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WO1989002952A1 - Market paper pulp, process for making market paper pulp and use of such pulp in papermaking - Google Patents

Market paper pulp, process for making market paper pulp and use of such pulp in papermaking Download PDF

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Publication number
WO1989002952A1
WO1989002952A1 PCT/SE1988/000466 SE8800466W WO8902952A1 WO 1989002952 A1 WO1989002952 A1 WO 1989002952A1 SE 8800466 W SE8800466 W SE 8800466W WO 8902952 A1 WO8902952 A1 WO 8902952A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
pulp
fibres
coloured
paper pulp
Prior art date
Application number
PCT/SE1988/000466
Other languages
French (fr)
Inventor
Conny Sverin
Jörgen STRÖMBERG
Original Assignee
Norrlands Skogsägares Cellulosa Ab
Swedish Match Ab
Holmens Bruk Ab
Air Laid Tissue A/S
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 Norrlands Skogsägares Cellulosa Ab, Swedish Match Ab, Holmens Bruk Ab, Air Laid Tissue A/S filed Critical Norrlands Skogsägares Cellulosa Ab
Publication of WO1989002952A1 publication Critical patent/WO1989002952A1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • 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
    • D21H21/28—Colorants ; Pigments or opacifying agents
    • 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
    • D21H23/765—Addition of all compounds to the pulp

