CN117601580B - Water-based oil black green printing process for paperboard - Google Patents
Water-based oil black green printing process for paperboard Download PDFInfo
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- CN117601580B CN117601580B CN202410055726.9A CN202410055726A CN117601580B CN 117601580 B CN117601580 B CN 117601580B CN 202410055726 A CN202410055726 A CN 202410055726A CN 117601580 B CN117601580 B CN 117601580B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 238000007639 printing Methods 0.000 title claims abstract description 50
- 239000011087 paperboard Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 title claims abstract description 16
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 68
- 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 claims abstract description 68
- 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 claims abstract description 68
- 238000006243 chemical reaction Methods 0.000 claims abstract description 56
- 239000008367 deionised water Substances 0.000 claims abstract description 49
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 49
- 239000011230 binding agent Substances 0.000 claims abstract description 35
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 32
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 32
- 238000001035 drying Methods 0.000 claims abstract description 31
- 239000002270 dispersing agent Substances 0.000 claims abstract description 27
- 239000004359 castor oil Substances 0.000 claims abstract description 26
- 235000019438 castor oil Nutrition 0.000 claims abstract description 26
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims abstract description 26
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 25
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 25
- 239000002562 thickening agent Substances 0.000 claims abstract description 25
- 150000002148 esters Chemical class 0.000 claims abstract description 22
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 239000000049 pigment Substances 0.000 claims abstract description 14
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 104
- 238000002156 mixing Methods 0.000 claims description 84
- 238000010438 heat treatment Methods 0.000 claims description 80
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 66
- 239000003995 emulsifying agent Substances 0.000 claims description 61
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 48
- 239000000203 mixture Substances 0.000 claims description 33
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 31
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 30
- 238000002360 preparation method Methods 0.000 claims description 29
- 239000003054 catalyst Substances 0.000 claims description 26
- 239000000839 emulsion Substances 0.000 claims description 25
- 239000003999 initiator Substances 0.000 claims description 25
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 25
- 239000000178 monomer Substances 0.000 claims description 24
- 238000007873 sieving Methods 0.000 claims description 24
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 17
- 239000012298 atmosphere Substances 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 16
- OQBLGYCUQGDOOR-UHFFFAOYSA-L 1,3,2$l^{2}-dioxastannolane-4,5-dione Chemical compound O=C1O[Sn]OC1=O OQBLGYCUQGDOOR-UHFFFAOYSA-L 0.000 claims description 13
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- -1 polyoxypropylene ethylene oxide glycerol Polymers 0.000 claims description 11
- 239000013530 defoamer Substances 0.000 claims description 10
- 238000000227 grinding Methods 0.000 claims description 10
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 8
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 8
- RBNPOMFGQQGHHO-UHFFFAOYSA-N glyceric acid Chemical compound OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 claims description 8
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 8
- 239000003921 oil Substances 0.000 claims description 8
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical group [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 238000009210 therapy by ultrasound Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- 239000002655 kraft paper Substances 0.000 claims description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 2
- 239000002904 solvent Substances 0.000 abstract description 10
- 239000003973 paint Substances 0.000 abstract description 2
- 239000000123 paper Substances 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 58
- 230000000052 comparative effect Effects 0.000 description 21
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 9
- 238000005886 esterification reaction Methods 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- 150000003254 radicals Chemical class 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229920001732 Lignosulfonate Polymers 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001723 carbon free-radicals Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000000269 nucleophilic effect Effects 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- 238000009736 wetting Methods 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
- B41M5/0023—Digital printing methods characterised by the inks used
-
- 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
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/037—Printing inks characterised by features other than the chemical nature of the binder characterised by the pigment
-
- 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
Abstract
The invention relates to a water-based ink green printing process for paperboards, and belongs to the technical field of water-based ink for paperboards. The printing process comprises the following steps: performing sheet forming, proofing, makeup and printing down treatment according to specifications to obtain a printing plate; printing operation of spraying water-based ink on a printing substrate by adopting a printer; drying the water-based ink by adopting a dryer; and (3) arranging and packaging the dried printed substrates. The water-based ink comprises the following components: the paint comprises a binder, a pigment, a defoaming agent, a dispersing agent, a thickening agent, isopropanol, ammonia water and deionized water; the modified maleated rosin modified ester is obtained by the joint reaction of maleated rosin, castor oil and polyethylene glycol, so that the characteristics of degradability, heat resistance, hydrophobicity and the like of rosin are maintained, and the advantages of high gloss, high hardness, solvent resistance, high attaching strength and the like of the water-based ink are increased. The water-based ink disclosed by the invention has good stability, so that the efficiency is higher, the productivity is improved, and the paper cost is saved when the paper board is coated.
Description
Technical Field
The invention belongs to the technical field of water-based ink, and relates to a water-based ink green printing process for paperboards.
Background
Solvent-based printing inks are widely used in the offset and offset packaging industries due to their excellent offset printing chemistry and good chemical resistance. However, such inks typically use a chemical reagent containing an aromatic compound as the printing solvent. Since solvent-based inks require a large amount of organic solvents, they release a large amount of organic Volatiles (VOCs) into the air, causing serious environmental pollution.
In contrast, aqueous ink, which is an environmentally friendly ink, may be referred to as "green" ink. The biggest difference between the ink and the traditional solvent type ink is that water is used as a solvent, so that the use of an organic solvent is greatly reduced. This not only reduces the production and emissions of VOCs, but also does not pose a hazard to human health. Compared with the traditional solvent type ink, the water-based ink has the advantages of safety, environmental protection, high efficiency, no toxicity, good quality and the like.
The acrylic resin is used as a binder of the water-based ink, and has the characteristics of light color, good weather resistance, strong adhesive force, high transparency and the like, but has poor water resistance, slow drying speed and low glossiness.
