDPE with pigments or titanium dioxide; and adhesion-preventing master batch chip of 0.about.10% by weight obtained by mixing LLDPE or LDPE with silica or calcium carbonate.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: August 18, 1998
    Assignee: Kolon Industries, Inc.
    Inventors: Suh H. Cho, Il Y. Kim, Chung S. Kang, Chang B. Jung, Hae J. Lee, Il Y. Jung, Chang G. Kim
  • Patent number: 5792513
    Abstract: One or more particulate active agents are fused to the surface of a substrate web by mixing the particulate agents with a particulate binder having a particle size not exceeding an average diameter of approximately 40 microns and coating the composite mixture onto the surface of the substrate. Thereafter, the coated substrate is heated to a temperature equal to or greater than the Vicat softening temperature of the binder and compressed within the nip of a pair of pressure rolls to achieve fusion. If desired, a top layer may be placed upon the coated composite prior to the compression step. Also disclosed are various products manufactured by the process.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: August 11, 1998
    Assignee: Koslow Technologies Corporation
    Inventors: Evan E. Koslow, Richard D. Kendrick, Gordon Spilkin
  • Patent number: 5789326
    Abstract: A binder is applied to fibers to bind particles to the fibers. The fibers have hydrogen bonding functional groups. The particles have functional groups capable of forming a hydrogen bond or a coordinate covalent bond. The binder comprises binder molecules, the binder molecules having at least one functional group that is capable of forming a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that is capable of forming a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: August 4, 1998
    Assignee: Weyerhaeuser Company
    Inventors: Michael R. Hansen, Richard H. Young, Sr.
  • Patent number: 5789031
    Abstract: A process for manufacturing a coated paper for use in printing is characterized in that the coated paper for printing is produced by coating a color consisting mainly of pigment and a water-soluble binder made of starch or starch derivatives to the surface of a base paper, then drying and finishing it. Steam or an aqueous penetrant solution having a penetrating force of less than 50 seconds is sprayed or applied over the dry coated layer surface of the coated paper, prior to it being finished with a calender, for redistributing the water-soluble binder in the coated layer in order to correct its uneven distribution, which is the cause of printing mottle during the offset printing operation.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: August 4, 1998
    Assignee: Oji Paper Co., Ltd.
    Inventors: Tetsuya Hirabayashi, Hideyuki Suzuki, Terunobu Fukui
  • Patent number: 5762999
    Abstract: A process for producing a magnetic recording medium comprising applying a magnetic coating composition to a substrate to form a magnetic layer and subjecting the coated substrate to calendering, wherein the elastic roll used in the calendering has a water absorption of 0.1 to 5% by weight per unit volume and a Shore hardness of not less than 90, and the magnetic layer immediately before being calendered has a residual solvent content of 100 to 5000 ppm.
    Type: Grant
    Filed: July 7, 1997
    Date of Patent: June 9, 1998
    Assignee: Kao Corporation
    Inventors: Masayuki Okawa, Masayasu Sato
  • Patent number: 5747110
    Abstract: A method of coating porous webs wherein porous materials having a range of pore sizes are given desired characteristics by selective depostion in the large pores of particulate treatment agents. Thus some characteristics are achievable by control variation of pore size distribution (e.g. sample, uniformity, liquid filtration properties) while others depend on specific attributes of the treatment agents (e.g. response to calendaring, catalysis, security marking adhesion properties).
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: May 5, 1998
    Assignee: Bowater Packaging Limited
    Inventors: Alan Tallentire, Colin Samuel Sinclair
  • Patent number: 5731040
    Abstract: A method for manufacturing gasket material where a metal plate is coated with a compound that includes a compressible inorganic fiber, other than asbestos, a compressible organic fiber, and rubber and an inorganic filler. In forming the gasket material, the metal plate is coated with a heat resistant adhesive. The metal plate is then inserted between first and second metal rollers that are arranged adjacent and parallel to each other, rotate at different circumferential speeds to one another and in opposite directions, and heat resistant adhesive layer applied over the metal plate is opposed by the first roller. In which rolling, the compound with a solvent mixed therein is supplied to between the metal plate and the first roller that is turned at a circumferential speed that is slower than that of the second roller.
    Type: Grant
    Filed: January 13, 1997
    Date of Patent: March 24, 1998
    Inventor: Hiroaki Akita
  • Patent number: 5728424
    Abstract: A system for forming a textured surface on a geomembrane including a support surface, a first set of rollers for passing the geomembrane onto the support surface such that a surface of the geomembrane faces upwardly, a heater positioned in proximity to the surface of the geomembrane so as to heat the geomembrane to a desired elevated temperature, a particle distributer positioned above the geomembrane so as to pass solid particles onto the surface of the geomembrane in a desired particle distribution. The particles can have a desired size and geometry as they are passed onto the surface of the geomembrane. A second set of rollers is positioned adjacent to the port surface so as to receive the geomembrane after the particles have been distributed thereon. The heater includes a preheater positioned on one side of the particle distributor and a postheater positioned on an opposite side of the particle distributor.
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: March 17, 1998
    Assignee: GSE Lining Technology, Inc.
