CN115627098B - Reverse UV (ultraviolet) ink for cigarette packaging paper and printing process thereof - Google Patents
Reverse UV (ultraviolet) ink for cigarette packaging paper and printing process thereof Download PDFInfo
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- CN115627098B CN115627098B CN202211283689.4A CN202211283689A CN115627098B CN 115627098 B CN115627098 B CN 115627098B CN 202211283689 A CN202211283689 A CN 202211283689A CN 115627098 B CN115627098 B CN 115627098B
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- ink
- oil
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- printing
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- 238000007639 printing Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 title claims abstract description 15
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 12
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 10
- 239000003921 oil Substances 0.000 claims abstract description 127
- 239000002245 particle Substances 0.000 claims abstract description 35
- 239000000853 adhesive Substances 0.000 claims abstract description 20
- 230000001070 adhesive effect Effects 0.000 claims abstract description 20
- 238000005507 spraying Methods 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 42
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 27
- 239000002199 base oil Substances 0.000 claims description 25
- 239000000377 silicon dioxide Substances 0.000 claims description 20
- 229920001577 copolymer Polymers 0.000 claims description 15
- 239000001569 carbon dioxide Substances 0.000 claims description 12
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 235000012239 silicon dioxide Nutrition 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- 230000003301 hydrolyzing effect Effects 0.000 claims description 2
- 239000012798 spherical particle Substances 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 235000013312 flour Nutrition 0.000 claims 1
- 239000000758 substrate Substances 0.000 abstract description 7
- 230000037303 wrinkles Effects 0.000 abstract description 6
- 239000000976 ink Substances 0.000 abstract 5
- 238000007650 screen-printing Methods 0.000 abstract 1
- -1 polyethylene Polymers 0.000 description 15
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 239000003999 initiator Substances 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- UHFFVFAKEGKNAQ-UHFFFAOYSA-N 2-benzyl-2-(dimethylamino)-1-(4-morpholin-4-ylphenyl)butan-1-one Chemical compound C=1C=C(N2CCOCC2)C=CC=1C(=O)C(CC)(N(C)C)CC1=CC=CC=C1 UHFFVFAKEGKNAQ-UHFFFAOYSA-N 0.000 description 6
- GTELLNMUWNJXMQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(CO)(CO)CO GTELLNMUWNJXMQ-UHFFFAOYSA-N 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 6
- 150000008366 benzophenones Chemical class 0.000 description 6
- VFHVQBAGLAREND-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 VFHVQBAGLAREND-UHFFFAOYSA-N 0.000 description 6
- 150000002148 esters Chemical class 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000001993 wax Substances 0.000 description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 4
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 4
- 239000001095 magnesium carbonate Substances 0.000 description 4
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 description 3
- LJUKODJASZSKFL-UHFFFAOYSA-N 2-(9-oxothioxanthen-2-yl)oxyacetic acid Chemical compound C1=CC=C2C(=O)C3=CC(OCC(=O)O)=CC=C3SC2=C1 LJUKODJASZSKFL-UHFFFAOYSA-N 0.000 description 3
- ZYMCJDAUBJFVSM-UHFFFAOYSA-N 6-methylheptyl 4-(dimethylamino)benzoate Chemical compound CC(C)CCCCCOC(=O)C1=CC=C(N(C)C)C=C1 ZYMCJDAUBJFVSM-UHFFFAOYSA-N 0.000 description 3
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 3
- 229920006243 acrylic copolymer Polymers 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 3
- 239000012965 benzophenone Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000004205 dimethyl polysiloxane Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- YDKNBNOOCSNPNS-UHFFFAOYSA-N methyl 1,3-benzoxazole-2-carboxylate Chemical compound C1=CC=C2OC(C(=O)OC)=NC2=C1 YDKNBNOOCSNPNS-UHFFFAOYSA-N 0.000 description 3
- 239000004200 microcrystalline wax Substances 0.000 description 3
- 235000019808 microcrystalline wax Nutrition 0.000 description 3
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 3
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- GJKGAPPUXSSCFI-UHFFFAOYSA-N 2-Hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone Chemical compound CC(C)(O)C(=O)C1=CC=C(OCCO)C=C1 GJKGAPPUXSSCFI-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 235000011089 carbon dioxide Nutrition 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000001815 facial effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 238000001132 ultrasonic dispersion Methods 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- CSCPPACGZOOCGX-UHFFFAOYSA-N acetone Substances CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/54—Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
-
- 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
