Waste Paper Or Textile Waste Patents (Class 162/4)
  • Patent number: 10830623
    Abstract: Apparatus features a signal processor or signal processing module configured to: receive signaling containing information about a central air-core of an overflow pipe of a hydrocyclone where fluid flow is concentrated in an outer annular region of the overflow pipe that is against an inner wall of the overflow pipe during a normal operation of the hydrocyclone; and determine corresponding signaling containing information about a collapse of the central air-core of the overflow pipe of the hydrocyclone during an abnormal operation of the hydrocyclone, based upon the signaling received. The signaling contains information about a fluid flow rate of the fluid flow by detecting a change in the magnitude of a force and/or a moment on the probe.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: November 10, 2020
    Assignee: CIDRA CORPORATE SERVICES, INC.
    Inventors: Robert J. Maron, Juan F. Medina, Dylan Cirulis, Joseph Mercuri
  • Patent number: 10799885
    Abstract: A device and method for cleaning contaminated solid-liquid mixtures by removing impurities and contaminants from an aqueous paper fiber suspension by flotation. Apparatus includes a first conduit (2) for a liquid, a second conduit (3) for a solid-liquid mixture, a third conduit (4) connecting first and second conduit (2, 3), a Venturi mixing element (5) with cones (7, 11), having small through-opening into chamber (9) which forms a cavity with small through-opening (12, 13) of the cones; the through-opening of first cone (7) connected with first conduit (2) and the rough-opening connected to second conduit (2), the small through-opening (12) of first cone (7) and the non-conical conduit sections arranged in longitudinal axial alignment, a fourth conduit (6) for conveying gas, wherein the fourth conduit (6) opens to the Venturi mixing element (5), and a fractionator arranged downstream of the second conduit (3) for removing the foam produced by flotation.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: October 13, 2020
    Assignee: Rithco Papertec GmbH
    Inventors: Ralf Menne, Andreas Ritter, Oliver Mamat
  • Patent number: 10549454
    Abstract: A separation device includes a first shredding unit, and a first separation unit. The first shredding unit shreds a disposable diaper (processing target) containing a plastic (first material) and a water-absorbent polymer (second material) adhering to the plastic. The first separation unit has a first tubular portion, and a first beating member. The first separation unit separates the water-absorbent polymer passing through first holes from the disposable diaper by beating the disposable diaper with a plate surface of the first beating member with the first tubular portion being rotated in a state in which the disposable diaper shredded by the first shredding unit is accommodated therein.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: February 4, 2020
    Assignee: DAIKI CO., LTD.
    Inventor: Hiroshi Ito
  • Patent number: 10422079
    Abstract: The present invention provides a method for preserving recycled fiber by using biocides and a method for manufacturing paper using recycled fiber. The method for manufacturing paper, using recycled fiber as a raw material, comprises pulping procedure: pulping the raw material containing recycled fiber, and papermaking procedure: producing the paper with the pulp slurry obtained in the pulping procedure; wherein the total starch content of recycled fiber is measured before recycled fiber is pulped, and when the total starch content of recycled fiber is higher than a predetermined value, one or more biocides are added during the pulping procedure.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: September 24, 2019
    Assignee: ECOLAB USA INC.