    Inventor: Walter W. Walling
  • Patent number: 5702765
    Abstract: A method and apparatus for applying coating liquid to a web of paper traveling over a web supporting surface at speeds of 3,000 or more feet per minute to produce a coated web free of streaking and other imperfections includes the steps and structural elements for distributing coating liquid onto the supported web through a limited application zone within a short dwell time of the liquid on the web, the web moving through the application zone at a speed that is sufficiently high to create turbulence in the coating liquid being applied to the web, doctoring the coating liquid on the web by biasing a primary doctor against the coated web at the rear edge of the application zone so as to form a layer of coating liquid on the web as the web leaves the application zone, the turbulence in the coating liquid causing machine direction streaks in the layer of the coating liquid as the web leaves the application zone; and, at a location downstream and isolated from the application zone, performing a successive doctorin
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 30, 1997
    Assignee: Consolidated Papers, Inc.
    Inventors: Wayne A. Damrau, Michael A. Mayer
  • Patent number: 5681618
    Abstract: A method of and apparatus for applying coating liquid to a web of paper traveling over a web supporting surface at speeds of 3,000, 4,000 and more feet per minute to produce a coated web free of streaking and other imperfections comprises apparatus for and the sequential steps of distributing coating liquid in a turbulent state over the supported web through a limited application zone within a very short dwell time of the turbulent liquid on the web; subjecting the coating liquid on the supported web to an initial doctoring by means of a primary doctor blade biased under pressure against the coated web at the rear edge of the application zone to form on the web downstream from the zone a relatively quiescent layer of coating liquid having a wet film thickness sufficiently in excess of the final wet film thickness to accommodate a subsequent final wet film doctoring of the coating liquid on the web; and, at a location downstream and isolated from the application zone, subjecting the relatively quiescent layer
    Type: Grant
    Filed: June 15, 1994
    Date of Patent: October 28, 1997
    Assignee: Consolidated Papers, Inc.
    Inventors: Wayne A. Damrau, Michael A. Mayer
  • Patent number: 5674659
    Abstract: Provided is a method for producing a photoresist film for use in producing a a precision fine process component capable of achieving removal of moisture component and film formation by heating in a short time, forming a resist film having a resolution much finer than that of the conventional method, and easily drying a thin board. The resist film obtained through the electrodeposition coating process is roll-pressed by pressure rolls with heat applied to the film.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: October 7, 1997
    Assignee: Nippon Paint Co., Ltd.
    Inventors: Seiichi Matsuo, Kouichi Nagata, Shigeharu Tanaka, Makoto Shimizu
  • Patent number: 5616366
    Abstract: In a new process for making an electrode current collector assembly, an electrode composition is mixed with a volatile casting solvent and is coated onto a substrate. Then, the coated substrate is heated to drive off a major portion of the volatile casting solvent. Next, force is applied on an external surface of the coating and directed toward the substrate so as to compact the coating and reduce the volume of pore spaces in the coating. An electrolyte composition may be applied to the compacted electrode composition either before or after curing. The electrode and electrolyte compositions are each cured. In a final step, a counter-electrode layer is applied onto the electrolyte composition to form a cell assembly.
    Type: Grant
    Filed: January 23, 1996
    Date of Patent: April 1, 1997
    Assignee: Valence Technology, Inc.
    Inventors: Ib I. Olsen, Gert L. Jensen
  • Patent number: 5589256
    Abstract: A method of producing easily densified high bulk fibers that have adhered particulates. The high bulk fibers have hydrogen bonding or coordinate covalent bonding functionalities, and a binder is applied to the fibers to bind the particles to the fibers. The binder has a functional group that forms a hydrogen bond or a coordinate covalent bond with the particles, and a functional group that forms a hydrogen bond with the fibers. A substantial portion of the particles that are adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder is in turn adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: December 31, 1996
    Assignee: Weyerhaeuser Company
    Inventors: Michael R. Hansen, Richard H. Young, Sr.
  • Patent number: 5571364
    Abstract: A process is described for the perparation of radiation image storage panels. The process includes forming a phosphor sheet from stimulable phosphor and a thermoplastic elastomer binder, the binder having a softening point of 30.degree. to 300.degree. C. The phosphor sheet is then heated on a support and subsequently compressed by a calender roll under heating. The sheet during compression is maintained at or heated to a temperature not lower than the softening point of the binder so as to fix the phosphor sheet on the support.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: November 5, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hideki Suzuki, Katsuhiro Kohda
  • Patent number: 5571563
    Abstract: A nip roll presses a hot, rapidly moving, endless printed and dried paper web into intimate contact with the exterior surface of a first downstream chill roll so as to improve the cooling efficiency of the first downstream chill roll, permit the use of fewer chill rolls, and prevent condensate streaking. The nip roll is specially designed to press the web into intimate contact with the first downstream chill roll while avoiding damage to the web, nip roll, or chill roll, and while avoiding ink picking on the web surface contacted by the nip roll. The nip roll has an elastomeric outer peripheral surface and is internally cooled so as to maintain the outer peripheral surface at an equilibrium temperature below that at which ink softening and resultant picking could occur. By eliminating concerns of condensate streaking, the nip roll also permits dryer operation at relatively low temperatures, thereby substantially reducing operating costs.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: November 5, 1996
    Assignee: Advance Systems, Inc.
    Inventors: Randall D. Helms, Daniel J. Hansen
  • Patent number: 5558916
    Abstract: This invention relates to methods for making a carpet having a secondary backing which is substantially impervious to liquids. The methods involve applying a repellent finish onto the secondary backing material and drying the finish. The finish may be applied as foam to the secondary backing, against the force of gravity, by means of a press roll. This invention also includes the resultant carpets prepared from these methods.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: September 24, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William W. Heim, James K. Hendrix, Joyce M. Materniak, Peter M. Murphy, Neil A. Panzier, Yashavant V. Vinod