Including Solid Non-waterlaid Preform Patents (Class 162/103)
  • Patent number: 9675990
    Abstract: A method of controlling a process for the manufacture of a multicomponent sheet material having a desired pre-determined parameter comprising applying an acoustic or an electromagnetic signal to interact with the sheet material whereby the interaction modifies the applied signal, detecting the modified signal, comparing the modified signal or data derived from it with data relating to the pre-determined parameter and modifying at least one step of the process whereby the data relating to the modified signal is modified towards the data relating to the pre-determined parameter.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: June 13, 2017
    Assignee: Hexcel Composites Limited
    Inventors: John Ellis, Andrea Caballero
  • Patent number: 9243366
    Abstract: A method includes manufacturing a sheet-type substrate having a security thread in which a security thread having features spaced apart from one another in the longitudinal direction of the security thread is inserted into the substrate in such a way that it is at least partially embedded in the substrate. At least one of the features is displayed as an image after the embedding of the security thread. The stretch of the embedded security thread in the longitudinal direction is calculated based on the image of the at least one feature, and the region of the substrate in which the calculated stretch of the security thread exceeds a specified maximum stretch is obliterated depending on the calculated stretch.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: January 26, 2016
    Assignee: GIESECKE & DEVRIENT GMBH
    Inventors: Andreas Pretsch, Bernhard Wiedner, Manfred Heim, Michael Dornfeld, Johannes Kemper, Johannes Beier
  • Patent number: 9050777
    Abstract: The present invention is directed to a nonwoven fabric made from a composite of nonwoven and pulp where the nonwoven has a high loft derived from a heat set three-dimensional relief structure and/or hydroengorged fiber structure. A nonwoven web is hydraulically treated to create a hydroengorged material having an increased loft. Alternatively a nonwoven web is treated to have a heat set three-dimensional relief structure. The treated web is then hydroentangled with pulp to form a cotendered nonwoven/pulp composite fabric.
    Type: Grant
    Filed: April 10, 2007
    Date of Patent: June 9, 2015
    Assignee: FIRST QUALITY NONWOVENS, INC.
    Inventors: Michael Kauschke, Mordechai Turi
  • Patent number: 8679294
    Abstract: Expandable microspheres formed by suspension polymerization using a shot growth method are provided. The microspheres are formed of a continuous, gas impermeable shell surrounding a blowing agent. The shell includes a first polymer layer formed from primary monomers and a second layer that includes a chemically reactive monomer or a high Tg monomer. To form the microspheres, the primary monomers are polymerized in a reaction vessel to an approximate 90% polymerization, at which time a secondary monomer that is either a monomer having a Tg of at least 85° C. or a chemically reactive monomer, is added to the reaction vessel to drive the polymerization reaction to completion. The outer layer thus contains either a larger amount of the high Tg monomer or a chemically reactive monomer that possesses the ability to covalently bond a cationic species. The microspheres may be used in papermaking processes to increase the paper bulk.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: March 25, 2014
    Assignee: International Paper Company
    Inventors: Yaoliang Hong, Kosaraju Krishna Mohan, Victoria Laurentia Dimonie, Mark Edward Fagan, Andrew Klein, Eric Scott Daniels, Brian Boyars, Peter M. Froass, Christopher D. Anderson, Edward David Sudol
  • Patent number: 8445392
    Abstract: The invention concerns a sheet material, characterized in that it incorporates at least one knitted structure. The invention also concerns a document and a base fabric comprising said sheet material, as well as a method for making said material. The invention further concerns a knitted structure comprising at least one authenticating and/or identifying element, as well as a method for authenticating and/or identifying a document or a knitted structure.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: May 21, 2013
    Assignees: Arjowiggins, Arjowiggins Security
    Inventors: Henri Rosset, Sebastien Charignon, Pierre Doublet
  • Patent number: 8409705
    Abstract: Fibers having a plurality of colored regions printed on front and rear sides of said fiber are disclosed, wherein the colors are visible only under ultra-violet light. The regions may be in the form of stripes or may be arranged in a pseudo-random pattern. The regions may be differently colored. Such fibers can be incorporated into paper products as a form of counterfeit protection.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: April 2, 2013
    Assignee: D.W. Spinks (Embossing) Ltd.
