EP0016465A1 - Procédé de préparation de papier et de carton couchés et masse de couchage pour la réalisation de ce procédé - Google Patents

Procédé de préparation de papier et de carton couchés et masse de couchage pour la réalisation de ce procédé Download PDF

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Publication number
EP0016465A1
EP0016465A1 EP80101472A EP80101472A EP0016465A1 EP 0016465 A1 EP0016465 A1 EP 0016465A1 EP 80101472 A EP80101472 A EP 80101472A EP 80101472 A EP80101472 A EP 80101472A EP 0016465 A1 EP0016465 A1 EP 0016465A1
Authority
EP
European Patent Office
Prior art keywords
coating
coating slip
slip
weight
cardboard
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.)
Granted
Application number
EP80101472A
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German (de)
English (en)
Other versions
EP0016465B1 (fr
EP0016465B2 (fr
Inventor
Kurt Werner Dr. Dipl.-Chem. Bergmann
Popko Julius Westerhuis
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.)
Feldmuehle AG
Original Assignee
Feldmuehle AG
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
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Application filed by Feldmuehle AG filed Critical Feldmuehle AG
Priority to AT80101472T priority Critical patent/ATE886T1/de
Publication of EP0016465A1 publication Critical patent/EP0016465A1/fr
Publication of EP0016465B1 publication Critical patent/EP0016465B1/fr
Application granted granted Critical
Publication of EP0016465B2 publication Critical patent/EP0016465B2/fr
Expired 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/60—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof

