EP3821074A1 - HEIßSIEGELFÄHIGES BARRIEREPAPIER - Google Patents
HEIßSIEGELFÄHIGES BARRIEREPAPIERInfo
- Publication number
- EP3821074A1 EP3821074A1 EP19739964.5A EP19739964A EP3821074A1 EP 3821074 A1 EP3821074 A1 EP 3821074A1 EP 19739964 A EP19739964 A EP 19739964A EP 3821074 A1 EP3821074 A1 EP 3821074A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- barrier
- barrier layer
- paper
- heat
- sealable
- 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
Links
- 230000004888 barrier function Effects 0.000 title claims abstract description 248
- 229920001577 copolymer Polymers 0.000 claims abstract description 49
- 239000000049 pigment Substances 0.000 claims abstract description 26
- 239000011230 binding agent Substances 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 16
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 14
- 239000000178 monomer Substances 0.000 claims description 13
- 230000035699 permeability Effects 0.000 claims description 12
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 10
- 229930195734 saturated hydrocarbon Natural products 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 239000005022 packaging material Substances 0.000 claims description 9
- 229920000058 polyacrylate Polymers 0.000 claims description 9
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 8
- -1 triacontan Chemical compound 0.000 claims description 7
- WDQMWEYDKDCEHT-UHFFFAOYSA-N 2-ethylhexyl 2-methylprop-2-enoate Chemical compound CCCCC(CC)COC(=O)C(C)=C WDQMWEYDKDCEHT-UHFFFAOYSA-N 0.000 claims description 6
- BJQWYEJQWHSSCJ-UHFFFAOYSA-N heptacosane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCC BJQWYEJQWHSSCJ-UHFFFAOYSA-N 0.000 claims description 6
- HMSWAIKSFDFLKN-UHFFFAOYSA-N hexacosane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCC HMSWAIKSFDFLKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000001023 inorganic pigment Substances 0.000 claims description 6
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 6
- ZYURHZPYMFLWSH-UHFFFAOYSA-N octacosane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCC ZYURHZPYMFLWSH-UHFFFAOYSA-N 0.000 claims description 6
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 claims description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 5
- 239000005995 Aluminium silicate Substances 0.000 claims description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 235000012211 aluminium silicate Nutrition 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- IUJAMGNYPWYUPM-UHFFFAOYSA-N hentriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC IUJAMGNYPWYUPM-UHFFFAOYSA-N 0.000 claims description 4
- YDLYQMBWCWFRAI-UHFFFAOYSA-N hexatriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC YDLYQMBWCWFRAI-UHFFFAOYSA-N 0.000 claims description 4
- YKNWIILGEFFOPE-UHFFFAOYSA-N pentacosane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCC YKNWIILGEFFOPE-UHFFFAOYSA-N 0.000 claims description 4
- VHQQPFLOGSTQPC-UHFFFAOYSA-N pentatriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC VHQQPFLOGSTQPC-UHFFFAOYSA-N 0.000 claims description 4
- FIGVVZUWCLSUEI-UHFFFAOYSA-N tricosane Chemical compound CCCCCCCCCCCCCCCCCCCCCCC FIGVVZUWCLSUEI-UHFFFAOYSA-N 0.000 claims description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 3
- IGGUPRCHHJZPBS-UHFFFAOYSA-N Nonacosane Natural products CCCCCCCCCCCCCCCCCCCCCCCCCCCCC IGGUPRCHHJZPBS-UHFFFAOYSA-N 0.000 claims description 3
- HOWGUJZVBDQJKV-UHFFFAOYSA-N docosane Chemical compound CCCCCCCCCCCCCCCCCCCCCC HOWGUJZVBDQJKV-UHFFFAOYSA-N 0.000 claims description 3
- BVKCQBBZBGYNOP-UHFFFAOYSA-N octatriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC BVKCQBBZBGYNOP-UHFFFAOYSA-N 0.000 claims description 3
- GWVDBZWVFGFBCN-UHFFFAOYSA-N tetratriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC GWVDBZWVFGFBCN-UHFFFAOYSA-N 0.000 claims description 3
- 239000001293 FEMA 3089 Substances 0.000 claims description 2
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 229910001593 boehmite Inorganic materials 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- DGVMNQYBHPSIJS-UHFFFAOYSA-N dimagnesium;2,2,6,6-tetraoxido-1,3,5,7-tetraoxa-2,4,6-trisilaspiro[3.3]heptane;hydrate Chemical compound O.[Mg+2].[Mg+2].O1[Si]([O-])([O-])O[Si]21O[Si]([O-])([O-])O2 DGVMNQYBHPSIJS-UHFFFAOYSA-N 0.000 claims description 2
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 2
- 229910052622 kaolinite Inorganic materials 0.000 claims description 2
- QHMGJGNTMQDRQA-UHFFFAOYSA-N n-Dotriacontane Natural products CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC QHMGJGNTMQDRQA-UHFFFAOYSA-N 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- OLTHARGIAFTREU-UHFFFAOYSA-N triacontane Natural products CCCCCCCCCCCCCCCCCCCCC(C)CCCCCCCC OLTHARGIAFTREU-UHFFFAOYSA-N 0.000 claims description 2
