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| Number | Title | Issue Date |
| 8133351 | 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. ... | 03/13/2012 |
| 8133350 | 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. ... | 03/13/2012 |
| 7897010 | Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles 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, re... | 03/01/2011 |
| 7862685 | Method for deinking pulp using premixed hydrophobically modified calcium carbonate particles 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, re... | 01/04/2011 |
| 7364642 | Recycling of latex-containing broke Methods for recycling latex-containing broke are generally provided. Specifically, mechanical treatment may be employed to rework latex-containing broke for reuse in various products without the need for treatment with chemicals, such as hypochlorite, chlorine, or h... | 04/29/2008 |
| 7279073 | Apparatus for liquid-based fiber separation An apparatus for treating fibrous material is disclosed. The apparatus may include a fiber separator, a de-liquefier, a dry-to-wet blender and a flash dryer. The fiber separator may be a liquid-based fiber separator. The de-liquefier is for removing liquid from the ... | 10/09/2007 |
| 7204260 | Apparatus for cleaning polymeric pieces A cleaning apparatus capable of sufficiently removing foreign matters such as coating or labels from surfaces of crushed pieces of the collected polymeric mold product is provided. The cleaning apparatus includes a cleaning bath provided with a rotary shaft extendin... | 04/17/2007 |
| 7101832 | Cleaners containing peroxide bleaching agents for cleaning paper making equipment and method A cleaning solution for paper making equipment includes a stabilized source of peroxide in combination with a glycol ether solvent system and an alcohol ethoxylate. The peroxide system can be hydrogen peroxide stabilized with a phosphonate such as HEDP. The glycol s... | 09/05/2006 |
| 7033428 | Acid stabilized calcium carbonate an method of making it The present invention relates to an acid-stabilized calcium carbonate slurry having a pH of less than 7, preferably between about 6 and about 7, containing water, calcium carbonate, preferably precipitated calcium carbonate, and an acid-stabilizer of a water soluble... | 04/25/2006 |
| 6899790 | Method of providing papermaking fibers with durable curl A process for producing high bulk cellulosic fiber exhibiting a durable elevated curl index includes: (a) concurrently heat treating and convolving cellulosic fiber pulp at elevated temperature and pressure at high consistency under conditions selected so as to prec... | 05/31/2005 |
| 6656324 | Method for removing wax from a pulp furnish A method for removing wax from a pulp furnish is disclosed. The method is effective for removing wax from a pulp furnish containing waxed old corrugated containers (OCC). In the method, the pulp furnish containing waxed OCC is treated with an agglomeratio... | 12/02/2003 |
| 6623599 | Process for producing a paper web having calcium carbonate filler by introducing carbon dioxide to the pulp A papermaking process wherein calcium carbonate is included in a pulp suspension. The dissolution of the calcium carbonate in the papermaking system is substantially retarded by the introduction of carbon dioxide to said pulp suspension. The invention als... | 09/23/2003 |
| 6540870 | Process for substantially retarding dissolution of calcium carbonate in a papermaking system The invention relates to papermaking processes wherein calcium carbonate is included in a pulp suspension. The dissolution of the calcium carbonate in the papermaking system is prevented or substantially retarded by the introduction of carbon dioxide to s... | 04/01/2003 |
| 6482292 | Styrene copolymers in de-inking Provided herein are compositions of matter useful in de-inking secondary fibers. A composition according to the invention includes an aqueous solution of an anionic form of a styrene-methacrylic acid copolymer. When a surfactant is used in combination wit... | 11/19/2002 |
| 6458240 | Method for removing contaminants from fibers in recycle fiber pulping An improved process for the separation of cellulosic fiber from difficult to process coated and inked paper products is disclosed and claimed. This process readily separates the paper pulp fraction substantially free of contaminants from such waste paper ... | 10/01/2002 |
| 6416620 | Method of repulping repulpable and recyclable moisture resistant coated articles A repulpable wax containing paper product consists essentially of a hot melt formulation with an effective amount of an inorganic mineral filler such as clay. The inorganic mineral filler is in an amount which permits the article coated with the hot melt-... | 07/09/2002 |
| 6391150 | Process for treating waste paper to form a spore-free base tissue The disclosure relates to a process for the treatment of old paper without the use of biocides and chlorine compounds as well as with the virtual avoidance of hydrogen peroxide and/or peracetic acid with a total germ count of less than 1000 CFU/g and/or a... | 05/21/2002 |
| 6387211 | Methods for reducing fluorescence in paper-containing samples The present invention provides methods for reducing fluorescence in a paper-containing sample. Methods for destroying fluorescent whitening agents in a paper-containing sample are also provided.... | 05/14/2002 |
| 6340407 | Process of making recycled linerboard or Kraft paper from old corrugated container A process for producing new corrugated containerboard from old corrugated container (OCC) without using expensive virgin UKP includes three new steps. These steps are separating corrugated medium from OCC before pulping linerboard, removing micro-fibrils ... | 01/22/2002 |
| 6336992 | Method and apparatus for wetting fibrous material A method and an apparatus for wetting fibrous material, such as coarsely shredded waste paper. Fibrous material and wetting fluid is introduced into a wetting enclosure. Pressure is decreased within the wetting enclosure for a short period of time for suc... | 01/08/2002 |
| 6312559 | Deinking process using amine compounds and white water recycling There is provided a deinking process carried out using white water according to which an excellent whiteness and an excellent areal ratio of residual ink fines can be secured while maintaining a proper pulp yield. In the deinking process comprising a flot... | 11/06/2001 |