- B41M5/0023—Digital printing methods characterised by the inks used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/08—Printing inks based on natural resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- General Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Electromagnetism (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Laminated Bodies (AREA)
Abstract
The application relates to the technical field of reverse printing, in particular to reverse UV (ultraviolet) ink for cigarette packaging paper and a printing process thereof. Such reverse UV inks include base and top oils, and also include ink receptive oils that include porous particles and an adhesive prior to printing the base on the print, full-screen printing, or spraying on the print. The application innovatively increases the ink-absorbing oil, ensures the thickness of the bottom oil layer through the concave-convex ink-absorbing layer, reduces the height difference between the top surface of the bottom oil layer and the top surface of the ink-absorbing layer, provides a relatively smooth printing substrate for the surface oil, and reduces the possibility of surface oil wrinkling. Meanwhile, the part of the ink absorbing layer, which is close to the edge of the bottom oil layer and is easy to cause the problem of wrinkles, is microscopically of a concave-convex structure, and compared with the original plane structure, the ink absorbing layer is used as a printing substrate of the surface oil, and the telescopic space of the surface oil layer is provided for further reducing the wrinkles of the surface oil layer.
Description
Technical Field
The invention relates to the technical field of reverse printing, in particular to reverse UV (ultraviolet) ink for cigarette packaging paper and a printing process thereof.
Background
The reverse sanding process is a novel printing process which appears in the last two years and can be completed through a plurality of special primer or light treatments; it is also known as a reverse glazing process and is considered a new process for localized glazing.
The printing ink used in the reverse sanding process generally consists of reverse base oil and reverse surface oil, for example, the patent document with publication number CN107459865A discloses UV reverse gloss oil printing ink for printing and a preparation method thereof, and the printing ink consists of the reverse base oil and the reverse surface oil, and the technical scheme is characterized by comprising the following components in parts by weight: the reverse primer comprises the following components in parts by weight: 45-80 parts of ultraviolet light curing resin A, 10-25 parts of reactive diluent A, 5-9 parts of initiator A, 2-6 parts of filler A and 3-5 parts of auxiliary agent A; the reverse facial oil comprises the following components in parts by weight: 30-42 parts of ultraviolet light curing resin B, 30-55 parts of reactive diluent B, 8-15 parts of photosensitive sensitizer B, 5-10 parts of photoinitiator B and 0-1 part of auxiliary agent B.
When the printing ink is used, after the printed matter is printed according to the normal color sequence, on the basis of thoroughly drying or solidifying the printing ink, a layer of reverse primer is printed on a local area which does not need to be highlighted in a high-brightness mode in an offset printing line (or off-line) mode, and after the reverse primer is completely dried, the reverse primer is coated on the surface of the whole printed matter in a full-plate mode. In this way, cohesive reaction occurs in the contact area of the reverse surface oil and the reverse base oil to form a small granular ink film, so as to form a matte or frosted rough surface; and a high gloss surface is formed in the reverse side oil area where the reverse base oil is not printed. Eventually, the surface of the print forms localized high gloss and localized frosted low gloss areas. The completely different gloss effects of the two effects realize the high contrast effect of the local image, and the pattern and text with gloss mirror surfaces are interspersed and highlighted.
It can be seen that when the reverse ink is used, only a partial area is printed with the base oil, while the full plate is printed with the top oil. The bottom oil layer must have a certain thickness, so that the problem of height difference exists on the surface of a printed matter after the bottom oil layer is printed; printing of the top oil on this surface tends to cause wrinkling of the top oil layer, particularly at the edges of the bottom oil layer, affecting the quality of the final print.
In view of this wrinkling problem, the conventional measures adopted by those skilled in the art are to reduce the thickness of the base oil or increase the fluidity of the top oil, but reducing the thickness of the base oil results in poor sanding effect, and increasing the fluidity of the top oil results in poor adhesion of the top oil on the printed matter, so that the top oil layer is easy to fall off, and it is difficult to solve the above problems well.
Disclosure of Invention
The invention aims to solve the problems and provides reverse UV ink for cigarette packaging paper and a printing process thereof.