Rosin is one of the main forest products in China. Although it is not directly soluble in water, it is soluble in organic dilute alkali or strong acid solvents. Therefore, the modified rosin can be directly or repeatedly modified to be applied to various fields such as ink, paint, papermaking, adhesives, foods, pesticides and the like. In the field of ink, rosin is widely used as an adhesive, and can play roles in wetting pigment, quick drying, adhesion, emulsification and the like.
Disclosure of Invention
The invention aims to provide a water-based oil-green printing process for paperboards, which is characterized in that modified maleated rosin modified ester is obtained through the joint reaction of maleated rosin, castor oil and polyethylene glycol, so that the characteristics of degradability, heat resistance, hydrophobicity and the like of rosin are maintained, and the advantages of high gloss, high hardness, solvent resistance, high attaching strength and the like of water-based ink are increased.
An aqueous oil green printing process for paperboard, the printing process comprising the steps of:
s1, performing sheet forming, proofing, imposition and printing down treatment according to specifications to obtain a printing plate;
s2, filling water-based ink into an ink duct of a printer;
s3, placing the printing substrate in a feeding area and conveying the printing substrate to a printer;
s4, printing operation of spraying water-based ink on the printing substrate by adopting a printer;
s5, drying the water-based ink on the surface of the printing substrate after the printing operation by adopting a dryer;
S6, arranging and packaging the dried printed substrates.
As a preferred embodiment of the present invention, the print substrate is a cardboard, and the cardboard is one or more of a linerboard, a kraft linerboard, a yellow cardboard, a white cardboard, and an impregnated liner board.
As a preferred embodiment of the present invention, step S7 is included after step S6, and step S7 includes the steps of:
S11, after the formal printing is finished, thoroughly cleaning the ink roller and the ink tank, and simultaneously removing the residual water-based ink on the surface of the printing substrate;
s12, cleaning the rubber roller by adopting the color conversion paste;
s13, adopting high-pressure steam to circularly clean the waterway system.
As a preferable technical scheme of the invention, the water-based ink comprises the following components in parts by weight:
40.00-60.00 parts of binder, 10.00-15.00 parts of pigment, 1.2-1.7 parts of defoamer, 0.4-1.0 part of dispersant, 0.5-1.0 part of thickener, 10.00-15.00 parts of isopropanol, 0.2-3.0 parts of ammonia water and 20-40 parts of deionized water.
As a preferred embodiment of the present invention, the pigment is one or more selected from the group consisting of iron oxide red, iron oxide yellow and iron oxide black; the defoaming agent is polyoxypropylene ethylene oxide glycerol ether; the thickener is Pick BYK-420.
As a preferable technical scheme of the invention, the dispersing agent is pretreated calcium lignosulfonate.
As a preferable technical scheme of the invention, the preparation method of the binder comprises the following steps:
1) Stirring and mixing the maleated rosin, castor oil, polyethylene glycol and a catalyst, and then carrying out heating reaction in an inert atmosphere to obtain maleated rosin modified ester;
2) Heating the modified maleated rosin ester, adding the rosin emulsifier, stirring and mixing, adding deionized water, heating and stirring, cooling, and sieving to obtain mixed emulsion;
3) And adding the monomer mixture, the mixed emulsifier and the deionized water into the mixed emulsion, stirring and mixing, regulating the pH value, heating, stirring and mixing, and adding an initiator to perform heating reaction to obtain the binder.
As a preferable technical scheme of the invention, in the step 1), the catalyst comprises stannous oxalate and p-toluenesulfonic acid according to the mass ratio of 5.0-5.5:1, mixing; the inert atmosphere is nitrogen atmosphere; the heating reaction condition is that the reaction is carried out for 2.5 to 3.0 hours at the temperature of 230 to 240 ℃; the mass ratio of the maleated rosin to the castor oil to the polyethylene glycol to the catalyst is 40:20.0-22.5:60:0.6-0.8; the molecular weight of the polyethylene glycol is 200.
As a preferable technical scheme of the invention, in the step 2), the heating temperature is raised to 60 ℃; the stirring and mixing conditions are that the mixture is emulsified for 45-60min at the temperature of 120 ℃ at the rotating speed of 300-400 r/min; the heating and stirring conditions are that stirring is carried out for 5-10min at the temperature of 95 ℃ and the rotating speed of 700-800 r/min; the cooling temperature is cooled to 40 ℃; the sieving condition is that sieving with 500 mesh sieve; the rosin emulsifier is ONIST APS-350 emulsifier.
As a preferred technical scheme of the invention, in the step 3), the mass ratio of the mixed emulsion, the monomer mixture, the mixed emulsifier, the deionized water and the initiator is 10.5-11.5:44.0-45.5:8:80:1.3; the monomer mixture is prepared from butyl acrylate, methyl methacrylate and acrylic acid according to a mass ratio of 1:1: 0.22-0.27; the mixed emulsifier is one or two of OP-10 emulsifier and SDS emulsifier; the condition for adjusting the pH value is that 15 mass percent ammonia water is adopted to adjust the pH value to 7-8; the temperature of the heating, stirring and mixing is 60-70 ℃; the initiator is potassium persulfate, and the heating reaction condition is that the reaction is carried out for 3.5-4.0h at the temperature of 85-90 ℃.
As a preferable technical scheme of the invention, the preparation method of the pretreated calcium lignosulfonate comprises the following steps:
mixing calcium lignosulfonate particles with sulfuric acid solution, performing ultrasonic treatment, filtering, taking filtrate, adding ethanol solution, stirring and mixing, standing, filtering, taking solid, and drying to obtain a pretreatment dispersing agent; wherein, the mass ratio of the calcium lignosulfonate particles to the sulfuric acid solution to the ethanol solution is 1:5:5, a step of; the mass concentration of the sulfuric acid solution is 10%; the ethanol solution is prepared from ethanol and deionized water according to a volume ratio of 8:1, mixing; the drying condition is that the drying is carried out for 24 hours at the temperature of 50 ℃.