    Inventor: Gary D Spinks
  • Patent number: 8382945
    Abstract: Expandable microspheres formed by suspension polymerization using a shot growth method are provided. The microspheres are formed of a continuous, gas impermeable shell surrounding a blowing agent. The shell includes a first polymer layer formed from primary monomers and a second layer that includes a chemically reactive monomer or a high Tg monomer. To form the microspheres, the primary monomers are polymerized in a reaction vessel to an approximate 90% polymerization, at which time a secondary monomer that is either a monomer having a Tg of at least 85° C. or a chemically reactive monomer, is added to the reaction vessel to drive the polymerization reaction to completion. The outer layer thus contains either a larger amount of the high Tg monomer or a chemically reactive monomer that possesses the ability to covalently bond a cationic species. The microspheres may be used in papermaking processes to increase the paper bulk.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: February 26, 2013
    Assignee: International Paper Company
    Inventors: Yaoliang Hong, Kosaraju Krishna Mohan, Peter M. Froass, Mark Fagan, Christopher D. Anderson, Brian Boyars, Eric Scott Daniels, Victoria Laurentia Dimonie, Edward David Sudol, Andrew Klein
  • Patent number: 8376409
    Abstract: The present invention relates to a security film comprising a fibrous substrate incorporated at least partially in which is a security strip that comprises at least one security element and that extends between two edges of said fibrous substrate, said security strip being made of paper and comprising an adhesive.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: February 19, 2013
    Assignee: Arjowiggins Security
    Inventor: Henri Rosset
  • Patent number: 8317978
    Abstract: A method of fabricating a non-brittle, carbon nanopaper from single wall, multiwall, and combination thereof, from carbon nanotubes, using a vacuum deposition, high temperature annealing, and polystyrene polymer rinse process; which nanopaper can be nitrided by either a plasma-enhanced chemical vapor deposition (PECVD) process, or an by an electrochemical method, to obtain a useful chemically functionalized substrate, a substrate containing metastable N4, N8, and longer chain polymeric nitrogen clusters. Such nitrided carbon nanopaper can be used to enhance the ballistic performance of gun propellants, while reducing gun barrel wear and erosion thereof.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: November 27, 2012
    Inventors: Thelma G. Manning, Zafar Iqbal
  • Patent number: 8158253
    Abstract: Fibers (2, 14) having a plurality of colored regions printed on front and rear sides of said fiber are disclosed, wherein the colors are visible only under ultra-violet light. The regions may be in the form of stripes (4, 6, 8, 10 and 12) or may be arranged is a pseudo-random pattern (16, 18, 20, 22, 24). The regions may be differently colored. Such fibers can be incorporated into paper products as a form of counterfeit protection.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: April 17, 2012
    Assignee: D W Spinks (Embossing) Ltd.
    Inventor: Gary D. Spinks
  • Patent number: 8083894
    Abstract: The present invention relates to a method for manufacturing a security paper, for security or value documents, that exhibits at least one through opening (12) having characteristic irregularities (14) in the edge region. According to the present invention, a paper web having thin sites in the form of the outline of the desired shape of the at least one through opening (12) is formed on a paper mold, and the paper web dewatered after sheet formation, the region delimited by the thin sites being removed from the paper web by the occurring forces.
