Class / Patent application number | Description | Number of patent applications / Date published |
162004000 | Waste paper or textile waste | 67 |
20080210391 | METHOD FOR LOADING FIBERS CONTAINED IN A PULP SUSPENSION - The present invention serves for loading a pulp suspension (S) with calcium carbonate. Liquid calcium hydroxide as milk of lime ( | 09-04-2008 |
20080236769 | Biological De-Inking Method - A method of de-inking wastepaper by pulping the paper in the presence of an enzyme is disclosed. The enzyme dislodges the ink particles from the paper fibers. The preferred enzymes are the acid resistant carbohydrases. The de-inking medium is an aqueous solution of the enzyme, preferably maintained at a pH less than about 7 and at a temperature between about 20° C. and about 60° C. No conventional chemical de-inking agents are required. The dislodged ink particles may be removed by any conventional method, such as flotation or washing. | 10-02-2008 |
20080283206 | Method of measuring macro and micro stickies in a recycled sample containing pulp fibers - A method of measuring macro and micro stickies in a recycled sample containing pulp fibers is disclosed. The method includes forming a slurry of the recycled macro stickies and a liquid and using a first separation device to separate out the macro stickies and the pulp fiber while collecting the screenate. The macro stickies and the pulp fibers are then washed with additional liquid to further separate out any macro stickies while again collecting the screenate. The macro stickies are then removed from the first separation device and are measured. The method also includes agglomerating the micro stickies in the screenate to form agglomerated micro stickies. The screenate is routed through a second separation device to separate out the agglomerated micro stickies. The agglomerated micro stickies are then removed from the separation device and are measured. | 11-20-2008 |
20080302491 | Method for Preparing Paper Pulp From Recycled Paper Containing Contaminants - 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 fibres 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. | 12-11-2008 |
20090133845 | METHOD OF CONTROLLING RECYCLED FIBRE LINE, AND RECYCLED FIBRE LINE - Measuring devices measure at least one characteristic of the fibres of recycled fibre pulp and at least one characteristic of ink, and the measuring devices feed the measurement results to controllers of a pulping subprocess and a dispersing subprocess, the controllers performing multivariable-based predictive calculation and optimization of control functions. The controllers of the pulping sub-process and the dispersing subprocess generate control variables on the basis of the measurement results for mechanical and chemical processing of the recycled fibre pulp to be performed in the pulping subprocess and the dispersing subprocess. | 05-28-2009 |
20090250179 | COMPOSITIONS AND COMPOSITES OF CELLULOSIC AND LIGNOCELLULOSIC MATERIALS AND RESINS, AND METHODS OF MAKING THE SAME - Cellulosic or lignocellulosic materials, and compositions and composites made therefrom, are disclosed. | 10-08-2009 |
20100200181 | PULP MANUFACTURING METHOD OF USED PAPER RECYCLING APPARATUS, PULP MANUFACTURING DEVICE OF USED PAPER RECYCLING APPARATUS, AND USED PAPER RECYCLING APPARATUS - The invention presents a pulp manufacturing technology for realizing a used paper recycling apparatus of furniture size that can be installed not only in a large office, but also in a small shop or general household. In the beating process of the pulp making process for fragmenting and beating the used paper for manufacturing used paper pulp, a grinder having a pair of beating disks rotated relatively, beating action surfaces of the beating disks are disposed oppositely across a tiny beating gap, thereby a used paper pulp circulation route is formed, in which the used paper pulp beaten by the grinder is processed in the beating process while being circulated in the used paper pulp circulation route, and the beating gap of the beating action surfaces is adjusted to be narrower gradually from the beginning till the end of the beating process. As a result, in a limited narrow working space, a smooth and efficient beating operation is realized from the beginning till the end of the beating process. | 08-12-2010 |