- FNAZRRHPUDJQCJ-UHFFFAOYSA-N henicosane Chemical compound CCCCCCCCCCCCCCCCCCCCC FNAZRRHPUDJQCJ-UHFFFAOYSA-N 0.000 claims 2
- PXEZIKSRSYGOED-UHFFFAOYSA-N heptatriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC PXEZIKSRSYGOED-UHFFFAOYSA-N 0.000 claims 2
- SNXOSZZZNFRFNZ-UHFFFAOYSA-N nonatriacontane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC SNXOSZZZNFRFNZ-UHFFFAOYSA-N 0.000 claims 2
- POOSGDOYLQNASK-UHFFFAOYSA-N tetracosane Chemical compound CCCCCCCCCCCCCCCCCCCCCCCC POOSGDOYLQNASK-UHFFFAOYSA-N 0.000 claims 2
- JXTPJDDICSTXJX-UHFFFAOYSA-N n-Triacontane Natural products CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC JXTPJDDICSTXJX-UHFFFAOYSA-N 0.000 claims 1
- 238000004806 packaging method and process Methods 0.000 abstract description 25
- 239000000123 paper Substances 0.000 description 168
- 239000000835 fiber Substances 0.000 description 50
- 239000001993 wax Substances 0.000 description 44
- 239000011111 cardboard Substances 0.000 description 16
- 239000006185 dispersion Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 13
- 239000000203 mixture Substances 0.000 description 11
- 239000011888 foil Substances 0.000 description 10
- 235000013305 food Nutrition 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 9
- 239000008199 coating composition Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000004064 recycling Methods 0.000 description 8
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 7
- 239000000654 additive Substances 0.000 description 7
- 239000001913 cellulose Substances 0.000 description 7
- 229920002678 cellulose Polymers 0.000 description 7
- 230000007423 decrease Effects 0.000 description 7
- 238000011835 investigation Methods 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 230000001680 brushing effect Effects 0.000 description 6
- 238000000227 grinding Methods 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000011091 composite packaging material Substances 0.000 description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 4
- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- 125000000129 anionic group Chemical group 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
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- 239000004698 Polyethylene Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 235000019198 oils Nutrition 0.000 description 3
- 239000012860 organic pigment Substances 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 2
- 240000008415 Lactuca sativa Species 0.000 description 2
- 229920000881 Modified starch Polymers 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- 229920006243 acrylic copolymer Polymers 0.000 description 2
- 238000007605 air drying Methods 0.000 description 2
- 235000015173 baked goods and baking mixes Nutrition 0.000 description 2
- 235000012820 baking ingredients and mixes Nutrition 0.000 description 2
- 239000003139 biocide Substances 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 235000013351 cheese Nutrition 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000007766 curtain coating Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 235000021149 fatty food Nutrition 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 235000015927 pasta Nutrition 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- 235000012045 salad Nutrition 0.000 description 2
- 235000013580 sausages Nutrition 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- NPSJHQMIVNJLNN-UHFFFAOYSA-N 2-ethylhexyl 4-nitrobenzoate Chemical compound CCCCC(CC)COC(=O)C1=CC=C([N+]([O-])=O)C=C1 NPSJHQMIVNJLNN-UHFFFAOYSA-N 0.000 description 1
- 239000004808 2-ethylhexylester Substances 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- 235000018185 Betula X alpestris Nutrition 0.000 description 1
- 235000018212 Betula X uliginosa Nutrition 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 244000004281 Eucalyptus maculata Species 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000218657 Picea Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
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- 235000012785 bread rolls Nutrition 0.000 description 1
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- 239000002361 compost Substances 0.000 description 1
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- 239000003431 cross linking reagent Substances 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 235000021186 dishes Nutrition 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000013332 fish product Nutrition 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 235000013611 frozen food Nutrition 0.000 description 1
- 238000000769 gas chromatography-flame ionisation detection Methods 0.000 description 1