    Type: Grant
    Filed: July 3, 2006
    Date of Patent: December 27, 2011
    Assignee: Giesecke & Devrient GmbH
    Inventors: Uwe Gruszczynski, Thomas Bodendieck
  • Patent number: 7425245
    Abstract: This invention is directed to improvements in fibrous sheets, such as paper, incorporating an elongate impermeable element, to a method of making such paper and to documents made therefrom. The method comprises the steps of bringing an elongate flexible element into contact with a moving support surface, and depositing fibers onto the support surface to form a fibrous sheet which travels in a machine direction. The said support surface has spaced portions which prevent the substantial deposition of fibers at those portions and form windows at spaced locations in at least one surface of the sheet. The deposition of fibers is carried out in such a manner that as fibers are deposited onto the support surface the elongate element is incorporated in the sheet with regions of the element at least partially exposed at at least one surface of the sheet at said windows. At least a leading edge of the spaced portions is at an angle, in the plane of the sheet, which is not 90° to the machine direction.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: September 16, 2008
    Assignee: De La Rue International Limited
    Inventor: Anthony James Waters
  • Patent number: 7422660
    Abstract: Method of producing a nonwoven material, includes forming a web of continuous filaments on a forming member (12) and applying a wet- or foam formed fiber dispersion containing natural fibers and/or synthetic staple fibers on top of the continuous filaments. A fibrous web is thus formed containing continuous filaments and natural fibers and/or synthetic staple fibers, this web subsequently being hydroentangled to form a nonwoven material. Moisture is applied to the web of continuous filaments under a low pressure before laying the wet- or foam formed fiber dispersion on the web of continuous filaments, avoiding any substantial bonding between the filaments in the web.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: September 9, 2008
    Assignee: SCA Hygiene Products AB
    Inventors: Tomas Billgren, Mats Soderberg, Mees Versteeg, Hein Lindstedt
  • Patent number: 7399379
    Abstract: The present invention relates to a sheet structure for electrical insulation or flame resistance comprising a barrier ply having a mica-rich face and a mica-poor face and a reinforcing ply containing a saturable backing layer attached to the mica-poor face of the barrier ply.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: July 15, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mikhail R. Levit, Laurence N. Bascom
  • Publication number: 20080149285
    Abstract: This invention is directed to a method of reducing the water demand of expanded perlite that includes obtaining a vibrating screen supported at an angle and placing expanded perlite on the vibrating screen. The expanded perlite is moved over the screen past toward a burner at a rate that heats the expanded perlite to a temperature sufficient to anneal it. The expanded perlite is then moved away from the burner and allowed to cool. Another embodiment of this invention is directed to a method of making a gypsum product. The method includes annealing perlite by the method described above, then preparing a slurry of calcium sulfate hemihydrate, additives, water and the annealed perlite. The slurry is formed into the shape of the gypsum product and allowed to set. This process is particularly useful in making gypsum panels and acoustical panels that benefit from the use of lightweight materials.
    Type: Application
    Filed: December 21, 2006
    Publication date: June 26, 2008
    Inventor: Christopher R. Nelson
  • Publication number: 20080006378
    Abstract: A multi-ply paper tissue includes at least one ply formed of LDPE/HDPE. The LDPE/HDPE ply is thermally bonded to the other ply or plys of the tissue.
    Type: Application
    Filed: July 6, 2006
    Publication date: January 10, 2008
    Inventor: Antonio N. Maciel
  • Patent number: 6784126
    Abstract: A high pulp content nonwoven composite fabric is disclosed. The composite fabric contains 1) from more than about 0 to less than about 30 percent, by weight, of a nonwoven layer of conjugate spun filaments, the filaments containing at least one low-softening point component and at least one high-softening point component and having at least some exterior surfaces of the filaments composed of at least one low-softening point component; 2) more than about 70 percent, by weight, of pulp fibers; and 3) regions in which the low-softening point component at the exterior surfaces of the filaments is fused to at least a portion of the fibrous component. This high pulp content composite nonwoven fabric may be used as a heavy duty wiper or as a fluid distribution material, cover material, and/or absorbent material in an absorbent personal care product. Also disclosed is a method of making the high pulp content nonwoven composite fabric.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: August 31, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Cherie Hartman Everhart, Danial Owen Fischer
  • Patent number: 6616803
    Abstract: This invention is directed to improvements in paper incorporating an elongate impermeable element, to a method of making such paper and to documents made therefrom.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: September 9, 2003
    Assignee: De la Rue International Limited
    Inventors: Roland Isherwood, Stephen David Ridyard
  • Patent number: 6592713
    Abstract: Method for producing a nonwoven material comprising at least one layer of continuous filaments, such as spunbond- or meltblown fibers. A first web of continuous filaments (19) are laid on a wire (14) or other permeable support member having a resilient extensibility in the transverse direction and which substantially resumes its original dimension when the extension is discontinued, that the wire is stretched in the transverse direction to at least 120% of its original width when the continuous filaments are laid on the wire. The stretching is discontinued after the continuous filaments have been laid on the wire.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: July 15, 2003
    Assignee: SCA Hygiene Products AB
    Inventor: Hannu Ahoniemi
  • Patent number: 6485608
    Abstract: The bearing comprises a metal backing, a sintered layer on said metal backing, and a lining layer infiltrated into pores of the sintered layer and standing proud thereof to provide a bearing surface. The lining layer comprises polytetrafluoroethylene including 2 to 10% by volume of fibrillated aramid fibres.
