Pore Forming In Situ (e.g., Gas Generation) Patents (Class 162/101)
  • Patent number: 10711403
    Abstract: The invention relates to a method of manufacturing a shaped tray or plate of fibrous material. The method comprises the steps of (i) providing a fibrous pulp, in which the fibres substantially consist of at least 85 wt-% of softwood fibres having an average fibre length of at least 2.0 mm and at most 15 wt-% of broke having a fibre length of about 0.05 mm to 1.0 mm, (ii) turning the pulp into a foamed suspension, (iii) supplying the foamed suspension from a headbox to a forming fabric of a board machine to form a fibrous web, (iv) drying the web to obtain a dried web having a compressibility in the thickness direction of at least 20%, and (v) including the web as a layer in a board, which is turned to said tray or plate by thermopressing or deep-drawing. The invention even covers shaped trays and plates produced by use of the method.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: July 14, 2020
    Assignee: Stora Enso OYJ
    Inventors: Isto Heiskanen, Jari Rasanen
  • Patent number: 10519607
    Abstract: Tissue papers and methods of making are disclosed herein. In one aspect, a tissue paper is substantially free of a chemical debonder and has a geometric mean tensile (GMT) in a range between about 500 and about 5,000 g/3 inches (g/3 in.) and a caliper in a range between about 50 and about 350 mils/8 sheets.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: December 31, 2019
    Assignee: GPCP IP Holdings LLC
    Inventor: Jeffrey A. Lee
  • Patent number: 10400370
    Abstract: The present invention relates to a nonwoven fabric or nonwoven composite material comprising the nonwoven fabric for shielding and absorbing electromagnetic waves, manufactured by using a carbon fiber plated with metal (copper and nickel) produced in an electroless or electrolysis continuous process. The nonwoven fabric of the present invention is thinner and stronger than the conventional art, and has an advantage of being capable of controlling conductivity by controlling only the content of the carbon fiber plated with metal, without need for further addition of conductive powder.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: September 3, 2019
    Assignee: BULLSONE MATERIAL CO., LTD.
    Inventors: Jong Gil Lee, Soo Hyung Hur, Min Young Park, Byung Rok Kang, Ji Hun Kang
  • Patent number: 10392798
    Abstract: Described herein are acoustical panels comprising a substrate and a coated non-woven veil that comprises a coating applied to a non-woven veil, the non-woven veil having an airflow resistance of greater than 45 mks rayls and comprising: from about 20 wt. % to about 60 wt. % fibers; and from about 40 wt. % to about 80 wt. % of a filler; and wherein the coating is present on the non-woven veil in an amount ranging from about 110 dry g/m2 to about 135 dry g/m2. Methods of making and using the panels are also described.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: August 27, 2019
    Assignee: AWI Licensing LLC
    Inventors: Eric D. Kragness, Chris Wells, Oliver Ebert, Alfred Winkler
  • Patent number: 10259151
    Abstract: The present invention relates to a method of forming a molded fibrous product, comprising the steps of foaming an aqueous suspension of natural fibers, optionally in combination with synthetic fibers, to provide a first fibrous foam, a surfactant may be added to aid the foaming, feeding the fibrous foam into a mold, mechanically withdrawing a part of the water contained in the foam to produce a solidified, moist fibrous composition, and evaporating water from the solidified, moist fibrous composition to produce a dry fibrous product.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: April 16, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Harri Kiiskinen, Esa Torniainen, Karita Kinnunen
  • Patent number: 10138600
    Abstract: A method of producing a fiber web, and the fiber web. According to the present method, a fiber material layer is formed from fiber pulp, by using foam forming, which layer is then dried. According to the present invention, at least part of the fiber pulp is mechanical or chemi-mechanical pulp, which is ozonized before the foam forming. By using ozonization, the pulp to be foamed is improved, as regards both fiber bonding and the removal of the wood extractives, during pulp preparation. The manufactured products are suitable, for example, for end uses, where the packages are intended to be light and strong, and the properties of which ensure that the taste and smell of the products are not tainted, such as sales and storage packages for food supplies, chocolate and cigarettes.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: November 27, 2018
    Assignee: METSA BOARD OYJ
    Inventors: Pekka Jannari, Pirita Suortamo
  • Patent number: 9616154
    Abstract: A stimuli-responsive material includes a stimuli-responsive polymer, fibers and water, wherein the fibers have a number average diameter of 1 to 900 nm and are present in the stimuli-responsive material in a dispersed state; and a medical material and an anti-adhesive material, each of which includes a stimuli-responsive material including a stimuli-responsive polymer, fibers and water, wherein the fibers have a number average diameter of 1 to 900 nm and are present in the stimuli-responsive material in a dispersed state.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: April 11, 2017
    Assignee: Toray Industries, Inc.