- 235000015220 hamburgers Nutrition 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 235000013575 mashed potatoes Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 239000002609 medium Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 210000003097 mucus Anatomy 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 150000004812 organic fluorine compounds Chemical class 0.000 description 1
- 235000021485 packed food Nutrition 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000006072 paste Substances 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 235000015504 ready meals Nutrition 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 235000011890 sandwich Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 235000011888 snacks Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
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- 238000010345 tape casting Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
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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
- D21H19/10—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
-
- 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
- B65D65/42—Applications of coated or impregnated materials
Definitions
- the present invention relates to a heat-sealable barrier paper comprising or consisting of a) a backing paper having a front side and a back side opposite the front side, b) a first barrier layer arranged on the front side of the backing paper, consisting of or comprising a binder and a pigment and c) a second barrier layer arranged on the first barrier layer, consisting of or comprising an acrylate copolymer and a wax.
- the present invention further relates to the use of a barrier paper according to the invention as packaging and a method for producing a barrier paper according to the invention. Further aspects of the present invention result from the following description and the claims.
- Loose foods such as sausage, cheese or baked goods
- 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 cause the packaging material to soften and tear, or contaminate other objects with the grease when you come into contact with the packaging.
- a wood-free, greaseproof "sandwich paper" is often used for packaging fatty foods, which has a certain fat resistance due to the greasy grinding of the fibrous materials.
- the fat resistance of these sandwich papers is often not sufficient.
- a greasy grind is achieved by wide, widely spaced knives or a basalt stone measurement with a long grinding time.
- the fibers are not cut, but squeezed. A strongly swelling fiber mucus is created, a slippery, greasy substance that only drains slowly on the paper machine. The paper gains high density but loses opacity. It becomes translucent. When the fiber is shortened slightly, the term “greasy-long” is used. More shortened fibers are referred to as “greasy-short". If the substrate is mainly made of greasy, short fibers, it has only a low resistance to tearing and tearing.
- 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.
- 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.
- These specks have to be removed during the recycling 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 foods with a basis weight between 20 g / m 2 and 40 g / m 2 , and with a mass fraction of filler which is less than 20% based on the mass of the uncoated paper having.
- 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 2007/000971 A1 describes a sealable paper which consists of a backing paper which can be printed on its front side and which comprises a water vapor barrier layer which consists of a mixture of acrylic polymers and less than 5% by weight of wax consists. On the back of the backing paper, the paper can have a sealable layer which is made from a natural or artificial latex.
- a packaging always consists of different components, namely the packaging material and the packaging aid.
- the goods that are packaged are called packaged goods.
- Packaging aids are materials that increase the strength of the packaging or make it possible in the first place, such as nails, adhesive tapes, clips and strapping, which ensure that crates and boxes are held together. Packing aids also include labels such as labels on beverage bottles, banderoles on cans and closures of bottles and glasses, labeling agents (e.g. warning labels), desiccants, securing agents (e.g. seals, seals) or upholstery agents (corner cushions, air cushions) etc.). Packaging is the name of the container in which the packaged goods (the goods) are packed.
- packaging box, box, crate, sack, can, bin, glass, bottle, canister, bag, shrink hood, etc.
- Materials from which the packaging is formed are referred to as packaging materials.
- packaging materials include, for example, wood, glass, metal, paper and plastic.
- Cardboard is a term for packaging made of corrugated cardboard.