Definitions

  • Cellulosic market paper pulp is manufactured by cooking a raw material of wood chips in suitable diges ⁇ tive chemicals with a view to removing the lignin of the wood and exposing its cellulosic fibres.
  • the woody raw material may be both softwood and hardwood, however in most cases being softwood, e.g. from pine and spruce.
  • the delignified fibres are washed to re ⁇ move dissolved organic substance and residual digestive chemicals by being abundantly diluted in water so as to form a suspension which is passed on to a suitable dewa- tering device, generally a fourdrinier wire on which the fibres are dewatered, whereupon they are finally dried, e.g.
  • the pulp is also bleached in a special bleaching step between cooking and drying, primarily in order to increase the bright ⁇ ness of the pulp. Such drying is conducted to dry so ⁇ lids contents considerably exceeding 80%.
  • the dry solids content of paper pulp in sheet or web form is about 90% and that of fluff pulp about 92-93%.
  • Dried paper pulp of the above generally described type is supplied to special paper mills where paper is manufactured (in some cases, there are also integrated manufacturing plants in which the pulp mill is integrat- ed with or directly connected to the paper mill. In these cases, the pulp is however not supplied in the dried state, but in a still water-suspended state from the pulp mill to the paper mill or paper machine).
  • papermaking is carried out in such a manner that the pulp, optionally together with one or more additional paper pulps, is slushed in water in a so- called machine vat so as to yield a stock which is processed in different ways, primarily by beating in a mill or a refiner, before it is distributed via a head box or the like onto a forming wire (alterna ⁇ tively, a cylinder or the like) on which a coherent web of fibres bonded together is formed as the water in the stock drains through the wire.
  • the web is there ⁇ after caused to pass a number of press rolls and a drying station in which it is dried so as to yield finished paper.
  • the paper requires colour ⁇ ing.
  • Stock colouring which is the commonest colouring method, is done by adding a colouring agent to the stock, always containing uncoloured pulp fibres, in a step somewhere between the slushing of the pulp in the machine vat and the forming on the wire, gene ⁇ rally as early as the machine vat, and fixing it to the fibres in a suitable manner.
  • Surface colouring is carried out by adding a dye solution to the formed paper web when it has passed the drying station, for instance in a size press located after the drying station.
  • Common agents for stock colouring are so ⁇ dium salts of organic sulphonic acids (C H ?
  • Dry-formed paper is manufactured basically in that the pulp supplied in sheet or web form (alternatively in fluff form) is shredded and finely divided, and incorporated in a flow of air which, like the stock, is caused to pass a form ⁇ ing wire on which a paper web of substantially uniform thickness is formed.
  • this technique requires the addition of special binders serving to bond the separate fibres together so as to form a coherent web.
  • the present invention primarily aims at creating conditions for allowing a simple and high-quality co- louring of dry-formed tissue paper and, to this end, relates to a dried market paper pulp manufactured from a raw material of wood chips, which pulp is character ⁇ ised in that the fibres therein are coloured by means of a colouring agent added to the fibres while they still are in a water suspension, but prior to final drying.
  • the invention further relates to a process for mak ⁇ ing market paper pulp, comprising the steps of cooking a raw material of wood chips for delignifying said raw material and exposing the cellulosic fibres therein, washing the thus exposed fibres by dilution in a water suspension and, after dewatering the fibres, drying them prior to sale.
  • Characteristic of the inventive process is that the fibres are coloured prior to the final drying, more particularly by adding a colouring agent in a manner known per se or in any optional man ⁇ ner to said fibre-water suspension, so as to produce a dried market pulp the individual fibres of which are coloured.
  • Colouring the pulp in accordance with the invention in connection with the very manufacture thereof gives the advantage not only that coloured paper can be manufactured by dry-forming without requiring any co ⁇ louring operation whatsoever in the paper mill or paper machine, but also that colouring can be carried out by conventional stock colouring technique, yielding a homo ⁇ geneous and durable colouring of the fibres.
  • Another major advantage of the invention is that it allows manu ⁇ facturing not only a dry-formed but also a wet-formed paper of veined structure.
  • the paper can be manufactured from two or more paper pulps at least one of which is coloured while the other is uncoloured or differently coloured.
  • the inventive pulp-making process can be carried out, for example in the manner appearing from the en ⁇ closed flow diagram.
  • a suspension of cellulosic fibres and water (pulp concentration of about 1%) is pumped to a first mixer 1 in which a hardening agent is added to adjust the hardness of the water to 5° dH.
  • a colouring agent supplied in a following mixer 2.
  • the colouring agent may be an azo dye, for instance of the type commercially available under the trade designation CARTASOL ROT, which is dosed in an amount of 5% by weight based on the amount of dry pulp.
  • the colouring agent After the addition of the colouring agent, this should have a residence time of about 5 minutes in a reaction vessel 3.
  • a fixing agent for instance a quarternary polyhydroxy- alkylene polyamine sold under the designation CARTAFIX FF, is dosed at 4 in order that the last dye residues should be added to the cellulose and also in order to obtain sufficient colour fastness.
  • the fibre suspension passes through a reaction vessel 5 in which the fibres supplied with fixing agent are allowed to remain for about one minute.
  • the cellulosic fibres are now coloured.
  • the defibering mills used in dry-forming plants require that the pulp be supplied with a debonding agent which reduces the fibre bonds when the cellulose is dried.
  • a cellulose as above can also be manufactured without any debonding agent but in that case, the defibering mill of the dry- forming plant must have a considerably increased capacity.
  • the colouring agent here discussed is added to the fibres most advantageously while they remain sus ⁇ pended in water at low concentrations, e.g. about 1%, it is conceivable to add the colouring agent also at higher pulp concentrations, e.g. even up to about 50%, which may prevail in press sections after the wire. The main point is that the addition of the colouring agent is carried out prior to the final drying.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

The invention relates to a dried market paper pulp manufactured from a raw material of wood chips, which is characterised in that the fibres therein are coloured by means of a colouring agent added to the fibres while they still are in a water suspension, but prior to final drying. The paper pulp is thereafter advantageously used for manufacturing high-quality, dry-formed tissue paper having a uniform colour.