    Type: Grant
    Filed: December 17, 1999
    Date of Patent: November 26, 2002
    Assignee: Glacier Garlock Bearings, Inc.
    Inventors: Julie Ann McDonald, John Edward Wheatley, Anthony Latkowski, David Geoffrey Hall
  • Patent number: 6425977
    Abstract: A method of manufacturing a bearing material, a bearing material and a bearing having the bearing material on a strong backing are described.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: July 30, 2002
    Assignee: Glacier Garlock Bearings, Inc.
    Inventors: Julie Ann McDonald, John Edward Wheatley, Anthony Latkowski, David Geoffrey Hall
  • Patent number: 6402888
    Abstract: A method for making a paper sheet comprising at least one region which is thinner than the rest of the sheet. According to the method, a first paper layer (3) is formed on a wire in a first wet end of a paper-making machine, a second paper layer (5) is formed on a wire in a second wet end of the paper-making machine, one of the two paper layers has a number of localized tinner regions (8) so that the thickness (e2) of said paper layers in said regions is up to 50% less than the thickness (et) of the rest of the sheet, and the two layers are joined together and dried. The resulting paper may be used in banknotes or checks.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: June 11, 2002
    Assignee: Arjo Wiggins
    Inventors: Pierre Doublet, Yves Douesneau, Jean-Paul Menez
  • Patent number: 6355140
    Abstract: A method of manufacturing a thread-inserted window paper produces paper in which a thread is exposed to windows which are intermittently formed, and have clear contours, and in which thread is exposed surely at the window portions to make the thread clearly recognizable visually. The method is capable of being carried out with a relatively simple apparatus. Wet paper (1) in which a thread (T) is embedded in the paper layer is guided while being in intimate contact with a center roll (3) having protrusions (2) arranged on the surface thereof intermittently at a predetermined distance, the surface of the wet paper on the protrusions is frictionally rubbed by a friction roll (4) thereby moving fibers at the surface of the wet paper on the protrusions to form exposed portions of the thread intermittently on the surface of the wet paper and the wet paper is then dried by a customary method.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: March 12, 2002
    Assignee: Tokushu Paper Mfg. Co., Ltd.
    Inventors: Toru Murakami, Masaaki Suyama
  • Patent number: 6348133
    Abstract: A smooth-textured non-woven, superabsorbent particle-impregnated fibrous structure is disclosed. The web exhibits an improved smooth surface texture. The structure contains from 50% to 80% of ion sensitive SAP having a particle size of less than 200 microns, wood pulp fibers and cellulose acetate fibers, each in preferred specified amounts indicated herein. The superabsorbent, ion sensitive polymer particle-impregnated fibrous structure is made from an aqueous, wet-lay process in which an aqueous furnish comprises solids of fibers and superabsorbent, ion sensitive polymer and dissolved salt, such as preferably, Na2SO4. The furnish is passed over a moving foraminous support, such as a Fourdrinier wire, and a wet web structure is formed, followed by drying.