The invention provides a reverse UV ink for cigarette packaging paper, which comprises base oil and surface oil, and also comprises ink-absorbing oil which is printed on a printed matter before the base oil is printed on the printed matter, is printed on the printed matter in a full-plate mode or is sprayed on the printed matter, wherein the ink-absorbing oil comprises porous particles and an adhesive.
The application breaks through the conventional recognition that the reverse ink only comprises base oil and surface oil, innovatively increases the ink-absorbing oil, and the ink-absorbing oil contains granular substances, so that after the ink-absorbing oil is printed on a printed matter, the printed matter is solidified to form a microscopically rugged ink-absorbing layer, the ink-absorbing layer comprises a plurality of bulges, grooves are arranged between two adjacent bulges, and the horizontal plane where the tops of the bulges are positioned is recorded as the top surface of the ink-absorbing layer.
When the bottom oil is locally printed on the ink absorbing layer, the bottom oil flows into the grooves, and after the bottom oil is leveled and solidified, the distance from the top surface of the bottom oil layer to the bottom of the grooves is the thickness of the bottom oil layer, and the distance from the top surface of the bottom oil layer to the top point of the bulge is the thickness of the bottom oil layer protruding out of the ink absorbing layer. It can be seen that by the provision of the relief ink absorbing layer, the base oil layer can still have a considerable thickness to ensure the subsequent frosting effect, but the height difference between the top surface of the base oil layer and the top surface of the ink absorbing layer is reduced. At this time, the full-plate printing surface oil is used, one part of the surface oil is positioned on the top surface of the bottom oil layer, the other part of the surface oil is positioned on the top surface of the ink absorbing layer, and the small height difference between the bottom oil layer and the ink absorbing layer provides a relatively flush printing substrate for the surface oil compared with the prior art, so that the possibility of surface oil wrinkling at the edge of the bottom oil layer is reduced. Meanwhile, the part of the ink absorbing layer, which is close to the edge of the bottom oil layer and is easy to cause the problem of wrinkles, is of a concave-convex structure, and compared with the original plane structure, the ink absorbing layer is used as a printing substrate of the surface oil layer, and the telescopic space of the surface oil layer is provided for further reducing the wrinkles of the surface oil layer.
Wherein, in order to avoid concave-convex structure to influence the adhesion of bottom surface and face oil, improve the wettability of bottom oil and face oil on the ink absorption layer, the particulate matter chooses porous granule, and it plays absorption and fixed effect to bottom oil and face oil to guarantee the vertical infiltration efficiency and the effect of bottom oil and face oil.
Preferably, the porous particles comprise one or more of silica, silicate, titanium dioxide, calcium carbonate, alumina, aluminum hydrate, colloidal aluminum, porcelain clay, magnesium carbonate, calcium carbonate, barium sulfate, and zinc oxide. In order to reduce the color impact of ink-receptive oils on other printing oils, transparent silica is preferred.
The shape of the porous particles is not limited, and spherical particles are preferable, and the use of flakes is avoided, because the flake particles cause the permeation rate and permeation amount of the base oil and the surface oil to be different in different directions, thereby causing uneven permeation of the base oil and the surface oil.
The particle size of the porous particles is not limited, but the height difference between the bottom oil layer and the ink absorbing layer has a great influence on the problem of wrinkling of the surface oil, and the thickness difference can be further reduced by controlling the particle size of the porous particles, or even the thickness difference is controlled to be negative, so that the macroscopic level of the surface oil layer printing substrate is ensured. Preferably, the base oil and the surface oil each include a filler having a particle diameter not exceeding the particle diameter of the porous material in the ink-receptive oil.
The porous particles are preferably uniformly distributed in the adhesive, and are generally obtained by mixing the porous particles with the adhesive and then stirring the mixture by ultrasonic waves. In the case of selecting silica as the porous particles, in view of the problem of easy agglomeration of silica, as a preferred aspect of the present invention, the ink-receptive oil is prepared by the steps of: adding the adhesive into water for swelling to obtain a mixed system; and mixing a silicon source with liquid carbon dioxide, adding the mixture into the mixed system, and hydrolyzing to obtain the silicon dioxide. As the preference of the invention, the temperature is 0-30 ℃ and the pressure is controlled to be 3.49-7.21MPa during hydrolysis; after hydrolysis, the solution is released to normal pressure to remove carbon dioxide.