The preparation method of the water-based ink comprises the following steps:
and (3) stirring and mixing the binder and the defoamer, grinding, and then adding pigment, dispersant, thickener, isopropanol, ammonia water and deionized water for uniform stirring to obtain the water-based ink.
As a preferable technical scheme of the invention, in the preparation process of the water-based ink, the stirring and mixing conditions are that stirring is carried out for 10-15min at the rotating speed of 2000-2500 r/min; the grinding time is 30-40min; the stirring condition is that stirring is carried out for 50-60min at the rotating speed of 3000-3500 r/min.
The aim of the invention can be achieved by the following technical scheme:
Table of calcium lignosulfonate particle composition:
| pH value of | Solid material | Water insoluble material | Sugar | Lignin sulfonate | Bulk density of | Ash content |
| 4-6 | 93％ | 1.5％ | 9-14％ | 60-65％ | 205kg/m3 | 12-13％ |
As a preferred embodiment of the present invention, all of the SDS emulsifiers used in the examples and comparative examples were sodium dodecyl sulfate.
The invention has the beneficial effects that:
(1) The modified maleated rosin modified ester is obtained through the joint reaction of the maleated rosin, the castor oil and the polyethylene glycol, so that the characteristics of degradability, heat resistance, hydrophobicity and the like of the rosin are maintained, and the advantages of high gloss, high hardness, solvent resistance, high attaching strength and the like of the water-based ink are increased; the modified ester of the maleated rosin with multiple functional groups can be better compatible with organic and inorganic pigments, and the product stability is improved and the universality is improved by adding the rosin emulsifier and the similar structure of the rosin emulsifier and the maleated rosin.
(2) According to the invention, natural degradable rosin resin is adopted for modification, castor oil and polyethylene glycol are used for esterification together, and the obtained soluble maleated rosin modified ester can be dissolved in water and ethanol to form colloidal solution or emulsion, so that when the soluble maleated rosin modified ester is used for a degradable binder of water-based ink, the water-based ink has remarkable storage stability and drying time.
(3) The stannous oxalate and the p-toluenesulfonic acid can be combined to act synergistically, so that the activity of the catalyst is improved. The p-toluenesulfonic acid can react with hydroxyl groups in the maleated rosin, castor oil and polyethylene glycol to generate an intermediate, and stannous oxalate can react with the intermediate to generate a substance with good nucleophilic activity, so that the esterification reaction is promoted, the esterification reaction is more prone to generate a target product, and side reactions are avoided.
(4) The invention can effectively promote the implementation of the esterification reaction by adopting the combination of stannous oxalate and p-toluenesulfonic acid. Specifically, the combination can promote castor oil to participate in esterification reaction, and under the action of an initiator, two active free radicals are generated in a calcium lignosulfonate structure. The first radical is the conversion of phenolic hydroxyl groups to phenoxy radicals, and the second is the transfer of partially reactive phenoxy radicals to the carbon at the 5-position adjacent to phenolic hydroxyl groups to form carbon radicals. Meanwhile, the double bond of the acrylic acid is broken to generate a free radical active site which becomes a receptor of calcium lignosulfonate, so that chain initiation reaction of copolymerization reaction of the calcium lignosulfonate, the acrylic acid and the castor oil is initiated. The free radical active site of the acrylic acid and the hydroxyl of castor oil, the hydroxyl of polyethylene glycol and the phenolic hydroxyl on the benzene ring of lignin sulfonate are subjected to crosslinking reaction, so that the water-based ink has a certain crosslinking structure. After film formation, this structure gives the ink greater hardness and cohesive strength.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description is given below with reference to the embodiments, structures, features and effects according to the present invention.
An aqueous oil green printing process for paperboard comprising the steps of:
s1, performing sheet forming, proofing, imposition and printing down treatment according to specifications to obtain a printing plate;
s2, filling water-based ink into an ink duct of a printer;
s3, placing the printing substrate in a feeding area and conveying the printing substrate to a printer;
s4, printing operation of spraying water-based ink on the printing substrate by adopting a printer;
s5, drying the water-based ink on the surface of the printing substrate after the printing operation by adopting a dryer;
S6, arranging and packaging the dried printed substrates.
The print substrate is paperboard, which is one or more of linerboard, kraft linerboard, yellow paperboard, white paperboard, and impregnated liner paperboard.