    Inventors: Tomoyuki Horiguchi, Kosaku Takeuchi, Yoshihiro Naruse, Kazuhiro Tanahashi, Makito Yokoe, Kohei Yamashita
  • Patent number: 9382666
    Abstract: A multi-layer through air dried tissue including a first exterior layer comprised substantially of hardwood fibers, an interior layer comprised substantially of softwood fibers, and a second exterior layer comprised substantially of hardwood fibers. The interior layer includes a first wet end additive comprising an ionic surfactant and a second wet end additive comprising a non-ionic surfactant.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: July 5, 2016
    Assignee: FIRST QUALITY TISSUE, LLC
    Inventors: Karthik Ramaratnam, Byrd Tyler Miller, IV, Shane Ervin Hayes, James E. Sealey, II
  • Publication number: 20120097032
    Abstract: The fiber webs described herein may be incorporated into filter media and filter elements. The fiber webs may exhibit a high dust holding capacity. The fiber webs may also exhibit a low thickness. The fiber webs may be sufficiently flexible and/or deformable so that they may be processed to include a series of waves (also known as flutes) that extend along the cross-machine direction.
    Type: Application
    Filed: December 29, 2011
    Publication date: April 26, 2012
    Applicant: Hollingsworth & Vose Company
    Inventors: James M. Witsch, Douglas M. Guimond
  • Patent number: 8157959
    Abstract: The invention relates to a method of manufacturing board (2), a board provided by the method, and a container formed from the same, such as a disposable drinking cup. According to the invention, fiber-based stock is doped with a polymer (6), ending in a pulp web that is formed of this pulp on a board machine wire, and in a board layer (3) that is obtained from the same by pressing and drying. When the board layer is heated, the polymer melts and water vapor bubbles penetrate it, rendering the layer porous. The polymer used for the doping can comprise, for example, a low density polyethylene (LDPE) that has a melt viscosity of about 15. Pore-generating heating can be carried out for the board or only for the container manufactured from it. The porous layer prevents the hot drink enjoyed from the cup from burning the fingers of the user.
    Type: Grant
    Filed: March 17, 2008
    Date of Patent: April 17, 2012
    Assignee: Stora Enso Oyj
    Inventors: Jari Räsänen, Tapani Penttinen, Niilo Pöyhönen
  • Patent number: 7758722
    Abstract: The invention relates to a method for producing an absorbent fiber product, starting with a parent fiber product that comprises fibers that, on the one hand, lie at a statistical distance from one another and, on the other hand, make contact with one another at contact points. The method comprises treating the parent fiber product with a fluid medium in such a way that the fibers are at least partially wetted and the fluid medium is then rapidly evaporated by irradiation, so that the evaporation pressure generated by the evaporating fluid medium has a kinematic effect on the fibers, which increases the distance between them. In this way the risk of inadvertent, in particular, thermal damage to the fibers is eliminated. Furthermore, the intrinsic fiber structure is left unaffected, or is only affected in a controlled manner. This prevents the uncontrolled destruction of the fiber structure and a detrimental effect on the fiber product, for example, to its tear resistance when wet.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: July 20, 2010
    Assignee: Saueressig GmbH + Co.
    Inventor: Kilian Saueressig
  • Publication number: 20090126898
    Abstract: A paper material having water sorption capacity and method for forming the same is provided. The paper material may be formed from a mixture including thermoplastic organic fibers, micro porous particles, and hydroscopic salt or a mixture including organic fibers, titania or a transition alumina micro porous particles, and a hydroscopic salt. The paper may be produced by forming an aqueous slurry, including organic fibers and micro porous particles, mixing the slurry, feeding the mixed slurry into a paper making apparatus thereby forming a sheet, contacting the sheet with a solution containing an amount of hydroscopic salt, and drying the hydroscopic salt containing solution.
    Type: Application
    Filed: November 20, 2007
    Publication date: May 21, 2009
    Inventors: Dustin Matthew Eplee, Kenneth R. Butcher
  • 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: 7416636
    Abstract: The present invention relates to a method and apparatus for foam forming, wherein fibrous foam suspension is introduced from the head box (78, 178) of a production machine to the web forming section thereof. At least one solid material is mixed into the foam in the head box (78, 178). The method and the apparatus of the invention are particularly suitable for manufacturing various web-like products of cellulose, glass fiber, aramide, sisal, or other corresponding fibre material.
