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| Number | Title | Issue Date |
| 7407561 | Use of water-soluble crosslinked cationic polymers for controlling deposition of pitch and stickies in papermaking The present invention relates to a method for controlling pitch and stickies deposit in a pulp and papermaking process using crosslinked cationic polymers made by controlled addition of a water soluble radical initiator at reaction temperature with agitation for cha... | 08/05/2008 |
| 7407563 | Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent An apparatus in the treatment of stock passed to a headbox of a paper machine or equivalent includes at least two stock chests (10a1, 10a2). Stock (M1) from a first stock chest (10a1 | 08/05/2008 |
| 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 |
| 7238752 | High molecular weight cationic polymers obtained by post-polymerization crosslinking reaction The molecular weight of cationic polymers, such as diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature with agitation to prepare high molecular weight, crosslinked, water-... | 07/03/2007 |
| 7205369 | High molecular weight cationic polymers obtained by post-polymerization crosslinking reaction The molecular weight of cationic polymers, such as diallyldialkyl ammonium chloride, can be increased by controlled addition of a water-soluble radical initiator at an elevated reaction temperature with agitation to prepare high molecular weight, crosslinked, water-... | 04/17/2007 |
| 7117775 | Method and apparatus for transferring a paper web A method of, and apparatus for, transferring a web, in particular a paper web or cardboard web or an insertion tail severed from the web, from a web-discharging web-guiding surface, via a web conveying apparatus, to the next structural unit of a machine for producin... | 10/10/2006 |
| 7089839 | Method and apparatus for transferring a paper web A method of, and apparatus for, transferring a web, in particular a paper web or cardboard web or an insertion tail severed from the web, from a web-discharging web-guiding surface, via a web conveying apparatus, to the next structural unit of a machine for producin... | 08/15/2006 |
| 7056420 | Method in leading a web threading tail particularly in a paper machine The invention relates to a method in leading a web threading tail particularly in a paper machine. In the method a device is used, which is moved close to a fabric transporting the web threading tail and by means of which the web threading tail is detached from the ... | 06/06/2006 |
| 7001487 | Method and apparatus for transporting a sheet from a dryer to a reel A system and method for transferring a continuously advancing paper web from a dryer to a reel section is provided. The system includes a first fabric defining a first moving conveyor. The first fabric may be a permeable fabric, which is positioned downstream from t... | 02/21/2006 |
| 6918996 | Method and apparatus in ropeless tail threading in a multi-roll calender A method and apparatus in ropeless tail threading in a multi-roll calender is disclosed wherein the threading tail is guided through the multi-roll calender in such a way that, before the multi-roll calender, the threading tail is guided first of all to the broke pr... | 07/19/2005 |
| 6835282 | Paper web with pre-flocculated filler incorporated therein Disclosed is a process for preparing a paper web. The paper web is prepared from a low-grade furnish, which contains low-grade pulps, such as recycled pulp and/or groundwood pulp, and which, in one preferred embodiment, is a newsprint furnish. In accordance with the... | 12/28/2004 |
| 6740200 | Methods and system for manufacturing and finishing web products at high speed without reeling and unwinding A method for directly forming and finishing a web product is provided. The method includes forming a web on a forming apparatus, continuously transferring the formed web to a conveyor, performing a converting step on the web as the web is continuously supported and ... | 05/25/2004 |
| 6709550 | Method for forming a multi-layered paper web A multi-layered paper web that has increased strength for minimizing slough and lint is provided. In one embodiment, the paper web contains an outer layer formed from unrefined hardwood fibers and an inner layer formed from refined hardwood, softwood, and machine br... | 03/23/2004 |
| 6605184 | Method and apparatus for treatment of fiber suspension containing minerals, such as coated broke, in paper production A method and apparatus treat fiber based material so as to reduce the loss of mineral fractions in the treatment of broke in paper production. Broke is a reusable raw material from a paper machine that contains mineral fractions which are desirably return... | 08/12/2003 |
| 6602389 | Process for treating a fibrous slurry of coated broke Disclosed is a process for preparing a paper web. The paper web is prepared from a low-grade furnish, which contains low-grade pulps, such as recycled pulp and/or groundwood pulp, and which, in one preferred embodiment, is a newsprint furnish. In accordan... | 08/05/2003 |
| 6576088 | Process for preparing dry broke Process for preparing dry broke in one of a paper, cardboard or coating machine. The process includes diluting the dry broke to a consistency of between about 15 to 60%, and slushing the dry broke with shear forces sufficient to crush filler particles in ... | 06/10/2003 |
| 6548427 | Sanitary tissue products with improved flushability The present invention is generally directed to a tissue product with improved flushability. Specifically, the incorporation of both a temporary wet strength agent and an alkaline reagent into the tissue product results in the tissue product having high in... | 04/15/2003 |
| 6517680 | Method in connection with the production of paper or cardboard Method for manufacturing paper or cardboard in one or more plies in order to achieve a paper or cardboard product with an even quality. The method comprises determining a fiber composition of a broke paper or cardboard waste broke, fractionating the broke... | 02/11/2003 |
| 6464830 | Method for forming a multi-layered paper web A multi-layered paper web that has increased strength for minimizing slough and lint is provided. In one embodiment, the paper web contains an outer layer formed from unrefined hardwood fibers and an inner layer formed from refined hardwood, softwood, and... | 10/15/2002 |