Example 1
The water-based ink comprises the following components in parts by weight:
40.00 parts of a binder, 10.00 parts of iron oxide red, 1.2 parts of polyoxypropylene ethylene oxide glycerol ether, 0.4 part of a dispersing agent, 0.5 part of a thickening agent, 10.00 parts of isopropanol, 0.2 part of ammonia water and 20 parts of deionized water; the thickener is Pick BYK-420;
The preparation method of the binder comprises the following steps:
1) Stirring and mixing the maleated rosin, castor oil, polyethylene glycol and a catalyst, and then carrying out heating reaction in an inert atmosphere to obtain maleated rosin modified ester; wherein the catalyst is prepared from stannous oxalate and p-toluenesulfonic acid according to a mass ratio of 5.0:1, mixing; the inert atmosphere is nitrogen atmosphere; the heating reaction condition is that the reaction is carried out for 2.5 hours at the temperature of 230 ℃; the mass ratio of the maleated rosin to the castor oil to the polyethylene glycol to the catalyst is 40:20.0:60:0.6; the molecular weight of the polyethylene glycol is 200;
2) Heating the modified maleated rosin ester, adding the rosin emulsifier, stirring and mixing, adding deionized water, heating and stirring, cooling, and sieving to obtain mixed emulsion; wherein the heating temperature is raised to 60 ℃; the stirring and mixing conditions are that the mixture is emulsified for 45min at the temperature of 120 ℃ at the rotating speed of 300 r/min; the heating and stirring conditions are that stirring is carried out for 5min at the temperature of 95 ℃ at the rotating speed of 700 r/min; the cooling temperature is cooled to 40 ℃; the sieving condition is that sieving with 500 mesh sieve; the rosin emulsifier is ONIST APS-350 emulsifier;
3) Adding a monomer mixture, a mixed emulsifier and deionized water into the mixed emulsion, stirring and mixing, regulating the pH value, heating, stirring and mixing, and adding an initiator for heating reaction to obtain a binder; wherein the mass ratio of the mixed emulsion to the monomer mixture to the mixed emulsifier to the deionized water to the initiator is 10.5:44.0:8:80:1.3; the monomer mixture is prepared from butyl acrylate, methyl methacrylate and acrylic acid according to a mass ratio of 1:1: 0.22; the mixed emulsifier is an SDS emulsifier; the condition for adjusting the pH value is that 15 mass percent ammonia water is adopted to adjust the pH value to 7; the temperature of the heating, stirring and mixing is 60 ℃; the initiator is potassium persulfate, and the heating reaction condition is that the reaction is carried out for 3.5 hours at the temperature of 85 ℃;
The preparation method of the pretreated calcium lignosulfonate comprises the following steps:
Mixing calcium lignosulfonate particles with sulfuric acid solution, performing ultrasonic treatment, filtering, taking filtrate, adding ethanol solution, stirring and mixing, standing, filtering, taking solid, and drying to obtain a pretreatment dispersing agent; the mass ratio of the calcium lignosulfonate particles to the sulfuric acid solution to the ethanol solution is 1:5:5, a step of; the mass concentration of the sulfuric acid solution is 10%; the ethanol solution is prepared from ethanol and deionized water according to a volume ratio of 8:1, mixing; the drying condition is that the drying is carried out for 24 hours at the temperature of 50 ℃;
the preparation method of the water-based ink comprises the following steps:
Stirring the binder and the defoamer for 10min at a rotation speed of 2000r/min, grinding for 30min, adding pigment, dispersant, thickener, isopropanol, ammonia water and deionized water, and stirring for 50min at a rotation speed of 3000r/min to obtain the water-based ink.
Example 2
The water-based ink comprises the following components in parts by weight:
44 parts of a binder, 11 parts of iron oxide red, 1.3 parts of polyoxypropylene ethylene oxide glycerol ether, 0.5 part of a dispersing agent, 0.6 part of a thickening agent, 11 parts of isopropanol, 0.8 part of ammonia water and 24 parts of deionized water; the thickener is Pick BYK-420;
The preparation method of the binder comprises the following steps:
1) Stirring and mixing the maleated rosin, castor oil, polyethylene glycol and a catalyst, and then carrying out heating reaction in an inert atmosphere to obtain maleated rosin modified ester; wherein the catalyst is prepared from stannous oxalate and p-toluenesulfonic acid according to a mass ratio of 5.1:1, mixing; the inert atmosphere is nitrogen atmosphere; the heating reaction condition is that the reaction is carried out for 2.6 hours at the temperature of 232 ℃; the mass ratio of the maleated rosin to the castor oil to the polyethylene glycol to the catalyst is 40:20.5:60:0.64; the molecular weight of the polyethylene glycol is 200;
2) Heating the modified maleated rosin ester, adding the rosin emulsifier, stirring and mixing, adding deionized water, heating and stirring, cooling, and sieving to obtain mixed emulsion; wherein the heating temperature is raised to 60 ℃; the stirring and mixing conditions are that the mixture is emulsified for 48min at the temperature of 120 ℃ and the rotating speed of 320 r/min; the heating and stirring conditions are that stirring is carried out for 6min at the temperature of 95 ℃ and the rotating speed of 720 r/min; the cooling temperature is cooled to 40 ℃; the sieving condition is that sieving with 500 mesh sieve; the rosin emulsifier is ONIST APS-350 emulsifier;
3) Adding a monomer mixture, a mixed emulsifier and deionized water into the mixed emulsion, stirring and mixing, regulating the pH value, heating, stirring and mixing, and adding an initiator for heating reaction to obtain a binder; wherein the mass ratio of the mixed emulsion to the monomer mixture to the mixed emulsifier to the deionized water to the initiator is 10.7:44.3:8:80:1.3; the monomer mixture is prepared from butyl acrylate, methyl methacrylate and acrylic acid according to a mass ratio of 1:1: 0.23; the mixed emulsifier is an SDS emulsifier; the condition for adjusting the pH value is that 15 mass percent ammonia water is adopted to adjust the pH value to 7.2; the temperature of the heating, stirring and mixing is 62 ℃; the initiator is potassium persulfate, and the heating reaction condition is that the reaction is carried out for 3.6 hours at 86 ℃;
The preparation method of the pretreated calcium lignosulfonate comprises the following steps:
Mixing calcium lignosulfonate particles with sulfuric acid solution, performing ultrasonic treatment, filtering, taking filtrate, adding ethanol solution, stirring and mixing, standing, filtering, taking solid, and drying to obtain a pretreatment dispersing agent; the mass ratio of the calcium lignosulfonate particles to the sulfuric acid solution to the ethanol solution is 1:5:5, a step of; the mass concentration of the sulfuric acid solution is 10%; the ethanol solution is prepared from ethanol and deionized water according to a volume ratio of 8:1, mixing; the drying condition is that the drying is carried out for 24 hours at the temperature of 50 ℃;
the preparation method of the water-based ink comprises the following steps:
stirring the binder and the defoamer for 11min at the rotation speed of 2100r/min, grinding for 32min, adding pigment, dispersant, thickener, isopropanol, ammonia water and deionized water, and stirring for 52min at the rotation speed of 3100r/min to obtain the water-based ink.
