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EP0671506B1 - Papier oder Karton - Google Patents

Papier oder Karton Download PDF

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Publication number
EP0671506B1
EP0671506B1 EP95102711A EP95102711A EP0671506B1 EP 0671506 B1 EP0671506 B1 EP 0671506B1 EP 95102711 A EP95102711 A EP 95102711A EP 95102711 A EP95102711 A EP 95102711A EP 0671506 B1 EP0671506 B1 EP 0671506B1
Authority
EP
European Patent Office
Prior art keywords
paper
cardboard
styrene
coat
butadiene
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
EP95102711A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0671506A2 (de
EP0671506A3 (de
Inventor
Bernhard Dettling
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.)
Dettling Bernhard
Original Assignee
Dettling Bernhard
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
Application filed by Dettling Bernhard filed Critical Dettling Bernhard
Publication of EP0671506A2 publication Critical patent/EP0671506A2/de
Publication of EP0671506A3 publication Critical patent/EP0671506A3/de
Application granted granted Critical
Publication of EP0671506B1 publication Critical patent/EP0671506B1/de
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
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • D21H19/826—Paper comprising more than one coating superposed two superposed coatings, the first applied being pigmented and the second applied being non-pigmented
    • 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
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/18—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising waxes
    • 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
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/385—Oxides, hydroxides or carbonates
    • 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
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D21H19/40—Coatings with pigments characterised by the pigments siliceous, e.g. clays
    • 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
    • D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • D21H19/80—Paper comprising more than one coating
    • D21H19/84—Paper comprising more than one coating on both sides of the substrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1379—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1379—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
    • Y10T428/1383—Vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit is sandwiched between layers [continuous layer]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24851—Intermediate layer is discontinuous or differential
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24934—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including paper layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/27—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
    • Y10T428/273—Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.] of coating
    • Y10T428/277—Cellulosic substrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y10T428/31895—Paper or wood
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y10T428/31895—Paper or wood
    • Y10T428/31906—Ester, halide or nitrile of addition polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31924—Including polyene monomers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31931—Polyene monomer-containing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31935—Ester, halide or nitrile of addition polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31971—Of carbohydrate
    • Y10T428/31993—Of paper