    Type: Grant
    Filed: November 7, 2002
    Date of Patent: August 26, 2008
    Assignee: Ahlstrom Glassfibre Oy
    Inventors: Rainer Blomqvist, Harri Kostamo, Eino Laine, Kay Rokman
  • Patent number: 7326318
    Abstract: A wetlaid or foam formed hydraulically entangled nonwoven material containing at least 30%, by weight, pulp fibres and at least 20%, by weight, man-made fibres or filaments. The material has a basis weight variation in a non-random pattern in that it comprises a plurality of higher basis weight cushions protruding from one major surface of the material. The cushions as a main component comprise pulp fibres and are surrounded by a lower basis weight network which as a main component comprises the man-made fibres or filaments. The invention further refers to a method for making the material.
    Type: Grant
    Filed: March 28, 2003
    Date of Patent: February 5, 2008
    Assignee: SCA Hygiene Products AB
    Inventor: Mikael Strandqvist
  • Patent number: 7166190
    Abstract: Methods for forming an absorbent fibrous composite containing absorbent material dispersed in bands through the composite and along the composite's length are disclosed. The methods generally include depositing a fibrous slurry on a foraminous support to form a web and depositing or injecting absorbent material into the web across its width to provide a web having absorbent material in bands along the composite's length. Drying the web provides a fluted absorbent composite. In one embodiment, the method is a wetlaid method and in another embodiment, the method is a foam-forming method. Preferably, the methods are twin-wire forming methods.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: January 23, 2007
    Assignee: National Institute for Strategic Technology Acquisistion and Commercialization
    Inventors: Peter A. Graef, Clifford R. Bolstad, Fred B. Howard, Charles E. Miller, Daniel T. Bunker
  • Patent number: 6921459
    Abstract: The present invention relates to a method for forming a non-woven fibrous web comprised of aramid fibers and aramid fibrid which comprises forming a foam furnish by agitating the fibers and fibrid in a foamed medium, and passing the foam furnish onto a screen and defoaming the furnish. In effectively agitating the aramid fibers in the foamed medium, the agitating means is mounted for displacement within the foamed medium and includes a convex leading surface facing in the direction of displacement. The leading surface includes upper and lower portions converging in the direction of displacement to form a generally convex leading surface and driving means for displacing the agitating means in the direction of displacement for dispersing and mutually separating the aramid fibers within the foamed medium.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: July 26, 2005
    Assignee: FiberMark, Inc.
    Inventors: Homan B. Kinsley, Jr., Christopher B. Peart
  • Patent number: 6852196
    Abstract: A method for applying a foam to a paper web is provided. Specifically, a foam is first formed from a liquid-based composition and a gas, such as air. Once formed, the foam is applied by a foam applicator to the web. In one embodiment, for example, the foam applicator applies the foam without substantially contacting the web. When applied with the foam, the web typically has a solids consistency less than about 95% by weight of the web. In some embodiments, one or more vacuum slots can be utilized in conjunction with the foam applicator to facilitate uniform application of the foam to the paper web.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: February 8, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Joseph G. Capizzi
  • Patent number: 6830656
    Abstract: The present invention relates to a nonwoven web comprised of metal or refractory fibers with nylon as a binder. The nonwoven web is prepared by forming a foam furnish by agitating the fibers in a foamed medium, and passing the foam furnish onto a screen and defoaming the furnish. It is preferred that the nylon binder is added to the foam furnish in the form of fibers. Once the furnish is defoamed to form a nonwoven web, the sheet is dried at a temperature sufficient to melt the nylon binder.
    Type: Grant
    Filed: April 30, 2002
    Date of Patent: December 14, 2004
    Assignee: FiberMark, Inc.
    Inventor: Homan B. Kinsley, Jr.
  • Patent number: 6811653
    Abstract: A multi-purpose paper, a manufacturing method thereof, and an application thereof are provided. The method of manufacturing the multi-purpose paper comprises steps of (a) providing a papermaking material and obtaining a clean paper pulp by treating the papermaking material, (b) adding at least one functional additive into the clean paper pulp to form the multi-purpose paper, and (c) processing the multi-purpose paper to form thereon an uneven surface structure. The cultivating paper has the combined functions of weed control, pest control, supplying the required nutrients to plants to help develop the root system, maintaining moisture and breath for the root system. The multi-purpose paper can be carriers of agricultural antagonistic microorganisms and serve as the basic functional substrate for weed control, pest control, sowing, growing seedlings, fertilization, fertilizer saving, manpower saving and organic cultivating.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: November 2, 2004
    Assignee: Yuen Foong Yu Paper MFG Co., Ltd.
    Inventor: Ching-Chung Huang
  • Publication number: 20040144508
    Abstract: The present invention relates to a method for forming a non-woven fibrous web comprised of aramid fibers and aramid fibrid which comprises forming a foam furnish by agitating the fibers and fibrid in a foamed medium, and passing the foam furnish onto a screen and defoaming the furnish. In effectively agitating the aramid fibers in the foamed medium, the agitating means is mounted for displacement within the foamed medium and includes a convex leading surface facing in the direction of displacement. The leading surface includes upper and lower portions converging in the direction of displacement to form a generally convex leading surface and driving means for displacing the agitating means in the direction of displacement for dispersing and mutually separating the aramid fibers within the foamed medium.