Definitions

  • the present invention relates to a process for producing coated paper and cardboard, in which an aqueous coating slip with particles of at least one aqueous plastic dispersion and inorganic pigments is applied to coating paper or cardboard and dried.
  • LWC light weight coated
  • Penetration of the coating slips also has another disadvantage.
  • the proportion of the coating slip penetrating into the paper can no longer contribute to improving the quality of the paper surface. It is therefore generally desirable that only a certain proportion of the coating slip penetrates into the substrate and causes the surface coating to be anchored there.
  • the larger part, on the other hand, should remain on the surface and improve printability. Coating compounds that penetrate too deep therefore cause loss of quality even in those papers and cardboard types in which streaking through of the coating compound does not lead to the operational disruptions described above due to its higher basis weight.
  • the object of the present invention is to eliminate these known difficulties and to provide a method for producing coated paper and cardboard in which the coating slip is only to a small extent penetrates into the substrates.
  • the coating composition should be prevented from bleeding through and a smooth and trouble-free coating process should be ensured.
  • Another important task is the production of LWC papers with a reduced basis weight, whereby a smaller amount of valuable raw materials and less energy is used to produce a constant amount of paper with the same quality level.
  • the object of the invention is also to provide a coating slip which can be prepared using conventional coating color components, in particular conventional plastic dispersions and pigments, and which can be prepared and processed using the usual equipment, but which penetrates to a significantly lesser extent into the substrates and when used to coat LWC papers, punch-through is largely avoided.
  • plastic particles with a non-cationic charge should be understood to mean those plastic dispersions which have an anionic emulsifier system or are nonionically stabilized. Many plastic dispersions whose emulsifier system consists of both anionic and non-ionic substances also fall under the term mentioned. However, the selected formulation also includes dispersions in which the ionic charge state is determined by certain groups of the polymer itself.
  • plastic dispersions the particles of which carry a cationic charge and also which are not so stable in their stability when added to a coating slip under the influence of a weakly cationic substance that problem-free manufacture, storage and Further processing of the coating slip is no longer possible.
  • a weakly cationic substance that problem-free manufacture, storage and Further processing of the coating slip is no longer possible.
  • an influence on the degree of stabilization is often already noticeable by an increase in the biscuitity which is above the usual level.
  • Plastic dispersions which have such a high degree of stabilization are also unsuitable that when a weakly cation-active substance is added to a coating slip under the influence of an acidic paper surface, their degree of stabilization is not influenced or is influenced only to such an extent that solidification of the coating slip occurs the points of contact between the line and paper did not occur.
  • weakly cationic substances They are therefore referred to below as weakly cationic substances.
  • the cationic effect they emanate is so low. that it has no significant influence on the stability of the coating slips.
  • Their characteristic effect only occurs at an acidic pH. When they come into contact with an acid-produced paper, their cationic effect increases and causes the coating slip to solidify at the points where there is contact between the coating slip and acidic paper.
  • the paper coating slip can also fulfill its intended purpose, which consists in improving the surface, far better than such a coating slip, which has penetrated the paper to a considerable extent.
  • a base paper or cardboard with a pH between 4.5 and 6.0 has proven to be particularly advantageous.
  • Base paper and cardboard are often produced in this pH range and can therefore be used without additional measures be used in the method according to the invention.
  • it is also particularly advantageous that the use of such substrates results in very rapid and complete destabilization in the interface area.
  • such base papers or cardboards are used in which the pH was adjusted to a value of 4.5 to 6.0 by adding a sulfuric acid compound of aluminum to the pulp pulp.
  • a sulfuric acid compound of aluminum to the pulp pulp.
  • aluminum sulfate and potassium aluminum sulfate have proven to be suitable. If an even lower pH value setting is desired, this is expediently also carried out using sulfuric acid.
  • Aqueous coating slips are mostly produced and processed in the alkaline range.
  • the adjustment of the coating slip to a pH value between 7.5 and 11 has proven to be expedient. With coating slips in this pH range, sufficient stability during production and processing as well as safe solidification of the coating slip in the interface area is guaranteed when the coating slip is applied to the substrate.
  • plastic dispersions whose particles have a nonionic charge state are also suitable for carrying out the process according to the invention, plastic dispersions in which the particles are anionically charged have proven to be particularly useful. These dispersions have a Destabilisierun g is particularly easy to reach by the more cation becoming active in the acidic pH range substance.
  • plastic dispersions are used in which the anion-active charge state of the particles is brought about by anionic groups of the plastic molecule.
  • plastic dispersions in which the anionic charge state of the particles is due to an anionic emulsifier or stabilizer system have proven to be very particularly advantageous.
  • the substance added to the coating slip is reinforced by its contact with the acidic surface of the substrate.