Definitions

  • the invention relates to paper or cardboard with a coating consisting of primer and top coat to create an aroma and vapor barrier.
  • Papers or boxes coated in this way to create an aroma and vapor barrier have a variety of uses.
  • the papers or cartons so formed are used, for example, as giant wrapping paper with moisture protection, heat-sealable packaging paper for the production of armored packaging for paper rolls, packaging paper with moisture protection, packaging material for food, aroma protection packaging, packaging for liquid Food, packaging for bulk goods, washing powder packaging, insulation paper for the construction industry, wallpaper paper and as a problem-free material in the recycling process.
  • What is required of the paper or cardboard while maintaining all the essential advantages of these papers or cardboard is a sufficient vapor and aroma density that they continue to be food-safe and continue to be oil and fat repellent.
  • they must be tasteless and odorless, bondable with special adhesives, sealable against themselves and other plastic coatings.
  • PVDC polyvinyldenchloride
  • vapor and aroma barriers have been achieved by coatings which are a mixture of several, preferably three, polymers, namely paraffin, carboxylated styrene butadiene as well as polyarcylate (EP-A-0 393 451).
  • the disadvantage of this coating is that the coating slip can contain a great deal of wax in order to achieve the necessary vapor and aroma barrier. This expenditure of additional material means higher costs, as well as problems with recycling and heat sealing.
  • DE-A-42 27 184 discloses an impregnating agent for the production of papers for achieving penetration resistance against fats, oils and aqueous media. Surface sizing takes place, in particular by means of a size press in the paper machine. However, the penetration resistance achieved with these processes is only slight and is in no way a vapor barrier.
  • the invention is based on the object to provide an improved paper or an improved box of a group consisting of primer and top coat coating to create an aroma and vapor barrier.
  • the primer in the coating slip consists of the components water, amorphous silicon dioxide, aluminum oxide, polyvinyl alcohol and a copolymer of styrene-butadiene and acrylonitrile or of the components water, silica or precipitated silica, polyvinyl alcohol and a copolymer of styrene butadiene and acrylonitrile.
  • the idea of the invention consists in a very special combination coat for creating the barrier in the sense of a synergetic effect, namely as a step essential to the invention, the linking of the special primer according to the invention with already known barrier coat coats as a top coat.
  • the primers described improve the properties of these top coats, which have so far been used insufficiently, and achieve with regard to the total coat weight with conventional ones PE coatings have comparable barrier values.
  • the primer according to the invention penetrates almost completely into the surface area of the paper or cardboard.
  • the special selection of the individual components in the primer guarantees a saturation of the capillary fiber structure of the paper or cardboard after the polymerization and fills absorption-promoting spaces or covers them with an amorphous network structure.
  • the openings remaining in the primer are sufficient to anchor the top coat well, effectively preventing it from kicking away. It is thus achieved that the aqueous components necessary for optimal polymerization remain in the top coat mass long enough and an improved arrangement of the film-forming molecules is produced.
  • the essence of the invention is thus that, in order to achieve the required barrier, an arbitrary top coat which creates a vapor barrier is applied to a special primer of the invention.
  • a barrier effect from the primer alone cannot be measured in accordance with DIN 53122 Klima D (over 135 g / m 2 / 24h).
  • the primer almost completely prevents the migration of polymer dispersions of the top coat into the paper or cardboard. This results in improved crosslinking and thus a denser film build-up, as well as the reduction in the amount of application required, which results in a thin layer thickness.
  • the combination coat according to the invention with a specific primer coat and with a further top coat suitable for producing a vapor barrier has all the essential advantages of the previous PE-coated papers or cartons and thus represents a full substitute for these.
  • Papers and cardboard are food-safe, oil and grease repellent, tasteless and odorless, can be glued with special adhesives, sealable against themselves and other plastic coatings.
  • the papers or cardboard boxes according to the invention can be easily recycled and have a relatively low application weight.
  • the return of the papers or cardboard boxes according to the invention to the material cycle is much easier and therefore less expensive.
  • the high barrier layer values already achieved with relatively low application weights mean that resources can be saved in comparison with the previous coating processes, in particular also in comparison with the PE coatings.
  • the papers or boxes coated by the method according to the invention are dependent on the respective certification of the top coat component (s) used and their layer thickness as ream wrapping paper with moisture protection, heat-sealable packaging paper for the production of armored packaging for paper rolls, packaging paper with moisture protection, packaging material for food, aroma protection packaging, packaging for liquid food, packaging for bulk goods, washing powder packaging, insulation paper for the construction industry, Wallpaper papers etc. can be used.
  • the primer also contains starch.
  • the application amount of the primer is preferably 2.5 to 5 g / m 2 .
  • the order quantity depends on the nature of the base paper or the cardboard.
  • the top coat in the coating slip has a polymer dispersion or a mixture of several polymer dispersions.
  • This can be, for example, ethylene / methacrylate, polyvinyl acetate, styrene-butadiene or the copolymers derived therefrom.
  • Essential in this polymer dispersions is the fact that these components, which by itself only relatively low vapor densities of about 15 to 20 g / m 2/24 hours (at application rates of 20 g / m 2 dry weight) achieve particular in connection with the but is 4 reach primer according to the invention significantly higher barrier effects, up to 10 g / m 2 / 24h at a significantly reduced application amounts (5 to 10 g / m 2).
  • the application quantity of the primer is between 2.5 and 5 g / m 2 depending on the nature of the base paper.
  • a barrier effect according to DIN 53122 Klima D by the primer alone is not measurable (over 135 g / m 2 / 24h).
  • the primer according to the invention almost completely prevents the migration of polymer dispersions into the paper or cardboard. This results in improved networking and thus a denser film build-up, as well as a reduction in the required application quantity (layer thickness).
  • top coat in the coating slip suggests that it consists of the basic materials water, a copolymer of styrene and butadiene modified with carnauba and paraffin wax, an ethylene / methacrylic acid dispersion and polyvinyl acetate.
  • a suitable top coat can thus be assembled from the above-mentioned basic materials to achieve a vapor barrier. Part combinations can be formed from these components. The only requirement is that this combination achieves an effective vapor barrier.
  • top coat in the coating slip suggests that it consists of the components water and a copolymer of styrene and butadiene modified with carnauba and paraffin wax or of the components water and an ethylene / methacrylic acid dispersion or of the components water and carboxylated styrene-butadiene or consists of the components water and a styrene-acrylate copolymer dispersion.
  • the top coat can contain an additional coat with a coating slip composed of the components water and a styrene-acrylate copolymer dispersion.
  • top coat suggests that a poly vinyl acetate is added to the top coat.
  • the application quantity of the top coat is preferably 5 to 10 g / m 2 . With the specified top coats, this layer thickness is sufficient to achieve an optimal vapor barrier.
  • the application of the primer and top coat is carried out by means of a doctor blade, engraving systems or by means of modifications thereof.
  • the application of the precoat and top coat can thus be achieved by means of known coating techniques which are suitable for achieving thin coating layers. Machines with two coating units are preferably used.
  • the paper or the cardboard is coated on both sides.
  • the coatings can of course be different on the two sides in accordance with the respective requirements, the most varied combinations of the primers and top coats according to the invention being conceivable.
  • the paper or the cardboard is surface-sized. This compresses the paper or cardboard surface and thus supports the effect of the primer.
  • the paper or cardboard 1 can first be seen in a purely schematic manner. It can also be recycled paper, for example.
  • a primer 2 is applied to the paper or cardboard 1.
  • the chemical composition of this primer 2 has been previously described. It can be seen in the drawing that the primer 2 penetrates almost completely into the surface area of the paper or cardboard 1.
  • the special selection of the individual components in this primer 2 guarantees saturation of the capillary fiber structure of the substrate after the polymerization and fills absorption-promoting interstices or covers them with an amorphous network structure.
  • the openings remaining in the primer 2 are sufficient to anchor this top coat 3 well, effectively preventing it from striking away. The result is that the aqueous constituents necessary for optimal polymerization remain in the top coat mass long enough and an improved arrangement of the film-forming molecules is produced.
  • the papers or boxes 1 created in this way considerably improve the properties of these top coats 3, which have hitherto been inadequately used, and achieve barrier values which are comparable with conventional PE coatings with regard to the total coat weight.
  • the great advantage lies in the return of the paper or plastics 1 coated with the described methods to the recycling cycle. In contrast to PE-coated substrates, this recycling is much easier and therefore cheaper.
  • the high junction values achieved even with relatively low application weights mean that resources can be saved in comparison with the previous coating processes. In addition, it is easily possible to use recycled paper.
  • a one-sided coating is provided.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Paper (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Cartons (AREA)
EP95102711A 1994-03-09 1995-02-24 Papier oder Karton Expired - Lifetime EP0671506B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4407878A DE4407878C2 (de) 1994-03-09 1994-03-09 Aroma- und dampfsperrendes(r), beschichtetes(r) Papier oder Karton
DE4407878 1994-03-09