The principle is as follows: after the silicon source and the liquid carbon dioxide are mixed, the silicon source particles are dispersed and coated by the liquid carbon dioxide, and then a mixed system with water is added, so that the solubility of the liquid carbon dioxide in the water is small, the speed of water entering the liquid carbon dioxide is reduced, the contact speed of the water and the silicon source particles is reduced, the reaction rate is reduced, the silicon dioxide generation rate is reduced, and the slowly generated silicon dioxide particles are coated by the liquid carbon dioxide, so that the silicon dioxide cannot agglomerate.
The adhesive is another main component of the ink-absorbing oil, and has the main functions of improving the film forming property of the porous particles, and serving as a carrier of the porous particles to uniformly disperse the porous particles and improve the strength of the ink-absorbing layer.
As a preferred aspect of the present invention, the mass ratio of the porous particles to the adhesive is 1: (30-50). The concave-convex effect of the ink-absorbing layer is influenced by the excessive use amount of the adhesive, and the adhesive force of the ink-absorbing layer is influenced by the insufficient use amount of the adhesive.
As the preferential selection of the invention, the adhesive is porous resin, and porous particles and the porous adhesive form rich pores together to continuously fix and absorb ink.
In order to ensure the affinity of the adhesive and the porous particles and the affinity of the ink absorbing layer and the printed matter, the base oil and the surface oil, the adhesive is preferably water absorbing and oil absorbing porous resin. As a preferred aspect of the present invention, the water-absorbing and oil-absorbing adhesive includes one or more of a soluble starch-butyl methacrylate copolymer, a soluble starch-methyl methacrylate copolymer, a soluble starch-acrylamide-butyl methacrylate copolymer, and a soluble starch-acrylamide-methyl methacrylate copolymer.
In addition, the base oil and the surface oil are prepared by adopting a common formula in the prior art.
Preferably, the primer comprises a resin, a reactive monomer, a filler, an auxiliary agent and an initiator.
As a preferred aspect of the present invention, the resin comprises an ester of an acrylic modified rosin with 2-ethyl-2-hydroxymethyl-1, 3-propanediol; the active monomer comprises one or more of ethoxylated trimethylolpropane triacrylate, neopentyl glycol diacrylate and trimethylolpropane triacrylate; the filler comprises one or more of bentonite, calcium carbonate, magnesium carbonate and polyethylene wax; the initiator comprises one or more of (2, 4, 6-trimethylbenzoyl) -diphenyl phosphine oxide (TPO), polytetramethylene glycol 250 bis (2-carboxymethoxy thioxanthone) ester, isooctyl p-dimethylaminobenzoate, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, benzophenone derivative polymer and benzophenone polymer mixture; the auxiliary agent comprises silicon dioxide.
As a preferred aspect of the present invention, the primer comprises, in terms of parts by mass, 20-30 parts of an ester of acrylic acid-modified rosin with 2-ethyl-2-hydroxymethyl-1, 3-propanediol, 5-10 parts of ethoxylated trimethylolpropane triacrylate, 5-10 parts of neopentyl glycol diacrylate, 20-30 parts of trimethylolpropane triacrylate, 10-20 parts of bentonite, 1-5 parts of silica, 1-5 parts of calcium carbonate, 1-5 parts of magnesium carbonate, 1-5 parts of polyethylene wax, 1-5 parts of (2, 4, 6-trimethylbenzoyl) -diphenylphosphine oxide (TPO), 1-5 parts of polytetramethylene glycol 250 bis (2-carboxymethoxythioxanthone) ester, 1-5 parts of isooctyl p-dimethylaminobenzoate, 1-5 parts of a polymer of 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, 1-5 parts of a benzophenone derivative, and 1-5 parts of a benzophenone polymer.
Preferably, the surface oil comprises a film forming material, an initiator, a filler and a leveling agent.