    Type: Grant
    Filed: August 3, 2001
    Date of Patent: February 19, 2002
    Assignee: BASF Corporation
    Inventor: G. Thomas Woodrum
  • Patent number: 6035914
    Abstract: Fluorescent dichroic fibers randomly incorporated within a media provide an improved method for authentication and counterfeiting protection. The dichroism is provided by an alignment of fluorescent molecules along the length of the fibers. The fluorescent fibers provide an authentication mechanism of varying levels of capability. The authentication signature depends on four parameters; the x,y position, the dichroism and the local environment. The availability of so many non-deterministic variables makes production of counterfeit articles (e.g., currency, credit cards, etc.) essentially impossible. Counterfeit-resistant articles, an apparatus for authenticating articles, and a process for forming counterfeit-resistant media are also provided.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: March 14, 2000
    Assignee: Martin Marietta Energy Systems Inc.
    Inventors: J. Michael Ramsey, Leon N. Klatt
  • Patent number: 6030497
    Abstract: A multi-ply paper web comprises a base ply of a post-manufactured sheet such as reused old newsprint or reused office waste. An upper and/or lower ply bonded to the base ply covers any printing or contamination of the base ply, thus allowing the resulting web to be reprinted or used for writing or packaging grades. The base ply is not repulped, reducing water and energy usage in the manufacturing process. The upper and lower plies may be wet formed or dry formed. Dry-formed upper and/or lower plies result in a paper product utilizing little or no water in the manufacturing process, and no aqueous effluent. The post-manufactured base ply provides the strength ply. Multiple layers in the base ply or, alternatively, a contrast-reducing process on printed surfaces of the base ply, reduce show through of the final web.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: February 29, 2000
    Inventor: Kenneth S. Watkins, Jr.
  • Patent number: 5989389
    Abstract: The invention relates to a method of producing visible, preferably transparent or translucent, continuous streaks and/or delimited fields in paper in conjunction with forming a paper web in a paper machine. The method is characterized by essentially preventing dewatering of paper stock/paper fibres on one or more surfaces of a wire in the forming unit of a paper machine in conjunction with forming a paper web in the machine, and by applying a special stock that contains fibres which differ from the other fibre material deposited on the wire, optionally together with an arbitrary filler and/or binder. The invention also relates to a valuable document, such as a banknote, produced from the aforedescribed paper.
    Type: Grant
    Filed: June 9, 1995
    Date of Patent: November 23, 1999
    Assignee: AB Tumba Bruk
    Inventor: Tore Sundberg
  • Patent number: 5928472
    Abstract: A multiply paper web comprises a base ply of a post-manufactured sheet such as reused old newsprint or reused office waste. An upper and/or lower ply is bonded to the base ply to cover any printing or contamination of the base ply, thus allowing the resulting web to be reprinted or used for writing or packaging grades. The base ply is not repulped, reducing water and energy usage in the manufacturing process. The upper and lower plies may be wet formed or dry formed. Dry formed upper and/or lower plies result in a paper product utilizing little or no water in the manufacturing process, and no aqueous effluent. The post-manufactured base ply provides the strength ply.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: July 27, 1999
    Inventor: Kenneth S. Watkins
  • Patent number: 5795377
    Abstract: Papermaking sludge can be modified to a modeling clay-like consistency by the addition of one or more dispersing agents, such as polyacrylamide. The modified papermaking sludge can be formed into a number of useful products, such as paper sheets or extruded products.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: August 18, 1998
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James Jay Tanner, David Henry Hollenberg
  • Patent number: 5744000
    Abstract: The invention is concerned with the production of filaments or fibers each of which carries a recognizable "signature" (encoding). These filaments or fibers are produced by taking a film (preferably a plastics film) applying a code directly onto the film across the effective width of the film and then dividing the film substantially at right angles to the code into longitudinal filaments, so that the encoding is then present in each of the filament in exactly the same "signature" as in the code applied to the film.
