Creping Or Crinkling Patents (Class 264/282)
  • Patent number: 8980052
    Abstract: A method of making a fabric-creped absorbent cellulosic sheet. A papermaking furnish is compactively dewatered to form a nascent web having an apparently random distribution of papermaking fiber. The dewatered web is applied to a translating transfer surface that is moving at a transfer surface speed. The web is fabric creped from the transfer surface utilizing a patterned creping fabric. The fabric creping step occurs under pressure in a fabric creping nip defined between the transfer surface and the creping fabric. The creping fabric travels at a fabric speed that is slower than the transfer surface speed. The creping fabric contacts the transfer surface and applies pressure to the web against the transfer surface such that the fibers of the web are redistributed on the creping fabric to form a web with a drawable reticulum having a plurality of interconnected regions of different local basis weights.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: March 17, 2015
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Guy H. Super, Steven L. Edwards, Stephen J. McCullough, Frank C. Murray
  • Patent number: 8771578
    Abstract: A paper adhesive composition includes a cationic non-crosslinked acidified solution of a polyamidoamine with the repeating units wherein n?1; m=1 or 2; X?m is chloride, bromide, iodide, sulfate, bisulfate, nitrate, oxalate, alkyl carboxylate, aryl carboxylate, hydrogen phosphate, dihydrogen phosphate, alkyl sulfonate, aryl sulfonate, or a combination comprising at least one of the foregoing anions; R1 is a divalent aliphatic, cycloaliphatic, or araliphatic group having from 1 to 24 carbon atoms; R2 is hydrogen or a monovalent aliphatic, cycloaliphatic, or araliphatic group having from 1 to 24 carbon atoms; and R3 is a divalent hydrocarbon radical derived from a dibasic carboxylic acid. Also disclosed are methods of creping paper with the composition.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: July 8, 2014
    Inventor: Clayton J. Campbell
  • Publication number: 20140103575
    Abstract: An embossing system is provided for embossing at least a portion of a web comprising a first roll and at least a second roll. The first roll and second roll may define a first nip for embossing the web. At least one of the first roll and the second roll has elongated embossing elements extending substantially in the machine direction and optionally at least one of the first and second rolls has elongated embossing elements extending substantially in the cross-machine direction. At least one of the first roll and the second roll may also have perforate embossing elements extending substantially in the cross-machine direction that may or may not be elongated. The embossing elements are capable of imparting one or both of a cube embossing pattern or a perforate emboss on the web. The web may be a cellulosic fibrous web, a portion of which is lignin-rich, high coarseness fiber having generally tubular fiber configuration. In addition, the web may be creped with an undulatory creping blade.
    Type: Application
    Filed: November 18, 2013
    Publication date: April 17, 2014
    Applicant: GEORGIA-PACIFIC CONSUMER PRODUCTS LP
    Inventors: Anthony O. Awofeso, Kang Chang Yeh, Bruce W. Janda, Martin A. Hynnek, Gayln A. Schulz, Paul J. Ruthven, Ronald R. Reeb
  • Publication number: 20140093687
    Abstract: The present invention is directed to novel, improved, modified or treated microporous membranes for use in textile related applications and which are preferably composed of two or more dissimilar porous membrane or material layers laminated together using heat, compression and/or adhesives. The preferred inventive laminated composite microporous membrane is modified using a technique or treatment such as microcreping to introduce permanent small, regularly spaced, crepes, profiles, compactions, pleats, or wrinkles into the laminated composite microporous membrane for the purpose of improving mechanical strength, elasticity and/or resiliency. In addition, the inventive microcreped microporous laminated membrane more preferably has significantly improved ‘hand’ or softness, has ‘next-to-the-skin’ softness, and/or is quiet without crinkling noises during movement, which may be desired performance properties or characteristics of or in textile garments, materials or applications.