Description

MARKET PAPER PULP, PROCESS FOR MAKING MARKET PAPER PULP AND USE OF SUCH PULP IN PAPERMAKING
Cellulosic market paper pulp is manufactured by cooking a raw material of wood chips in suitable diges¬ tive chemicals with a view to removing the lignin of the wood and exposing its cellulosic fibres. The woody raw material may be both softwood and hardwood, however in most cases being softwood, e.g. from pine and spruce. After cooking, the delignified fibres are washed to re¬ move dissolved organic substance and residual digestive chemicals by being abundantly diluted in water so as to form a suspension which is passed on to a suitable dewa- tering device, generally a fourdrinier wire on which the fibres are dewatered, whereupon they are finally dried, e.g. by being subjected to a combination of pressing and heating operations. In many cases, the pulp is also bleached in a special bleaching step between cooking and drying, primarily in order to increase the bright¬ ness of the pulp. Such drying is conducted to dry so¬ lids contents considerably exceeding 80%. In practice, the dry solids content of paper pulp in sheet or web form is about 90% and that of fluff pulp about 92-93%. Dried paper pulp of the above generally described type is supplied to special paper mills where paper is manufactured (in some cases, there are also integrated manufacturing plants in which the pulp mill is integrat- ed with or directly connected to the paper mill. In these cases, the pulp is however not supplied in the dried state, but in a still water-suspended state from the pulp mill to the paper mill or paper machine). Tradi¬ tionally, papermaking is carried out in such a manner that the pulp, optionally together with one or more additional paper pulps, is slushed in water in a so- called machine vat so as to yield a stock which is processed in different ways, primarily by beating in a mill or a refiner, before it is distributed via a head box or the like onto a forming wire (alterna¬ tively, a cylinder or the like) on which a coherent web of fibres bonded together is formed as the water in the stock drains through the wire. The web is there¬ after caused to pass a number of press rolls and a drying station in which it is dried so as to yield finished paper. For many applications, the paper requires colour¬ ing. This is done either by so-called stock or vat colouring or, alternatively, by surface colouring. Stock colouring, which is the commonest colouring method, is done by adding a colouring agent to the stock, always containing uncoloured pulp fibres, in a step somewhere between the slushing of the pulp in the machine vat and the forming on the wire, gene¬ rally as early as the machine vat, and fixing it to the fibres in a suitable manner. Surface colouring is carried out by adding a dye solution to the formed paper web when it has passed the drying station, for instance in a size press located after the drying station. Common agents for stock colouring are so¬ dium salts of organic sulphonic acids (C H? , , S02OH) and substantive dyes made up of straight-chain molecules which can form hydrogen bonds to the fibre surfaces. In practice, such stock colouring yields good results as to the task of providing a homogeneously vat-coloured paper at minimal costs. However, this technique is restricted to a single colour or shade throughout the paper. As compared with stock colouring, surface colouring is more expensive and involves many more problems. A serious drawback of the surface-colouring technique also is that it often yields a paper with different colour strength on the different sides.
Besides the conventional wet-forming technique related above, methods for dry-forming of paper have also been developed in recent years. Dry-formed paper is manufactured basically in that the pulp supplied in sheet or web form (alternatively in fluff form) is shredded and finely divided, and incorporated in a flow of air which, like the stock, is caused to pass a form¬ ing wire on which a paper web of substantially uniform thickness is formed. As opposed to the case of wet- formed paper, this technique requires the addition of special binders serving to bond the separate fibres together so as to form a coherent web. In the dry-form¬ ing method, which is especially suitable for manufactur¬ ing a fluffy tissue paper having a structure which highly resembles textile, the colouring of the paper in particular is a problem which is difficult to solve. Thus, colouring is effected by spraying a suitable dye solution onto the finished paper web. In practice, this technique provides poor colouring throughout the paper material, generally yielding a more or less patchy paper with different colour strength on the different sides. Such tissue paper is unsuited for making e.g. napkins, cloths and the like, i.e. products on which the demands for uniform and homogeneous colouring are great.