    Inventors: Wenli Tu, Yumei Lu, Zhi Chen, Yulin Zhao
  • Patent number: 10377920
    Abstract: The present invention relates to a composition comprising hedgehog shaped particles, at least one binder, and at least one hydrophobizing agent and/or at least one hydrophilizing agent, a method for controlling the wettability of substrate surfaces using these compositions, as well as a material comprising these compositions.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: August 13, 2019
    Assignee: Omya International AG
    Inventors: Joachim Schoelkopf, Hans-Joachim Weitzel
  • Patent number: 10213790
    Abstract: A method for processing ash from waste incineration plants by wet classification includes mixing the ash with a liquid in a mixing hopper. After screening, the mixture is fed to a first classifying stage, including an upflow classifier and an upstream hydrocyclone, where it is separated into a good fraction and a residual fraction. The residual fraction is drawn off as a suspension on an upper side of a fluidized bed of the upflow classifier. The good fraction is drawn off on an underside of the fluidized bed. A pass through fraction is fed back into the hydrocyclone installation and a material flow containing particles which are smaller than a separation particle size is separated as cyclone overflow. The cyclone overflow is separated in a second classifying stage into a fine particle mineral fraction and a residue which has a grain size upper limit between 20 ?m and 50 ?m.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: February 26, 2019
    Assignee: Schauenburg Maschinen—Und Anlagen-Bau GmbH
    Inventor: Manfred Klinkhammer
  • Patent number: 10041199
    Abstract: A sheet manufacturing apparatus can determine if the sheets supplied as feedstock have already been recycled. The sheet manufacturing apparatus has a supply unit configured to supply feedstock; a defibrating unit configured to defibrate the feedstock; an depositing unit configured to deposit defibrated material defibrated by the defibrating unit; a forming unit configured to form a sheet from a web laid by the depositing unit; a marking unit configured to apply a mark to at least one of the web and the sheet; and a reading unit configured to read the mark imparted to the feedstock when a sheet having mark imparted thereto is supplied as the feedstock.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: August 7, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Toshiaki Yamagami, Yoichi Miyasaka, Nobuhito Takahashi
  • Patent number: 9963824
    Abstract: The present invention provides methods for deinking wastepaper by combined use of cutinase and chemical reagents, which relates to the field of enzyme engineering. The method comprises the following steps: pulp preparation, enzymatic hydrolysis, pulp washing and dewatering, and flotation. The enzyme for enzymatic hydrolysis is cutinase at a concentration of 10-20 U/g absolute dry pulp; and 0.5-4% Na2SiO3, 0.1-0.8% MgSO4, 0.1-0.8% EDTA, 0.1-4% H2O2 are used in the chemical treatment. With combined use of enzymatic and chemical treatment, the present invention has solved the problem of the current enzymatic method for deinking that requires large dosage of enzymes and thus high cost. Through proper choice of the kind and the amount of chemical reagents, synergistic effects of the enzymatic and chemical treatment can be achieved, thus increasing the effectiveness of the deinking process.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: May 8, 2018
    Assignee: Jiangnan University
    Inventors: Jing Wu, Lingqia Su, Ruoyu Hong
  • Patent number: 9776224
    Abstract: The present invention discloses a method of utilizing refuses in urban and rural areas. The method includes a refuses collection step, a refuse distributing step, a primary magnetic separation step, a primary crushing step, a primary elutriation and floatation step, a uniform cutting step, an acidification and anaerobic treatment step, a selection and separation step, a buffering and adjusting step, an additional anaerobic treatment step and a sludge sedimentation and concentration step. The present invention can make the anaerobic treatment method continuatively dispose the refuses, thereby thoroughly solving the problem that non-anaerobic refuses such as waste plastics, water fiber etc. can not be recycled and completely recycling resources in the refuses.
    Type: Grant
    Filed: April 2, 2011
    Date of Patent: October 3, 2017
    Assignee: WEIFANG JINSIDA INDUSTRIAL CO. LTD.
