EP0016465B1 - 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
EP0016465B1
EP0016465B1 EP80101472A EP80101472A EP0016465B1 EP 0016465 B1 EP0016465 B1 EP 0016465B1 EP 80101472 A EP80101472 A EP 80101472A EP 80101472 A EP80101472 A EP 80101472A EP 0016465 B1 EP0016465 B1 EP 0016465B1
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EP
European Patent Office
Prior art keywords
coating
weight
coating composition
cardboard
process according
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Expired
Application number
EP80101472A
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German (de)
English (en)
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EP0016465A1 (fr
EP0016465B2 (fr
Inventor
Kurt Werner Dr. Dipl.-Chem. Bergmann
Popko Julius Westerhuis
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Feldmuehle AG
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Feldmuehle AG
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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
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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 method 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 base paper or cardboard and dried, and a coating slip for carrying out the method.
  • 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 strikethrough 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 penetrates the substrates only to a small extent.
  • LWC papers are intended to prevent the coating slip from striking through and to ensure a smooth and trouble-free coating process.
  • 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 produced using conventional coating color components, in particular conventional plastic dispersions and pigments, and which can be produced and processed with the usual equipment, but penetrates to a substantially lesser extent into the substrates and when used to coat LWC paper, strikethrough 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 nonionic 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 cation-active charge and also not those which, when added to a coating slip under the influence of a weakly cation-active substance, are impaired in their stability such that problem-free manufacture, storage and Further processing of the coating slip is no longer possible.
  • a sensitive disturbance in the degree of stabilization there is no need for coagulation of the coating slip, rather 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.
  • the substances which are added to the coating slip and only become strongly cation-active in the pH range below 6.5 generally have a weakly cation-active character even at higher pH values, and are therefore referred to below as weakly cationic substances.
  • the cationic effect emanating from them is so slight that it remains without any appreciable influence on the stability of the coating slips.
  • Their characteristic effect only occurs at an acidic pH. When it comes into contact with an acid-produced paper, its 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.
  • the mode of action can probably be explained as follows:
  • the substances added to the coating slip impair the stability of the coating slip adjusted to a pH> 6.5 initially not.
  • the production and processing of the coating slips are therefore not subject to any restrictions and can be carried out in the customary manner.
  • the coating slip is applied to the surface of a raw sterile paper or cardboard box, the surface of which has an acidic pH, the substances become strongly cationic and impair the degree of stabilization of the plastic binder used.
  • the reduced degree of stabilization of the plastic dispersion can be due both to complete coagulation in the interface area of the substrate and to the coating slip, water being usually eliminated, but it can also be a matter of converting the plastic dispersion into a non-reversible, gel-like state. In any case, it becomes due to the reduced stability of the plastic dispersion in the interface richly solidify the coating. In this interface area, the solidified coating slip acts as a quasi-barrier layer and prevents further penetration of the coating slip portion, which has not come into contact with the surface of the substrate, consequently has an unchanged pH value and its stability is not impaired.
  • 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 paper 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. With these dispersions, destabilization can be achieved particularly easily by the substance which becomes more cation-active in the acidic pH range.
  • 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 anion-active charge state of the particles is due to an anion-active 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 of substance which becomes strongly cationic in a pH range below 6.5, on the stability of the binder used and on 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.
  • an addition amount of 2 to 20 weight has 0 / o, based on the dry parts of the plastic dispersion, has proven in the coating composition.
  • the method according to the invention is characterized in that a coating slip 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 Is -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 producing 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 much better utilization of the machines and aggregates, which are costly to invest, creates a considerable economic advantage if the process is used while maintaining the previous basis weights of the base paper or the coat weight.
  • 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 common coating methods. In many cases, missing dots do not even occur if the coating weight is simultaneously reduced when using the coating method according to the invention in comparison with the methods previously used. This is a clear indication that the coating slip penetrates less deeply into the coating base paper 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.
  • the lower basis weight limit for LWC base papers was 36 g / m 2 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 shift the ratio of coating base paper and line coat weight beyond the previously existing limits and to better adapt the products 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. 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 rake coating device on both sides, the weight of the dry coating being 6 to 7 g / m 2 and side is.
  • a coating slip has proven 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 the following at a solids content of 45-62% by weight Composition has: where all parts by weight add up to 100 parts by weight.
  • 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 are 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 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.
  • the coating composition is / o diluted to a solids content of 50 wt 0 and adjusted to a pH of 8.7.
  • Example 1 1716 parts by weight of the solution used in Example 1 of tertiary dimethyl hexylammonium base are added to a mixture of pigment and plastic dispersion corresponding to 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 to which 1516 parts by weight of a 15.1% 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 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, 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%.
  • the coating slips according to Examples 1 to 4, 6 to 8 and Comparative Examples 1 and 2 are applied to a lightweight, wood-containing coating base paper with a basis weight of 39 g / m 2 and a surface on a test coating machine at a machine speed of 85 m / min with a rake coating device -pH of 4.8 spread on one side and dried as usual.
  • the weight of the dried coating is 11 g / m 2 .
  • a coating mast 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 and dried, the weight of the dried coating 6.5 g / m 2 and side is.
  • 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.
  • An initial marking 18 is placed on the test track 12, which lies directly in front of the line of contact of the two squeeze rollers 4, 5 and above the start of the contrast material 16a.
  • a black paper is used as contrast material 16a, which is glued to the nip roller 4 with its beginning.
  • the length of the contrast material 16a corresponds to the circumference of the squeeze roller 4.
  • the length of the test track 12 is selected such that it corresponds to 6 times the circumference of the squeeze roller 4 and thus to 6 times the length of the contrast material 16a. This measure ensures that the markings on the contrast paper are reproduced in 6-fold 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. This makes it possible to guide the test track past the end of the adhesive seam 14 through the ink sump without more markings appearing on the contrast material than correspond to the measured test length.
  • the width of the contrast material 16a is approximately 3 cm less than the width of the squeeze rollers 45.
  • the film web 11 and the impenetrable material web 13 are unwound from unwinding rolls 2 and 3.
  • the unwinding rolls 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 16a.
  • 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 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 able to be set 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.
  • test web 12 After roller 4 is wrapped with contrast paper as described, the test web 12 connected to the material web 13 and the film web 11 are inserted and the squeeze rollers 4, 5 are pressed together. A paint sump 17 is then formed from the coating slip. By actuating the hand crank 7, the test track 12 is guided through the ink sump in the measured length. The contrast material 16a is then removed and compared with an evaluation scale consisting of eight different breakdown levels.
  • 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 Kunststoff Kunststoffs, Cartons et Celluloses, Grenoble, France.
  • the heliotest is used to determine the number of missing dots. Compared to the previous one The usual deletion process results in a reduction of the missing dots of between 30 and 40%.