As the preferable mode of the invention, the film forming material comprises one or more of 1, 6-hexanediol diacrylate, tripropylene glycol diacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, acrylic copolymer and epoxy resin; the initiator comprises one or more of (2, 4, 6-trimethylbenzoyl) diphenyl phosphine oxide (TPO), 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, 1- [4- (2-hydroxy ethoxy) phenyl ] -2-hydroxy-2-methyl-1-acetone and a polymer of a benzophenone derivative; the filler comprises one or more of microcrystalline wax, polyethylene and polyethylene wax; the leveling agent comprises polydimethylsiloxane.
As a preferred aspect of the present invention, the surface oil comprises, in terms of parts by mass, 1-5 parts of 1, 6-hexanediol diacrylate, 20-25 parts of tripropylene glycol diacrylate, 30-35 parts of trimethylolpropane triacrylate, 5-10 parts of ethoxylated trimethylolpropane triacrylate, 8-12 parts of an acrylic copolymer, 20-25 parts of an epoxy resin, 0.3-0.5 part of (2, 4, 6-trimethylbenzoyl) diphenyl phosphine oxide (TPO), 0.3-0.5 part of 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, 0.3-0.5 part of 1- [4- (2-hydroxyethoxy) phenyl ] -2-hydroxy-2-methyl-1-propanone, 3-3.5 parts of a polymer of a benzophenone derivative, 0.5-1 part of a microcrystalline wax, 8-12 parts of polyethylene or/and polyethylene wax, and 0.5-1.5 parts of polydimethylsiloxane.
The invention also aims to provide a printing process of the reverse UV ink for the cigarette packaging paper, which comprises the following steps of:
s1, performing full-plate printing or spraying ink-absorbing oil on a printed matter;
s2, after solidification, locally printing base oil on the printed matter;
s3, after solidification, printing surface oil on the printed matter in a full-plate mode.
The invention has the beneficial effects that:
1. The application innovatively increases the ink-absorbing oil, ensures the thickness of the bottom oil layer through the concave-convex ink-absorbing layer, reduces the height difference between the top surface of the bottom oil layer and the top surface of the ink-absorbing layer, provides a relatively smooth printing substrate for the surface oil, and reduces the possibility of surface oil wrinkling. Meanwhile, the part of the ink absorbing layer, which is close to the edge of the bottom oil layer and is easy to cause the problem of wrinkles, is microscopically of a concave-convex structure, and compared with the original plane structure, the ink absorbing layer is used as a printing substrate of the surface oil, and the telescopic space of the surface oil layer is provided for further reducing the wrinkles of the surface oil layer.
2. The application provides a reverse ink formula, after the surface oil is coated on the solidified base oil, cohesive rejection reaction can be generated in the contact area of the surface oil and the base oil, and the surface oil with high fluidity can uniformly shrink and accumulate on site under the action of repulsive force, so that light is scattered, a small granular ink film is formed, and the printing effect of matte or frosted rough surface is realized.
Detailed Description
The following is a specific embodiment of the present invention and further describes the technical solution of the present invention, but the present invention is not limited to these examples.
Example 1
A reverse UV ink for cigarette packaging paper comprises ink absorbing oil, base oil and surface oil.
The ink-absorbing oil comprises 1 part of silicon dioxide and 40 parts of soluble starch-acrylamide-methyl methacrylate copolymer, and is prepared by the following steps: 10 parts by mass of starch was added to water and gelatinized with stirring at 65℃to obtain gelatinized starch. The gelatinized starch after cooling is mixed with 0.5 part of initiator ammonium persulfate, 5 parts of acrylic acid, 10 parts of acrylamide and 0.05 part of cross-linking agent N, N' -methylene bisacrylamide, stirred for 4 hours at 50 ℃, 40 parts of methyl methacrylate is added, grafting reaction is carried out at 70 ℃, and the reaction time is 4 hours. After the reaction, adding sodium hydroxide to neutralize to pH 6-8, vacuum-filtering and vacuum-drying to obtain soluble starch-acrylamide-methyl methacrylate copolymer. Adding soluble starch-acrylamide-methyl methacrylate copolymer into water to swell, adding silicon dioxide particles with the particle size of 5 mu m, and performing ultrasonic dispersion for 10min to obtain the ink-absorbing oil.