20100276092 | METHOD OF PRE-TREATING WOODCHIPS PRIOR TO MECHANICAL PULPING - A method of making pulp adapted to be used in forming corrugating medium is disclosed. The method comprises cooking woodchips in a first liquor in the absence of an alkali addition. The method further comprises mechanically fiberizing the woodchips to form a pulp. The method further comprises separating hydrolyzate from the pulp. The method further comprises treating the pulp with a second liquor, the second liquor including at least one alkali. The method further comprises refining the pulp. | 11-04-2010 |
20110011544 | WET PULPING SYSTEM AND METHOD FOR PRODUCING CELLULOSIC INSULATION WITH LOW ASH CONTENT - Apparatus and method for recovering organic cellulosic fibers from landfill materials (such as post consumer, municipal and industrial waste materials). The apparatus and method selectively introduces waste materials containing organic cellulosic fibers into a size reduction machine. The pre-cleaned waste materials are conveyed to a tank, drum, or tunnel type fiber recovery apparatus. The waste materials are subjected to mechanical and fluid fiberization for a selected period of time to produce useful products, such as cellulosic insulation with a total ash content equal to or less than 10%, as well animal and fowl bedding products that is substantially devoid of moisture content, among other products. | 01-20-2011 |
20110094691 | PROCESS FOR REGENERATING POST-CONSUMER AND POST-INDUSTRIAL FIBERS - Processes for producing regenerated fibers from post-consumer and post-industrial waste are disclosed. The process generally involves obtaining a source of post-industrial and/or post-consumer scrap material comprising fibers, cutting the material into a desirable size in the range of from one square inch to thirty square inches, detangling the fibers, removing any finish from the fibers, if present, combing and/or picking the fibers to convert any threads into fibers, humidifying the fibers, and intimately blending the fibers. These regenerated fibers can be blended with other fibers, and intimately blended to provide a uniform blend of fibers. The fibers can then be subjected to a carding process to orient the fibers. The regenerated fibers can be used in any application that would otherwise use virgin fibers, including their use to form woven or non-woven materials. | 04-28-2011 |
20110108220 | PULP CONCENTRATION ADJUSTING METHOD OF USED PAPER RECYCLING APPARATUS, PULP CONCENTRATION ADJUSTING DEVICE OF USED PAPER RECYCLING APPARATUS, AND USED PAPER RECYCLING APPARATUS - A pulp concentration adjusting technology for realizing a used paper recycling apparatus of furniture size that can be installed in a small shop or general household. The used paper recycling apparatus having a pulp making unit and a paper making unit includes a beating concentration adjusting unit for adjusting the beating concentration of the used paper pulp in the pulp making unit, and a paper making concentration adjusting unit for adjusting the paper making concentration of the used paper pulp in the paper making unit, in which the beating concentration adjusted in the beating concentration adjusting unit is set at a high concentration capable of beating in the pulp making unit, and the paper making concentration adjusted in the paper making concentration adjusting unit is set at a low concentration capable of making paper in the paper making unit. Therefore, the concentration of the used paper pulp is adjusted in two stages, and the concentration can be adjusted by effectively utilizing the small working space of the used paper recycling apparatus of furniture size, and the used paper can be recycled at high operation efficiency. | 05-12-2011 |
20110162810 | METHOD AND DEVICE FOR PROCESSING WASTE PAPER - The invention relates to a method for processing waste paper according to the following steps: a) the waste paper is decomposed into fibres, b) the fibres are washed, c) the fibres are subjected to a dispersion process, d) the fibres are subjected to a flotation method, e) the fibres are processed for further treatment in a paper machine. The liquid from the fibres obtained in step b) is reintroduced into the fibre flow prior to step d). The invention also relates to a device for carrying out said method. | 07-07-2011 |
