EP2714990A2 - Emballages en papier et en carton comprenant un revêtement de barrière - Google Patents

Emballages en papier et en carton comprenant un revêtement de barrière

Info

Publication number
EP2714990A2
EP2714990A2 EP12722163.8A EP12722163A EP2714990A2 EP 2714990 A2 EP2714990 A2 EP 2714990A2 EP 12722163 A EP12722163 A EP 12722163A EP 2714990 A2 EP2714990 A2 EP 2714990A2
Authority
EP
European Patent Office
Prior art keywords
monomers
copolymer
packaging
weight
barrier layer
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
EP12722163.8A
Other languages
German (de)
English (en)
Other versions
EP2714990B1 (fr
Inventor
Hermann Seyffer
Carmen-Elena Cimpeanu
Ines Pietsch
Axel Weiss
Peter PREISHUBER-PFLÜGL
Heiko Diehl
Marc Bothe
Florian BÜSCH
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Priority to PL12722163T priority Critical patent/PL2714990T3/pl
Priority to EP12722163.8A priority patent/EP2714990B1/fr
Publication of EP2714990A2 publication Critical patent/EP2714990A2/fr
Application granted granted Critical
Publication of EP2714990B1 publication Critical patent/EP2714990B1/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
    • 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
    • D21H19/16—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising curable or polymerisable compounds
    • 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
    • D21H19/60—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper

