Protein Patents (Class 162/174)
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Patent number: 7241508Abstract: An improved pigment-coated paper is provided which enables the use of a non-acidic basesheet in the manufacture of a fragrance release paper. The non-acidic basesheet, compared to the conventionally used acidic basesheet, is brighter and less brittle, and therefore imparts improved visual effects and reduces the likelihood of cracking. The clay-based coating composition is mildly alkaline when wet (pH between 7.5 and 8.5) and upon drying on the basesheet, becomes mildly acidic (pH between 6.0 and 7.0). A method of making the improved pigment-coated paper using a non-acidic basesheet in the manufacture of a fragrance release paper is provided, comprising the steps of preparing the basesheet, applying the premixed pigment coating composition using rollers and blade leveling devices, and drying the pigment coating composition. A fragrance sample construction, for use in magazines, catalogs, leaflets, etc.Type: GrantFiled: October 12, 2005Date of Patent: July 10, 2007Assignee: West Linn Paper CompanyInventors: Christopher James Corrigan, David Randolph Goss
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Patent number: 7217316Abstract: The present invention relates to an aqueous coating composition which comprises an alkali oxidised aqueous gelatinised starch/protein mixture, said composition having a viscosity between 1 and 100 centapoise (cps), and a pH from pH 7.5 to pH 9, particularly compositions wherein said alkali oxidised aqueous gelatinised starch/protein mixture comprises a solids content of from 3% w/w to 50% w/w, and processes in the preparation of the same and also processes employing the said composition in the preparation of paper or fiberboard.Type: GrantFiled: March 19, 2004Date of Patent: May 15, 2007Assignee: George Weston Foods LimitedInventors: Raymond Bede Neale, Catherine Gail Fryirs
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Publication number: 20040261659Abstract: The present invention relates to an aqueous coating composition which comprises an alkali oxidised aqueous gelatinised starch/protein mixture, said composition having a viscosity between 1 and 100 centapoise (cps), and a pH from pH 7.5 to pH 9, particularly compositions wherein said alkali oxidised aqueous gelatinised starch/protein mixture comprises a solids content of from 3% w/w to 50% w/w, and processes in the preparation of the same and also processes employing the said composition in the preparation of paper or fibreboard.Type: ApplicationFiled: March 19, 2004Publication date: December 30, 2004Applicant: GEORGE WESTON FOODS LIMITEDInventors: Raymond Bede Neale, Catherine Gail Fryirs
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Patent number: 6790270Abstract: A paper sizing and coating composition suitable for use in food packaging that is effective over a range of atmospheric conditions. The composition includes a starch and a water-soluble protein having a bloom strength of at least about 150. The composition can be applied over a paper substrate to improved oil and grease resistance.Type: GrantFiled: March 21, 2003Date of Patent: September 14, 2004Assignee: National Starch and Chemical Investment Holding CorporationInventors: Robert L. Billmers, Viotor L. Mackewicz, Ralph M. Trksak
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Patent number: 6770129Abstract: Aqueous paper coating compositions containing at least one of a clay, a starch, casein, a resin, and a wax; and wherein the composition contains from about 0.Type: GrantFiled: January 28, 2003Date of Patent: August 3, 2004Assignee: Cognis CorporationInventors: David W. Brown, Kenneth Breindel, Ronald W. Broadbent, Michael S. Wiggins
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Patent number: 6719882Abstract: Cellulosic fiber composites and methods for preparing cellulosic fiber composites are provided. The cellulosic fiber composites comprise cellulosic material and a resin binder. The resin binder comprises protein hydrolysates and a synthetic resin. The synthetic resin can be phenolic resin, isocyanate resin, or combinations thereof. The protein hydrolysates provide a composite with a reduced amount of petrochemicals. The composite contains an amount of resin binder sufficient to bind the cellulosic material. The composite can also contain a silicone, silane, or combination thereof. The method employs a low moisture-content mat that does not require drying prior to pressing. Additional methods can be employed to produce finished cellulosic fiber composite articles.Type: GrantFiled: February 8, 2001Date of Patent: April 13, 2004Assignee: Battelle Memorial InstituteInventors: Bhima Rao Vijayendran, Jan Moon
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Patent number: 6719862Abstract: A highly densifiable wood pulp product is disclosed. In one embodiment, the densifiable product includes fibers having low coarseness, preferably having a fiber coarseness less than about 22 mg/100 m, and a densifying agent. In another embodiment, the densifiable product further includes fibers having coarseness greater than about 22 mg/100 m. Juvenile wood fibers are the preferred source of fibers having low coarseness. A densified pulp product formed by compacting a fibrous composite that includes fibers having a fiber coarseness less than about 22 mg/100 m, a densifying agent, and optionally, fibers having coarseness greater than about 22 mg/100 m is also disclosed. The pulp products can be advantageously incorporated into absorbent articles and can optionally further include superabsorbent material. Methods for forming the densifiable and densified fibrous products are also disclosed.Type: GrantFiled: May 30, 2003Date of Patent: April 13, 2004Assignee: Weyerhaeuser CompanyInventors: Robert H. Quick, Daniel M. Shellhammer, Michael R. Hansen, Richard H. Young, Sr.