Example 3
The water-based ink comprises the following components in parts by weight:
48 parts of a binder, 12 parts of iron oxide red, 1.4 parts of polyoxypropylene ethylene oxide glycerol ether, 0.6 part of a dispersing agent, 0.7 part of a thickening agent, 12 parts of isopropanol, 1.3 parts of ammonia water and 28 parts of deionized water; the thickener is Pick BYK-420;
The preparation method of the binder comprises the following steps:
1) Stirring and mixing the maleated rosin, castor oil, polyethylene glycol and a catalyst, and then carrying out heating reaction in an inert atmosphere to obtain maleated rosin modified ester; wherein the catalyst is prepared from stannous oxalate and p-toluenesulfonic acid according to a mass ratio of 5.2:1, mixing; the inert atmosphere is nitrogen atmosphere; the heating reaction condition is that the reaction is carried out for 2.7 hours at 234 ℃; the mass ratio of the maleated rosin to the castor oil to the polyethylene glycol to the catalyst is 40:21:60:0.68; the molecular weight of the polyethylene glycol is 200;
2) Heating the modified maleated rosin ester, adding the rosin emulsifier, stirring and mixing, adding deionized water, heating and stirring, cooling, and sieving to obtain mixed emulsion; wherein the heating temperature is raised to 60 ℃; the stirring and mixing conditions are that the mixture is emulsified for 51min at the temperature of 120 ℃ and the rotating speed of 340 r/min; the heating and stirring conditions are that stirring is carried out for 7min at the temperature of 95 ℃ at the rotating speed of 740 r/min; the cooling temperature is cooled to 40 ℃; the sieving condition is that sieving with 500 mesh sieve; the rosin emulsifier is ONIST APS-350 emulsifier;
3) Adding a monomer mixture, a mixed emulsifier and deionized water into the mixed emulsion, stirring and mixing, regulating the pH value, heating, stirring and mixing, and adding an initiator for heating reaction to obtain a binder; wherein the mass ratio of the mixed emulsion to the monomer mixture to the mixed emulsifier to the deionized water to the initiator is 10.9:44.6:8:80:1.3; the monomer mixture is prepared from butyl acrylate, methyl methacrylate and acrylic acid according to a mass ratio of 1:1: 0.24; the mixed emulsifier is an SDS emulsifier; the condition for adjusting the pH value is that 15 mass percent ammonia water is adopted to adjust the pH value to 7.4; the temperature of the heating, stirring and mixing is 64 ℃; the initiator is potassium persulfate, and the heating reaction condition is that the reaction is carried out for 3.7 hours at the temperature of 87 ℃;
The preparation method of the pretreated calcium lignosulfonate comprises the following steps:
Mixing calcium lignosulfonate particles with sulfuric acid solution, performing ultrasonic treatment, filtering, taking filtrate, adding ethanol solution, stirring and mixing, standing, filtering, taking solid, and drying to obtain a pretreatment dispersing agent; the mass ratio of the calcium lignosulfonate particles to the sulfuric acid solution to the ethanol solution is 1:5:5, a step of; the mass concentration of the sulfuric acid solution is 10%; the ethanol solution is prepared from ethanol and deionized water according to a volume ratio of 8:1, mixing; the drying condition is that the drying is carried out for 24 hours at the temperature of 50 ℃;
the preparation method of the water-based ink comprises the following steps:
Stirring the binder and the defoamer for 12min at a rotation speed of 2200r/min, grinding for 34min, adding pigment, dispersant, thickener, isopropanol, ammonia water and deionized water, and stirring for 54min at a rotation speed of 3200r/min to obtain the water-based ink.
Example 4
The water-based ink comprises the following components in parts by weight:
52 parts of a binder, 13 parts of iron oxide red, 1.5 parts of polyoxypropylene ethylene oxide glycerol ether, 0.8 part of a dispersing agent, 0.8 part of a thickening agent, 13 parts of isopropanol, 1.9 parts of ammonia water and 32 parts of deionized water; the thickener is Pick BYK-420;
The preparation method of the binder comprises the following steps:
1) Stirring and mixing the maleated rosin, castor oil, polyethylene glycol and a catalyst, and then carrying out heating reaction in an inert atmosphere to obtain maleated rosin modified ester; wherein the catalyst is prepared from stannous oxalate and p-toluenesulfonic acid according to a mass ratio of 5.3:1, mixing; the inert atmosphere is nitrogen atmosphere; the heating reaction condition is that the reaction is carried out for 2.8 hours at 236 ℃; the mass ratio of the maleated rosin to the castor oil to the polyethylene glycol to the catalyst is 40:21.5:60:0.72; the molecular weight of the polyethylene glycol is 200;
2) Heating the modified maleated rosin ester, adding the rosin emulsifier, stirring and mixing, adding deionized water, heating and stirring, cooling, and sieving to obtain mixed emulsion; wherein the heating temperature is raised to 60 ℃; the stirring and mixing conditions are that the mixture is emulsified for 54min at the temperature of 120 ℃ and the rotating speed of 360 r/min; the heating and stirring conditions are that stirring is carried out for 8min at the temperature of 95 ℃ at the rotating speed of 760 r/min; the cooling temperature is cooled to 40 ℃; the sieving condition is that sieving with 500 mesh sieve; the rosin emulsifier is ONIST APS-350 emulsifier;
3) Adding a monomer mixture, a mixed emulsifier and deionized water into the mixed emulsion, stirring and mixing, regulating the pH value, heating, stirring and mixing, and adding an initiator for heating reaction to obtain a binder; wherein, the mass ratio of the mixed emulsion, the monomer mixture, the mixed emulsifier, the deionized water and the initiator is 11.1:44.9:8:80:1.3; the monomer mixture is prepared from butyl acrylate, methyl methacrylate and acrylic acid according to a mass ratio of 1:1: 0.25; the mixed emulsifier is an SDS emulsifier; the condition for adjusting the pH value is that 15 mass percent ammonia water is adopted to adjust the pH value to 7.6; the temperature of the heating, stirring and mixing is 66 ℃; the initiator is potassium persulfate, and the heating reaction condition is that the reaction is carried out for 3.8 hours at 88 ℃;
The preparation method of the pretreated calcium lignosulfonate comprises the following steps:
Mixing calcium lignosulfonate particles with sulfuric acid solution, performing ultrasonic treatment, filtering, taking filtrate, adding ethanol solution, stirring and mixing, standing, filtering, taking solid, and drying to obtain a pretreatment dispersing agent; the mass ratio of the calcium lignosulfonate particles to the sulfuric acid solution to the ethanol solution is 1:5:5, a step of; the mass concentration of the sulfuric acid solution is 10%; the ethanol solution is prepared from ethanol and deionized water according to a volume ratio of 8:1, mixing; the drying condition is that the drying is carried out for 24 hours at the temperature of 50 ℃;
the preparation method of the water-based ink comprises the following steps:
Stirring the binder and the defoamer for 13min at 2300r/min, grinding for 36min, adding pigment, dispersant, thickener, isopropanol, ammonia water and deionized water, and stirring for 56min at 3300r/min to obtain the water-based ink.
