Paper Base Patents (Class 427/395)
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Patent number: 6335058Abstract: A method of manufacturing a finished product from a length of a lignocellulosic material, such as a length of solid wood or chip board, includes the steps of impregnating the length of lignocellulosic material through its depth with an impregnating composition comprising a mineral oil, a non-aqueous solvent for the material oil such as dichloromethane or super critical carbon dioxide, and a thermosetting resin and, if necessary, a catalyst therefore dissolved in the mineral oil and solvent. Thereafter, the non-aqueous solvent is removed and the product is subjected to an elevated temperature to polymerize the thermosetting resin to bind the mineral oil into the lignocellulosic material.Type: GrantFiled: December 10, 1999Date of Patent: January 1, 2002Assignee: Windsor Technologies LimitedInventor: Michael Windsor Symons
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Patent number: 6335060Abstract: The present invention provides a curable treating agent and a curing treatment process which provide excellent results with regard to any of heat resistance, water resistance, surface physical properties, and impregnability, and further, involve high productivity. The electron-beam-curable treating agent according to the present invention comprises a high boiling point resin in a ratio of not lower than 10 weight %, and is characterized in that the high boiling point resin includes a high boiling point radical-polymerizable component in a ratio of higher than 90 weight %, wherein the high boiling point radical-polymerizable component includes a specific acrylic derivative in a ratio of not lower than 5 weight %. The electron beam curing treatment process according to the present invention is characterized by comprising the step of irradiating a treating agent with an electron beam under specific conditions, wherein the treating agent includes a specific acrylic derivative.Type: GrantFiled: May 26, 2000Date of Patent: January 1, 2002Assignee: Nippon Shokubai Co., Ltd.Inventor: Rie Inoue
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Patent number: 6287641Abstract: The invention comprises a method for applying a curable resin such as a photosensitive resin, to a substrate such as a papermaker's dewatering felt. The method comprises the steps of providing a curable liquid resin, providing a substrate having a first surface and a second surface, the substrate comprising fibers defining voids intermediate the first and second surfaces, and the substrate comprising a second material different from the curable liquid resin, the second material coating at least some of the fibers, wherein the voids adjacent the coated fibers provide fluid communication from the first surface of the substrate to the second surface of the substrate; removing at least some of the second material coating at least some of the fibers; applying the curable liquid resin to the substrate; and curing at least some of the resin to provide a resin layer on the substrate.Type: GrantFiled: August 22, 1996Date of Patent: September 11, 2001Assignee: The Procter & Gamble CompanyInventors: Ward William Ostendorf, Robert Stanley Ampulski
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Patent number: 6274660Abstract: The present invention relates to a coating composition featuring increased solids contents, which comprises at least one polyol I obtainable by subjecting at least one oligomer of the general formula I R1R2C═[═CH—R—CH═]n—CR3R4 (I) in which R=—(—CH2—)m—, in which the index m is an integer from 2 to 6, or in which X=—CH2— or an oxygen atom R1,R2,R3 and R4 independently of one another=hydrogen atoms or alkyl; and the index n=an integer from 1 to 15; to hydroformylation and reducing the resultant aldehyde-functional products I to give the polyols I, which, if desired, are subjected to partial or complete hydrogenation.Type: GrantFiled: February 3, 1999Date of Patent: August 14, 2001Assignee: BASF Coatings AGInventors: Edgar Zeller, Peter Schwab, Peter-Heinz Rink, Hubert Baumgart, Edeltraud Hagemeister, Thomas Farwick
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Publication number: 20010008688Abstract: A process for producing a silica-alumina composite sol, which comprises mixing a silica hydrogel and an aluminum salt which, when dissolved in water, gives an acidic solution.Type: ApplicationFiled: December 26, 2000Publication date: July 19, 2001Applicant: Asahi Glass Company, LimitedInventors: Katsumasa Nakahara, Hisao Inokuma, Hachirou Hirano, Toshiya Matsubara, Masako Wakabayashi, Yoshinori Kon
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Patent number: 6258409Abstract: A method for sealing the edges of a filter sheet (10) with wax to create a fluid-impermeable wax seal (11) enclosing a non-sealed portion (12). The method includes applying melted wax to the edges of the filter sheet, heating the treated filter sheet such that the wax permeates through the edges thereof, and then allowing the filter sheet to cool such that the wax congeals. The wax of the fluid-impermeable wax layer (11) has a durometer reading of about 75 to about 100 Shore A hardness at 25° C. and 85° C., a melt point of about 110° C. to about 180° C., a viscosity of less than about 100 cp at 155° C. and preferably includes ethylene bis stearamide. The wax layer increases the useful life of the filter sheet while providing a sheet which is easily released from a filter press and which retains integrity along the seal during repeated hot water sanitations.Type: GrantFiled: September 7, 2000Date of Patent: July 10, 2001Assignee: Cuno IncorporatedInventors: Richard D. Sale, Mark W. Schimmel, Richard A. Prince, Norbert Roessler
