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EP3301221B1 - Papier d'emballage et son procédé de fabrication - Google Patents

Papier d'emballage et son procédé de fabrication Download PDF

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Publication number
EP3301221B1
EP3301221B1 EP17193964.8A EP17193964A EP3301221B1 EP 3301221 B1 EP3301221 B1 EP 3301221B1 EP 17193964 A EP17193964 A EP 17193964A EP 3301221 B1 EP3301221 B1 EP 3301221B1
Authority
EP
European Patent Office
Prior art keywords
packaging paper
less
platelet
paper
starch
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.)
Active
Application number
EP17193964.8A
Other languages
German (de)
English (en)
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EP3301221A1 (fr
EP3301221C0 (fr
Inventor
Ralf Lemitz
Michael Steuernagel
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.)
Drewsen Spezialpapiere & Co KG GmbH
Original Assignee
Drewsen Spezialpapiere & Co KG GmbH
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.)
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Publication of EP3301221A1 publication Critical patent/EP3301221A1/fr
Application granted granted Critical
Publication of EP3301221B1 publication Critical patent/EP3301221B1/fr
Publication of EP3301221C0 publication Critical patent/EP3301221C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • 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
    • D21H19/02—Metal coatings
    • 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
    • D21H19/02—Metal coatings
    • D21H19/06—Metal coatings applied as liquid or powder
    • 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
    • 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
    • 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
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • 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
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper

Definitions

  • the present invention relates to a packaging paper with increased barrier properties against oily and greasy materials and a process for its production.
  • Packaging papers with enhanced barrier properties against oily and greasy materials are known in the art. Since papers are inherently porous and permeable to water, grease, and oil, they require special measures to ensure these barrier properties.
  • the required increased barrier properties are achieved either through extremely high fiber refining, with freeness levels of 90° SR (Schopper-Riegler) and higher being selected.
  • this measure proves to be expensive due to the high refining energy required and does not achieve a sufficiently high level of grease resistance.
  • the barrier properties are achieved by applying a barrier coating using fluorocarbons.
  • fluorocarbons are considered environmentally harmful because they have a long shelf life and are hardly biodegradable.
  • a packaging paper according to the invention is produced from a base paper with a basis weight between 15 g/ m2 and 500 g/ m2 and a porosity greater than 150 Gurley-s according to ISO 5636/5:2013.
  • This paper has a pulp mix of long fibers and short fibers, an ash content according to DIN 54370:2007 of less than 15%, and an auxiliary agent.
  • the paper has a barrier layer on at least one surface, which is formed from at least one modified starch and a platelet-shaped pigment with an aspect ratio of greater than 1:20, preferably greater than 1:40, in particular 1:60 or 1:80, and a surface hydrophobicizing agent.
  • the proportion of the platelet-shaped pigment in the coating formulation is between 5% and 50%.
  • D 1 is the thickness in x-direction
  • D 2 is the thickness in x-direction
  • d is the thickness in z-direction of the platelet-shaped pigment.
  • a wide range of base papers can be selected.
  • base paper with a basis weight between 15 g/ m2 and 500 g/ m2 can be used.
  • the intended applications for the packaging paper produced according to the invention naturally play a significant role in the selection of the base paper.
  • a sufficiently strong, as dense as possible, and minimally porous base paper is required. Its porosity should be greater than 150 Gurleys according to ISO 5636/5:2013.
  • a pulp mix is used that, on the one hand, has a certain proportion of short fibers to close the pores for impermeability; pulp fibers from eucalyptus, beech, or birch, or combinations thereof, are particularly suitable for this purpose.
  • a certain proportion of long fibers is used to develop the appropriate strength properties; pulp fibers from pine and spruce are particularly suitable for this purpose.
  • a higher proportion of long fibers is preferably used for low basis weights.
  • the base paper has an ash content of less than 15% according to DIN 54370:2007 in order to achieve a certain degree of whiteness and to contribute to a balance of strength and density appropriate for the application.
  • a packaging paper according to the invention has a barrier layer ("coating") on at least one surface.
  • the coating weight per surface is between 0.1 and 5 g/m 2 , preferably between 0.5 and 5 g/m 2 .
  • This layer is formed from a dispersion of modified starch and a platelet-shaped pigment.
  • a surface hydrophobicizing agent is also added to the coating liquor (coating agent).
  • the pigment is added to the coating liquor to close the pores on the paper surface due to its geometric, platelet-like shape and to prevent penetration, particularly excessive binder migration, of the other liquor components into the paper.
  • the modified starch of the coating liquor takes the form of nano-starch particles, which are applied to the paper web during coating and bond with the pigments during drying. This forms a stable, pore-closing, and very dense film on at least one paper surface. This film, in combination with the special base paper, creates an extremely effective barrier against various liquids, particularly oils, greases, solvents, and possibly water.
  • the papers according to the invention are suitable for a very wide range of applications wherever a barrier effect against natural or synthetic fats, oils, and solvents, or possibly water or mixtures of these substances, is required.
  • Examples include vegetable fats, chocolate fats, animal fats such as chicken fats, but also lubricating greases, etc.
  • low to very high densities can be selected.
  • a further advantage is that this excellent barrier effect against the substances mentioned is achieved using natural, biodegradable and recyclable additives, in particular without the use of fluorocarbons and/or synthetic binders.
  • the base paper comprises wet strength agents to ensure a certain wet strength during production.
  • Wet strength agents must develop a stronger (preferably covalent) bond to the fibers that cannot be displaced by water molecules.
  • polymers or multifunctional compounds with reactive groups are used as wet strength agents. These only react with the OH groups of the pulp fibers under the drying conditions, thereby bridging several fibers together.
  • the modified starch is a modified corn starch, in particular it is a film former based on nanoscale starch, which as a commercial product in particular has a moisture content between 2 and 6%, a density between 0.5 and 0.7 kg/l, a particle size between 50 and 150 nm, a Brookfield viscosity (preferably according to DIN EN ISO 2555-2000-01) at 25% solids and room temperature between 175 and 350 mPas and does not need to be cooked for technical use.