    Type: Application
    Filed: September 26, 2013
    Publication date: April 3, 2014
    Applicant: Celgard, LLC
    Inventors: Karl F. Humiston, Gerald P. Rumierz, Dickie J. Brewer
  • Patent number: 8673115
    Abstract: A method of making a fabric-creped absorbent cellulosic sheet includes forming a nascent web from a papermaking furnish, the nascent web having a generally random distribution of papermaking fiber, transferring the nascent web having the generally random distribution of papermaking fiber to a translating transfer surface that is moving at a transfer surface speed, drying the web, to a consistency of from about 30 to about 60 percent, including compactively dewatering the web prior to or concurrently with transfer of the web to the transfer surface, fabric-creping the web from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric with a patterned creping surface, the fabric-creping step occurring under pressure in a fabric creping nip defined between the transfer surface and the creping fabric, the web being creped from the transfer surface and redistributed on the creping fabric.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: March 18, 2014
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Steven L. Edwards, Guy H. Super, Stephen J. McCullough, Ronald R. Reeb, Hung Liang Chou, Kang Chang Yeh, John H. Dwiggins, Frank D. Harper
  • Patent number: 8647096
    Abstract: For producing a creped material, especially a sealing material for connections and transitions on buildings, with this material being provided with crepe folds, wherein the crepe folds run in different directions, a method is disclosed with the steps of: a) preparing a deformable material web (9) with a main expansion direction (90); b1) forming a longitudinal profile (91) in at least one region of the deformable material web (9), wherein the longitudinal profile runs essentially parallel to the main expansion direction (90); c) forming a transverse profile (94) in at least one region of the deformable material web (9), wherein the transverse profile (94) runs at an angle other than 180° relative to the main expansion direction (90); and d) pressing at least one section of the deformable material web (9) that has at least one region with a longitudinal profile (91) and a transverse profile (94), so that the material web (9) is provided with the crepe folds.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: February 11, 2014
    Assignee: Ewald Doerken AG
    Inventor: Bernd Meinecke
  • Patent number: 8608904
    Abstract: A creping aid system for use on a creping cylinder, for example, a Yankee dryer, comprises a creping adhesive and a creping modifier, the combination comprising polyethylene.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: December 17, 2013
    Assignee: Clearwater Specialties, LLC
    Inventors: Stephen H. Tucker, Douglas S. Smalley
  • Patent number: 8568560
    Abstract: A method of making a cellulosic absorbent sheet. A cellulosic web is prepared from an aqueous papermaking furnish. The web is fabric-creped. The fabric-creping step forms a creped web with a drawable reticulum having a plurality of interconnected regions of different local basis weights including at least: (i) a plurality of fiber-enriched regions of a relatively high local basis weight, interconnected by way of (ii) a plurality of lower local basis weight linking regions. The drawable reticulum includes a cohesive fiber matrix capable of increasing in void volume upon drawing. The creped web is dried, while substantially preserving the drawable reticulum, to form a dried web, and the dried web is drawn. The drawing step increases the bulk of the dried web.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 29, 2013
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Frank C. Murray, Greg A. Wendt, Steven L. Edwards, Stephen J. McCullough, Guy H. Super
  • Patent number: 8568559
    Abstract: A method of making a cellulosic absorbent sheet. A cellulosic web is prepared from an aqueous papermaking furnish. The web is fabric-creped. The fabric-creping step forms a creped web with a drawable reticulum having a plurality of interconnected regions of different local basis weights including at least: (i) a plurality of fiber-enriched regions of a relatively high local basis weight, interconnected by way of (ii) a plurality of lower local basis weight linking regions. The drawable reticulum includes a cohesive fiber matrix capable of increasing in void volume upon drawing. The creped web is dried, while substantially preserving the drawable reticulum, to form a dried web, and the dried web is drawn. The drawing step increases the void volume of the dried web.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 29, 2013
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Frank C. Murray, Greg A. Wendt, Steven L. Edwards, Stephen J. McCullough, Guy H. Super
  • Patent number: 8562786
    Abstract: A method of making a fabric-creped absorbent cellulosic sheet. A papermaking furnish is compactively dewatered to form a nascent web. The nascent web is applied to a translating transfer surface and is fabric-creped from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric. The creping fabric travels at a fabric speed that is slower than the speed of the transfer surface. The nascent web is creped from the transfer surface and redistributed on the creping fabric to form a creped web with a drawable reticulum having a plurality of interconnected regions of different local basis weights. The creped web is dried to form a dried web, and the dried web is drawn. The drawing step includes drawing the dried web between a first draw roll and a second draw roll.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 22, 2013
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Frank C. Murray, Greg A. Wendt, Steven L. Edwards, Stephen J. McCullough, Guy H. Super
  • Patent number: 8506978
    Abstract: A tissue product comprising an additive composition onto at least the surface of a fibrous article in order to increase the surface potential of the article, while retaining or improving manufacturing efficiency is disclosed. The additive composition comprises a bacteriostatic component and more preferably a water-soluble adhesive component and a bacteriostatic component. In some aspects, the additive may also contain additional water-soluble modifier components. Tissue products according to the present disclosure can attract and trap negatively charged matter, such as bacteria, into the tissue web. As such, tissue products can pickup bacteria from a surface and substantially hold the bacteria in the sheet to help prevent spreading bacteria to other surfaces.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: August 13, 2013
