EP0648288B1 - Verfahren zur herstellung von tissue-papier, insbesondere mehrschichtigem tissue papier, mit verminderter wechselwirkung zwischen den fasern - Google Patents

Verfahren zur herstellung von tissue-papier, insbesondere mehrschichtigem tissue papier, mit verminderter wechselwirkung zwischen den fasern Download PDF

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Publication number
EP0648288B1
EP0648288B1 EP93914804A EP93914804A EP0648288B1 EP 0648288 B1 EP0648288 B1 EP 0648288B1 EP 93914804 A EP93914804 A EP 93914804A EP 93914804 A EP93914804 A EP 93914804A EP 0648288 B1 EP0648288 B1 EP 0648288B1
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EP
European Patent Office
Prior art keywords
sheet
tissue paper
product
polycationic
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
EP93914804A
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English (en)
French (fr)
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EP0648288A1 (de
Inventor
Claude Lesas
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Essity Operations France SAS
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Individual
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Publication date
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Publication of EP0648288A1 publication Critical patent/EP0648288A1/de
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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
    • D21H21/14—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 characterised by function or properties in or on the paper
    • D21H21/22—Agents rendering paper porous, absorbent or bulky
    • D21H21/24—Surfactants
    • 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
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/09—Sulfur-containing compounds
    • 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
    • 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
    • D21H21/14—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 characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D21H21/20—Wet strength agents

