CN111500113B - Copper plate paper gravure water-based ink and preparation method thereof - Google Patents
Copper plate paper gravure water-based ink and preparation method thereof Download PDFInfo
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- CN111500113B CN111500113B CN202010505151.8A CN202010505151A CN111500113B CN 111500113 B CN111500113 B CN 111500113B CN 202010505151 A CN202010505151 A CN 202010505151A CN 111500113 B CN111500113 B CN 111500113B
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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
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
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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 copper plate paper gravure printing water-based ink and a preparation method thereof, wherein the water-based ink comprises the following components: the self-made modified alkali-soluble resin, the self-made poly (methyl) acrylate emulsion resin, the pigment and the defoaming agent; the invention adopts a water-based system, the detection of VOCs reaches YC/T207-2014 standard, and the invention does not contain ethanol and is completely green and environment-friendly; the storage life of the ink system is more than one year; the ink disclosed by the invention is fine in particle size, high in drying speed, high in glossiness, clear and complete in transfer printing on coated paper, good in wetting and leveling property, and capable of overcoming the printing defect of common ink on the coated paper of a cigarette packet.
Description
Technical Field
The invention relates to water-based ink and a preparation method thereof, in particular to water-based ink which can be printed on coated paper through gravure printing and a preparation method thereof.
Background
In recent years, the printing industry of China is turning to environmental protection and sustainable development transformation, and the 'oil-to-water' (solvent-to-water) transformation is the main direction of the development of the printing industry of China. Particularly in the cigarette packet coated paper printing industry, along with the increasingly strict requirement of the tobacco industry in China on the emission limit of Volatile Organic Compounds (VOCs) in cigarettes and packages thereof, green and environment-friendly printing materials are strongly required by cigarette packet printing enterprises.
Water-based ink is one of the main consumables for packaging printing, and is a special ink for printing methods other than offset printing, particularly gravure printing, in countries and regions such as europe and america. For cigarette packet printing, the solvent-based ink is very mature for gravure printing, but the national tobacco institute has promoted the tobacco safety to the same height of food safety, which leads to the increase of the industrial popularization of the water-based ink. However, the existing tobacco bale coated paper gravure printing water-based ink is still obviously inferior to the traditional solvent-based ink in the aspects of drying property, color vividness and the like, and has the problems of easiness in plate blocking, poor field leveling property and the like, so that the application of the water-based ink in the tobacco bale coated paper gravure printing industry is restricted.
Disclosure of Invention
In order to solve the difficult problem of the industry bottleneck, the invention provides the water-based ink for the intaglio printing of the coated paper, which has the advantages of high drying speed, high glossiness, clear and complete transfer printing on the coated paper and good wetting and leveling properties.
The technical scheme of the invention is as follows:
the gravure printing water-based ink for coated paper comprises the following raw materials in parts by weight:
20-30 parts of resin A, 20-40 parts of resin B, 20-55 parts of pigment, 0.08-0.1 part of defoaming agent A, 0.05-0.08 part of defoaming agent B and 4.84-14.87 parts of deionized water.
In the invention:
the pigment is preferably 53:1 aurora red (Clariant corporation), permanent yellow PY14 (zhjiang lily group ltd.), BF435(p.b. 15: 3, zhejiang lily group ltd.), SPECIAL BLACK 10(ORION corporation) or R900 (dupont corporation).
The defoaming agent A is preferably a polysiloxane-polyether copolymer defoaming agent
Foamex 810 (EVONIK), and silicone defoamer BYK 024 (BYK).
The defoamer B may be a lower alcohol defoamer (e.g.;
DF1760, demote corporation;
DF 1492, demote), silicone defoamers (e.g., Drewplus TS-4400, ASHLAND-AQUALON; drewplus T-4201, ASHLAND-AQUALON corporation; drewplus TS-4481, ASHLAND-AQUALON Co.) in any ratio, preferably lower alcohol defoaming agent, and particularly preferably lower alcohol defoaming agent
DF1760 (deutsche corp).
The "antifoam agent A" and "antifoam agent B" are not specifically defined, and the labels "A" and "B" are used only for distinguishing the different types of antifoam agents.