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Dave Allen Soerens, Cathleen Mae Uttecht, Bao Trong Do, SooYeon Oh
  • Patent number: 8388804
    Abstract: A method of making a fabric-creped absorbent cellulosic sheet includes applying a jet of papermaking furnish to a forming wire, the jet having a jet velocity and the forming wire moving at a forming wire velocity. The papermaking furnish is compactively dewatered to form a nascent web. The nascent web is applied to a transfer surface that is moving at a transfer surface speed. The nascent web is fabric-creped from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric that is traveling at a fabric-creping speed, the fabric-creping speed being slower than the transfer surface speed, and the fabric-creping step occurring under pressure in a fabric creping nip defined between the transfer surface and the creping fabric, such that the nascent web is creped from the transfer surface and redistributed on the creping fabric to form a creped web. The creped web is dried.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: March 5, 2013
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Guy H. Super, Steven L. Edwards, Stephen J. McCullough, Frank C. Murray
  • Patent number: 8388803
    Abstract: A method of making a fabric-creped absorbent cellulosic sheet includes compactively dewatering a papermaking furnish to form a nascent web having a random distribution of papermaking fiber, applying the nascent web to a translating transfer surface that is moving at a transfer surface speed, fabric-creping the nascent web from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a patterned creping fabric that is traveling at a fabric-creping speed that is slower than the transfer surface speed, the fabric-creping step occurring under pressure in a fabric creping nip defined between the transfer surface and the creping fabric, such that the nascent web is creped from the transfer surface and redistributed on the creping fabric to form a creped web with a drawable reticulum having a plurality of interconnected regions of different local basis weights.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: March 5, 2013
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Guy H. Super, Steven L. Edwards, Stephen J. McCullough, Frank C. Murray
  • Patent number: 8226797
    Abstract: A method of making a fabric-creped absorbent cellulosic sheet. A papermaking furnish is compactively dewatered to form a nascent web having an apparently random distribution of papermaking fiber. The dewatered web is applied to a translating transfer surface. The web is fabric-creped from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric, under pressure, in a fabric creping nip defined between the transfer surface and the creping fabric. The fabric is traveling a fabric speed that is slower than the speed of the transfer surface. The web is creped from the transfer surface and redistributed on the creping fabric to form a web with a drawable reticulum having a plurality of interconnected regions of different local basis weights. The web is dried and the web is drawn. The step of drawing the web preferentially attenuates the fiber-enriched regions of the web.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: July 24, 2012
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Frank C. Murray, Greg A. Wendt, Steven L. Edwards, Stephen J. McCullough, Guy H. Super
  • Publication number: 20120165775
    Abstract: An absorbent composite material may be manufactured by applying a flexible absorbent binder polymer (FAB), also referred to herein as a flexible superabsorbent, during the creping step of conventional tissue manufacturing. As such, the costly process of applying FAB to a substrate by spraying or printing followed by drying may be eliminated. The creping step has the additional advantage of improving the flexibility and softness of the FAB treated fibrous web.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 28, 2012
    Inventors: Dave Allen Soerens, Cathleen Mae Uttecht, Cynthia Suzanne Krueger
  • Publication number: 20120164206
    Abstract: A tissue product comprising an additive composition onto at least the surface of a fibrous article in order to increase the surface potential of the article, while retaining or improving manufacturing efficiency is disclosed. The additive composition comprises a bacteriostatic component and more preferably a water-soluble adhesive component and a bacteriostatic component. In some aspects, the additive may also contain additional water-soluble modifier components. Tissue products according to the present disclosure can attract and trap negatively charged matter, such as bacteria, into the tissue web. As such, tissue products can pickup bacteria from a surface and substantially hold the bacteria in the sheet to help prevent spreading bacteria to other surfaces.
    Type: Application
    Filed: December 28, 2010
    Publication date: June 28, 2012
    Inventors: Dave Allen Soerens, Cathleen Mae Uttecht, Bao Trong Do, SooYeon Oh
  • Patent number: 8167606
    Abstract: Disclosed herein is an apparatus and method for forming a panel. The apparatus includes a first mold unit may include a right-angled upper mold provided on the front portion of an upper mold to reciprocate vertically, and a right-angled lower mold provided on the front portion of a lower mold, thus compressing base materials to impart a pattern of a right triangular waveform. A second mold unit may include an obtuse upper mold provided on the central portion of the upper mold to reciprocate in a direction inclined relative to a progressing direction of the base materials, and an obtuse lower mold provided on the central portion of the lower mold, thus compressing the base materials to impart a pattern of an obtuse triangular waveform. A third mold unit may be provided behind the second mold unit and linearly presses the base materials in a direction from front to rear.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: May 1, 2012
    Assignee: Micro Contact Solution Co, Ltd.