Definitions

  • the invention relates to a paper or cardboard packaging made of mineral oil loaded, recycled paper with a barrier layer, which can be prepared by applying an aqueous polymer dispersion containing a copolymer which can be prepared by emulsion polymerization of C1 to C4 alkyl (meth ) acrylates, acid monomers and optionally acrylonitrile and other monomers, wherein the glass transition temperature of the copolymer in the range of +10 to +45 ° C.
  • the barrier layer may be on one of the packaging surfaces, or may form one of several layers of a multilayer packaging coating, or may be coated on one side of an inner bag within the package.
  • Cardboard packaging is usually made from recycled paper.
  • the recycled paper may contain residual mineral oil from printing inks commonly used in newspaper printing. Even at room temperature, volatiles of these residues evaporate and, in the case of food packaging, beat on the box-packed foodstuffs, e.g. Noodles, grits, rice or cornflakes down. Most of the inner bags made of polymer films used today also do not provide adequate protection. Studies by the Cantonal Laboratory of Zurich have revealed significant levels of residual oil in food packaged in recycled paper packaging.
  • the volatile mineral oil constituents are predominantly harmful paraffin and naphthenic hydrocarbons and aromatic hydrocarbons, in particular those having 15-25 carbon atoms.
  • a packaging made of paper or cardboard wherein the packaging is made at least in part from mineral oil loaded, recycled paper and wherein the package has at least one barrier layer which can be produced by applying an aqueous polymer dispersion comprising at least one copolymer which can be produced is characterized by emulsion polymerization
  • the glass transition temperature of the copolymer being in the range from +10 to + 45 ° C
  • the barrier layer being at least one or the barrier layer may form at least one of several layers of a multi-layered package coating, or the barrier layer may be coated on at least one side of an inner bag contained within the package.
  • the packaging is particularly suitable for food.
  • Mineral oil contamination means that the paper contains detectable amounts of volatile hydrocarbons by conventional analytical methods, in particular volatile paraffins, volatile naphthenes and / or volatile aromatic hydrocarbons having up to 25 carbon atoms. Volatile hydrocarbons are those having up to 25 C atoms, e.g. from 5 to 22 carbon atoms.
  • the mineral oil load originates from printing inks and comprises volatile paraffins, volatile naphthenes and / or volatile aromatic hydrocarbons.
  • the polymer dispersions to be used according to the invention are dispersions of polymers in an aqueous medium.
  • This may be, for example, completely desalinated water or mixtures of water and a miscible solvent such as methanol, ethanol or tetrahydrofuran.
  • a miscible solvent such as methanol, ethanol or tetrahydrofuran.
  • no organic solvents are used.
  • the solids contents of the dispersions are preferably from 15 to 75 wt .-%, preferably from 40 to 60 wt .-%, in particular greater than 50 wt.%.
  • the solids content can be adjusted, for example, by appropriate adjustment of the emulsion polymerization. set amount of water and / or the amounts of monomers.
  • the mean particle size of the polymer particles dispersed in the aqueous dispersion is preferably less than 400 nm, in particular less than 300 nm. Particularly preferably, the mean particle size is between 70 and 250 nm or between 80 and 150 nm.
  • mean particle size is the dso value of the particle size distribution understood, ie 50 wt .-% of the total mass of all particles have a smaller particle diameter than the dso value.
  • the particle size distribution can be determined in a known manner with the analytical ultracentrifuge (W. Switzerlandie, Makromolekulare Chemie 185 (1984), page 1025-1039).
  • the pH of the polymer dispersion is preferably adjusted to a pH greater than 4, in particular to a pH of between 5 and 9.
  • the copolymers to be used according to the invention are emulsion polymers preparable by emulsion polymerization of free-radically polymerizable monomers.
  • the copolymer is formed from one or more major monomers (a) selected from the group consisting of C1 to C4 alkyl (meth) acrylates.
  • the main monomers (a) are preferably at least 70% by weight, preferably at least 75% by weight, e.g. from 79.5 to 99.5 wt.%, Based on the sum of all monomers used.
  • Particularly preferred main monomers (a) are selected from the group consisting of methyl acrylate, methyl methacrylate, ethyl acrylate and n-butyl acrylate.
  • the copolymer is formed from one or more acid monomers (b).
  • Acid monomers are ethylenically unsaturated, radically polymerizable monomers having at least one acid group, e.g. Monomers with carboxylic acid, sulfonic acid or phosphonic acid groups. Preferred are carboxylic acid groups. Called z. For example, acrylic acid,
  • Methacrylic acid itaconic acid, maleic acid or fumaric acid.
  • the aconic acid preferably, the aconic acid, maleic acid or fumaric acid.
  • the aconic acid preferably, the aconic acid, maleic acid or fumaric acid.
  • Acid monomers (b) selected from acrylic acid and methacrylic acid.
  • the acid monomers (b) are used at 0.1 to 5 wt.%, Preferably at 0.5 to 5 wt.%, Based on the sum of all monomers.
  • the copolymer can optionally be formed as further monomer (c) to 0 to 20 wt.%, Based on the sum of all monomers, of acrylonitrile.
  • the copolymer is formed from 1 to 20% by weight, preferably from 2 to 20% by weight, of acrylonitrile.
  • the copolymer may optionally be formed from other monomers (d) other than the monomers (a) to (c).