- the object of the present invention is to provide a packaging material which can be fed to paper recycling without the recycling process being impaired by the formation of specks or other rejects, such as foils.
- the packaging material should be designed so that it is suitable for contact with food and has a low water and water vapor permeability and a high fat resistance.
- An additional object of the present invention is to design the barrier paper so that it is designed to be heat-sealable. In addition, it is desirable that it can be biodegraded, ie composted.
- a heat-sealable barrier paper comprising or consisting of a) a backing paper, having a front side and a back side opposite the front side, b) a first barrier layer arranged on the front or back side of the backing paper, consisting of or comprising a binder and a Pigment, and c) a second barrier layer arranged on the first barrier layer, consisting of or comprising an acrylate copolymer and a wax.
- a first barrier layer consisting of or comprising a binder and a pigment
- a second barrier layer consisting of or comprising an acrylate copolymer and a wax
- the barrier paper is recyclable since no foils are used, in particular no plastic or aluminum foils are used.
- a barrier paper according to the invention forms a pulp without specks or other rejects being formed.
- the barrier paper according to the invention can thus be completely fed to paper recycling.
- the combination of acrylic copolymer and wax in the second barrier layer also makes the barrier paper heat-sealable.
- barrier papers according to the invention the use of extruded, glued-on foils or vapor-deposited or glued-on metal foils is completely dispensed with, since the individual layers of the barrier paper according to the invention are produced by applying dispersions. The individual layers of the barrier paper according to the invention are not extruded.
- the wax in the second barrier layer is a wax made of saturated hydrocarbons.
- Our own studies have shown that barrier waxes with a particularly high fat resistance and water resistance can be obtained when using waxes from 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.
- the wax having a melting point above 40 ° C., preferably above 50 ° C., particularly preferably above 60 ° C.
- Barrier papers are preferred according to the invention, the wax having a melting point of less than 100 ° C., preferably less than 90 ° C., particularly preferably less than 80 ° C.
- Barrier papers are preferred according to the invention, 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%, is particularly preferably 20 to 40%, based on the total mass of the second barrier layer.
- barrier papers are preferred, the mass fraction of the wax in the second barrier layer being 5 to 60%, preferably 10 to 60%, particularly preferably 15 to 60%, based on the total mass of the second barrier layer.
- Barrier papers are preferred according to the invention, the wax based on saturated hydrocarbons containing or consisting of one, two, three or more than three alkanes selected from the group consisting of heneicosan, docosan, tricosan, tetracosan, pentacosan, hexacosan, heptacosan, octacosan, nonacosan, triacontan, hentria-contan, dotriacontan, tritriacontan, tetratriacontan, pentatriacontan, hexatriacontan, preferably octatriacontan, preferably hepatriacontan, Group consisting of hexacosan, heptacosan, octacosan, nonacosan and triacontan.
- Barrier papers are particularly preferred according to the invention, the wax based on saturated hydrocarbons being
- 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 up 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 of the 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.
- block-acrylate 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.
- a content of acrylate copolymer, which is present in the second barrier layer in addition to the wax, below a mass fraction of 40% leads to barrier papers in which the mechanical resistance of the second barrier layer decreases disproportionately.
- the mechanical resistance of the second barrier layer is sufficiently high, but it has been shown that the barrier properties to grease, oil and moisture decrease disproportionately.
- Our own studies have shown that particularly good barrier Repapiere with optimal barrier and mechanical properties can be obtained if the content of acrylate copolymer is 20 to 40% by mass.
- 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 in the second barrier layer is 50 to 85% and the mass fraction of the wax in the second barrier layer is 15 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 the second barrier layer.
- a heat-sealable barrier paper according to the invention is preferred, the mass per unit area 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 Range is from 2.9 to 5.2 g / m 2 .
- a heat-sealable barrier paper 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.
- a heat-sealable barrier paper 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 heat-sealable barrier paper 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 heat-sealable barrier paper 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 heat-sealable barrier paper according to the invention is particularly preferred, the pigment in the first barrier layer being shaped in the form of a plate.
- 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 mixing 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 heat-sealable barrier paper 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 heat-sealable barrier paper according to the invention is preferred, the binder in the first barrier layer being an acrylate polymer or acrylate copolymer.
