CN115584162B - Water-based ink for gravure printing of PVC edge banding strip and synthesis process thereof - Google Patents
Water-based ink for gravure printing of PVC edge banding strip and synthesis process thereof Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000007646 gravure printing Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000008569 process Effects 0.000 title claims abstract description 19
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 16
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 16
- 239000013530 defoamer Substances 0.000 claims abstract description 32
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 28
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229920000570 polyether Polymers 0.000 claims abstract description 28
- 239000002966 varnish Substances 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000012948 isocyanate Substances 0.000 claims abstract description 15
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 15
- 239000003755 preservative agent Substances 0.000 claims abstract description 15
- 230000002335 preservative effect Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract 5
- 238000003756 stirring Methods 0.000 claims description 67
- 239000008367 deionised water Substances 0.000 claims description 37
- 229910021641 deionized water Inorganic materials 0.000 claims description 37
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 claims description 24
- 239000004925 Acrylic resin Substances 0.000 claims description 23
- 229920000178 Acrylic resin Polymers 0.000 claims description 23
- 239000000839 emulsion Substances 0.000 claims description 23
- 238000002360 preparation method Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 18
- 239000011347 resin Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 17
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 15
- 239000003921 oil Substances 0.000 claims description 15
- 229920002635 polyurethane Polymers 0.000 claims description 15
- 239000004814 polyurethane Substances 0.000 claims description 15
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 13
- 239000002270 dispersing agent Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000003906 humectant Substances 0.000 claims description 13
- 229920005792 styrene-acrylic resin Polymers 0.000 claims description 13
- 239000004094 surface-active agent Substances 0.000 claims description 13
- RWNUSVWFHDHRCJ-UHFFFAOYSA-N 1-butoxypropan-2-ol Chemical compound CCCCOCC(C)O RWNUSVWFHDHRCJ-UHFFFAOYSA-N 0.000 claims description 10
- 229920005749 polyurethane resin Polymers 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 6
- XENVCRGQTABGKY-ZHACJKMWSA-N chlorohydrin Chemical compound CC#CC#CC#CC#C\C=C\C(Cl)CO XENVCRGQTABGKY-ZHACJKMWSA-N 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 238000007639 printing Methods 0.000 description 24
- 230000000694 effects Effects 0.000 description 13
- 235000019198 oils Nutrition 0.000 description 13
- 239000002518 antifoaming agent Substances 0.000 description 9
- 238000001514 detection method Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 239000004205 dimethyl polysiloxane Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- MGIYRDNGCNKGJU-UHFFFAOYSA-N isothiazolinone Chemical group O=C1C=CSN1 MGIYRDNGCNKGJU-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 4
- -1 polydimethylsiloxane Polymers 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 238000012827 research and development Methods 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 238000004042 decolorization Methods 0.000 description 3
- 239000007888 film coating Substances 0.000 description 3
- 238000009501 film coating Methods 0.000 description 3
- 239000004519 grease Substances 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 description 3
- 239000008158 vegetable oil Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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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
-
- 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
- C09D11/10—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
Abstract
The invention provides a synthesis process of water-based ink for gravure printing of a PVC edge banding strip; the synthesis process comprises the following steps: the raw materials adopted by the weight portion are as follows: 70-80 parts of varnish, 15-20 parts of color paste, 0.5-2 parts of polyether modified siloxane, 0.2-0.5 part of defoamer, 1-2 parts of flatting agent, 0.6-1 part of isocyanate, 0.1-0.3 part of preservative and 0.5-1 part of acid-base neutralizer. The prepared PVC edge banding gravure printing water-based ink has the advantages of good transferability, clear dots, good leveling property, strong adhesive force, strong scratch resistance and good adaptability to PVC materials.
Description
Technical Field
The invention relates to the field of intaglio printing, in particular to water-based ink for intaglio printing of PVC edge banding and a synthesis process thereof.
Background
The PVC edge banding strip is also an indispensable edge banding material on the plate furniture, the printing of the traditional decorative panel edge banding strip is gravure printing made of PVC material, the printing ink mainly takes solvent type ink as a main component, the oily ink is not environment-friendly and has heavy smell, and serious harm is brought to personnel safety, personnel health and the like. In the current society, the requirements of consumers on volatilization and residue of harmful substances are higher and higher, the traditional oily ink cannot adapt to the development trend of the industry, and the improvement and innovation of the water-based gravure PVC edge banding ink form an urgent requirement point of the industry.
