EP0017793A2 - Application d'une bande de papier non couché dans le procédé de rotogravure - Google Patents

Application d'une bande de papier non couché dans le procédé de rotogravure Download PDF

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Publication number
EP0017793A2
EP0017793A2 EP80101502A EP80101502A EP0017793A2 EP 0017793 A2 EP0017793 A2 EP 0017793A2 EP 80101502 A EP80101502 A EP 80101502A EP 80101502 A EP80101502 A EP 80101502A EP 0017793 A2 EP0017793 A2 EP 0017793A2
Authority
EP
European Patent Office
Prior art keywords
paper
weight
film
hydratable
forming
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
EP80101502A
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German (de)
English (en)
Other versions
EP0017793A3 (en
EP0017793B1 (fr
Inventor
Guido Dr. Dipl.-Phys. Dessauer
Karl Th. Dipl.-Ing. Rost
Dieter Ing.-Grad. Baumgarten
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
Publication of EP0017793A2 publication Critical patent/EP0017793A2/fr
Publication of EP0017793A3 publication Critical patent/EP0017793A3/de
Application granted granted Critical
Publication of EP0017793B1 publication Critical patent/EP0017793B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/26—Printing on other surfaces than ordinary paper
    • B41M1/36—Printing on other surfaces than ordinary paper on pretreated paper, e.g. parchment, oiled paper, paper for registration purposes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays

Definitions

  • the present invention relates to the use of an uncoated paper web in a rotogravure process with printing inks which contain water-immiscible solvents.
  • a good color level means that the printing ink is brief - i.e. between their application to the paper and their drying - does not strike away, but that the same color contours as they are applied to the paper are also present in the finished printed and dried paper. If the ink level is poor, on the other hand, the ink strikes the paper and spreads out in the paper, which leads to a non-uniform and fuzzy printed image. For black printed areas e.g. insufficient blackening is achieved and the printed image has a lower gloss, the uneven arrangement of. Fiber and filler can be seen in the micro area of the surface in the printed image.
  • DE-PS 828 478 suggests adding various minerals such as zeolite to the fibrous material or applying these minerals as a preparation to the paper surface in connection with starch or other binders. This is supposed to be done by the inside running channels of the minerals the entry of oil molecules or other hydraulic fluids are promoted.
  • discrete clay particles added as filler and distributed in the structure of the paper are intended to prevent the ink from bleeding due to their adsorption effect.
  • oil-adsorbing substances to improve the printing properties is also described in GB-PS 10 93 041. These are synthetically produced pigments with an amorphous structure that are used in the usual way as fillers.
  • Natural rotogravure papers differ from newsprint papers by the maximum possible amount of filler added to them. They generally have a higher proportion of cellulose and differ in their physical values, above all, by the considerably higher density and the higher smoothness which is achieved by the calendering process.
  • the object of the present invention is the use of a natural gravure paper that has a much better color balance than the previously known gravure paper and thus leads to a better printing result.
  • the invention uses a principle which the applicant has only recently proposed in the case of reproduction papers, albeit with a completely different objective. It is the coating of fibrous materials with hydratable, colloidal, film-forming clays, which is described in DE-PS 24 51 216 and DE-PS 26 08 239.
  • DE-PS 24 51 216 relates to a slave paper in which the hydratable, colloidal clays, or the fiber materials coated therewith, are contained as color acceptors for suitable dye precursors.
  • DE-PS 26 08 239 describes an image-receiving material for electrophotographic processes in which the hydratable, film-forming, colloidal clays act as adsorbents for the water-extractable pollutants, such as are released during the heat setting of clay particles.
  • the task at hand is achieved using an uncoated paper web for printing by rotogravure printing with printing inks containing water-immiscible solvents, the paper web being distributed over the cross section of the fibrous paper, Contains fibers that are wholly or partially coated with hydratable, film-forming colloidal clays and wherein the paper web contains further inorganic fillers, has a basis weight of 45 to 100 g / m 2 , a density between 0.95 and 1.2 g / cm 3 and has a smoothness of 600 to 1500 Bekk-sec.
  • the dewatering of the paper sheet leads to a more or less strong separation, whereby enrich the fillers on the top of the paper sheet.
  • the main reason for the better color level is, however, that the hydratable, film-forming, colloidal clays contain a considerable amount of bound water, which is not the case with the usual fillers.
  • This higher water content is due to the property of the film-forming, hydratable, colloidal clays to swell in water and to hold large amounts of water in the films formed.
  • This water cannot escape at the drying temperatures that are usually used in a paper machine and, since it is immiscible with the solvent of the gravure printing ink, in a way repels the printing ink. This is a short-term effect, but it is completely sufficient, since only a few fractions of a second pass from the application of the printed image to the evaporation of the volatile solvents in the drying device of the printing press at the high machine speeds mentioned.
  • a calendering closes on the drying process itself, wherein the paper web to a density of between 0.95 and 1, 2 g / cm 3 is compressed. This results in a Bekk smoothness of advantageously 600 to 1500 seconds.
  • the basis weight range is between 45 and 100 g / m 2 , the improvements achieved compared to the previously known gravure printing papers having a particularly strong effect in the particularly interesting basis weight range from 55 to 70 g / m 2 .
  • Such papers have proven to be particularly suitable for use in the rotogravure printing process, the fibrous materials of which are coated with montmorillonite-containing clays selected from the group of the bentonites, with an attapulgite or a sepiolite.
  • montmorillonite-containing clays selected from the group of the bentonites, with an attapulgite or a sepiolite.
  • insufficiently swelling clay materials from these groups have proven unsuitable since they do not have the ability to coat the fibers in a gel and film-like manner.
  • Such clay minerals added to the paper stock do not have a significant proportion of bound water after the paper web has dried, and their mode of action only corresponds to the usual pigment fillers.
  • a very special advantage lies in the use of natural gravure paper, the fibers of which are encased in a naturally occurring bentonite clay, the montmorrilonite mineral of which has a ratio of sodium and calcium ions between 40:60 to 60:40.
  • the strength and elasticity of the film enveloping the fibers are greatly improved in comparison with one.
  • a natural gravure paper is advantageously used, the fibers of which are coated with a colloidal, film-forming clay, in which ion exchange in the above-mentioned ratio has taken place by treatment with soda or sodium hydroxide solution.
  • the starting product for such a clay can be a 100% calcium bentonite.
  • a very particularly advantageous embodiment of the invention can be achieved by using a natural gravure paper, the fibers of which are encased by a colloidal, film-forming clay, the montmorillonite mineral contains up to 40% magnesium ions and the resection portion consists of sodium ions.