    Inventors: Guotian Liu, Mingquan Zhang, Ming'en Hu
  • Patent number: 9107406
    Abstract: The present invention refers to a process for bacterial stabilizing aqueous preparations like e.g. calcium carbonate slurries and a composition which can be used for the biocidal treatment of such aqueous preparations.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: August 18, 2015
    Assignee: Omya International AG
    Inventors: Nicola Di Maiuta, Patrick Schwarzentruber, Matthias Buri, Patrick Arthur Charles Gane
  • Patent number: 9045858
    Abstract: A sheet manufacturing apparatus includes a measuring unit configured to measure thickness and air permeability of a defibration object containing fibers, a defibrating unit configured to dry-defibrate the defibration object, and a classifying unit configured to separate and remove, by airflow classification, foreign substances other than the fibers from the defibrated material defibrated at the defibrating unit.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: June 2, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Katsuhito Gomi, Shunichi Seki
  • Patent number: 9045857
    Abstract: A sheet manufacturing apparatus includes a defibrating unit configured to defibrate a defibration object, a measuring unit configured to acquire information relating to the moisture contained in the defibration object, and a controller configured to modify an operating condition of the defibrating unit based on the information.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: June 2, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Katsuhito Gomi, Shunichi Seki
  • Patent number: 9045860
    Abstract: A sheet manufacturing apparatus includes a defibrating unit configured to defibrate stock material in a dry process, a transferring tube configured to transfer the stock material to the defibrating unit, and a magnet unit arranged such that a magnetic surface is exposed an inside of the transferring tube without being protruded inner than an inner surface of the transferring tube.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: June 2, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Shunichi Seki, Toshiaki Yamagami
  • Publication number: 20150068693
    Abstract: The present invention relates to a fibrous material composition having a predefined fraction of fresh fibres and/or waste paper with a further fraction of sweet grass, sedge, seagrass and/or algae fibres and adjuvants and water, where the weight fraction of sweet grass, sedge, seagrass and/or algae fibres is greater than 1 and less than 100 wt. % of the total material mass, in each case calculated as oven-dry material fraction. The invention further relates to a method for producing the fibrous material mixture and its use for producing fibrous-material-containing products.
    Type: Application
    Filed: March 11, 2013
    Publication date: March 12, 2015
    Inventor: D'AGNONE Uwe
  • Publication number: 20150053358
    Abstract: Methods to control organic contaminants in fibers are described. One method involves contacting the fibers with a) at least one zeolite and optionally b) detackifier, or an ester hydrolyzing enzyme, or both, for a sufficient time and in a sufficient amount to control the organic contaminants present in the fibers. This method is effective to reduce stickies in paper mill furnish formed with recycled fibers. A method for pitch control in paper mill furnish formed with virgin fibers is also provided. Resulting paper products formed from the processed fibers are also described as well as methods to make them.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 26, 2015
    Inventors: Weiping Ban, George S. Thomas
  • Patent number: 8961739
    Abstract: A method of splitting hollow cellulosic fibers employs the steps of wetting the fibers, feeding the wet fibers to a gaseous flow, and conducting the gaseous flow carrying the fibers through a venturi tube, the pressure drop in the venturi tube throat bringing a pressure difference between liquid inside the fibers and gas outside of the fibers and causing the fibers to split in their longitudinal direction, to open the lumen inside the fibers.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: February 24, 2015
    Inventor: Reijo K. Salminen
  • Patent number: 8926793
    Abstract: The purpose of the present invention is to provide technology for regenerating pulp having high quality with compact pulp regenerating equipment and less energy. In the pulp regenerating method of the present invention, pulp slurry containing 1.5 wt % or more of a solid component including waste paper pulp is separated into a long fiber fraction and a short fiber fraction by using an outward type slit screen including an opening portion having a slit width in the range of 0.1 mm to 0.3 mm. The solid component ratio of the long fiber fraction and the short fiber fraction is in the range from 10:90 to 60:40, and the difference in Canadian Standard Freeness of the long fiber fraction and the short fiber fraction is in the range of 100 ml to 300 ml.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: January 6, 2015
    Assignees: Nippon Paper Industries Co., Ltd., Aikawa Iron Works Co., Ltd.