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Publication number: 20010005550Abstract: The invention relates to a method of producing a laminated packaging material including a core layer of paper or paperboard and a barrier layer applied on one side of the core layer. The invention also relates to a laminated packaging material produced according to the method, as well as a packaging container which is produced from the laminated packaging material.Type: ApplicationFiled: February 16, 2001Publication date: June 28, 2001Inventors: Jorgen Bengtsson, Matts Bentmar, Mikael Berlin, Ib Leth
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Patent number: 6242047Abstract: A coated paper product having high gloss and brightness is prepared by a process wherein a paper substrate is coated on at least one side with an aqueous coating formulation comprising an effective amount of a plastic pigment, and finished in a supercalender device containing heated rolls to produce a surface which is comparable to a cast coated surface.Type: GrantFiled: April 12, 1999Date of Patent: June 5, 2001Assignee: Westvaco CorporationInventors: Dean R. Johnson, Eric D. Johnson, James E. Shultz
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Patent number: 6221434Abstract: A surface treatment method for imparting -oil- and/or water-repellency, comprising the step of applying to the surface to be treated compositions comprising at least one compound having the formula III ACF2O—(CF2O)n(C2F4O)m—CF2—B III where n=1-20, m=1-20 and A and B are reactive functional groups chosen independently from the group constituted by: a) CONHR, where R=CnH2n+1 with n=1-30, b) CH2OH, c) CONH(X)SiR1n(OR′)3−n, where n=0-2, R1 and R′, identical or different, are CrH2r+1 alkyl radicals, where r=1-4, and X is a bifunctional alkyl spacer of the (CHR″)m type, where m=1-20, and R″ can be H or CH3, optionally containing heteroatoms, d) —[CH2O(R′″O)p]k—P(O)(OH)3−k, where R′″ is an alkylene radical, for example C2H4 or C3H6, p=1-10 and k=1, 2, the composition comprising the compound at a suitable concentration and being aType: GrantFiled: November 29, 1999Date of Patent: April 24, 2001Assignee: Ausimont S.p.A.Inventors: Mario Visca, Silvana Modena, Simonetta Fontana, Giovanni Gavazzi
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Patent number: 6217940Abstract: Method and apparatus for coating a moving paperboard web with at least two coating layers. A first coating layer is applied onto the surface of the web and a second coating layer is applied onto the surface of this first undried coating layer. The first coating layer is applied by means of a film transfer coater and the second coating layer is applied by means of a nozzle applicator, whereby the first layer is neither mixed nor doctored off the web during the application of the second layer.Type: GrantFiled: May 21, 1999Date of Patent: April 17, 2001Assignee: Valmet CorporationInventor: Stefan Kuni
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Patent number: 6207227Abstract: A cleaning sheet with a tacky surface coating is used to clean feed rollers in copying machines or similar equipment and similarly-coated cloths are used for the removal of particles from other surfaces to be cleaned. The cleaning articles are made by printing the tacky material on sheet material such as paper or cloth. Relatively thick layers of tacky material are applied quickly and economically by the use of a multi-stage printing press which builds up a thick layer from a plurality of thin layers.Type: GrantFiled: September 18, 1998Date of Patent: March 27, 2001Assignee: The Texwipe Company LLCInventors: Peter B. Russo, Barry M. Scott
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Patent number: 6197383Abstract: The present invention features coating compositions and methods for improving the quality of images printed on a paper substrate. The novel coating compositions contain a coating agent comprising a mixture of a polyacid and a polybase. When applied to a sized paper substrate, the coating compositions provide a coated paper substrate that provides high quality printed images when printed with an ink containing a reactive dye having ionizable and/or nucleophilic groups capable of reacting with the coating agent. Images printed on a paper substrate coated with the coating composition of the invention are bleed-resistant, water-resistant (e.g., water-fast), and/or are characterized by an enhanced chroma and hue.Type: GrantFiled: March 31, 1999Date of Patent: March 6, 2001Assignee: SRI InternationalInventor: Asutosh Nigam
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Patent number: 6197380Abstract: A lactide polymer coating resulting in a strong, repulpable, high gloss, paper coating. The lactide polymer comprises a plurality of poly(lactide) polymer chains, residual lactide in concentration of less than about 5 percent and water in concentration of less than about 2000 parts-per-million. A process for coating paper with the lactide polymer composition is also disclosed.Type: GrantFiled: April 6, 1999Date of Patent: March 6, 2001Assignee: Cargill, IncorporatedInventors: Patrick Richard Gruber, Jeffrey John Kolstad, Christopher M. Ryan, Eric Stanley Hall, Robin Sue Eichen Conn