  • a modified corn starch in particular it is a film former based on nanoscale starch, which as a commercial product in particular has a moisture content between 2 and 6%, a density between 0.5 and 0.7 kg/l, a particle size between 50 and 150 nm, a Brookfield viscosity (preferably according to DIN EN ISO 2555-2000-01) at 25% solids and room temperature between 175 and 350 mPas and does not need to be cooked for technical use.
  • the modified starch is also suspendable in cold water, i.e. in water in a temperature range between 10°C and 55°C, in particular below the gelatinization temperature.
  • a device for heating the starch and/or the water required for this can even be dispensed with. This leads to further reduced costs, e.g., a reduction in the costs of purchasing and operating the paper machine.
  • the hydrophobizing agent is an anionic surface sizing agent.
  • anionic polymers are used for this purpose, such as modified copolymers of styrene and maleic anhydride, copolymers of methacrylate and acrylate monomers, copolymers of styrene with acrylate/methacrylate monomers, polyurethane dispersions or copolymers and graft polymers of acrylonitrile.
  • the pulp mix has a proportion of between 0 and 70% long fibers and 30 to 100% short fibers, preferably a proportion of between 10 and 60% long fibers and 40 to 90% short fibers and in particular a proportion of 50% long fibers and 50% short fibers.
  • a paper according to the invention achieves longitudinal and transverse wet breaking strength values of more than 4.0 and 2.5 N/15 mm, respectively, and porosity values of more than 180 Gurleys.
  • the long-fiber pulp is a spruce and/or pine sulfate or sulfite pulp
  • the short-fiber pulp is a eucalyptus, beech, and/or birch sulfate or sulfite pulp.
  • the total ash content is less than 15%, preferably less than 10%, in particular less than 7% and greater than 0%.
  • the basis weight of the base paper is preferably between 18 g/m 2 and 400 g/m 2 , in particular between 20 g/m 2 and 300 g/m 2 , preferably between 22 g/m 2 and 250 g/m 2 , particularly preferably between 25 g/m 2 and 160 g/m 2 , and in particular it is approximately 40 g/m 2 .
  • the basis weight of the selected base paper depends primarily on the required use.
  • the at least one auxiliary agent is selected from a group comprising conditioning agents for pulp, cationic resin dispersion, kaolin slurries, polyamide wet strength resins, polyaluminum chloride, biopolymer and carboxymethylcellulose (CMC) with anionic charges.
  • the substances mentioned contribute to the charge adjustment and to a further increase in the strength properties.
  • the porosity of the paper according to the invention is preferably greater than 180 Gurley-s and less than 25,000 Gurley-s, more preferably greater than 200 Gurley-s and less than 10,000 Gurley-s, and in particular it is approximately 5,000 Gurley-s.
  • the barrier layer according to the invention also significantly increases the impermeability to gases, e.g., air.
  • gases e.g., air.
  • the barrier layer generally contributes significantly more to the impermeability of the paper according to the invention than the underlying paper. This applies both to the impermeability to oils, grease, etc., and to the impermeability to gases.
  • the weight ratio between the modified starch and the platelet-shaped pigments with an aspect ratio > 20 is more than 50% starch and less than 50% pigments, more preferably more than 65% starch and less than 35% pigments, and in particular 85% starch and 15% platelet-shaped pigments.
  • the weight fraction of the modified starch is between 30% and 95%, preferably between 55% and 80%, particularly preferably between 60% and 70% and in particular 60% or 65%, and the weight fraction of the platelet-shaped pigment with an aspect ratio > 20 is between 70% and 5%, preferably between 45% and 20%, particularly preferably between 40% and 30% and in particular 40% or 35%.
  • the weight ratio of the mixture of modified starch and platelet-shaped pigments - and thus also the resulting density of the paper - depends primarily on the required use.
  • the barrier layer has an oil and grease impermeability, according to DIN standard 53116 - 2003, of at least level 5, particularly preferably of at least level 4 and in particular of level 3.
  • the barrier layer has an oil and grease impermeability according to DIN EN ISO 16532-2:2007 of at least 3 KIT, particularly preferably of at least 6 KIT and in particular of 12 KIT.
  • the barrier layer has an oil and grease resistance according to the TAPPI standard of 60 s to 1800 s.
  • the barrier layer has an oil and grease resistance according to the so-called "hot oil test” - explained above - of 1 min to 20 min.
  • the barrier layer has an oil and grease resistance according to the so-called "Nutella test” of 1 hour to 24 hours.
  • a particular advantage of the paper according to the invention is that it achieves excellent results in a wide range of these tests, even when – as the breadth of the tests conducted shows – the impermeability to a range of quite heterogeneous fats, oils, solvents, and/or possibly water is tested.
  • papers according to the invention are suitable for a very wide range of applications wherever a barrier effect against natural or synthetic fats, oils, and solvents, or possibly water or mixtures of these substances, is required.
  • a wide range of base papers can be selected.