    Inventor: Seung Eun Yang
  • Patent number: 8158047
    Abstract: A multi-ply tissue includes a first cellulosic embossed ply having an emboss pattern applied over a portion of its surface and a second cellulosic embossed ply of tissue. The first ply is contact laminated to the second ply so that the primary adhesion between the plies of tissue is the result of contact between cellulosic fibers. The first and second plies contact one another in contact areas, with the contact areas between the first and second plies defining compliant voids. The contact areas between the first ply and the second ply are elongated and/or rounded contact areas.
    Type: Grant
    Filed: August 10, 2010
    Date of Patent: April 17, 2012
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Galyn A. Schulz, Gary L. Worry, Kang Chang Yeh, Thomas N. Kershaw
  • Patent number: 8152958
    Abstract: A method of making a fabric-creped absorbent cellulosic sheet includes compactively dewatering a papermaking furnish to form a nascent web having an apparently random distribution of papermaking fiber, applying the dewatered web having the apparently random fiber distribution to a translating transfer surface moving at a first speed and fabric-creping the web from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a patterned creping fabric. The creping step occurs under pressure in a fabric creping nip defined between the transfer surface and the creping fabric. The creping fabric travels at a second speed slower than the speed of the transfer surface. The fabric pattern, nip parameters, velocity delta and web consistency are selected such that the web is creped from the transfer surface and redistributed on the creping fabric to form a web with a drawable reticulum.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: April 10, 2012
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Guy H. Super, Steven L. Edwards, Stephen J. McCullough, Frank C. Murray
  • Patent number: 8147649
    Abstract: A creping aid system for use on a creping cylinder, for example, a Yankee dryer, comprises a creping adhesive and a creping modifier, the combination comprising polyethylene.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: April 3, 2012
    Assignee: Clearwater Specialties LLC
    Inventors: Stephen H. Tucker, Douglas S. Smalley
  • Patent number: 8142614
    Abstract: The invention relates to a method for the production of a web of tissue paper, comprising the steps of: depositing a layer of an aqueous suspension of papermaking fibers on at least one forming fabric; reducing the water content of said layer until the amount in weight of the fibers in said layer is brought up to a first value; wet-embossing said layer in a nip between a pair of embossing rollers; and drying said embossed layer using a drying system to form a web of tissue paper.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: March 27, 2012
    Assignee: A. Celli Paper S.p.A.
    Inventor: Guglielmo Biagiotti
  • Patent number: 8133353
    Abstract: A creped paper product is provided according to the invention. The creped paper product comprises a result of creping a web of fibers comprising synthetic fibers to provide a creped paper product having a stretch of at least 3% in the machine direction according to TAPPI test T494. The web of fibers can include about 0.5 wt. % to 100 wt. % synthetic fibers based on the total weight of the fibers. In addition, the web of fibers can contain about 0.5 wt. % to about 10 wt. % of synthetic fibers and about 90 wt. % to about 99.5 wt. % of cellulosic fibers. When the web of fiber includes a mixture of synthetic fibers and cellulosic fibers, the creped paper product can be provided having a tear strength in the machine direction according to TAPPI test T494 at least 10% greater than an otherwise identical creped paper product that does not contain synthetic fibers. A method for forming a creped paper product is provided according to the invention.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: March 13, 2012
    Assignee: Wausau Paper Corp.
    Inventors: John James Blanz, Thomas Brod, Emerson S. Brooks
  • Patent number: 7959841
    Abstract: Uniformly dense, diamond-silicon carbide composites having high hardness, high fracture toughness, and high thermal stability are prepared by consolidating a powder mixture of diamond and amorphous silicon. A composite made at 5 GPa/1673K had a measured fracture toughness of 12 MPa·m1/2. By contrast, liquid infiltration of silicon into diamond powder at 5 GPa/1673K produces a composite with higher hardness but lower fracture toughness.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: June 14, 2011
    Assignee: Los Alamos National Security, LLC
    Inventor: Yusheng Zhao
  • Patent number: 7854046
    Abstract: A stationary working surface of a one roll microcreper member is of plastic resin having low wear and friction properties. As a primary pressing member subject to concentrated force it is 0.040 inch thick. One or both opposed retarder members of a bladed microcreper are of the plastic. Thermoplastics meeting wear and friction limits, e.g. ultra high density polyethylene, are employed. Primary extensions, some having openings, slots or holes serve as flexible retarders to engage treated material. By a load-spreading surface, the thermoplastic primary member is restrained without distortion. By this surface being linear it slideably inserts into a mounting. By this surface being parallel to the roll axis the primary member is free for cross-machine thermal expansion. A primary member shown is sheet form, mounted between sheet metal members, one with a restraint surface. Sheet materials of polyolefins, wood pulp, etc.