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Patent number: 6162541Abstract: Superabsorbent polymer compositions comprising a fiber-containing composition derived from cellulosic fibers, synthetic fibers or mixtures thereof which is at least partially coated with a partially acidified, hydrolyzed, internally plasticized, crosslinked, superabsorbing polymers derived from polysuccinimide and processes for preparing same.Type: GrantFiled: November 16, 1998Date of Patent: December 19, 2000Assignee: Solutia Inc.Inventors: Yueting Chou, Timothy Paul Feast, Jingen Zhang
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Patent number: 6153040Abstract: A process for reducing rollups in gypsum board panels when the panels are laminated with a laminate, is provided. A laminator is provided, as is at least one gypsum board panel, each panel having a face paper layer and a backing paper layer. Each paper layer has a coefficient of friction, and at least one of the face paper layer and the backing paper layer is treated with an agent for reducing the coefficient of friction and water absorbency. Next, a supply of laminate is provided and installed in the laminator. Then, at least one panel of the gypsum board is fed through the laminator, so that a layer of the laminate is applied thereon.Type: GrantFiled: May 15, 1998Date of Patent: November 28, 2000Assignee: United States Gypsum CompanyInventors: Evan V. Rohlf, Dick C. Engbrecht, Mark B. Scalf
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Patent number: 6136215Abstract: A fiber treatment composition is disclosed. The composition contains siloxanes having amine-, polyol, and amide-functionalities. The composition provides good hand, resistance to yellowing, and hydrophilicity to the fibers. The composition is preferably formulated as an aqueous emulsion. Applying the composition to textile fabrics produces treated fabrics having good hydrophilicity, good hand, and resistance to yellowing.Type: GrantFiled: September 2, 1999Date of Patent: October 24, 2000Assignees: Dow Corning Corporation, Dow Corning, LimitedInventors: Martin John Evans, Howard Edwin Griffin, Linda Denise Kennan, Michael Ward Skinner, Kenneth Edward Zimmerman
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Patent number: 6136371Abstract: A method and apparatus for making masking tape is provided. A hot melt or thermoplastic adhesive having no added foaming agents, blowing agents, or surfactants is applied to a paper backing having a moisture content, wherein the adhesive is at a temperature near or below the boiling point of water. The adhesive-coated tape is then advanced to a heating device and heat is applied thereto such that the moisture present in the tape is vaporized and dispersed throughout the adhesive to give the adhesive a foam-like quality.Type: GrantFiled: February 10, 2000Date of Patent: October 24, 2000Assignee: Shurtape Technologies, Inc.Inventors: Muzaffer Fidan, Donald H. Lackey
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Patent number: 6132803Abstract: A tissue which has at least one fibrous ply. A hydrophobically treated foam stratum is placed on at least one of the fibrous plies in order to prevent the penetration of moisture through the tissue. A hydrophobically treated foam can also be impregnated into one or more fibrous plies in order to provide a barrier to the penetration of moisture through the tissue. The invention also comprises a process for making tissue with a foam moisture barrier.Type: GrantFiled: April 7, 1999Date of Patent: October 17, 2000Assignee: The Procter & Gamble CompanyInventors: Stephen Robert Kelly, Jay Kiyoshi Sato
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Patent number: 6123996Abstract: The present invention relates to an aqueous composition for coating, such as sizing or application of a layer of a coating slip, of cellulose-based two-dimensional products. The composition has improved properties at increased temperatures and at high shear rates. These properties are achieved by using as a thickening agent a cellulose ether which is substituted with hydroxyalkyl groups, such as hydroxyethyl and hydroxypropyl, and alkyl groups having 1-3 carbon atoms, and which has a cloud point in the range from 35 C. to 80 C.Type: GrantFiled: February 23, 1999Date of Patent: September 26, 2000Assignee: Akzo Nobel Surface Chemistry ABInventors: Kerstin Larsson, Erland Hermansson, Dan Eklund, Peter Dahlvik
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Patent number: 6117491Abstract: The present invention concerns a process and a coating color for coating a cellulosic web. According to the process an aqueous coating color is applied on the surface of the web. The invention comprises using a coating color which contains an aqueous polymer whose viscosity in an aqueous solution increases when the temperature rises. Preferably, methylcellulose or a corresponding polymer having a gelling temperature of about 5 to 10 .degree. C. more than the application tempature of the coating color is used. The temperature of the coating is increased after the application of the coating color in order to achieve gelling of the polymer. As a result, the coating color rapidly solidifies which decreases the amount of mixture being recycled and it reduces mist-formation in the film press method and improves coverage of coating applied by conventional blade coating.Type: GrantFiled: January 13, 1998Date of Patent: September 12, 2000Assignee: Metsa-Serla OyInventors: Anne Rutanen, Petri Silenius, Jyrki Kettunen
