EP3821075A1 - Système d'emballage - Google Patents

Système d'emballage

Info

Publication number
EP3821075A1
EP3821075A1 EP19740511.1A EP19740511A EP3821075A1 EP 3821075 A1 EP3821075 A1 EP 3821075A1 EP 19740511 A EP19740511 A EP 19740511A EP 3821075 A1 EP3821075 A1 EP 3821075A1
Authority
EP
European Patent Office
Prior art keywords
packaging system
paper
barrier layer
layer
barrier
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
EP19740511.1A
Other languages
German (de)
English (en)
Other versions
EP3821075B1 (fr
EP3821075C0 (fr
Inventor
Dieter Becker
Fulvio CADONAU
Jochen Schlegel
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.)
Mitsubishi HiTec Paper Europe GmbH
Smurfit Kappa Hoya Papier und Karton GmbH
Original Assignee
Mitsubishi HiTec Paper Europe GmbH
Smurfit Kappa Hoya Papier und Karton 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.)
Filing date
Publication date
Application filed by Mitsubishi HiTec Paper Europe GmbH, Smurfit Kappa Hoya Papier und Karton GmbH filed Critical Mitsubishi HiTec Paper Europe GmbH
Publication of EP3821075A1 publication Critical patent/EP3821075A1/fr
Application granted granted Critical
Publication of EP3821075B1 publication Critical patent/EP3821075B1/fr
Publication of EP3821075C0 publication Critical patent/EP3821075C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging 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
    • 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
    • D21H19/80—Paper comprising more than one coating
    • D21H19/82—Paper comprising more than one coating superposed
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper

Definitions

  • the present invention relates to a packaging system (1), in particular a food packaging system, comprising or consisting of A) a first paper layer (2) comprising particulate activated carbon, having a front side and a rear side opposite the front side, B) one on the front side and / or rear side of the Paper layer (2) or on at least one side of a carrier paper (3) arranged first barrier layer (4) consisting of or comprising a binder and a pigment, and C) consisting of a second barrier layer (5) arranged on the first barrier layer (4) from or comprising an acrylate copolymer and a wax.
  • the present invention further relates to the use of a packaging system according to the invention as packaging and a method for producing a packaging system according to the invention. Further aspects of the present invention result from the following description and the claims.
  • Food is usually sold in packaging made from cardboard, cardboard and / or paper. High demands are placed on the packaging, particularly in the case of fatty foods.
  • fat containing food can penetrate the packaging material with the fat from the food. This can result in the packaging material softening and tearing, or one Contamination of other objects with the grease occurs when you come in contact with the packaging.
  • a wood-free "sandwich paper” is often used for packaging fatty foods, which has a certain fat resistance due to the greasy grinding of the fiber materials. However, the fat resistance of these sandwich papers is often not sufficient.
  • a composite packaging material is often used as a more fat-resistant alternative to sandwich paper.
  • a composite packaging material can, for example, consist of a composite material formed from a paper and a plastic and / or aluminum foil. If there is no polyethylene coating (PE), fluorocarbones can be used as water-repellent chemicals. For example, paper is coated on one side with polyethylene, often in an energy-intensive extrusion process, or with aluminum foil. These composite packaging materials are characterized by their high fat resistance. If these composite packaging materials are used for paper recycling, however, these materials significantly interfere with the recycling process. Due to the film layer, the composite packaging materials cannot be defibrated sufficiently during the recycling process and so-called wet-strength specks form.
  • Specks are remnants of the plastic or aluminum foil to which paper fibers still adhere. These specks have to be separated during the recycling process. The necessary separation of the specks in the fiber processing process results in a not inconsiderable loss of fiber, which is withdrawn from the process. It is also not possible to compost these composites because the plastic or aluminum foils used are not biodegradable.
  • DE 10 2014 119 572 A1 describes packaging paper for foodstuffs with a basis weight between 20 g / m 2 and 40 g / m 2 , and with a mass fraction of filler which has less than 20% based on the mass of the uncoated paper ,
  • the packaging paper has a coating on at least one side, which comprises a vegetable oil, talcum and a binder encapsulated in a polymer.
  • US 2015/0274350 A1 describes a packaging made of paper or cardboard which has at least one barrier layer and can be produced by emulsion polymerization, the emulsion polymerization taking place in the presence of at least one carbohydrate compound.
  • resistance to water and water vapor permeability are also very important. If, for example, moist goods are to be stored in the packaging for a longer period of time, then it must be ensured that the goods do not dry out during storage. At the same time, it must also be ensured that the moist goods do not soften the packaging and this can damage the packaging.
  • dry goods such as oatmeal or muesli, it must be ensured that the goods remain dry and do not soften during storage.
  • packaging is to be made available which can be sent to paper recycling in its entirety without the packaging having to be refurbished beforehand (e.g. separating plastic or metal foils) or the recycling process by the formation of specks or other rejects such as foils.
  • the packaging material should be designed in such a way that it is suitable for contact with food and has a low water and water vapor permeability, a high fat resistance and a high barrier effect against aroma substances.
  • a packaging system (1) in particular a food packaging system, comprising or consisting of A) a first paper layer (2) comprising particulate activated carbon, having a front side and a rear side opposite the front side,
  • first barrier layer (4) arranged on the front and / or back of the paper layer (2) or on at least one side of a carrier paper (3), consisting of or comprising a binder and a pigment, and C) one on the first barrier layer (4) arranged second barrier layer (5), consisting of or comprising an acrylate copolymer and a wax.