Example 5
The water-based ink comprises the following components in parts by weight:
56 parts of a binder, 14 parts of iron oxide red, 1.6 parts of polyoxypropylene ethylene oxide glycerol ether, 0.9 part of a dispersing agent, 0.9 part of a thickening agent, 14 parts of isopropanol, 2.4 parts of ammonia water and 36 parts of deionized water; the thickener is Pick BYK-420;
The preparation method of the binder comprises the following steps:
1) Stirring and mixing the maleated rosin, castor oil, polyethylene glycol and a catalyst, and then carrying out heating reaction in an inert atmosphere to obtain maleated rosin modified ester; wherein the catalyst is prepared from stannous oxalate and p-toluenesulfonic acid according to a mass ratio of 5.4:1, mixing; the inert atmosphere is nitrogen atmosphere; the heating reaction condition is that the reaction is carried out for 2.9 hours at the temperature of 238 ℃; the mass ratio of the maleated rosin to the castor oil to the polyethylene glycol to the catalyst is 40:22:60:0.76; the molecular weight of the polyethylene glycol is 200;
2) Heating the modified maleated rosin ester, adding the rosin emulsifier, stirring and mixing, adding deionized water, heating and stirring, cooling, and sieving to obtain mixed emulsion; wherein the heating temperature is raised to 60 ℃; the stirring and mixing conditions are that the mixture is emulsified for 57min at the temperature of 120 ℃ and the rotating speed of 380 r/min; the heating and stirring conditions are that stirring is carried out for 9min at the temperature of 95 ℃ and the rotation speed of 780 r/min; the cooling temperature is cooled to 40 ℃; the sieving condition is that sieving with 500 mesh sieve; the rosin emulsifier is ONIST APS-350 emulsifier;
3) Adding a monomer mixture, a mixed emulsifier and deionized water into the mixed emulsion, stirring and mixing, regulating the pH value, heating, stirring and mixing, and adding an initiator for heating reaction to obtain a binder; wherein, the mass ratio of the mixed emulsion, the monomer mixture, the mixed emulsifier, the deionized water and the initiator is 11.3:45.2:8:80:1.3; the monomer mixture is prepared from butyl acrylate, methyl methacrylate and acrylic acid according to a mass ratio of 1:1: 0.26; the mixed emulsifier is an SDS emulsifier; the condition for adjusting the pH value is that 15 mass percent ammonia water is adopted to adjust the pH value to 7.8; the temperature of the heating, stirring and mixing is 68 ℃; the initiator is potassium persulfate, and the heating reaction condition is that the reaction is carried out for 3.9 hours at 89 ℃;
The preparation method of the pretreated calcium lignosulfonate comprises the following steps:
Mixing calcium lignosulfonate particles with sulfuric acid solution, performing ultrasonic treatment, filtering, taking filtrate, adding ethanol solution, stirring and mixing, standing, filtering, taking solid, and drying to obtain a pretreatment dispersing agent; the mass ratio of the calcium lignosulfonate particles to the sulfuric acid solution to the ethanol solution is 1:5:5, a step of; the mass concentration of the sulfuric acid solution is 10%; the ethanol solution is prepared from ethanol and deionized water according to a volume ratio of 8:1, mixing; the drying condition is that the drying is carried out for 24 hours at the temperature of 50 ℃;
the preparation method of the water-based ink comprises the following steps:
Stirring the binder and the defoamer for 14min at 2400r/min, grinding for 38min, adding pigment, dispersant, thickener, isopropanol, ammonia water and deionized water, and stirring for 58min at 3400r/min to obtain the water-based ink.