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Patent number: 6077392Abstract: A printing paper is provided having the appearance of uncoated paper and improved printability properties approaching those of coated papers. Also provided are a surface treatment formulation having a variable viscosity and a method for producing a printing paper having the appearance of uncoated paper and improved printability properties approaching those of coated papers.Type: GrantFiled: November 3, 1997Date of Patent: June 20, 2000Assignee: Mohawk Paper Mills, Inc.Inventor: Thomas D. Ruch
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Patent number: 6074528Abstract: A printing paper is provided having the appearance of uncoated paper and improved printability properties approaching those of coated papers. Also provided are a surface treatment formulation having a variable viscosity and a method for producing a printing paper having the appearance of uncoated paper and improved printability properties approaching those of coated papers.Type: GrantFiled: November 3, 1997Date of Patent: June 13, 2000Assignee: Mohawk Paper Mills, Inc.Inventor: Thomas D. Ruch
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Patent number: 6054170Abstract: A combined business form/identification card includes a sheet of cellulosic stock material having a barrier coating on a first portion of the sheet with an overlay of laser-printable varnish on the barrier coat. Lines of weakness are provided in the sheet in the area of the barrier coat and varnish to produce an identification card detachable from the sheet. A second portion of the sheet has indicia imaged thereon.Type: GrantFiled: June 29, 1998Date of Patent: April 25, 2000Assignee: Moore U.S.A., Inc.Inventors: Stanley C. Chess, Myron C. Heeb, Scott A. Moeller, Michael C. Maier, Thomas P. Nash
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Patent number: 6042639Abstract: Fire retarding and smoke inhibiting aqueous composition and a method for a one-step impregnation of aqueous-absorbable--and normally inflammable materials, such as wood, paper and textiles, said composition comprising ammoniumphosphates, phosphoric acid, water soluble metal salts with ability to form water insoluble salts with phosphate ions and/or ammoniumphosphate ions, and other optional additives.The composition comprises in combination:0.5-90% by weight monoammoniumphosphate and/or diammoniumphosphate,0.1-30% water-soluble metal salts with ability to form water insoluble salts with phosphate ions and/or ammoniumphosphate ions,1-20% by weight acid especially phosphoric acid (85%),1-15 % by weight dicyandiamide, andoptionally up to 5% by weight additivesin a total concentration of from 1 to 50% by weight with respect to the total weight of the aqueous solution, whereby phosphoric acid and dicyandiamide are present in the form of the reaction product guanylureaphosphate.Type: GrantFiled: August 4, 1998Date of Patent: March 28, 2000Assignee: Fireguard Scandinavia ASInventors: Arve Valso, Egil Kleven
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Patent number: 6027804Abstract: Superabsorbent polymer compositions comprising a fiber-containing composition derived from cellulosic fibers, synthetic fibers or mixtures thereof which is at least partially coated with a partially hydrolyzed, internally plasticized, crosslinked, superabsorbing polymer derived from polysuccinimide and processes for preparing same.Type: GrantFiled: November 17, 1998Date of Patent: February 22, 2000Assignee: Solutia Inc.Inventors: Yueting Chou, Timothy Paul Feast, Jingen Zhang
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Patent number: 6025027Abstract: A method for producing an improved fire retarding compound for use with cellulose insulation materials uses the same concept as boric acid and borax, but substitutes liquid borates rather than powdered borates. Such liquid borates enables the amount of chemical to be reduced by approximately fifty percent. This offsets the high cost of the use of borates. Additionally, the inexpensive borate, borax, is the only boron containing chemical used in the present invention method and it is converted to boric acid once impregnated inside the cellulose insulation material.Type: GrantFiled: April 26, 1999Date of Patent: February 15, 2000Assignee: Mountain DevelpomentInventor: Thomas Clifford Shutt
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Patent number: 5985367Abstract: A process for preparing a coated printing paper by applying a coating solution containing a pigment and an adhesive to a base paper, which comprises coating the base paper with the coating solution containing 30 to 90% by weight, based on 100% by weight of pigment components, of rice grain- or spindle-shaped precipitated calcium carbonate as a pigment component, the precipitated calcium carbonate being produced by slaking calcium oxide with a white liquor, followed by causticization with a green liquor, at a causticizing step during pulp production by the sulfate process or the soda process; whereby the coated printing paper free from uneven gloss, mottling, and trapping unevenness, and excellent in ink drying properties and operability with a blade coater is provided.Type: GrantFiled: September 14, 1998Date of Patent: November 16, 1999Assignee: Nippon Paper Industries Co., Ltd.Inventors: Eiji Nishijima, Yuji Sato, Yasunori Nanri, Shoichi Miyawaki