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Publication number: 20040058420Abstract: Pulp is treated with a hemicellulase, e.g. a xylanase such as that derived from Bacillus sp. SD902, prior to being chemically modified. This results in excellent cellulose derivatives that could not be obtained by any conventional methods. Specifically, the cellulose derivatives produced by this method have improved filterability and increased water-solubility. In addition, according to this method, the formation of microgel is minimized, and the distribution of the substituents in the cellulose derivatives through the intramolecular substitution in the method is made more uniform.Type: ApplicationFiled: September 19, 2003Publication date: March 25, 2004Applicant: Novozymes A/SInventors: Yoshitaka Noguchi, Motoaki Kamachi
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Publication number: 20040033580Abstract: The present invention provides thermophilic alkaliphilic bacteria and thermostable alkaline polypeptides obtainable therefrom. It also provides a method for producing polypeptides according to the invention, nucleic acids encoding such polypeptides and compositions comprising such polypeptides. It also relates to the use of enzymes obtainable from these novel organisms in the detergent industry, the paper and pulp industry and the textile industry.Type: ApplicationFiled: June 18, 2002Publication date: February 19, 2004Inventors: Brain E. Jones, Margareta A. Herweijer, Michael J. Danson, David W. Hough, Carl R. Thompson
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Patent number: 6638884Abstract: A highly densifiable wood pulp product is disclosed. In one embodiment, the densifiable product includes fibers having low coarseness, preferably having a fiber coarseness less than about 22 mg/100 m, and a densifying agent. In another embodiment, the densifiable product further includes fibers having coarseness greater than about 22 mg/100 m. Juvenile wood fibers are the preferred source of fibers having low coarseness. A densified pulp product formed by compacting a fibrous composite that includes fibers having a fiber coarseness less than about 22 mg/100 m, a densifying agent, and optionally, fibers having coarseness greater than about 22 mg/100 m is also disclosed. The pulp products can be advantageously incorporated into absorbent articles and can optionally further include superabsorbent material. Methods for forming the densifiable and densified fibrous products are also disclosed.Type: GrantFiled: April 17, 2001Date of Patent: October 28, 2003Assignee: Weyerhaeuser CompanyInventors: Robert H. Quick, Daniel M. Shellhammer, Michael R. Hansen, Richard H. Young, Sr.