The present invention primarily aims at creating conditions for allowing a simple and high-quality co- louring of dry-formed tissue paper and, to this end, relates to a dried market paper pulp manufactured from a raw material of wood chips, which pulp is character¬ ised in that the fibres therein are coloured by means of a colouring agent added to the fibres while they still are in a water suspension, but prior to final drying.
The invention further relates to a process for mak¬ ing market paper pulp, comprising the steps of cooking a raw material of wood chips for delignifying said raw material and exposing the cellulosic fibres therein, washing the thus exposed fibres by dilution in a water suspension and, after dewatering the fibres, drying them prior to sale. Characteristic of the inventive process is that the fibres are coloured prior to the final drying, more particularly by adding a colouring agent in a manner known per se or in any optional man¬ ner to said fibre-water suspension, so as to produce a dried market pulp the individual fibres of which are coloured.
Colouring the pulp in accordance with the invention in connection with the very manufacture thereof gives the advantage not only that coloured paper can be manufactured by dry-forming without requiring any co¬ louring operation whatsoever in the paper mill or paper machine, but also that colouring can be carried out by conventional stock colouring technique, yielding a homo¬ geneous and durable colouring of the fibres. Another major advantage of the invention is that it allows manu¬ facturing not only a dry-formed but also a wet-formed paper of veined structure. Thus, according to a pre¬ ferred embodiment of the invention, the paper can be manufactured from two or more paper pulps at least one of which is coloured while the other is uncoloured or differently coloured.
The inventive pulp-making process can be carried out, for example in the manner appearing from the en¬ closed flow diagram. From the digester and different washing steps (and after optional bleaching) in a con¬ ventional fibre line, a suspension of cellulosic fibres and water (pulp concentration of about 1%) is pumped to a first mixer 1 in which a hardening agent is added to adjust the hardness of the water to 5° dH. This addition is made to achieve improved addition of a colouring agent supplied in a following mixer 2. The colouring agent may be an azo dye, for instance of the type commercially available under the trade designation CARTASOL ROT, which is dosed in an amount of 5% by weight based on the amount of dry pulp. After the addition of the colouring agent, this should have a residence time of about 5 minutes in a reaction vessel 3. A fixing agent, for instance a quarternary polyhydroxy- alkylene polyamine sold under the designation CARTAFIX FF, is dosed at 4 in order that the last dye residues should be added to the cellulose and also in order to obtain sufficient colour fastness. Finally, the fibre suspension passes through a reaction vessel 5 in which the fibres supplied with fixing agent are allowed to remain for about one minute. The cellulosic fibres are now coloured. With present-day techniques, the defibering mills used in dry-forming plants require that the pulp be supplied with a debonding agent which reduces the fibre bonds when the cellulose is dried. The addition of such a debonding agent designated BEROCELL B-584 in an amount of 0.3% by weight is carried out in the mixer 6. The cellulose coloured and treated with debonding agent can now, after a residence time of about one minute in a reaction vessel 7, pass into a pulp drier 8 for conven¬ tional dewatering, final drying and reeling. The process described above can be used whether the pulp is bleached or unbleached. In the case of unbleached pulp, use is advantageously made in a con¬ ventional manner of a basic colouring agent containing an amino group ( - NH- ) while, in the case of bleached pulp, use is made of acid colouring agents, such as sodium salts of organic sulphonic acids, or of substan¬ tive dyes made up of straight-chain molecules which can form hydrogen bonds to the fibre surfaces. In the latter case, no fixing agent is required. It is also conceivable to use different types of pigment dyes which are insoluble in water and precipitate onto the fibre upon sizing with rosin and alum.
It should also be pointed out that a cellulose as above can also be manufactured without any debonding agent but in that case, the defibering mill of the dry- forming plant must have a considerably increased capacity. Although the colouring agent here discussed is added to the fibres most advantageously while they remain sus¬ pended in water at low concentrations, e.g. about 1%, it is conceivable to add the colouring agent also at higher pulp concentrations, e.g. even up to about 50%, which may prevail in press sections after the wire. The main point is that the addition of the colouring agent is carried out prior to the final drying.