The resin A is a self-made modified alkali-soluble resin, and the preparation method comprises the following steps (the following parts are all parts by weight):
at room temperature (20-30 ℃), 100 parts of aqueous alkali-soluble resin
Adding BT 20(DSM company) into a reaction kettle, stirring at the speed of 300-500rpm, heating to 70-80 ℃, dropwise adding 30 parts of pH buffer AMP-95(Dow company) aqueous solution (the pH value of the resin liquid reaches 7.5-9 after dropwise adding) within 30-50min, cooling the system to room temperature, and filtering and discharging by using a 500-mesh nylon bag to obtain the resin A;
the 30 parts of the aqueous solution of the pH buffer AMP-95 is prepared by mixing the pH buffer AMP-95 and deionized water in equal weight.
The resin B is a self-made poly (methyl) acrylate emulsion resin, and the preparation method comprises the following steps (the following parts are all parts by weight):
adding 0.15 part of pH buffer AMP-95(Dow company), 5 parts of n-butyl acrylate monomer and 10 parts of deionized water into 85 parts of resin A at room temperature, stirring at 600rpm, heating to 82 ℃, adjusting the stirring speed to 200rpm, adding 4.3 parts of sodium persulfate aqueous solution, dropwise adding 60 parts of n-butyl acrylate monomer within 6h after the reaction system generates obvious blue light, dropwise adding a mixed solution of 5 parts of n-butyl acrylate monomer and 30 parts of methyl methacrylate monomer within 1h, dropwise adding 14.5 parts of sodium persulfate aqueous solution while the monomers are dropwise added, wherein the dropwise adding time of the sodium persulfate aqueous solution is 7.5h, namely: controlling the monomer to be dripped after 0.5h after all the monomer is dripped, then keeping the temperature of a reaction system and stirring for 1h, cooling to 65 ℃, adding 2.08 parts of tert-butyl hydrogen peroxide aqueous solution, keeping the temperature and stirring for 20min, adding 2.08 parts of rongalite aqueous solution, keeping the temperature and stirring for 20min, cooling to room temperature, and carrying out four-stage filtration by a 300-mesh nylon bag, a 2 um-aperture PP filter membrane, a 1 um-aperture PP filter membrane and a 0.45 um-aperture glass fiber filter membrane in sequence to obtain a resin B;
the 4.3 parts of sodium persulfate aqueous solution is obtained by dissolving 0.3 part of sodium persulfate in 4 parts of deionized water;
the 14.5 parts of sodium persulfate aqueous solution is prepared by dissolving 2 parts of sodium persulfate in 12.5 parts of deionized water;
the 2.08 parts of tert-butyl hydroperoxide aqueous solution is obtained by dissolving 0.08 part of tert-butyl hydroperoxide in 2 parts of deionized water;
the 2.08 parts of rongalite aqueous solution is obtained by dissolving 0.08 part of rongalite in 2 parts of deionized water.
The "resin A" and "resin B" have no special meaning, and the labels "A" and "B" are used only for distinguishing different kinds of resins.
The invention also provides a preparation method of the copper plate paper gravure water-based ink, which comprises the following steps (in parts by weight):
at room temperature, sequentially adding 20-30 parts of resin A, 4.84-14.87 parts of deionized water and 0.08-0.1 part of defoamer A into a dispersion kettle, uniformly stirring and mixing at the speed of 400rpm of 300-;
the specific meaning of the pigment particle size reaching 200-250nm is as follows: the grain diameters of the red ink, the yellow ink, the blue ink and the black ink are less than 200nm, and the grain diameter of the white ink is less than 250 nm.
The water-based ink can be printed on coated paper by a conventional gravure printing process.
Compared with the prior art, the invention has the beneficial effects that:
1. an aqueous system is adopted, VOCs detection reaches YC/T207-2014 standard, and the water-based organic light-emitting diode (VOCs) detection does not contain ethanol and is completely green and environment-friendly;
2. the storage life of the ink system is more than one year;
3. the ink disclosed by the invention is fine in particle size, high in drying speed, high in glossiness, clear and complete in transfer printing on coated paper, good in wetting and leveling property, and capable of overcoming the printing defect of common ink on the coated paper of a cigarette packet.