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Patent number: 5952091Abstract: A web printing paper, including a coating base paper which contains mineral filler and at least one of wood pulp and cellulose as fiber components. The coating base paper has a grammage of 30 to <58 g/m.sup.2, and a filler content, relative to its grammage, equal to 15 to 35% by weight. The coating base paper selectively contains, in addition to the at least one of wood pulp and cellulose, up to <50% by weight recycled fibers, all weight parts adding up to 100% by weight. The printing paper further includes a coating applied to both sides of the base paper by a film press so as to absorb printing ink. The coating contains pigment and binder. The coating on each side of the base paper has a grammage of 2 to 12 g/m.sup.2, and the pigment of the coating has a grain size, 40 to 60% by weight, of <2 .mu.m.Type: GrantFiled: September 30, 1996Date of Patent: September 14, 1999Assignee: Stora Feldmuhle AGInventors: Dieter Horand, Adam Gurtler, Bernd Pelech, Paul-Heinz Dahling
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Patent number: 5922400Abstract: An aqueous correction fluid is provided including an opacifying agent, including a first opacifying pigment selected to provide hiding power and a second opacifying pigment selected to provide suspension redispersability, a cationic film-forming polymer, a nonionic film-forming polymer, and a dispersing agent.Type: GrantFiled: January 9, 1997Date of Patent: July 13, 1999Assignee: The Gillette CompanyInventors: Chiou C. Yau, Kim H. Ng, Norman G. Sanborn
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Patent number: 5916630Abstract: Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets. The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets from a transfer belt (71).Type: GrantFiled: October 23, 1997Date of Patent: June 29, 1999Assignee: Minnesota Mining And Manufacturing CompanyInventors: Frederic Pierre Alain Le Riche, Bernard Raymond Pierre, Gregory Francis Stifter, Mark Steven Vogel
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Patent number: 5902453Abstract: A printing paper is provided having the appearance of uncoated paper and improved printability properties approaching those of coated papers. Also provided are a surface treatment formulation having a variable viscosity and a method for producing a printing paper having the appearance of uncoated paper and improved printability properties approaching those of coated papers.Type: GrantFiled: September 30, 1996Date of Patent: May 11, 1999Assignee: Mohawk Paper Mills, Inc.Inventor: Thomas D. Ruch
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Patent number: 5885340Abstract: A method of producing a multiple coated cellulosic sheet product having a surface which is smooth, bright and capable of being printed upon, includes the steps of coating a substrate comprising a cellulosic sheet with a first layer of an inorganic pigment-containing aqueous coating composition, and coating the first layer with a second layer of an inorganic pigment-containing aqueous coating composition to form a product in which the first layer is bonded to the cellulosic sheet and the second layer is bonded to and inseparable from the first layer, wherein there is incorporated into the first layer a sizing agent in an amount of up to 0.6% by weight based on the dry weight of the pigment present in the first layer. The sizing agent is selected from alkene ketene dimers, alkenyl succinic anhydrides, and anionic polyurethane sizes.Type: GrantFiled: October 27, 1997Date of Patent: March 23, 1999Assignee: ECC International Ltd.Inventors: David Frederick Bailey, John Claude Husband, Ulrika Reimer
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Patent number: 5885719Abstract: The invention relates to an impregnated sheet. It is impregnated with a composition containing, as a mixture, a crosslinkable polymer having a glass transition temperature of between -10.degree. and 35.degree. C., used in the form of a stable aqueous dispersion, other than a styrene/ethyl acrylate/butyl acrylate copolymer, and a water-soluble binder. According to the invention, the water-soluble binder is chosen from poly(vinyl alcohol), gelatin, starches, cellulose derivatives, alginates and mixtures thereof. Application to laminated decorative coverings.Type: GrantFiled: June 20, 1996Date of Patent: March 23, 1999Assignee: Arjo Wiggins S.A.Inventor: Claude Perrin
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Patent number: 5879408Abstract: Stainproofing properties are imparted to a cellulose fiber by 1) esterifying a part of hydroxyl groups of the cellulose fiber in a heterogeneous reaction system and 2) subjecting the partially esterified cellulose fiber to a stainproofing treatment with an aqueous solution or emulsion of a copolymer having repeating units derived from a fluroalkyl group-containing polymerizable compound and a compound represented by the general formula:CH.sub.2 .dbd.CR.sup.1 COO--(XO).sub.m --(YO).sub.n --R.sup.2( 1)wherein X is --CH(CH.sub.3)--CH.sub.2 -- or --CH.sub.2 --CH(CH.sub.3)--; Y is --CH.sub.2 CH.sub.2 --; R.sup.1 is a hydrogen atom or a methyl group; R.sup.2 is a hydrogen atom or an alkyl group having 1 to 8 carbon atoms; and each of m and n is an integer of 0 to 50, provided that the total of m and n is an integer of 1 to 70.Type: GrantFiled: June 12, 1997Date of Patent: March 9, 1999Assignee: Daikin Industries Ltd.Inventors: Motonobu Kubo, Takashi Enomoto