  • the amount of further monomers (d) is from 0 to
  • the further monomers (d) can be selected from the group consisting of C 5 -C 20 -alkyl (meth) acrylates, vinyl esters of carboxylic acids containing up to 20 carbon atoms, vinyl aromatics having up to 20 carbon atoms, of acrylonitrile various ethylenically unsaturated nitriles, vinyl halides, vinyl ethers of alcohols containing 1 to 10 carbon atoms, aliphatic Hydrocarbons having 2 to 8 carbon atoms and one or two double bonds or mixtures of these monomers.
  • Examples include (meth) acrylic acid alkyl ester with a C5-C10-AI- kylrest, such as 2-ethylhexyl acrylate.
  • mixtures of (meth) acrylic acid alkyl esters are also suitable.
  • Vinyl esters of carboxylic acids having 1 to 20 carbon atoms are, for. As vinyl laurate, vinyl stearate, vinyl propionate, vinyl versatate and vinyl acetate.
  • Suitable vinylaromatic compounds are vinyltoluene, ⁇ - and p-methylstyrene, ⁇ -butylstyrene, 4-n-butylstyrene, 4-n-decylstyrene and preferably styrene.
  • Example of nitriles is methacrylonitrile.
  • the vinyl halides are chlorine, fluorine or bromine substituted ethylenically unsaturated compounds, preferably vinyl chloride and vinylidene chloride.
  • vinyl ethers are, for.
  • Vinyl ether is preferably from 1 to 4 C-containing alcohols.
  • hydrocarbons having 4 to 8 carbon atoms and two olefinic double bonds may be mentioned butadiene, isoprene and chloroprene.
  • Preferred further monomers (d) are the C5 to C10-alkyl acrylates and methacrylates and vinylaromatics, in particular styrene and mixtures thereof.
  • Further monomers (d) are z.
  • B. also hydroxyl-containing monomers, in particular Ci-Cio-hydroxy xyalkyl (meth) acrylates and (meth) acrylamide.
  • monomers (d) which may also be mentioned are phenyloxyethylglycol mono- (meth) acrylate, glycidyl acrylate, glycidyl methacrylate, amino (meth) acrylates such as 2-aminoethyl (meth) acrylate.
  • Other monomers (d) which may also be mentioned are crosslinking monomers.
  • the copolymer is produced from
  • the monomers (a) to (c) monomers are different from the monomers (a) to (c) monomers.
  • Type and amounts of the monomers of the copolymer are adjusted so that the glass transition temperature of the emulsion polymer in the range of +10 to +45 ° C, preferably from +15 to +40 ° C.
  • the glass transition temperature can be determined by differential scanning calorimetry (ASTM D 3418-08, so-called "midpoint temperature").
  • the preparation of the copolymers can be carried out by emulsion polymerization, it is then an emulsion polymer.
  • ionic and / or nonionic emulsifiers and / or protective colloids or stabilizers are generally used as surface-active compounds in order to assist in the dispersion of the monomers in the aqueous medium.
  • Protective colloids are polymeric compounds which, upon solvation, bind large amounts of water and are capable of stabilizing dispersions of water-insoluble polymers. In contrast to emulsifiers, they usually do not lower the interfacial tension between polymer particles and water.
  • suitable protective colloids can be found in Houben-Weyl, Methods of Organic Chemistry, Volume XIV / 1, Macromolecular substances, Georg-Thieme-Verlag, Stuttgart, 1961, pages 41 1 to 420.
  • Suitable emulsifiers are both anionic and nonionic surfactants whose number average molecular weight is usually below 2000 g / mol or preferably below 1500 g / mol, while the number average molecular weight of the protective colloids is above 2000 g / mol, for example 2000th to 100,000 g / mol, in particular from 5000 to 50,000 g / mol.
  • Anionic and nonionic emulsifiers are preferably used as surface-active substances.
  • Suitable emulsifiers are, for example, ethoxylated Cs to C36 fatty alcohols having a degree of ethoxylation of from 3 to 50, ethoxylated mono-, di- and tri-C 4 - to C 12 -alkylphenyls having a degree of ethoxylation of from 3 to 50, alkali metal salts of dialkyl esters of sulfo - succinic, alkali metal and ammonium salts of Cs to Ci2 alkyl sulfates, alkali metal and ammonium salts of C12 to Cis alkyl sulfonic acids and alkali metal and ammonium salts of C9 to Cis alkylaryl sulfonic acids.
  • emulsifiers and / or protective colloids are used as auxiliaries for dispersing the monomers, the amounts used thereof are, for example, from 0.1 to 5% by weight, based on the monomers.
  • Trade names of emulsifiers are z. Dowfax® A1, Emulan® NP 50, Dextrol® OC 50, Emulsifier 825, Emulsifier 825 S, Emulan® OG, Texapon® NSO, Nekanil® 904 S, Lumiten® I-RA, Lumiten E 3065, Lumiten ® ISC, Disponil® NLS, Disponil LDBS 20, Disponil FES 77, Lutensol AT 18, Steinapol VSL, Emulphor NPS 25.
  • the surfactant is usually in amounts of 0.1 to 10 wt .-%, based on the monomers to be polymerized used.
  • the emulsion polymerization is generally carried out at 30 to 130, preferably 50 to 90 ° C.
  • the polymerization medium may consist of water only, as well as of mixtures of water and thus miscible liquids such as methanol. Preferably, only water is used.
  • the emulsion polymerization can be carried out both as a batch process and in the form of a feed process, including a stepwise or gradient procedure. Preferably, the feed process in which one submits a portion of the polymerization, heated to the polymerization, polymerized and then the rest of the polymerization, usually over several spatially separate feeds, one or more of which monomers in pure or in emulsified form, continuously or gradually supplied.
  • the customary and known auxiliaries such as water-soluble initiators and regulators can be used.