    Type: Application
    Filed: September 9, 2003
    Publication date: July 29, 2004
    Applicant: FiberMark, Inc.
    Inventors: Homan B. Kinsley, Christopher B. Peart
  • Publication number: 20040065420
    Abstract: Methods for forming an absorbent fibrous composite containing absorbent material dispersed in bands through the composite and along the composite's length are disclosed. The methods generally include depositing a fibrous slurry on a foraminous support to form a web and depositing or injecting absorbent material into the web across its width to provide a web having absorbent material in bands along the composite's length. Drying the web provides a fluted absorbent composite. In one embodiment, the method is a wetlaid method and in another embodiment, the method is a foam-forming method. Preferably, the methods are twin-wire forming methods.
    Type: Application
    Filed: October 6, 2003
    Publication date: April 8, 2004
    Applicant: Weyerhaeuser Company
    Inventors: Peter A. Graef, Clifford R. Bolstad, Fred B. Howard, Charles E. Miller, Daniel T. Bunker
  • Publication number: 20040016527
    Abstract: A multi-purpose paper, a manufacturing method thereof, and an application thereof are provided. The method of manufacturing the multi-purpose paper comprises steps of (a) providing a papermaking material and obtaining a clean paper pulp by treating the papermaking material, (b) adding at least one functional additive into the clean paper pulp to form the multi-purpose paper, and (c) processing the multi-purpose paper to form thereon an uneven surface structure. The cultivating paper has the combined functions of weed control, pest control, supplying the required nutrients to plants to help develop the root system, maintaining moisture and breath for the root system. The multi-purpose paper can be carriers of agricultural antagonistic microorganisms and serve as the basic functional substrate for weed control, pest control, sowing, growing seedlings, fertilization, fertilizer saving, manpower saving and organic cultivating.
    Type: Application
    Filed: March 28, 2003
    Publication date: January 29, 2004
    Applicant: Yuen Foong Yu Paper MFG Co., LTD
    Inventor: Ching-Chung Huang
  • Patent number: 6682215
    Abstract: The present invention relates to an apparatus for effectively agitating non-cellulosic fibers in a foamed medium, comprising agitating means mounted for displacement within the foamed medium and including a leading surface facing in the direction of displacement. The leading surface includes upper and lower portions converging in the direction of displacement to form a generally convex leading surface and driving means for displacing the agitating means in the direction of displacement for dispersing and mutually separating the metal fibers within the foamed medium. The present invention further relates to a method for forming a non-woven fibrous web comprised of non-cellulosic fibers which comprises forming a foam furnish by agitating the fibers in a foamed medium with the aforedescribed apparatus, and passing the foam furnish onto a screen and defoaming the furnish.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: January 27, 2004
    Assignee: Fibermark, Inc.
    Inventors: Homan B. Kinsley, Jr., Christopher B. Peart
  • Publication number: 20030221808
    Abstract: A method for applying a foam composition to a paper web is provided. Specifically, a paper web is initially formed from papermaking fibers and is carried by a first moving papermaking surface so that a first surface of the paper web faces the first moving papermaking surface (e.g., fabric). A foam composition is deposited onto a second moving papermaking surface (e.g., fabric). The second moving papermaking surface is positioned adjacent to the first moving papermaking surface so that a second surface of the paper web faces the second moving papermaking surface. As a result, at least a portion of the foam composition is transferred to the paper web.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 4, 2003
    Applicant: Kimberly-Clark Worldwide, Inc.
    Inventor: Joseph G. Capizzi
  • Publication number: 20030201082
    Abstract: The present invention relates to a nonwoven web comprised of metal or refractory fibers with nylon as a binder. The nonwoven web is prepared by forming a foam furnish by agitating the fibers in a foamed medium, and passing the foam furnish onto a screen and defoaming the furnish. It is preferred that the nylon binder is added to the foam furnish in the form of fibers. Once the furnish is defoamed to form a nonwoven web, the sheet is dried at a temperature sufficient to melt the nylon binder.
    Type: Application
    Filed: April 30, 2002
    Publication date: October 30, 2003
    Inventor: Homan B. Kinsley
  • Publication number: 20030192661
    Abstract: A non-woven web of fibrous material is produced using a moving foraminous element in the practice of the foam process. A first foam slurry of air, water, fibers and a surfactant is generated and centrifugally pumped into contact with the moving foraminous element. Substantially fiber-free foam is withdrawn from the foraminous element while forming a non-woven web of fibrous material on the foraminous element, and at least a part of the substantially fiber-free foam is used in the generation of the first foam slurry. Recycling is also typically practiced using a centrifugal pump, and the centrifugal pumps are preferably degassing pumps which remove some of the gas from the foam. By practicing the invention it is possible to produce fibrous webs using the foam process that are more than two meters wide, and at a forming speed of more than about 100 m/min (e.g. about 200-500 m/min).