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Patent number: 6582559Abstract: The invention concerns the use of a water-soluble or water-dispersible polymer having a molecular weight of at least 800, containing at least 5 aldehyde groups per molecule and at least 1 carboxyl group per molecule, the ratio of aldehyde groups to carboxyl groups being higher than 0.75:1, as a wet strength additive. The invention also discloses novel cationic derivatives thereof.Type: GrantFiled: May 4, 2001Date of Patent: June 24, 2003Assignee: SCA Hygiene Products Zeist B.V.Inventors: Jeffrey Wilson Thornton, Dorine Lisa Van Brussel-Verraest, Arie Besemer, Sussan Sandberg
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Publication number: 20030051842Abstract: There is provided a photocatalytic pulp composition having the antibacterial, bad smell degrading and harmful substance oxidatively degrading effects in various wide uses such as a filter material, a packaging material, a building material. A photocatalytic pulp composition is effectively used in the air treatment, the water treatment and the soil treatment and improves the photocatalytic activity effect itself.Type: ApplicationFiled: May 17, 2002Publication date: March 20, 2003Inventor: Sadao Nishibori
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Patent number: 6527915Abstract: Methods for inhibiting the depositions of organic contaminants from pulp in pulp and papermaking systems are disclosed. Whey proteins are added to the pulp or applied to deposition prone surfaces of a papermaking system.Type: GrantFiled: March 22, 2001Date of Patent: March 4, 2003Assignee: Hercules IncorporatedInventor: Qu-Ming Gu
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Publication number: 20020185239Abstract: A size composition for the surface sizing of paper, board or other suchlike. The size composition comprises a size fraction which comprises a water-soluble, principal component made up of, for example, starch, polyvinyl alcohol, carboxymethyl cellulose, glucomannan, protein, or mixtures thereof, and a pigment fraction formed by mixing together a mineral material, which in the main comprises talc particles and/or other phyllosilicate particles, and a binder such as a synthetic polymer, latex and/or other corresponding binder. The size composition is prepared by mixing together the said size fraction and pigment fraction.Type: ApplicationFiled: January 8, 2002Publication date: December 12, 2002Inventors: Tomi Kimpimaki, Mari Niinikoski, Kari Nurmi
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Proteins and polymers for use as pitch and stickies control agents in pulp and papermaking processes
Patent number: 6461477Abstract: Methods for inhibiting the depositions of organic contaminants from pulp in pulp and papermaking systems are disclosed. A combination of a protein and a cationic polymer is added to the pulp or applied to deposition prone surfaces of a papermaking system.Type: GrantFiled: March 22, 2001Date of Patent: October 8, 2002Assignee: Hercules IncorporatedInventors: Duy T. Nguyen, Qu-Ming Gu -
Proteins and polymers for use as pitch and stickies control agents in pulp and papermaking processes
Publication number: 20020096293Abstract: Methods for inhibiting the depositions of organic contaminants from pulp in pulp and papermaking systems are disclosed. A combination of a protein and a cationic polymer is added to the pulp or applied to deposition prone surfaces of a papermaking system.Type: ApplicationFiled: March 22, 2001Publication date: July 25, 2002Inventors: Duy T. Nguyen, Qu-Ming Gu -
Patent number: 6296696Abstract: A one-pass, non-tolerance dependent method for preparing paper size emulsions comprising an aqueous emulsion of a substituted cyclic dicarboxylic anhydride, a colloidal stabilizer, and a surfactant wherein the emulsion after one-pass through a dispersion system has an average particle size of less than 2 microns.Type: GrantFiled: December 15, 1998Date of Patent: October 2, 2001Assignee: National Starch & Chemical Investment Holding CorporationInventors: Michel D. Létourneau, Walter Maliczyszyn
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Patent number: 6231721Abstract: A highly densifiable wood pulp product is disclosed. In one embodiment, the densifiable product includes fibers having low coarseness, preferably having a fiber coarseness less than about 22 mg/100 m, and a densifying agent. In another embodiment, the densifiable product further includes fibers having coarseness greater than about 22 mg/100 m. Juvenile wood fibers are the preferred source of fibers having low coarseness. A densified pulp product formed by compacting a fibrous composite that includes fibers having a fiber coarseness less than about 22 mg/100 m, a densifying agent, and optionally, fibers having coarseness greater than about 22 mg/100 m is also disclosed. The pulp products can be advantageously incorporated into absorbent articles and can optionally further include superabsorbent material. Methods for forming the densifiable and densified fibrous products are also disclosed.Type: GrantFiled: October 9, 1998Date of Patent: May 15, 2001Assignee: Weyerhaeuser CompanyInventors: Robert H. Quick, Daniel M. Shellhammer, Michael R. Hansen, Richard H. Young, Sr.
