EP0713548B1 - Papier ou carton pourvu d'un revetement applique par couchage a haut brillant, procede de fabrication et utilisation - Google Patents

Papier ou carton pourvu d'un revetement applique par couchage a haut brillant, procede de fabrication et utilisation Download PDF

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Publication number
EP0713548B1
EP0713548B1 EP94926127A EP94926127A EP0713548B1 EP 0713548 B1 EP0713548 B1 EP 0713548B1 EP 94926127 A EP94926127 A EP 94926127A EP 94926127 A EP94926127 A EP 94926127A EP 0713548 B1 EP0713548 B1 EP 0713548B1
Authority
EP
European Patent Office
Prior art keywords
weight
coating
paper
parts
pigment
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 - Lifetime
Application number
EP94926127A
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German (de)
English (en)
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EP0713548A1 (fr
Inventor
Werner Bergmann
Paul-Heinz DÄHLING
Peter Pfeifer
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.)
Stora Publication Paper AG
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Stora Publication Paper AG
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Filing date
Publication date
Application filed by Stora Publication Paper AG filed Critical Stora Publication Paper AG
Publication of EP0713548A1 publication Critical patent/EP0713548A1/fr
Application granted granted Critical
Publication of EP0713548B1 publication Critical patent/EP0713548B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D21H19/54—Starch
    • 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
    • D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds

Definitions

  • the invention relates to a paper or a cardboard with a coating applied by means of the coating process, which is formed from a mineral pigment, latex, a starch derivative and an aqueous composition comprising casting coating aids known per se in the usual amount.
  • the invention also relates to a method for producing the specified paper or cardboard and its use.
  • JP-A-52 / 137,015 relates to a coating color which may contain casein and which, in order to improve the printability, contains a reaction product of an epihalohydrin with an aliphatic amine.
  • the use of the coating color described in a cast coating process and the use of kaolin as a pigment component are not disclosed.
  • US-A-3,607,331 discloses the use of crosslinking aids in coating compositions containing starch as binders, but without specifying the application of the coating compositions disclosed for the casting coating process.
  • DE-26 19 848 A1 discloses a non-proteinaceous binder composition for the cast coating of paper, in which the binder composition comprises modified starch and two carboxylated styrene-butadiene latices, which differ in their degree of carboxylation.
  • a pigment mixture given by way of example consists of 85 parts made of calcium carbonate and about 15 parts of a coating clay.
  • the known composition may contain a pentaerythritol ester resin and the dispersing and separating agents which are customary per se.
  • DE-26 19 848 A1 aims to replace casein as the main binder component for coating colors to be processed in the coating process and thus to avoid its disadvantages, in particular the high costs and the limited availability. At the same time, however, both a good release property of the dried coating color from the high-gloss cylinder and a high-quality paper sheet which has excellent printability, sheet gloss and water resistance should be achieved.
  • DE-23 02 044 C2 also refers to the disadvantages of using casein as a binder and therefore provides for a mixture of two latices as a binder, one latex not being alkali-soluble or swellable and the other latex being alkali-swellable or soluble.
  • the aqueous coating mass must be kept at a pH of ⁇ 7.0 and the coated paper web must be conveyed in cast-holding rollers with a chrome-plated surface which contain a bath of boiling water.
  • the coating composition applied to the paper web is first partially dried, but no gelation occurs and fed to the casting holding drum filled with boiling water while the paper web is pressed against the surface of the casting holding drum with a pressure roller. A water bath forms in the nip formed between the casting holding drum and the pressure roller.
  • casein as a natural product is subject to not inconsiderable quality fluctuations.
  • Another disadvantage of casein is its sensitivity to bacteria.
  • the qualitative requirements for cast-coated papers or cardboard types have become ever stricter; in particular, good wet scrub resistance and good gloss retention are required to an ever increasing extent. The demands made are to be seen from the point of view of changed printing techniques as well as modern warehousing and sales methods.
  • a cast-coated paper printed with aqueous or water-thinnable flexographic printing inks has a sufficiently high printing ink adhesion.
  • the binders made of latex to be used according to the invention with a glass transition temperature> 18 ° C. and a starch ether are excellently crosslinked by the addition of the crosslinking aids to be used according to the invention, so that in cooperation with the pigments provided according to the invention, a cast line is produced with excellent adhesion to the surface of paper or cardboard. who has excellent ink adhesion, especially of aqueous or water-thinnable inks.
  • the coating color is not impaired by heating the coating ink sump when the web enters the high-gloss cylinder.
  • a further advantage when using the crosslinking aids to be used according to the invention results from the fact that no harmful vapors escape, as z. B. in formaldehyde-releasing crosslinking agents during the Drying process is the case.
  • the pigment present in the coating contains up to 30 parts by weight of precipitated calcium carbonate, satin white, aluminum hydroxide, titanium dioxide or a mixture of these pigments, the mixture components adding up to a total of 100 parts by weight of pigment.
  • a hydroxypropyl starch ether has proven to be particularly suitable, in particular a hydroxypropyl starch ether with a degree of substitution ⁇ 0.2. However, a hydroxypropyl starch ether with a degree of substitution of 0.04 to 0.12 is very particularly preferred.
  • An aliphatic epoxy resin is particularly preferred as the crosslinking aid, in particular an epoxy resin based on bisphenol A and F and epichlorohydrin.
  • a butadiene-styrene latex containing carboxyl groups has proven to be a latex, furthermore a copolymer of acrylic acid esters with other vinyl compounds or a mixture of these two types of latex.
  • the glass transition temperature of the latex or the latex mixture is preferably in the range from 24 to 30 ° C. and the latex has a minimum film-forming temperature of 20 ° C.