  • base paper with a basis weight between 15 g/ m2 and 500 g/ m2 can be used.
  • the intended applications for the packaging paper produced according to the invention naturally play a significant role in the selection of the base paper.
  • a sufficiently strong, as dense as possible, and minimally porous base paper is required.
  • the refining of the base paper plays a role here; that is, a base paper with the highest possible specific refining energy is used.
  • a packaging paper according to the invention has a barrier layer ("coating") on at least one surface.
  • a coating agent is provided, which is formed from a dispersion comprising: modified starch, platelet-shaped pigment, a surface hydrophobicizing agent, and water.
  • the coating is applied to the base paper by means of a coating unit, a printing unit, a coating machine, or by spraying.
  • the process according to the invention can therefore be carried out on a wide variety of paper machine types.
  • the line is then dried on the base paper.
  • the platelet-shaped pigment seals the pores present on the paper surface.
  • the modified starch in the coating liquor is present in the form of tiny nano-starch particles that bond with the platelet-shaped pigment during drying. This forms a stable, pore-sealing, and very dense film on at least one paper surface. This film, especially in combination with the dense base paper, forms an effective barrier against various liquids, especially oils, greases, solvents, and possibly water.
  • the drying and the smoothing of the coated paper also play a role.
  • the base paper used in production comprises wet strength agents to ensure a certain wet strength during production.
  • Wet strength agents must develop a stronger (preferably a covalent) bond to the fibers that cannot be displaced by water molecules.
  • Wet strength agents are usually Polymers or multifunctional compounds with reactive groups are used which only react with the OH groups of the cellulose fibres under the drying conditions and thereby bridge several fibres together.
  • the solids content of the coating agent according to DIN EN 827:2006 is between 10% and 35%, preferably between 20% and 30%, and in particular this is approximately 28%.
  • the solids content according to DIN EN 827:2006 of the coating agent is between 20% and 60%, preferably between 30% and 50%, particularly preferably between 35% and 45%.
  • the temperature of the glue liquor is 30 to 60° C.
  • the coated paper should be dried as quickly as possible. This is preferably done by non-contact drying followed by contact drying, for example, using an air-turn dryer and/or infrared heater, followed by a drying cylinder.
  • the best possible runnability of the paper on the paper machine should be aimed for, which can be achieved in particular by uniform coating application and sufficient strength of the paper.
  • the platelet-shaped pigment is added to the coating liquor to close the pores on the paper surface due to its geometric, platelet-shaped shape and to prevent penetration, particularly excessive penetration, of the other liquor components into the paper.
  • the modified starch of the coating liquor is in the form of tiny nano-starch particles that are applied to the paper web during coating and bond with the pigments during the drying process. This forms a stable, pore-closing, and very dense film on at least one paper surface. This film, in combination with the dense base paper, creates an extremely effective barrier against various liquids, particularly oils, greases, solvents, and possibly water.
  • the coating application on the top side and/or on the bottom side of the base paper is in each case between 0.1 and 7.0 g/m 2 , preferably between 0.5 and 5.0 g/m 2 , particularly preferably between 1.0 and 4.0 g/m 2 and in particular between 1.5 and 3.0 g/m 2 .
  • the thickness of the coating depends significantly on the intended use of the packaging paper according to the invention. For example, to achieve the very high required barrier strength, the coating is particularly Thickness can be selected.
  • the thickness of the coating for example, is between 0.1 and 7 ⁇ m. If necessary, the coating is also applied on both sides.
  • a packaging paper according to the invention has, in principle, a broad range of applications.
  • These packaging papers can be used as barrier papers against oily and greasy materials, e.g., for wrapping or packing hot or cold foods such as meat, sausage, fish, cheese, snacks such as French fries or pizzas, as well as fruit and vegetables, etc., during retail sales or directly after production.
  • base papers can be selected for the production of packaging papers according to the invention, these papers can be produced in a variety of forms, for example, as simple sheets of paper, foldable cardboard, or even as thermoformable papers.
  • these papers are suitable for a wide range of applications wherever a barrier effect against oils, solvent-oil mixtures, vegetable fats, chicken fats, chocolate fats, etc. is required.
  • these papers can also be used for machine parts such as screws, seals, etc., which are either to be stored or shipped in oils, solvents, etc., or which - e.g. during shipping - are to be protected against grease, oils, solvents, and possibly water, etc.
  • basis weights between 31 and 70 g/ m2 and thicknesses between 41 and 49 ⁇ m were used.
  • the porosity of the base papers ranged from 200 to 1,000 Gurley s.
  • the ash content ranged from 0 to 2%, with sizing between 1.5 and 60.