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Patent number: 6022450Abstract: Paper and cardboard containing starch and protein fractions of flour having improved strength, stiffness and surface properties, wherein the starch and protein fractions are subjected to a degradation with ammonium persulfate, amylase, an acid, protease or a combination thereof before being introduced to the paper or cardboard. After the starch and protein fractions have been degraded, they can be added to the paper fiber matrix or used as a sizing or glue.Type: GrantFiled: May 7, 1998Date of Patent: February 8, 2000Assignee: Roermond Papier B.V.Inventors: Louis Peter Marie Van Kessel, Gerardus Henricus Andreas Kuypers, Matheus Petrus Marie Maessen
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Patent number: 5952394Abstract: Composition and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking system a composition comprising a polyvinyl alcohol having 50 to 100% hydrolysis, a high molecular weight gelatin having a molecular weight of about 100,000 or higher, and a cationic polymer.Type: GrantFiled: September 16, 1997Date of Patent: September 14, 1999Assignee: BetzDearborn Inc.Inventor: Duy T. Nguyen
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Patent number: 5885419Abstract: Methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. Albumins, globulins or blends thereof and spray-dried animal blood cells are added to the pulp or sprayed onto deposition prone surfaces of a papermaking system suffering from organic contaminants.Type: GrantFiled: December 9, 1997Date of Patent: March 23, 1999Assignee: BetzDearborn Inc.Inventors: Duy T. Nguyen, Tien-Feng Ling
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Patent number: 5849153Abstract: A water-dispersible sheet and a cigarette using the sheet are disclosed. The sheet comprises a water-resolvable base paper made from fibrous raw materials and a water-dispersible coating layer containing water-soluble polymer and an alkaline compound. The sheet is also produced through an impregnation treatment for a water-resolvable base paper with a coating mixture containing water-soluble polymer and an alkaline compound, wherein said water-resolvable base paper is made from a mixture of water-dispersible fibers and fibrous carboxymethyl cellulose acid or fibrous carboxyethyl cellulose acid. The gas-permeability of the water-dispersible sheet is controlled by the water-dispersible coating layer or the impregnation treatment.Type: GrantFiled: July 30, 1996Date of Patent: December 15, 1998Assignees: Mishima Paper Co., Ltd., Japan Tobaco Inc.Inventors: Yoshiaki Ishino, Masato Shishikura, Toru Tsujimoto, Susumu Minamisawa
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Patent number: 5849155Abstract: The invention describes a method for dispersion of cellulose based fibers in water. The raw material, which particularly may be recycled paper, is first wetted with water. By a combination of addition of hydrocolloid which binds water, and strong kneading at high solid content, the mixture is transformed into a modulable paste. The high viscosity of the paste effectively conveys the shear forces of the kneading machine to make the fibers flexible and tear them apart. When the kneading is terminated, the hydrocolloid prevents the fibers from reassociation into fiber bundles.Type: GrantFiled: November 6, 1995Date of Patent: December 15, 1998Assignee: E. Khashoggi Industries, LLCInventor: Stein Gasland
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Patent number: 5810970Abstract: A method for making a collagen strengthened cellulosic sheet by providing a cellulosic pulp slurry; adding solubilized collagen to the pulp slurry, and mixing for a time effective for interaction of the cellulosic pulp slurry and solubilized collagen; forming the interacted cellulosic pulp slurry and solubilized collagen into a sheet; and drying the sheet; also, a method for using solubilized collagen for strengthening paper by mixing the solubilized collagen with a cellulosic pulp slurry; and making a cellulosic pulp product from the mixture and drying.Type: GrantFiled: June 7, 1995Date of Patent: September 22, 1998Assignee: Ranpak CorporationInventors: Kenneth E. Hughes, David C. Masterson, David J. Fink, Barbara A. Metz, Gordon E. Pickett, Paul M. Gemmer
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Patent number: 5779858Abstract: Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking system a composition comprising a polyvinyl alcohol having 50 to 100% hydrolysis and a high molecular weight gelatin having a molecular weight of about 100,000 or higher.Type: GrantFiled: May 22, 1996Date of Patent: July 14, 1998Assignee: BetzDearborn Inc.Inventor: Duy T. Nguyen