- a heat-sealable barrier paper according to the invention is preferred, the binder in the first barrier layer being a (meth) acrylate polymer or (meth) acrylate copolymer.
- a heat-sealable barrier paper according to the invention is preferred, the binder in the first barrier layer not being an ethylene-vinyl alcohol copolymer (EVOH) or polyvinyl alcohol (PVOH).
- a heat-sealable barrier paper according to the invention is preferred, the binder in the first barrier layer being an anionic acrylate polymer or an anionic acrylate copolymer.
- a heat-sealable barrier paper according to the invention is preferred, the binder in the first barrier layer being an anionic (meth) acrylate polymer or an anionic (meth) acrylate copolymer.
- a (meth) acrylic polymer is understood to mean a polymer which can be prepared from methacrylic acid, acrylic acid or a mixture of methacrylic acid and acrylic acid as monomers.
- a (meth) acrylic copolymer is understood to mean a copolymer which can be prepared from methacrylic acid or acrylic acid and at least one other monomer or which can be prepared from a mixture of methacrylic acid and acrylic acid and at least one other monomer.
- a heat-sealable barrier paper according to the invention is preferred, 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, methylstyrene and styrene.
- a heat-sealable barrier paper according to the invention is preferred, the binder in the first barrier layer being a copolymer, produced using butyl acrylate, acrylonitrile and styrene.
- a heat-sealable barrier paper according to the invention is preferred, the mass per unit area 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 Range is 1.9 to 4.2 g / m 2 .
- other polymers or additives can also be contained in the second barrier layer.
- 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.
- 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 becomes. The term backing paper should not restrict the basis weight.
- a heat-sealable barrier paper according to the invention is preferred, the backing paper being a paper, a cardboard or a cardboard.
- the carrier paper is cardboard, it can be designed, for example, as solid cardboard and corrugated cardboard (eg single corrugation or double corrugation). It is also possible for the heat-sealable barrier paper according to the invention to be designed as an outer cover, inner cover or intermediate cover of a corrugated cardboard.
- a heat-sealable barrier paper according to the invention 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 a cardboard with a mass per unit area of more than 225 g / m 2 .
- a heat-sealable barrier paper 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 , particularly preferably with a mass per unit area in the range of 35 to 50 g / m 2 .
- a heat-sealable barrier paper according to the invention is preferred, the backing paper not containing any organic or inorganic pigments.
- the backing paper is a base paper.
- a barrier paper 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 heat-sealable barrier paper according to the invention is preferred, the backing paper comprising a short-fiber cellulose with a Schopper-Riegler degree of at least 30 ° SR and / or a long-fiber cellulose with a Schopper-Riegler degree of at least 24 ° SR.
- a barrier paper according to the invention is preferred, the backing paper comprising or consisting of a cellulose which comprises a short fiber cellulose and a long fiber cellulose.
- 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 in order to achieve the desired chopper -Riegler degrees 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 barrier paper according to the invention is a barrier paper, the short-fiber pulp being composed wholly or partially, preferably at least to a mass fraction of more than 50%, based on the total mass of the short-fiber pulp, of hardwood fibers consists 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 woods, preferably of pine fibers, Spruce fibers or fir fibers exist.
- a heat-sealable barrier paper according to the invention is preferred, the backing paper comprising a mass fraction of at least 70% short fiber pulp, preferably comprises between 70 and 75% short fiber pulp, based on the total mass of short fiber pulp and long fiber pulp.
- a heat-sealable barrier paper according to the invention is preferred, wherein the backing paper consists 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 backing paper.
- 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 agents, fixatives, 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 (for example defoamers or retention agents) or to adjust the properties of the resulting layer (for example optical brighteners).
- a barrier paper 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.
- the properties of the barrier paper can be improved by a back coating. For example, it is thus possible to ensure that the barrier paper can be printed on the back.
- a barrier paper according to the invention is preferred, the barrier paper having a migration value of MOSH (mineral oil saturated hydrocarbons) and MOAH (mineral oil aromatic hydrocarbons) 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.