    Type: Grant
    Filed: May 23, 1996
    Date of Patent: April 28, 1998
    Inventors: Graham Athey, James Zorab
  • Patent number: 5718786
    Abstract: An oriented strand board (OSB)-fiberboard composite structure is comprised of a baseboard having three wood strand layers, the wood strands being oriented in space with respect to a board forming machine such that a core layer is comprised of wood strands oriented generally in a random or cross-machine direction and each adjacent layer is comprised of coarse and fine wood strands oriented generally in the machine direction. In a preferred embodiment, the wood strands comprising each adjacent OSB layer are formed with the coarsest strands located nearest the core layer and the finest strands are located nearest the outer surfaces of each outer board layer. The OSB-fiberboard composite product is clad with a wood fiber overlay on one major surface of the baseboard. The composite board is manufactured without warping, by providing particular OSB layer thicknesses, such that the lower OSB layer is about 25% to about 35% thicker than the OSB layer bonded to the fiberboard.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: February 17, 1998
    Assignee: Masonite Corporation
    Inventors: Craig R. Lindquist, John T. Clarke, Peter P.S. Chin, Michael J. MacDonald, J. Peter Walsh
  • Patent number: 5567276
    Abstract: The present invention relates to a paper of value having an embedded security element, preferably an optically variable element in the form of hologram, diffraction or interference structures applied to the paper surface, and to a method for producing such a paper of value. The paper of value is characterized by the fact that the optically variable element is embedded in the paper of value with the paper surface forming a plane that is even with the surface of the optically variable element.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: October 22, 1996
    Assignee: GAO Gesellschaft fuer Automation und Organisation mbH
    Inventors: Michael Boehm, Wittich Kaule
  • Patent number: 5405500
    Abstract: This invention relates to a method of making sheet materials and security paper having partially embedded therein an elongate security element which is at least substantially exposed at one surface of the sheet at a plurality of spaced locations, which method comprises the steps of depositing fibres onto a moving support surface, supplying an elongate security element to overlie rotatable embedment means, which embedment means comprise a plurality of spaced-apart raised portions having recesses therebetween, introducing the security element into the fibres with rotation of the embedment means such that some fibres move into said recesses between the security element and the embedment means so that said security element is covered by fibres, and substantially preventing fibres from penetrating between the raised portions and the overlying security element.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: April 11, 1995
    Assignee: Portals Limited
    Inventor: Malcolm R. M. Knight
  • Patent number: 5389202
    Abstract: A high pulp content nonwoven composite fabric is disclosed. The composite fabric contains more than about 70 percent, by weight, pulp fibers which are hydraulically entangled into a continuous filament substrate. This high pulp content composite nonwoven fabric may be used as a heavy duty wiper or as a fluid distribution material, cover material, and/or absorbent material in an absorbent personal care product. Also disclosed is a method of making the high pulp content nonwoven composite fabric.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: February 14, 1995
    Assignee: Kimberly-Clark Corporation
    Inventors: Cherie H. Everhart, Daniel O. Fischer, Fred R. Radwanski, Henry Skoog
  • Patent number: 5368695
    Abstract: An acoustic diaphragm employed in a speaker or the like and a method for producing the acoustic diaphragm are disclosed. A diaphragm substrate is a diaphragm exhibiting air permeability, such as a paper diaphragm. The substrate is processed with filling by microfibrillated pulp. For filling, the substrate is immersed in the liquid dispersion of the microfibrillated pulp and the pulp is deposited on the substrate under suction. When the microfibrillated pulp is deposited on the substrate under suction, any voids present in the substrate are closed by the microfibrillated pulp so that air tightness is improved without lowering the sound quality or detracting from desirable properties of the diaphragm, such as low density, high toughness and low losses.
