EP0910699B1 - Procede d'amelioration de papier d'impression - Google Patents

Procede d'amelioration de papier d'impression Download PDF

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Publication number
EP0910699B1
EP0910699B1 EP97932781A EP97932781A EP0910699B1 EP 0910699 B1 EP0910699 B1 EP 0910699B1 EP 97932781 A EP97932781 A EP 97932781A EP 97932781 A EP97932781 A EP 97932781A EP 0910699 B1 EP0910699 B1 EP 0910699B1
Authority
EP
European Patent Office
Prior art keywords
retention agent
additional retention
headbox
additional
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97932781A
Other languages
German (de)
English (en)
Other versions
EP0910699A1 (fr
Inventor
Hansjörg KESSLER
Dieter Horand
Wolfram Friesen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stora Enso Publication Paper GmbH and Co KG
Original Assignee
Stora Enso Publication Paper GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Stora Enso Publication Paper GmbH and Co KG filed Critical Stora Enso Publication Paper GmbH and Co KG
Publication of EP0910699A1 publication Critical patent/EP0910699A1/fr
Application granted granted Critical
Publication of EP0910699B1 publication Critical patent/EP0910699B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/76—Processes or apparatus for adding material to the pulp or to the paper characterised by choice of auxiliary compounds which are added separately from at least one other compound, e.g. to improve the incorporation of the latter or to obtain an enhanced combined effect
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • D21H17/29—Starch cationic
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/31—Gums
    • D21H17/32—Guar or other polygalactomannan gum
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
    • D21H17/56—Polyamines; Polyimines; Polyester-imides

Definitions

  • the invention relates to a method for Improvement of gravure and offset printability of coated and uncoated printing papers by increasing the proportion of filler in these Papers on the top and bottom or in the Outer layers of the paper web by using Retention agents.
  • SC and LWC roll printing papers For use in large print runs, the State of the art so-called SC and LWC roll printing papers used that the increased Pressure loss requirements. Under SC papers there are roll printing papers understood that up to 35% mineral Contain filler and by post-treatment in a super calender with high gloss and smoothness exhibit.
  • SC stands for "Supercalendered”.
  • LWC papers are understood Roll paper that weighs up to 15% contain mineral filler and inside or outside on both sides of the paper machine a pigmented surface coating, the Dash, are provided. These printing papers will be after painting also with one Supercalender for high gloss and Treated smoothness.
  • the abbreviation LWC stands here for "light weight coated”.
  • SC and LWC printing papers were initially on so-called Fourdrinier paper machines manufactured. These papers had the disadvantage of the so-called Bilateralism, d. H. through the one-sided Drainage on the strainer was at the bottom Washed out filler and fine material so that the Screen side of the paper always rougher than that The top was and the paper web, in the Z direction seen an uneven or crooked Ash cross profile had. different Filler or ash content, however, is conditional inevitably uneven pressure drop Top and screen side, so that such papers the no longer meet today's requirements.
  • Multi-layer printing papers formed by Multi-layer headbox and twin-wire former are in the German literature "Wochenblatt für Textilfabrikation", 1987, page 662 to 667. It also reveals that the filler distribution in the paper web in the outer layers by adding filler in the Outer channels of a multi-layer headbox can be influenced in a targeted manner.
  • US-A-5482595 describes a method for increasing the dewatering characteristic of a pulp in a papermaking operation using alum, ionic polyacrylamide and cationic starch. There is no reference to the use of filler in this document, much less to the use of additional retention agents to increase the amount of filler in the papers on the top and bottom by using retention agents.
  • DE-A-4436317 relates to a process for the production of paper, the retention of mineral fillers being improved by, inter alia, addition of an anionic water-soluble polymer flocculant followed by a water-soluble cationic copolymer flocculant with a high molecular weight ,
  • the outer layers of the stock suspension forming the paper web are additionally provided with retention aids.
  • DE-42 37 309 finally teaches a method for the production of a fibrous web, one Fibrous suspension with the help of a Headbox evenly on a sieve or is distributed between two sieves.
  • a Headbox evenly on a sieve or is distributed between two sieves.
  • Avoidance of fluctuations in Basis cross-sectional weight is the retention of Sectional fiber suspension on the sieve influenced by retention agents in the headbox is metered in sections.
  • the disadvantage of this method is that increased fine and filler content of the middle Layer the anchoring of the long fibers containing outer layer is deteriorated and there is a decrease in the Z strength.
  • the Paper tends to split if it is, such as B. at Offset printing, is loaded in the Z direction.
  • Retention agents in papermaking is has been known for a long time and enables good filling and Fiber retention on the sheet forming screen.
  • Such retention aids are generally before a mixing element, such as. B. the Headbox pump of the fiber suspension, added so that this before leaving the Spread the lip or nozzle of the headbox evenly the retention agent is mixed.
  • retention aids can be used differently strong cationic or anionic charge can be used.
  • strongly Loaded retention agents improve the Retention of fillers and fines, can however depending on the reaction time with the Form fiber pulp suspension large fiber flakes, which has a negative impact on the Have fiber formation in the paper sheet formed.
  • Fibrous suspension before the headbox with a first, for example cationic Provide retention aid and mix well.
  • anionic retention agent is then, but before the headbox the fiber suspension, added and mixed.
  • the oppositely charged retention agents react with each other and with the fiber, Fillers and fines of the stock suspension and contribute to a much better Total retention at.
  • additional retention aids compared to that in of the headbox Fibrous suspension already existing Retention agents have an opposite charge.
  • polyethyleneimines polyacrylamides
  • Epichlorohydrin resins Epichlorohydrin resins
  • polyvinylamines individually or in a mixture.
  • Cationic hydrocolloids are also useful used. These can be known from per se cationic starch or cationized guar consist. When using cationic starch or guar there is the additional possibility about the degree of cationation and the chain length the starch or guar the charge and To influence network formation.
  • this will be additional retention aids in a headbox with multi-layer device in the chamber for upper and Lower layer injected.
  • Another convenient method is that when using a twin wire former with gap device the additional retention agent in returning run of the upper and lower sieve the screen mesh is sprayed.
  • a headbox to carry out the inventive method points across Flow direction of the stock suspension Devices for uniform dosing of additional retention agent.
  • the device consists of Outlet nozzle in a line that is transverse to the Extends flow direction, arranged Bores, the inflow devices for the Have retention aids.
  • Another device especially for one Multi-layer headbox with three layers and with Step diffusers, is that upstream of the respective step diffusers of the top and lower layers of holes for injecting Retention means are arranged.