    Type: Application
    Filed: May 8, 2003
    Publication date: October 16, 2003
    Applicant: Ahlstrom Glassfibre Oy
    Inventors: Jorma Elonen, Kay Rokman, Arto Koso, Juhani Jansson
  • Patent number: 6630054
    Abstract: Methods for forming an absorbent fibrous composite containing absorbent material dispersed in bands through the composite and along the composite's length are disclosed. The methods generally include depositing a fibrous slurry on a foraminous support to form a web and depositing or injecting absorbent material into the web across its width to provide a web having absorbent material in bands along the composite's length. Drying the web provides a fluted absorbent composite. In one embodiment, the method is a wetlaid method and in another embodiment, the method is a foam-forming method. Preferably, the methods are twin-wire forming methods.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: October 7, 2003
    Assignee: Weyerhaeuser Company
    Inventors: Peter A. Graef, Clifford R. Bolstad, Fred B. Howard, Charles E. Miller, Daniel T. Bunker
  • Patent number: 6616802
    Abstract: The present invention relates to a method for forming a non-woven fibrous web comprised of refractory fibers which comprises forming a foam furnish by agitating the fibers in a foamed medium, and passing the foam furnish onto a screen and defoaming the furnish. The present invention employs a unique apparatus for effectively agitating the refractory fibers in the foamed medium, the agitating means being mounted for displacement within the foamed medium and including a convex leading surface facing in the direction of displacement. The leading surface includes upper and lower portions converging in the direction of displacement to form a generally convex leading surface and driving means for displacing the agitating means in the direction of displacement for dispersing and mutually separating the metal fibers within the foamed medium.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: September 9, 2003
    Assignee: FiberMark, Inc.
    Inventors: Homan B. Kinsley, Jr., Christopher B. Peart
  • Patent number: 6596124
    Abstract: A method of forming a cellular material or “core” by immersing the core in water until it is sufficiently flexible to be molded around a tool into the required shape and then drying the formed core such that the core then retains that shape.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: July 22, 2003
    Assignee: Hexcel Corporation
    Inventors: Nigel Hookham, Andrew Lee
  • Patent number: 6582555
    Abstract: The present invention is a method for uniformly applying a foam to a wet tissue web is provided. Specifically, a foam is first formed from a liquid-based composition and a gas, such as air. Once formed, the foam is applied by a foam applicator to the wet tissue web. In one embodiment, for example, the foam applicator applies the foam with a flexible scraper contacting the wet tissue web during the application of the foam. When applied with the foam, the wet tissue web typically has a solids consistency less than about 95% by dry weight of the tissue web. In some embodiments, one or more vacuum slots may be utilized in conjunction with the foam applicator to facilitate uniform application of the foam to the wet tissue web.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: June 24, 2003
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Joseph George Capizzi, Strong C. Chuang
  • Patent number: 6562193
    Abstract: A non-woven web of fibrous material is produced using a moving foraminous element in the practice of the foam process. A first foam slurry of air, water, fibers and a surfactant is generated and centrifugally pumped into contact with the moving foraminous element. Substantially fiber-free foam is withdrawn from the foraminous element while forming a non-woven web of fibrous material on the foraminous element, and at least a part of the substantially fiber-free foam is used in the generation of the first foam slurry. Recycling is also typically practiced using a centrifugal pump, and the centrifugal pumps are preferably degassing pumps which remove some of the gas from the foam. By practicing the invention it is possible to produce fibrous webs using the foam process that are more than two meters wide, and at a forming speed of more than about 100 m/min (e.g. about 200-500 m/min).
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: May 13, 2003
    Assignee: Ahlstrom Glassfibre Oy
    Inventors: Jorma Elonen, Kay Rokman, Arto Koso, Juhani Jansson
  • Publication number: 20030085009
    Abstract: The present invention is a method for uniformly applying a foam to a wet tissue web is provided. Specifically, a foam is first formed from a liquid-based composition and a gas, such as air. Once formed, the foam is applied by a foam applicator to the wet tissue web. In one embodiment, for example, the foam applicator applies the foam with a flexible scraper contacting the wet tissue web during the application of the foam. When applied with the foam, the wet tissue web typically has a solids consistency less than about 95% by dry weight of the tissue web. In some embodiments, one or more vacuum slots may be utilized in conjunction with the foam applicator to facilitate uniform application of the foam to the wet tissue web.