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Patent number: 5746888Abstract: Methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. Albumins, globulins or blends thereof and spray-dried animal blood cells are added to the pulp or sprayed onto deposition prone surfaces of a papermaking system suffering from organic contaminants.Type: GrantFiled: July 9, 1996Date of Patent: May 5, 1998Assignee: BetzDearborn Inc.Inventors: Duy T. Nguyen, Tien-Feng Ling
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Patent number: 5744002Abstract: A method for making a collagen strengthened cellulosic sheet by providing a cellulosic pulp slurry; adding solubilized collagen to the pulp slurry, and mixing for a time effective for interaction of the cellulosic pulp slurry and solubilized collagen; forming the interacted cellulosic pulp slurry and solubilized collagen into a sheet; and drying the sheet; also, a method for using solubilized collagen for strengthening paper by mixing the solubilized collagen with a cellulosic pulp slurry; and making a cellulosic pulp product from the mixture and drying.Type: GrantFiled: June 7, 1995Date of Patent: April 28, 1998Assignee: Ranpak Corp.Inventors: Kenneth E. Hughes, David C. Masterson, David J. Fink, Barbara A. Metz, Gordon E. Pickett, Paul M. Gemmer, Richard S. Brody
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Patent number: 5736010Abstract: A method for making a collagen strengthened cellulosic sheet by providing a cellulosic pulp slurry; adding solubilized collagen to the pulp slurry, and mixing for a time effective for interaction of the cellulosic pulp slurry and solubilized collagen; forming the interacted cellulosic pulp slurry and solubilized collagen into a sheet; and drying the sheet; also, a method for using solubilized collagen for strengthening paper by mixing the solubilized collagen with a cellulosic pulp slurry; and making a cellulosic pulp product from the mixture and drying.Type: GrantFiled: June 7, 1995Date of Patent: April 7, 1998Assignee: Ranpak CorporationInventors: Kenneth E. Hughes, David C. Masterson, David J. Fink, Barbara A. Metz, Gordon E. Pickett, Paul M. Gemmer, Richard S. Brody
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Patent number: 5723021Abstract: Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking system a composition comprising a polyvinyl alcohol having 50 to 100% hydrolysis, a high molecular weight gelatin having a molecular weight of about 100,000 or higher, and a cationic polymer.Type: GrantFiled: August 21, 1996Date of Patent: March 3, 1998Assignee: BetzDearborn Inc.Inventor: Duy T. Nguyen
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Patent number: 5714042Abstract: A method for making a collagen strengthened cellulosic sheet by providing a cellulosic pulp slurry; adding solubilized collagen to the pulp slurry, and mixing for a time effective for interaction of the cellulosic pulp slurry and solubilized collagen; forming the interacted cellulosic pulp slurry and solubilized collagen into a sheet; and drying the sheet; also, a method for using solubilized collagen for strengthening paper by mixing the solubilized collagen with a cellulosic pulp slurry; and making a cellulosic pulp product from the mixture and drying.Type: GrantFiled: June 7, 1995Date of Patent: February 3, 1998Assignee: Ranpak CorporationInventors: Kenneth E. Hughes, David C. Masterson, David J. Fink, Barbara A. Metz, Gordon E. Pickett, Paul M. Gemmer, Richard S. Brody
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Patent number: 5711945Abstract: The bacteria Pseudomonas fluorescens and Xanthomonas campestris are useful in reducing the pitch content of pulps and pulpwoods used in making cellulosic products. Such bacteria are also useful in reducing the color staining by staining fungi of structural wood by inoculating the structural wood or log sources from which it is to be cut.Type: GrantFiled: May 11, 1995Date of Patent: January 27, 1998Assignee: Regents of the University of MinnesotaInventors: Robert A. Blanchette, Todd A. Burnes, Roberta L. Farrell
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Patent number: 5711853Abstract: A method for making a collagen strengthened cellulosic sheet by providing a cellulosic pulp slurry; adding solubilized collagen to the pulp slurry, and mixing for a time effective for interaction of the cellulosic pulp slurry and solubilized collagen; forming the interacted cellulosic pulp slurry and solubilized collagen into a sheet; and drying the sheet; also, a method for using solubilized collagen for strengthening paper by mixing the solubilized collagen with a cellulosic pulp slurry; and making a cellulosic pulp product from the mixture and drying.Type: GrantFiled: June 7, 1995Date of Patent: January 27, 1998Assignee: Ranpak Corp.Inventors: Kevin M. Virnelson, Kenneth E. Hughes, David C. Masterson, David J. Fink, Barbara A. Metz, Gordon E. Pickett, Paul M. Gemmer, Richard S. Brody