    Inventors: Shisei Goto, Takaharu Noda, Hiroki Ohtake, Tatsumi Hosaka
  • Patent number: 8894811
    Abstract: A method of forming a dilute water slurry for water felting a basemat for an acoustical ceiling tile comprising delivering a bale of compressed mineral wool with a density of at least 8 lbs. per cubic foot at an unbaling station, releasing a binding holding the bale in compression, mechanically separating the fibers of a mineral wool bale with mechanical instrumentalities arranged to disperse the fibers to a generally uniform density of less than 2 lbs. per cubic foot prior to passage of the fibers through the tank inlet, and causing the separated mineral fibers to pass into the mixing tank for contact with water suspended binder.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: November 25, 2014
    Assignee: USG Interiors, LLC
    Inventor: Martin W. Brown
  • Patent number: 8882965
    Abstract: To provide a paper recycling device capable of recycling paper of increased whiteness level that can be widely used for applications other than paper for newspapers, the paper recycling device of the present invention has a dry type defibrator for crushing and defibrating paper, a first transport pipe for transporting defibrated material that was defibrated by the dry type defibrator, a cyclone for air classifying and deinking the defibrated material transported by the first transport pipe, a second transport pipe for transporting the defibrated material that was deinked by the cyclone, and a paper forming machine for forming paper with the defibrated material transported by the second transport pipe.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 11, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Toshiaki Yamagami, Ken Ikuma
  • Patent number: 8815051
    Abstract: Deinking of waste paper is obtained with the use of a hydrophobic kaolin-based deinking composition. The hydrophobic kaolin-based deinking composition is produced by hydrophobizing the kaolin clay and then blending the hydrophobic kaolin-based particles with a deinking surfactant. Separation and removal of ink is achieved either by washing deinking, flotation deinking or combination of these methods.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: August 26, 2014
    Assignee: Thiele Kaolin Company
    Inventors: Cesar I. Basilio, Steven W. Sheppard
  • Patent number: 8795470
    Abstract: A system and method of producing both loose cellulose insulation and bonded fiber/cellulose insulation products utilizing shredded paper particles, including making shredded paper particles in a shredded paper particle line and diverting a portion of the shredded paper particles to a bonded fiber/cellulose product line whereby the shredded paper particle line forms an in-process production and delivery of shredded paper particles to the bonded fiber/cellulose product line. Moisture is added to the shredded paper particles at the bonded fiber/cellulose product line, and bonded fiber/cellulose insulation products are produced with the bonded fiber/cellulose product line from the diverted portion of shredded paper particles and loose cellulose insulation is produced from shredded paper particles that are not diverted from the shredded paper particle line.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: August 5, 2014
    Inventors: Mark J. Henderson, Akiva Pinto
  • Publication number: 20140196858
    Abstract: An assembly of opposing discs or cones for a disperser where each disc or cone has mounted to it a plate or an array of plate segments with a front surface on each plate or array of plate segments and each surface has a series of bars, grooves and dams. The bars are in rows, with the rows separated by annular dams at substantially fixed radial locations, and the grooves are adjacent the bars in the rows so that the grooves form a serpentine passage extending radially between the opposing plates or array of plate segments on the opposing discs or cones. The opposing plate or array of plate segments are arranged such that the annular dams on one plate or array of plate segments face roughly the middle of the row of bars on the opposing plate or array of plate segments.
    Type: Application
    Filed: November 18, 2013
    Publication date: July 17, 2014
    Applicant: Andritz Inc.
    Inventor: Luc Gingras
  • Patent number: 8715462
    Abstract: Methods and apparatus are provided for exploiting coated paper products such as coated paper cups. End products include biofuels that have a high energy density. The biofuels may be mixed with coal or other fuels and have good binding characteristics. In some embodiments, useful chemicals such as HMF are produced. The methods involve heat treatment at relatively mild temperatures and pressures under acidic conditions.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: May 6, 2014
    Inventor: Alexis Fosse Mackintosh
  • Patent number: 8657995
    Abstract: [Object] It is to provide a process of manufacturing recycled paper pulp with high efficiency from newspaper (waste paper) or waste printed paper as a raw material, which is disposed and recovered from homes and offices, through a deinking process using a specific surfactant and electrolyzed water.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: February 25, 2014
    Assignee: Tech Corporation Co., Ltd.
    Inventors: Yoshinori Nakamoto, Masato Nomura
  • Publication number: 20140050934
    Abstract: A barrier packaging material containing a composite which comprises i) a cellulosic layer; ii) at least one metal layer which will dissolve under alkaline conditions; and iii) at least one polymer layer, in which the polymer is hydrolysable under alkaline conditions. The invention also relates to articles comprising the barrier packaging material. Further, the invention concerns the use of a polymer, which is hydrolysable under alkaline conditions, as a protective layer in barrier packaging products. In addition the present application is also concerned with a method for recycling the aforementioned barrier packaging products. Specifically the barrier packaging products are initially taken in an aqueous wastepaper suspension which is either pulped in an alkaline medium and/or treated in an alkaline medium in a deinking process and in which the metal and polymer are then separated from the cellulosic fibres contained in the cellulosic layer.