  • a coating base paper or a coating base card that is only smoothed by satin coating can be used as the substrate for the application of the cast coating layer, but a coating base provided with a primer can also be used.
  • the minimum application weight of the cast coating layer is also 12 g / m 2 in the case of a pre-coated coating medium, if an uncoated coating medium is used, the coating can be applied up to a basis weight of 27 g / m 2 , application weights of 20 to are particularly preferred 25 g / m 2 .
  • the coatings according to the invention have a gloss (according to Gardener, angle 20 °) of 58 to 68%.
  • the coating according to the invention may also contain as coating additives, dispersing and wetting agents, release agents such as the stearates of sodium and calcium, oils, in particular Turkish red oil, optical brighteners, shading dyes, thickening aids, e.g. B. based on an alkali-soluble acrylate, defoamers and agents for regulating the pH, these G confusestreichilfsstoff in a total of 2 to 4 parts by weight, based on 100 parts by weight of pigment of the coating are present.
  • coating additives dispersing and wetting agents, release agents such as the stearates of sodium and calcium, oils, in particular Turkish red oil, optical brighteners, shading dyes, thickening aids, e.g. B. based on an alkali-soluble acrylate, defoamers and agents for regulating the pH, these G confusestreichilfsstoff in a total of 2 to 4 parts by weight, based on 100 parts by weight of pigment of the coating are present.
  • the process for producing the cast-coated paper according to the invention in which a composition is applied to a paper or cardboard web to form a coating, leveled and contacted with a heated high-gloss cylinder with simultaneous drying to form a high-gloss line, is characterized in that: the composition comprises a pigment consisting of 70 to 100 parts by weight of coating kaolin and / or talc; the composition as a binder - based on 100 parts by weight of pigment - 10 to 14 parts by weight of latex with a glass transition temperature> 18 ° C. 6 to 10% by weight of starch ether and 0.5 to 3.5 parts by weight of epoxy resin contains.
  • the invention is based on the so-called "direct method", i. H. the casting process, in which the material web provided with the leveled but still wet line is brought into contact with the heated surface of a high-gloss cylinder.
  • the so-called rewet method and the gelation method are not covered by the present invention.
  • the pigment present in the composition additionally contains up to 30% by weight of precipitated calcium carbonate, satin white, Contains aluminum hydroxide and titanium dioxide or a mixture of these pigments, with the mixture components adding up to a total of 100 parts by weight of pigment.
  • the temperature of the high-gloss cylinder is preferably kept in the range from 75 ° C. to ⁇ 100 ° C.
  • the coating colors for forming the coating according to the invention are adjusted to a pH> 8, preferably to ⁇ 12.
  • the viscosities range from 2,000 to 8,000 mPas, measured with a Brookfield viscometer at 100 rpm and spindles 4 to 6 depending on the degree of viscosity.
  • the paper or cardboard according to the invention can be used for printing with aqueous or water-dilutable printing inks, in particular the use for printing with aqueous or water-dilutable flexographic printing inks is preferred.
  • a butadiene styrene latex having a glass transition temperature of 24 ° C. and a minimum film-forming temperature of 20 ° C. is added in an amount of 12 parts by weight, calculated as parts by dry weight, based on the pigment.
  • 1.2 parts by weight of calcium stearate and 1 part by weight of a wetting agent are mixed in.
  • the coating color is adjusted to a pH of 8.6.
  • the finished coating color has a solids content of 57% by weight.
  • the dried paper can be easily detached from the high-gloss cylinder.
  • the gloss measurement (according to Gardener at an angle of 20 °) gave a value of 63%.
  • an aqueous flexographic printing ink was applied to a sample of the paper according to the invention using a hand-held applicator - as it is manufactured under the name Hand-Proofer by Pamarco Inc. Rosell NJ - and the "printed" samples immediately after application 10 Min. In a drying cabinet at 100 ° C.
  • the printed test paper is immersed in a water bath for a) 1 min., B) 10 min.
  • a white cotton cloth soaked in water for 1 minute is stretched around the weight of the scrubbing sled.
  • the 1 minute watered sample is loaded with 100 double strokes and the 10 minute watered sample with 25 double strokes of the scrubbing slide.
  • Fig. 1 shows almost completely intact samples of the paper according to the invention both after 1 and after 10 minutes of washing, with no discoloration of printing ink on the test report attached cotton rags can be seen. As a result, the cotton flaps are not visible on copies of the test report, see Fig. 1.
  • an examination of a cast-coated paper using casein shows a very low ink adhesion and consequently a strong staining of the cotton flap, see FIG. Fig. 2.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Glass Compositions (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Valve Housings (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (15)