Drawings
FIG. 1 is a particle size distribution diagram of a self-made poly (meth) acrylate emulsion resin according to the present invention;
FIG. 2 is a graph showing a distribution of particle diameters of red ink according to example 1 of the present invention;
FIG. 3 is a graph showing the printing effect of the red ink printed on coated paper by a KPP gravure proofing machine according to example 1 of the present invention;
FIG. 4 is a graph showing the printing effect of commercial red ink printed on coated paper by a KPP gravure proofing machine;
FIG. 5 is a graph showing the printing effect of the yellow ink printed on coated paper by a KPP gravure proofing machine according to example 2 of the present invention;
FIG. 6 is a graph of the printing effect of commercial yellow ink printed on coated paper by a KPP gravure proofing machine;
FIG. 7 is a graph showing the printing effect of the blue ink printed on the copperplate paper film by the KPP gravure proofing machine according to example 3 of the present invention;
FIG. 8 is a graph showing the printing effect of commercial blue ink printed on a copperplate paper film by a KPP gravure proofing machine;
FIG. 9 is a graph showing the printing effect of the black ink printed on coated paper by a KPP gravure proofing machine according to example 4 of the present invention;
FIG. 10 is a graph showing the printing effect of commercial black ink printed on coated paper by a KPP gravure proofing machine;
FIG. 11 shows the actual printing pattern (brand: coconut king) of the product of the present invention for the customer;
fig. 12 shows the product of the invention used for the actual printing paper pattern (brand: Hongta mountain) of the client.
Detailed Description
The invention is further described below by means of specific examples, without restricting its scope to these.
Particle size and particle size distribution testing of the emulsion resin and ink was performed on a Malvern ZETASIZER 3000HAS particle sizer at a test temperature of 25 ℃.
The storage stability of the emulsion and the water-based ink means that the emulsion and the water-based ink stand for 18 days at the temperature of 60 ℃ and represent the storage stability of the emulsion and the water-based ink for more than 12 months without precipitation and delamination.
Gloss was measured according to GB/T13217.2-2009 using a 60 ℃ gloss meter.
The initial drying was carried out according to GB/T13217.5-2008.
VOCs detection is carried out according to YC/T207-2014 standard.
The printing effect of the aqueous ink was evaluated as follows: the aqueous single-color ink (red, yellow, blue, black and white) and the commercially available single-color ink are printed on coated paper by a KPP gravure proof press at a printing speed of 40m/min, dried at 50 ℃, and observed by naked eyes to obtain the leveling effect of the printed color block.
In the following examples, the resin A used was prepared as follows:
at room temperature, 100kg
Adding BT 20(DSM company) into a reaction kettle, stirring at the speed of 300-500rpm, heating to 70-80 ℃, dropwise adding 30kg of AMP-95(Dow company) aqueous solution within 30-50min, cooling the system to room temperature when the pH value of the resin solution reaches 7.5-9, and filtering and discharging by using a 500-mesh nylon bag to obtain resin A;
the AMP-95 aqueous solution is prepared by mixing AMP-95 and deionized water by equal weight.