Definitions

  • the present invention relates to a new process for preparing a sheet of tissue paper in a foam medium, the interaction between fibers in the tissue paper obtained being reduced, and in particular the manufacture of multi-layered tissue paper.
  • Tissues or crepe papers based on cellulose wadding find many applications in the household or domestic field. Depending on the intended applications, it is sought to control their mechanical properties, in particular their resistance, their feel to improve in particular their softness, their absorbent nature or their bulk.
  • the patents FR-A-2123123 and US-A-3755220 describe a process for the manufacture of tissue paper sheets consisting of incorporating both a wet resistant additive, for example of the cationic type or associated with an adjuvant of the cationic deposit, and a additive with a debonding effect consisting, for example, of an anionic surfactant in order to obtain an acceptable resistance while improving the softness of the paper.
  • a wet resistant additive for example of the cationic type or associated with an adjuvant of the cationic deposit
  • a additive with a debonding effect consisting, for example, of an anionic surfactant in order to obtain an acceptable resistance while improving the softness of the paper.
  • a particularly advantageous improvement of this type of process with a view to improving the homogeneity of the dispersion of the fibers consists in using as foam an aqueous medium obtained by the introduction of foamable surfactants, soluble in water, and in carrying out the dispersion of the fibers. within this foam.
  • foam processes are in particular described in US-A-4443297. This document also indicates that resins and debonding products can be added if necessary.
  • An alpha-olefin sulfonate is used as a foamable surfactant.
  • the sheets of crepe paper are prepared in machines of the FOURDRINIER type, for example or double cloth or other, from cellulose fibers previously dispersed in an aqueous medium and distributed on a cloth where the pulp is drained and then dried between rollers.
  • the sheet after having been dried by passage in a hot air hood, is then creped then calendered. It has been observed that the step of passing through the hot air hood induces on the face of the sheet located on the hood side a certain roughness effect which is contrary to the generally desired softness effect.
  • the present invention by offering a general solution for reducing the bonds between the fibers, makes it possible to provide a particular solution to the problem indicated above by providing a means of obtaining a sheet whose fluffy effect on the surface is increased due to of the reduction in the bonds between the fibers in this zone.
  • the present invention provides a means which can be used in particular to improve the smoothness of the surface layer of a multi-layer paper such that it can, for example, be prepared using a paper machine with a known multi-jet head box. in itself.
  • the present invention provides a solution to the problems in which it is sought to provide a gain in softness either to the entire sheet or to one of its layers.
  • the invention relates to a process for preparing a sheet of tissue paper using a wet papermaking technique, comprising a step of dispersing the papermaking fibers in a medium consisting of a foam resulting from the dispersion fine air bubbles in a foaming medium containing water and an anionic surfactant with foaming effect characterized in that said fibers are first treated with a polycationic product so as to form fiber / polycationic product / surfactant bridges and obtain an unbinding effect between the fibers of the tissue paper sheet thus obtained.
  • Foam One such method in which the surfactant is used to generate a foam by absorbing air in the aqueous mixture will be referred to as a "foam" method.
  • the polycationic products useful according to the invention are advantageously nitrogen-based polymer compounds generally used in the prior art to improve the wet or dry resistance of the paper, or the retention of the fibers in the paper machine.
  • polycationic products which are useful according to the invention, mention will be made of commercial products such as, for example, the product marketed under the brand name KYMENE which is a reaction product of epichlorohydrin with a condensing polyamine obtained from adipic acid and di-ethylene-triamine and where the cationic sites are formed by conversion of the secondary amine into quaternary ammonium by alkylation of the epichlorohydrin.
  • KYMENE is a reaction product of epichlorohydrin with a condensing polyamine obtained from adipic acid and di-ethylene-triamine and where the cationic sites are formed by conversion of the secondary amine into quaternary ammonium by alkylation of the epichlorohydrin.
  • This product well known to those skilled in the art, is generally used as an additive intended to increase the characteristics of dry and wet resistance. Mention may also be made of the products sold under the trade mark CYPRO which are products of the reaction of epichlorohydrin on dimethylamine. We also
  • polycationic products will be used in proportions such that a part of their positive sites is fixed on the negative sites carried by the cellulose fibers during the first stage of the process while the other part of these sites remains available to react during of the step of dispersing the fibers with the negative sites carried by the anionic surfactant contained in the aqueous dispersion medium thus leading to bridging between the fiber and the surfactant.
  • foaming anionic surfactant any anionic surfactant known to those skilled in the art can be used.
  • anionic surfactants with a foaming effect mention will be made of sulfonates, sulfates, carboxylates and phosphates.
  • Surfactants containing an aliphatic long hydrocarbon chain, for example a C 10 -C 18 chain will advantageously be chosen.
  • the process according to the invention is applicable to all types of cellulose fibers conventionally used for the preparation of tissue paper. We could in particular apply it to unrefined than refined pasta.
  • the amount of polycationic product used for the pretreatment of the fibers is determined according to the number of negative sites available on the cellulose and the more or less large unbinding effect sought.
  • the invention relates to a process, as just explained, within the framework of a process making it possible to obtain a multi-layered sheet, and more particularly its use for obtaining qualities. improved feel of one of the outer layers of such a product.
  • the Applicant has observed that, in traditional systems for preparing paper sheets, the step of creping the sheet at the outlet of the drying hood induces a certain roughness on the face situated on the hood side of the sheet.
  • the Applicant has now discovered that by using a method for producing a multi-layer sheet and by implementing the method according to the invention as described above for the production of the layer located on the face located on the hood side of said sheet, one could compensate for the unpleasant effect observed on the hood side face and in particular create the downy character of touch generally sought.
  • the surfactant is chosen from the repellent anionic surfactants allowing the implementation of a process, of the "foam process" type.
  • the pretreatment of the fibers was carried out with a polycationic product of the quaternary polyamine type sold under the brand CYPRO by AMERICAN CYANAMID.
  • This product is known from the prior art as a promoter used when it is desired to make bridges between cellulose and anionic materials; it is not known to have been used for the purpose of modifying the resistance properties, both wet and dry.
  • the anionic surfactant chosen in the examples is an alpha-olefin sulfonate.
  • Tables III and III 'below bring together the results observed concerning the lowering of the breaking strength of different sheets of tissue paper obtained from different types of softwood or unrefined hardwood fibers (Table III) or pulp of refined softwood (Table III ').
  • the quantity of polycationic product is to be added as a function of the anionic sites available on the cellulose. If the paste has a high calcium demand, like the birch paste used, the unbinding effect increases with the dose of reagent.
  • the softwood pulp used has a fairly low calcium demand, so there are few sites available. These sites are already saturated with 1 kg / t of CYPRO and may be less (Table III). When this paste is refined, new anionic sites are generated on the cellulose, which explains the additional deliant effect noted with 3 kg per ton (Table III ').
  • 25 g / m 2 formulas were prepared as before on a FRANCK type apparatus, with different unrefined hardwood pulps; these pastes are sold under the brands ALIZAY, KOTLAS, OSTRAND, TOFTE, respectively.
  • the purpose of the test is to compare the results obtained with two polycationic agents: KYMENE, CYPRO, with those obtained with a cellulose unbinding agent of the prior art: a quaternary amine sold under the brand BEROL 595.
  • the products are added in an amount of 1, 3, 5, 10, 20 Kg / T, counted as a commercial product, on paste suspended in a water medium to which 200 ppm of anionic surfactant are then added.
  • KYMENE gives its maximum effect at 5 kg / T, then the resistances are constant.
  • CYPRO gives its maximum effect at 3 kg / T then the resistance is constant.
  • Berol gives its maximum effect at 10 kg / t but the inflection zone of the curve representing the decrease in resistance as a function of the quantity of product is around 3 kg / T.
  • CYPRO has a very powerful effect on resistance from the addition of 1 kg / T. At 2.5 kg / T, its effect is identical to that of the debonding agent of the prior art, BEROL.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Claims (8)

