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EP0016465B2 - Verfahren zum Herstellen von gestrichenem Papier und Karton und Streichmasse zur Durchführung des Verfahrens - Google Patents

Verfahren zum Herstellen von gestrichenem Papier und Karton und Streichmasse zur Durchführung des Verfahrens Download PDF

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Publication number
EP0016465B2
EP0016465B2 EP80101472A EP80101472A EP0016465B2 EP 0016465 B2 EP0016465 B2 EP 0016465B2 EP 80101472 A EP80101472 A EP 80101472A EP 80101472 A EP80101472 A EP 80101472A EP 0016465 B2 EP0016465 B2 EP 0016465B2
Authority
EP
European Patent Office
Prior art keywords
coating
weight
cardboard
coating composition
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80101472A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0016465A1 (de
EP0016465B1 (de
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6066351&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0016465(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Feldmuehle AG filed Critical Feldmuehle AG
Priority to AT80101472T priority Critical patent/ATE886T1/de
Publication of EP0016465A1 publication Critical patent/EP0016465A1/de
Application granted granted Critical
Publication of EP0016465B1 publication Critical patent/EP0016465B1/de
Publication of EP0016465B2 publication Critical patent/EP0016465B2/de
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 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
  • the coating mass "strikes through”.
  • the coating slip penetrates the substrate and builds up on the coater roller. This initially results in line errors and, if the paper web is heavily deposited, tears.
  • the coating system must be turned off and cleaned. The downtimes and the resulting scrap lead to increased production costs.
  • Striking 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 designed to prevent the coating compound from streaking 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 to be used to produce a flat amount of paper with unchanged 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 papers, strikethrough is largely avoided.
  • a process for the production of coated paper or cardboard which is characterized in that a coating slip is applied to a coating base paper or a coating base cardboard with a pH value ⁇ 6.5, the pH value of which is ⁇ 6, 5, in which the particles of the plastic dispersion carry a non-cationic charge and which contains one or more water-soluble, weakly cation-active monomeric substances from the group of the tertiary and quaternary, which does not impair their stability during the preparation and storage of the coating slip, in pH Area below 6.5 however becomes strongly cationic and that upon contact with the acidified paper or cardboard the coating slip solidifies at the interface with the base paper or cardboard. If the printout of the substance added to the coating slip is subsequently used, this means an amino compound.
  • 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 which are not so stable in their stability when added to a coating slip under the influence of a weakly cation-active substance that problem-free manufacture, storage and Further processing of the coating slip is no longer possible.
  • a weakly cation-active substance that problem-free manufacture, storage and Further processing of the coating slip is no longer possible.
  • 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 the coating slip solidifies 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.
  • weakly cationic substances 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 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 it comes into contact with an acid-produced paper, its national 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 value of ⁇ 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 usual way. If, however, the coating slip is applied to the surface of a coating base paper or coating base cardboard, 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, with water being usually eliminated, but it can also be a matter of converting the plastic dispersion into a non-reversible, gel-like state.
  • the coating compound will solidify due to the reduced stability of the plastic dispersion in the interface area.
  • the solidified coating slip acts as a quasi-barrier layer and prevents further penetration of the coating slip portion that does not coincide with the surface of the substrate Has come into contact as a result, has an unchanged pH value and its stability is not impaired.
  • a coating base paper or cardboard with a pH value between 4.5 and 6.0 has proven to be particularly advantageous. Coating base papers and cardboards are often produced in this pH range and can therefore be used in the process according to the invention without additional measures. However, 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 is 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 setting 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 must have the property of becoming strongly cationic at a pH ⁇ 6.5.
  • Monomeric, tertiary and quaternary amino compounds which are soluble in water and have alkyl, aryl or aralkyl radicals on the nitrogen atom have proven 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.
  • 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 an airbrush coating device on a coating base paper or cardboard in such an amount that the weight of the dried coating 10-12 g / m 2 . It shows that the coating slip penetrates less deeply into the substrate and that a larger amount of the coating remains on the surface and contributes to improving the quality.
  • the process according to the invention is particularly suitable for producing LWC papers. Its application avoids the feared streaking of the coating slip and enables a trouble-free coating process. 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 using the gravure printing process.
  • the improved quality is noticeable by the greatly reduced number of «missing dots» (tiny, unprinted places), which are in the Compared to the previously common coating methods.
  • 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 . 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 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.
  • 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 weight per unit area of 32-38 g / m 2 , preferably of 34-36 g / m 2 , with a knife coater on both sides, the weight of the dry coating 6 to 7 g / m 2 and side is.
  • the preparation of the coating slip is not subject to any particular restrictions, but it has proven to be expedient after the pigments have been dispersed in the alkaline range and the plastic or plastics has been added dispersions first add the cationic substance and then correct the pH.
  • Examples 1 to 5 are coating compositions according to the invention 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 in turn 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.
  • 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 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 produced, each but no solution of a cation-active substance is 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 / m2 and a surface 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 slip according to the example 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.
  • the coating slips according to Examples 1 to 8 no streaking through of the coating slip was observed over a two-hour test period, while in the tests with the coating slips according to Comparative Examples 1 and 2, streaking through and spreading of the coating rolls occurred.
  • FIGS. 1-3 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: the pressure of the squeeze rollers 4, 5 pushes the coating slip through the test track 12 and thereby produces more or less strong markings on a contrast material 16. The larger and more numerous 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.
  • 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 the 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 6 times the length of the contrast material 16a. This measure ensures that the markings on the contrast paper are reproduced in 6 times.
  • 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 4, 5.
  • the film web 11 and the impenetrable material web 13 are unwound from unwinding rolls 2 and 3.
  • the unwinding rolls 2 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, 5 to accommodate 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, as described, is wrapped with contrast paper, the test web 12 connected to the material web 13 and the film web 11 are introduced 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 which consists of eight different breakdown levels.
  • 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 commonly used in the paper and printing industry and was developed by the Center Technique de Industrie des Textils, Cartons et Celluloses, Grenoble, France.
  • the heliotest is used to determine the number of missing dots. Compared to the previously common 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 Verfahren zum Herstellen von gestrichenem Papier und Karton und Streichmasse zur Durchführung des Verfahrens Expired EP0016465B2 (de)