20110220305 | FOREIGN MATTER REMOVING APPARATUS, COLOR ERASING APPARATUS, AND FOREIGN MATTER REMOVING METHOD - A foreign matter removing apparatus includes: a removing plate disposed above a recording medium carriage path, a first sensor and a second sensor which interpose the removing plate therebetween at equal distances in a carriage direction of the recording medium and are disposed on both sides of the recording medium carriage direction, a first plate and a second plate which come in contact with each other at a position below the removing plate, and are disposed at positions opposed to the first sensor and the second sensor while interposing the recording medium carriage path therebetween so as to be opened and closed in a direction perpendicular to the recording medium carriage direction, a first driving roller disposed between the first sensor and the removing plate, and a second driving roller disposed between the second sensor and the removing plate. | 09-15-2011 |
20110220306 | COATING COMPOSITIONS COMPRISING ALKYL KETENE DIMER AND ALKYL SUCCINIC ANHYDRIDES FOR USE IN PAPER MAKING - Additives for paper making are disclosed herein. Specifically, the additives are wax-free alternatives to conventional coatings, including ASA, AKD and optionally an acrylic containing composition. Other additives may be included in the coating, such as cationic particles or compositions. The coatings may be used at a variety of points during the paper making process, including on the calender stack and in the wet end. | 09-15-2011 |
20110253325 | PROCESS FOR MANUFACTURING INSULATING MATERIAL - Process for producing cellulose-based thermal and/or acoustic insulation material, characterised in that said insulation material comprises paper sludge and wherein said insulation material is in form of flakes. | 10-20-2011 |
20110259537 | PAPER FILLER COMPOSITION - A method for preparing an aqueous suspension comprising microfibrillated cellulose and inorganic particulate material, the method comprising a step of microfibrillating a fibrous substrate comprising cellulose in an aqueous environment in the presence of an inorganic particulate material. | 10-27-2011 |
20110290434 | PULP COMPOSITION FOR PAPER AND SOLID BOARD PRODUCTION - 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. | 12-01-2011 |
20140000823 | METHOD AND APPARATUS FOR THE SPLITTING OF CELLULOSIC FIBERS, METHODS FOR THE TREATMENT OF FIBROUS PULPS FOR A PAPERMAKING PROCESS, METHODS FOR PAPER DRYING AND PAPER PRODUCTS WITH SPLIT FIBERS | 01-02-2014 |
20140020856 | PROCESSES FOR PREPARING PULP AND PAPER - The purpose of the present invention is to provide technology for regenerating pulp having high quality with compact pulp regenerating equipment and less energy. | 01-23-2014 |
20140027075 | PAPER RECYCLING SYSTEM AND PAPER RECYCLING METHOD - 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. | 01-30-2014 |
20140196858 | APPARATUS FOR DISPERSER PLATE AND METHOD TO REFINE PAPER - 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. | 07-17-2014 |
20150299950 | METHOD FOR RECYCLING WASTE MATERIAL WITH REDUCED ODOR EMISSION - A method for recycling waste material including waste paper comprises the steps of introducing the waste material into a pressure vessel, re-pulping the waste paper in the pressure vessel at an elevated processing temperature and pressure to form a treated waste material including substantially re-pulped waste paper, thereafter introducing cooling water into the pressure vessel so as to cool the treated waste material in the pressure vessel to a discharge temperature below the elevated processing temperature and reduce odor emitted by the treated waste material, and thereafter discharging the treated waste material from the pressure vessel. The recovered paper pulp fraction is suitable as a feedstock in the manufacture of a variety of paper products including paper tissue and paper towel products. | 10-22-2015 |
20160083902 | METHOD FOR RECYCLING BALED WASTE MATERIAL - A method to facilitate recycling waste material, including waste paper and organic material, comprises the steps of receiving a plurality of plastic-wrapped compressed bales of the waste material at a waste material recycling location from a remote baling location, thereafter introducing the plurality of plastic-wrapped compressed bales into a re-pulping device at the waste material recycling location to form a treated waste material including substantially re-pulped waste paper, and thereafter discharging the treated waste material from the re-pulping device. | 03-24-2016 |