In the following examples, resin B was used which was prepared as follows:
(1) at room temperature, 0.15kg AMP-95(Dow Corp.), 5kg n-butyl acrylate (Guangzhou, Inc.) monomer and 10kg deionized water were added to 85kg resin A, stirred at 600rpm and the temperature was raised; when the temperature was raised to 82 ℃, the stirring was adjusted to 200rpm, and 4.3kg of an aqueous solution of sodium persulfate (0.3kg of sodium persulfate dissolved in 4kg of deionized water) was added;
(2) after the reaction system has obvious blue light, 60kg of n-butyl acrylate (Guangzhou city intermediate chemical industry Co., Ltd.) monomer is dripped in 6 hours, then a mixed solution of 5kg of n-butyl acrylate (Guangzhou city intermediate chemical industry Co., Ltd.) monomer and 30kg of methyl methacrylate (Guangzhou city intermediate chemical industry Co., Ltd.) monomer is dripped in 1 hour, 14.5kg of sodium persulfate (Suzhou Hua navigation chemical industry Co., Ltd.) aqueous solution (2kg of sodium persulfate is dissolved in 12.5kg of deionized water) is dripped at the same time of starting dripping the monomer, and the dripping time of the sodium persulfate aqueous solution is controlled to be 7.5 hours, and the dripping is finished after 0.5 hour of dripping all the monomers;
(3) the reaction system is cooled to 65 ℃ after being stirred for 1 hour under heat preservation, aqueous solution of tert-butyl hydroperoxide (Shanghai Bai chemical Co., Ltd.) is added (0.08kg of tert-butyl hydroperoxide is dissolved in 2kg of deionized water), stirring is carried out for 20 minutes under heat preservation, aqueous solution of rongalite (Shanghai Feng chemical Co., Ltd.) is added (0.08kg of rongalite is dissolved in 2kg of deionized water), stirring is carried out for 20 minutes under heat preservation; then cooling to room temperature, and carrying out four-stage filtration on the emulsion after the reaction is finished through a 300-mesh nylon bag, a 2um aperture PP filter membrane, a 1um aperture PP filter membrane and a 0.45um aperture glass fiber filter membrane in sequence to obtain the resin B.
Example 1:
30kg of resin A, 14.87kg of deionized water and 0.08kg of resin A were mixed at room temperature
Foamex 810 (EVONIK) was sequentially added to a dispersion tank, stirred and mixed at 300rpm, then 20kg of 53:1 aurora red (Clariant) was added, stirred and mixed at 400rpm, then transferred to a horizontal sand mill (TBM-50, Tai Hai industries Ltd.) for grinding 6 times, and 35kg of resin B and 0.05kg of resin B were added before grinding 6 times
And (3) grinding the DF1760 (Demodex company) together until the grain diameter of the red ink reaches below 200nm, and sequentially filtering the red ink by a 100-mesh nylon bag, a 2-um-aperture PP filter membrane, a 1-um-aperture PP filter membrane and a 0.45-um-aperture glass fiber filter membrane to obtain the gravure printing water-based red ink for the coated paper.
Example 2:
30kg of resin A, 9.84kg of deionized water, 0.1kg of resin A were mixed at room temperature
Foamex 810(EVONIK Corp.) Add sequentiallyAdding into a dispersion kettle, stirring at 400rpm, mixing, adding 20kg of permanent yellow PY14 (Zhejiang lily group GmbH, Ltd.), stirring at 400rpm, mixing, transferring into a horizontal sand mill (TBM-50, Tai Jie (Shanghai) industries, Ltd.) for grinding for 6 times, adding 40kg of resin B and 0.06kg of resin B before grinding for 6 times
And (3) grinding the DF1760 (Demodex company) together until the particle size of the yellow ink reaches below 200nm, and sequentially filtering the yellow ink by a 100-mesh nylon bag, a 2-um-aperture PP filter membrane, a 1-um-aperture PP filter membrane and a 0.45-um-aperture glass fiber filter membrane to obtain the water-based yellow ink for the intaglio printing of the coated paper.
Example 3:
30kg of resin A, 14.84kg of deionized water, 0.1kg of resin A were mixed at room temperature
Foamex 810(EVONIK corporation) was added to a dispersion tank in sequence, mixed at 350rpm, then 20kg of BF435 (P.B.15: 3, Kyoto Lily group Co., Ltd.) was added, mixed at 400rpm, and then transferred to a horizontal sand mill (TBM-50, Tai Chi industries Co., Ltd.) to grind 5 times, and 35kg of resin B and 0.06kg of resin B were added before grinding 5 times
And (3) grinding the DF1760 (Demodex company) together until the particle size of the blue ink reaches below 200nm, and sequentially filtering the blue ink by a 100-mesh nylon bag, a 2-um-aperture PP filter membrane, a 1-um-aperture PP filter membrane and a 0.45-um-aperture glass fiber filter membrane to obtain the copper plate paper gravure printing water-based blue ink.
