CN115141512B - Water-based ink for pre-impregnated paper gravure printing and synthesis process thereof - Google Patents
Water-based ink for pre-impregnated paper gravure printing and synthesis process thereof Download PDFInfo
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- 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
- C09D11/102—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
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- 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
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- 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
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
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Abstract
The invention provides a water-based ink for pre-impregnated paper gravure printing, which comprises the following raw materials: the polyurethane resin comprises water-based resin, polyurethane resin, pigment, dispersing agent, 2-amino-2-methyl-1-propanol, surfactant, polyether modified siloxane, polyether siloxane copolymer, defoamer, isocyanate, ethylene glycol butyl ether, isothiazolinone and deionized water. The invention adopts a pure water system, which is green and environment-friendly; the ink system has low odor, is safe and easy to operate; the water-based ink has good paper wettability and transfer performance on prepreg paper, clear printing transfer dots, good leveling property and good adhesive force of the ink on the paper. Solves various problems of the traditional ink printing prepreg paper.
Description
Technical Field
The invention relates to the field of intaglio printing, in particular to water-based ink for pre-impregnated paper intaglio printing and a synthesis process thereof.
Background
Prepreg paper is an emerging base paper product in recent years, and the process of this paper differs from conventional decor paper processing in that: the traditional decorative paper is untreated base paper, and is subjected to gum dipping processing after being printed, so that the traditional process has high processing cost, strict requirements on gum dipping equipment and gum dipping process, and unstable product quality. The pre-impregnated paper is the paper which already contains glue, the gum dipping process is not needed, the processing cost is greatly saved, and the performance is more stable. The cost statistics are compared as follows:
from the aspect of cost statistics, the prepreg paper saves the later gum dipping cost, and has more market competitiveness under the condition of the same finished product performance.
Prepreg printing is relatively demanding in terms of printing process, and also in terms of ink properties and requirements. The inks of the prior art have the following drawbacks for printing pre-impregnated papers: 1) The traditional printing ink is loose and porous after being dried, has good air permeability, is favorable for infiltration of melamine glue after being immersed, and is suitable for printing of traditional Baoli paper and Huali paper (decoration paper printing traditional paper). However, the presoaked paper is adhesive paper, has no good permeability, adopts traditional ink, has overlarge surface tension, and is polymerized into dots after ink drops are transferred from printing plate net holes to the presoaked paper during printing, and is condensed into ink drops, and the ink is not well leveled and spread before being dried, so that orange peel of a printed product is caused; therefore, conventional decor paper inks are not suitable for prepreg paper; 2) Because the prepreg paper has high glue content and poor water absorbability, the water-based ink has poor surface transferability, and the water-based ink in the prior art is difficult to meet the requirement of the transfer performance of the prepreg paper; 3) The existing gravure printing ink has poor waterproof property, adhesive force and wettability in printing of the prepreg paper, and cannot meet the printing quality requirement of the prepreg paper. Therefore, there is an urgent need for an aqueous gravure ink that is well suited for use with prepreg paper.
Since prepreg paper is an emerging product, the market is low in quantity, the market lacks a special gravure water-based ink product for the prepreg paper, and the existing prepreg water-based ink has the following problems in the printing of the prepreg paper: poor transferability, point loss, poor leveling property, low adhesive force, poor adaptability of the ink to the prepreg paper and the like.
Disclosure of Invention
In order to solve the problems, the invention provides a water-based ink for pre-impregnated paper gravure printing and a preparation method thereof, and the following purposes are achieved: the water-based ink for the prepreg gravure printing has the advantages of good transferability, no point loss, good leveling property, strong adhesive force and good adaptability to the prepreg paper.
In order to achieve the above object, the present invention adopts the following technical scheme:
the water-based ink for the pre-impregnated paper gravure printing comprises the following raw materials: the polyurethane resin comprises water-based resin, polyurethane resin, pigment, dispersing agent, 2-amino-2-methyl-1-propanol, surfactant, polyether modified siloxane, polyether siloxane copolymer, defoamer, isocyanate, ethylene glycol butyl ether, isothiazolinone and deionized water.
Preferably, the aqueous resin is: any one of polyethylenimine and quaternized polyethylenimine, wherein the solid content of the resin is 35% -38%; the polyurethane resin comprises the following components: the hydroxyl value of the aqueous polyurethane modified acrylic emulsion is 90-95mgKOH/g, and the solid content is 41-43%.