  • first barrier layer consisting of or comprising a binder and a pigment
  • second barrier layer consisting of or comprising an acrylate copolymer and a wax
  • the particulate activated carbon in the interior of the paper layer reduces or prevents the migration of organic materials, such as mineral oils, fragrances or flavors, through the first paper layer.
  • Mineral oils MOSH and / or MOAH
  • MOAH which are already contained within the paper layer due to the use of recycled fibers, are prevented by the particulate activated carbon. changes from the paper layer.
  • the packaging system is also recyclable.
  • a packaging system according to the invention forms a pulp without specks or other rejects being formed.
  • the packaging system according to the invention can thus be completely fed to paper recycling (fiber recycling).
  • the use of extruded, glued-on foils or vapor-deposited or glued-on metal foils is preferably completely dispensed with, since the individual layers of the packaging system according to the invention are produced by applying dispersions.
  • the individual layers of the packaging system according to the invention are not extruded and preferably also do not receive any further extruded, glued or evaporated films.
  • a packaging system is preferred, the activated carbon being formed at least partially from a vegetable material, in particular coconut shells.
  • a vegetable material in particular coconut shells.
  • Such an activated carbon has particularly good mineral oil absorption properties.
  • the activated carbon can be provided in granular form.
  • the grinding fineness can be approximately 80%, for example approximately 45 mm.
  • the water content when the activated carbon is packaged can preferably be at most 10%, in particular 7%.
  • the ash content can be a maximum of 3%, preferably 1%.
  • Acidic proportions of the activated carbon can amount to a maximum of 3%, preferably 0.8%.
  • the water-soluble fraction can be a maximum of 0.2%, in particular 0.05%.
  • the pH of the activated carbon can be between 5 and 7 and preferably 6.5.
  • the minimum iodine number can be 900 mg / g, in particular 950 mg / g.
  • the specific surface area (BET) of the activated carbon particles can be approximately 1000
  • an alternative filter material for binding mineral oil substances can be used instead of particulate activated carbon.
  • different filter materials can be used simultaneously, e.g. B. a combination of activated carbon and another filter material.
  • a packaging system according to the invention is preferred, the activated carbon having an average particle diameter d50 in the range between 1 pm and 100 pm. Activated carbon particles can easily penetrate a fiber layer. At the same time, undesired escape of the activated carbon from the first paper layer can be prevented (possibly by additives).
  • activated carbon can bind mineral oils and other organic compounds almost permanently, at least during the usual life of the packaging system (usually less than two years). It goes without saying that the activated carbon can in particular be an activated carbon suitable for food.
  • the activated carbon can be (almost) evenly distributed in the paper layer. In principle, partial enforcement of the paper layer is sufficient. In order to prevent the activated carbon from escaping from the paper layer, the proportion of activated carbon in an inner region of the paper layer can preferably be larger than on the outer surfaces.
  • a packaging system according to the invention is preferred, the mass fraction of particulate activated carbon in the first paper layer (2) being 0.1 to 20%, preferably 0.3 to 10%, particularly preferably 0.5 to 5%, more preferably 0, 5 to 3%, based on the total mass of the first paper layer.
  • a packaging system is preferred, at least one further layer (2.1, 2.2, 6, 6.1) connected to the first paper layer being provided. It is particularly preferred here, the at least one further layer being a further paper layer comprising activated carbon (4.1) or the further layer being a protective layer (6, 6.1).
  • a packaging system according to the invention is preferred, the mass fraction of particulate activated carbon in the further paper layer (4.1) being 0.1 to 20%, preferably 0.3 to 10%, particularly preferably 0.5 to 5%, further preferably 0, 5 to 3%, based on the total mass of the further paper layer.
  • a packaging system is preferred, two further layers (2.1, 2.2) connected to the first paper layer being provided, and preferably the first paper layer (2) with the two further paper layers (2.1, 2.2) being designed as a single-layer corrugated cardboard.
  • two-layer or multi-layer corrugated cardboard and / or different types of corrugation such as B-wave, C-wave, F-wave, etc., can also be provided.
  • a packaging system according to the invention is preferred, the packaging system having a migration value of MOSH and MOAH of at least less than 2 mg / kg, preferably less than or equal to 0.6 mg / kg, more preferably less than or equal to 0.4 mg / kg.
  • the migration is preferably determined by using modified polyphenylene oxides (MPPO) (Tenax®) in accordance with DIN EN 14338: 2004-03.
  • MPPO modified polyphenylene oxide
  • MPPO modified polyphenylene oxide
  • Tenax® is regarded as a replacement test food.
  • the second barrier layer of the packaging system according to the invention is covered with modified polyphenylene oxide (MPPO; Tenax®) and stored at 40 ° C. for 10 days in a conventional oven.
  • the polyphenylene oxide (MPPO; Tenax®) is extracted with hexane for chromatography.
  • the migration value of MOSH and MOAH is determined using GC-FID.
  • the wax in the second barrier layer is a wax made of saturated hydrocarbons.