    Type: Application
    Filed: November 5, 2001
    Publication date: May 8, 2003
    Inventors: Joseph George Capizzi, Strong C. Chuang
  • Publication number: 20030079846
    Abstract: A multi-purpose paper, a manufacturing method thereof, and an application thereof are provided. The method of manufacturing the multi-purpose paper comprises steps of (a) providing a papermaking material and obtaining a clean paper pulp by treating the papermaking material, (b) adding at least one functional additive into the clean paper pulp to form the multi-purpose paper, and (c) processing the multi-purpose paper to form thereon an uneven surface structure. The cultivating paper has the combined functions of weed control, pest control, supplying the required nutrients to plants to help develop the root system, maintaining moisture and breath for the root system. The multi-purpose paper can be carriers of agricultural antagonistic microorganisms and serve as the basic functional substrate for weed control, pest control, sowing, growing seedlings, fertilization, fertilizer saving, manpower saving and organic cultivating.
    Type: Application
    Filed: October 26, 2001
    Publication date: May 1, 2003
    Applicant: Yuen Foong Yu Paper MFG Co., LTD
    Inventor: Ching-Chung Huang
  • Publication number: 20030056911
    Abstract: A tissue sheet is made using a modified wet pressing machine in a modified wet pressing process employing an integrally sealed air press. After initial formation and conventional vacuum dewatering, the wet web is conformed to the surface contour of a relatively coarse fabric to give the web a textured surface. By creating a pressure differential across the web of at least 30 inches of mercury and an air stream through the web of at least 500 SCFM/in2, the air press noncompressively dewaters the wet web to a consistency of about 30 to about 40 percent prior to a heated drying cylinder. The web is dried to substantially preserve its three-dimensional, throughdried-like texture. The process provides a web having an exceptionally high degree of bulk and absorbency not expected in wet-pressed products.
    Type: Application
    Filed: July 18, 2002
    Publication date: March 27, 2003
    Inventors: Michael Alan Hermans, Frank Stephen Hada, Steven Jack Hickey
  • Publication number: 20030024666
    Abstract: The invention provides fluororesin fiber paper excellent in adhesion to a copper foil, heat resistance, chemical resistance, low water absorption and electric insulation and capable of being used as a substrate of a printed board suitable for use in high frequency, of which a low dielectric loss is required. The fluororesin fiber paper is a porous sheet obtained by forming a slurry comprising fluororesin fiber into a sheet by a wet paper making method and sintering the resultant sheet and has an average pore diameter of 0.5 to 50 &mgr;m and a maximum pore diameter of at most 250 &mgr;m. A copper-clad laminate for printed board is produced by laminating the fluororesin fiber paper and a copper foil having a ten point mean height of surface roughness profile (Rz) of 0.5 to 8.0 &mgr;m on each other by means of vacuum hot pressing.
    Type: Application
    Filed: July 31, 2002
    Publication date: February 6, 2003
    Applicant: TOMOEGAWA PAPER CO., LTD.
    Inventors: Takanori Suzuki, Hajime Tsuda
  • Patent number: 6503372
    Abstract: A non-woven web of cellulosic synthetic fibrous material is produced using a twin wire former. The former may have a closed first end and closed first and second sides, and a second end provided by first and second moving foraminous elements. An interior structure between the sides and second end may have at least first and second different length pluralities of conduits extending from the former first end toward the second end, and defining by themselves, or with wall elements, the interior volume into a first volume and a second volume on opposite sides thereof. A first fiber/foam slurry is introduced into the first volume and a second fiber/foam slurry in the second volume, and suction box assemblies are provided on the opposite sides of the foraminous elements from the interior volume for withdrawing foam from the slurries to forming a non-woven web on the foraminous elements.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: January 7, 2003
    Assignee: Ahlstrom Glassfibre Oy
    Inventors: Kay Rokman, Juhani Jansson, Eino Laine
  • Patent number: 6500302
    Abstract: Apparatus and process for producing foam formed fibrous web in which the furnish is made up by mixing a thin water slurry of fibers at a consistency in the range of from about 0.5 to about 7 weight percent fibers with sufficient aqueous foam containing a surfactant and having an air content in the range of from about 55 to about 80 percent by volume to form a foamed fiber furnish containing from about 0.1 to about 3 weight percent fibers which is supplied directly to the forming felt or wire of a twin wire papermaking machine, adding makeup surfactant and discarding excess aqueous foam from the process as required to maintain the desired volume of foamed liquid therein.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: December 31, 2002
    Assignee: Fort James Corporation
    Inventors: John Henry Dwiggins, Dinesh M. Bhat
  • Patent number: 6447640
    Abstract: A process for making absorbent sheet includes: (a) depositing an aqueous furnish of cellulosic fiber on a forming fabric; (b) dewatering the wet web to a consistency of from about 15 to about 40 percent; (c) transferring the dewatered web from the forming fabric to another fabric traveling at a speed of from about 10 to about 80 percent slower than the forming fabric; (d) wet-shaping the web on an impression fabric whereby the web is macroscopically rearranged to conform to the surface of the impression fabric; and (e) impingement air drying the web. The process is particularly suitable for making high bulk products form difficult to process furnishes such as recycle furnishes and for making high basis weight products without compressive dewatering with a papermaking felt.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: September 10, 2002