    Type: Grant
    Filed: March 11, 1993
    Date of Patent: November 29, 1994
    Assignee: Sony Corporation
    Inventor: Masaru Uryu
  • Patent number: 5161829
    Abstract: A security paper includes at least two layers of paper each having inner and outer surfaces and predetermined mechanical properties, color and optical density. Authentication indicia is printed on the inner surface of at least one layer. The indicia is formed of a chemically, mechanically and thermally stable medium having a predetermined color, color intensity and optical density. A chemically, mechanically and thermally stable adhesive permanently adheres the inner surfaces of the layers together. The adhesive has a predetermined color and optical density. The color and optical density of the layers, the color, color intensity and optical density of the medium and the color and optical density of the adhesive combine to render the authentication indicia detectable in transmitted light and substantially imperceptible in reflected light.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: November 10, 1992
    Assignee: James River Corporation of Virginia
    Inventors: Richard W. Detrick, Robert Patterson, Kim W. Robinson
  • Patent number: 5055160
    Abstract: A hybrid band that includes rigid segments into a paper web being formed in a paper manufacturing process. The band includes a carrier that has an adhesive surface for mounting the rigid segments thereon and spacing filler material between contiguous rigid segments for keep them in place. A jacket is formed over the combination that comprises the carrier, segments and filler material. The resulting hybrid band is prestretched prior to its insertion in a paper web being formed in order to compensate for the subsequent shrinkage of the paper web thereby accomplishing the proper and exact positioning of the segments on said paper web.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: October 8, 1991
    Assignee: Fabrica Nacional de Moneda Y Timbre
    Inventor: Felipe Gutierrez
  • Patent number: 5020581
    Abstract: A process for inserting rigid segments into a paper web being formed in a paper manufacturing process that includes the use of a paper forming screen roll, including the steps of cutting segments from a continuous rigid wire material and placing the rigid segments on a continuous strip of an adhesive carrier and placing elastic filler between the rigid segments placed on the carrier, forming a continuous elastic jacket covering the rigid segments and the filler means thereby forming a hybrid band. Through tensioning, the hybrid band is pre-stressed before feeding the pre-stressed hybrid band to the paper forming screen roll, sensing the position of the hybrid band on the paper forming screen roll, sensing the position of the hybrid band on the paper web, and regulating and controlling the positioning of the hybrid band through the adjustment of the tensioning in accordance with the position of the hybrid band in the paper web.
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: June 4, 1991
    Assignee: Charlesworth Overseas Limited
    Inventor: Felipe Gutierrez
  • Patent number: 4990405
    Abstract: Sheets and laminated composites are described which are prepared with epoxy and flocculated vermiculite and mica dispersions. Processes and procedures are also described to obtain film and sheet materials from the flocculated silicate and epoxy dispersions.
    Type: Grant
    Filed: April 14, 1989
    Date of Patent: February 5, 1991
    Assignee: Armstrong World Industries, Inc.
    Inventors: Walter J. Bohrn, Shelly N. Garman, Thomas M. Tymon
  • Patent number: 4941947
    Abstract: A bonded composite sheet comprising a layer of flash-spun polyethylene plexifilamentary film-fibril strand sheet in face-to-face contact with a layer of polyethylene synthetic pulp is highly suited for detailed printing thereon.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: July 17, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph R. Guckert, Hyun S. Lim
  • Patent number: 4877484
    Abstract: Disclosed are flocced mineral materials which may be utilized to prepare high temperature resistant, water resistant articles. These materials are prepared by utilizing, as a starting material, a gellable layered swelled silicate that has an average charge per structural unit that ranges from about -0.4 to -1 and which contains interstitial cations which promote swelling with a source of at least one species of multi-amine derived cations.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: October 31, 1989
    Assignee: Armstrong World Industries, Inc.
    Inventors: Walter J. Bohrn, Richard A. Brubaker, Shelly N. Garman, Lewis K. Hosfeld, Kenneth K. Ko, Thomas M. Tymon
  • Patent number: 4761205
    Abstract: Security devices in the form of metalized plastic films are incorporated within a security paper such as banknotes and other valuable documents during the papermaking process for viewing solely by means of transmitted light. The devices comprise printing of extreme fine line clarity and high opacity such that legibility is possible by means of transmitted light while remaining completely indiscernable under reflected light.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: August 2, 1988
    Assignee: Crane & Co.