    Type: Application
    Filed: April 16, 2012
    Publication date: February 20, 2014
    Applicant: BASF SE
    Inventors: Kai Oliver Siegenthaler, Rainer Blum, Gabriel Skupin, Motonori Yamamoto
  • Publication number: 20140027075
    Abstract: To provide a paper recycling device capable of recycling paper of increased whiteness level that can be widely used for applications other than paper for newspapers, the paper recycling device of the present invention has a dry type defibrator for crushing and defibrating paper, a first transport pipe for transporting defibrated material that was defibrated by the dry type defibrator, a cyclone for air classifying and deinking the defibrated material transported by the first transport pipe, a second transport pipe for transporting the defibrated material that was deinked by the cyclone, and a paper forming machine for forming paper with the defibrated material transported by the second transport pipe.
    Type: Application
    Filed: December 20, 2011
    Publication date: January 30, 2014
    Applicant: Seiki Epson Corporation
    Inventors: Toshiaki Yamagami, Ken Ikuma
  • Publication number: 20140020856
    Abstract: The purpose of the present invention is to provide technology for regenerating pulp having high quality with compact pulp regenerating equipment and less energy. In the pulp regenerating method of the present invention, pulp slurry containing 1.5 wt % or more of a solid component including waste paper pulp is separated into a long fiber fraction and a short fiber fraction by using an outward type slit screen including an opening portion having a slit width in the range of 0.1 mm to 0.3 mm. The solid component ratio of the long fiber fraction and the short fiber fraction is in the range from 10:90 to 60:40, and the difference in Canadian Standard Freeness of the long fiber fraction and the short fiber fraction is in the range of 100 ml to 300 ml.
    Type: Application
    Filed: January 24, 2012
    Publication date: January 23, 2014
    Applicants: AIKAWA IRON WORKS CO., LTD., NIPPON PAPER INDUSTRIES CO., LTD.
    Inventors: Shisei Goto, Takaharu Noda, Hiroki Ohtake, Tatsumi Hosaka
  • Publication number: 20140000823
    Abstract: A method of splitting hollow cellulosic fibers employs the steps of wetting the fibers, feeding the wet fibers to a gaseous flow, and conducting the gaseous flow carrying the fibers through a venturi tube, the pressure drop in the venturi tube throat bringing a pressure difference between liquid inside the fibers and gas outside of the fibers and causing the fibers to split in their longitudinal direction, to open the lumen inside the fibers.
    Type: Application
    Filed: December 16, 2011
    Publication date: January 2, 2014
    Inventor: Reijo K. Salminen
  • Patent number: 8617353
    Abstract: The present invention provides a process for deinking printed waste paper comprising the steps of: a) converting the printed waste paper to an aqueous pulp slurry in a pulper, where ink is detached from paper pulp; b) subjecting the pulp slurry to flotation in order to remove hydrophobic contaminants including ink from the pulp slurry, said flotation being carried out in the presence of a deinking chemical additive comprising modified silica obtained by treating hydrophilic silica particles with a hydrophobic organic liquid or modified metal silicate obtained by treating hydrophilic metal silicate particles with a hydrophobic organic liquid or a mixture of such modified silica and modified metal silicate. The present invention increases the yield of the flotation step without affecting the brightness of the flotation accept.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: December 31, 2013
    Assignee: Kemira Oyj
    Inventors: Jean-Francois D'Allest, Tiina Sarja, Scott Rosencrance
  • Patent number: 8454799
    Abstract: The present invention relates to a novel pulp composition for paper or solid board production comprising an oxidized recovered paper pulp and/or an oxidized mechanical pulp into which from 1 to 500 mmol of carboxyl groups per kg and from 1 to 200 mmol of aldehyde groups per kg have been introduced by oxidation. The invention also relates to paper and solid board based on such a pulp composition and also to a process for producing such paper or solid board. The invention also relates to the use of oxidized recovered paper pulp and/or oxidized mechanical pulp for improving the retention and drainage properties of a pulp suitable for producing paper or solid board. The invention further relates to the use of oxidized recovered paper pulp and/or oxidized mechanical pulp for improving, i.e., increasing, the dry strength of paper and solid board.