  • Substances which are only weakly cation-active in the coating slip are particularly suitable in this regard. Such substances can be changed particularly well in their charge state by a shift in their pH.
  • the cationic substances to be added to the coating slip merely have to have the property of becoming strongly cationic at a pH ⁇ 6.5.
  • Water-soluble amino compounds which have two or more alkyl, aryl or aralkyl radicals on the nitrogen atom and belong to the group of tertiary and quaternary amino compounds have proven to be particularly suitable.
  • the quaternary amino compounds are preferably suitable.
  • the destabilization of the coating slip in the interface area with the substrate depends on the type which is strongly cation-active in a pH range below 6.5 expecting substance, the stability of the binder used and the amount in which this substance is added to the coating slip. The addition is advantageously carried out only in such an amount that it does not impair the stability of the coating slip.
  • the process according to the invention is characterized in that an S-rich mass with a solids content of 30 to 35% by weight is applied on one side to a coating base paper or cardboard with an air brush coating device in such an amount that the weight of the dried coating 10 - 12 g / m 2 . It can be seen that the coating slip penetrates less deeply into the substrate and a larger amount of the coating remains on the surface and contributes to improving the quality.
  • the method according to the invention is particularly suitable for the production of LWC papers. Through its use, the feared streaking of the coating slip is avoided and a trouble-free coating process is made possible. The elimination of costly machine downtimes and the substantially better utilization of the machines and aggregates, which are subject to high capital expenditures, creates a considerable economic advantage if the process is used while maintaining the previous basis weights of the base paper or the coat weight. The use of the method according to the invention offers further significant advantages while consistently taking advantage of the advantages which result from the lower penetration of the coating slips.
  • LWC papers that were produced by the coating process according to the invention are considerably better printable in the gravure printing process.
  • the improved quality is noticeable by the greatly reduced number of "missing dots" (tiny, unprinted places), which occur in comparison to the previously usual coating methods.
  • "missing dots” do not even occur if, when using the coating method according to the invention, the coat weight is reduced at the same time as the previously used methods. This is a clear indication that the coating slip penetrates less deeply into the coating base and remains on the surface to a considerably greater extent than before.
  • Another important advantage that is made possible by the invention is the reduction in the basis weight of the coating base paper to a basis weight of up to 32 g / m 2 . So far, the lower basis weight limit for LWC base papers was 36 g / m 2 . Falling below this limit led to increased streaking of the coating slips.
  • the use of a lighter coating base paper is of particular economic interest because the paper is the expensive raw material component compared to the coating slip.
  • the present invention makes it possible to determine the ratio of coating base paper and line application to shift the weight beyond the existing limits and to adapt the products better to the respective requirements. Another advantage is that additional raw material costs can be saved by reducing the coat weight. Whereas previously a coat weight of 8 g / m 2 was considered the lower limit, coat weights of 6 to 7 g / m 2 and side can now be achieved. In order to achieve these low coat weights, the solids content of the coating slip is reduced in a simple manner. The lowering of the solids content is in direct contrast to the previously known proposals to prevent the coating slips from streaking through by increasing the solids content.
  • a coating slip with a solids content of 45 to 62% by weight is used.
  • This coating slip is applied to a wood-free coating base paper with a basis weight of 32-38 g / m 2 , preferably of 34-36 g / m 2 , with a Squeegee coating device applied on both sides, the weight of the dry coating being 6 to 7 g / m 2 and side.
  • a coating slip has been found to be particularly suitable for carrying out the process according to the invention, which is characterized in that it is adjusted to a pH of 8.1 to 10.1 and, with a solids content of 48-62% by weight, the following composition having:
  • the preparation of the coating slip is not subject to any particular restrictions, but it has proven expedient to first add the cationic substance and then to correct the pH after dispersing the pigments in the alkaline range and adding the plastic dispersion (s).
  • Examples 1 to 5 of the coating slip compositions according to the invention represent those which are preferably suitable for the production of lightweight papers which are very suitable for rotogravure printing. Comparative Example 1 describes a coating slip composition without the added substances, which become strongly cationic at pH ⁇ 6.5.
  • Examples 6 to 8 describe coating slip compositions according to the invention which are preferably suitable for the production of lightweight papers which are very suitable for web offset printing. Comparative Example 2 again describes corresponding coating slip compositions without the added substances, which become strongly cationic at a pH ⁇ 6.5.
  • Example 9 gives a typical example of the production of coated paper using the coating slips of Examples 1 to 8 and Comparative Examples 1 and 2.
  • a mixture of pigment and plastic dispersion corresponding to Example 1 is added with 1716 parts by weight of the solution of tertiary dimethylhexylammonium base used in Example 1.
  • the coating slip is diluted to 50% solids content and a pH of 8.4 is set.
  • a coating slip is prepared in accordance with Example 1, the solution used in Example 1 being replaced by 857 parts by weight of a 2.3% strength aqueous solution of a quaternary trimethylbenzylammonium compound.