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  • Chemical Kinetics & Catalysis (AREA)
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Claims (14)

1. Procédé pour la fabrication de papier ou de carton couché, par lequel une pâte ou masse d'enduction ou de couchage aqueuse, comportant des particules d'au moins une matière plastique en dispersion aqueuse et de pigments inorganiques tels que la craie, le dioxyde de titane, le talc et le kaolin, est appliquée sur un papier ou un carton brut destiné au couchage et ensuite séchée, caractérisé en ce que:
- sur un papier ou carton brut, présentant un pH inférieur à 6,5, on applique une pâte ou masse d'enduction ou de couchage présentant un pH supérieur à 6,5,
- que les particules de la matière plastique en dispersion portent une charge ne présentant pas d'activité cationique, et
- que la pâte d'enduction ou de couchage contient une substance,

qui pendant la fabrication et le stockage de ladite pâte, ne compromet pas la stabilité de celle-ci, mais a cependant une forte activité cationique dans la gamme de pH inférieure à 6,5,
et que, en cas de contact avec le papier ou le carton à réglage acide, la pâte d'enduction ou de couchage se solidifie à la surface limite avec le papier ou le carton brut.
2. Procédé selon la revendication 1, caractérisé en ce que l'on utilise un papier ou carton brut destiné au couchage, dont le pH est compris entre 4,5 et 6,0.
3. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'on utilise un papier ou carton brut destiné au couchage, dont le pH a été réglé à une valeur de 4,5 à 6,0 par addition à la bouillie de fibres d'un composé de l'aluminium à l'acide sulfurique.
4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'on utilise un papier ou carton brut destiné au couchage, dont le pH a fait l'objet d'un réglage supplémentaire par addition d'acide sulfurique.
5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'on utilise une pâte d'enduction ou de couchage dont le pH est compris entre 7,5 et 11.
6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'on utilise une pâte d'enduction ou de couchage qui contient une matière plastique en dispersion, dont les particules portent une charge à activité anionique.
7. Procédé selon la revendication 6, caractérisé en ce que l'on utilise une pâte d'enduction ou de couchage, dans le cas de laquelle la charge à activité anionique de la matière plastique en dispersion est produite par des groupes anioniques de la molécule de matière plastique elle-même.
8. Procédé selon la revendication 6, caractérisé en ce que l'on utilise une pâte d'enduction ou de couchage, dans le cas de laquelle la charge à activité anionique de la matière plastique en dispersion est produite par des stabilisateurs ou des émulseurs.
9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'on utilise une pâte d'enduction ou de couchage, dont la substance à faible acitivité cationique est constituée par un ou plusieurs composés aqueux et solubles dans l'eau, qui sont choisis dans le groupe des composés aminés tertiaires et quaternaires.
10. Procédé selon la revendication 9, caractérisé en ce que l'on utilise une pâte d'enduction ou de couchage qui contient la substance à faible activité cationique, en une quantité qui est égale à 2 à 20 parties en poids de matière solide, rapporté à 100 parties en poids de substance sèche de la matière plastique en dispersion.