  • acrylate copolymers are particularly compatible with waxes made from saturated hydrocarbons and therefore a uniform and stable second barrier layer can be formed. Especially when heat sealing, when the barrier Layer is heated to temperatures above 90 ° C, there is no undesired segregation or cluster formation with a mixture of acrylate copolymer and wax made of saturated hydrocarbons.
  • the wax having a melting point above 40 ° C., preferably above 50 ° C., particularly preferably above 60 ° C.
  • the wax having a melting point of less than 100 ° C., preferably less than 90 ° C., particularly preferably less than 80 ° C.
  • the wax having a melting point in the range from 40 ° C. to 100 ° C., preferably in the range from 50 ° C. to 90 ° C., particularly preferably in the range from 60 ° C. to 80 ° C.
  • the mass fraction of the wax in the second barrier layer being 5 to 60%, preferably 15 to 50%, particularly preferably 20 to 40%, based on the total mass of the second barrier layer.
  • Packaging systems are particularly preferred according to the invention, the wax based on saturated hydrocarbons being a wax based on octacosane.
  • Packaging systems are preferred according to the invention, the wax comprising or consisting of hydrocarbons which a) comprises at least 26 carbon atoms, preferably at least 28 carbon atoms and / or b) contains a maximum of 39 carbon atoms, preferably a maximum of 33 carbon atoms.
  • Packaging systems are preferred according to the invention, the wax comprising or consisting of hydrocarbons comprising 26 to 39 carbon atoms, preferably 28 to 33 carbon atoms.
  • Packaging systems which are in the first paper layer (2), in the backing paper (3), in the first barrier layer (4) and / or in the second are preferred according to the invention
  • Barrier layer (5) does not include degraded starch, starch and / or amylopectins and in particular does not include carbohydrates.
  • the acrylate copolymer in the second barrier layer is particularly preferably a copolymer with an average molar mass in the range from 50,000 to 150,000 g / mol, preferably in the range from 80,000 to 130,000 g / mol, particularly preferably in the range from 90,000 to 100,000 g / mol.
  • the mean molar mass is determined with the aid of gel permeation chromatography (GPC) with tetrahydrofuran (THF; tetramethylene oxide; 1,4-epoxybutane; oxacyclopentane) as a solvent, polystyrene as standard and detection using an RI detector (refractive index detector).
  • the acrylate copolymer in the second barrier layer is particularly preferably a copolymer produced using two, three, four, five, six or all monomers selected from the group consisting of methyl acrylate, methyl methacrylate, butyl acrylate, butyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate and styrene.
  • the properties of the resulting acrylate copolymer can be optimized by selecting the monomers used to produce the acrylate copolymer.
  • Surveys of our own have surprisingly shown that an acrylate copolymer which has been prepared from methyl acrylate, methyl methacrylate, butyl acrylate, butyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate and / or 2-ethylhexyl ester and / or styrene has particularly good barrier properties and with which Wax or in particular is compatible with the wax based on saturated hydrocarbons.
  • methyl acrylate methyl methacrylate, butyl acrylate, butyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate and styrene
  • other monomers may have been used to prepare the acrylate copolymer or the copolymer was prepared from two, three, four, five , six or all monomers selected from the group consisting of acrylic acid methyl ester, methacrylic acid methyl ester, acrylic acid butyl ester, methacrylic acid butyl ester, acrylic acid 2-ethylhexyl ester, methacrylic acid 2-ethylhexyl ester and styrene.
  • the acrylate copolymer is particularly preferably a random copolymer.
  • acrylate copolymers can also be produced as block copolymers.
  • phases are formed in which blocks of the same monomer units agglomerate. This phase formation in block copolymers can be disadvantageous according to the invention.
  • the mass fraction of the acrylate copolymer which is present in the second barrier layer in addition to the wax is 40 to 95% in the second barrier layer, preferably 50 to 85%, particularly preferably 60 to 80%, based on the total mass of the second barrier layer.
  • the mass fraction of the acrylate copolymer in the second barrier layer is 40 to 95% and the mass fraction of the wax in the second barrier layer is 5 to 60% and it is even more preferred if the mass fraction of the acrylate copolymer is 50 to 85% in the second barrier layer and the mass fraction of the wax in the second barrier layer 15 is up to 50% and it is even more preferred if the mass fraction of the acrylate copolymer in the second barrier layer is 60 to 80% and the mass fraction of the wax in the second barrier layer is 20 to 40%.
  • the second barrier layer consists of acrylate copolymer, wax and a mass fraction of at most 10%, preferably at most 5%, of other substances which are not acrylate copolymer or wax, based on the total mass of the second barrier layer.
  • a packaging system according to the invention is preferred, the area-related mass of the second barrier layer being in the range from 2.5 to 7.4 g / m 2 , preferably in the range from 2.8 to 6.5 g / m 2 , particularly preferably in the range from 2.9 to 5.2 g / m 2 .
  • a packaging system according to the invention is preferred, the second barrier layer being a dispersion layer.
  • a dispersion layer is understood to mean a layer which has been produced from a dispersion, usually an aqueous dispersion. It is therefore preferred according to the invention if the second barrier layer was produced from a dispersion.
  • the individual polymer molecules are not distributed homogeneously in a dispersion layer, but can in some cases be present in separate phases, it being possible for individual phases to be present separately from one another.
  • the presence of phases is a result of the manufacturing process in which the layers are made from a dispersion in which the polymers are already in disperse phases. After removing the dispersion medium, usually water, no film forms.
