EP1720713A1 - Verfahren zur herstellung eines thermopapiers - Google Patents
Verfahren zur herstellung eines thermopapiersInfo
- Publication number
- EP1720713A1 EP1720713A1 EP05707715A EP05707715A EP1720713A1 EP 1720713 A1 EP1720713 A1 EP 1720713A1 EP 05707715 A EP05707715 A EP 05707715A EP 05707715 A EP05707715 A EP 05707715A EP 1720713 A1 EP1720713 A1 EP 1720713A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- curtain coating
- kaolin
- caicinated
- application suspension
- suspension
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 94
- 239000000725 suspension Substances 0.000 claims abstract description 47
- 239000000049 pigment Substances 0.000 claims abstract description 38
- 238000007766 curtain coating Methods 0.000 claims abstract description 33
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 26
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 26
- 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 abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 239000011230 binding agent Substances 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 7
- 239000010410 layer Substances 0.000 claims description 62
- 230000008569 process Effects 0.000 claims description 34
- 229920001577 copolymer Polymers 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 13
- 239000000835 fiber Substances 0.000 claims description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 8
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 8
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 7
- -1 alkali metal salts Chemical class 0.000 claims description 7
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 7
- 229920000881 Modified starch Polymers 0.000 claims description 6
- 235000019426 modified starch Nutrition 0.000 claims description 6
- 238000000518 rheometry Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 239000004606 Fillers/Extenders Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical class [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 4
- 239000013543 active substance Substances 0.000 claims description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 229920000126 latex Polymers 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 235000010413 sodium alginate Nutrition 0.000 claims description 4
- 235000019698 starch Nutrition 0.000 claims description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 4
- FPIAKQHHSBQHDE-UHFFFAOYSA-N 2-methylprop-2-enoic acid;prop-2-enamide;prop-2-enoic acid Chemical compound NC(=O)C=C.OC(=O)C=C.CC(=C)C(O)=O FPIAKQHHSBQHDE-UHFFFAOYSA-N 0.000 claims description 3
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical class O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 claims description 3
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 3
- 229920000147 Styrene maleic anhydride Polymers 0.000 claims description 3
- 235000010216 calcium carbonate Nutrition 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical class [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 3
- 239000001095 magnesium carbonate Substances 0.000 claims description 3
- 239000000391 magnesium silicate Substances 0.000 claims description 3
- 235000012243 magnesium silicates Nutrition 0.000 claims description 3
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 3
- 230000001235 sensitizing effect Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 229920001897 terpolymer Polymers 0.000 claims description 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 2
- 229920003043 Cellulose fiber Polymers 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical class C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 2
- 239000005977 Ethylene Substances 0.000 claims description 2
- 229910000503 Na-aluminosilicate Inorganic materials 0.000 claims description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 2
- 230000003712 anti-aging effect Effects 0.000 claims description 2
- 238000009499 grossing Methods 0.000 claims description 2
- 235000011160 magnesium carbonates Nutrition 0.000 claims description 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002985 plastic film Substances 0.000 claims description 2
- 229920006255 plastic film Polymers 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 229920000193 polymethacrylate Polymers 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims description 2
- 235000012217 sodium aluminium silicate Nutrition 0.000 claims description 2