  1. Papier ou carton pourvu d'un revêtement appliqué par couchage, revêtement constitué d'une composition aqueuse comprenant un pigment minéral, du latex, un dérivé d'amidon, ainsi que des adjuvants de couchage connus, en quantités usuelles, le revêtement par couchage étant caractérisé par la combinaison des caractéristiques suivantes :
    - le pigment est constitué de 70 à 100 parties en poids de kaolin d'enduction et/ou de talc;
    - le revêtement par couchage renferme comme liant, les quantités suivantes calculées sur 100 parties en poids de pigment :
    de 10 à 14 parties en poids de latex ayant une température de transition vitreuse supérieure à 18°C,
    de 6 à 10 parties en poids d'éther d'amidon,
    de 0,5 à 3,5 parties en poids d'un ou plusieurs adjuvants de mouillage choisis dans le groupe formé par une résine de polyamine épichlorhydrine, d'une résine de polyamide épichlorhydrine, d'une résine époxy et d'une résine de polyisocyanate.
  2. Papier ou carton selon la revendication 1, caractérisé par le fait que le pigment comprend en outre jusqu'à 30 parties en poids de carbonate de calcium précipité, du blanc satin, de l'hydroxyde d'aluminium, du dioxyde de titane ou un mélange de ces pigments, les constituants du mélange formant ensemble au total 100 parties en poids du pigment.
  3. Papier ou carton selon la revendication 1 ou 2, caractérisé par le fait que l'éther d'amidon est un éther d'hydroxypropylamidon.
  4. Papier ou carton selon l'une des revendications 1 à 3, caractérisé par le fait que l'éther d'hydroxypropylamidon a un degré de substitution inférieur à 0,2.
  5. Papier ou carton selon l'une des revendications 1 à 4, caractérisé par le fait que l'éther d'hydroxypropylamidon présente un degré de substitution allant de 0,04 jusqu'à 0,12.
  6. Papier ou carton selon l'une des revendications 1 à 5, caractérisé par le fait que la résine époxy est une résine époxy aliphatique.
  7. Papier ou carton selon l'une des revendications 1 à 5, caractérisé par le fait que la résine époxy est un produit de réaction à base de bisphénols A et F et d'épichlorhydrine.
  8. Papier ou carton selon l'une des revendications 1 à 7, caractérisé par le fait que le latex est un latex de butadiène-styrène renfermant des groupes hydroxyle, un polymère mixte d'ester d'acide acrylique avec d'autres composés vinyliques ou un mélange de ces deux types de latex.
  9. Papier ou carton selon l'une des revendications 1 à 8, caractérisé par le fait que le latex présente une température de transition vitreuse allant de 24 à 30°C et une température minimale de formation de film de 20°C.
  10. Papier ou carton selon l'une des revendications 1 à 9, caractérisé par le fait que le revêtement obtenu par couchage est appliqué sur une feuille continue de papier ou de carton préenduite et lissée par satinage.
  11. Procédé de préparation d'un papier ou carton pourvu d'un revêtement appliqué par couchage, selon l'une des revendications 1 à 10, procédé selon lequel afin d'obtenir le revêtement par couchage, on applique une composition sur une feuille continue de papier ou de carton, on égalise et on la met au contact d'un cylindre finement poli, chauffé avec séchage simultané, afin d'obtenir un couchage finement poli, procédé caractérisé par le fait que :
    la composition renferme un pigment constitué de 70 à 100 parties en poids de kaolin pour couchage et/ou de talc;
    la composition renferme en tant que liant, calculé sur 100 parties en poids de pigment,
    de 10 à 14% en poids de latex présentant une température de transition vitreuse supérieure à 18°C,
    de 6 à 10% en poids d'éther d'amidon, et
    de 0,5 à 3,5 parties en poids de résine époxy.
  12. Procédé selon la revendication 11, caractérisé par le fait que le pigment renferme en outre jusqu'à 30% en poids de carbonate de calcium précipité, du blanc satin, de l'hydroxyde d'aluminium et du dioxyde de titane ou un mélange de ces pigments, les constituants du mélange formant ensemble au total 100 parties en poids du pigment.
  13. Procédé selon la revendication 11 ou 12, caractérisé par le fait que la température du cylindre finement poli est maintenue entre 75°C et une température inférieure à 100°C.
  14. Utilisation d'un papier ou carton pourvu d'un revêtement appliqué par couchage, selon l'une des revendications 1 à 10, pour l'impression au moyen de colorants d'impression aqueux ou diluables à l'eau.
  15. Utilisation d'un papier ou carton pourvu d'un revêtement appliqué par couchage, selon l'une des revendications 1 à 10 et 14, pour l'impression avec des colorants aqueux ou diluables à l'eau, utilisables pour l'impression par flexographie.
EP94926127A 1993-08-14 1994-07-29 Papier ou carton pourvu d'un revetement applique par couchage a haut brillant, procede de fabrication et utilisation Expired - Lifetime EP0713548B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4327366A DE4327366C1 (de) 1993-08-14 1993-08-14 Papier oder Karton mit einer im Gußstreichverfahren aufgebrachten Beschichtung, Verfahren zur Herstellung und Verwendung
DE4327366 1993-08-14
PCT/EP1994/002509 WO1995005505A1 (fr) 1993-08-14 1994-07-29 Papier ou carton pourvu d'un revetement applique par couchage a haut brillant, procede de fabrication et utilisation