Preferably, the dispersant: the active content is 50%; the humectant is any one of ethylene glycol butyl ether and ethylene glycol; the pigment is any one or a combination of a plurality of titanium dioxide, carbon black, phthalocyanine blue, lithol red and iron red.
Preferably, the water-based ink for pre-impregnated paper gravure printing comprises the following raw materials in parts by weight: 20-55 parts of water-based resin, 15-50 parts of polyurethane resin, 10-50 parts of pigment, 5-15 parts of dispersing agent, 1-4 parts of 2-amino-2-methyl-1-propanol, 1-2 parts of surfactant, 0.8-2 parts of polyether modified siloxane, 1.5-2 parts of polyether siloxane copolymer, 0.2-0.4 part of defoamer, 3-6 parts of flatting agent, 0.2-0.8 part of isocyanate, 5-15 parts of ethylene glycol butyl ether, 0.1-0.5 part of isothiazolinone and 78g of deionized water.
Further preferably, the water-based ink for pre-impregnated paper gravure printing comprises the following raw materials in parts by weight: the raw materials are as follows in parts by weight: 45-55 parts of water-based resin, 40-50 parts of polyurethane resin, 50 parts of pigment, 10 parts of dispersing agent, 2-4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 0.8-2 parts of polyether modified siloxane, 1.5-2 parts of polyether siloxane copolymer, 0.2-0.4 part of defoamer, 3-6 parts of flatting agent, 0.2-0.8 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
Further preferably, the water-based ink for pre-impregnated paper gravure printing comprises the following raw materials in parts by weight: the raw materials are as follows in parts by weight: 50 parts of polyethyleneimine, 45 parts of polyurethane resin, 50 parts of pigment, 10 parts of dispersing agent, 4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 2 parts of polyether modified siloxane, 2 parts of polyether siloxane copolymer, 0.2 part of defoamer, 6 parts of leveling agent, 0.8 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78g of deionized water.
A synthesis process of water-based ink for pre-impregnated paper gravure printing comprises the following steps: preparing ink-regulating oil, preparing color paste and preparing finished products.
The preparation of the varnish comprises the following steps: uniformly mixing 2-amino-2-methyl-1-propanol with part of deionized water to obtain a solution A; uniformly mixing aqueous resin and part of polyurethane resin to obtain a solution B; uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 60-70 ℃ by adopting water bath; adding the rest polyurethane resin into the mixed solution C, introducing into a dispersing machine, and dispersing for 10-20 minutes at the stirring speed of 500-700r/min to obtain the varnish.
The preparation method comprises the following steps: and sequentially mixing the dispersing agent, polyether modified siloxane, the defoaming agent, the rest deionized water, ethylene glycol butyl ether and pigment, dispersing for 60+/-10 minutes at the stirring speed of 600-800 r/min, putting into a grinder, grinding for 60+/-10 minutes at the rotating speed of 1280r/min, and grinding until the particle size is 5-8 mu m, thus obtaining the color paste.
The preparation of the finished product comprises the following steps: mixing the ink-setting oil, color paste and the rest raw materials, and dispersing in a dispersing machine for 40+/-5 minutes at the stirring speed of 200-300r/min to obtain the finished ink.
The invention has the following beneficial effects:
(1) Solves the defect that the traditional water-based ink is not suitable for the prepreg paper, and provides the water-based gravure printing ink suitable for the prepreg paper, which has strong adhesive force to the prepreg paper, good drying property, good leveling property and good transferability;
(2) The invention adopts a pure water system, which is green and environment-friendly; the synthesis system has low odor, is safe and easy to operate; the water-based gravure printing ink has good paper wettability and transfer performance on prepreg paper; the invention solves a plurality of problems of printing pre-impregnated paper, and has the advantages of clear printing transfer printing dots, full field, bright color, high drying speed and the like.
(3) The tinting strength of the water-based gravure printing ink reaches 98Abs, and the adhesive tape is torn by using 3M-600 adhesive force test, so that no decoloration exists; soaking in hot water of 90deg.C for 30min without decolorization; ageing resistance detection, wherein the ink has no obvious change; the storage stability is good; the drying speed can reach 80m/min, the film has no shrinkage cavity and small surface tension. The printing method is used for prepressing gravure printing, and has good printing effect.