11. Procédé pour la fabrication de papier et de carton couché selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'une pâte ou masse d'enduction ou de couchage, présentant une teneur en matières solides de 30 à 35 pour cent en poids, est appliquée et séchée, sur une face, sur un papier ou carton brut destiné au couchage, et ce au moyen d'un dispositif à coucher à lame d'air et en une quantité telle que le poids de l'enduit de couchage séché soit de 10 à 12 g/m2.
12. Procédé pour la fabrication de papier couché selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la pâte d'enduction ou de couchage, qui présente une teneur en matières solides de 45 à 62% en poids, est appliquée et séchée sur les deux faces sur un papier brut destiné au couchage, contenant du bois et dont le grammage est compris entre 32 et 38 g/m2, et ce au moyen d'un dispositif à coucher à râcle, et en ce que le poids de l'enduit de couchage séché est de 6 à 7 g/m2 et par face.
13. Procédé selon la revendication 12, caractérisé en ce que l'on utilise un papier brut destiné au couchage, contenant du bois et dont le grammage est de 34 à 36 g/m2.
14. Pâte ou masse d'enduction ou de couchage destinée à la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 10 et 12-13, caractérisée en ce qu'elle est réglée à une valeur de pH de 8,1 à 10,1 et présente, pour une teneur en matières solides de 45 à 61 % en poids, la composition suivante:
3 à 12 parties en poids d'une matière plastique en dispersion à activité anionique, calculé comme parties en poids à sec, jusqu'à 95 parties en poids de pigments minéraux,
0,1 à 5 parties en poids d'une substance à faible activité cationique, soluble dans l'eau, calculé comme parties en poids à sec, et
jusqu'à 3 parties en poids d'adjuvants divers, tels que des agents de dispersion, des agents anti-mousse et des produits épaissisants,

toutes les quantités indiquées formant un total de 100 parties en poids à sec.
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
DE2911679 1979-03-24
DE2911679A DE2911679B2 (de) 1979-03-24 1979-03-24 Verfahren zum Herstellen von gestrichenem Papier und Karton und Streichmasse zur Durchführung des Verfahrens

Publications (3)

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

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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) DE2911679B2 (fr)
FI (1) FI65642C (fr)

Families Citing this family (12)

* 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
DE3506278A1 (de) * 1985-02-22 1986-08-28 Inst Zellstoff & Papier Verfahren zur verbesserung des holdouts von druckfarben, lacken und beschichtungsmassen auf flaechengebilden aus fasern sowie masse zur durchfuehrung des verfahrens und damit erzeugte flaechengebilde
FI72771C (fi) * 1985-03-14 1987-07-10 Kemira Oy Belaeggningspasta foer papper eller kartong och dispergeringsblandning foer pigment.
DE3634277A1 (de) * 1986-10-08 1988-04-21 Inst Zellstoff & Papier Mittel zur verbesserung der bedruckbarkeit von papier und karton
DE3703957A1 (de) * 1987-02-10 1988-08-18 Inst Zellstoff & Papier Verfahren zur herstellung eines fuer die papier- und kartonindustrie geeigneten, die bedruckbarkeit von papier und karton verbessernden mittels auf pigmentbasis, das mittel und seine verwendung
SE8800660L (sv) * 1988-02-26 1989-08-27 Bilsom Ab Saett och medel foer ytbehandling av fiberinnehaallande, vaesentligen oorganiskt material
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Publication number Publication date
FI65642B (fi) 1984-02-29
FI65642C (fi) 1984-06-11
DE2911679A1 (de) 1980-09-25
ATE886T1 (de) 1982-05-15
DE2911679B2 (de) 1981-07-30
DE2911679C3 (fr) 1987-04-16
FI800896A (fi) 1980-09-25
EP0016465A1 (fr) 1980-10-01
JPS55128099A (en) 1980-10-03
EP0016465B2 (fr) 1986-08-06
US4495029A (en) 1985-01-22

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