  • a film is understood to be a very thin ( ⁇ 1 mm) metal or plastic sheet which has constant strength along its entire dimension and includes long-range ordering of the molecular structure.
  • the constant strength is a result of the polymer molecules homogeneously distributed in the film.
  • the main characteristic of plastic films is their ability to be wrapped around objects and to adapt to their shape.
  • An invented Packaging system according to the invention is preferred, the first barrier layer and / or the second barrier layer not being formed as a film.
  • a film can also be used as a separate layer, i.e. without a backing paper, while a dispersion layer is not a stand-alone layer, i.e. not without a carrier medium.
  • a packaging system according to the invention is preferred, the pigment in the first barrier layer being an organic pigment, an inorganic pigment or a mixture of organic pigment and inorganic pigment.
  • a packaging system according to the invention is particularly preferred, the pigment in the first barrier layer being an inorganic pigment selected from the list consisting of calcined kaolin, kaolin, kaolinite, magnesium silicate hydrate, silicon oxide, bentonite, calcium carbonate, aluminum hydroxide, aluminum oxide and boehmite.
  • a packaging system according to the invention is particularly preferred, the pigment being formed in the form of a plate in the first barrier layer.
  • platelet-shaped pigments leads to particularly good properties of the first barrier layer or the corresponding packaging system.
  • the individual platelets of the pigment are staggered one above the other, resulting in a very dense layer structure that has a high barrier effect.
  • Pigments that are not platelet-shaped do not form these layer structures.
  • Platelet-shaped also referred to as flake-shaped or flake-like is understood to mean particles which have a substantially larger diameter than their thickness.
  • the platelet-shaped pigment has a (preferably average) aspect ratio from 5 to 100, preferably from 15 to 100, more preferably from 20 to 80.
  • aspect ratio also “aspect ratio” or “shape factor” “Called) is the quotient between the diameter and the thickness of the plate of the inorganic pigment before the mix with the other components.
  • An aspect ratio of 15 means that the diameter of the plate is 15 times larger than the thickness of the plate.
  • a packaging system according to the invention is preferred, the mass fraction of the pigment in the first barrier layer being 5 to 60%, preferably 15 to 40%, particularly preferably 20 to 40%, based on the total mass of the first barrier layer.
  • a packaging system according to the invention is preferred, the binder in the first barrier layer being an acrylate polymer or acrylate copolymer.
  • a packaging system according to the invention is preferred, the binder in the first barrier layer being an anionic acrylate polymer or an anionic acrylate copolymer.
  • the binder in the first barrier layer being a copolymer, produced using one, two, three or all monomers selected from the group consisting of butyl methacrylate, butyl acrylate, methacrylonitrile, acrylonitrile, a-methylstyrene and styrene ,
  • a packaging system according to the invention is preferred, the binder in the first barrier layer being a copolymer, produced using butyl acrylate, acrylonitrile and styrene.
  • a packaging system according to the invention is preferred, the area-related mass of the first barrier layer being in the range from 1.5 to 6.4 g / m 2 , preferably in the range from 1.8 to 5.5 g / m 2 , particularly preferably in the range is from 1.9 to 4.2 g / m 2 .
  • the first barrier layer consists of an acrylate polymer or acrylate copolymer, a pigment and a mass fraction of at most 5%, preferably at most 2.5%, of further substances (for example additives) which are not acrylate polymers or Ac - Rylat copolymers or pigments, based on the total mass of the second barrier layer.
  • the packaging system comprises or consists of the packaging system
  • the packaging system comprises or consists of the packaging system
  • first barrier layer (4) consisting of or comprising a binder and a pigment
  • the packaging system comprises a first paper layer (2) and a laminate, optionally spatially separated therefrom, from a carrier paper (3), a first barrier layer (4) and a second barrier layer (5).
  • the packaging system can consist of a folding carton which comprises or consists of a first paper layer (2) and an inner bag contained in the folding carton, which consists of a carrier paper (3) and first and second barrier layers (4, 5) arranged thereon.
  • the inner bag can be freely removable (for example together with the contents of the bag) or can be fastened in the carton, for example by (if necessary partially) gluing or connecting the inner bag to the carton.
  • the paper layer (2) comprising particulate activated carbon and the carrier paper (3).
  • the only difference between the two layers or paper is the presence of particulate activated carbon.
  • the other components can be identical or can differ from one another.
  • the following explanations on the carrier paper therefore also apply to the paper layer (2), the paper layer additionally containing particulate activated carbon.
  • backing paper is used as a generic term, which also includes backing board and backing cardboard.
  • a backing paper is a flat material that essentially consists of fibers of mostly vegetable origin and is formed by dewatering a fiber suspension. The term backing paper should not restrict the basis weight.
  • a packaging system according to the invention is preferred, the carrier paper being a paper, a cardboard or a cardboard. If the carrier paper is a cardboard, it can be designed, for example, as solid cardboard and corrugated cardboard (e.g. single corrugation or double corrugation). It goes without saying that, according to other variants of the invention, two-layer or multi-layer corrugated cardboard and / or different types of corrugation, such as B-wave, C-wave, F-wave, etc., can also be provided.