Example 4:
30kg of resin A, 9.82kg of deionized water, 0.1kg of resin A were mixed at room temperature
Foamex 810 (EVONIK) was added to the dispersion tank, stirred at 300rpm, mixed well and then added with 25kgSPECIAL BLACK 10(ORION corporation), mixed uniformly with stirring at 500rpm, transferred to a horizontal sand mill (TBM-50, Tai Jie (Shanghai) industries, Ltd.) for grinding 5 times, and added with 35kg of resin B and 0.08kg of resin B before grinding 5 times
And (3) grinding the DF1760 (Demodex company) together until the particle size of the black ink reaches below 200nm, and sequentially filtering the black ink by a 100-mesh nylon bag, a 2-um-aperture PP filter membrane, a 1-um-aperture PP filter membrane and a 0.45-um-aperture glass fiber filter membrane to obtain the gravure printing water-based black ink for the coated paper.
Example 5:
20kg of resin A, 4.84kg of deionized water, 0.08kg of resin A were mixed at room temperature
Foamex 810 (EVONIK) was added to a dispersion tank in sequence, stirred and mixed at 400rpm, then 55kg of R900 (DuPont) was added, stirred and mixed at 500rpm, then transferred to a horizontal sand mill (TBM-50, Taiyai (Shanghai) industries, Ltd.) for grinding 4 times, and 20kg of resin B and 0.08kg of resin B were added before grinding 4 times
And (3) grinding the DF1760 (Demodex company) together until the grain diameter of the white ink reaches below 250nm, and sequentially filtering the white ink by a 100-mesh nylon bag, a 2-um-aperture PP filter membrane, a 1-um-aperture PP filter membrane and a 0.45-um-aperture glass fiber filter membrane to obtain the water-based white ink for the intaglio printing of the coated paper.
TABLE 1 Experimental results of examples
Note: the gloss data for commercial water-based inks is shown in brackets in the 60 ℃ gloss column.
As can be seen from the data in Table 1, the particle size of the self-made emulsion resin is below 150 nm; the grain diameter of each color of ink is below 200nm, the grain diameter of the white ink is below 250nm, and the finer the grain diameter of the ink is, the more uniform the film is formed, the better the wetting leveling property is and the higher the glossiness is. The storage stability period of the emulsion and the ink exceeds 1 year. The ink has good initial dryness and up to standard VOCs emission.
As can be seen from the drawings 3-12 of the specification, the field leveling property of the commercial ink on the coated paper is obviously inferior to that of the product of the invention. The product is used for two client brands of coconut king and Hongtansan, and the performances of all aspects such as printing test and the like all meet the client requirements.
The above-described embodiments are intended to illustrate rather than to limit the invention, and any modifications and variations of the present invention are within the spirit of the invention and the scope of the claims.