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Patent number: 5707491Abstract: A method for making a collagen strengthened cellulosic sheet by providing a cellulosic pulp slurry; adding solubilized collagen to the pulp slurry, and mixing for a time effective for interaction of the cellulosic pulp slurry and solubilized collagen; forming the interacted cellulosic pulp slurry and solubilized collagen into a sheet; and drying the sheet; also, a method for using solubilized collagen for strengthening paper by mixing the solubilized collagen with a cellulosic pulp slurry; and making a cellulosic pulp product from the mixture and drying.Type: GrantFiled: June 7, 1995Date of Patent: January 13, 1998Assignee: Ranpak CorporationInventors: Kenneth E. Hughes, David C. Masterson, David J. Fink, Barbara A. Metz, Gordon E. Pickett, Paul M. Gemmer, Richard S. Brody
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Patent number: 5700354Abstract: A method for making a collagen strengthened cellulosic sheet by providing a cellulosic pulp slurry; adding solubilized collagen to the pulp slurry, and mixing for a time effective for interaction of the cellulosic pulp slurry and solubilized collagen; forming the interacted cellulosic pulp slurry and solubilized collagen into a sheet; and drying the sheet; also, a method for using solubilized collagen for strengthening paper by mixing the solubilized collagen with a cellulosic pulp slurry; and making a cellulosic pulp product from the mixture and drying.Type: GrantFiled: June 7, 1995Date of Patent: December 23, 1997Assignee: Ranpak Corp.Inventors: Kevin M. Virnelson, Kenneth E. Hughes, David C. Masterson, David J. Fink, Barbara A. Metz, Gordon E. Pickett, Paul M. Gemmer, Richard S. Brody
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Patent number: 5700353Abstract: A method for making a collagen strengthened cellulosic sheet by providing a cellulosic pulp slurry; adding solubilized collagen to the pulp slurry, and mixing for a time effective for interaction of the cellulosic pulp slurry and solubilized collagen; forming the interacted cellulosic pulp slurry and solubilized collagen into a sheet; and drying the sheet; also, a method for using solubilized collagen for strengthening paper by mixing the solubilized collagen with a cellulosic pulp slurry; and making a cellulosic pulp product from the mixture and drying.Type: GrantFiled: June 7, 1995Date of Patent: December 23, 1997Assignee: Ranpak CorporationInventors: Kenneth E. Hughes, David C. Masterson, David J. Fink, Barbara A. Metz, Gordon E. Pickett, Paul M. Gemmer, Richard S. Brody
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Patent number: 5686262Abstract: The invention includes a method that provides a low cost aqueous solution of solubilized collagen by the steps of: (a) providing an aqueous ground slurry of insoluble collagen and adjusting the pH of said slurry to obtain activity for a proteolytic enzyme added in Step b; (b) adding said proteolytic enzyme to said pH adjusted slurry; (c) reacting the slurry and enzyme of Step b and/or recycled insoluble collagen and enzyme from Step e at a temperature, T, and for a time, t, effective for forming a solution increased in solubilized collagen; (d) adding additional water and insoluble collagen to said solution of Step c and mixing; (e) separating at least some of the solution of Step d containing solubilized collagen from insoluble collagen, whereby at least a portion of said insoluble collagen and proteolytic enzyme is recycled to Step c, and the separated solution containing solubilized collagen is withdrawn as product; an alternative embodiment provides for the direct production of solubilized collagen withouType: GrantFiled: June 7, 1995Date of Patent: November 11, 1997Assignee: Ranpak CorporationInventors: David J. Fink, Richard S. Brody
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Patent number: 5647957Abstract: A method for making a collagen strengthened cellulosic sheet by providing a cellulosic pulp slurry; adding solubilized collagen to the pulp slurry, and mixing for a time effective for interaction of the cellulosic pulp slurry and solubilized collagen; forming the interacted cellulosic pulp slurry and solubilized collagen into a sheet; and drying the sheet; also, a method for using solubilized collagen for strengthening paper by mixing the solubilized collagen with a cellulosic pulp slurry; and making a cellulosic pulp product from the mixture and drying.Type: GrantFiled: June 7, 1995Date of Patent: July 15, 1997Assignee: Ranpak CorporationInventors: Kenneth E. Hughes, David C. Masterson, David J. Fink, Barbara A. Metz, Gordon E. Pickett, Paul M. Gemmer, Richard S. Brody