Example 6
The water-based ink comprises the following components in parts by weight:
60.00 parts of a binder, 15.00 parts of iron oxide red, 1.7 parts of polyoxypropylene ethylene oxide glycerol ether, 1.0 part of a dispersing agent, 1.0 part of a thickening agent, 15.00 parts of isopropanol, 3.0 parts of ammonia water and 40 parts of deionized water; the thickener is Pick BYK-420;
The preparation method of the binder comprises the following steps:
1) Stirring and mixing the maleated rosin, castor oil, polyethylene glycol and a catalyst, and then carrying out heating reaction in an inert atmosphere to obtain maleated rosin modified ester; wherein the catalyst is prepared from stannous oxalate and p-toluenesulfonic acid according to a mass ratio of 5.5:1, mixing; the inert atmosphere is nitrogen atmosphere; the heating reaction condition is that the reaction is carried out for 3.0h at the temperature of 240 ℃; the mass ratio of the maleated rosin to the castor oil to the polyethylene glycol to the catalyst is 40:22.5:60:0.8; the molecular weight of the polyethylene glycol is 200;
2) Heating the modified maleated rosin ester, adding the rosin emulsifier, stirring and mixing, adding deionized water, heating and stirring, cooling, and sieving to obtain mixed emulsion; wherein the heating temperature is raised to 60 ℃; the stirring and mixing conditions are that the mixture is emulsified for 60min at the temperature of 120 ℃ at the rotating speed of 400 r/min; the heating and stirring conditions are that stirring is carried out for 10min at the temperature of 95 ℃ at the rotating speed of 800 r/min; the cooling temperature is cooled to 40 ℃; the sieving condition is that sieving with 500 mesh sieve; the rosin emulsifier is ONIST APS-350 emulsifier;
3) Adding a monomer mixture, a mixed emulsifier and deionized water into the mixed emulsion, stirring and mixing, regulating the pH value, heating, stirring and mixing, and adding an initiator for heating reaction to obtain a binder; wherein, the mass ratio of the mixed emulsion, the monomer mixture, the mixed emulsifier, the deionized water and the initiator is 11.5:45.5:8:80:1.3; the monomer mixture is prepared from butyl acrylate, methyl methacrylate and acrylic acid according to a mass ratio of 1:1: 0.27; the mixed emulsifier is an SDS emulsifier; the condition for adjusting the pH value is that 15 mass percent ammonia water is adopted to adjust the pH value to 8; the temperature of the heating, stirring and mixing is 70 ℃; the initiator is potassium persulfate, and the heating reaction condition is that the reaction is carried out for 4.0h at the temperature of 90 ℃;
The preparation method of the pretreated calcium lignosulfonate comprises the following steps:
Mixing calcium lignosulfonate particles with sulfuric acid solution, performing ultrasonic treatment, filtering, taking filtrate, adding ethanol solution, stirring and mixing, standing, filtering, taking solid, and drying to obtain a pretreatment dispersing agent; the mass ratio of the calcium lignosulfonate particles to the sulfuric acid solution to the ethanol solution is 1:5:5, a step of; the mass concentration of the sulfuric acid solution is 10%; the ethanol solution is prepared from ethanol and deionized water according to a volume ratio of 8:1, mixing; the drying condition is that the drying is carried out for 24 hours at the temperature of 50 ℃;
the preparation method of the water-based ink comprises the following steps:
Stirring the binder and the defoamer for 15min at the rotation speed of 2500r/min, grinding for 40min, adding pigment, dispersant, thickener, isopropanol, ammonia water and deionized water, and stirring for 60min at the rotation speed of 3500r/min to obtain the water-based ink.
Comparative examples 1 to 3
The difference compared to example 5 is that the amounts of castor oil and polyethylene glycol and catalyst of comparative examples 1-3 are shown in Table 1, the remaining components, preparation steps and parameters are identical.
Table 1 (Unit: parts by weight)
| Castor oil | Polyethylene glycol | |
| Comparative example 1 | 0 | 82 |
| Comparative example 2 | 30 | 60 |
| Comparative example 3 | 82 | 0 |
Comparative examples 4 to 5
The difference compared with example 5 is that the stannous oxalate and p-toluenesulfonic acid amounts of comparative examples 4-5 are shown in Table 2, and the remaining components, preparation steps and parameters are identical.
Table 2 (Unit: parts by weight)
| Stannous oxalate | Para-toluene sulfonic acid | |
| Comparative example 4 | 6.4 | 0 |
| Comparative example 5 | 0 | 6.4 |
Comparative example 6
The difference compared to example 5 is that no pretreatment of calcium lignosulfonate was performed and the remaining components, preparation steps and parameters were identical.
The aqueous inks prepared in examples 1 to 6 and comparative examples 1 to 6 were each tested as follows, and the test results thereof are shown in Table 3.
Storage stability test: 500mL of the aqueous inks prepared in examples 1 to 6 and comparative examples 1 to 6 were weighed and stored in a container at room temperature in a sealed manner, the appearance was observed periodically and the change in viscosity was measured, and the aqueous inks were standardized after four months if they were unchanged, and the test results are shown in Table 3.
TABLE 3 Table 3
| Storage stability | |
| Example 1 | + |
| Example 2 | + |
| Example 3 | + |
| Example 4 | + |
| Example 5 | + |
| Example 6 | + |
| Comparative example 1 | - |
| Comparative example 2 | - |
| Comparative example 3 | - |
| Comparative example 4 | - |
| Comparative example 5 | - |
| Comparative example 6 | - |
From the test results of Table 3, it is understood that "+" represents more than 4 months for examples 1 to 6 as compared with comparative examples 1 to 6; "-" means less than 4 months.