Detailed Description
The present invention is further illustrated below with reference to specific examples, which are not intended to limit the invention in any way. In the examples, all reagents used were commercially available. The following description will be readily understood and appreciated by those skilled in the art.
Example 1 Water based ink for prepreg gravure printing
The water-based ink for the pre-impregnated paper gravure printing consists of the following raw materials in parts by weight: 50 parts of polyethyleneimine, 45 parts of polyurethane resin, 50 parts of carbon black, 10 parts of dispersing agent, 2 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 0.8 part of polyether modified siloxane, 1.5 parts of polyether siloxane copolymer, 0.4 part of defoamer, 0.2 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
The polyethyleneimine: the solid content is 35%;
the polyurethane resin: is aqueous polyurethane modified acrylic emulsion containing hydroxyl, and has a hydroxyl value: 90mgKOH/g with a solids content of 41%;
the dispersant is: an aqueous polyurethane dispersant; the active ingredients are N- (2-aminoethyl) sodium aminoethane sulfonate and 2- [ (2-aminoethyl) amino ] ethane sulfonate sodium salt, and the total content of the active ingredients is 50 percent (mass percent); purchased from Jiangsu pule Biotech Inc., model number: 34730-59-1;
the surfactant comprises: the model is SAGD-3675 which is a nonylphenol polyoxyethylene ether and acetylenic diol ethoxyl compound;
the defoamer: a silicone emulsion;
the model number of the isocyanate is YL-W6880E;
the isothiazolinones: the mass percentage is 20%.
A synthesis process of water-based ink for pre-impregnated paper gravure printing comprises the following steps:
step 1) preparing ink-regulating oil
(1) Uniformly mixing 1g of 2-amino-2-methyl-1-propanol and 48g of deionized water to obtain a solution A;
(2) uniformly mixing 50g of polyethyleneimine and 15g of polyurethane resin to obtain a solution B;
(3) and uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 60 ℃ by adopting a water bath. 30g of polyurethane resin was added to the mixed solution C and introduced into a dispersing machine, and dispersed at a stirring speed of 500r/min for 15 minutes, to obtain varnish.
Step 2) preparing color paste
Sequentially adding 10g of dispersing agent, 0.8g of polyether modified siloxane, 0.2g of defoamer, 30g of deionized water, 15g of ethylene glycol butyl ether and 50g of carbon black into a dispersing machine, mixing, dispersing in the dispersing machine for 60 minutes at a stirring speed of 600r/min, adding into a grinding machine, grinding for 60 minutes at a rotating speed of 1250r/min, and grinding to a particle size of 5 mu m to obtain the color paste.
Step 3) preparing a finished product
The ink setting oil obtained in the step 1), the color paste obtained in the step 2), 1.5g of polyether siloxane copolymer, 0.8g of surfactant, 0.2g of defoamer, 0.2g of isocyanate and 0.2g of isothiazolinone and 1g of 2-amino-2-methyl-1-propanol are mixed and dispersed in a dispersing machine for 40 minutes at a stirring speed of 200r/min, so that the finished ink is prepared.
The results of the performance test of the finished product prepared in example 1 are shown in Table 1.
TABLE 1
As can be seen from Table 1, the fineness of the ink was 8um, the pH value was 8.6, the tinting strength was 100Abs, and the viscosity was 24 "; the adhesive tape is torn by using the adhesive force of 3M-600, and no decolorization exists; soaking in hot water of 90deg.C for 30min without decolorization; ageing resistance detection, wherein the ink has no obvious change; the storage stability is good; but the drying speed is only 70m/min, the film has shrinkage cavities, the leveling property is poor, and the surface tension is overlarge.