  1. Verfahren zur Herstellung eines Blattes Tissue-Papier nach einer Technik der Papierherstellung auf feuchtem Wege, mit einem Schritt der Verteilung von Papierfasern in einem Medium, das von einem Schaum gebildet ist, der aus der feinen Verteilung von Luftbläschen in einem schäumenden Medium resultiert, welches Wasser und ein anionisches, grenzflächenaktives Mittel mit schäumender Wirkung enthält, dadurch gekennzeichnet, daß die Fasern zuvor mit einem polykationischen Produkt behandelt worden sind, so daß Brückenbildungen Faser/polykationisches Produkt/grenzflächenaktives Mittel geschaffen werden und ein losbindender Effekt zwischen den Fasern des so erhaltenen Blattes Tissue-Papier erhalten wird.
  2. Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, daß das polykationische Produkt ein Polymerprodukt auf Stickstoffbasis von einem allgemein gebrauchten Typ ist, um den feuchten oder trockenen Widerstand des Papiers oder den Rückhalt der Fasern auf der Papiermaschine zu verbessern.
  3. Verfahren gemäß Anspruch 2, dadurch gekennzeichnet, daß das polykationische Produkt ein quaternäres Polyamin ist.
  4. Verfahren gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das grenzflächenaktive Produkt ein Alpha-Olefinsulfonat ist.
  5. Verfahren gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das polykationische Produkt ein quaternäres Polyamin und das grenzflächenaktive Produkt ein Alpha-Olefinsulfonat ist.
  6. Verfahren zum Mehrstrahl-Herstellen eines mehrschichtigen Blattes Tissue-Papier, dadurch gekennzeichnet, daß zumindest eine der Schichten imstande ist, nach einem Verfahren gemäß der Ansprüche 1 bis 5 erhalten zu werden.
  7. Blatt von mehrschichtigem Tissue-Papier, das aus einem Mehrstrahlverfahren hervorgegangen ist, dadurch gekennzeichnet, daß zumindest eine der Schichten imstande ist, aus einem Verfahren gemäß Anspruch 6 hervorgegangen zu sein.
  8. Blatt gemäß Anspruch 7, dadurch gekennzeichnet, daß die Schicht, die während des Trocknungsvorganges auf der Seite eines Abzuges angeordnet ist, zuvor durch ein polykationisches Produkt behandelte Fasern enthält.
EP93914804A 1992-07-03 1993-07-02 Verfahren zur herstellung von tissue-papier, insbesondere mehrschichtigem tissue papier, mit verminderter wechselwirkung zwischen den fasern Expired - Lifetime EP0648288B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9208233 1992-07-03
FR9208233A FR2693213B1 (fr) 1992-07-03 1992-07-03 Procede destine a diminuer l'interaction entre fibres dans un tissue et mise en óoeuvre de ce procede, notamment pour fabriquer des tissues multi-strates.
PCT/FR1993/000679 WO1994001620A1 (fr) 1992-07-03 1993-07-02 Procede destine a diminuer l'interaction entre fibres dans un tissu et mise en ×uvre de ce procede, notamment pour fabriquer des tissus multi-strates

Publications (2)

Publication Number Publication Date
EP0648288A1 EP0648288A1 (de) 1995-04-19
EP0648288B1 true EP0648288B1 (de) 1997-08-27

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EP93914804A Expired - Lifetime EP0648288B1 (de) 1992-07-03 1993-07-02 Verfahren zur herstellung von tissue-papier, insbesondere mehrschichtigem tissue papier, mit verminderter wechselwirkung zwischen den fasern

Country Status (4)

Country Link
EP (1) EP0648288B1 (de)
ES (1) ES2108283T3 (de)
FR (1) FR2693213B1 (de)
WO (1) WO1994001620A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI107951B (fi) * 1999-12-08 2001-10-31 Dynea Chemicals Oy Vaahtoavat kuitumateriaalin lujuuteen vaikuttavat koostumukset
EP1909206A1 (de) 2006-09-11 2008-04-09 Roche Diagnostics GmbH Messbereichserweiterung chromatografischer Schnellteste

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6505960A (de) * 1964-06-02 1965-12-03
US3409500A (en) * 1966-10-28 1968-11-05 American Cyanamid Co Method of sizing paper with cationic polyamine and carboxylic anhydride
CA944906A (en) * 1971-01-21 1974-04-09 Frederick W. Meisel (Jr.) Preparation of cellulosic sheet material having improved softness
US4443297A (en) * 1980-08-18 1984-04-17 James River-Dixie/Northern, Inc. Apparatus and method for the manufacture of a non-woven fibrous web
US4447294A (en) * 1981-12-30 1984-05-08 The Procter & Gamble Company Process for making absorbent tissue paper with high wet strength and low dry strength
US4548649A (en) * 1983-11-23 1985-10-22 Westvaco Corporation Foaming agent
US4920171A (en) * 1987-02-24 1990-04-24 Monadnock Paper Mills, Inc. Water-resistant, water-flushable paper compositions

Also Published As

Publication number Publication date
EP0648288A1 (de) 1995-04-19
FR2693213A1 (fr) 1994-01-07
WO1994001620A1 (fr) 1994-01-20
FR2693213B1 (fr) 1994-08-05
ES2108283T3 (es) 1997-12-16

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