Publications (2)

Publication Number Publication Date
EP0713548A1 EP0713548A1 (fr) 1996-05-29
EP0713548B1 true EP0713548B1 (fr) 1997-04-16

Family

ID=6495211

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94926127A Expired - Lifetime EP0713548B1 (fr) 1993-08-14 1994-07-29 Papier ou carton pourvu d'un revetement applique par couchage a haut brillant, procede de fabrication et utilisation

Country Status (7)

Country Link
EP (1) EP0713548B1 (fr)
JP (1) JPH09501745A (fr)
AT (1) ATE151828T1 (fr)
DE (2) DE4327366C1 (fr)
ES (1) ES2102875T3 (fr)
FI (1) FI960603A (fr)
WO (1) WO1995005505A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7758690B2 (en) 2002-05-03 2010-07-20 Imerys Minerals, Ltd. Paper coating pigments

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19526278A1 (de) * 1995-07-19 1997-01-23 Bayer Ag Steichmassen mit Polyisocyanaten
DE19537427C1 (de) * 1995-10-07 1997-02-27 Feldmuehle Ag Stora Papier mit einer im Gußstreichverfahren aufgebrachten Beschichtung
DE19644014C2 (de) * 1996-10-31 1999-07-22 Stora Publication Paper Ag Papier mit Aufzeichnungsschicht und Verfahren zu seiner Herstellung
DE19706574C2 (de) * 1997-02-20 1999-07-08 Stora Publication Paper Ag Papier mit einer im Gußstreichverfahren aufgebrachten Beschichtung, Verfahren zu seiner Herstellung und seine Verwendung
DE19745935C2 (de) * 1997-10-17 2001-12-13 Mitsubishi Hitec Paper Bielefe Papier mit Tintenstrahlaufzeichnungsschicht
DE19755724C1 (de) * 1997-12-15 1999-06-24 Zanders Feinpapiere Ag Mattes gußgestrichenes Papier und Verfahren zu seiner Herstellung
JP4315695B2 (ja) * 2003-02-03 2009-08-19 富士ゼロックス株式会社 電子写真用転写用紙および電子写真用転写用紙の製造方法
CN1836072A (zh) * 2003-08-11 2006-09-20 特种制纸株式会社 耐油性片状物
AU2016238448B2 (en) * 2015-03-23 2021-06-24 Stora Enso Oyj Inkjet ink receptive coating comprising esterified or etherified starch and an inorganic mineral
FR3065223B1 (fr) * 2017-04-18 2019-07-05 Societe Bic Encre effacable a sec a temps de sechage amelioree

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1904260A1 (de) * 1968-02-08 1969-11-27 Cons Papers Inc Waessrige Papierueberzugsmasse
US3607331A (en) * 1968-06-03 1971-09-21 Dow Chemical Co Clay-starch paper coating compositions
BE793933A (fr) * 1972-01-14 1973-07-12 Scott Paper Co Composition aqueuse de couchage a adhesif pur latex
GB1514428A (en) * 1975-05-05 1978-06-14 Champion Int Corp Starch/latex cast coatings for paper
US4109056A (en) * 1975-05-05 1978-08-22 Champion International Corporation Starch/latex cast coatings for paper
JPS52137015A (en) * 1976-05-06 1977-11-16 Honshu Paper Co Ltd Paper coating composition
JPS59216996A (ja) * 1983-05-18 1984-12-07 神崎製紙株式会社 キャスト塗被紙の製造方法
KR920002988B1 (ko) * 1988-03-02 1992-04-11 미쓰이 도오아쓰 가가쿠 가부시키가이샤 도료조성물과 이것을 피복시킨 캐스트코우트지(Cast-coated Paper)
JP3038409B2 (ja) * 1990-07-31 2000-05-08 三井化学株式会社 キャストコート紙用塗料組成物
DE4139386C1 (fr) * 1991-11-29 1993-04-22 Stora Feldmuehle Ag, 4000 Duesseldorf, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7758690B2 (en) 2002-05-03 2010-07-20 Imerys Minerals, Ltd. Paper coating pigments

Also Published As

Publication number Publication date
FI960603A0 (fi) 1996-02-09
EP0713548A1 (fr) 1996-05-29
ATE151828T1 (de) 1997-05-15
ES2102875T3 (es) 1997-08-01
DE4327366C1 (de) 1995-01-05
JPH09501745A (ja) 1997-02-18
DE59402458D1 (de) 1997-05-22
WO1995005505A1 (fr) 1995-02-23
FI960603A (fi) 1996-02-14

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