Claims

1. A dried market paper pulp manufactured from a raw material of wood chips, c h a r a c t e r i s e d in that the fibres therein are coloured by means of a colouring agent added to the fibres while they still are in a water suspension, but prior to final drying.
2. Paper pulp as claimed in claim 1, c h a r a c ¬ t e r i s e d in that it is bleached prior to colouring.
3. Process for making market paper pulp, comprising the steps of cooking a raw material of wood chips for de- lignifying said raw material and exposing the cellulosic fibres therein, washing the thus exposed fibres by dilu¬ tion in a water suspension and, after dewatering the fibres, drying them prior to sale, for instance to a paper mill, c h a r a c t e r i s e d in that the fibres are coloured prior to the final drying, more particularly by adding a colouring agent in a manner known per se or in any optional manner to said fibre-water suspension, so as to produce a dried market pulp the individual fibres of which are homogeneously coloured.
4. process as claimed in claim 3, in which the pulp in a manner known per se or in any optional manner is bleached after cooking, c h a r a c t e r i s e d in that the addition of the colouring agent is carried out after bleaching and prior to drying.
5. The use of paper pulp as claimed in claim 1 or 2 for making paper, especially dry-formed tissue paper.
6. Use of paper pulp as claimed in claim 1 or 2 for making paper, especially dry-formed tissue paper, where¬ in the paper is manufactured from two or more paper pulps t least one of which is coloured while the other is un- coloured or differently coloured so as to produce a paper of veined structure.
PCT/SE1988/000466 1987-09-22 1988-09-12 Market paper pulp, process for making market paper pulp and use of such pulp in papermaking WO1989002952A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8703654-7 1987-09-22
SE8703654A SE462108B (en) 1987-09-22 1987-09-22 PREPARATION OF TORR-SIZED TISSUE PAPER, WHICH A DIFFERENT MASS IS USED

Publications (1)

Publication Number Publication Date
WO1989002952A1 true WO1989002952A1 (en) 1989-04-06

Family

ID=20369639

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1988/000466 WO1989002952A1 (en) 1987-09-22 1988-09-12 Market paper pulp, process for making market paper pulp and use of such pulp in papermaking

Country Status (3)

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AU (1) AU2484888A (en)
SE (1) SE462108B (en)
WO (1) WO1989002952A1 (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000066835A1 (en) * 1999-04-30 2000-11-09 Kimberly-Clark Worldwide, Inc. Paper products and a method for applying an adsorbable chemical additive to cellulosic fibers
WO2003035979A1 (en) * 2001-10-25 2003-05-01 M-Real Oyj Method for manufacturing filler containing chemical pulp
US6582560B2 (en) 2001-03-07 2003-06-24 Kimberly-Clark Worldwide, Inc. Method for using water insoluble chemical additives with pulp and products made by said method
EP1342845A1 (en) * 2002-03-06 2003-09-10 SCA Hygiene Products GmbH Multi-ply tissue paper product
FR2839519A1 (en) * 2002-05-07 2003-11-14 Weyerhaeuser Compagny BLEACHED PASTE FOR CELLULOSE DOWN, AND PROCESS FOR THE PRODUCTION THEREOF
US6749721B2 (en) 2000-12-22 2004-06-15 Kimberly-Clark Worldwide, Inc. Process for incorporating poorly substantive paper modifying agents into a paper sheet via wet end addition
US6916402B2 (en) 2002-12-23 2005-07-12 Kimberly-Clark Worldwide, Inc. Process for bonding chemical additives on to substrates containing cellulosic materials and products thereof
EP1659218A1 (en) * 2004-11-19 2006-05-24 The Procter & Gamble Company A tissue paper with silk fibers
US7670459B2 (en) 2004-12-29 2010-03-02 Kimberly-Clark Worldwide, Inc. Soft and durable tissue products containing a softening agent
US7749356B2 (en) 2001-03-07 2010-07-06 Kimberly-Clark Worldwide, Inc. Method for using water insoluble chemical additives with pulp and products made by said method
WO2010144475A1 (en) * 2009-06-09 2010-12-16 Buckeye Technologies Inc. Dyed cellulose comminution sheet, dyed nonwoven material, and processes for their production
WO2012012633A1 (en) * 2010-07-22 2012-01-26 International Paper Company Process for preparing fluff pulp sheet with cationic dye and debonder surfactant and fluff pulp sheet made from same
CN104220671A (en) * 2009-08-05 2014-12-17 国际纸业公司 Composition containing a cationic trivalent metal and debonder and methods of making and using the same to enhance fluff pulp quality
US8951626B2 (en) 2008-04-07 2015-02-10 Sca Hygiene Products Ab Hygiene or wiping product comprising at least one patterned ply and method for patterning the ply
US8974636B2 (en) 2010-07-20 2015-03-10 International Paper Company Composition containing a multivalent cationic metal and amine-containing anti-static agent and methods of making and using
US10260201B2 (en) 2009-08-05 2019-04-16 International Paper Company Process for applying composition containing a cationic trivalent metal and debonder and fluff pulp sheet made from same
US10415190B2 (en) 2009-08-05 2019-09-17 International Paper Company Dry fluff pulp sheet additive
US20220178082A1 (en) * 2019-02-12 2022-06-09 Stora Enso Oyj Method of producing a molded fiber product and molded fiber product