    Assignee: Georgia-Pacific Corporation
    Inventors: Gary M. Watson, Steven L. Edwards
  • Patent number: 6444088
    Abstract: A nonwoven web of fibrous material is made by the foam process using a manifold of a particular construction. The manifold has a casing with first and second opposite ends including an inlet for a foam-fiber-surfactant slurry at the first end, and optionally a valved outlet at the second end. A center section of the manifold casing has a (e.g. rectangular) cross-section that becomes smaller moving from an inlet toward the outlet. First and second substantially closed side walls, a porous front wall having an effective length, and a back wall opposite the front wall, are provided for the center section, the walls planar or curved. Any suitable structures are provided for introducing a second (e.g. substantially fiber-free, or a fiber-foam slurry) foam into the center section through the back wall.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: September 3, 2002
    Assignee: Ahlstrom Glassfibre Oy
    Inventors: Kay Rökman, Juhani Jansson
  • Patent number: 6440266
    Abstract: A non-woven web of fibrous material containing a reactive particulate material is made using the wet laid, or preferably foam, process. First and second fibrous webs are made using the wet laid or foam process, and a liquid or foam slurry including reactive particulate material is provided between the webs so as to provide a composite web. Liquid, or foam and liquid, are withdrawn from the composite web and then the composite web is dried so as to produce a final non-woven web with reactive material having substantially optimum reactivity (that is the reactive material loses a minimum amount reactivity during the web production process). The webs and slurry may be made using substantially pure water, and the particulate part of the reactive material is mixed with the foam or liquid slurry no more than about ten seconds before the liquid and/or foam are withdrawn from the composite web.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: August 27, 2002
    Assignee: Ahlstrom Paper Group Research and Competence Center
    Inventors: Jonathan George, Andrea Grosso, Raimo Piittala, Kay Rokman, Kaj Back
  • Patent number: 6413368
    Abstract: Apparatus and process for producing foam formed fibrous web in which the furnish is made up by mixing a thin water slurry of fibers at a consistency in the range of from about 0.5 to about 7 weight percent fibers with sufficient aqueous foam containing a surfactant and having an air content in the range of from about 55 to about 80 percent by volume to form a foamed fiber furnish containing from about 0.1 to about 3 weight percent fibers which is supplied directly to the forming felt or wire of a twin wire papermaking machine, adding makeup surfactant and discarding excess aqueous foam from the process as required to maintain the desired volume of foamed liquid therein.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: July 2, 2002
    Assignee: Fort James Corporation
    Inventors: John Henry Dwiggins, Dinesh M. Bhat
  • Patent number: 6344111
    Abstract: A novel paper article, a method of making a paper product, and an embossing roll are disclosed for providing a paper surface region having a minority of fiber to fiber bonds broken in the paper surface region to a depth less than about 0.02 mm from the paper surface. In one aspect, the roughened embossing roll includes protuberances or depressions sized at less than about 0.1 mm. In one aspect, the roughened embossing roll includes protuberances or depressions adapted to produce paper product surface deformations in the paper surface, wherein the paper product surface deformations are invisible to an unaided human eye. The present invention provides a paper product having higher perceived softness while maintaining tensile strength.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: February 5, 2002
    Assignee: Kimberly-Clark Wordwide, Inc.
    Inventor: Lee Delson Wilhelm
  • Patent number: 6287417
    Abstract: A method and apparatus for recovery of surfactant from a foamable liquid aqueous solution thereof wherein foamable liquid containing surfactant is sparged with air or gas forming foam enriched in surfactant and residual liquid depleted in surfactant, foam enriched in surfactant is separated from residual liquid and resolved into foamable liquid enriched in surfactant by separation of gas or air therefrom.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: September 11, 2001
    Assignee: Fort James Corporation
    Inventor: Dinesh M. Bhat
  • Patent number: 6258203
    Abstract: A printed circuit board is made from at least one non-woven sheet or web layer comprising at least 50% by weight acrylic fibers, with any balance substantially electrically non-conductive fibers, filler, and binder. The sheet or web is preferably made by the foam process, and may contain 60-80% straight polyacrylonitrile fibers and 40-20% fibrillated (pulp) ones. The web or sheet is preferably compressed by thermal calendering so that it has a density of about 0.1-1 grams per cubic centimeter; and the web or sheet may have a basis weight of between about 20-120 grams per square meter. The web or sheet may also have a 1-40% of substantially electrically non-conductive organic or inorganic binder, or may be substantially binder free.