The primer comprises 25 parts of an ester of acrylic modified rosin with 2-ethyl-2-hydroxymethyl-1, 3-propanediol, 8 parts of ethoxylated trimethylolpropane triacrylate, 7 parts of neopentyl glycol diacrylate, 25 parts of trimethylolpropane triacrylate, 15 parts of bentonite, 2 parts of silica, 2 parts of calcium carbonate, 2 parts of magnesium carbonate, 2 parts of polyethylene wax, 2 parts of (2, 4, 6-trimethylbenzoyl) -diphenyl phosphine oxide (TPO), 2 parts of polytetramethylene glycol 250 bis (2-carboxymethoxythioxanthone) ester, 2 parts of isooctyl p-dimethylaminobenzoate, 2 parts of 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, 2 parts of benzophenone derivative, 2 parts of benzophenone polymer, and is prepared by the following steps: the components are mixed and stirred uniformly, and then ground until the fineness is not more than 3 mu m, thus obtaining yellowish pasty fluid.
The facial oil comprises 2 parts of 1, 6-hexanediol diacrylate, 23 parts of tripropylene glycol diacrylate, 32 parts of trimethylolpropane triacrylate, 8 parts of ethoxylated trimethylolpropane triacrylate, 10 parts of acrylic copolymer, 22 parts of epoxy resin, 0.4 part of (2, 4, 6-trimethylbenzoyl) diphenyl phosphine oxide (TPO), 0.4 part of 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, 0.4 part of 1- [4- (2-hydroxyethoxy) phenyl ] -2-hydroxy-2-methyl-1-propanone, 3.3 parts of a polymer of benzophenone derivative, 0.8 parts of microcrystalline wax, 10 parts of polyethylene wax, 1 part of polydimethylsiloxane, and is prepared by the following steps: mixing the above components, stirring, and grinding to fineness of no more than 3 μm to obtain pale yellow liquid.
The printing process of the reverse UV ink for the cigarette packaging paper comprises the following steps of:
s1, performing full-plate printing or spraying ink-absorbing oil on a printed matter, and then drying and curing at 60 ℃;
s2, after curing, locally printing base oil on the printed matter, and curing by ultraviolet irradiation;
s3, after curing, printing surface oil on the printed matter in a full-plate mode, and curing by ultraviolet irradiation.
Example 2
This embodiment is substantially the same as embodiment 1, except that: the ink-receptive oil comprises 1 part silica and 40 parts sodium polyacrylate resin.
The preparation method comprises the following steps: and (3) neutralizing acrylic acid according to parts by mass, adding a cross-linking agent N, N' -methylene bisacrylamide, an initiator potassium persulfate and a pore-forming agent isopropanol, stirring uniformly to obtain a solution, heating the solution to 65 ℃ for polymerization, and carrying out vacuum filtration and vacuum drying after the reaction is finished to obtain the sodium polyacrylate resin. Adding sodium polyacrylate resin into water to swell, adding silicon dioxide particles with the particle size of 5 mu m, and performing ultrasonic dispersion for 10min to obtain the ink-absorbing oil.
Example 3
This embodiment is substantially the same as embodiment 1, except that: the ink-receptive oil comprises 1 part of titanium dioxide and 40 parts of a soluble starch-acrylamide-methyl methacrylate copolymer.
Example 4
This embodiment is substantially the same as embodiment 1, except that:
The ink absorbing oil is prepared by the following steps: firstly, adding soluble starch-acrylamide-methyl methacrylate copolymer into water to swell to obtain a mixed system. The reactor was then filled with ethyl orthosilicate and placed in a thermostatic water bath at 20 ℃. And opening an exhaust port of the reactor, simultaneously injecting carbon dioxide into the reactor until the air in the reactor is completely exhausted, closing the exhaust port of the reactor, and continuously injecting the carbon dioxide into the reactor until the pressure reaches 6MPa. Then, the mixed system was introduced into the reaction vessel and kept under these conditions for 15 hours. Finally releasing the reactor to normal pressure, wherein one part of carbon dioxide volatilizes, and the other part of carbon dioxide forms dry ice; the reactor was then heated at normal temperature and pressure to sublimate the dry ice. And taking out the residual product in the reactor, namely the ink-absorbing oil.
Example 5
This embodiment is substantially the same as embodiment 1, except that: silica particles with a particle size of 300nm are selected.
Example 6
This embodiment is substantially the same as embodiment 1, except that: the ink-receptive oil included 1 part silica and 30 parts soluble starch-acrylamide-methyl methacrylate copolymer.