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Patent number: 5856021Abstract: The toner image receiver sheet of the invention, which is useful for digital offset printing, comprises a resin-coated paper substrate on which is formed an image-receiving layer comprising an imino-functionalized polymer and a gelatin. In a process for making the receiver sheet, a composition, preferably an aqueous solution containing the imino-functionalized polymer and gelatin, is applied to a resin-coated surface of a paper substrate, thereby forming an image-receiving layer on the substrate. The image-receiving layer provides the receiver sheet with a glossy, non-tacky surface having excellent toner transfer and adhesion characteristics.Type: GrantFiled: February 6, 1997Date of Patent: January 5, 1999Assignee: Eastman Kodak CompanyInventor: Gregory E. Missell
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Patent number: 5851592Abstract: Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets. The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets from a transfer belt (71).Type: GrantFiled: October 14, 1997Date of Patent: December 22, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Frederic Pierre Alain Le Riche, Bernard Raymond Pierre
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Patent number: 5849358Abstract: Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets. The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets from a transfer belt (71).Type: GrantFiled: October 14, 1997Date of Patent: December 15, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Frederic Pierre Alain Le Riche, Bernard Raymond Pierre, Mark Steven Vogel
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Patent number: 5849361Abstract: Methine dyes of the formula ##STR1## where K is a carbocyclic or heterocyclic radical,X is nitrogen or a radical of the formula C--Q.sup.1, andQ.sup.1, Q.sup.2 and Q.sup.3 are hydrogen, substituted or unsubstituted C.sub.1 -C.sub.6 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, substituted or unsubstituted phenyl, C.sub.1 -C.sub.6 -alkoxy, benzyloxy, substituted or unsubstituted phenoxy, C.sub.1 -C.sub.6 -alkylthio, halogen, cyano, formylamino or a radical of the formula R.sup.3, --CO--OR.sup.1, --CO--NHR.sup.1, --CO--NH--CO--R.sup.1, --CO--NH--CO--R.sup.3, --CO--NH--SO.sub.2 R.sup.3, --NH--CO--R.sup.1, --NH--CO--OR.sup.1, --NH--CO--NR.sup.1 R.sup.2, NH--CS--OR.sup.1, --NH--CS--NR.sup.1 R.sup.2, --NH--CO--R.sup.3, --NH--SO.sub.2 --R.sup.1, --NH--SO.sub.2 --R.sup.3 or --NH--SO.sub.2 --NR.sup.1 R.sup.2, wherein R.sup.1 and R.sup.2 are substituted or unsubstituted C.sub.1 -C.sub.13 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl or substituted or unsubstituted phenyl, or else --NR.sup.1 R.sup.2 is amino, and R.sup.Type: GrantFiled: June 6, 1997Date of Patent: December 15, 1998Assignee: BASF AktiengesellschaftInventors: Rudiger Sens, Andreas Johann Schmidt, Friedrich-Wilhelm Raulfs, Karl-Heinz Etzbach
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Patent number: 5840416Abstract: A lining material for forming a tight barrier coating on a base material. The lining includes a thermoplastic polymer that does not cross-link in an aqueous dispersion. The thermoplastic polymer is 65%-85% of lining by dry matter weight. The lining also includes an additive including at least one particulate material having barrier-forming properties and in an aqueous dispersion. The additive is 15%-35% of the lining by dry matter weight. At least 95% of the particles of at least one particulate material fulfill the condition that the ratio between the largest and the smallest dimension of a particle of the particulate material is greater than 5:1.Type: GrantFiled: July 14, 1994Date of Patent: November 24, 1998Assignee: Clariant Finance (BVI), Ltd.Inventor: Harri Repo
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Patent number: 5820998Abstract: A process of making a coated paper comprises the following steps: 1) providing a paper layer composed of a blend of pulp fibers and particulate material containing polyvalent metal cations, 2) applying a acidified alginate solution of a material selected from salts and derivatives of alginic acid to cover at least a portion of the paper, 3) reacting the salts and/or derivatives of alginic acid with polyvalent metal cations in the paper to form a polymer coating, and 4) drying the paper and polymer coating. The permeability of the coated paper is generally at least about 75 percent less than the permeability of an identical uncoated portion of the paper. The solution of alginate material may be partially cross-linked. The alginate solution may be deposited utilizing gravure printing techniques. Also disclosed is a coated paper and a wrapper for a smoking article.Type: GrantFiled: March 8, 1994Date of Patent: October 13, 1998Assignee: Schweitzer-Mauduit International, Inc.Inventors: Raymond Dwayne Hotaling, Vladimir Hampl, Jr.