- 235000010215 titanium dioxide Nutrition 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims 1
- 230000004720 fertilization Effects 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 description 9
- 238000005755 formation reaction Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000001993 wax Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 150000001447 alkali salts Chemical class 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 239000001023 inorganic pigment Substances 0.000 description 3
- 239000012860 organic pigment Substances 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 238000007651 thermal printing Methods 0.000 description 3
- AGPLQTQFIZBOLI-UHFFFAOYSA-N 1-benzyl-4-phenylbenzene Chemical group C=1C=C(C=2C=CC=CC=2)C=CC=1CC1=CC=CC=C1 AGPLQTQFIZBOLI-UHFFFAOYSA-N 0.000 description 2
- WLTCCDHHWYAMCG-UHFFFAOYSA-N 2-phenylmethoxynaphthalene Chemical compound C=1C=C2C=CC=CC2=CC=1OCC1=CC=CC=C1 WLTCCDHHWYAMCG-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- BCMCBBGGLRIHSE-UHFFFAOYSA-N 1,3-benzoxazole Chemical class C1=CC=C2OC=NC2=C1 BCMCBBGGLRIHSE-UHFFFAOYSA-N 0.000 description 1
- FDLFMPKQBNPIER-UHFFFAOYSA-N 1-methyl-3-(3-methylphenoxy)benzene Chemical compound CC1=CC=CC(OC=2C=C(C)C=CC=2)=C1 FDLFMPKQBNPIER-UHFFFAOYSA-N 0.000 description 1
- JENMQODMHFMXSM-UHFFFAOYSA-N 1-methyl-4-(4-phenylphenoxy)benzene Chemical group C1=CC(C)=CC=C1OC1=CC=C(C=2C=CC=CC=2)C=C1 JENMQODMHFMXSM-UHFFFAOYSA-N 0.000 description 1
- WQFYAGVHZYFXDO-UHFFFAOYSA-N 2'-anilino-6'-(diethylamino)-3'-methylspiro[2-benzofuran-3,9'-xanthene]-1-one Chemical compound C=1C(N(CC)CC)=CC=C(C2(C3=CC=CC=C3C(=O)O2)C2=C3)C=1OC2=CC(C)=C3NC1=CC=CC=C1 WQFYAGVHZYFXDO-UHFFFAOYSA-N 0.000 description 1
- XCSGHNKDXGYELG-UHFFFAOYSA-N 2-phenoxyethoxybenzene Chemical compound C=1C=CC=CC=1OCCOC1=CC=CC=C1 XCSGHNKDXGYELG-UHFFFAOYSA-N 0.000 description 1
- MTMKZABGIQJAEX-UHFFFAOYSA-N 4,4'-sulfonylbis[2-(prop-2-en-1-yl)phenol] Chemical compound C1=C(CC=C)C(O)=CC=C1S(=O)(=O)C1=CC=C(O)C(CC=C)=C1 MTMKZABGIQJAEX-UHFFFAOYSA-N 0.000 description 1
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 1
- ZTILAOCGFRDHBH-UHFFFAOYSA-N 4-(4-propan-2-yloxyphenyl)sulfonylphenol Chemical compound C1=CC(OC(C)C)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 ZTILAOCGFRDHBH-UHFFFAOYSA-N 0.000 description 1
- MOPBWASVAUDDTC-UHFFFAOYSA-N 4-[2-(3,4-dimethylphenyl)ethyl]-1,2-dimethylbenzene Chemical compound C1=C(C)C(C)=CC=C1CCC1=CC=C(C)C(C)=C1 MOPBWASVAUDDTC-UHFFFAOYSA-N 0.000 description 1
- VHLLJTHDWPAQEM-UHFFFAOYSA-N 4-[2-(4-hydroxyphenyl)-4-methylpentan-2-yl]phenol Chemical compound C=1C=C(O)C=CC=1C(C)(CC(C)C)C1=CC=C(O)C=C1 VHLLJTHDWPAQEM-UHFFFAOYSA-N 0.000 description 1
- JKYWRCFCKIREMM-UHFFFAOYSA-N 4-butyl-2-cyclohexyl-5-methylphenol Chemical compound C1=C(C)C(CCCC)=CC(C2CCCCC2)=C1O JKYWRCFCKIREMM-UHFFFAOYSA-N 0.000 description 1
- FKIOYBLZUCCLTL-UHFFFAOYSA-N 4-butyl-2-tert-butyl-5-methylphenol Chemical compound CCCCC1=CC(C(C)(C)C)=C(O)C=C1C FKIOYBLZUCCLTL-UHFFFAOYSA-N 0.000 description 1
- OAHMVZYHIJQTQC-UHFFFAOYSA-N 4-cyclohexylphenol Chemical compound C1=CC(O)=CC=C1C1CCCCC1 OAHMVZYHIJQTQC-UHFFFAOYSA-N 0.000 description 1
- REJHVSOVQBJEBF-OWOJBTEDSA-N 5-azaniumyl-2-[(e)-2-(4-azaniumyl-2-sulfonatophenyl)ethenyl]benzenesulfonate Chemical compound OS(=O)(=O)C1=CC(N)=CC=C1\C=C\C1=CC=C(N)C=C1S(O)(=O)=O REJHVSOVQBJEBF-OWOJBTEDSA-N 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- PGSVGPYLZIZDBX-UHFFFAOYSA-N [3-(benzenesulfonylcarbamoylamino)phenyl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)OC1=CC=CC(NC(=O)NS(=O)(=O)C=2C=CC=CC=2)=C1 PGSVGPYLZIZDBX-UHFFFAOYSA-N 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- FPFZBTUMXCSRLU-UHFFFAOYSA-N bis[(4-methylphenyl)methyl] oxalate Chemical compound C1=CC(C)=CC=C1COC(=O)C(=O)OCC1=CC=C(C)C=C1 FPFZBTUMXCSRLU-UHFFFAOYSA-N 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- SMBKCSPGKDEPFO-UHFFFAOYSA-L calcium;docosanoate Chemical class [Ca+2].CCCCCCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCCCCCC([O-])=O SMBKCSPGKDEPFO-UHFFFAOYSA-L 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- ZYZXGWGQYNTGAU-UHFFFAOYSA-N dibenzyl oxalate Chemical compound C=1C=CC=CC=1COC(=O)C(=O)OCC1=CC=CC=C1 ZYZXGWGQYNTGAU-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000416 hydrocolloid Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- JHOKTNSTUVKGJC-UHFFFAOYSA-N n-(hydroxymethyl)octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCO JHOKTNSTUVKGJC-UHFFFAOYSA-N 0.000 description 1