20160145805 | PROCESS FOR THE PRODUCTION OF A MICROFIBRILLATED CELLULOSE COMPOSITION - The present invention relates to a process for the production of microfibrillated cellulose composition, wherein the microfibrillated cellulose has an average fiber length in the range from 500 to 1300 μm and a percentage of fiber length in the category <200 μm of at least 15%, obtained by subjecting an aqueous mixture comprising 30 to 70% by weight of cellulose containing fibers to mechanical shearing at a temperature in the range of from >40° C. to <120° C. in the presence of at least one thermostable biocide, to the microfibrillated cellulose composition obtained in this process and their use in a process for production of paper, card and board comprising draining a paper stock comprising the microfibrillated cellulose composition with sheet formation in the wire. | 05-26-2016 |
162005000 | With organic agent | 42 |
20080264584 | New Composition and Process for the Treatment of Fibre Material - The present invention relates to a stabilizing composition comprising following components (A) a polymer having following formula | 10-30-2008 |
20080264585 | Process for Deinking Recycled Fibers and Use of an Acid Deinking - The present invention relates to a process for deinking recycled fibers wherein an aqueous pulp suspension with recycled fibers, printing ink and calcium carbonate is provided. The hardness of the suspension is stabilized by causing dissolution of calcium carbonate contained in the suspension or in an aqueous fluid added to the suspension. The increased hardness suspension is subjected to flotation to separate said printing ink from the suspension. The present invention also relates to use of a weak acid for dissolving calcium carbonate and for stabilizing the hardness in a flotation process for the deinking of an aqueous pulp suspension containing said recycled fibers, printing ink and calcium carbonate. | 10-30-2008 |
20090020243 | Use of Cyclodextrins for Reducing Deposits During Paper Production - The present invention relates to a method for preventing or reducing deposits in pulp and paper making processes by including a cyclodextrin during or after pulp formation in an amount effective for preventing or reducing the deposits. Optionally the cyclodextrin comprising the deposit is subsequently separated from the pulp. | 01-22-2009 |
20090025891 | COMPOSITION AND METHOD FOR IMPROVING RETENTION AND DRAINAGE IN PAPERMAKING PROCESSES BY ACTIVATING MICROPARTICLES WITH A PROMOTER-FLOCCULANT SYSTEM - A composition and method for improving retention and drainage in a papermaking process is disclosed. An unexpected synergistic effect has been observed when certain amounts of a promoter are used in conjunction with a microparticle. Optionally, a flocculent is also used to further improve the observed synergism. The microparticle includes an inorganic anionic or cationic siliceous material. The promoter includes a modified diallyl-N,N-disubstituted ammonium halide polymer. The flocculant includes one or more high molecular weight, water-soluble cationic, anionic, nonionic, zwitterionic, or amphoteric polymers. | 01-29-2009 |
20090032206 | PROCESSES USED IN THE MANUFACTURE OF PAPER PRODUCTS - Surfactant penetrant treating solutions and their use in the manufacture of paper products. The surfactant penetrant treating solutions include two types. The first type is an enzymatic surfactant penetrant treating solution, and the second type is a defoaming surfactant penetrant treating solution. The solutions may be used to break down recyclable paper products for use as feedstock in paper manufacturing processes. The solutions may also be used to clean the internal and external components of machinery in a paper manufacturing line. | 02-05-2009 |
20090120596 | Removal of organic deposits from recycled fibers used for producing paper - Paper is made from paper stock containing pulp derived from recycled paper fibers by adding to the paper stock, an effective amount of an additive for reducing the deposition of contaminants, the additive one or more silicon containing material(s) selected from the group of:
| 05-14-2009 |
20090165967 | Use of Modified Inorganic Particles in Deinking - The present invention provides methods for deinking printed waste 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. | 07-02-2009 |
20100006242 | DEINKING A CELLULOSIC SUBSTRATE USING MAGNESIUM SILICATE - A composition and method for deinking is disclosed. The composition and method contain an activated magnesium silicate or a magnesium silicate. | 01-14-2010 |