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DE2039034A1 (en) * 1969-08-08 1971-02-25 Sandoz Ag Process for uniform coloring and / or optical lightening of paper
SE369428B (en) * 1969-07-24 1974-08-26 K Kroeyer
DE3041682A1 (en) * 1979-11-09 1981-05-21 Colgate-Palmolive Co., 10022 New York, N.Y. DYE MIXTURE FOR LIGHTENING AND WHITENING CELLULOSE MATERIAL AND THEIR USE FOR PRODUCING SUCTIONABLE DISPOSABLE ARTICLES WITH IMPROVED COLOR
SE436768B (en) * 1983-06-09 1985-01-21 Korsnaes Marma Ab Procedure for manufacturing fluff pulp

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
SE369428B (en) * 1969-07-24 1974-08-26 K Kroeyer
DE2039034A1 (en) * 1969-08-08 1971-02-25 Sandoz Ag Process for uniform coloring and / or optical lightening of paper
DE3041682A1 (en) * 1979-11-09 1981-05-21 Colgate-Palmolive Co., 10022 New York, N.Y. DYE MIXTURE FOR LIGHTENING AND WHITENING CELLULOSE MATERIAL AND THEIR USE FOR PRODUCING SUCTIONABLE DISPOSABLE ARTICLES WITH IMPROVED COLOR
SE436768B (en) * 1983-06-09 1985-01-21 Korsnaes Marma Ab Procedure for manufacturing fluff pulp