    Type: Grant
    Filed: January 8, 2007
    Date of Patent: December 21, 2010
    Assignee: Micrex Corporation
    Inventors: J. Drew Horn, Peter R. Smith, Richard C. Walton
  • Publication number: 20100252954
    Abstract: Disclosed herein is an apparatus and method for forming a panel. The apparatus includes a first mold unit may include a right-angled upper mold provided on the front portion of an upper mold to reciprocate vertically, and a right-angled lower mold provided on the front portion of a lower mold, thus compressing base materials to impart a pattern of a right triangular waveform. A second mold unit may include an obtuse upper mold provided on the central portion of the upper mold to reciprocate in a direction inclined relative to a progressing direction of the base materials, and an obtuse lower mold provided on the central portion of the lower mold, thus compressing the base materials to impart a pattern of an obtuse triangular waveform. A third mold unit may be provided behind the second mold unit and linearly presses the base materials in a direction from front to rear.
    Type: Application
    Filed: December 18, 2009
    Publication date: October 7, 2010
    Applicant: MICRO CONTACT SOLUTION CO., LTD.
    Inventor: Seung Eun Yang
  • Patent number: 7807086
    Abstract: A method of strengthening a boundary region between a first portion and a second portion of a fibrous body for absorbent articles. This boundary region is provided with a pattern of compressed spots, the amount of compression being gradually increasing in a direction leading away from an edge of the first portion of the fibrous body. Also, an apparatus for performing the method and an absorbent body having a strengthened boundary region.
    Type: Grant
    Filed: November 14, 2004
    Date of Patent: October 5, 2010
    Assignee: SCA Hygiene Products AB
    Inventor: Robert Perneborn
  • Patent number: 7744722
    Abstract: A creping aid system for use on a creping cylinder, for example, a Yankee dryer, comprises a creping adhesive and a creping modifier, the combination comprising polyethylene.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: June 29, 2010
    Assignee: Clearwater Specialties, LLC
    Inventors: Stephen H. Tucker, Douglas S. Smalley
  • Patent number: 7718035
    Abstract: An improved creping adhesive is prepared by first reacting a dibasic carboxylic acid, or its ester, half-ester, or anhydride derivative, with a polyalkylene polyamine, preferably in aqueous solution, under conditions suitable to produce a water soluble polyamide. The water-soluble polyamide is then reacted with an epihalohydrin until substantially fully cross-linked, and stabilized by acidification with phosphoric acid at the end of the polymerization reaction to form a water-soluble poly(aminoamide)-epihalohydrin creping adhesive that is re-wetable and facilitates water spray removal of buildup so as to lengthen the life of the creping blades, with attendant significant decrease in downtime and maintenance.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: May 18, 2010
    Assignees: Georgia-Pacific Consumer Products LP, Georgia-Pacific Chemicals LLC
    Inventors: Jeffery J. Boettcher, Nancy S. Clungeon, Hung Liang Chou, Clay E. Ringold, Dexter C. Johnson
  • Patent number: 7704349
    Abstract: A process for making absorbent cellulosic paper products such as sheet for towel, tissue and the like, includes compactively dewatering a nascent web followed by wet belt creping the web at an intermediate consistency of anywhere from about 30 to about 60 percent under conditions operative to redistribute the fiber on the belt, which is preferably a fabric. In preferred embodiments, the web is thereafter adhesively applied to a Yankee dryer using a creping adhesive operative to enable high speed transfer of the web of intermediate consistency such as a poly(vinyl alcohol)/polyamide adhesive. An absorbent sheet so prepared from a papermaking furnish exhibits an absorbency of at least about 5 g/g, a CD stretch of at least about 4 percent, and an MD/CD tensile ratio of less than about 1.1, and also exhibits a maximum CD modulus at a CD strain of less than 1 percent and sustains a CD modulus of at least 50 percent of its maximum CD modulus to a CD strain of at least about 4 percent.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: April 27, 2010
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Steven L. Edwards, Guy H. Super, Stephen J. McCullough, Dean J. Baumgartner, Richard W. Eggen, David P. Duggan, Jeffrey E. Krueger, David W. Lomax, Colin A. Jones
  • Patent number: 7670979
    Abstract: A porous refractory product includes a matrix of sintered silicon carbide having a porosity of about 45% to about 65%. The matrix is formed by heating in a noble gas atmosphere a cast preform including a mixture of alpha-silicon carbide and boron carbide each having a particle size of less than about 1 micron. The heating causes the formation of gaseous SiO within the silicon carbide matrix, which, in turn, forms pores having an average size of less than about 1 micron. The porous refractory products herein are suitable for use in a variety of applications including for use in high temperature particulate filtering applications.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: March 2, 2010
    Assignee: CerCo LLC
    Inventors: Tariq Quadir, Corey Dunn
  • Publication number: 20090234432
    Abstract: Polymer stents with break-away links and methods of forming the links for improved stent retention on an expandable member during delivery are disclosed.