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Patent number: 5582682Abstract: The specification discloses an unorthodox system for manufacturing strong, light-weight and weather-resistant cellulosic composite materials from discarded paper and newsprint, and papermill sludge--and from an unlimited variety of particulated fibrous lignocellulosics--without the use of an extrinsic adhesive. Both the matrix-forming resin and the fiber-substrate, which comprise the entire composite, are spontaneously created in situ at ambient conditions by the ammoniation of a mixture of a protein-containing material and a particulated cellulosic. Heating an article shaped from such a mixture to above 175.degree. C. polymerizes the resin and bonds the fiber-substrate into a cellulosic composite product. Also disclosed is a process for manufacturing reinforced and laminated composites as well as a composition which simplifies the production of both cellulosic composites and all-biomass thermosetting resins.Type: GrantFiled: May 31, 1994Date of Patent: December 10, 1996Inventor: Arthur Ferretti
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Patent number: 5536363Abstract: Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking system a composition comprising a polyvinyl alcohol having 50 to 100% hydrolysis and a high molecular weight gelatin having a molecular weight of about 100,000 or higher.Type: GrantFiled: April 12, 1995Date of Patent: July 16, 1996Assignee: Betz PaperChem, Inc.Inventor: Duy T. Nguyen
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Patent number: 5494509Abstract: A paper coating composition is provided having a clay-containing pigment system, a binder, a polysaccharide thickener, and at least 0.005% to 2%, based upon the weight of the polymer, of a blocking agent that serves to prevent more than 25% of the polysaccharide thickener from being adsorbed onto the clay pigment surface. This coating is applied to raw paper for producing a high quality paper with smooth and substantially free of indentations surfaces for good ink to paper transfer.Type: GrantFiled: October 29, 1993Date of Patent: February 27, 1996Assignee: Aqualon CompanyInventors: Dirk Kruythoff, Andre H. Van Waveren
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Patent number: 5308663Abstract: A biodegradable nonwoven fabric and molded vessel suitable to throwaway use such as in domestic, wrapping, agricultural, gardening, and civil engineering field. A web of cellulose-based fibers are combined with chitosan salt and an interfiber binder comprising a combination of chitosan salt and fine cellulose, or by combined use of the interfiber binder and physical combining techniques. They are naturally decomposed by microorganisms in the soil and can dissolve the polution problems.Type: GrantFiled: October 23, 1991Date of Patent: May 3, 1994Assignees: Kanai Juyo Kogyo Company Limited, Director, General of Agency of Industrial Science and TechnologyInventors: Mutuo Nakagawa, Yasuo Nakagawa, Masaaki Nishida, Jun Hosokawa, Masashi Nishiyama, Takamasa Kubo, Kazutoshi Yoshihara
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Patent number: 5201944Abstract: The present invention relates to a size composition which shows an excellent sizing effect in neutral to weakly acidic papermaking.Alkanol tertiary amine and fortified rosin, incorporated in the size composition of the present invention, even when prepared as dispersions using a dispersant, are extremely poor in sizing performance in the neutral pH range, whereas the size composition obtained by mixing these components in a ratio according to the present invention and dispersing them using a surfactant specified by the present invention offers an excellent sizing in the neutral to weakly acidic pH range.Type: GrantFiled: May 30, 1991Date of Patent: April 13, 1993Assignee: Harima Chemicals, Inc.Inventors: Tomohiko Nakata, Hirofumi Aoki, Shoichi Yano, Yoshihide Ishikawa, Masao Hamada
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Patent number: 5176796Abstract: The method for avoiding pitch troubles includes the treatment with an acylglycerol lipase. The method of the present invention overcomes the pitch troubles in a process for the production of mechanical pulp and/or mechanical pulp-containing paper.Type: GrantFiled: April 15, 1991Date of Patent: January 5, 1993Assignee: Jujo Paper Co., Ltd.Inventors: Yuko Irie, Motoo Matsukura, Kunio Hata
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Patent number: 5141599Abstract: A receiving material for ink-jet printing includes a polyolefin coated base paper and an ink receiving layer applied on the front face thereof, and the receiving layer contains a mixture of gelatin and starch.Type: GrantFiled: March 5, 1991Date of Patent: August 25, 1992Assignee: Felix Schoeller, Jr. GmbH & Co. KGInventors: Reiner Jahn, Horst Westfel
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Patent number: 5062922Abstract: A method for making papers which comprises: using a paper sizing agent comprising as an effective component an .alpha.-hydroxycarboxylic acid having the formula (I): ##STR1## wherein R.sup.1 is an alkyl group having 8 to 30 carbon atoms, an alkenyl group having 8 to 30 carbon atoms, ##STR2## and R.sup.2 is hydrogen atom, or an alkyl or alkenyl group having 1 to 30 carbon atoms, or a salt thereof. The paper sizing agent used in the method can exhibit the excellent sizing effect in paper making under the condition of the wide pH-range from pH 3 to pH 9, and has an excellent storage stability. Further the method is excellent in workability and high in industrial value.Type: GrantFiled: September 22, 1989Date of Patent: November 5, 1991Assignee: Arakawa Kagaku Kogyo Kabushiki KaishaInventors: Masato Nakajima, Kenji Yokotani, Atsushi Ikeda