Claims (5)
1. The gravure water-based ink for coated paper is characterized by comprising the following raw materials in parts by weight:
20-30 parts of resin A, 20-40 parts of resin B, 20-55 parts of pigment, 0.08-0.1 part of defoaming agent A, 0.05-0.08 part of defoaming agent B and 4.84-14.87 parts of deionized water;
the defoaming agent A is any one or a mixture of more than two of polysiloxane-polyether copolymer defoaming agents and organic silicon defoaming agents in any proportion;
the defoaming agent B is one or a mixture of more than two of a lower alcohol defoaming agent and an organic silicon defoaming agent in any proportion;
the resin A is modified alkali-soluble resin, and the preparation method comprises the following steps:
100 parts of aqueous alkali-soluble resin is added at room temperature
Adding BT 20 into a reaction kettle, stirring at the speed of 300 plus 500rpm, heating to 70-80 ℃, dropwise adding 30 parts of aqueous solution of pH buffer AMP-95 within 30-50min, cooling the system to room temperature, and filtering by using a 500-mesh nylon bagDischarging to obtain the resin A;
the 30 parts of pH buffer AMP-95 aqueous solution is prepared by mixing pH buffer AMP-95 and deionized water in equal weight;
the resin B is poly (methyl) acrylate emulsion resin, and the preparation method comprises the following steps:
at room temperature, 0.15 part of pH buffer AMP-95, 5 parts of n-butyl acrylate monomer and 10 parts of deionized water are added into 85 parts of resin A, the mixture is stirred at the speed of 600rpm and heated to 82 ℃, the stirring speed is adjusted to 200rpm, 4.3 parts of sodium persulfate aqueous solution is added, after the reaction system has obvious blue light, 60 parts of n-butyl acrylate monomer is dropwise added within 6h, then the mixture of 5 parts of n-butyl acrylate monomer and 30 parts of methyl methacrylate monomer is dropwise added within 1h, 14.5 parts of sodium persulfate aqueous solution is dropwise added while the dropwise addition of the monomer is started, and the dropwise addition time of the sodium persulfate aqueous solution is 7.5h, namely: controlling the monomer to be dripped after 0.5h after all the monomer is dripped, then keeping the temperature of a reaction system and stirring for 1h, cooling to 65 ℃, adding 2.08 parts of tert-butyl hydrogen peroxide aqueous solution, keeping the temperature and stirring for 20min, adding 2.08 parts of rongalite aqueous solution, keeping the temperature and stirring for 20min, cooling to room temperature, and performing four-stage filtration by a 300-mesh nylon bag, a 2-micron-aperture PP filter membrane, a 1-micron-aperture PP filter membrane and a 0.45-micron-aperture glass fiber filter membrane in sequence to obtain the resin B;
the 4.3 parts of sodium persulfate aqueous solution is obtained by dissolving 0.3 part of sodium persulfate in 4 parts of deionized water;
the 14.5 parts of sodium persulfate aqueous solution is prepared by dissolving 2 parts of sodium persulfate in 12.5 parts of deionized water;
the 2.08 parts of tert-butyl hydroperoxide aqueous solution is obtained by dissolving 0.08 part of tert-butyl hydroperoxide in 2 parts of deionized water;
the 2.08 parts of rongalite aqueous solution is obtained by dissolving 0.08 part of rongalite in 2 parts of deionized water.
2. The gravure water-based ink for coated papers as claimed in claim 1, wherein the defoaming agent A is a polysiloxane-polyether copolymer defoaming agent selected from the group consisting of
Foamex 810; the silicone defoaming agent is selected from BYK 024.
3. The gravure water-based ink for coated papers as claimed in claim 1, wherein the lower alcohol-based antifoaming agent in the antifoaming agent B is selected from the group consisting of
DF 1760、
DF 1492; the organic silicon defoaming agent is selected from Drewplus TS-4400, Drewplus T-4201 and Drewplus TS-4481.
4. The coated paper gravure water-based ink as claimed in claim 1, wherein the pigment is selected from 53:1 aurora red, permanent yellow PY14, BF435, SPECIAL BLACK 10 or R900.
5. The preparation method of the coated paper gravure water-based ink as claimed in claim 1, wherein the preparation method comprises the following steps:
at room temperature, sequentially adding 20-30 parts of resin A, 4.84-14.87 parts of deionized water and 0.08-0.1 part of defoamer A into a dispersion kettle, uniformly stirring and mixing at the speed of 400rpm of 300 plus materials, then adding 20-55 parts of pigment, uniformly stirring and mixing at the speed of 500rpm of 400 plus materials, transferring into a horizontal sand mill for grinding for 4-6 times, adding 20-40 parts of resin B and 0.05-0.08 part of defoamer B before the last grinding, grinding until the particle size of the pigment reaches below 250nm of 200 plus materials, and sequentially filtering through a 100-mesh nylon bag, a PP filter membrane with the aperture of 2 mu m, a PP filter membrane with the aperture of 1 mu m and a glass fiber filter membrane with the aperture of 0.45 mu m to obtain the waterborne ink for gravure printing of the copper plate paper.
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| CN104073058A (en) * | 2014-07-15 | 2014-10-01 | 揭东县富德印刷材料有限公司 | Method for plastic soft package water-based intaglio printing ink |
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