| 6441240 | Method for inhibiting the deposition of white pitch in paper production Ethyleneamine compound(s), or mixtures thereof, are used in effective amounts to reduce or inhibit the deposition of white pitch on the paper making equipment during the processing to recycle coated paper.... | 08/27/2002 |
| 6419787 | Process for recycling paper broke containing wet strength additives The present invention is generally directed to a process for recycling paper containing wet strength additives. The process generally includes the step of mechanically fiberizing the paper in order to reduce the paper into substantially discreet fibers. T... | 07/16/2002 |
| 6358367 | Pulping system for a paper machine A paper machine includes a traveling belt for carrying a fiber web, and a cutting device disposed below the belt for cutting the fiber web into smaller pieces. The cutting device has an inlet and an outlet. A guiding device guides the fiber web from the b... | 03/19/2002 |
| 6273999 | Method of optimizing the metering of charge-reversal agent into paper broke The method of optimizing the metering of charge-reversal agent into broke in the form of a suspension of fibers from paper treated in a coating machine and to be reintroduced into the production line, is distinguished by the fact that a partial stream is ... | 08/14/2001 |
| 6261415 | Paper machine A paper machine and web control system for the same to be activated on web rupture, which paper machine has a double-felted press nip and a treatment unit for increasing the dry solids content of the web downstream of the press nip, the web being transfer... | 07/17/2001 |
| 6245874 | Process for making repulpable wet and dry strength paper A process for making paper with increased wet and dry strength by incorporating into the pulp suspension an ionic thermosettable resin which is the reaction product of dialdehyde and epihalohydrin, or epihalohydrin equivalent, with a copolymer containing ... | 06/12/2001 |
| 6241849 | Methods for deinking and decolorizing printed paper The present invention relates to methods for deinking and decolorizing a printed paper, comprising: (a) pulping the printed paper to obtain a pulp slurry; (b) dislodging an ink from the pulp slurry with one or more enzymes; (c) decolorizing the dye contai... | 06/05/2001 |
| 6241848 | Method for processing recycled waste paper for integrated packaging A single plant for making corrugated sheets out of recycled paper and a method for making the same. The plant includes a recycling pulper a board machine and a corrugator.... | 06/05/2001 |
| 6153049 | Method for inhibiting the deposition of white pitch in paper production using ethylene amine compound Ethyleneamine compound(s), or mixtures thereof, are used in effective amounts to reduce or inhibit the deposition of white pitch on the paper making equipment during the processing to recycle coated paper.... | 11/28/2000 |
| 6096167 | Process of manufacturing a colored fiber material Process for the manufacture of a colored fibre material, containing a certain proportion of cellulose fibres, such as paper and nonwoven. A dyestuff is applied onto reel or sheet pulp either on the whole material or only on part of it, whereupon the reel ... | 08/01/2000 |
| 6086714 | Process for adjusting the alkalinity of pulp slurry in a broke pulper using carbon dioxide A method for adjusting the alkalinity of a pulp slurry in a broke pulper, and more particularly, to adjusting the pH of the pulp slurry using carbon dioxide.... | 07/11/2000 |
| 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 |
| 5989392 | Method of using polyammonium quaternary for controlling anionic trash and pitch deposition in pulp containing broke A method is disclosed for controlling anionic trash and pitch deposition and treating coated broke which comprises the step of adding a polyammonium quaternary to a pulp and papermaking system. The polyammonium quaternary, which may be either branched or ... | 11/23/1999 |
| 5925218 | Rehydration of once-dried fiber This invention relates to the rehydration of once-dried fiber for use in a papermaking furnish. Such a rehydration of this type, generally, employs temperature, pressure and refining to make the once-dried fiber behave more like a virgin fiber. Thus, high... | 07/20/1999 |
| 5904808 | Processes and compositions for repulping wet strength paper and paper products A process of repulping paper a product comprising cellulose fibers, comprising forming an aqueous suspension of paper product to be repulped and an oxidizing agent comprising at least one persulfate salt, and maintaining the pH of the aqueous suspension i... | 05/18/1999 |
| 5891304 | Use of hydrophilic dispersion polymers for coated broke treatment A process for treating recycled coated broke which has been re-pulped to a slurry for the purpose of recycling the coated broke as cellulose fiber to the paper machine by the addition of a water-soluble polymer dispersion is claimed. The water-soluble pol... | 04/06/1999 |
| 5888350 | Method for repulping and/or decolorizing broke using persulfate/metal mixtures Repulping and/or decolorizing formulations and mixtures which include a catalytic amount of a salt of a metal such as copper, iron, silver, or nickel; a persulfate; and from 0-10% saccharide. Formulations containing a carbonate, sesquicarbonate or bicarbo... | 03/30/1999 |
| 5837100 | Use of blends of dispersion polymers and coagulants for coated broke treatment An improved papermaking process comprising forming an aqueous coated broke papermaking slurry and adding a blend of a water-soluble dispersion polymer and a coagulant to the slurry to increase retention and/or drainage is disclosed. After addition of the ... | 11/17/1998 |
| 5785814 | Spool butt unwind system The invention is an apparatus and method for unwinding the butt portion of a reel of paper from the reel spool and delivering it to a repulper. It consists of a floor mounted stand with appropriate cradling surfaces to hold the spool butt. An air jet mani... | 07/28/1998 |
| 5759350 | Papermaking process dry end slabbing method A papermaking process dry end slabbing method using high pressure fluid cutting moves generally parallel to a spool at the end of the papermaking process. The process removes multiple layers of unwanted paper which may be of the wrong grade, poor quality,... | 06/02/1998 |
| 5730371 | Delumper A device and a process for delumping pasty masses in waste materials from paper manufacture. The delumping means employs at least one rotating cylindrical drum having a plurality of flexible fingers mounted on the drum. Pasty masses are supplied to the de... | 03/24/1998 |