  • the coating slip is adjusted to a solids content of 50% by weight and a pH of 8.6.
  • a coating slip is prepared in accordance with Example 1, 1287 parts by weight of the solution used in Example 3 being added.
  • the coating slip is adjusted to a solids content of 50% by weight and a pH of 8.6.
  • Example 4 a coating slip is produced, the solids content of which is adjusted to 46% by weight and which has a pH of 8.2.
  • a coating slip is prepared in accordance with Example 1 and adjusted to a solids content of 50% and a pH of 8.5. In contrast to Examples 1 to 5, however, no solution of a cation-active substance is added to this coating slip.
  • an aqueous slurry is prepared from 9300 parts by weight of china clay.
  • a solution is prepared from 800 parts by weight of water and 200 parts by weight of casein by adding 19 parts by weight of 33% sodium hydroxide solution and 12 parts by weight of 25% ammonia, which solution is added to the pigment slurry.
  • a coating slip is prepared in accordance with Example 6, but instead of the one added in Example 6 Solution 1516 parts by weight of a 15.1% solution of the same substance as in Example 6 are added. The coating slip is adjusted to a solids content of 50% and a pH of 8.2.
  • a coating slip is prepared in accordance with Example 6, but to which 1312 parts by weight of a 12.5% strength solution of the same substance as in Example 6 are added instead of the solution added in Example 6.
  • the coating slip is adjusted to a solids content of 60% and a pH of 9.6.
  • a coating slip is prepared in accordance with the recipes of Examples 6 to 8, but no solution of a cation-active substance has been added.
  • the coating slip is adjusted to a pH of 10 and a solids content of 50%.
  • a coating slip according to Example 5 is applied to a wood-containing coating base paper with a Basis weight of 35 g / m 2 and a surface pH of 4.6 applied and dried, the weight of the dried coating is 6.5 g / m 2 and side.
  • 1 and 2 show schematic side views of a part of the device
  • Fig. 3 is an overall view of the device in perspective.
  • Fig. 1 illustrates the principle in a simple manner.
  • a paint sump 17 is formed from the coating slip to be examined. Due to the pressure of the squeeze rollers 4, 5, the coating slip is pressed through the test track 12 and thereby produces more or less strong markings on a contrast material 16. The bigger and bigger the richer the markings, the more the coating slip tends to strike through.
  • a paper that differs in color from the coating slip can be used as contrast material.
  • FIGS. 2 and 3 An improved test method used in the present case can be seen in FIGS. 2 and 3.
  • the squeeze roller 5 is covered with a moving film web 11 made of polyethylene.
  • the film web prevents the test web 12 from sticking to the squeeze roller 5.
  • An LWC base paper of 38 g / m 2 is used as the test web.
  • On the test track 12, an initial mark 18 is attached, which is immediately in front of the line of contact of the two squeeze rollers 4, 5 and above the start of the contrast material 16 a.
  • a black paper is used as contrast material 16 a, which is glued to the nip roller 4 with its beginning.
  • the length of the contrast material 16 a corresponds to the circumference of the squeeze roller 4.
  • the length of the test track 12 is chosen so that it corresponds to 6 times the circumference of the squeeze roller 4 and thus 6 times the length of the contrast material 16 a. This measure ensures that the markings on the contrast paper are produced in 6 times reproduced form.
  • the end of the test web 12 is connected by an adhesive seam 14, which also represents the end marking, to a material web 13 made of polyethylene film that is impenetrable for the coating slip. Thereby, it is possible to perform the scan path to behind the end of the glue line 14 through the sump color, without more marks correspond than the metered fürn e g, appear on the contrast material.
  • the width of the contrast material 16 a is approximately 3 cm less than the width of the nip rollers 45.
  • the film web 11 and the impenetrable material web 13 are unwound from unwinding rolls 2 and 3.
  • the unwinding rollers 2, 3 are mounted in bearing blocks 15 attached to frame 1 and are braked by band brakes 6.
  • the width of the film web 11 corresponds to the width of the contrast material 16 a.
  • the steering roller 9 for guiding the film web 11 is arranged below the squeeze roller 5.
  • the collecting trough 10 is attached below the squeeze rollers 4, 5 to receive dripping coating slip.
  • the squeeze rollers 4, 5 are driven by hand crank 7 onto the permanently mounted squeeze roller 5.
  • the squeeze roller 4 can be pressed against the squeeze roller 5, the contact pressure being adjustable via the rotary knob 8 and being readable on a scale (not shown).
  • the squeeze roller 4 is driven by a squeeze roller 5 via a gear pair, not shown.
  • Level 1 indicates a very low breakdown behavior and level 8 a very strong breakdown behavior.
  • the informative value of this test result is additionally supported when samples of the finished papers are examined using the Heliotest method.
  • the Heliotest process is a process used in the paper and printing industry and was developed by the Center Technique de l'Industrie des Textils, Cartons et Celluloses; Grenoble, France.
  • the heliotest is used to determine the number of "missing dots". Compared to the previously known coating methods, the "missing dots" are reduced by between 30 and 40%.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Studio Devices (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
EP80101472A 1979-03-24 1980-03-20 Procédé de préparation de papier et de carton couchés et masse de couchage pour la réalisation de ce procédé Expired EP0016465B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80101472T ATE886T1 (de) 1979-03-24 1980-03-20 Verfahren zum herstellen von gestrichenem papier und karton und streichmasse zur durchfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2911679A DE2911679C3 (de) 1979-03-24 1979-03-24 Verfahren zum Herstellen von gestrichenem Papier und Karton und Streichmasse zur Durchführung des Verfahrens
DE2911679 1979-03-24