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Claims (16)

  1. Papier d'emballage présentant des propriétés de barrière, en particulier contre des matériaux huileux et gras, fabriqué à partir de
    un papier brut
    présentant un grammage entre 15 g/m2 et 500 g/m2 et une porosité supérieure à 150 Gurley-s selon la norme ISO 5636/5:2013,
    présentant un mélange de cellulose constitué par une proportion de 0 à 70% de fibres longues et de 30 à 100% de fibres courtes,
    une proportion de cendres selon la norme DIN 54370:2007 inférieure à 15% et
    un adjuvant,
    caractérisé en ce que le papier présente, sur au moins une surface, une couche formant barrière, qui est formée à partir d'au moins un amidon de pomme de terre cationique nanométrique en tant qu'agent filmogène et/ou d'un amidon de maïs modifié nanométrique en tant qu'agent filmogène, d'un pigment sous forme de plaquettes présentant un rapport d'aspect supérieur à 1:20, de préférence supérieur à 1:40, en particulier de 1:80, et d'un agent rendant hydrophobe surfacique anionique en tant qu'agent d'encollage surfacique.
  2. Papier d'emballage selon la revendication 1, caractérisé en ce que le papier brut présente en outre un agent de résistance à l'état humide.
  3. Papier d'emballage selon l'une des revendications précédentes, caractérisé en ce que le mélange de cellulose présente une proportion entre 10 et 60% de fibres longues et entre 40 et 90% de fibres courtes et en particulier une proportion de 50% de fibres longues et de 50% de fibres courtes.
  4. Papier d'emballage selon l'une des revendications précédentes, caractérisé en ce que la proportion de cendres est inférieure à 15%, de préférence inférieure à 5% et en particulier située entre 0% et 5%.
  5. Papier d'emballage selon l'une des revendications précédentes, caractérisé en ce que la proportion de cendres est inférieure à 15%, de préférence inférieure à 10% et supérieure à 0%.
  6. Papier d'emballage selon l'une des revendications précédentes, caractérisé en ce que la porosité est de préférence supérieure à 180 Gurley-s et inférieure à 25.000 Gurley-s, de manière particulièrement préférée supérieure à 200 Gurley-s et inférieure à 10.000 Gurley-s et est en particulier d'environ 5000 Gurley-s.
  7. Papier d'emballage selon l'une des revendications précédentes, caractérisé en ce que le rapport en poids entre l'amidon modifié et le pigment sous forme de plaquettes présentant un rapport d'aspect > 20 est situé à plus de 50% d'amidon et moins de 50% de pigment sous forme de plaquettes, de manière particulièrement préférée à plus de 65% d'amidon et moins de 35% de pigment sous forme de plaquettes et en particulier à 85% d'amidon et 15% de pigment sous forme de plaquettes.
  8. Papier d'emballage selon l'une des revendications précédentes, caractérisé en ce que
    la proportion en poids de l'amidon modifié se situe entre 30% et 95%, de préférence entre 55% et 80%, de manière particulièrement préférée entre 60% et 70% et en particulier à 60% ou, selon le cas, 65% et
    celle du pigment sous forme de plaquettes présentant un rapport d'aspect > 20 se situe entre 70% et 5%, de préférence entre 45% et 20%, de manière particulièrement préférée entre 40% et 30% et en particulier à 40% ou, selon le cas, 35%.
  9. Papier d'emballage selon l'une des revendications précédentes, caractérisé en ce que la couche formant barrière présente une résistance à l'huile et à la graisse selon la norme DIN 53116-2003 au moins de la catégorie 5, de manière particulièrement préférée de la catégorie 4 et en particulier de la catégorie 3.
  10. Papier d'emballage selon l'une des revendications précédentes, caractérisé en ce que la couche formant barrière présente une résistance à l'huile et à la graisse selon la norme TAPPI T 454 om-15 d'au moins 60 s, de manière particulièrement préférée de 60-600 s et en particulier de 60-1800 s.
  11. Papier d'emballage selon l'une des revendications précédentes, caractérisé en ce que la couche formant barrière présente une résistance à l'huile et à la graisse selon le test appelé "à l'huile chaude" d'au moins 1 minute, de manière particulièrement préférée de 1 à 10 minutes et en particulier de 1 à 20 minutes.
  12. Papier d'emballage selon l'une des revendications précédentes, caractérisé en ce que la couche formant barrière présente une résistance à l'huile et à la graisse selon le test appelé "au Nutella" d'au moins 1 heure, de manière particulièrement préférée d'au moins 24 heures.
  13. Procédé de préparation d'un papier d'emballage selon l'une des revendications précédentes, présentant les étapes de :
    - mise à disposition d'un papier brut présentant une teneur en matières sèches prédéfinie entre 5% et 15%, dont le grammage est situé entre 15 g/m2 et 500 g/m2 et dont la porosité est supérieure 150 Gurley-s, présentant un mélange de cellulose constitué par une proportion de 0 à 70% de fibres longues et de 30 à 100% de fibres courtes, une proportion de cendres inférieure à 15% et un adjuvant ;
    - mise à disposition d'un agent d'enduction présentant au moins un amidon de pomme de terre cationique nanométrique en tant qu'agent filmogène et/ou un amidon de maïs modifié nanométrique en tant qu'agent filmogène, un pigment sous forme de plaquettes présentant un rapport d'aspect supérieur à 1:20, de préférence supérieur à 1:40, en particulier de 1:80, et un agent rendant hydrophobe surfacique anionique en tant qu'agent d'encollage surfacique et de l'eau ;
    - application de la couche sur le papier brut au moyen d'un groupe d'enduction, d'un groupe d'impression, d'une machine d'enduction ou dans un procédé de pulvérisation ;
    - séchage de la couche sur le papier brut.
  14. Procédé selon la revendication 13, caractérisé en ce que la teneur en solides selon la norme DIN EN 827:2006 de l'agent d'enduction est située entre 25% et 30%, de préférence entre 27,5% et 30% et est en particulier d'environ 28%.
  15. Procédé selon la revendication 13 ou 14, caractérisé en ce que la teneur en solides selon la norme DIN EN 827:2006 de l'agent d'enduction est située entre 20% et 60%, de préférence entre 30% et 50% et de manière particulièrement préférée entre 35% et 45%.
  16. Procédé selon la revendication 13, 14 ou 15, caractérisé en ce que l'application de la couche sur la face supérieure et/ou sur la face inférieure du papier brut est à chaque fois située entre 0,1 et 7,0 g/m2, de préférence entre 0,5 et 5,0 g/m2, de manière particulièrement préférée entre 1,0 et 4,0 g/m2 et en particulier entre 1,5 et 3,0 g/m2.
EP17193964.8A 2016-09-30 2017-09-29 Papier d'emballage et son procédé de fabrication Active EP3301221B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016118587.6A DE102016118587A1 (de) 2016-09-30 2016-09-30 Verpackungspapier und Verfahren für dessen Herstellung