20100006243 | DEINKING A CELLULOSIC SUBSTRATE USING MAGNESIUM HYDROXIDE - A composition and method for deinking is disclosed. The composition and method contain an activated magnesium hydroxide or a magnesium hydroxide. | 01-14-2010 |
20100006244 | DEINKING A CELLULOSIC SUBSTRATE USING AN INORGANIC MINERAL - A composition and method for deinking is disclosed. The composition and method contain an activated inorganic mineral. | 01-14-2010 |
20100071860 | CREPE WADDING, METHOD FOR MANUFACTURING CREPE WADDING, FUNCTIONAL MULCHING TEXTILE - The present invention relates to crepe wadding and a method for manufacturing the crepe wadding wherein after waste cotton products are collected to produce cotton fiber material dried and recycled therefrom, the cotton fiber material is mixed to a pulp fiber material obtained from pulp or recycled paper and the mixture is matured, thereby making the crepe wadding, and to a functional mulching textile having the crepe wadding wherein the crepe wadding is laminated to another crepe wadding or a cotton non-woven fabric and a variety of functional materials are charged into the space formed between the laminated sheets, thereby preventing water and soil from being polluted during the manufacturing and further being utilized in various fields including mulching and environment-friendly organic agriculture according to the kinds of the functional materials charged during the laminating process. | 03-25-2010 |
20100126680 | Method For Controlling Enzymatic Decomposition Of Peroxide and Products Thereof - A method is described controlling enzymatic decomposition of peroxide comprising contacting a composition containing a peroxide decomposing enzyme with an aldehyde functional polymer added in an amount effective to control the enzyme. There also is a method described for bleaching cellulose pulp, such as recycled paper pulp or other pulps, with an aldehyde functional polymer introduced in an amount effective to control peroxide decomposing enzymes present in the pulp being bleached. Paper products containing the aldehyde functional polymer used to control peroxide decomposing enzymes in a bleaching treatment of cellulose pulp are also provided. | 05-27-2010 |
20100139875 | Composition and Process for the Treatment of Fibre Material - The invention relates to a stabilizing composition comprising following components
| 06-10-2010 |
20100163192 | COMPOSITIONS AND COMPOSITES OF CELLULOSIC AND LIGNOCELLULOSIC MATERIALS AND RESINS, AND METHODS OF MAKING THE SAME - Cellulosic or lignocellulosic materials, and compositions and composites made therefrom, are disclosed. | 07-01-2010 |
20100206498 | METHOD OF DEINKING RECOVERED PAPER - The object of the present invention is to provide a process for producing deinked pulp from recovered paper containing stickies while preventing excessive reduction in the size of stickies, lowering the COD of effluents, and producing deinked pulp with a smaller residual ink content. | 08-19-2010 |
20100263812 | SYSTEM AND METHOD FOR REPULPING OF PAPER PRODUCTS AND IMPROVEMENT OF WATER QUALITY WITH DIPOLAR SOLVENTS AND RECOVERY - An enhanced method of repulping paper and improving water quality by placing used paper product material in an aqueous solution of dipolar aprotic protophylic solvent, processing it, and recovering recycled pulp based on two physical reactions of the dipolar solvent: first with water from one part of the solvent, and second with cellulosic material from the other part of the solvent. The water reaction involves a rearrangement of hydrogen bonds within the water, improving its reactivity and solvent capacity, and the cellulosic reaction involves dissolution of hemicellulose in a manner which results in reduced fibre loss and improved pulp quality. The net result is more efficient pulping and reduced environmental impact. | 10-21-2010 |