Landscapes

  • Paper (AREA)
  • Unwinding Webs (AREA)

Claims (11)

  1. Procédé pour améliorer l'aptitude à l'impression en héliogravure et à l'impression offset de papiers d'impression couchés ou non-couché, par augmentation de la teneur en charge de ces papiers sur la face supérieure et la face inférieure ou dans les couches externes de la bande de papier grâce à l'utilisation d'agents de rétention, caractérisé en ce que, avant ou pendant la formation de la feuille sur le tamis ou entre les tamis d'une machine à papier, les couches externes de la suspension de pâte formant la bande de papier sont pourvues en plus d'un agent de rétention.
  2. Procédé selon la revendication 1, caractérisé en ce que l'agent de rétention supplémentaire présente une charge positive élevée.
  3. Procédé selon la revendication 1, caractérisé en ce que l'agent de rétention supplémentaire présente une charge opposée à celle de l'agent de rétention déjà présent dans la suspension de pâte.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'agent de rétention supplémentaire est constitué de polyéthylèneimine et/ou de polyacrylamide et/ou de résine d'épichlorhydrine et/ou de polyvinylamine.
  5. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'agent de rétention supplémentaire, est constitué d'hydrocolloïdes cationiques.
  6. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'agent de rétention supplémentaire est constitué d'amidon cationique.
  7. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'agent de rétention supplémentaire est constitué de gomme guar cationique.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'agent de rétention supplémentaire est injecté par une arrivée de pâte située en aval du générateur de turbulence, sur la largeur du courant de suspension, dans la couche marginale supérieure et la couche marginale inférieure de ce dernier.
  9. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'agent de rétention supplémentaire est injecté dans la couche supérieure et la couche inférieure par une arrivée de pâte munie d'un dispositif à plusieurs couches.
  10. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que, dans le cas d'un dispositif de formage à double tamis, l'agent de rétention supplémentaire est pulvérisé sur le tissu du tamis, dans le compartiment de reflux du tamis supérieur et du tamis inférieur.
  11. Arrivée de pâte pour la réalisation du procédé selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'elle présente, transversalement par rapport à la direction d'écoulement de la suspension de pâte, des dispositifs pour l'addition dosée régulière de l'agent de rétention supplémentaire.
EP97932781A 1996-07-10 1997-07-08 Procede d'amelioration de papier d'impression Expired - Lifetime EP0910699B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19627669A DE19627669C2 (de) 1996-07-10 1996-07-10 Verfahren zur Verbesserung von Druckpapieren
DE19627669 1996-07-10
PCT/EP1997/003597 WO1998001622A1 (fr) 1996-07-10 1997-07-08 Procede d'amelioration de papier d'impression