Publications (3)

Publication Number Publication Date
EP0671506A2 EP0671506A2 (de) 1995-09-13
EP0671506A3 EP0671506A3 (de) 1996-04-03
EP0671506B1 true EP0671506B1 (de) 1996-12-11

Family

ID=6512286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95102711A Expired - Lifetime EP0671506B1 (de) 1994-03-09 1995-02-24 Papier oder Karton

Country Status (6)

Country Link
US (1) US5773131A (fi)
EP (1) EP0671506B1 (fi)
AT (1) ATE146242T1 (fi)
DE (2) DE4407878C2 (fi)
ES (1) ES2097664T3 (fi)
FI (1) FI951108L (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
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CN107059475B (zh) * 2017-04-29 2018-12-28 东莞市好百年纸业有限公司 一种包装盒及其改性耐撕耐水轻涂白面牛卡纸

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DE59500058D1 (de) 1997-01-23
DE4407878A1 (de) 1995-09-14
US5773131A (en) 1998-06-30
ES2097664T3 (es) 1997-04-01
ATE146242T1 (de) 1996-12-15
DE4407878C2 (de) 1996-07-04
FI951108L (fi) 1995-09-10
EP0671506A2 (de) 1995-09-13
FI951108A0 (fi) 1995-03-09
EP0671506A3 (de) 1996-04-03

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