  • a packaging system is particularly preferred, the backing paper being a paper with a mass per unit area in the range from 30 to 150 g / m 2 , a cardboard with a mass per unit area of over 150 g / m 2 and less than 225 g / m 2 or is a cardboard with a mass per unit area of more than 225 g / m 2 .
  • a packaging system according to the invention is very particularly preferred, the backing paper being a paper with a mass per unit area in the range from 25 to 80 g / m 2 , preferably with a mass per unit area in the range from 30 to 60 g / m 2 is particularly preferred with a mass per unit area in the range from 35 to 50 g / m 2 .
  • a packaging system is very particularly preferred, the backing paper being a paper with a mass per unit area in the range from 25 to 80 g / m 2 , preferably with a mass per unit area in the range from 30 to 60 g / m 2 , particularly preferably with a basis weight in the range from 35 to 50 g / m 2 and the paper layer (2) is a cardboard with a basis weight of over 150 g / m 2 and less than 225 g / m 2 or a cardboard with a basis weight of over Is 225 g / m 2 .
  • a packaging system according to the invention is preferred, the paper layer (2) being a cardboard or a cardboard.
  • the paper layer (2) is a cardboard
  • it can be designed, for example, as solid cardboard and corrugated cardboard (e.g. single corrugation or double corrugation).
  • corrugated cardboard e.g. single corrugation or double corrugation.
  • two-layer or multi-layer corrugated cardboard and / or different types of corrugation such as B-wave, C-wave, F-wave, etc., can also be provided.
  • a packaging system according to the invention is preferred, wherein the backing paper contains no organic or inorganic pigments.
  • the backing paper is a base paper.
  • a packaging system according to the invention is preferred, the backing paper containing a cellulose with a Schopper-Riegler degree in the range from 24 to 54 ° SR, preferably in the range from 29 to 49 ° SR, particularly preferably in the range from 34 to 44 ° SR.
  • a packaging system according to the invention is preferred, the backing paper having a short-fiber pulp with a Schopper-Riegler degree of at least 30 ° SR and / or a long-fiber pulp with a Schopper-Riegler degree of at least 24 ° SR.
  • a packaging system is preferred, the backing paper comprising or consisting of a cellulose which comprises a short fiber cellulose and a long fiber cellulose.
  • the combination of a short fiber pulp and a long fiber pulp with the Schopper-Riegler grades used according to the invention leads to a particularly dense paper which has a very high barrier effect against fat. This barrier effect can be further improved if the Schopper-Riegler degree lies in the areas marked as preferred or particularly preferred or has the values marked as preferred or particularly preferred.
  • the backing paper is produced from a mixture of a short-fiber pulp and a long-fiber pulp and this mixture is leveled again before the carrier substrate is produced, so that the to obtain the desired Schopper-Riegler degree in the range from 24 to 54 ° SR, preferably in the range from 29 to 49 ° SR, particularly preferably in the range from 34 to 44 ° SR.
  • the short-fiber and long-fiber pulps used before grinding can have a Schopper-Riegler degree that is outside the preferred range.
  • the Schopper-Riegler degree of the short-fiber pulps and long-fiber pulps used is preferably smaller before grinding than after grinding.
  • the packaging system according to the invention is a packaging system, wherein the short-fiber pulp consists entirely or partially, preferably at least to a mass fraction of more than 50%, based on the total mass of the short-fiber pulp, from fibers from hardwoods , preferably made of birch fibers, beech fibers or eucalyptus fibers, and the long-fiber pulp consists entirely or partially, preferably at least more than 50%, based on the total mass of the long-fiber pulp, of fibers of coniferous wood, preferably of pine Fibers, spruce fibers or fir fibers exist.
  • a packaging system is preferred, the backing paper comprising a mass fraction of at least 70% short fiber pulp, preferably comprising between 70 and 75% short fiber pulp, based on the total mass of short fiber pulp and long fiber pulp.
  • the carrier paper consisting of fresh fibers or a mass fraction of greater than or equal to 50%, preferably greater than or equal to 80%, particularly preferably greater than 95% of fresh fibers, based on the total mass of the fibers in the carrier paper.
  • a packaging system is preferred, the paper layer consisting of recycled fibers or a mass fraction of greater than or equal to 50%, preferably greater than or equal to 65%, particularly preferably greater than 85% of recycled fibers, based on the total mass of the fibers in the paper layer.
  • fresh fibers are understood to mean a cellulose which is obtained directly from the vegetable starting material (usually wood or grass).
  • Recycled fibers are to be distinguished from fresh fibers, which have previously been used at least once in other paper or cardboard products, i.e. which consist of waste paper, waste cardboard and / or waste cardboard.
  • the backing paper, the first barrier layer and the second barrier layer can additionally also contain the additives commonly used in paper production, such as sizing agents, pigments (in addition to the pigments already described above), optical brighteners, biocides, dispersants, release agents, defoamers, retention aids, Fixing agents, flocculants, fabric deaerators, wetting agents, leveling agents, slime control agents or thickeners.
  • the additives are usually used to adjust the properties of the coating compositions used to produce the respective layer (e.g. defoamers or retention agents) or to adjust the properties of the resulting layer (e.g. optical brighteners).
  • a packaging system according to the invention is preferred, the backing paper having further layers on the back.
  • the back can be coated with a starch layer, preferably modified starch, particularly preferably modified corn starch.