20100269989 | USE OF 1,3-SELECTIVE LIPASES FOR PITCH CONTROL IN PULP AND PAPER PROCESSES - Formulations for pitch control, and methods of making and using thereof, are described herein. The formulations contains one or more 1,3-selective lipases. 1,3-selective lipases catalyze the hydrolysis of the terminal ester groups in triglycerides leaving the internal ester group intact. The enzyme formulations can contain one or more additives, such as dispersants, metal ions, absorbents, adsorbents, cationic polymers, and combinations thereof. The enzyme formulation is typically applied as a solution to the pulp stock. The enzyme formulations can be applied at any of one or more various points during the pulping and paper manufacturing processes. The use of selective lipase(s) decreases the total concentration of fatty acids in the system, and catalyzes the formation of monoglycerides, which are more effective at dispersing fatty acids than glycerol, the product of non-selective lipases, thereby improving pulp and paper machine runnability and pulp and paper quality. | 10-28-2010 |
20110030907 | METHOD OF PRODUCING RECYCLED PAPER PULP FROM WASTE PRINTED PAPER AS RAW MATERIAL - [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. | 02-10-2011 |
20110108221 | POLYESTER SURFACTANTS FOR DEINKING - The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking. 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 concentration values. | 05-12-2011 |
20110155334 | Use of Modified Inorganic Particles With Deinking - 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. | 06-30-2011 |
20110192558 | RECYCLING OF FIBRE PRODUCTS - In a method of recycling printed paper, the collector chemical composition used to aid ink removal after pulping of the paper advantageously comprises an aqueous emulsion of a polysiloxane and a delivery aid for the polysiloxane, the delivery aid comprising one of more compounds selected from an alkali metal salt of a fatty acid moiety, and a nitrogenous salt of a fatty acid moiety, and a water-swellable polymer. The collector chemical composition is effective at low concentration, gives good brightness gain, low level of fibre loss, and effluent water low in siliceous material. | 08-11-2011 |
20120031573 | Deinking of waste paper - 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. | 02-09-2012 |
20120043035 | RECORDING MATERIAL CONTAINING NONIONIC SURFACTANTS - 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. | 02-23-2012 |
20120067532 | High Brightness Pulps From Lignin Rich Waste Papers - This present invention relates to methods for preparing premium or near-premium brightness pulps for towel and tissue applications from fiber sources comprising substantial amounts of lignin-containing pulp and chemical pulp while controlling fines, scale and anionic trash. These methods use alkaline hydroxide in combination with peroxide and oxygen for initial bleaching stages followed by treatment with a peroxide activating agent to convert residual peroxide in the pulp into peracetic acid followed by a final reductive bleaching stage. | 03-22-2012 |
20120103542 | INK DISPERSION - An ink dispersion includes an ink vehicle and a colorant dispersed in the ink vehicle. The ink vehicle includes a non-ionic surfactant and a solvent. The non-ionic surfactant has an HLB value ranges from about 5 to about 16, and is chosen from: i) a material represented by one of the formulas R | 05-03-2012 |
20120103543 | DEINKING PROCESS - 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. | 05-03-2012 |
20120186761 | Method For Reducing Negative Effects Of Adhesive Contaminants In Systems Of Substances Comprising Waste Paper - The invention relates to a method for reducing the negative effects of adhesive contaminants in the processing of waste paper, wherein an aqueous polymer dispersion comprising one component A and one component B for coagulation and detackification of stickies is added during the processing of waste paper, wherein component A is a homo- and/or copolymer of methyl methacrylate, acrylate and/or styrene and component B is a styrene copolymer having acrylic acid, maleimide and/or maleic acid hydride. The polymer dispersion can optionally comprise another component C, a cationic fixing agent that supports the coagulation of the stickies. | 07-26-2012 |
20120216970 | COMPOSITION AND METHOD FOR IMPROVING RETENTION AND DRAINAGE IN PAPERMAKING PROCESSES BY ACTIVATING MICROPARTICLES WITH A PROMOTER-FLOCCULANT SYSTEM - A composition and method for improving retention and drainage in a papermaking process is disclosed. An unexpected synergistic effect has been observed when certain amounts of a promoter are used in conjunction with a microparticle. Optionally, a flocculent is also used to further improve the observed synergism. The microparticle includes an inorganic anionic or cationic siliceous material. The promoter includes a modified diallyl-N,N-disubstituted ammonium halide polymer. The flocculant includes one or more high molecular weight, water-soluble cationic, anionic, nonionic, zwitterionic, or amphoteric polymers. | 08-30-2012 |