- MOSH mineral oil saturated hydrocarbons
- MOAH mineral oil aromatic hydrocarbons
- the Migration determined using modified polyphenylene oxides (MPPO) (Tenax®) according to 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. After storage, the polyphenylene oxide (MPPO; Tenax®) is extracted with hexane for chromatography. In
- a barrier paper is preferred according to the invention, the barrier paper on the second barrier layer having a fat permeability with turpentine oil according to Tappi 454 om-10 of at least 1300 s, preferably of at least 1500 s, particularly preferably of at least 1800 s.
- a barrier paper is preferred according to the invention, the barrier paper on the second barrier layer having a water resistance, determined on the basis of Tappi 454 om-10, of greater than 240 s, preferably greater than 400 s, particularly preferably greater than 600 s.
- a barrier paper is preferred according to the invention, the barrier paper having a water vapor permeability according to DIN 53122-1 at a climate of 23 ° C. and 85% atmospheric 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 barrier paper according to the invention not only has a very high resistance to fat, 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 barrier paper is preferred according to the invention, the barrier paper 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.
- barrier papers according to the invention can have a KIT value of more than 12 and thus have excellent bed resistance. show the same range as the fat resistance of barrier papers coated with plastic or aluminum foil.
- a barrier paper is preferred according to the invention, the barrier paper 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 barrier paper is preferred according to the invention, the mass per unit area of the barrier paper 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 barrier paper is preferred according to the invention, the barrier 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 one Cardboard with a mass per unit area of over 225 g / m 2 .
- a barrier paper is preferred according to the invention, the barrier paper on the second barrier layer having a Bekk smoothness determined according to ISO 5627 in the range from 100 to 1200 s, preferably in the range from 125 to 1000 s, more preferably in the range from 125 to 800 s.
- the Bekk smoothness is not determined on both sides of the barrier paper, but only on the second barrier layer of the barrier paper.
- barrier papers with the Bekk smoothing described above have particularly good properties.
- the paper With a Bekk smoothness of less than 100 s, the paper often has a structure that is too coarse, so that a decrease in the water and / or fat resistance or an increase in the water vapor permeability can often be observed.
- the low smoothness of the paper has an increase in the surface, so that diffusion processes are preferred.
- Our own investigations have also shown that with Bekk smoothing of more than 1200 s no significant improvement in the properties can be obtained.
- a barrier paper that has no further layer on the second barrier layer is preferred according to the invention.
- a barrier paper is preferred according to the invention, the barrier paper having a tear length according to Hoyer a) of less than 30 km transverse to the fiber direction and / or b) of less than 20 km longitudinally to the fiber direction.
- barrier paper is preferred according to the invention, the barrier paper containing no fluorine-containing compounds, in particular no fluorinated organic compounds.
- a heat-sealable barrier paper according to the invention is preferred, the barrier paper not containing any layer which consists exclusively of natural rubber or synthetic rubber (for example styrene-butadiene rubber, butadiene rubber, ethylene-propylene copolymer, polyether amides, epoxy rubber) , Urethane rubber, silicone rubber or polysulfide rubber) contains.
- natural rubber or synthetic rubber for example styrene-butadiene rubber, butadiene rubber, ethylene-propylene copolymer, polyether amides, epoxy rubber
- Urethane rubber silicone rubber or polysulfide rubber
- barrier paper according to the invention relates to the use of a barrier paper according to the invention as packaging material, in particular for foods, electronic products, agricultural products (e.g. seeds, fertilizers), animal feed, washing powder, pharmaceutical products, building materials (e.g. cement, plaster, paste powder) or cosmetics.
- agricultural products e.g. seeds, fertilizers
- animal feed e.g. seeds, fertilizers
- washing powder e.g. water
- pharmaceutical products e.g. cement, plaster, paste powder
- building materials e.g. cement, plaster, paste powder
- a barrier paper according to the invention is particularly preferably used as the inner bag, inlay or inner lining of a packaging box.
- a suitability is also seen in particular for bulk goods, flowable, lumpy and / or powdered packaged goods.
- the goods that are packed are called packaged goods.
- a barrier paper according to the invention as food packaging material, in particular inlay, inner bag, stand-up pouch, tray cover, wrapping paper, underlay paper, cake slice, blister packaging, intermediate and / or release paper.