    Inventor: Timothy T. Crane
  • Patent number: 4652015
    Abstract: Security devices in the form of metalized plastic films are incorporated within a security paper such as banknotes and other valuable documents during the papermaking process for viewing solely by means of transmitted light. The devices comprise printing of extreme fine line clarity and high opacity such that legibility is possible by means of transmitted light while remaining completely indiscernable under reflected light.
    Type: Grant
    Filed: December 5, 1985
    Date of Patent: March 24, 1987
    Assignee: Crane Company
    Inventor: Timothy T. Crane
  • Patent number: 4606805
    Abstract: A method for making an electrolyte permeable diaphragm, and the diaphragm thus produced, wherein an aqueous slurry, containing as its principal particulate ingredient a water-wettable, insert, micron-size, inorganic material, along with both polyfluoroethylene fibers and polyfluoroethylene dispersion, is drawn through a foraminous structure to form a diaphragm thereon.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: August 19, 1986
    Assignee: The Dow Chemical Company
    Inventor: Charles K. Bon
  • Patent number: 4557810
    Abstract: The hydrophilicity and other properties of fluoropolymer-bonded asbestos diaphragms for use in brine electrolysis cells are improved by incorporating Na.sub.2 CO.sub.3 into the aqueous slurry from which the diaphragms are prepared.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: December 10, 1985
    Assignee: The Dow Chemical Company
    Inventors: Richard N. Beaver, Kenneth R. Evans, Donald D. Waters
  • Patent number: 4552617
    Abstract: Security features for authentification of currency paper are incorporated within the paper during the paper making process. Various codes are incorporated within the paper for viewing by means of transmitted light. In one embodiment the identifying indicia is microprinted on thin strips of a carrier material which dissolves during the dewatering and drying stage of the paper making process. The microprinted indicia remains intact and is readable by means of transmitted light yet is neither legible nor reproductible with reflected light.
    Type: Grant
    Filed: June 13, 1984
    Date of Patent: November 12, 1985
    Assignee: Crane & Co.
    Inventor: Timothy T. Crane
  • Patent number: 4534398
    Abstract: This invention relates to a security paper document incorporating counterfeit deterrent, optical variable devices that display their optically active properties in reflectance when there are changes in the angle of incodent light with respect to the eye of the viewer. The devices are applied by means of a carrier paper and a base web format during the papermaking process. An embedment roll presses the device within the base web while the base web fibers are unconsolidated and pliable.
    Type: Grant
    Filed: April 30, 1984
    Date of Patent: August 13, 1985
    Assignee: Crane & Co.
    Inventor: Timothy T. Crane
  • Patent number: 4478680
    Abstract: A method for treating an electrolytic diaphragm formed by adhering asbestos fibers to the surface of an electrolytic cathode made of a wire mesh or porous plate, which comprises permeating water glass into the diaphragm, then permeating a chloroprene latex into the water glass-treated diaphragm, and drying the treated diaphragm under heat.
    Type: Grant
    Filed: March 2, 1983
    Date of Patent: October 23, 1984
    Assignee: Showa Denko K.K.
    Inventors: Takeshi Adachi, Tetsuo Takeshita, Itsuaki Matsuda
  • Patent number: 4462867
    Abstract: A method of forming a paper comprises depositing paper fibres onto a support surface from a furnish by drainage, laying a strip having fibre deposition blocking regions and fibre deposition permitting regions onto the deposited fibres and continuing deposition to form a paper having the strip partially embedded in the paper and partially exposed.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: July 31, 1984
    Assignee: Portals Limited
    Inventor: James S. Fuller
  • Patent number: 4462866
    Abstract: A sheet material such as paper is provided during manufacture with an elongate element partially disposed within the thickness of the paper sheet but exposed at spaced locations one one side of the sheet. The paper may be used in making security documents such as banknotes and checks.
    Type: Grant
    Filed: February 18, 1982
    Date of Patent: July 31, 1984
    Assignee: Portals Limited
    Inventors: Alan J. Tooth, Neil Pask