20120305206 | METHOD FOR REMOVING INK FROM PAPER - A method for removing ink from printed paper comprising: (a) pulping printed paper at least 25 wt % of which is old newsprint at a consistency of at least about 3% to obtain a pulp slurry; (b) treating the pulp slurry with an ink removing system, which system comprises: (i) a combination of lipase and at least one second enzyme chosen from amylase, xylanase or cellulase, and (ii) a non-ionic surfactant, in amounts effective to release ink from said pulp slurry, wherein the lipase is present in an amount of at least about 0.001 wt % based on the dry content of the pulp slurry and the ratio of the at least one second enzyme:lipase is at least about 1.2:1; and (c) separating the released ink from the pulp slurry, wherein the treating step is carried out prior to a deinking flotation stage. | 12-06-2012 |
20130037229 | POLYESTER SURFACTANTS FOR DEINKING - The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking 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 concentration values. | 02-14-2013 |
20130118697 | PROCESS FOR RECYCLING WASTE PAPER, PRODUCT OBTAINED THEREFROM AND ITS USES - The present invention relates to a bioprocess for recycling waste paper originated from high quality paper comprising the following steps: a) preparation of pulp; b) dilution with water of the pulped material obtained in a) c) enzymatic treatment of pulp; d) addition of inorganic salts and glues; e) dilution with water of the material obtained in d) f) filtration by vacuum; optional press; and g) drying In particular, said high quality paper is printed paper. The present invention also relates to the obtainable product by the above mentioned process. The present invention further relates to the different uses of the product such as building and construction material, eco-packaging material and eco-decorative material. | 05-16-2013 |
20130180677 | Methods To Control Organic Contaminants In Fibers - Methods to control organic contaminants in fibers are described. One method involves contacting the fibers with a) diatomaceous earth and 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. | 07-18-2013 |
20130284386 | DEINKING COMPOSITIONS AND METHODS OF USE - Provided are surfactant compositions and their use for deinking various substrates, such as waste paper. The compositions comprise: (a) an alkyldiphenyloxide disulfonate compound of formula (I): wherein R | 10-31-2013 |
20130292070 | PROCEDURE FOR OBTAINING NANOFIBRILLATED CELLULOSE FROM RECOVERED PAPER - A procedure for obtaining nanofibrillated cellulose starting from a raw material including recycled or recovered paper, or recovered paper pulp or recovered cellulose comprises the stages of: immersing the raw material in an acetic acid dilution, in a concentration of 10% to 50% by volume, during a time inverse to the concentration of acetic acid; stirring the raw material immersed in the acetic acid dilution; and subsequently subjecting the cellulosic material to a mechanical process of longitudinal separation of fibres, by shear forces applied through a mixer or similar equipment capable of creating enough shearing on cellulose pulp. Thanks to the above procedure nanofibrillated cellulose from recycled paper is obtained with similar features to the nanofibrillated cellulose obtained from virgin cellulose. | 11-07-2013 |
20130312922 | POLYESTER SURFACTANTS FOR DEINKING - The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking. 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 concentration values. | 11-28-2013 |
20140238625 | RECORDING MEDIUM - A recording medium includes a substrate, and a deinking agent incorporated in the substrate, on the substrate in a layer, or both in the substrate and on the substrate in a layer. The deinking agent is chosen from an unsaturated fatty acid having from 19 to 23 carbon atoms and combinations of these unsaturated fatty acids. The deinking agent interacts with an ink having been printed on the recording medium to remove the ink during a deinking process. | 08-28-2014 |