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Patent number: 5800870Abstract: The invention provides an improved method of coating mediumweight and heavyweight papers in a size press by applying a paper coating composition comprising a binder wherein the binder comprises a stable aqueous dispersion comprising a water insoluble component and a water soluble component such that the water insoluble component comprises coalescable polymer particles which have a T.sub.g less than 55.degree. C. and a majority of which have a particle size less than 1 micron; and the water soluble component comprises a water soluble polymer capable of inhibiting coalescence of said polymer particles, or a water soluble polymer and a component capable of inhibiting coalescence of said polymer particles; and wherein said water insoluble component comprises greater that 3% and less than 75% by weight of the binder solids and said water soluble component comprises greater than 25% and less than about 97% of said solids.Type: GrantFiled: March 3, 1997Date of Patent: September 1, 1998Assignee: Penford Products Co.Inventors: Gary Luebke, Edward P. Pauley
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Patent number: 5789031Abstract: A process for manufacturing a coated paper for use in printing is characterized in that the coated paper for printing is produced by coating a color consisting mainly of pigment and a water-soluble binder made of starch or starch derivatives to the surface of a base paper, then drying and finishing it. Steam or an aqueous penetrant solution having a penetrating force of less than 50 seconds is sprayed or applied over the dry coated layer surface of the coated paper, prior to it being finished with a calender, for redistributing the water-soluble binder in the coated layer in order to correct its uneven distribution, which is the cause of printing mottle during the offset printing operation.Type: GrantFiled: December 16, 1996Date of Patent: August 4, 1998Assignee: Oji Paper Co., Ltd.Inventors: Tetsuya Hirabayashi, Hideyuki Suzuki, Terunobu Fukui
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Patent number: 5770256Abstract: An ionically permeable separator for a LeClanche cell, and methods of making and using same, are provided for in the invention. The separator comprises a Kraft paper separator and a corrosion-inhibiting coating thereupon selected to prevent corrosion of a zinc anode of the LeClanche cell. The separator may be configured for use in round or flat LeClanche cells. The separators of the invention may be used in heavy duty batteries containing an electrolyte comprising zinc chloride as a primary component. Cells made in accordance with the invention exhibit comparable or improved capacity and other performance characteristics in respect of conventional cells.Type: GrantFiled: May 13, 1996Date of Patent: June 23, 1998Assignee: Rayovac CorporationInventors: Ronald J. Ekern, Janna L. Rose, Miguel E. Armacanqui
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Patent number: 5728432Abstract: The present invention provides:an aqueous surface-treating agent used for surface treatment of reinforcing material, which includes a carbodiimide compound as a main component, a reinforcing material surface-treated with the above aqueous surface-treating agent, and a composite material comprising a matrix and the above reinforcing material. The aqueous surface-treating agent has good storage stability, gives no bad effect on human health owing to no use of organic solvent and, when used for the surface treatment of a reinforcing material, can provide a surface-treated reinforcing material which can produce a composite material comprising a matrix, the surface-treated reinforcing material having high adhesivity between the two components.Type: GrantFiled: June 21, 1996Date of Patent: March 17, 1998Assignee: Nisshinbo Industries, Inc.Inventors: Yasuo Imashiro, Ikuo Takahashi, Naofumi Horie
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Patent number: 5714082Abstract: This invention provides compositions suitable for treating fibrous substrates to render them durably resistant to dry soil and durably repellent to water and oil. One composition is an aqueous emulsion comprising: a dry soil resistant and water and oil repellent fluorochemical treatment and an effective amount of one or more fluorochemical surfactants wherein the surfactants comprising one or two fluorochemical groups and one or two water-solubilizing polar groups. Another composition is an aqueous emulsion comprising: a dry soil resistant and water and oil repellent fluorochemical treatment; an effective amount of one or more fluorochemical surfactants wherein the surfactants comprising one or two fluorochemical groups and one or two water-solubilizing polar groups; and one or more non-fluorinated additives.Type: GrantFiled: June 2, 1995Date of Patent: February 3, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gail S. Boardman, Steven J. Martin, Aaron D. Otteson, Jeffrey G. Linert, Pamela A. Wolf, Roger R. Alm