  • a coating on the back can improve the properties of the packaging system. For example, it is thus possible to ensure that the packaging system can be printed on the back.
  • a packaging system is preferred according to the invention, the packaging system on the second barrier layer having a Tappi 454 om-10 turpentine oil permeability of at least 1300 s, preferably at least 1500 s, particularly preferably at least 1800 s.
  • a packaging system is preferred according to the invention, the packaging system on the second barrier layer determining one based on Tappi 454 om-10 Has water resistance of greater than 240 s, preferably greater than 400 s, particularly preferably greater than 600 s.
  • a packaging system is preferred according to the invention, the packaging system having a water vapor permeability according to DIN 53122-1 at a climate of 23 ° C and 85% humidity of less than or equal to 300 g / (m 2 d), preferably less than or equal to 250 g / (m 2 d ), particularly preferably of less than or equal to 125 g / (m 2 d).
  • the packaging system according to the invention not only has a very high resistance to grease, but also a low water vapor permeability.
  • a low water vapor permeability in packaging is desirable for food, since the packaged food does not dry out prematurely and remains fresh for longer.
  • a packaging system is preferred according to the invention, the packaging system having a fat permeability of at least level 5, preferably of at least level 3, particularly preferably of at least level 1; measured according to method DIN 53116.
  • packaging systems according to the invention can have a KIT value of more than 12 and thus show excellent bed resistance, which is in the same range as the fat resistance of packaging systems that are coated with plastic or aluminum foil.
  • a packaging system is preferred according to the invention, the packaging system having a sealing strength at 500 kPa, 150 ° C. and 1 s of greater than or equal to 3.0 N / 15 mm, preferably having a sealing strength of greater than or equal to 3.5 N / 15 mm, particularly preferably of greater is equal to 4.2 N / 15mm.
  • a packaging system is preferred according to the invention, the weight per unit area of the packaging system being in the range from 30 to 800 g / m 2 , preferably in the range from 35 to 600 g / m 2 , particularly preferably in the range from 40 to 250 g / m 2 ,
  • a packaging system is preferred according to the invention, the packaging system being a paper with a mass per unit area in the range from 30 to 150 g / m 2 , a carton with a mass per unit area of more than 150 g / m 2 and less than 225 g / m 2 or a cardboard with a mass per unit area of more than 225 g / m 2 .
  • a packaging system is preferred according to the invention, the packaging system having a sealing strength at 500 kPa, 150 ° C. and 1 s of greater than or equal to 3.0 N / 15 mm, preferably having a sealing strength of greater than or equal to 3.5 N / 15 mm, particularly preferably of greater is equal to 4.2 N / 15mm.
  • a packaging system is preferred according to the invention, the packaging system having a migration value of mineral oils, in particular MOSH and MOAH, of at least less than 0.6 mg / kg, preferably of at least less than 0.3 mg / kg, particularly preferably of at least less than 0 , 1 mg / kg.
  • the migration value is the amount (in mg) that migrates to a kg of food within 10 days at 40 ° C.
  • a packaging system is preferred according to the invention, the packaging system on the second barrier layer having a Bekk smoothness in the range from 100 to 1200 s determined according to ISO 5627.
  • the Bekk smoothness is not determined on both sides of the packaging system in this case, but only on the second barrier layer of the packaging system.
  • a packaging system is preferred according to the invention, the packaging system containing no fluorine-containing compounds, in particular no fluorinated organic compounds.
  • Another aspect of the present invention relates to the use of a packaging system according to the invention as packaging material, in particular for food (in particular convenience products), electronic products, agricultural products (for example seeds, fertilizers), animal feed, animal feed, washing powder, pharmaceutical products, building materials (for example cement, gypsum, Paste powder), personal care products or cosmetics.
  • Convenience products is a generic term for finished products or ready meals such as canned goods, frozen food, complete dishes for the microwave, baking mixes, instant pudding and bag soups. These products are often ready to eat or simply require further processing.
  • finished products only need to be thawed and warmed up for consumption.
  • it is particularly preferably used for packaging dry, moist and / or frozen foods, such as baked goods, baked-on bread rolls, baking ingredients, fruits, vegetables, fried and / or deep-fried goods, snack goods, sandwiches, bread, burgers, rice, pasta, frozen food - French fries, frozen cream vegetables, breaded schnitzel, meat products, fish products, ready meals, baking mixes, mashed potatoes, baguette soups, instant pasta dishes, sausages, salad trays, salad bowls and / or cheese.
  • dry, moist and / or frozen foods such as baked goods, baked-on bread rolls, baking ingredients, fruits, vegetables, fried and / or deep-fried goods, snack goods, sandwiches, bread, burgers, rice, pasta, frozen food - French fries, frozen cream vegetables, breaded schnitzel, meat products, fish products, ready meals, baking mixes, mashed potatoes, baguette soups, instant pasta dishes, sausages, salad trays,
  • Another aspect of the present invention relates to packaging, in particular food packaging, comprising a packaging system according to the invention.
  • Another aspect of the present invention relates to the use of a packaging system according to the invention in packaging, preferably in food packaging, for a) reducing the water vapor permeability according to DIN 53122-1 to a value of less than or equal to 300 g / (m 2 d) and / or b) reduction the fat permeability with terpetin oil according to Tappi 454 to a value of at least 1300 s and / or c) reduction of the migration value of MOSH and MOAH to less than 0.6 mg / kg.