Example 2 Water based ink for prepreg gravure printing
The water-based ink for the pre-impregnated paper gravure printing consists of the following raw materials in parts by weight: 45 parts of polyethyleneimine, 50 parts of polyurethane resin, 50 parts of carbon black, 10 parts of dispersing agent, 2.4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 1.5 parts of polyether modified siloxane, 2 parts of polyether siloxane copolymer, 0.2 part of defoamer, 3 parts of flatting agent (KYC 616), 0.6 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
The polyethyleneimine: the solid content is 38%;
the polyurethane resin: is aqueous polyurethane modified acrylic emulsion containing hydroxyl, and has a hydroxyl value: 95mgKOH/g with 43% solids;
the dispersant is: an aqueous polyurethane dispersant; the active ingredients are N- (2-aminoethyl) sodium aminoethane sulfonate and 2- [ (2-aminoethyl) amino ] ethane sulfonate sodium salt, and the total content of the active ingredients is 50 percent (mass percent);
the surfactant comprises: the model is SAGD-3675 which is a nonylphenol polyoxyethylene ether and acetylenic diol ethoxyl compound;
the defoamer: a silicone emulsion;
the leveling agent comprises: the acrylic acid modified copolymer comprises 50 mass percent of active ingredients and model number KYC616;
the model number of the isocyanate is YL-W6880E;
the isothiazolinones: the mass percentage is 20%.
A synthesis process of water-based ink for pre-impregnated paper gravure printing comprises the following steps:
step 1) preparing ink-regulating oil
(1) 1.4g of 2-amino-2-methyl-1-propanol and 48g of deionized water are uniformly mixed to obtain a solution A;
(2) uniformly mixing 45g of polyethyleneimine and 20g of polyurethane resin to obtain a solution B;
(3) and uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 70 ℃ by adopting a water bath. 30g of polyurethane resin was added to the mixed solution C and introduced into a dispersing machine, and dispersed at a stirring speed of 600r/min for 15 minutes, to obtain varnish.
Step 2) preparing color paste
Sequentially adding 10g of dispersing agent, 1.5g of polyether modified siloxane, 0.2g of defoamer, 30g of deionized water, 15g of ethylene glycol butyl ether and 50g of carbon black into a dispersing machine, mixing, dispersing in the dispersing machine for 60 minutes at a stirring speed of 800r/min, and grinding for 60 minutes at a rotating speed of 1300r/min by a grinding machine until the particle size is 8 mu m, thus obtaining the color paste.
Step 3) preparing a finished product
Mixing the ink-regulating oil obtained in the step 1), the color paste obtained in the step 2), 2g of polyether siloxane copolymer, 3g of flatting agent KYC-616, 0.8g of surfactant, 0.2g of defoamer, 0.6g of isocyanate, 0.2g of isothiazolinone and 1g of 2-amino-2-methyl-1-propanol, and dispersing in a dispersing machine for 40 minutes at a stirring speed of 300r/min to obtain the finished ink.
The results of the performance test of the finished product prepared in example 2 are shown in Table 2.
TABLE 2
As can be seen from Table 2, the fineness of the ink was 8um, the pH value was 8.9, the tinting strength was 105Abs, and the viscosity was 25 "; the adhesive tape is torn by using the adhesive force of 3M-600, and no decolorization exists; soaking in hot water of 90deg.C for 30min without decolorization; ageing resistance detection, wherein the ink has no obvious change; the storage stability is good; drying speed is 75m/min; however, the film still had a small amount of shrinkage cavity, and the surface tension was 41mN/m.
Example 3 Water based ink for prepreg gravure printing
The water-based ink for the pre-impregnated paper gravure printing consists of the following raw materials in parts by weight: 50 parts of polyethyleneimine, 45 parts of polyurethane resin, 50 parts of carbon black, 10 parts of dispersing agent, 4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 2 parts of polyether modified siloxane, 2 parts of polyether siloxane copolymer, 0.2 part of defoamer, 6 parts of flatting agent (KYC 616), 0.8 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
The polyethyleneimine: the solid content is 36%;
the polyurethane resin: is aqueous polyurethane modified acrylic emulsion containing hydroxyl, and has a hydroxyl value: 92mgKOH/g, solids content 42%;
the dispersant is: an aqueous polyurethane dispersant; the active ingredients are N- (2-aminoethyl) sodium aminoethane sulfonate and 2- [ (2-aminoethyl) amino ] ethane sulfonate sodium salt, and the total content of the active ingredients is 50 percent (mass percent); purchased from Jiangsu pule Biotech Inc., model number: 34730-59-1;
the surfactant comprises: the model is SAGD-3675 which is a nonylphenol polyoxyethylene ether and acetylenic diol ethoxyl compound;
the defoamer: a silicone emulsion;
the leveling agent comprises: the acrylic acid modified copolymer comprises 50 mass percent of active ingredients and model number KYC616;
the model number of the isocyanate is YL-W6880E;
the isothiazolinones: the mass percentage is 20%.