The storage stability of the water-based ink prepared by the invention is obviously better than that of comparative examples 1-6.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (6)
1. An aqueous oil green printing process for paperboard, the printing process comprising the steps of:
s1, performing sheet forming, proofing, imposition and printing down treatment according to specifications to obtain a printing plate;
s2, filling water-based ink into an ink duct of a printer;
s3, placing the printing substrate in a feeding area and conveying the printing substrate to a printer;
s4, printing operation of spraying water-based ink on the printing substrate by adopting a printer;
s5, drying the water-based ink on the surface of the printing substrate after the printing operation by adopting a dryer;
S6, arranging and packaging the dried printed substrates;
The water-based ink comprises the following components in parts by weight:
40.00-60.00 parts of binder, 10.00-15.00 parts of pigment, 1.2-1.7 parts of defoamer, 0.4-1.0 part of dispersant, 0.5-1.0 part of thickener, 10.00-15.00 parts of isopropanol, 0.2-3.0 parts of ammonia water and 20-40 parts of deionized water; the dispersing agent is pretreated calcium lignosulfonate;
The preparation method of the binder comprises the following steps:
1) Stirring and mixing the maleated rosin, castor oil, polyethylene glycol and a catalyst, and then carrying out heating reaction in an inert atmosphere to obtain maleated rosin modified ester; the catalyst is prepared from stannous oxalate and p-toluenesulfonic acid according to the mass ratio of 5.0-5.5:1, mixing; the inert atmosphere is nitrogen atmosphere; the heating reaction condition is that the reaction is carried out for 2.5 to 3.0 hours at the temperature of 230 to 240 ℃; the mass ratio of the maleated rosin to the castor oil to the polyethylene glycol to the catalyst is 40:20.0-22.5:60:0.6-0.8; the molecular weight of the polyethylene glycol is 200;
2) Heating the modified maleated rosin ester, adding the rosin emulsifier, stirring and mixing, adding deionized water, heating and stirring, cooling, and sieving to obtain mixed emulsion; the heating temperature is raised to 60 ℃; the stirring and mixing conditions are that the mixture is emulsified for 45-60min at the temperature of 120 ℃ at the rotating speed of 300-400 r/min; the heating and stirring conditions are that stirring is carried out for 5-10min at the temperature of 95 ℃ and the rotating speed of 700-800 r/min; the cooling temperature is cooled to 40 ℃; the sieving condition is that sieving with 500 mesh sieve; the rosin emulsifier is ONIST APS-350 emulsifier;
3) Adding a monomer mixture, a mixed emulsifier and deionized water into the mixed emulsion, stirring and mixing, regulating the pH value, heating, stirring and mixing, and adding an initiator for heating reaction to obtain a binder; the mass ratio of the mixed emulsion to the monomer mixture to the mixed emulsifier to the deionized water to the initiator is 10.5-11.5:44.0-45.5:8:80:1.3; the monomer mixture is prepared from butyl acrylate, methyl methacrylate and acrylic acid according to a mass ratio of 1:1: 0.22-0.27; the mixed emulsifier is one or two of OP-10 emulsifier and SDS emulsifier; the condition for adjusting the pH value is that 15 mass percent ammonia water is adopted to adjust the pH value to 7-8; the temperature of the heating, stirring and mixing is 60-70 ℃; the initiator is potassium persulfate, and the heating reaction condition is that the reaction is carried out for 3.5-4.0h at the temperature of 85-90 ℃;
The preparation method of the pretreated calcium lignosulfonate comprises the following steps:
mixing calcium lignosulfonate particles with sulfuric acid solution, performing ultrasonic treatment, filtering, taking filtrate, adding ethanol solution, stirring and mixing, standing, filtering, taking solid, and drying to obtain a pretreatment dispersing agent; wherein, the mass ratio of the calcium lignosulfonate particles to the sulfuric acid solution to the ethanol solution is 1:5:5, a step of; the mass concentration of the sulfuric acid solution is 10%; the ethanol solution is prepared from ethanol and deionized water according to a volume ratio of 8:1, mixing; the drying condition is that the drying is carried out for 24 hours at the temperature of 50 ℃.
2. An aqueous oil green printing process for paperboard according to claim 1, characterized in that: the print substrate is paperboard, which is one or more of linerboard, kraft linerboard, yellow paperboard, white paperboard, and impregnated liner paperboard.
3. An aqueous oil green printing process for paperboard according to claim 1, characterized in that it comprises step S7 after step S6, step S7 comprising the following steps:
S11, after the formal printing is finished, thoroughly cleaning the ink roller and the ink tank, and simultaneously removing the residual water-based ink on the surface of the printing substrate;
s12, cleaning the rubber roller by adopting the color conversion paste;
s13, adopting high-pressure steam to circularly clean the waterway system.
4. An aqueous oil green printing process for paperboard according to claim 1, characterized in that: the pigment is selected from one or more of iron oxide red, iron oxide yellow and iron oxide black; the defoaming agent is polyoxypropylene ethylene oxide glycerol ether; the thickener is Pick BYK-420.
5. The aqueous ink green printing process for paperboard according to claim 1, wherein the preparation method of the aqueous ink comprises the following steps:
and (3) stirring and mixing the binder and the defoamer, grinding, and then adding pigment, dispersant, thickener, isopropanol, ammonia water and deionized water for uniform stirring to obtain the water-based ink.
6. An aqueous oil green printing process for paperboard according to claim 5, wherein: in the preparation process of the water-based ink, stirring and mixing conditions are that stirring is carried out for 10-15min at the rotating speed of 2000-2500 r/min; the grinding time is 30-40min; the stirring condition is that stirring is carried out for 50-60min at the rotating speed of 3000-3500 r/min.
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| CN103613999A (en) * | 2013-11-28 | 2014-03-05 | 张家港威迪森化学有限公司 | Water-based ink |
| CN107227071A (en) * | 2016-03-24 | 2017-10-03 | 东洋油墨Sc控股株式会社 | Decorative panel is with aqueous ink composition, printed article and decorative panel layered product |
| CN106956528A (en) * | 2017-03-30 | 2017-07-18 | 桶天下环保科技有限公司 | The gravure printing technique of water-based ink |
| CN110561935A (en) * | 2019-09-10 | 2019-12-13 | 金石包装（嘉兴）有限公司 | gravure printing method adopting water-based ink |
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