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Patent number: 5026457Abstract: The present invention provides a process for sizing in the production of paper, cardboard, paperboard and other cellulose-containing materials with and without filling materials and/or pigments by natural or synthetic sizing agents under neutral to weakly basic pH conditions without the use of aluminum salts, wherein sizing is carried out with a combination of natural or synthetic sizing agents with a cationic dicyandiamide resin.Type: GrantFiled: February 28, 1989Date of Patent: June 25, 1991Assignee: SKW Trostberg AktiengesellschaftInventors: Rudolf Eichinger, Horst Michaud, Josef Seeholzer
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Patent number: 4983257Abstract: An invert size for the engine and tub sizing of paper. It contains an aqueous dispersion of a fortified, unfortified, hydrogenated, or disproportionated and optionally esterified rosin or mixture of such rosins and of a dispersant that contains digested casein or an emulsifier of the general formula[R--(OCH.sub.2 CH.sub.2).sub.n --O--A].sub.x.sup.- M.sup.X+(I)wherein R is an alkylphenyl, alkyl, or alkenyl group or a cycloalkyl group with condensed rings, A is a group with the formula --CH.sub.2 COO or --SO.sub.3, M.sup.x+ is a cation, x is 1 or 2, and n is a number such that approximately 21 to 76% of the molecular weight of the anion is in the --OCH.sub.2 CH.sub.2 group. To allow sizing control, the dispersant also contains cationic starch.Type: GrantFiled: January 9, 1989Date of Patent: January 8, 1991Assignee: Klebstofwerke Collodin Dr. Schultz & Nauth GMBHInventors: Wolf-Stefan Schultz, Uwe Beyer
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Patent number: 4980023Abstract: The invention relates to a method for manufacturing a paper or cardboard product and to a product manufactured by the method. According to the invention, a cellulase enzyme is added to the product during manufacturing, said enzyme causing the product to decompose when exposed to moisture. The enzyme can be introduced into the product in connection with surface sizing, pigment coating or calendering, or it can be added in the form of a solution which is separately applied to the product in the dry end region of the paper or cardboard machine. Experiments have shown that a product manufactured as taught by the invention can be provided with a plastic coating without risk of destroying the enzyme. Cardboard produced by the method of the invention can be used in the manufacture of packages for liquids, of packing boxes or disposable containers, the cellulase enzyme serving to promote decomposition of the products after they have been brought as waste to dumping areas.Type: GrantFiled: December 5, 1988Date of Patent: December 25, 1990Assignee: Enso-Gutzeit OyInventor: Mirja Salkinoja-Salonen
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Patent number: 4943349Abstract: Process for using papermaking techniques for preparing a sheet material with improved on-machine retention, sheet material thus obtained and its application, notably in the field of printing and writing, packaging and coverings.The invention relates to a process for using papermaking techniques to make a sheet material.This material copmrises, in addition to the fibres, an organic binder, a non-binding mineral filler and a flocculant, as well as various conventional additives, this process being characterized by the fact that the mineral filler and the binder are flocculated beforehand before being incorporated into the fibre suspension.The material thus prepared has enhanced mineral filler retention and physical properties and can be used as printing and writing medium, covering medium, packaging medium or for obtaining complexes for industrial or foodstuffs use.Type: GrantFiled: February 20, 1987Date of Patent: July 24, 1990Assignee: Papeteries de GascogneInventor: Daniel Gomez
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Patent number: 4935097Abstract: A paper having an absolute dry moisture content (moisture content in absolute dry condition) of 1.8-7% is subjected to a heat calendering treatment at a temperature of 150.degree.-300.degree. C. under a linear pressure of 40 kg/cm or above to provide a paper which has both satisfactory surface smoothness and rigidity (stiffness) and is suited for use as a photographic support.Type: GrantFiled: August 15, 1988Date of Patent: June 19, 1990Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Naoya Tashiro, Hiroshi Uehara