With the increasing requirements of plate-type materials and furniture quality, the environment-friendly performance of the oily ink becomes a short plate of a link, and with the market demand, the PVC edge banding produced by printing with solvent-type ink has the defects of environmental protection, heavy smell, more harmful substance residues and the like; in recent years, PVC gravure water-based ink is gradually developed, but the existing gravure water-based ink is poor in performance and cannot meet the printing process and quality requirements, so that printed products have serious defects and defects, and compared with oily ink printed products, the effect gap is large, and the delivery requirements cannot be met.
The PVC edge banding water-based ink printing has relatively high requirements on the printing process and also has higher requirements on the performance and the requirements of the ink. The PVC edge banding is printed in the printing industry, so that the ink consumption is small, the requirement is high, and the PVC edge banding is relatively cool; the research and development interest of large ink enterprises is not raised, so that the market promotion of the PVC edge banding water-based ink is relatively slow; large enterprises are not interested, small enterprises are not technically, the performances of the commercially available water-based PVC edge banding ink are uneven, and the problems are more. Comprising the following steps: 1) The adhesive force of the existing water-based ink on the PVC edge banding is poor: after printing, the adhesive tape is torn and bent by using a 3M adhesive force test adhesive tape or is scraped by a hard object, so that the color is easy to fade and scratch is easy to occur; 2) Poor gloss: the existing pigment with the water-based ink applicable to the solubility has the defects that the color after printing is dull and not bright; 3) Dot out of definition: the existing water-based ink cannot clearly print pattern dots on the PVC edge banding, and the printed wood grain has poor definition and lacks stereoscopic impression; 4) And (3) field leveling difference: the existing water-based ink is adopted to print a single-color full-page real ground surface on the PVC edge banding, and the full-page printing cannot be realized due to the phenomena of orange peel, shrinkage cavity and the like; 5) Poor resolubility and transferability: the existing water-based ink for PVC edge banding printing is poor in resolubility and transferability, ink is easy to remain in printing plate network holes, and the printing plate network holes are easy to be blocked after drying.
According to the technical problems, the research and development team of the company performs key research and development on the water-based ink for the gravure printing of the PVC edge banding, and after many years of research and development, a new formula and a new process are developed to solve the problems.
Disclosure of Invention
In order to solve the problems, the invention provides water-based ink for gravure printing of PVC edge banding and a preparation method thereof, and the following aims are achieved: the PVC edge banding gravure printing water-based ink prepared by the invention has good transferability, clear dots, good leveling property, strong adhesive force, strong scratch resistance and good adaptability to PVC materials.
In order to achieve the above object, the present invention adopts the following technical scheme:
a synthesis process of water-based ink for gravure printing of PVC edge banding strips comprises the following steps:
step (one), preparing acrylic resin liquid:
1. the preparation method comprises the following steps of: 0.4-0.6 part of ammonia water, 16-18 parts of deionized water and 11-13 parts of styrene acrylic resin. The ammonia water: the mass percentage is 28%; the styrene acrylic resin comprises the following components: the molecular weight is 8500;
2. mixing 28 mass percent of ammonia water and deionized water, stirring at a speed of 300r/min, preparing a mixture A, and heating to 75 ℃;
3. slowly adding the solid styrene acrylic resin into the mixture A, stirring at 600r/min for 60 minutes, and cooling to 30 ℃ to obtain an acrylic resin liquid for later use. The acrylic resin obtained: the viscosity was measured with a Czochralski 4# cup and ranged from 50 "-60".
Step two, preparing a chloroether emulsion:
1. the preparation method comprises the following steps of: 25-33 parts of chloroether resin, 7-11 parts of propylene glycol monobutyl ether, 0.6-13 parts of sodium dodecyl sulfate and 60-65 parts of deionized water;
2. mixing the chlorohydrin resin and propylene glycol monobutyl ether, uniformly stirring at the speed of 300+/-50 r/min, heating to 82-88 ℃ and preserving heat for 1 hour to obtain a mixture B;
3. adding sodium dodecyl sulfate into the mixture B, dropwise adding, stirring for 10+/-2 min, and cooling to 48-52 ℃;
4. regulating the stirring speed to 600+/-50 r/min, dropwise adding deionized water, stirring for 28-35min after the dripping is finished, and discharging for later use; to obtain the chloroether emulsion.