    Type: Grant
    Filed: May 4, 2011
    Date of Patent: June 4, 2013
    Assignee: BASF SE
    Inventors: Christian Jehn-Rendu, Hans-Georg Lemaire, Oliver Koch, Tilo Habicher, Sylke Haremza, Markus Hoffmann
  • Patent number: 8454795
    Abstract: A system for forming bonded fiber/cellulose products includes a shredded paper particle manufacturing line producing shredded paper particle-based products, such as insulation, a bonded fiber/cellulose product line, and a collector for collecting a portion of the shredded paper particles generated by the shredded paper particle line for the bonded fiber/cellulose product line.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: June 4, 2013
    Inventors: Mark J. Henderson, Akiva Pinto
  • Patent number: 8444807
    Abstract: The invention relates to a method for preparing paper pulp from recycled paper containing contaminants characterized in that it comprises a first step of agitating the paper in the presence of water in order to obtain a mixture of fibers and contaminants in suspension, a second step of coarsely screening said mixture in order to separate the coarse contaminants from the rest of the suspension, a third step of fine screening in order to separate the fine contaminants from the coarsely-screened suspension and a fourth step of washing said coarse and fine contaminants in order to separate the reusable fibrous materials from the rest of the non-reusable contaminants. In particular, the invention aims to provide a method for preparing paper pulp that is capable of producing a good quality paper pulp from highly-contaminated recycled paper, especially having a contaminant level in the dry state that is greater than or equal to 15% by weight.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: May 21, 2013
    Assignee: SCA Tissue France
    Inventors: Philippe Colin, Philippe Beringuet, Xavier Gillot, Jean-Yves Tinel
  • Patent number: 8317974
    Abstract: A composition and method for deinking is disclosed. The composition and method contain an activated magnesium hydroxide or a magnesium hydroxide.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: November 27, 2012
    Assignee: Nalco Company
    Inventors: Prasad Y. Duggirala, Michael J. Murcia
  • Patent number: 8313616
    Abstract: A used paper recycling apparatus capable to be installed in small office or general household, friendly to environment and low in running cost, and assuring high confidentiality. A used paper recycling apparatus comprising a pulp making section for crushing and beating used paper and making into pulp, a paper making section for recycling paper by making used paper pulp from the pulp making section, and a control section for driving and controlling by interlocking the pulp making section and paper making section, which are incorporated in a furniture size apparatus case, in which the pulp making section includes a crushing unit for stirring and grinding the used paper, and a beating unit for beating the crushed used paper from the crushing unit, and the crushing unit and beating unit are circulating the used paper pulp.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: November 20, 2012
    Assignee: Seed Company Limited
    Inventors: Shigeru Tamai, Yuji Koyama
  • Patent number: 8287690
    Abstract: The present invention provides methods for deinking printed waster paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (“MIP”) to improve ink collection efficiency under traditional alkaline, reduced alkali, and true neutral deinking conditions. Deinking compositions are provided that include a hydrophobically-MIP substrate, a nonionic surfactant, and a fatty acid, or mixtures thereof. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentrations (“ERIC”) values.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: October 16, 2012
    Assignee: Kemira Chemicals, Inc.
    Inventors: Scott Rosencrance, Charles M. Ngome, Kevin M. Hale
  • Patent number: 8262849
    Abstract: A fiber mass suspension is produced by mixing together a fiber material (FM) and water (W) in a pulper (1). The formed fiber mass suspension is divided into an accept fraction and a reject fraction. The reject fraction is supplied continuously to a first secondary pulper (2) for further screening and defibring. The accept fraction formed in the first secondary pulper (2) is supplied continuously for further processing and the reject fraction formed in the first secondary pulper (2) is supplied continuously to a second secondary pulper (3) for further processing. The accept fraction formed in the second secondary pulper (3) is supplied continuously for further processing.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: September 11, 2012
    Assignee: Metso Paper, Inc.