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 235000019809 paraffin wax Nutrition 0.000 description 1
- 235000019271 petrolatum Nutrition 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- QJWFJOSRSZOLKK-UHFFFAOYSA-N prop-2-enamide Chemical compound NC(=O)C=C.NC(=O)C=C QJWFJOSRSZOLKK-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical class OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
Definitions
- the invention relates to a method for producing a thermal paper with a carrier substrate, an intermediate pigment layer, a thermal reaction layer and optionally one or more further intermediate layers and / or top layers, the intermediate pigment layer with an aqueous application suspension containing pigments, binders and optionally further application additives by means of the curtain Coating process is formed.
- a method of the type described above results from DE 101 96 052 Part 1.
- This method also uses the curtain coating method to form different layers, in particular the pigment intermediate layer mentioned.
- the known teaching is intended to replace other conventional coating processes with the associated disadvantages. These common processes are the air knife, doctor blade, bar and reversing roll coating processes.
- the products produced with this are said to pose problems, in particular the quality of the coating layers should be too poor and the top layer should have fine holes.
- the fine holes lead to an undesirable inhomogeneity, which leads to incorrect image reproduction during use.
- These processes also do not allow high operating speeds and therefore do not show the remarkable productivity. It is assumed in DE 101 96 052 Tl that it is known that high-quality coating layers can be obtained with the curtain coating process.
- the present invention has a particularly elegant solution found, the operating speed of the curtain coating process can be significantly more than doubled, can even be seven and multiple times.
- an aqueous application suspension containing caicinated kaolin and having a solids content of about 25 to 75% by weight is applied and dried by means of the curtain coating method at an operating speed of at least about 500 m / min.
- the inventors of the claimed process attempted to produce an advantageous product simply and economically using a variety of pigments that are common in the present technology.
- the caicinated kaolin is of particular advantage.
- the pigments calcium carbonate, aluminum oxides, magnesium carbonate and the like do not provide the desired effects, in particular the color intensity of the thermal layer applied to the intermediate layer is inadequate due to the poor thermal insulation behavior of these pigments in thermal printing.
- the caicinated kaolin, which is used according to the invention proves to be of particular value because, due to the calcination, it has an advantageous leaf structure which allows favorable micro-air inclusions, which leads to improved thermal insulation behavior in thermal printing.
- the heat rays are jammed and reflected, so that the thermal energy is largely available for the color formation reactions in the thermal reaction layer.
- favorable results are achieved when the average grain size d 50 is approximately 1.0 to 3.0 ⁇ m (measured using the laser diffraction measurement method).
- the aqueous application suspension containing the caicinated kaolin When carrying out the process according to the invention, it is advantageous for the aqueous application suspension containing the caicinated kaolin to have a solids content of about 25 to 75% by weight, a solids content of about 35 to 60% by weight being preferred. If the upper value is exceeded, the viscosity of the application suspension becomes too high, which impairs or makes an advantageous process management impossible. A drop below the value of about 25% by weight does not lead to the desirable productivity.
- the application suspension containing the caicinated kaolin is in particular adjusted to the following advantageous general conditions: it should have a viscosity of approximately 150 to 1500 mPas (Brookfield, 100 rpm, 25 ° C.), in particular approximately 250 to 900 mPas, ins - Especially also with regard to the findings made above regarding the general conditions of the solids content of the order suspension.