| 6294047 | Methods for reducing fluorescence in paper-containing samples The present invention provides methods for reducing fluorescence in a paper-containing sample. Methods for destroying fluorescent whitening agents in a paper-containing sample are also provided.... | 09/25/2001 |
| 6273993 | Method of dispersing wax from a hot melt wax-coated paper The present invention relates generally to a hot melt wax coating composition containing at least one chemical compound which is either itself capable of acting as a latent dispersant for the coating or capable of being chemically modified so as to act as... | 08/14/2001 |
| 6254722 | Method for making dissolving pulp from paper products containing hardwood fibers A method for making dissolving pulp from cellulosic fiber. The fiber is treated with a 3-stage sequence having a first alkali extraction stage, a xylanase treatment stage, and a second alkali extraction stage. Having the xylanase treatment stage sandwiche... | 07/03/2001 |
| 6251220 | Wastepaper deinking method using amine or acid salt of amine in the flotation stage A deinking method comprising the steps of liberating ink from waste paper as a raw material and removing the liberated ink from a flotation system, wherein a nonionic surfactant, e.g., a reaction product obtained by adding an alkylene oxide to a mixture o... | 06/26/2001 |
| 6238516 | System and method for cleaning, processing, and recycling materials Washing machines are uiized to recycle plastic and cellulose from disposed diapers. The disposed diapers are loaded into a washing machine and, while being agitated, are washed in water, alkali and soap. During washing, the cellulose becomes separated fro... | 05/29/2001 |
| 6217706 | Method of de-inking paper and other cellulosic materials A method of de-inking cellulosic fibrous materials comprising: a. admixing an alkaline reagent selected from the group consisting of ammonium hydroxide and hydrogen peroxide and mixtures thereof with an aqueous suspension of inked cellulosic fibrous material s... | 04/17/2001 |
| 6210526 | Method for eliminating stickies from treatment of waste paper using hydrophobized minerals The invention relates to a method for inhibiting and eliminating adhesive impurities, so-called stickies, from waste paper preparations or paper pulp containing prepared waste paper in the paper industry by using classic sorting- and dispersion equipment ... | 04/03/2001 |
| 6200416 | Recycled paper production process which incorporates carbon dioxide A method for the manufacture of paper products includes the feeding of a carbon dioxide stream to a product flow which includes a material containing an aluminum compound. The material is preferably wastepaper containing aluminum sulfate or papermaker's a... | 03/13/2001 |
| 6187135 | Process for making recycled paper having improving strength properties A process for the manufacture of recycled paper having improved strength properties is achieved by replacing refiners by agitators, modifying extractor, applying effective amount of dispersion aids, and applying appropriate amount of dry strength additive... | 02/13/2001 |
| 6171440 | Process for repulping wet strength paper having cationic thermosetting resin Process for repulping paper comprising providing paper comprising thermosetting resin which is the reaction product of epihalohydrin and polyamide made from polyalkylene polyamine, succinic acid and optionally another dicarboxylic acid and repulping the p... | 01/09/2001 |
| 6159381 | Waste paper treatment process According to the present invention there is provided a method of treating reject from a plant for de-inking waste paper which reject comprises in an aqueous medium a mixture of suspended solids comprising at least ink particles, inorganic particles and fi... | 12/12/2000 |
| 6113738 | Use of additives to breakdown and stabilize wax during fiber recycle Methods for controlling wax and other contaminants by improving the dispersion of these materials through the addition of treatment agents such as plasticizers, dispersants or wetting agents to the process of recycling paper and paperboard are disclosed. ... | 09/05/2000 |
| 6017415 | Method for co-pulping waste cellulosic material and wood chips A method wherein waste cellulosic material is used as an alternative fiber source during chemical pulping to replace a fraction of the wood chips. The waste cellulosic material is fed to the digester along with wood chips. The waste cellulosic material ne... | 01/25/2000 |
| 6004428 | Process for fiber recovery from bonded fiber webs A process for dissolving a binder off a fiber web bonded therewith includes treating the fiber web, which is bonded with a polymeric binder having carboxylate groups crosslinked via alkaline earth metal cations, with an aqueous solution of an alkali metal... | 12/21/1999 |
| 5900111 | Process for sanitizing post-consumer paper fibers using heat and hydrogen peroxide The invention relates to a process for sanitizing post-consumer wastepaper fibers for liquid packages and containers, a paper product for food packaging and a liquid food container. The process comprises providing paper fibers from a wastepaper recycle pr... | 05/04/1999 |
| 5895556 | Waste paper treatment process A waste paper treatment process for the recycle and re-use of waste paper, which process comprises treating the waste paper, in a repulper, with a surfactant, in the absence of traditional repulper chemicals such as silicate, caustic and peroxide. The sur... | 04/20/1999 |
| 5882476 | Deinking printed wastepaper using alkaline solution containing sodium sulfite and sodium carbonate This invention is a method for deinking wastepaper by disintegrating the waste paper in an carbonate aqueous solution containing sodium sulfite and sodium carbonate to produce a fibrous slurry having a pH of at least 7.5, separating the ink from the fiber... | 03/16/1999 |
| 5880077 | Wastepaper reclaiming deinking agent The present invention is directed to a deinking agent with which a high-quality pulp sheet having a low Eric number can be obtained. The deinking agent for wastepaper reclamation comprises (a) an alkylene oxide adduct of an ester prepared from a dimer acid and... | 03/09/1999 |
| 5876559 | Deinking of impact and non-impact printed paper by an agglomeration process Deinking of impact and nonimpact printed paper is accomplished by repulping the printed paper in an alkali aqueous medium containing a deinking composition comprising one or more nonionic surfactants and/or alkanols. The presence of the deinking compositi... | 03/02/1999 |