Publications (3)

Publication Number Publication Date
EP0016465A1 true EP0016465A1 (fr) 1980-10-01
EP0016465B1 EP0016465B1 (fr) 1982-04-21
EP0016465B2 EP0016465B2 (fr) 1986-08-06

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ID=6066351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101472A Expired EP0016465B2 (fr) 1979-03-24 1980-03-20 Procédé de préparation de papier et de carton couchés et masse de couchage pour la réalisation de ce procédé

Country Status (6)

Country Link
US (1) US4495029A (fr)
EP (1) EP0016465B2 (fr)
JP (1) JPS55128099A (fr)
AT (1) ATE886T1 (fr)
DE (1) DE2911679C3 (fr)
FI (1) FI65642C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192252A1 (fr) * 1985-02-22 1986-08-27 Institut für Papier-,Zellstoff-und Fasertechnik der Technischen Universität Graz Procédé d'amélioration du "holdout" des couleurs d'impression, laques et masses de revêtement sur des produits en feuille constitués de fibres et de désencrage des fibres ainsi que masse pour la mise en oeuvre du procédé et produits en feuille obtenus
EP0174859A3 (fr) * 1984-09-13 1987-08-19 Canon Kabushiki Kaisha Matériel pour l'enregistrement par jet d'encre et méthode
EP0279313A1 (fr) * 1987-02-10 1988-08-24 Institut für Papier-,Zellstoff-und Fasertechnik der Technischen Universität Graz Procédé de fabrication d'un agent à base de pigments apte à l'industrie papetière, qui améliore la possibilité d'imprimer sur du papier ou du carton, l'agent et son utilisation
EP0263519A3 (en) * 1986-10-08 1988-09-07 Institut Fur Papier-,Zellstoff-Und Fasertechnik Der Technischen Universitat Graz Means for improving the printability of paper and cardboard

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI72771C (fi) * 1985-03-14 1987-07-10 Kemira Oy Belaeggningspasta foer papper eller kartong och dispergeringsblandning foer pigment.
SE8800660L (sv) * 1988-02-26 1989-08-27 Bilsom Ab Saett och medel foer ytbehandling av fiberinnehaallande, vaesentligen oorganiskt material
DE4118340C2 (de) * 1991-06-04 1996-07-11 Drescher Geschaeftsdrucke Verfahren zur Herstellung eines Papiererzeugnisses, danach hergestelltes Papiererzeugnis und Verwendung desselben
US5512618A (en) * 1993-05-07 1996-04-30 Enviro-Chem, Inc. Suspension-enhancing adhesive additive for paper manufacturing, liquid adhesive composition using same, and method of preparing liquid adhesive composition
US5492599A (en) * 1994-05-18 1996-02-20 Minnesota Mining And Manufacturing Company Treated substrate having improved release properties
EP0796947B9 (fr) * 1996-03-22 2003-11-05 Nippon Paper Industries Co., Ltd. Papier couché par moulage et procédé de fabrication
DE19936476A1 (de) * 1999-08-03 2000-07-06 Ctp Papierhilfsmittel Gmbh & C Streichmasse zur Herstellung bedruckbarer Papiere
DE10329675A1 (de) * 2003-07-01 2005-02-03 Voith Paper Patent Gmbh Verfahren und Vorrichtung zur Herstellung und/oder Behandlung einer Faserstoffbahn