20140290881 | METHOD FOR REDUCING NEGATIVE EFFECTS OF ADHESIVE CONTAMINANTS IN SYSTEMS OF SUBTANCES COMPRISING WASTE PAPER - The invention relates to a method for reducing the negative effects of adhesive contaminants in the processing of waste paper, wherein an aqueous polymer dispersion comprising one component A and one component B for coagulation and detackification of stickies is added during the processing of waste paper, wherein component A is a homo- and/or copolymer of methyl methacrylate, acrylate and/or styrene and component B is a styrene copolymer having acrylic acid, maleimide and/or maleic acid hydride. The polymer dispersion can optionally comprise another component C, a cationic fixing agent that supports the coagulation of the stickies. | 10-02-2014 |
20150053358 | Methods To Control Organic Contaminants In Fibers Using Zeolites - 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. | 02-26-2015 |
20150068693 | Composition of Fibrous Material - 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. | 03-12-2015 |
20150136343 | Enzymatic Treatment of Virgin Fiber and Recycled Paper to Reduce Residual Mineral Oil Levels for Paper Production - Compositions comprising enzyme compositions are provided. Also provided are methods of treating virgin fiber and recycled wastepaper containing mineral oils using the compositions comprising enzyme compositions. The mineral oils generally originate from wastepapers with mineral oil based inks and certain other hydrocarbon-based chemistries used during the manufacturing, paperboard converting, and packaging process. The enzymes break down or modify mineral oils present in the fiber and paper, mobilize and liberate them from the fibers, and increase removal of mineral oils during paper recycling, pulping and papermaking processes. The method results in the break down or modification of mineral oil components in wastepaper, recycled pulp, and paper products by the enzyme compositions so that the mineral oils can be more efficiently detached and removed. The resulting pulp and paper has much reduced mineral oil concentration or less problematic forms of mineral oils and is beneficial for making food packaging paper products. | 05-21-2015 |
20150322629 | PITCH INHIBITOR, PITCH INHIBITION METHOD, AND PROCESS FOR PRODUCING DEINKED PULP - Provided are a pitch-formation suppressor and the like which can be widely applied independently of the substance that causes a pitch and of the situation to generate a pitch in a paper manufacturing process, and which can effectively suppress and prevent the troubles due to the pitch, such as foreign spots and defects in a paper, breakage of a paper, and lowering of workability. This pitch-formation suppressor comprises an alkaline solution in which a phenol resin and/or a modified phenol resin is dissolved, or an acid solution in which a phenol resin and/or a modified phenol resin is dissolved. | 11-12-2015 |
20180023250 | METHODS OF OPTICAL BRIGHTENING AGENT REMOVAL | 01-25-2018 |
162006000 | With chlorine, chlorine compounds, oxygen, ozone, or per-compounds | 1 |
20090050281 | SANITARY SHEETS MADE OF WASTE PAPER AND A PROCESS OF PREPARING SANITARY SHEET FROM WASTE PAPER - This invention relates to an improved smudge free sanitary sheet made of waste paper and a process of preparing the same through processing the surplus newsprint and more precisely processing used/recycled paper. The sanitary sheets are prepared by the process steps of collecting pre-consumer overprint or post consumer read newspapers; grading the collected waste newspaper; drying and sterilizing the graded newspaper by applying ultraviolet, infrared and/or gamma rays; trimming and cutting the dried sterilized sheets in appropriate sizes; applying on at least one of the sides of the waste newspaper an aqueous coating comprising of a mixture of resin such as bleached shellac, a dye, a germicide such as Benzaikonium Chloride (BC) and/or PCMX (Chloroxylenol), a safe colour, a known deodorant and optionally cosmetic chemicals such as emollient and a foaming agent such as a detergent. The improved sanitary sheets prepaid by the present cost effective invention has taken care of any toxic effect on human skin to make those hygenic and aesthetic and the discarded sheets being biodegradable, the present invention is environment friendly. The sanitary sheets from present invention has various wide applications such as a single use barrier in outpatient beds of clinics or on x-ray tables, safe paper bags for carrying dry stuff, a mat on a publicly used seat like gyrn, safe pet care, paper towel, toilet paper, sanitary napkin, child diapers, adult incontinence products etc. | 02-26-2009 |