    Inventor: Timo Vuorinen
  • Publication number: 20120204483
    Abstract: A process for reclaiming food-contaminated solid waste streams from fast food restaurants, casual dining restaurants, cafeterias, schools, colleges and universities, concession stands, arenas, stadiums, movie theaters, large city street trash bins and other entertainment venues, and other places that offer simple food items for dine in or carry-out that are currently sent to a land fill. The inventive process offers total solid waste reclamation with zero waste water discharge, zero landfill and minor source air emissions, resulting in 100% reclamation and a 100% sustainable process. This process can also be used on solid waste from reclamation centers and manufacturers who currently land fill their waste.
    Type: Application
    Filed: February 8, 2012
    Publication date: August 16, 2012
    Applicant: PC Fibre Technology, LLC
    Inventors: Ronald H. Van den Heuvel, Daniel Platkowski
  • Publication number: 20120206533
    Abstract: An ink coating composition is disclosed herein. The ink coating composition includes a polymer latex and an adhesion promoting agent. A non-ionic surfactant is also included in the ink coating composition. The non-ionic surfactant has an HLB value ranging from about 6 to about 15. The ink coating composition also includes a balance of water.
    Type: Application
    Filed: February 15, 2011
    Publication date: August 16, 2012
    Inventors: Hou T. Ng, Wenjia Zhang
  • Patent number: 8177071
    Abstract: An injector for a flotation cell, comprising a feed channel for feeding a fiber suspension flow to the flotation cell, a flow distribution element for distributing the fiber suspension flow fed to the injector into partial flows, a mixing apparatus for mixing air with the fiber suspension flow, and at least one air input point for sucking air to be mixed with the fiber suspension flow into the injector. The feed channel, the flow distribution element and the mixing apparatus are in the injector arranged with respect to one another such that a flow direction of the fiber suspension flow in the feed channel is substantially opposite to a flow direction of the fiber suspension flow through the flow distribution element and the mixing apparatus.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: May 15, 2012
    Assignee: Metso Paper, Inc.
    Inventor: Erkka Nieminen
  • Patent number: 8167133
    Abstract: An injector of a flotation cell, the injector comprising a feed pipe for feeding a fiber suspension flow into the flotation cell, a mixing apparatus for mixing air into the fiber suspension flow and at least one air feed connection arranged before the mixing apparatus for feeding air into the injector. The injector further comprises a nozzle section which is arranged before the mixing apparatus and comprises an aperture plate provided with apertures and nozzles fixed to the aperture plate substantially at the apertures after the aperture plate, there being open spaces between the nozzles. The air to be fed from the air feed connection is arranged to flow into the spaces between the nozzles and further into the mixing apparatus with the partial flows of the fiber suspension flow entering from the nozzles.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: May 1, 2012
    Assignee: Metso Paper, Inc.
    Inventors: Erkka Nieminen, Veikko Kankaanpää, Vesa Harju
  • Patent number: 8157954
    Abstract: There are provided a method of recovering a base paper for gypsum board for continuously and efficiently recovering a base paper for gypsum board from a waste material of gypsum board including a gypsum core and the base paper for gypsum board adhering thereto. The method of recovering a base paper for gypsum board includes steps of breaking the waste material of gypsum board, separating a gypsum component and a paper piece of the base paper for gypsum board from the broken waste material of gypsum board, and washing the separated paper piece with water using a rotary drum-type washing device so as to eliminate a gypsum component adhering to the paper piece.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: April 17, 2012
    Assignee: Yoshino Gypsum Co., Ltd.