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 EP0016465A1 (de) 1980-10-01
EP0016465B1 EP0016465B1 (de) 1982-04-21
EP0016465B2 true EP0016465B2 (de) 1986-08-06

Family

ID=6066351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101472A Expired EP0016465B2 (de) 1979-03-24 1980-03-20 Verfahren zum Herstellen von gestrichenem Papier und Karton und Streichmasse zur Durchführung des Verfahrens

Country Status (6)

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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0174859A3 (en) * 1984-09-13 1987-08-19 Canon Kabushiki Kaisha Ink-jet recording medium and method
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
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
US6051106A (en) * 1996-03-22 2000-04-18 Nippon Paper Industries Co., Ltd. Cast-coated paper and production method thereof
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

Family Cites Families (9)

* 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
US2515340A (en) * 1947-04-01 1950-07-18 Gardner Board & Carton Co Coated paperboard and method of makign same
BE626416A (fi) * 1961-12-23
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
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
US3674726A (en) * 1970-09-04 1972-07-04 Scott Paper Co Paper coating composition coagulatable by heating
FR2392167A1 (fr) * 1977-05-23 1978-12-22 Protex Manuf Prod Chimiq Compositions de couchage du papier

Also Published As

Publication number Publication date
ATE886T1 (de) 1982-05-15
DE2911679A1 (de) 1980-09-25
FI65642B (fi) 1984-02-29
EP0016465A1 (de) 1980-10-01
US4495029A (en) 1985-01-22
DE2911679C3 (de) 1987-04-16
FI65642C (fi) 1984-06-11
FI800896A7 (fi) 1980-09-25
EP0016465B1 (de) 1982-04-21
DE2911679B2 (de) 1981-07-30
JPS55128099A (en) 1980-10-03

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