  • Water-soluble initiators for the emulsion polymerization are, for example, ammonium and alkali metal salts of peroxodisulfuric acid, eg. For example, sodium peroxodisulfate, hydrogen peroxide or organic peroxides, z. B. tert-butyl hydroperoxide.
  • so-called reduction-oxidation (red-ox) initiator systems are so-called reduction-oxidation (red-ox) initiator systems.
  • the redox initiator systems consist of at least one mostly inorganic reducing agent and one inorganic or organic oxidizing agent.
  • the oxidation component is z. B.
  • the reduction components are, for. B. alkali metal salts of sulfuric acid, such as. As sodium sulfite, sodium bisulfite, alkali metal salts of the disulfurous acid such as sodium disulfite, bisulfite addition compounds aliphatic aldehydes and ketones, such as acetone bisulfite or reducing agents such as hydroxymethanesulfinic acid and salts thereof, or ascorbic acid.
  • the redox initiator systems can be used with the concomitant use of soluble metal compounds whose metallic component can occur in multiple valence states. Usual Red Ox initiator systems are z.
  • the individual components eg. As the reduction component, mixtures may also be z.
  • the compounds mentioned are usually used in the form of aqueous solutions, the lower concentration being determined by the amount of water acceptable in the dispersion and the upper concentration by the solubility of the compound in question in water.
  • the concentration is 0.1 to 30 wt .-%, preferably 0.5 to 20 wt .-%, particularly preferably 1, 0 to 10 wt .-%, based on the solution.
  • the amount of initiators is generally 0.1 to 10 wt .-%, preferably 0.5 to 5 wt .-%, based on the monomers to be polymerized. It is also possible to use a plurality of different initiators in the emulsion polymerization. To remove the residual monomers, it is customary to add initiator even after the end of the actual emulsion polymerization.
  • polymerization regulators can be used, for. B. in amounts of 0 to 0.8 parts by weight, based on 100 parts by weight of the monomers to be polymerized, whereby the molecular weight is reduced.
  • Suitable z. B. Compounds with a thiol group such as tert-butyl mercaptan, mercaptoethyl propionate, 2-ethylhexyl thioglycolate, thioglycolic acid ethyl ester, mercaptoethanol, mercaptopropyltrimethoxysilane, n-dodecyl mercaptan, or tert-dodecyl mercaptan.
  • a thiol group such as tert-butyl mercaptan, mercaptoethyl propionate, 2-ethylhexyl thioglycolate, thioglycolic acid ethyl ester,
  • regulators without a thiol group can be used, e.g. Terpinolene.
  • the emulsion polymer is prepared using from 0.05 to 0.5% by weight, based on the amount of monomer, of at least one molecular weight regulator.
  • the polymer dispersion used for the coating of the packagings can consist solely of the emulsion polymer dispersed in water for the use according to the invention. However, it may also contain other additives, e.g. Fillers, antiblocking agents, dyes, leveling agents or thickeners.
  • the at least one copolymer is used in combination with up to 1 part by weight of platelet-shaped pigments, based on 1 part by weight of copolymer.
  • platelet-shaped pigments are talc, clay or mica (mica). Preference is given to talc.
  • Preferred form factors (length to thickness ratio) are greater than 10.
  • the polymer dispersion forms a barrier layer after coating the substrate.
  • a barrier layer is particularly present when a copolymer is used which causes a coating with the copolymer to have a permeability to gaseous n-hexane less than 50 g / m 2 d, preferably less than 10 g / m 2 d, more preferably less than 5 g / m 2 d or less than 1 g / m 2 d at 23 ° C and a weight of 20-25 g / m 2 on paper (see measuring method in the examples below).
  • the content of the at least one copolymer in the dispersion used for the coating is preferably at least 1 wt .-%, in particular at least 5 wt .-% and up to 60 or up to 75 wt.%.
  • the content of the at least one copolymer in the aqueous dispersion is 15 to 75% by weight, or 40 to 60% by weight.
  • Preferred aqueous dispersions of the copolymers have a viscosity of 10 to 150,000 mPas, or 200 to 5000 mPas (measured with a Brookfield viscometer at 20 ° C., 20 rpm, spindle 4) at a pH of 4 and a temperature of 20 ° C. ).
  • the mean particle size of the copolymer particles dispersed in the aqueous dispersion is, for example, from 0.02 to 100 ⁇ m, preferably from 0.05 to 10 ⁇ m. You can z. Example by means of optical microscopy, light scattering or freeze-fracture electron microscopy.
  • the carrier substrates are coated with an aqueous dispersion of at least one of the copolymers described above.
  • Suitable substrates are in particular paper, cardboard and polymer films.
  • the dispersions used for coating may contain other additives or adjuvants, e.g. Thickener for adjusting the rheology, wetting agents or binders.
  • the application can be carried out, for example, on coating machines in such a way that the coating composition is applied to paper, cardboard or to a carrier film made of a plastic. If web-shaped materials are used, the polymer dispersion is usually applied from a trough over an applicator roll and leveled with the aid of an air brush. Other ways to apply the coating succeed, for example, with the aid of the reverse gravure method, with a spray method or with a roller blade or with other coating methods known to the person skilled in the art.
  • the carrier substrate is coated on at least one side, ie it can be coated on one side or on both sides. Preferred application methods for paper and cardboard are curtain coating, air knife, bar brushing or knife coating.
  • Preferred coating methods for film coating are doctor blade, wire bar, air brush, reverse roll coating method, countergraduate coating, pouring head or die.