    Inventors: Michio Nishi, Takehiro Tanaka, Shizuo Taira
  • Patent number: 8133350
    Abstract: A composition and method for deinking is disclosed. The composition and method contain an activated magnesium silicate or a magnesium silicate.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: March 13, 2012
    Assignee: Nalco Company
    Inventors: Prasad Y Duggirala, Michael J Murcia
  • Patent number: 8133351
    Abstract: A composition and method for deinking is disclosed. The composition and method contain an activated magnesium hydroxide or a magnesium hydroxide.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: March 13, 2012
    Assignee: Nalco Company
    Inventors: Prasad Y Duggirala, Michael J Murcia
  • Publication number: 20120048491
    Abstract: Methods and apparatus are provided for exploiting coated paper products such as coated paper cups. End products include biofuels that have a high energy density. The biofuels may be mixed with coal or other fuels and have good binding characteristics. In some embodiments, useful chemicals such as HMF are produced. The methods involve heat treatment at relatively mild temperatures and pressures under acidic conditions.
    Type: Application
    Filed: April 30, 2010
    Publication date: March 1, 2012
    Applicant: EVE RESEARCH INC.
    Inventor: Alexis Fosse Mackintosh
  • Publication number: 20120043035
    Abstract: A recording material, containing nonionic surfactants, including: a supporting substrate, a first bottom base coat applied to at least one surface of said substrate, and a second topcoat layer applied over said bottom base coat. The supporting substrate or the bottom base coat includes nonionic surfactants that have HLB values that are inferior to 15. Also disclosed is a method to deink printed waste papers wherein the waste papers contain recording materials, containing nonionic surfactants such as defined herein.
    Type: Application
    Filed: August 18, 2010
    Publication date: February 23, 2012
    Inventors: Manoj K. Bhattacharyya, Hou T. Ng
  • Patent number: 8118171
    Abstract: The disclosure relates to a process and device for aerating suspensions, particularly to flotate them, for example in deinking of pulp suspensions which includes a primary and secondary stage. In order to improve ash removal, a washing process is interposed between the primary and secondary stages.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: February 21, 2012
    Assignee: Andritz AG
    Inventor: Helmuth Gabl
  • Patent number: 8088254
    Abstract: Pulp processing equipment used to produce high-quality recycled pulp with little damage to fibers, high brightness and low residual ink by means of a force selectively acting on fiber surfaces during the process of recycling waste paper is disclosed. Moreover, fiber surfaces are modified by means of a force acting on only the fiber surfaces to obtain high-quality pulp and to render harmless dirts deteriorating pulp quality. A jet system is provided having one or more nozzles for jetting an aqueous slurry containing a material comprising cellulose into a vessel.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: January 3, 2012
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Shisei Goto, Keigo Watanabe, Hiromichi Tsuji, Takanori Miyanishi
  • Publication number: 20110300376
    Abstract: Disclosed herein are paper pulp-based materials that are reinforced with reprocessable alkyd resins, which are formed in situ with the materials. Also disclosed herein are methods for coating paper pulp-based materials with alkyd resins, and methods of recycling alkyd resin coated paper pulp-based materials.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 8, 2011
    Inventors: Isao Noda, Shrish Yashwant Rane, William Maxwell Allen
  • Publication number: 20110290434
    Abstract: The present invention relates to a novel pulp composition for paper or solid board production comprising an oxidized recovered paper pulp and/or an oxidized mechanical pulp into which from 1 to 500 mmol of carboxyl groups per kg and from 1 to 200 mmol of aldehyde groups per kg have been introduced by oxidation. The invention also relates to paper and solid board based on such a pulp composition and also to a process for producing such paper or solid board. The invention also relates to the use of oxidized recovered paper pulp and/or oxidized mechanical pulp for improving the retention and drainage properties of a pulp suitable for producing paper or solid board. The invention further relates to the use of oxidized recovered paper pulp and/or oxidized mechanical pulp for improving, i.e., increasing, the dry strength of paper and solid board.
    Type: Application
    Filed: May 4, 2011
    Publication date: December 1, 2011
    Applicant: BASF SE
    Inventors: Christian JEHN-RENDU, Hans-Georg Lemaire, Oliver Koch, Tilo Habicher, Sylke Haremza, Markus Hoffmann
  • Patent number: 8052837
    Abstract: Waste paper is deinked by a composition which comprises a surfactant and a hydrophobic-based deinking component.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: November 8, 2011
    Assignee: Thiele Kaolin Company
    Inventors: Cesar I. Basilio, Steven W. Sheppard