  • Such a clay is obtained from a 100% calcium bentonite by first converting it into a 100% sodium bentonite by treatment with sodium hydroxide solution or soda and then by adding a magnesium salt e.g. Magnesium sulfate or magnesium hydroxide is used to replace some of the sodium ions with magnesium ions. Excellent results were achieved with an ion ratio of 25:75 mg to Na ions.
  • a further improvement in the color status can be achieved by using a natural gravure printing paper in which organic water-soluble macromolecules are attached to the fibers that surround, swell and film-form.
  • Organic water-soluble macromolecules with a molecular weight between 5000 and 100,000 are preferred.
  • These substances, also known as polyglycols, are preferably used in bulk, e.g. after ion exchange of the clay slurry, advantageously 10% by weight of polyglycol are mixed in from a maximum of 10% solution. The film quality is not affected by their addition.
  • Another expedient embodiment provides the use of natural gravure paper, the fibers of which are coated with highly swellable and film-forming clays and in which an aqueous solution of a polyglycol is sprayed onto the web before the reel-up.
  • the amount to be added to the pulp suspension prior to sheet formation can be up to 20% by weight higher than the amount that can actually be detected in the paper, the difference between the amount used and the filler detectable in the paper being attributable to the losses which also occur in the paper production, Use of retention aids, usually occur.
  • Suitable fillers are kaolin, calcium carbonate, talc, titanium dioxide, barium sulfate, calcium sulfate, kaolin, calcium carbonate and talc having proven to be particularly suitable.
  • a further improvement can be achieved by using a paper whose fiber content consists of 20-25% by weight cellulose fibers and 75 to 80% by weight wood pulp fibers.
  • Kaolin and hydratable, colloidal, film-forming clays are advantageously added to such a fibrous material in such an amount that the finished paper contains 18 to 26% by weight of kaolin and 1.6 to 3.5% by weight of these clays, based on the total substance are.
  • the excellent printing results that can be achieved with such paper can be attributed, among other things, to the fact that the paper has the homogeneous surface already mentioned. It is a particular advantage that the clays enveloping the fibers do not require a binder or any other auxiliary substance to fix them. Rather, these clays have the advantageous property of being firmly bonded to the fibers by hydrogen bonding, and there is no impairment even when the polyglycols mentioned above are used.
  • Example 1 A paper is produced according to Example 1, but the sodium calcium bentonite used in Example 1 was replaced by a sodium magnesium bentonite with an Na: Mg ion ratio of 75:25 and the procedure was as in Example 1.
  • a pulp made of semi-bleached needle sulfate pulp with a pH of 7.2 and a freeness of 20 to 22 ° SR becomes a 7% by weight colloidal solution of a well-swollen, film-forming sodium attapulgite at a consistency of 3.5% by weight added. Both calculated as dry weight parts, 8.3 parts by weight of attapulgite per 100 parts by weight of pulp.
  • the mixture of attapulgite solution and cellulose fibers is mixed in the known manner with wood pulp fibers, 76 parts by weight of wood pulp accounting for 24 parts by weight of pulp (without attapulgite).
  • This mixture is adjusted to a pH of 4.6 with alum and, after dilution, in the usual way Paper web formed.
  • the dried and calendered paper has a basis weight of 62 g / m 2 and a density of 1.1 g / cm 3 and a Bekk smoothness of 1150 sec.
  • the fibrous material consists of 75.5 parts by weight of wood pulp and 24.5 Parts by weight of pulp. 1.8 parts by weight of attapulgite and 18 parts by weight of kaolin account for the total stock of the paper.
  • a paper is produced according to Example 3, but the attapulgite used in Example 3 is replaced by sepiolite.
  • a paper of 67 g / m 2 is obtained, which has a Bekk smoothness of 1000 sec at a density of 1.14 g / cm 3 and whose fiber composition consists of 24% by weight cellulose fibers and 76% by weight wood pulp fibers. Based on the total substance, the paper contains 18.5 parts by weight of kaolin and 1.7 parts by weight of sepiolite.
  • a half-bleached needle sulfate pulp is dissolved in the pulper at 4.8% consistency and pH 7 and ground to 23 ° SR.
  • the treated pulp is mixed in a mixing center with a splinter-free wood pulp of 76 ° SR in a ratio of 25:75% by weight and with a separately prepared slurry of kaolin and calcium carbonate.
  • the kaolin-calcium carbonate slurry consists of 70 parts by weight of kaolin and 30 parts by weight of calcium carbonate.
  • the suspension has a fiber to filler ratio of 71:29.
  • the dried and satinized paper has a basis weight of 60 g / m 2 , a density of 1.1 and a surface smoothness according to Bekk of 1100 seconds.
  • the ash content is 25%.
  • the paper webs described in Examples 1 to 5 and in the comparative example are printed on a rotogravure printing machine with printing ink containing toluene.
  • the black printed areas show a significantly higher blackening and a better color intensity.
  • the print image has a greater calm in depth and a better color gloss.
  • the paper web produced according to the comparative example which otherwise corresponds in its mechanical-technological values and its composition to the examples according to the invention, but the fibrous material of which does not have a coating of hydratable, film-forming, colloidal clays, shows a significantly poorer and more uneven print image.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Paper (AREA)
  • Cosmetics (AREA)
  • Colloid Chemistry (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Printing Methods (AREA)
EP80101502A 1979-04-06 1980-03-21 Application d'une bande de papier non couché dans le procédé de rotogravure Expired EP0017793B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2913941A DE2913941B1 (de) 1979-04-06 1979-04-06 Verwendung einer nichtgestrichenen Papierbahn im Rotationstiefdruckverfahren
DE2913941 1979-04-06