Publications (2)

Publication Number Publication Date
EP0910699A1 EP0910699A1 (fr) 1999-04-28
EP0910699B1 true EP0910699B1 (fr) 2002-11-06

Family

ID=7799359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97932781A Expired - Lifetime EP0910699B1 (fr) 1996-07-10 1997-07-08 Procede d'amelioration de papier d'impression

Country Status (8)

Country Link
US (1) US6251223B1 (fr)
EP (1) EP0910699B1 (fr)
AT (1) ATE227375T1 (fr)
DE (2) DE19627669C2 (fr)
DK (1) DK0910699T3 (fr)
ES (1) ES2182105T3 (fr)
NO (1) NO324374B1 (fr)
WO (1) WO1998001622A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10021979A1 (de) 2000-05-05 2001-11-08 Voith Paper Patent Gmbh Verfahren sowie Vorrichtung zur Bildung einer mehrschichtigen und/oder mehrlagigen Faserstoffbahn
DE10233795A1 (de) * 2002-07-25 2004-02-12 Voith Paper Patent Gmbh Trockenpartie
US20040086737A1 (en) * 2002-11-01 2004-05-06 Yockey A. James Product packaging with improved printed paper and method of making the same
US20100122786A1 (en) * 2008-11-20 2010-05-20 Tommy Jacobson Application of retention, drainage, and formation (rdf) chemical aids after a headbox of a papermaking process

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3560334A (en) * 1965-09-27 1971-02-02 Mead Corp Apparatus for incorporating additive dispersions to wet webs of paper
FI75200B (fi) * 1986-07-04 1988-01-29 Valmet Oy Foerfarande vid pappersframstaellningsprocess foer foerbaettring av egenskaper hos papperet, saerskilt dess retention.
DE4237309A1 (fr) * 1992-11-05 1993-04-08 Voith Gmbh J M
DE4409415C5 (de) * 1994-03-18 2005-02-17 Voith Sulzer Papiermaschinen Gmbh Dosiervorrichtung für einen Stoffauflauf einer Papiermaschine
US5482595A (en) * 1994-03-22 1996-01-09 Betz Paperchem, Inc. Method for improving retention and drainage characteristics in alkaline papermaking
DE4436317C2 (de) * 1994-10-11 1998-10-29 Nalco Chemical Co Verfahren zur Verbesserung der Retention von Mineral-Füllstoffen und Cellulosefasern auf einem Cellulose-Faserbogen
DE19509522C2 (de) * 1995-03-20 1999-03-11 Voith Sulzer Papiermasch Gmbh Naßpartie einer Papiermaschine
US5560807A (en) * 1995-03-29 1996-10-01 Beloit Technologies, Inc. Headbox additive injection system

Also Published As

Publication number Publication date
NO324374B1 (no) 2007-10-01
NO990046L (no) 1999-01-06
US6251223B1 (en) 2001-06-26
DK0910699T3 (da) 2002-11-25
NO990046D0 (no) 1999-01-06
DE19627669A1 (de) 1998-01-15
ATE227375T1 (de) 2002-11-15
EP0910699A1 (fr) 1999-04-28
DE59708673D1 (de) 2002-12-12
WO1998001622A1 (fr) 1998-01-15
DE19627669C2 (de) 2001-03-01
ES2182105T3 (es) 2003-03-01

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