    Type: Grant
    Filed: September 21, 1999
    Date of Patent: July 10, 2001
    Assignee: Ahlstrom Glassfibre Oy
    Inventors: Kay Rokman, Rod Komlenic, Kelly Rennels, Hakan Sabel
  • Publication number: 20010004926
    Abstract: A nonwoven web of fibrous material is made by the foam process using a manifold of a particular construction. The manifold has a casing with first and second opposite ends including an inlet for a foam-fiber-surfactant slurry at the first end, and optionally a valved outlet at the second end. A center section of the manifold casing has a (e.g. rectangular) cross-section that becomes smaller moving from an inlet toward the outlet. First and second substantially closed side walls, a porous front wall having an effective length, and a back wall opposite the front wall, are provided for the center section, the walls planar or curved. Any suitable structures are provided for introducing a second (e.g. substantially fiber-free, or a fiber-foam slurry) foam into the center section through the back wall.
    Type: Application
    Filed: February 9, 2001
    Publication date: June 28, 2001
    Applicant: Ahlstrom Glassfibre Oy.
    Inventors: Kay Rokman, Juhani Jansson
  • Patent number: 6238518
    Abstract: A non-woven web of cellulosic synthetic fibrous material is produced using a twin wire former. The former may have a closed first end and closed first and second sides, and a second end provided by first and second moving foraminous elements. An interior structure between the sides and second end may have at least first and second different length pluralities of conduits extending from the former first end toward the second end, and defining by themselves, or with wall elements, the interior volume into a first volume and a second volume on opposite sides thereof. A first fiber/foam slurry is introduced into the first volume and a second fiber/foam slurry in the second volume, and suction box assemblies are provided on the opposite sides of the foraminous elements from the interior volume for withdrawing foam from the slurries to forming a non-woven web on the foraminous elements.
    Type: Grant
    Filed: March 2, 1999
    Date of Patent: May 29, 2001
    Assignee: Ahlstrom Paper Group Oy
    Inventors: Kay Rokman, Juhani Jansson, Eino Laine
  • Patent number: 6194477
    Abstract: Expanded cellular structures are formed from dense nonporous cellulose paper with an air permeance of less than 30 ml/min which cellular structure is provided with a shape retention of at least 90%. The shape stability is obtained by forming the cellular structure, spraying with an aqueous liquid and heating, the amount of liquid, time and temperature of heating being selected and sufficient to provide the desired shape retention. The minimum amount of water is at least 30 weight % of dry paper more usually at least 75% with minimum heating of 1 minute at 100° C.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: February 27, 2001
    Assignee: Hexcel Corporation
    Inventors: John Leslie Cawse, Ayub Khan, Graham Kemp, Terence Charles Webb
  • Patent number: 6136153
    Abstract: In an assembly and method for producing a non-woven web of fibrous material utilizing the foam process, an edge seal for the former is provided which can include the introduction of substantially free foam into the edge seal for providing lubrication and to prevent leakage of fiber-containing slurry from the former. Web formation is primarily due to a mechanical force provided by nip rolls, although suction tables and other suction devices are also provided to carry away foam removed by the nip rolls, or at other stages. The foam/fiber slurry may be formed by introducing the foam tangentially into a tank at a plurality of locations to establish a vortex, and by introducing fiber into the top of the tank, and pumping from the bottom of the tank. The foam/fiber slurry may be introduced using a structure that can be reciprocated toward and away from the inlet of the former, and which has a number of changes defined by pivoted or flexible plates to form distinct strata at least at the start of web formation.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: October 24, 2000
    Assignee: Ahlstrom Glassfibre Oy
    Inventors: Kay Rokman, Juhani Jansson, Eino Laine
  • Patent number: 6103060
    Abstract: The object of the invention is a method for manufacturing in a foam medium a sheet of paper or non-woven. In the invention, the surfactant used to form the foam is a nonionic compound of an ethoxylated alcohol of the Formula I:R--(OCH.sub.2 CH.sub.2).sub.n --OH (I)wherein n is an integer from 2 to 22 and R is a linear or branched alkyl group having 6 to 20 carbon atoms or where R is in the form of R'--X wherein X is an aromatic nucleus and R' is a linear or branched alkyl group having 2 to 16 carbon atoms. In particular, the invention applies to making household papers such as paper towels.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: August 15, 2000
    Assignee: Fort James France
    Inventors: Corinne Munerelle, Frank D. Harper, Gary L. Schroeder, Antony D. Awofeso, Henry S. Ostrowski