Preparing modified polyurethane:
1. adding polyurethane resin into a reaction kettle, dripping an acid-base neutralizer, adjusting the pH value to 8.5, and heating to 80 ℃ to obtain base resin;
2. slowly adding the acrylic resin liquid prepared in the step (one) into the base resin, stirring for 30min, and cooling to 30 ℃ to obtain the modified polyurethane.
The mass ratio of the polyurethane resin to the acrylic resin liquid is 3-5:3-5.
Step four, preparing ink-regulating oil
1. Mixing the chloroether emulsion obtained in the step (II), the modified polyurethane obtained in the step (III), a surfactant, a defoaming agent and deionized water according to the following mass parts: 18-22 parts of chloroether emulsion, 20-28 parts of modified polyurethane, 0.2-0.7 part of surfactant, 0.1-0.4 part of defoamer and 16-20 parts of deionized water;
the surfactant comprises the following components: is an ultra-high molecular weight polydimethylsiloxane dispersion; the activity is 80%;
the defoamer is as follows: a silicone emulsion;
2. dispersing in a dispersing machine at a stirring speed of 300-400r/min for 30 minutes to obtain varnish for later use; the obtained varnish: viscosity was measured using a firewood # 4 cup and was between 35 "-40"; the pH value is measured by a pH tester and is 8.5-8.8PH.
Step (five) preparing color paste
1. The preparation method comprises the following steps of: 8-12 parts of dispersing agent, 1-3 parts of polyether modified siloxane, 0.1-0.4 part of defoamer, 30-40 parts of deionized water, 4-7 parts of humectant, 8-12 parts of ink regulating oil and 45-53 parts of toner;
the model of the dispersing agent is KYC-9366; the model of the polyether modified siloxane is KYC-648; the model of the defoamer is Tego-airex902W; the model number of the humectant is 112-34-5; the toner is carbon black;
2. sequentially adding a dispersing agent, polyether modified siloxane, a defoaming agent, deionized water and a humectant into a dispersing machine, adding toner, dispersing for 60 minutes at a stirring speed of 600r/min in the dispersing machine, and then transferring the materials into a grinder to be ground to a particle size of 8 mu m to obtain color paste.
Step six, preparing water-based ink for gravure printing of PVC edge banding
1. The preparation method comprises the following steps of: 70-80 parts of varnish obtained in the step (IV), 15-20 parts of color paste obtained in the step (V), 0.5-2 parts of polyether modified siloxane, 0.2-0.5 part of defoamer, 1-2 parts of flatting agent, 0.6-1 part of isocyanate, 0.1-0.3 part of preservative and 0.5-1 part of acid-base neutralizer;
the model of the polyether modified siloxane is KYC-641; the model of the leveling agent is KYC-616; the model of isocyanate is YL-W6880E; the model of the defoamer is Tego-airex902W; the preservative is isothiazolinone; the acid-base neutralizer is ammonia water with the mass percentage of 28%;
2. putting the ink-regulating oil into a stirring cylinder, and starting a dispersing machine at the speed of 300+/-50 r/min;
3. adding polyether modified siloxane and a defoaming agent into a dispersing machine, and continuously stirring;
4. putting the color paste into a dispersing machine, stirring for 30+/-5 min at speed of 300+/-50 r/min;
5. adding a leveling agent, isocyanate, a preservative and an acid-base neutralizer into a dispersing machine; dispersing for 10+/-2 min at the stirring speed of 150-200r/min to prepare the water-based ink for the gravure printing of the PVC edge banding.
The beneficial effects are that: the PVC edge banding gravure printing water-based ink has good transferability, clear dots, good leveling property, strong adhesive force, strong scratch resistance and good adaptability to PVC materials.
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 Synthesis Process of Water-based ink for gravure printing of PVC edge banding
A synthesis process of water-based ink for gravure printing of PVC edge banding strips comprises the following steps:
step (one), preparing acrylic resin liquid:
1. the preparation method comprises the following steps of: ammonia water 0.5 parts, deionized water 17.5 parts and styrene acrylic resin 12 parts. The ammonia water: the mass percentage is 28%; the styrene acrylic resin comprises the following components: the molecular weight is 8500;
2. mixing 28 mass percent of ammonia water and deionized water, stirring at a speed of 300r/min, preparing a mixture A, and heating to 75 ℃;
3. slowly adding the solid styrene acrylic resin into the mixture A, stirring at 600r/min for 60 minutes, and cooling to 30 ℃ to obtain an acrylic resin liquid for later use. The acrylic resin obtained: the viscosity was measured with a firewood 4# cup and was 60 ".