  • the amounts applied to the sheet-like materials are preferably 1 to 10 g (polymer, solids) per m 2 , preferably 2 to 7 g / m 2 for films, or preferably 5 to 30 g / m 2 for paper or board.
  • the solvent or water is evaporated.
  • the material can be passed through a dryer channel, which can be equipped with an infrared radiation device. Thereafter, the coated and dried material is passed over a cooling roll and finally wound up.
  • the thickness of the dried coating is preferably at least 1 ⁇ , in particular 1 to 50 ⁇ , more preferably 2 to 30 ⁇ or 5 to 30 ⁇ .
  • the barrier layer may be located on at least one of the packaging surfaces. It may also form at least one of several layers of a multi-layered package coating or it may be coated on at least one side of an inner bag in the package.
  • the barrier coating may be applied directly to a surface of the substrate, however, other layers may be present between the substrate and the barrier coating, e.g. B. primer layers, other barrier layers or colored or black and white ink layers.
  • the barrier layer is preferably located on the inner, the packaged goods facing side of the package.
  • the inner bag is preferably made of a polymer film.
  • the material of the inner bag is preferably selected from polyolefins, preferably polyethylene or oriented polypropylene, which polyethylene may have been produced by both high pressure and low pressure polymerization of ethylene.
  • the carrier film may be previously subjected to a corona treatment.
  • suitable carrier films are, for example, films of polyester, such as polyethylene terephthalate, films of polyamide, polystyrene and polyvinyl chloride.
  • the support material is biodegradable films, e.g.
  • Suitable copolyesters are e.g. formed from alkanediols, in particular C2- to C8-alkanediols, such as e.g. 1, 4-butanediol, from aliphatic dicarboxylic acids, in particular C2 to C8 dicarboxylic acids such. Adipic acid and from aromatic dicarboxylic acids such as e.g. Terephthalic acid.
  • the thickness of the carrier films is generally in the range of 10 to 200 ⁇ .
  • the coated substrates In order to obtain special surface or coating properties of the films and packaging materials, for example a good printability, even better barrier or blocking behavior, good water resistance, it may be advantageous to coat the coated substrates with cover layers which additionally impart these desired properties or to subject the barrier coating to corona treatment.
  • the substrates precoated according to the invention show good overcoatability. It may be overcoated again according to a method mentioned above or in a continuous process without intermediate winding and unwinding, e.g. the film or paper are coated at the same time several times, e.g. using a curtain coater.
  • the barrier layer according to the invention is located inside the system, the surface properties are then determined by the cover layer.
  • the cover layer has good adhesion to the barrier layer.
  • the invention also provides a process for producing a packaging, wherein a composition in the form of an aqueous polymer dispersion described above is provided and applied to a packaging substrate or to the surface of an inner bag. is brought and dried, wherein the aqueous polymer dispersion contains at least one of the above-described copolymers.
  • the invention also provides the use of an aqueous polymer dispersion comprising at least one of the copolymers described above for producing a barrier layer against volatile mineral oil constituents, in particular for producing packaging, in particular packaging for foodstuffs.
  • the substrates coated according to the invention show an outstanding barrier effect against volatile mineral oil constituents.
  • the coated substrates can be used as such as packaging.
  • the coatings have very good mechanical properties, and show e.g. good block behavior.
  • the indication of a content refers to the content in aqueous solution or dispersion.
  • a 10 ⁇ 10 cm blotter paper sheet was coated with the respective polymer and contacted with a test fat (e.g., 2 ml of oleic acid).
  • a test fat e.g., 2 ml of oleic acid.
  • the area of the greased field is rated after up to 16 hours at 60 ° C. Depending on the quality, the breakdown is evaluated after x hours.
  • Donor paper of 30g / m 2 loaded with 1% Gravex 913 (Shell, mineral oil for printing inks)
  • acceptor commercially available PE film 20 ⁇ , LLDPE with density 0.915 g / cm 3
  • This package (basic dimensions 10x10cm) was wrapped on all sides with aluminum foil.
  • the experimental system was stored at 60 ° C and examined by periodically cutting a strip of the acceptor sheet, extracting with n-hexane 2h / 25 ° C, and measuring the content of 15-25 carbon number mineral oil ingredients by on-line HPLC-GC.
  • the breakthrough time for the breakthrough of the mineral oil constituents by the barrier material was determined.
  • the breakthrough time is the time after which mineral oil constituents above the detection limit are detected for the first time in the extract.
  • test 2 S / butadiene / AS copolymer, oleic acid - completely greased without hexane barTg 20 ° C (test 2)
  • the results show that coatings with a fat barrier effect can not be concluded to be effective as a barrier to gaseous mineral oil constituents.
  • the tested MMA / MA AS copolymer has a mineral oil barrier, if it is coated on polyethylene, for example. However, it was found that this polymer is probably not good enough to form a film due to the high glass transition temperature on paper and the coating has defects through which the test oil can penetrate.