    Type: Application
    Filed: March 12, 2008
    Publication date: September 17, 2009
    Inventors: Stephen D. Pacetti, Timothy A. Limon, Yunbing Wang
  • Patent number: 7442278
    Abstract: A method of making a cellulosic web includes: forming a nascent web from a papermaking furnish, the nascent web having a generally random distribution of papermaking fiber; b) transferring the web having a generally random distribution of papermaking fiber to a translating transfer surface moving at a first speed; drying the web to a consistency of from about 30 to about 60 percent including compactively dewatering the web prior to or concurrently with transfer to the transfer surface; fabric-creping the web from the transfer surface at a consistency of from about 30 to about 60 percent utilizing a creping fabric with a patterned creping surface, the fabric creping step occurring under pressure in a fabric creping nip defined between the transfer surface and the creping fabric wherein the fabric is traveling at a second speed slower than the speed of said transfer surface, the fabric pattern, nip parameters, velocity delta and web consistency being selected such that the web is creped from the transfer surfac
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: October 28, 2008
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Frank C. Murray, Greg A. Wendt, Steven L. Edwards, Stephen J. McCullough, Guy H. Super
  • Patent number: 7399378
    Abstract: A process for making absorbent cellulosic paper products such as sheet for towel, tissue and the like, includes compactively dewatering a nascent web followed by wet belt creping the web at an intermediate consistency of anywhere from about 30 to about 60 percent under conditions operative to redistribute the fiber on the belt, which is preferably a fabric. In preferred embodiments, the web is thereafter adhesively applied to a Yankee dryer using a creping adhesive operative to enable high speed transfer of the web of intermediate consistency such as a poly(vinyl alcohol)/polyamide adhesive. An absorbent sheet so prepared from a papermaking furnish exhibits an absorbency of at least about 5 g/g, a CD stretch of at least about 4 percent, and an MD/CD tensile ratio of less than about 1.1, and also exhibits a maximum CD modulus at a CD strain of less than 1 percent and sustains a CD modulus of at least 50 percent of its maximum CD modulus to a CD strain of at least about 4 percent.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: July 15, 2008
    Assignee: Georgia-Pacific Consumer Products LP
    Inventors: Steven L. Edwards, Guy H. Super, Stephen J. McCullough, Dean J. Baumgartner, Richard W. Eggen, David P. Duggan, Jeffrey E. Krueger, David W. Lomax, Colin A. Jones
  • Publication number: 20070267778
    Abstract: A rib forming apparatus has an elongated support table, a supply of thermoplastic sheet material over the table, a transporting means having at least two transverse carriages mounted on the table to slide along longitudinal edges thereof, a thermal means mounted on one of the carriages for locally heating the sheet material in preparation of a molding press, and at least one press module mounted on another carriage and having a reciprocating press blade positioned at one flat side of the sheet material and a couple of swiveling press blades positioned at the opposite flat side of the sheet material and movable toward the reciprocating press blade to mold the heated section of the sheet material by closing the above three press blades toward each other, whereby a series of vertical rib folds are formed transversely of the sheet material and advanced by the transport means through the closed press blades.
    Type: Application
    Filed: July 29, 2006
    Publication date: November 22, 2007
    Inventor: Bill Dworzan
  • Patent number: 7097803
    Abstract: The present invention is to provide a process of making a corrugated net material including the following steps. First prepare a net material with an adequate length, and then heat and soften the net material by means of a heating element. March the soften net material through a gap formed by two press rollers which rotate in relative direction such that the softened net material is pressed by the two press rollers flatly. March the pressed flat net material continuously into a vessel such that the flat net material is cumulated in the vessel and squeezed by itself to form a plurality of non-directional bends. Lastly, release the squeezed net material from the vessel such that the corrugated net material is thus obtained.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: August 29, 2006
    Inventor: Che-Yuan Chang
  • Patent number: 7090792
    Abstract: A group of multiple hollow fibers may be shaped to introduce angular divergence among the fibers, or to introduce a selected longitudinal oscillation into the fibers. In one shaping technique, the fibers are held in parallel while upper and lower crimping assemblies of parallel crimping bars are drawn together on opposite sides of the parallel fibers. When bars of the opposing assemblies draw sufficiently close, they sandwich the fibers in between them, causing each fiber to assume a shape that oscillates as the fiber repeatedly goes over and then under successive bars. Since the crimping bars are aligned at oblique angles to the fibers, the peaks and troughs of successive fibers are offset. While in this position, the fibers are heated and then cooled to permanently retain their shapes. A different shaping technique utilizes a lattice of criss-crossing tines defining multiple apertures. In this technique, the lattice and fibers are positioned so that each fiber passes through one of the apertures.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: August 15, 2006