Publications (3)

Publication Number Publication Date
EP0017793A2 true EP0017793A2 (fr) 1980-10-29
EP0017793A3 EP0017793A3 (en) 1981-08-05
EP0017793B1 EP0017793B1 (fr) 1983-02-09

Family

ID=6067673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101502A Expired EP0017793B1 (fr) 1979-04-06 1980-03-21 Application d'une bande de papier non couché dans le procédé de rotogravure

Country Status (7)

Country Link
US (1) US4549930A (fr)
EP (1) EP0017793B1 (fr)
JP (1) JPS55142691A (fr)
AT (1) ATE2448T1 (fr)
CA (1) CA1133661A (fr)
DE (2) DE2913941B1 (fr)
FI (1) FI65641B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002710A1 (fr) * 1982-12-30 1984-07-19 Bern Luechtrath Charge pour un matériau de type papier ou carton et procédé de fabrication de tels matériaux
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

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5537486A (en) * 1990-11-13 1996-07-16 Empire Blue Cross/Blue Shield High-speed document verification system
CA2065121C (fr) * 1992-04-03 1997-06-24 Roger Boulanger Methode et appareil d'impression sur nappe fibreuse
DE4217779A1 (de) * 1992-05-29 1993-12-02 Sued Chemie Ag Streichpigment
US5545450A (en) 1992-08-11 1996-08-13 E. Khashoggi Industries Molded articles having an inorganically filled organic polymer matrix
US5582670A (en) 1992-08-11 1996-12-10 E. Khashoggi Industries Methods for the manufacture of sheets having a highly inorganically filled organic polymer matrix
US5453310A (en) 1992-08-11 1995-09-26 E. Khashoggi Industries Cementitious materials for use in packaging containers and their methods of manufacture
US5800647A (en) 1992-08-11 1998-09-01 E. Khashoggi Industries, Llc Methods for manufacturing articles from sheets having a highly inorganically filled organic polymer matrix
US5508072A (en) 1992-08-11 1996-04-16 E. Khashoggi Industries Sheets having a highly inorganically filled organic polymer matrix
US5830548A (en) 1992-08-11 1998-11-03 E. Khashoggi Industries, Llc Articles of manufacture and methods for manufacturing laminate structures including inorganically filled sheets
US5580624A (en) 1992-08-11 1996-12-03 E. Khashoggi Industries Food and beverage containers made from inorganic aggregates and polysaccharide, protein, or synthetic organic binders, and the methods of manufacturing such containers
US5928741A (en) 1992-08-11 1999-07-27 E. Khashoggi Industries, Llc Laminated articles of manufacture fashioned from sheets having a highly inorganically filled organic polymer matrix
CA2137347A1 (fr) 1992-08-11 1994-03-03 Per Just Andersen Contenants a prise hydraulique
US5660903A (en) 1992-08-11 1997-08-26 E. Khashoggi Industries Sheets having a highly inorganically filled organic polymer matrix
US5658603A (en) 1992-08-11 1997-08-19 E. Khashoggi Industries Systems for molding articles having an inorganically filled organic polymer matrix
US5506046A (en) * 1992-08-11 1996-04-09 E. Khashoggi Industries Articles of manufacture fashioned from sheets having a highly inorganically filled organic polymer matrix
US5830305A (en) 1992-08-11 1998-11-03 E. Khashoggi Industries, Llc Methods of molding articles having an inorganically filled organic polymer matrix
US5641584A (en) 1992-08-11 1997-06-24 E. Khashoggi Industries Highly insulative cementitious matrices and methods for their manufacture
US5851634A (en) 1992-08-11 1998-12-22 E. Khashoggi Industries Hinges for highly inorganically filled composite materials
US5631097A (en) 1992-08-11 1997-05-20 E. Khashoggi Industries Laminate insulation barriers having a cementitious structural matrix and methods for their manufacture
DK169728B1 (da) 1993-02-02 1995-01-23 Stein Gaasland Fremgangsmåde til frigørelse af cellulosebaserede fibre fra hinanden i vand og støbemasse til plastisk formning af celluloseholdige fiberprodukter
US5738921A (en) 1993-08-10 1998-04-14 E. Khashoggi Industries, Llc Compositions and methods for manufacturing sealable, liquid-tight containers comprising an inorganically filled matrix
KR20010021984A (ko) * 1997-07-18 2001-03-15 스페이스 씨. 슬레이터 충전재 물질을 포함하는 종이 제품
GB0020179D0 (en) * 2000-08-17 2000-10-04 Imerys Minerals Ltd Kaolin products and their use
JP3827619B2 (ja) * 2002-07-11 2006-09-27 株式会社トプコン 眼鏡レンズの光学特性測定方法及びレンズメータ

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1847326A (en) * 1928-01-28 1932-03-01 Lewis L Alsted Paper pulp and process of making same
BE492240A (fr) * 1948-11-18
US3227607A (en) * 1963-10-15 1966-01-04 Huber Corp J M Method of adding silica pigments to newsprint pulp to improve ink strike properties of the newsprint and pigment therefor
US3433704A (en) * 1965-12-16 1969-03-18 Engelhard Min & Chem Attapulgite clay paper filler and method of forming newsprint therewith
BE675084A (fr) * 1966-01-14 1966-04-03
JPS4987804A (fr) * 1972-12-28 1974-08-22
DE2451216C3 (de) * 1974-10-29 1979-01-11 Feldmuehle Ag, 4000 Duesseldorf Nehmerpapier für Vervielfältigungsverfahren und Verfahren zu seiner Herstellung
DE2608239C3 (de) * 1976-02-28 1979-08-02 Feldmuehle Ag, 4000 Duesseldorf Bildempfangsmaterial für elektrophotographische Verfahren und Verfahren zu seiner Herstellung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002710A1 (fr) * 1982-12-30 1984-07-19 Bern Luechtrath Charge pour un matériau de type papier ou carton et procédé de fabrication de tels matériaux
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

Also Published As

Publication number Publication date
CA1133661A (fr) 1982-10-19
EP0017793A3 (en) 1981-08-05
DE3036551A1 (de) 1981-10-01
JPS55142691A (en) 1980-11-07
FI65641B (fi) 1984-02-29
EP0017793B1 (fr) 1983-02-09
ATE2448T1 (de) 1983-03-15
US4549930A (en) 1985-10-29
DE3036551C2 (de) 1987-01-08
FI801066A7 (fi) 1980-10-07
DE2913941B1 (de) 1980-05-14

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