- the surface tension of the application suspension is set between approximately 23 and 60 mN / m, in particular between approximately 27 and 40 mN / m (static ring method according to Du Noüy).
- the additives customary in the form of processing aids are added to the aqueous application suspension containing the caicinated kaolin, in particular in the form of surface-active substances, retention aids and / or rheology aids.
- the surface-active substances the alkali C 2 -C 2 -dialkyl sulfosuccinates, and among the retention aids, the carboxymethyl celluloses and the polyacrylamides, among the rheology aids, are the higher molecular weight, water-soluble starch derivatives, carboxymethyl celluloses, sodium alginates and polyvinyl alcohols. ly (meth) acrylates are preferred.
- the invention is not subject to any significant restriction with regard to the particle size of the calcined kaolin. It corresponds to the rule and is expedient for the particle size to be between approximately 0.1 and 10 ⁇ m, in particular between approximately 0.1 and 2 ⁇ m. If the value of 10 ⁇ m is exceeded, this generally leads to a lack of smoothness or to an undesirably rough surface. In addition, the resolution of the image is impaired. If the value falls below about 0.1 ⁇ m, the image reproduction, in particular the color intensity, is impaired.
- the invention is also not subject to any significant limitation in the choice of the respective carrier substrate.
- the usual carrier substrates can be used.
- This can be, for example, a conventional paper backing based on cellulose fiber, but also a synthetic paper backing, the fibers of which are wholly or partly made of synthetic material. fabric fibers. Basically, it can also be a plastic film.
- the basis weight of the carrier is not subject to any significant restriction. When choosing conventional paper supports, it is advantageous that their basis weight is between about 40 and 120 g / m 2 .
- a long fiber content of up to about 40% by weight, in particular between about 5 and 40% by weight, and a short fiber content of between about 60 and 95% by weight, in particular between about 60 and 80% by weight, are preferred. The long fiber content leads to an improvement in the strength of the backing paper.
- the aqueous application suspension used to form the intermediate pigment layer and containing the caicinated kaolin necessarily contains a binder. It is preferred if the binder is in the form of water-soluble starches, starch derivatives, hydroxyethyl celluloses, polyvinyl alcohols, modified polyvinyl alcohols, sodium polyacrylates, acrylamide (meth) acrylate copolymers, acrylamide-acrylate-methacrylate terpolymers, alkali metal salts of styrene-maleic anhydride copolymers and / or alkali salts of ethylene-maleic anhydride copolymers. Such materials result in a coating that is water soluble.
- the binder serves to connect the mentioned intermediate layer favorably with the carrier substrate, but also to ensure optimal binding to the subsequent layer. It is within the technical considerations to select a particularly suitable binder or a mixture of binders in individual cases.
- the application weight of the application suspension containing the caicinated kaolin is not critically limited. It is advantageous if a maximum value of about 40 g / m 2 , based on dry substance, is not exceeded. If the value of about 30 g / m 2 is exceeded, this is economically unfavorable, since there is no relevant improvement in the desired effects. It is particularly preferred if the maximum value is approximately 25 g / m 2 .
- the opti- Mated application weight is between about 2 and 15 g / m 2 , based on dry matter, in particular between about 4 and 8 g / m 2 .
- so-called "extender pigments” are preferably added to the calcined kaolin in the aqueous application suspension to form the pigment intermediate layer, e.g. for cost optimization in order to influence certain rheological properties, such as the flow behavior of the order suspension.
- This can be, for example, both inorganic and organic pigments.
- inorganic pigments natural or precipitated calcium carbonate, clays, diathesis earths, aluminum oxides, silicas, magnesium silicates, magnesium carbonates and the like are preferred.
- the organic pigments those which have been shown to be hollow spheres have proven particularly advantageous.
- the wall of these hollow spheres preferably consists of the styrene-acrylate copolymers.
- Organic pigments which do not have such cavities, such as urea-formaldehyde condensates and the like, can also be used.
- one or more further pigment intermediate layers are formed on the first pigment intermediate layer using a caicinated kaolin-containing application suspension by means of the curtain coating process, the sequence of the intermediate layers being able to be changed depending on the objective pursued.