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EP3342929B1 (fr) 2016-12-30 2018-12-12 Mitsubishi HiTec Paper Europe GmbH Papier barrière
SE544892C2 (en) * 2020-04-15 2022-12-20 Stora Enso Oyj Method for manufacturing a multilayer film comprising highly refined cellulose fibers, a multilayer film and paperboard comprising said multilayer film
EP3974580A1 (fr) * 2020-09-28 2022-03-30 BillerudKorsnäs AB Produit en papier pour l'emballage tubulaire

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EP2370533B1 (fr) * 2008-12-30 2016-04-20 Barrcoat AB Matière barrière à base de biopolymère et son procédé de fabrication

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FI117717B (fi) * 1999-07-09 2007-01-31 Ciba Sc Holding Ag Pintaliimakoostumus
US6372361B1 (en) * 2000-07-07 2002-04-16 National Starch And Chemical Investment Holding Corporation Coating for paper products
US9580866B2 (en) * 2009-06-03 2017-02-28 Solenis Technologies, L.P. Cationic wet strength resin modified pigments in water-based latex coating applications
EP2777934B1 (fr) * 2011-11-10 2017-03-15 Nippon Paper Industries Co., Ltd Matériau d'emballage à papier barrière
FI125255B (fi) * 2012-06-08 2015-08-14 Upm Kymmene Corp Menetelmä ja järjestelmä pakkausmateriaalin valmistamiseksi sekä pakkausmateriaali ja pakkaus
FI124411B (fi) * 2012-07-05 2014-08-15 Upm Kymmene Corp Elintarvikepakkaus

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EP2370533B1 (fr) * 2008-12-30 2016-04-20 Barrcoat AB Matière barrière à base de biopolymère et son procédé de fabrication

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EP3301221C0 (fr) 2025-04-30
DE202017006947U1 (de) 2018-12-14
DE102016118587A1 (de) 2018-04-05

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