A synthesis process of water-based ink for pre-impregnated paper gravure printing comprises the following steps:
step 1) preparing ink-regulating oil
(1) Uniformly mixing 2g of 2-amino-2-methyl-1-propanol and 48g of deionized water to obtain a solution A;
(2) uniformly mixing 50g of polyethyleneimine and 15g of polyurethane resin to obtain a solution B;
(3) and uniformly mixing the solution A and the solution B to obtain a mixed solution C, and heating the mixed solution C to 65 ℃ by adopting a water bath. 30g of polyurethane resin was added to the mixed solution C and introduced into a dispersing machine, and dispersed at a stirring speed of 550r/min for 15 minutes, to obtain varnish.
Step 2) preparing color paste
Sequentially adding 10g of dispersing agent, 2g of polyether modified siloxane, 0.2g of defoamer, 30g of deionized water, 15g of ethylene glycol butyl ether and 50g of carbon black into a dispersing machine, mixing, dispersing for 60 minutes at a stirring speed of 700r/min in the dispersing machine, putting into a grinder, grinding for 60 minutes at a rotating speed of 1280r/min, and grinding until the particle size is 7 mu m, thus obtaining the color paste.
Step 3) preparing a finished product
Mixing the ink-regulating oil obtained in the step 1), the color paste obtained in the step 2), 2g of polyether siloxane copolymer, 6g of flatting agent KYC-616, 0.8g of surfactant, 0.2g of defoamer, 0.8g of isocyanate, 0.2g of isothiazolinone and 2g of 2-amino-2-methyl-1-propanol, and dispersing in a dispersing machine for 40 minutes at a stirring speed of 250r/min to obtain the finished ink.
The results of the performance test of the finished product prepared in example 3 are shown in Table 3.
TABLE 3 Table 3
As can be seen from Table 3, the fineness of the ink was 8um, the pH value was 9.2, the tinting strength was 98Abs, and the viscosity was 24 "; the adhesive tape is torn by using the adhesive force of 3M-600, and no decolorization exists; soaking in hot water of 90deg.C for 30min without decolorization; ageing resistance detection, wherein the ink has no obvious change; the storage stability is good; the drying speed was 80m/min, the film had no shrinkage cavity, and the surface tension was 38mN/m.
Example 4 Water based ink for prepreg gravure printing
The water-based ink for the pre-impregnated paper gravure printing consists of the following raw materials in parts by weight: 55 parts of polyethyleneimine, 40 parts of polyurethane resin, 50 parts of carbon black, 10 parts of dispersing agent, 4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 2 parts of polyether modified siloxane, 2 parts of polyether siloxane copolymer, 0.2 part of defoamer, 6 parts of flatting agent (KYC 616), 0.8 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water.
The polyethyleneimine: the solid content is 37%;
the polyurethane resin: is aqueous polyurethane modified acrylic emulsion containing hydroxyl, and has a hydroxyl value: 94mgKOH/g with a solids content of 43%;
the dispersant is: an aqueous polyurethane dispersant; the active ingredients are N- (2-aminoethyl) sodium aminoethane sulfonate and 2- [ (2-aminoethyl) amino ] ethane sulfonate sodium salt, and the total content of the active ingredients is 50 percent (mass percent); purchased from Jiangsu pule Biotech Inc., model number: 34730-59-1;
the surfactant comprises: the model is SAGD-3675 which is a nonylphenol polyoxyethylene ether and acetylenic diol ethoxyl compound;
the defoamer: a silicone emulsion;
the leveling agent comprises: the acrylic acid modified copolymer comprises 50 mass percent of active ingredients and model number KYC616;
the model number of the isocyanate is YL-W6880E;
the isothiazolinones: the mass percentage is 20%.
A synthesis process of water-based ink for pre-impregnated paper gravure printing comprises the following steps:
step 1) preparing ink-regulating oil
(1) Uniformly mixing 2g of 2-amino-2-methyl-1-propanol and 48g of deionized water to obtain a solution A;
(2) uniformly mixing 55g of polyethyleneimine and 10g of polyurethane resin to obtain a solution B;
(3) and uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 62 ℃ by adopting a water bath. 30g of polyurethane resin was added to the mixed solution C and introduced into a dispersing machine, and dispersed at a stirring speed of 580r/min for 15 minutes, to obtain varnish.