Example 7
This embodiment is substantially the same as embodiment 1, except that: the ink-receptive oil comprises 1 part silica and 50 parts soluble starch-acrylamide-methyl methacrylate copolymer.
Example 8
This embodiment is substantially the same as embodiment 1, except that: the ink-receptive oil comprises 1 part silica and 10 parts soluble starch-acrylamide-methyl methacrylate copolymer.
Example 9
This embodiment is substantially the same as embodiment 1, except that: the ink-receptive oil comprises 1 part silica and 100 parts soluble starch-acrylamide-methyl methacrylate copolymer.
Comparative example 1
This comparative example is substantially the same as example 1, except that: the ink-receptive oil included 41 parts of a soluble starch-acrylamide-methyl methacrylate copolymer.
Comparative example 2
This comparative example is substantially the same as example 1, except that: no ink absorbing oil is used.
[ Printed product quality detection ]
Fold detection: the coatings on the surfaces of the printed products of examples and comparative examples were tested for orange peel using a BYK laser orange peel tester (Garden-4806), which was run on the surface of the printed matter by a 10cm scan, and the light source was irradiated at 60 ℃. The detection results are shown in Table 1 below.
And (3) adhesive force detection: the 3M800 test adhesive tape is tightly adhered on the printed matter, the whole test area is covered, one end of the adhesive tape is grasped by hands after waiting for 5min, the adhesive tape is torn off in the direction forming an angle of 45 degrees with the printing surface, and the proportion of the area of the ink falling area to the area of the whole test area is calculated.
Table 1.
In orange peel detection, the grade number is an evaluation index, and the larger the value is, the smaller the orange peel is, and the better the surface state is. As shown in table 1, in this example, the number of stages of comparative example 2, comparative example 1, and example 1 increases in order, which indicates that the porous structure can effectively reduce the orange peel, i.e., the wrinkling phenomenon of the coating.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (3)
1. A printing process of reverse UV ink for cigarette packaging paper is characterized in that: the method comprises the following steps:
s1, performing full-plate printing or spraying ink-absorbing oil on a printed matter;
the ink-absorbing oil is porous particles and an adhesive, and the mass ratio of the porous particles to the adhesive is 1: (30-50);
The porous particles are silica particles with the particle size of 5 mu m, and the porous particles are spherical particles;
the adhesive is soluble starch-acrylamide-methyl methacrylate copolymer;
The ink-absorbing oil contains particulate matters, so that after the ink-absorbing oil is printed on a printed matter, the printed matter is solidified to form an uneven ink-absorbing layer, the ink-absorbing layer comprises a plurality of bulges, grooves are arranged between two adjacent bulges, and the horizontal plane where the tops of the bulges are positioned is recorded as the top surface of the ink-absorbing layer;
The base oil and the surface oil both comprise a filler, and the particle size of the filler is not more than that of porous particles in the ink-absorbing oil;
s2, locally printing base oil on the ink absorbing layer; the fineness of the base oil is not more than 3 mu m;
The bottom oil flows into the groove, and the bottom oil is leveled and solidified to form a bottom oil layer; the distance between the top surface of the bottom oil layer and the bottom of the groove is the thickness of the bottom oil layer, and the distance between the top surface of the bottom oil layer and the top point of the bulge is the thickness of the bottom oil layer protruding out of the ink absorbing layer;
s3, full-plate printing surface oil; the fineness of the flour oil is not more than 3 mu m;
one part of the surface oil is positioned on the top surface of the bottom oil layer, and the other part of the surface oil is positioned on the top surface of the ink absorbing layer.
2. The process for printing reverse UV ink for cigarette wrapping paper according to claim 1, wherein: the ink absorbing oil is prepared through the following steps: adding the adhesive into water for swelling to obtain a mixed system; and mixing a silicon source with liquid carbon dioxide, adding the mixture into the mixed system, and hydrolyzing to obtain the silicon dioxide.
3. The process for printing reverse UV ink for cigarette wrapping paper according to claim 2, wherein: the temperature is 0-30deg.C, and the pressure is 3.49-7.21MPa during hydrolysis; after hydrolysis, the solution is released to normal pressure to remove carbon dioxide.
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