- the procedure can be such that one or more further moist pigment intermediate layers are formed immediately after the formation of the moist first pigment intermediate layer, which is followed by an overall drying process.
- the intermediate layer formed first is dried and the next layers are formed thereon and these are dried.
- the curtain coating method which offers various technological possibilities with regard to the formation of liquid films or the liquid film emerging from the curtain coating head, is preferably also used here.
- the curtain coating process is preferably used under the conditions described to form the thermal reaction layer, a corresponding aqueous application suspension using conventional additives being used which either favor the application as such or the properties of the end product.
- this aqueous application suspension optionally contains, for example, sensitizing melting aids, other conventional additives, such as, in particular, lubricants, rheological aids, optical brighteners and / or fluorescent substances.
- the color formers are in the form of 2-anilino-3-methyl-6-diethylamino-fluoran, 2-anilino-3-methyl-6-di-n-butylamino-fluoran, 2-anilino-3 -methyl-6- (N-ethyl-, Np-toluidino-amino) -fluorane, 2-anilino-3-methyl-6- (N-methyl-, N-propyl-amino) -fluorane, and / or 3.3- Bis- (4-dimethylaminophenyl) -6-dimethylamino-phthalide, the color developers in the form of phenol derivatives such as 2,2-bis- (4-hydroxyphenyl) propane, bis- (4-hydroxyphenyl) sulfone, 4-hydroxy -4 '-iso-propoxy-diphenyl-sulfone, bis- (3-allyl-4-hydroxy-phenyl) -sulfone, 2,2-bis- (4
- stearic acid amide fatty acid alkanolamides such.
- B. Carnauba wax and / or fatty acid metal soaps such.
- the rheological aids in the form of water-soluble hydrocolloids such as starches, starch derivatives, sodium alginates, polyvinyl alcohols, carboxymethyl cellulose, poly (meth) acrylates, the optical brighteners in the form of whiteners z.
- the drop height of the application suspension for forming the thermal reaction layer when the curtain coating process is carried out is set to about 5 to 35 cm, in particular to about 8 to 20 cm.
- the aqueous application suspension for forming the thermal reaction layer preferably has a surface tension between approximately 25 to 60 mN / m, in particular to approximately 30 to 40 mN / m (statistical ring method according to Du Noüy).
- the Bekk smoothness measured according to DIN 53101, is set to about 100 to 1200 seconds, in particular to about 300 to 700 seconds.
- this can still contain further pigments, in particular extender pigments. These serve to optimize the image reproduction and to improve the adsorption of the melt produced during thermal printing. Furthermore, properties such as writeability, printability, whiteness and smoothness are favored
- the particularly suitable extender pigments include inorganic pigments, such as, in particular, clays, caicinated clays, calcium carbonates, sodium aluminosilicates, aluminum oxides, titanium dioxides, silicas, diatomaceous earths, magnesium silicates, both of synthetic and natural origin. These preferably have an average particle size of approximately 0.1 to 10 ⁇ m, in particular approximately 0.1 to 2 ⁇ m. Exceeding the value of 10 ⁇ m can lead to an undesirable increase in roughness, while falling below the value of 0.1 ⁇ m affects the color intensity in the image reproduction.
- inorganic pigments such as, in particular, clays, caicinated clays, calcium carbonates, sodium aluminosilicates, aluminum oxides, titanium dioxides, silicas, diatomaceous earths, magnesium silicates, both of synthetic and natural origin. These preferably have an average particle size of approximately 0.1 to 10 ⁇ m, in particular approximately 0.1 to 2 ⁇ m. Exceeding the value of 10 ⁇ m can lead
- thermal reaction layer In principle, with the formation of the thermal reaction layer mentioned, a functional thermal paper is available. However, practical purposes regularly require that additional layers be formed on-line or off-line as a protective layer and / or as a layer which favors printability.
- the method according to the invention is particularly advantageous because, when using the curtain coating method, the production method with a comparatively high speed of 500 m / min leads to advantageous economic and technical results.
- the economic efficiency is further improved by the fact that, surprisingly, it can also run at a speed of more than 750 m / min and in particular at a speed of at least about 1000 m / min.
- the inventors were particularly surprised to find that even a speed of more than 1500 m / min leads to an unimpaired advantageous product of the process, without any disadvantages being ascertained during the operation.