  • Another aspect of the present invention relates to a method for producing a packaging system, preferably a packaging system according to the invention, comprising the following steps
  • making or providing a paper pulp includes activated carbon
  • step v applying the produced or provided second barrier screed to the first barrier layer produced in step v and then drying the second barrier screed, so that a second barrier layer results.
  • Another aspect of the present invention relates to a packaging system produced by a method according to the invention.
  • the coating compositions are designed such that the layers present in a packaging system according to the invention result from this.
  • the coating compositions are usually in the form of an aqueous dispersion and contain the constituents or compounds (e.g. monomers or crosslinking agents) present in the individual layers which react to form the constituents.
  • the coating compositions can also contain the additives commonly used in papermaking, such as, for example, biocides, dispersants, mold release agents, defoamers or thickeners, which are added to adjust the properties of the coating composition and which are derived from the Coating composition produced layer usually remain.
  • additives commonly used in paper production can be used in the usual amounts.
  • the person skilled in the art knows various techniques which are referred to as brushing, for example: blade brushing, brushing with a film press, cast brushing, curtain coating (“curtain coating “), Knife painting, air brush painting or spray painting. All of these known coating techniques mentioned above are suitable for applying the coating composition according to the invention to a backing paper, preferably a backing paper, which comprises one or more primers or undercoats or which also does not include a undercoat or undercoat. According to the invention, preference is given to curtain coating or the application by means of a doctor blade (roller doctor blade coating). Further embodiments result from the exemplary embodiments and the example explained in more detail in the figures. The figures show:
  • FIG. 1 shows a packaging system 1 according to the invention, which consists of a first paper layer (2) comprising particulate activated carbon, a first barrier layer (4) and a second barrier layer (5).
  • the paper layer (2) has a front side and a rear side opposite the front side, and a first barrier layer 4), which comprises or consists of a binder and a pigment, is arranged on the front side of the paper layer (2).
  • a second barrier layer (5) is arranged (5) on the first barrier layer (4), which comprises or consists of an acrylate copolymer and a wax.
  • the three layers of the packaging system are connected to form a laminate.
  • FIG. 2 shows a packaging system 1 according to the invention, which consists of a first paper layer (2) comprising particulate activated carbon, a carrier paper (3), a first barrier layer (4) and a second barrier layer (5).
  • the backing paper (3) has a front side and a back side opposite the front side, and a first barrier layer (4) is arranged on the front side of the backing paper (3) Contains binder and a pigment or consists thereof.
  • a second barrier layer (5) is arranged (5) on the first barrier layer (4), which comprises or consists of an acrylate copolymer and a wax.
  • the three layers 3, 4 and 5 are connected to form a laminate which, together with the first paper layer (2), forms the packaging system (1) according to the invention.
  • FIG. 3 shows a packaging system 1 according to the invention, which consists of a first paper layer (2) comprising particulate activated carbon, a second paper layer (2.1) comprising particulate activated carbon, a third paper layer (2.2) comprising particulate activated carbon, a backing paper (3), a first barrier layer ( 4) and a second barrier layer (5).
  • the backing paper (3) has a front side and a back side opposite the front side and on the front side of the backing paper (3) there is a first barrier layer (4) which comprises or consists of a binder and a pigment.
  • a second barrier layer (5) is arranged (5) on the first barrier layer (4), which comprises or consists of an acrylate copolymer and a wax.
  • the three layers 3, 4 and 5 are connected to form a laminate which, together with the first paper layer (2), forms the packaging system (1) according to the invention.
  • the first paper layer (2), the second paper layer (2.1) and the third paper layer (2.2) form a composite which, in the embodiment shown, is a laminate composite.
  • FIG. 4 corresponds to Figure 3 with the exception that the composite of first paper layer (2), second paper layer (2.1) and third paper layer (2.2) is not a laminate composite, but a single-layer corrugated cardboard, in which the first Paper layer (2) the outer cover, the second paper layer (2.1) the wave, for example B-wave, C-wave, F-wave etc., and the third paper layer (2.2) forms the inner cover of the corrugated cardboard.
  • FIG. 5 shows the composite system from FIG. 1 with the difference that an additional protective layer (6) is arranged on the outside of the first paper layer.
  • the protective layer (6) contains no activated carbon.
  • FIG. 6 shows the composite system from FIG. 5 with the difference that an additional layer (6.1) is arranged between the first barrier layer (4) and the first paper layer (2).
  • FIG. 7 shows the composite system from FIG. 2 with the difference that an additional protective layer (6) is arranged on the outside of the first paper layer.
  • the protective layer (6) contains no activated carbon.
  • FIG. 8 shows the composite system from FIG. 7 with the difference that an additional protective layer (6.1) is arranged on the inside of the first paper layer.
  • the protective layer (6.1) contains no activated carbon.
  • FIG. 9 shows the composite system from FIG. 1 with the difference that on the back of the first paper layer an additional first barrier layer (4.1), consisting of or comprising a binder and a pigment, and on this additional first barrier layer (4.1) an additional second barrier layer (5.1), consisting of or comprising an acrylate copolymer and a wax, is arranged.
  • a folding boxboard was made from a paper layer comprising particulate activated carbon.
  • the manufacturing process for manufacturing the paper layer is described in EP3175985A1.