Landscapes

  • Paper (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Paints Or Removers (AREA)
  • Packages (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

L'invention concerne un emballage en papier ou en carton à partir de papier recyclé chargé en huile minérale. Ledit emballage comporte une couche de barrière, laquelle peut être fabriquée par utilisation d'une dispersion aqueuse de polymère contenant un copolymère, lequel peut être préparé par polymérisation en émulsion à partir de (méth)acrylates d'alkyle en C1 à C4, des monomères d'acide, par exemple de l'acide acrylique ou de l'acide méthacrylique, de 0 à 20 % en poids d'acrylonitrile et de 0 à 10 % en poids d'autres monomères, la température de transition vitreuse du copolymère étant comprise dans la plage allant de +10 à +45 °C. La couche de barrière peut se trouver sur l'une des surfaces de l'emballage ou former une ou plusieurs couches d'un revêtement d'emballage multicouche ou se trouver en tant que revêtement sur un côté d'un sachet intérieur se trouvant dans l'emballage.
EP12722163.8A 2011-05-30 2012-05-23 Emballages en papier et en carton comprenant un revêtement de barrière Active EP2714990B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL12722163T PL2714990T3 (pl) 2011-05-30 2012-05-23 Opakowania papierowe i tekturowe z powłoką barierową
EP12722163.8A EP2714990B1 (fr) 2011-05-30 2012-05-23 Emballages en papier et en carton comprenant un revêtement de barrière

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP11168097 2011-05-30
EP12722163.8A EP2714990B1 (fr) 2011-05-30 2012-05-23 Emballages en papier et en carton comprenant un revêtement de barrière
PCT/EP2012/059551 WO2012163749A2 (fr) 2011-05-30 2012-05-23 Emballages en papier et en carton comprenant un revêtement de barrière

Publications (2)

Publication Number Publication Date
EP2714990A2 true EP2714990A2 (fr) 2014-04-09
EP2714990B1 EP2714990B1 (fr) 2018-08-22

Family

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Family Applications (1)

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EP12722163.8A Active EP2714990B1 (fr) 2011-05-30 2012-05-23 Emballages en papier et en carton comprenant un revêtement de barrière

Country Status (14)

Country Link
EP (1) EP2714990B1 (fr)
JP (1) JP6214525B2 (fr)
CN (1) CN103547735B (fr)
AU (1) AU2012264927A1 (fr)
BR (1) BR112013030513A2 (fr)
CA (1) CA2835273A1 (fr)
ES (1) ES2698846T3 (fr)
MX (1) MX2013013615A (fr)
PL (1) PL2714990T3 (fr)
PT (1) PT2714990T (fr)
RU (1) RU2013158460A (fr)
TR (1) TR201815930T4 (fr)
WO (1) WO2012163749A2 (fr)
ZA (1) ZA201309722B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3178648A1 (fr) 2015-12-09 2017-06-14 Cargill, Incorporated Revêtements de protection

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9328247B2 (en) 2011-11-10 2016-05-03 Basf Se Paper coating slip additive comprising acid monomer, associative monomer and nonionic monomer
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PL2714990T3 (pl) 2019-02-28
MX2013013615A (es) 2014-01-08
WO2012163749A2 (fr) 2012-12-06
ES2698846T3 (es) 2019-02-06
BR112013030513A2 (pt) 2017-10-17
CA2835273A1 (fr) 2012-12-06
AU2012264927A1 (en) 2013-12-19
TR201815930T4 (tr) 2018-11-21
JP6214525B2 (ja) 2017-10-18
WO2012163749A3 (fr) 2013-04-11
JP2014516884A (ja) 2014-07-17
CN103547735A (zh) 2014-01-29
ZA201309722B (en) 2016-08-31
PT2714990T (pt) 2018-11-29
CN103547735B (zh) 2016-11-23
RU2013158460A (ru) 2015-07-10
EP2714990B1 (fr) 2018-08-22

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