- the clear exit gap width of the curtain coating head in the curtain coating process is approximately 0.1 to 1 mm, in particular approximately 0.2 to 0.6 mm, and / or the nozzle throughputs for the respective application Suspension to about 0.3 to 15.1 cm 3 / (cm working width xs), in particular to about 0.5 to 5.0 cm / (cm xs), are set, the curtain coating head being operated with a single or multiple gap can.
- the advantages associated with the present invention can essentially be summarized as follows:
- the method is of great economic benefit. This is particularly possible due to the possibility of extremely high process control up to more than 1500 m / min without any relevant impairment of the properties of the process product to be aimed for.
- the entire network system can be designed using the high-speed process. This can be done on-line as well as off-line, which means a certain flexibility in the procedure. It is particularly surprising that the properties of the process product are highly satisfactory. This applies in particular to the image reproduction and the printability of the paper as well as to the economy of the paper manufacturing process.
- the application of an application suspension to form the pigment intermediate layer of thermal paper was carried out using the curtain coating process.
- the clear exit gap width of the curtain spreading head was 0.3 mm (simple spreading head).
- the curtain coating head was operated with a nozzle throughput for the order suspension of about 0.35 cm 3 / cm working width xs).
- the viscosity of the aqueous application suspension was set to 500 mPas (according to Brookfield, 100 rpm, 25 ° C.) (in the non-deaerated state).
- the surface tension of the application suspension was 37 mN / m (statistical ring method).
- the coating mechanism was arranged in-line.
- the application of the aqueous application Suspension was carried out on a paper web with a basis weight of 43 g / m 2 .
- the drop height of the order suspension was set to 13 cm.
- the curtain coating process was operated at a speed of 1200 m / min.
- the aqueous application suspension or the thread length in the Ford cup (nozzle 4) was set to a range of 92 cm.
- thermo paper was produced on the basis of the information given above, the following formulations of aqueous application suspensions being used to form a composite structure with an intermediate pigment layer on a carrier substrate, the further layers, in particular the thermal reaction layer, then being formed in a customary manner. Since this does not affect the essence of the invention, this will not be discussed further.
- the application weight shown above gives a dry content of approx. 44.8% by weight. Further information: pH 7.4 to 7.8; Viscosity (according to Brookfield 100 rpm, spindle 3, 20 ° C) 400 mPas, surface tension (at 20 ° C) 36 mN / m, thread length (in a Ford cup with nozzle 4) 100 cm. The order was placed on the paper carrier with 6.9 g / m 2 (otro).
- composition corresponded to recipe 1, with the exception that the calcined clay Ansilex 93 was used instead of Hubertex.
- the application mass according to recipe 2 gave the following key figures: dry content of approx. 43.1% by weight, pH 6.9 -7.4; Viscosity (according to Brookfield 100 rpm, spindle 3, 20 ° C) 450 mPas, surface tension (at 20 ° C) 36 mN / m, thread length (in a Ford cup with nozzle 4) 100 cm.
- recipe 3 corresponded to recipe 2 with the exception that 20 percent of the Ansilex 93 pigment was replaced by an organic hollow sphere pigment Ropaque.
- the application mass according to recipe 3 resulted in the following key figures:
- Viscosity (according to Brookfield 100 rpm, spindle 3, 20 ° C) 300 mPas,
- Thread length (in the Ford cup with nozzle 4) 100 cm.