    Assignee: Alsius Corporation
    Inventors: David P. Balding, Steven C. Foster
  • Patent number: 7022201
    Abstract: A composite fabric comprising a necked and creped spunbond nonwoven web of monocomponent fibers hydraulically entangled with a fibrous component that comprises cellulosic fibers. The nonwoven web contains thermoplastic fibers and the fibrous component comprises greater than about 50% by weight of the fabric.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: April 4, 2006
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Ralph Lee Anderson, Eugenio Go Varona
  • Patent number: 6997969
    Abstract: A filter is provided including a synthetic filter material formed into a filter structure and having at least one embossment having a depth of at least about 1.5 mm, preferably at least about 4.0 mm, and more preferably at least about 5.0 mm. A method for making the filter is also provided, and results in a filter which is formed without rupture of the material.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: February 14, 2006
    Assignee: LPD Technologies
    Inventors: Dirk Dieter Hans Ter Horst, Hans Joachim Lippold
  • Patent number: 6974520
    Abstract: This invention is directed to formation of a creped nonwoven web. The creped web is formed in a creping process using a polymer emulsion binder formed in an alkylphenol ethoxylate-free surfactant system. The surfactant system comprises a combination of a specific active anionic surfactant (sodium laureth sulfate containing 1 to 12 moles of ethylene oxide) and a specific active nonionic surfactant (a secondary alcohol ethoxylate containing 7 to 30 moles of ethylene oxide or an ethoxylated branched primary alcohol containing 3 to 30 moles of ethylene oxide.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: December 13, 2005
    Assignee: Air Products Polymers, L.P.
    Inventors: Joel Erwin Goldstein, Ronald Joseph Pangrazi
  • Patent number: 6958103
    Abstract: An entangled fabric that contains a nonwoven web hydraulically entangled with a fibrous component is provided. The nonwoven web is formed from staple fibers and is creped. For example, in one embodiment, the nonwoven web is a creped, point bonded, carded web. Excellent liquid handling properties can be achieved in accordance with the present invention without resulting in the poor liquid handling capabilities often associated with point bonded nonwoven webs. In fact, the entangled fabric of the present invention can have improved bulk, softness, and capillary tension.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: October 25, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Ralph L. Anderson, Eugenio G. Varona
  • Patent number: 6908524
    Abstract: This invention is directed to formation of a creped nonwoven web. The creped web is formed in a creping process using a polymer emulsion binder formed in an alkylphenol ethoxylate-free surfactant system. The surfactant system comprises a combination of a specific active anionic surfactant (sodium laureth sulfate containing 1 to 12 moles of ethylene oxide) and a specific active nonionic surfactant (a secondary alcohol ethoxylate containing 7 to 30 moles of ethylene oxide or an ethoxylated branched primary alcohol containing 3 to 30 moles of ethylene oxide.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: June 21, 2005
    Assignee: Air Products Polymers, L.P.
    Inventors: Joel Erwin Goldstein, Ronald Joseph Pangrazi
  • Patent number: 6846383
    Abstract: The present invention is generally directed to paper products having great softness and strength. The paper products are formed from a paper web that can be made according to various methods. In one embodiment, the paper web is an uncreped through-air dried web. The web can contain softwood fibers in combination with high-yield fibers. For example, the high-yield fibers can be contained in the middle layer of a stratified fiber furnish. In accordance with the present invention, a first bonding material is applied to a first side of the web and a second bonding material is applied to a second side of the paper web. The bonding materials are applied according to preselected patterns. At least one side of the paper web is creped after one of the bonding materials is applied. The bonding material applied to the creped side of the web can be an adhesive selected that allows the web to be creped at relatively low temperatures.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: January 25, 2005
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Maurizio Tirimacco
  • Publication number: 20040238135
    Abstract: A process for making absorbent cellulosic paper products such as sheet for towel, tissue and the like, includes compactively dewatering a nascent web followed by wet belt creping the web at an intermediate consistency of anywhere from about 30 to about 60 percent under conditions operative to redistribute the fiber on the belt, which is preferably a fabric. In preferred embodiments, the web is thereafter adhesively applied to a Yankee dryer using a creping adhesive operative to enable high speed transfer of the web of intermediate consistency such as a poly(vinyl alcohol)/polyamide adhesive. An absorbent sheet so prepared from a papermaking furnish exhibits an absorbency of at least about 5 g/g, a CD stretch of at least about 4 percent, and an MD/CD tensile ratio of less than about 1.1, and also exhibits a maximum CD modulus at a CD strain of less than 1 percent and sustains a CD modulus of at least 50 percent of its maximum CD modulus to a CD strain of at least about 4 percent.