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515340A (en) * 1947-04-01 1950-07-18 Gardner Board & Carton Co Coated paperboard and method of makign same
FR1364193A (fr) * 1963-05-22 1964-06-19 Oxford Paper Co Procédé de fabrication de compositions de matières insolubles dans l'eau conformées à partir de matières organiques polymères solubles dans l'eau
GB1163842A (en) * 1965-09-27 1969-09-10 Mead Corp Process for Incoporating Additives in Paper and the Like
DE2144318A1 (de) * 1970-09-04 1972-03-09 Scott Paper Co., Delaware County, Pa. (V.StA.) Wäßrige wärmekoagulierbare Papierbeschichtungsmasse

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA741224A (en) * 1966-08-23 Shimizu Hideo Method of making coated printing paper
BE626416A (fr) * 1961-12-23
DE1696171A1 (de) * 1967-10-28 1971-11-04 Basf Ag Bindemittel fuer Papierstreichmassen auf Basis waessriger Dispersionen von Mischpolymerisaten des Vinylpropionats
US3578493A (en) * 1968-05-29 1971-05-11 Scott Paper Co High solids coating composition
FR2392167A1 (fr) * 1977-05-23 1978-12-22 Protex Manuf Prod Chimiq Compositions de couchage du papier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515340A (en) * 1947-04-01 1950-07-18 Gardner Board & Carton Co Coated paperboard and method of makign same
FR1364193A (fr) * 1963-05-22 1964-06-19 Oxford Paper Co Procédé de fabrication de compositions de matières insolubles dans l'eau conformées à partir de matières organiques polymères solubles dans l'eau
GB1163842A (en) * 1965-09-27 1969-09-10 Mead Corp Process for Incoporating Additives in Paper and the Like
DE2144318A1 (de) * 1970-09-04 1972-03-09 Scott Paper Co., Delaware County, Pa. (V.StA.) Wäßrige wärmekoagulierbare Papierbeschichtungsmasse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Band 82, Nr. 12, 24. Marz 1975, Seite 97, Nr. 74731d Columbus, Ohio, U.S.A. & JP-B-46 020 277 (SEIKO CHEMICAL INDUSTRY CO., LTD.) 23-05-1974 * Zusammenfassung * *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0174859A3 (fr) * 1984-09-13 1987-08-19 Canon Kabushiki Kaisha Matériel pour l'enregistrement par jet d'encre et méthode
EP0192252A1 (fr) * 1985-02-22 1986-08-27 Institut für Papier-,Zellstoff-und Fasertechnik der Technischen Universität Graz Procédé d'amélioration du "holdout" des couleurs d'impression, laques et masses de revêtement sur des produits en feuille constitués de fibres et de désencrage des fibres ainsi que masse pour la mise en oeuvre du procédé et produits en feuille obtenus
EP0263519A3 (en) * 1986-10-08 1988-09-07 Institut Fur Papier-,Zellstoff-Und Fasertechnik Der Technischen Universitat Graz Means for improving the printability of paper and cardboard
EP0279313A1 (fr) * 1987-02-10 1988-08-24 Institut für Papier-,Zellstoff-und Fasertechnik der Technischen Universität Graz Procédé de fabrication d'un agent à base de pigments apte à l'industrie papetière, qui améliore la possibilité d'imprimer sur du papier ou du carton, l'agent et son utilisation

Also Published As

Publication number Publication date
DE2911679A1 (de) 1980-09-25
JPS55128099A (en) 1980-10-03
FI800896A7 (fi) 1980-09-25
DE2911679C3 (de) 1987-04-16
US4495029A (en) 1985-01-22
ATE886T1 (de) 1982-05-15
FI65642B (fi) 1984-02-29
DE2911679B2 (de) 1981-07-30
EP0016465B1 (fr) 1982-04-21
FI65642C (fi) 1984-06-11
EP0016465B2 (fr) 1986-08-06

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