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Paper (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004011230A DE102004011230B4 (de) | 2004-03-04 | 2004-03-04 | Verfahren zur Herstellung eines Thermopapiers |
PCT/EP2005/002330 WO2005084958A1 (de) | 2004-03-04 | 2005-03-04 | Verfahren zur herstellung eines thermopapiers |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1720713A1 true EP1720713A1 (de) | 2006-11-15 |
EP1720713B1 EP1720713B1 (de) | 2009-12-16 |
Family
ID=34895034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05707715A Active EP1720713B1 (de) | 2004-03-04 | 2005-03-04 | Verfahren zur herstellung eines thermopapiers |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080038475A1 (de) |
EP (1) | EP1720713B1 (de) |
AT (1) | ATE452032T1 (de) |
DE (2) | DE102004011230B4 (de) |
WO (1) | WO2005084958A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102004029261B4 (de) † | 2004-06-17 | 2006-05-18 | Papierfabrik August Koehler Ag | Verfahren zur Herstellung eines wärmeempfindlichen Aufzeichnungsmaterials sowie ein durch das Verfahren hergestelltes Aufzeichnungsmaterial |
US8557732B2 (en) * | 2007-02-27 | 2013-10-15 | Ricoh Company, Ltd. | Coating material and method for producing the same |
EP2172517B1 (de) | 2008-10-06 | 2018-11-21 | Rohm and Haas Company | Verbundstoffpartikel |
RU2477347C1 (ru) * | 2011-07-26 | 2013-03-10 | Леонид Асхатович Мазитов | Способ изготовления термотрансферной бумаги |
JP6539069B2 (ja) * | 2015-03-09 | 2019-07-03 | 東レエンジニアリング株式会社 | 塗布装置 |
KR102330746B1 (ko) * | 2016-04-08 | 2021-11-23 | 이메리즈 미네랄즈 리미티드 | 유백제로서 카올린의 용도 |
CN110903716A (zh) * | 2019-11-29 | 2020-03-24 | 广东简彩纸业科技有限公司 | 三防热敏纸及其制造工艺 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3508947A (en) * | 1968-06-03 | 1970-04-28 | Eastman Kodak Co | Method for simultaneously applying a plurality of coated layers by forming a stable multilayer free-falling vertical curtain |
JPS532108A (en) * | 1976-06-28 | 1978-01-10 | Fuji Photo Film Co Ltd | Method of producing pressure sensitixed copy sheets |
JP2841923B2 (ja) * | 1991-06-07 | 1998-12-24 | 日本製紙株式会社 | 印刷用塗工紙の製造方法 |
WO1998006589A1 (fr) * | 1996-08-08 | 1998-02-19 | Mitsubishi Paper Mills Limited | Corps de thermogravure et son procede de production |
US5885660A (en) * | 1998-01-22 | 1999-03-23 | Eastman Kodak Company | Coating surfaces with a free falling coating composition, using a basin with a wall dividing the basin into two channels |
DE19903559B4 (de) * | 1998-01-30 | 2004-02-26 | Mitsubishi Paper Mills Limited | Verfahren und Apparatur zur Vorhangbeschichtung |
US6139613A (en) * | 1998-08-21 | 2000-10-31 | Aveka, Inc. | Multilayer pigments and their manufacture |
US6099913A (en) * | 1998-10-20 | 2000-08-08 | Eastman Kodak Company | Method for curtain coating at high speeds |
US6497926B1 (en) * | 1999-07-07 | 2002-12-24 | Mitsubishi Paper Mills Ltd. | Method of producing information recording material |
DE10196052T1 (de) * | 2000-04-11 | 2003-02-27 | Mitsubishi Paper Mills Ltd | Verfahren zur Herstellung eines Informationsaufzeichnungsmaterial und Beschichtungslösungen zur Verwendung in diesem Material |
EP1195260A3 (de) * | 2000-10-03 | 2002-08-14 | Fuji Photo Film Co., Ltd. | Wärmeempfindliches Aufzeichnungsmaterial |
DE20023956U1 (de) * | 2000-11-22 | 2007-12-06 | Voith Patent Gmbh | Vorhang-Auftragsvorrichtung |
US6800588B2 (en) * | 2000-12-04 | 2004-10-05 | Fuji Photo Film Co., Ltd. | Thermal recording material |
WO2003053711A1 (fr) * | 2001-12-20 | 2003-07-03 | Fuji Photo Film Co., Ltd. | Materiau de thermographie |
-
2004
- 2004-03-04 DE DE102004011230A patent/DE102004011230B4/de not_active Expired - Lifetime
-
2005
- 2005-03-04 US US10/591,659 patent/US20080038475A1/en not_active Abandoned
- 2005-03-04 AT AT05707715T patent/ATE452032T1/de not_active IP Right Cessation
- 2005-03-04 DE DE502005008705T patent/DE502005008705D1/de active Active
- 2005-03-04 EP EP05707715A patent/EP1720713B1/de active Active
- 2005-03-04 WO PCT/EP2005/002330 patent/WO2005084958A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2005084958A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102004011230B4 (de) | 2005-12-29 |
EP1720713B1 (de) | 2009-12-16 |
DE502005008705D1 (de) | 2010-01-28 |
WO2005084958A1 (de) | 2005-09-15 |
US20080038475A1 (en) | 2008-02-14 |
DE102004011230A1 (de) | 2005-09-29 |
ATE452032T1 (de) | 2010-01-15 |
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