    Type: Application
    Filed: October 6, 2003
    Publication date: December 2, 2004
    Inventors: Steven L. Edwards, Guy H. Super, Stephen J. McCullough, Dean J. Baumgartner, Richard W. Eggen, David P. Duggan, Jeffrey E. Krueger, David W. Lomax, Colin A. Jones
  • Patent number: 6808597
    Abstract: Methods for making creping adhesives and using them in the creping of cellulosic fiber webs. The creping adhesives are a combination of polyamine-epihalohydrin and poly(vinyl alcohol). The method comprises the preparation and application of the creping adhesives to attain strong adhesion of fiber webs onto a drying surface, and the creping of the fiber webs to obtain a soft, bulky tissue paper web.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: October 26, 2004
    Assignee: Hercules Incorporated
    Inventor: Anthony J. Allen
  • Patent number: 6802924
    Abstract: The present invention is generally directed to base webs that are creped after a bonding material has been applied to at least one side of the web according to a predetermined pattern. According to the present invention, the bonding material contains a creping adhesive mixed with composite particles. The composite particles generally have a median particle size of less than about 5 microns and a particle size distribution of less than about 10 microns.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: October 12, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Joseph F. Merker, Ralph L. Anderson, Thomas C. Saffel, James W. Clark, Reginald Smith
  • Patent number: 6797226
    Abstract: A method for forming a wiping product. In particular, the wiping product contains a fabric formed from a nonwoven web that is bonded by microcreping at least one side of the web. The nonwoven web can contain melt-spinnable fibers, such as polyolefins, as well as various other fibers, such as pulp fibers, staple fibers, etc. For example, the nonwoven web can contain at least about 20% by weight of polyolefin fibers. By bonding the web using microcreping, the resulting bulk, absorption capacity, and softness of the fabric can be improved.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: September 28, 2004
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventor: Patricia A. Annable
  • Publication number: 20040118534
    Abstract: A creping composition including a crosslinkable polymer that releases formaldehyde during crosslinking, a filler material and a water-soluble glycol compound is disclosed. Also disclosed is a creped material including the creping composition and a process for making the same.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 24, 2004
    Inventor: Ralph Lee Anderson
  • Patent number: 6709548
    Abstract: A creping blade for creping a cellulosic web from a rotatable cylinder in a creping process includes first and second side faces. The first side face is at least substantially opposite to the second side file. The blade also includes an upper surface adjacent to the first and second side faces. A plurality of notches is provided along the upper surface. Each of the notches has a bottom portion and an open end defined by at least a portion of the upper surface. The notches are configured to increase the caliper of the cellulosic web when the creping blade crepes the cellulosic web from an outer surface of the rotatable cylinder. Creped paper and improved methods of manufacturing paper are also provided.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: March 23, 2004
    Assignee: Fort James Corporation
    Inventors: Robert J. Marinack, Anthony O. Awofeso, Frank D. Harper, Thomas N. Kershaw
  • Patent number: 6689250
    Abstract: Disclosed are adhesive formulations as creping process aids for producing an absorbent creped cellulosic sheet having a high level of surface-perceived softness that comprises continuously forming a web of cellulosic papermaking fibers, adhering said web to a thermal drying means by means of adhesive compositions comprising polymers having at least one primary or secondary amine group in the backbone such as chitosan, plolyvinylamine, polyvinyl alcohol-vinyl amine and polyaminoamide in combination with crosslinking agents such as zirconium compounds having a valence of plus four including ammonium zirconium carbonate, zirconium acetylacetonate, zirconium acetate, zirconium carbonate, zirconium sulfate, zirconium phosphate, potassium zirconium carbonate, zirconium sodium phosphate and sodium zirconium tartrate and creping said treated web from said thermal drying means.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: February 10, 2004
    Assignee: Fort James Corporation
    Inventors: Phuong Van Luu, Cristian M. Neculescu, Dawn M. Mews
  • Patent number: 6663942
    Abstract: Disclosed are adhesive formulations as creping process aids for producing an absorbent creped cellulosic sheet having a high level of surface-perceived softness that comprises continuously forming a web of cellulosic papermaking fibers, adhering said web to a thermal drying means by means of adhesive compositions comprising polymers having at least one primary or secondary amine group in the backbone such as chitosan, plolyvinylamine, polyvinyl alcohol-vinyl amine and polyaminoamide in combination with crosslinking agents such as zirconium compounds having a valence of plus four including ammonium zirconium carbonate, zirconium acetylacetonate, zirconium acetate, zirconium carbonate, zirconium sulfate, zirconium phosphate, potassium zirconium carbonate, zirconium sodium phosphate and sodium zirconium tartrate and creping said treated web from said thermal drying means.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: December 16, 2003
    Assignee: Fort James Corporation
    Inventors: Phuong Van Luu, Cristian M. Neculescu, Dawn M. Mews