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6423183B1 (en) 1997-12-24 2002-07-23 Kimberly-Clark Worldwide, Inc. Paper products and a method for applying a dye to cellulosic fibers
WO2000066835A1 (en) * 1999-04-30 2000-11-09 Kimberly-Clark Worldwide, Inc. Paper products and a method for applying an adsorbable chemical additive to cellulosic fibers
US6749721B2 (en) 2000-12-22 2004-06-15 Kimberly-Clark Worldwide, Inc. Process for incorporating poorly substantive paper modifying agents into a paper sheet via wet end addition
US7678232B2 (en) 2000-12-22 2010-03-16 Kimberly-Clark Worldwide, Inc. Process for incorporating poorly substantive paper modifying agents into a paper sheet via wet end addition
US6582560B2 (en) 2001-03-07 2003-06-24 Kimberly-Clark Worldwide, Inc. Method for using water insoluble chemical additives with pulp and products made by said method
US7749356B2 (en) 2001-03-07 2010-07-06 Kimberly-Clark Worldwide, Inc. Method for using water insoluble chemical additives with pulp and products made by said method
US6984290B2 (en) 2001-03-07 2006-01-10 Kimberly-Clark Worldwide, Inc. Method for applying water insoluble chemical additives with to pulp fiber
AU2002335317B2 (en) * 2001-10-25 2007-01-04 M-Real Oyj Method for manufacturing filler containing chemical pulp
WO2003035979A1 (en) * 2001-10-25 2003-05-01 M-Real Oyj Method for manufacturing filler containing chemical pulp
EP1342845A1 (en) * 2002-03-06 2003-09-10 SCA Hygiene Products GmbH Multi-ply tissue paper product
FR2839519A1 (en) * 2002-05-07 2003-11-14 Weyerhaeuser Compagny BLEACHED PASTE FOR CELLULOSE DOWN, AND PROCESS FOR THE PRODUCTION THEREOF
US6916402B2 (en) 2002-12-23 2005-07-12 Kimberly-Clark Worldwide, Inc. Process for bonding chemical additives on to substrates containing cellulosic materials and products thereof
WO2006055789A1 (en) * 2004-11-19 2006-05-26 The Procter & Gamble Company A tissue paper with silk fibers
EP1659218A1 (en) * 2004-11-19 2006-05-24 The Procter & Gamble Company A tissue paper with silk fibers
JP2008518745A (en) * 2004-11-19 2008-06-05 ザ プロクター アンド ギャンブル カンパニー Tissue paper with silk fiber
US7670459B2 (en) 2004-12-29 2010-03-02 Kimberly-Clark Worldwide, Inc. Soft and durable tissue products containing a softening agent
US8951626B2 (en) 2008-04-07 2015-02-10 Sca Hygiene Products Ab Hygiene or wiping product comprising at least one patterned ply and method for patterning the ply
EP2749680A1 (en) 2009-06-09 2014-07-02 Buckeye Technologies Inc. Dyed cellulose comminution sheet, dyed nonwoven material, and processes for their production
EP2267206A1 (en) 2009-06-09 2010-12-29 Buckeye Technologies Inc. Dyed cellulose comminution sheet, dyed nonwoven material, and processes for their production
CN102575394A (en) * 2009-06-09 2012-07-11 博凯技术公司 Dyed cellulose comminution sheet, dyed nonwoven material, and processes for their production
WO2010144475A1 (en) * 2009-06-09 2010-12-16 Buckeye Technologies Inc. Dyed cellulose comminution sheet, dyed nonwoven material, and processes for their production
CN104220671B (en) * 2009-08-05 2016-01-20 国际纸业公司 Comprise the composition of CATION trivalent metal and degumming agent and the method for manufacture method and use said composition raising Time of Fluff Slurry quality thereof
CN104220671A (en) * 2009-08-05 2014-12-17 国际纸业公司 Composition containing a cationic trivalent metal and debonder and methods of making and using the same to enhance fluff pulp quality
US9260820B2 (en) 2009-08-05 2016-02-16 International Paper Company Composition containing a cationic trivalent metal and debonder and methods of making and using the same to enhance fluff pulp quality
US10260201B2 (en) 2009-08-05 2019-04-16 International Paper Company Process for applying composition containing a cationic trivalent metal and debonder and fluff pulp sheet made from same
US10415190B2 (en) 2009-08-05 2019-09-17 International Paper Company Dry fluff pulp sheet additive
US10513827B2 (en) 2009-08-05 2019-12-24 International Paper Company Composition containing a cationic trivalent metal and debonder and methods of making and using the same to enhance fluff pulp quality
US8974636B2 (en) 2010-07-20 2015-03-10 International Paper Company Composition containing a multivalent cationic metal and amine-containing anti-static agent and methods of making and using
US8871054B2 (en) 2010-07-22 2014-10-28 International Paper Company Process for preparing fluff pulp sheet with cationic dye and debonder surfactant
CN103003488A (en) * 2010-07-22 2013-03-27 国际纸业公司 Process for preparing fluff pulp sheet with cationic dye and debonder surfactant and fluff pulp sheet made from same
WO2012012633A1 (en) * 2010-07-22 2012-01-26 International Paper Company Process for preparing fluff pulp sheet with cationic dye and debonder surfactant and fluff pulp sheet made from same
US20220178082A1 (en) * 2019-02-12 2022-06-09 Stora Enso Oyj Method of producing a molded fiber product and molded fiber product

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SE462108B (en) 1990-05-07
SE8703654D0 (en) 1987-09-22
AU2484888A (en) 1989-04-18

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