Step 2) preparing color paste
Sequentially adding 10g of dispersing agent, 2g of polyether modified siloxane, 0.2g of defoamer, 30g of deionized water, 15g of ethylene glycol butyl ether and 50g of carbon black into a dispersing machine, mixing, dispersing for 60 minutes at a stirring speed of 650r/min in the dispersing machine, putting into a grinder, grinding for 60 minutes at a rotating speed of 1260r/min, and grinding until the particle size is 6 mu m, thus obtaining the color paste.
Step 3) preparing a finished product
Mixing the ink-regulating oil obtained in the step 1), the color paste obtained in the step 2), 2g of polyether siloxane copolymer, 6g of flatting agent KYC-616, 0.8g of surfactant, 0.2g of defoamer, 0.8g of isocyanate, 0.2g of isothiazolinone and 2g of 2-amino-2-methyl-1-propanol, and dispersing in a dispersing machine for 40 minutes at a stirring speed of 220r/min to obtain the finished ink.
The results of the performance test of the finished product prepared in example 4 are shown in Table 4.
TABLE 4 Table 4
As can be seen from Table 4, the fineness of the ink was 8um, the pH value was 9.2, the tinting strength was 99Abs, and the viscosity was 23 "; soaking in hot water of 90deg.C for 30min without decolorization; ageing resistance detection, wherein the ink has no obvious change; the storage stability is good; the drying speed is 80m/min, the film coating has no shrinkage cavity, and the surface tension is 38mN/m; but the tape was torn with 3M-600 adhesion test with slight discoloration.
From the above, it can be seen from tables 1 to 4 that the difference in the raw materials, the proportions, etc. used greatly affects the product, and example 3 is the most preferred example.
The ink and the process prepared by the invention have the following beneficial effects: 1) The ink production process and the ink use process have no volatile and flammable solvents, so that potential safety hazards in the production and use processes are avoided; 2) The ink production process and the ink use process have no VOC emission; 3) The printed matter printed by the pre-impregnated paper water-based gravure ink has no smell and high environmental protection; 4) The water-based gravure ink for the pre-impregnated paper has good transferability and leveling property, and solves the problem that the traditional decorative paper ink can not meet the requirement of printing decorative paper on the pre-impregnated paper.
The purchasing manufacturer of the raw materials of the invention:
the polyethyleneimine: purchased from Guangzhou Dynasty trade company, model A-1201;
the polyurethane resin: purchased from Shanghai Bert New Material technology Co., ltd., model number PU7310;
the polyether modified silicone: purchased from Guangzhou market banquet ancient trade company, model number KYC-648;
the polyether siloxane copolymer: purchased from Guangzhou market banquet ancient trade company, model number KYC641;
the silicone emulsion: available from Shandong Ruiyemei printing materials Co., ltd, model Tego-AIREX902W;
the isothiazolinones: available from Shandong Ruiyemei printing materials Co., ltd., model number: CMQ.
The pigments in examples 1-4 were carbon black, which was replaced with any one or a combination of titanium dioxide, phthalocyanine blue, lithol red, and iron oxide red, and only the color of the ink was changed without affecting the chemical properties of the ink. Therefore, in actual production, the pigment may be selected according to specific requirements, and examples are not listed in the present invention.
The percentages stated in the present invention are mass percentages unless otherwise indicated.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. An aqueous ink for prepreg gravure printing, characterized by: the preparation method comprises the following raw materials: the water-based resin, polyurethane resin, pigment, dispersing agent, 2-amino-2-methyl-1-propanol, surfactant, polyether modified siloxane KYC-648, polyether siloxane copolymer KYC641, defoamer, leveling agent, isocyanate, ethylene glycol butyl ether, isothiazolinone and deionized water; the raw materials are as follows in parts by weight: 50 parts of water-based resin, 45 parts of polyurethane resin, 50 parts of pigment, 10 parts of dispersing agent, 4 parts of 2-amino-2-methyl-1-propanol, 0.8 part of surfactant, 2 parts of polyether modified siloxane KYC-648, 641 parts of polyether siloxane copolymer KYC, 0.2 part of defoamer, 6 parts of flatting agent, 0.8 part of isocyanate, 15 parts of ethylene glycol butyl ether, 0.2 part of isothiazolinone and 78 parts of deionized water;
the water-based resin is polyethyleneimine, and the solid content is 35% -38%;
the polyurethane resin comprises the following components: the hydroxyl value of the aqueous polyurethane modified acrylic emulsion containing hydroxyl is 90-95mgKOH/g, and the solid content is 41-43%;
the dispersing agent comprises the following components: the active ingredients are N- (2-aminoethyl) sodium aminoethane sulfonate and 2- [ (2-aminoethyl) amino ] ethane sulfonate sodium salt, and the total content of the active ingredients is 50%;
the pigment is any one or a combination of a plurality of titanium dioxide, carbon black, phthalocyanine blue, lithol red and iron red.