  • the folding boxboard has a basis weight of 180 g / m 2 .
  • a backing paper was also used, which was produced from a 1: 1 mixture of short fiber and long fiber pulp with a grinding of 39 ° SR on a paper machine, a paper web provided with resin sizing with a mass per unit area of 40 g / m 2 .
  • the paper substrate produced was calendered at a line load of 80 kN / m and a temperature of 80 ° C.
  • a first barrier screed which was in the form of an aqueous dispersion, was applied to the backing paper produced and this barrier screed was then dried using IR and air drying, so that a first barrier layer with a basis weight of 3 g / m 2 resulted.
  • the composition of the first barrier screed (without taking water into account) is given in Table 1.
  • a second barrier screed which was in the form of an aqueous dispersion, was applied to the first barrier layer produced and this barrier screed was then dried using IR and air drying, so that a second barrier layer with a basis weight of 4 g / m 2 resulted.
  • the composition of the second barrier screed (without taking water into account) is given in Table 1.
  • a bag was made from the laminate of carrier paper, first barrier layer and second barrier layer that fits into the folding box.
  • the inner bag was then placed in the cardboard box.
  • the resulting packaging system showed extremely good resistance to grease and moisture. A migration of mineral oil or other organic substances through the packaging system or to the inner part of the inner bag could not be observed.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Wrappers (AREA)

Abstract

La présente invention concerne un système d'emballage (1), en particulier un système d'emballage alimentaire, comprenant ou étant constitué A) d'une première couche de papier (2) comprenant du charbon actif en particules et présentant une face avant et une face arrière opposée à la face avant, B) d'une première couche barrière (4) disposée sur la face avant et/ou la face arrière de la couche de papier (2) ou sur au moins une face d'un papier support (3) et comprenant ou étant constituée d'un liant et d'un pigment et C) d'une deuxième couche barrière (5) disposée sur la première couche barrière (4) et comprenant ou étant constituée d'un copolymère d'acrylate et d'une cire. La présente invention concerne en outre l'utilisation d'un système d'emballage selon l'invention comme emballage, ainsi qu'un procédé de fabrication d'un système d'emballage selon l'invention.
EP19740511.1A 2018-07-13 2019-07-10 Système de conditionnement Active EP3821075B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018117069.6A DE102018117069A1 (de) 2018-07-13 2018-07-13 Verpackungssystem
PCT/EP2019/068482 WO2020011824A1 (fr) 2018-07-13 2019-07-10 Système d'emballage

Publications (3)

Publication Number Publication Date
EP3821075A1 true EP3821075A1 (fr) 2021-05-19
EP3821075B1 EP3821075B1 (fr) 2023-06-07
EP3821075C0 EP3821075C0 (fr) 2023-06-07

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EP (1) EP3821075B1 (fr)
DE (1) DE102018117069A1 (fr)
PL (1) PL3821075T3 (fr)
WO (1) WO2020011824A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102019101670A1 (de) * 2019-01-23 2020-07-23 Mitsubishi Hitec Paper Europe Gmbh Barrierepapier mit hohem Zellstofffaseranteil
CN113277223B (zh) * 2021-05-10 2022-06-14 广州市鹏铖纸业有限公司 一种缓冲保护纸板
DE102022112863A1 (de) 2022-05-23 2023-11-23 Constantia Pirk Gmbh & Co. Kg Verbund zur Verpackung von Lebensmitteln oder Pharmazeutika
DE102022210442A1 (de) 2022-09-30 2024-04-04 Koehler Innovation & Technology Gmbh Bio-basierte Komposite als Wasserdampfbarriere auf Papier

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Publication number Priority date Publication date Assignee Title
CA1207736A (fr) * 1983-06-17 1986-07-15 James K. Dix Papier renfermant du charbon active
US20020114933A1 (en) * 2000-12-28 2002-08-22 Gould Richard J. Grease masking packaging materials and methods thereof
US7005035B2 (en) * 2002-05-07 2006-02-28 O'neill Kevin J Packaging device and method for absorbing moisture
BRPI0914078B1 (pt) * 2008-10-10 2018-09-18 Dow Global Technologies Llc papel ou papelão revestido e método para formar um papel ou papelão revestido
DE102011105761B4 (de) 2011-06-24 2017-12-14 Smurfit Kappa Hoya Papier Und Karton Gmbh Lebensmittelverpackung
WO2013075918A1 (fr) * 2011-11-22 2013-05-30 Unilever N.V. Matériau d'emballage revêtu
CN103975107B (zh) * 2011-12-06 2016-09-14 巴斯夫欧洲公司 具有阻挡涂层的纸和纸板包装
PL2915919T3 (pl) * 2014-03-03 2018-03-30 Omya International Ag Bariera dla olejów mineralnych
DE102014119572B4 (de) 2014-12-23 2017-07-06 Delfortgroup Ag Umweltfreundliches Verpackungspapier für Lebensmittel
MX2018008292A (es) * 2016-01-06 2018-09-28 Jindal Films Americas Llc Peliculas de polietileno, de baja densidad, lineal, orientadas, recubiertas.

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EP3821075B1 (fr) 2023-06-07
EP3821075C0 (fr) 2023-06-07
PL3821075T3 (pl) 2023-12-04
DE102018117069A1 (de) 2020-01-16

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