- it is particularly preferably used for wrapping, underlaying, interposing, covering and / or separating dry, moist and / or frozen foods, such as baked goods, bread rolls, baking ingredients, fruits, vegetables, fried and / or fried goods, snack goods, sandwiches , Bread, burgers, rice, pasta, frozen fries, frozen cream vegetables, breaded schnitzel, meat products, fish products, ready meals, baking mixes, mashed potatoes, baguette soups, instant pasta dishes, sausages, salad containers, salad bowl and / or cheese.
- Another aspect of the present invention relates to packaging, in particular food packaging, comprising a barrier paper according to the invention.
- Another aspect of the present invention relates to the use of a heat-sealable barrier paper 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 of fat permeability with terpetin oil according to Tappi 454 to a value of at least 1300 s.
- Another aspect of the present invention relates to a method for producing a barrier paper (10), preferably a barrier paper according to the invention, comprising the following steps
- step iii applying the manufactured or provided second barrier screed to the first barrier layer produced in step iii and then drying the second barrier screed, so that a second barrier layer results.
- Another aspect of the present invention relates to a heat-sealable barrier paper produced by a method according to the invention.
- the coating composition used in a method according to the invention for producing a barrier paper reference is made here to the comments on the composition of the individual layers.
- the coating compositions are designed in such a way that the layers present in a barrier paper 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 usually remain in the layer produced from the coating composition.
- additives commonly used in papermaking can be used in the usual amounts.
- a backing paper was 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 subjected to a line load of
- 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.
- the resulting barrier paper which could be heat-sealed at 120 ° C., had a weight per unit area of 47 g / m 2 and was measured for its properties. The results are summarized in Table 2.
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Abstract
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DE102018117071.8A DE102018117071A1 (de) | 2018-07-13 | 2018-07-13 | Heißsiegelfähiges Barrierepapier |
PCT/EP2019/068492 WO2020011829A1 (de) | 2018-07-13 | 2019-07-10 | HEIßSIEGELFÄHIGES BARRIEREPAPIER |
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EP (1) | EP3821074B1 (de) |
JP (1) | JP2021530626A (de) |
DE (1) | DE102018117071A1 (de) |
ES (1) | ES2940710T3 (de) |
FI (1) | FI3821074T3 (de) |
WO (1) | WO2020011829A1 (de) |
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JP2020122250A (ja) * | 2019-01-31 | 2020-08-13 | リンテック株式会社 | 耐油紙 |
DE102019114197A1 (de) | 2019-05-27 | 2020-12-03 | Mitsubishi Hitec Paper Europe Gmbh | Aufzeichnungsmaterial umfassend eine bedruckbare Aufzeichnungsschicht, insbesondere eine bedruckbare Glanz- oder Hochglanzschicht, und eine Barriereschicht sowie Herstellungsverfahren und Verwendungen hierfür |
CN113152147A (zh) * | 2021-04-22 | 2021-07-23 | 叶子包装(美国)有限公司 | 一种环保型吸管纸及其制备方法、纸吸管加工工艺 |
DE102022122470A1 (de) * | 2022-09-05 | 2024-03-07 | Koehler Innovation & Technology Gmbh | Barrierepapier |
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2018
- 2018-07-13 DE DE102018117071.8A patent/DE102018117071A1/de active Pending
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2019
- 2019-07-10 JP JP2019557621A patent/JP2021530626A/ja active Pending
- 2019-07-10 ES ES19739964T patent/ES2940710T3/es active Active
- 2019-07-10 WO PCT/EP2019/068492 patent/WO2020011829A1/de active Search and Examination
- 2019-07-10 FI FIEP19739964.5T patent/FI3821074T3/fi active
- 2019-07-10 EP EP19739964.5A patent/EP3821074B1/de active Active
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WO2020011829A1 (de) | 2020-01-16 |
FI3821074T3 (fi) | 2023-04-03 |
ES2940710T3 (es) | 2023-05-10 |
JP2021530626A (ja) | 2021-11-11 |
DE102018117071A1 (de) | 2020-01-16 |
EP3821074B1 (de) | 2023-01-11 |
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