2. The process for synthesizing the aqueous ink for pre-impregnated gravure printing according to claim 1, wherein the process comprises the following steps: the method comprises the following steps: preparing ink-regulating oil, preparing color paste and preparing finished products.
3. The process for synthesizing the aqueous ink for pre-impregnated gravure printing according to claim 2, wherein the process comprises the steps of: the preparation of the varnish comprises the following steps: uniformly mixing 2-amino-2-methyl-1-propanol with part of deionized water to obtain a solution A; uniformly mixing aqueous resin and part of polyurethane resin to obtain a solution B; uniformly mixing the solution A and the solution B to obtain a mixed solution C, and then heating the mixed solution C to 60-70 ℃ by adopting water bath; adding the rest polyurethane resin into the mixed solution C, introducing into a dispersing machine, and dispersing for 10-20 minutes at the stirring speed of 500-700r/min to obtain the varnish.
4. A process for synthesizing an aqueous ink for pre-impregnated intaglio printing according to claim 3, wherein: the preparation method comprises the following steps: and (3) mixing the dispersing agent, polyether modified siloxane KYC-648, the defoaming agent, the rest deionized water, ethylene glycol butyl ether and pigment in sequence, dispersing for 60+/-10 minutes at the stirring speed of 600-800 r/min, putting into a grinder, grinding for 60+/-10 minutes at the rotating speed of 1280r/min, and grinding to the particle size of 5-8 mu m to obtain the color paste.
5. The process for synthesizing an aqueous ink for prepreg gravure according to claim 4, wherein: the preparation of the finished product comprises the following steps: mixing the ink-setting oil, color paste and the rest raw materials, and dispersing in a dispersing machine for 40+/-5 minutes at the stirring speed of 200-300r/min to obtain the finished ink.
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| CN102382507A (en) * | 2011-09-06 | 2012-03-21 | 佛山市顺德区乐从镇盛昌油墨有限公司 | Hydrophilic ink for intaglio printing on surfaces of aluminum foils and preparation method thereof |
| CN108641472A (en) * | 2018-04-09 | 2018-10-12 | 天津科技大学 | General plastic intaglio printing water-based ink and preparation method |
| CN109233431A (en) * | 2018-07-24 | 2019-01-18 | 江苏唐彩油墨科技股份有限公司 | Water-borne decorative paper ink |
| CN109735166A (en) * | 2019-02-15 | 2019-05-10 | 临沂市鲁源浸渍纸业有限公司 | A kind of aqueous pre-impregnated paper and the general printing ink of PVC and its synthesis technology |
| WO2022079414A1 (en) * | 2020-10-14 | 2022-04-21 | Sun Chemical Corporation | Aqueous ink compositions |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013131924A1 (en) * | 2012-03-06 | 2013-09-12 | Oce-Technologies B.V. | Ink composition |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382507A (en) * | 2011-09-06 | 2012-03-21 | 佛山市顺德区乐从镇盛昌油墨有限公司 | Hydrophilic ink for intaglio printing on surfaces of aluminum foils and preparation method thereof |
| CN108641472A (en) * | 2018-04-09 | 2018-10-12 | 天津科技大学 | General plastic intaglio printing water-based ink and preparation method |
| CN109233431A (en) * | 2018-07-24 | 2019-01-18 | 江苏唐彩油墨科技股份有限公司 | Water-borne decorative paper ink |
| CN109735166A (en) * | 2019-02-15 | 2019-05-10 | 临沂市鲁源浸渍纸业有限公司 | A kind of aqueous pre-impregnated paper and the general printing ink of PVC and its synthesis technology |
| WO2022079414A1 (en) * | 2020-10-14 | 2022-04-21 | Sun Chemical Corporation | Aqueous ink compositions |
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