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Patent number: 5711992Abstract: The substitution of a water-based phenolic thermosetting resin for a phenolic thermosetting resin in an organic solvent provides a safer and environmentally improved method for making honeycomb core. Improved processing characteristics in components manufactured from such honeycomb core are observed.Type: GrantFiled: December 18, 1995Date of Patent: January 27, 1998Assignee: Hexcel CorporationInventors: Richard R. Heitkamp, Thomas H. Iler, Dale Danver, Liqun Cao, Ronald Boyer
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Patent number: 5709776Abstract: A process is disclosed for strengthening and sizing paper which comprises the step of applying a composition comprising (a) an isocyanate and (b) an isocyanate-reactive component comprising at least one polyol having an ethylene oxide content of at least 1%, wherein said composition does not contain water to the paper by means of an electrostatic spraying device having a linear orifice.Type: GrantFiled: November 25, 1996Date of Patent: January 20, 1998Assignee: Imperial Chemical Industries PLCInventors: Paul David Coleman, John Russell Robertson
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Patent number: 5700516Abstract: Hot melt wax compositions are described that render fibrous products such as paper, paperboard and corrugated paper containers water-resistant at room temperature, but enable such articles to be repulped and recycled when the coated articles are repulped in a heated nearly neutral to alkaline aqueous medium. The compositions comprise from about 20% to 97.5% by weight of a water-repellent wax that is a solid at 20.degree. C.; from about 2.Type: GrantFiled: October 18, 1996Date of Patent: December 23, 1997Assignee: S. C. Johnson Commerical Markets, Inc.Inventors: Paul E. Sandvick, Calvin J. Verbrugge
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Patent number: 5698018Abstract: A method of transferring a pigmented image, comprising the steps of:providing a donor element bearing an inkjet printed image containing one or more heat transferable pigments selected from the group consisting ofA. 2-(N-methylcarbamyl)-4-(4-N,N-di-ethylamino-phenylimino)-1,4-naphthoquinon e;B. 2-(N-methylcarbamyl)-4-(4-N,N-di-ethylamino-2-methylphenylimino)-1,4-napht hoquinone;C. 1-phenyl-3-N,N-dimethylamino-4-(4-N,N-diethylaminobenzylidene)-pyrazoline- 5-one;D. N-ethyl-N-benzyl-3-acetamido-4-(3-methyl-4-cyanoisothiazol-5-ylazo)-anilin e;E. N-(2-((2,6-dicyano-4-methylphenyl)azo)-5-(diethylamino)phenyl}methanesulfo namide;F. N-(2-((2,6-dicyano-4-methylphenyl)azo)-5-(dipropylamino)phenyl}methanesulf onamide; andcontacting the donor element with an image receiving element; andtransferring the heat transferable image to the image receiving element by applying heat to the donor element.Type: GrantFiled: January 29, 1997Date of Patent: December 16, 1997Assignee: Eastman Kodak CompanyInventors: John F. Bishop, Michael J. Simons, Mary C. Brick
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Patent number: H1967Abstract: A method of improving the adhesion of an ink jet ink formulation to a substrate, which method includes adding to the ink jet ink formulation an amount of a chelate of a transition metal or a chelate of a mixture of transition metals effective to improve the adhesion of the ink jet ink formulation to the substrate; printing the substrate with the chelate-containing ink jet ink formulation; and treating the printed substrate with heat for a time and at a temperature to further improve the adhesion of the ink jet ink formulation to the substrate. The ink jet ink formulation typically will include a diluent system and colorant. The chelate typically will be present in the ink jet ink formulation in a range of about 0.001 up to about 20 percent by weight, based on the total weight of the chelate-containing ink jet ink formulation. A particularly desirable chelate is zirconium lactate. The present invention also provides an article and a substrate produced by the foregoing method.Type: GrantFiled: July 2, 1998Date of Patent: June 5, 2001Assignee: Kimberly-Clark Worldwide, Inc.Inventor: Jerome A. Woolf