Step two, preparing a chloroether emulsion:
1. the preparation method comprises the following steps of: 30 parts of chloroether resin, 9 parts of propylene glycol monobutyl ether, 1 part of sodium dodecyl sulfate and 60 parts of deionized water;
2. mixing the chlorohydrin resin and propylene glycol monobutyl ether, uniformly stirring at the speed of 300r/min, heating to 85 ℃ and preserving heat for 1 hour to obtain a mixture B;
3. adding sodium dodecyl sulfate into the mixture B, dropwise adding the sodium dodecyl sulfate, stirring for 10min, and cooling to 50 ℃;
4. regulating the stirring speed to 600r/min, dropwise adding deionized water, stirring for 30min after the adding, and discharging for later use; to obtain the chloroether emulsion.
Step (III) preparing ink-regulating oil
1. Mixing the acrylic resin liquid obtained in the step (I), the chloroether emulsion obtained in the step (II), polyurethane resin, a surfactant, a defoaming agent and deionized water according to the following mass parts: 15 parts of acrylic resin, 10 parts of chloroether emulsion, 15 parts of polyurethane resin, 0.5 part of surfactant, 0.2 part of defoamer and 10 parts of deionized water;
the surfactant comprises the following components: is an ultra-high molecular weight polydimethylsiloxane dispersion; the activity is 80%;
the defoamer is as follows: a silicone emulsion;
2. dispersing in a dispersing machine at a stirring speed of 400r/min for 30 minutes to obtain varnish for later use; the obtained varnish: viscosity was measured using a firewood # 4 cup and was at 35 "; the pH was measured with a pH tester and was 8.5.
Step four, preparing color paste
1. The preparation method comprises the following steps of: 10 parts of dispersing agent, 2 parts of polyether modified siloxane, 0.2 part of defoamer, 35 parts of deionized water, 5 parts of humectant, 10 parts of varnish prepared in the step (III) and 50 parts of toner;
the model of the dispersing agent is KYC-9366; the model of the polyether modified siloxane is KYC-648; the model of the defoamer is Tego-airex902W; the model number of the humectant is 112-34-5; the toner is carbon black;
2. adding the dispersing agent, polyether modified siloxane, the defoamer, deionized water, the humectant and the ink-regulating oil into a dispersing machine in sequence, adding the toner, dispersing in the dispersing machine for 60 minutes at the stirring speed of 600r/min, and then transferring the materials into a grinder to be ground to the particle size of 8 mu m to obtain the color paste.
Step (fifth), preparing water-based ink for gravure printing of PVC edge banding
1. The preparation method comprises the following steps of: 70 parts of varnish obtained in the step (III), 15 parts of color paste obtained in the step (fourth), 0.5 part of polyether modified siloxane, 0.2 part of defoamer, 1 part of flatting agent, 1 part of isocyanate, 0.1 part of preservative and 0.8 part of acid-base neutralizer;
the model of the polyether modified siloxane is KYC-641; the model of the leveling agent is KYC-616; the model of isocyanate is YL-W6880E; the model of the defoamer is Tego-airex902W; the preservative is isothiazolinone; the acid-base neutralizer is ammonia water with the mass percentage of 28%;
2. putting the ink-regulating oil into a stirring cylinder, and starting a dispersing machine at the speed of 300r/min;
3. adding polyether modified siloxane and a defoaming agent into a dispersing machine, and continuously stirring;
4. putting the color paste into a dispersing machine, stirring at the stirring speed of 300r/min, and stirring for 30min;
5. adding a leveling agent, isocyanate, a preservative and an acid-base neutralizer into a dispersing machine; dispersing for 10min at a stirring speed of 200r/min to obtain the water-based ink for gravure printing of the PVC edge banding.
The performance of the water-based ink for gravure printing of the PVC edge banding is detected, and the detection results are shown in Table 1:
TABLE 1
As can be seen from table 1, the PVC banding gravure water based ink prepared in example 1: the ink fineness was 8 μm, the tinting strength was 99Abs, the viscosity was 23 ", the initial drying speed was 5", and the adhesion: a small part falls off after being torn by a 3M-600 adhesive tape for 1H, and no falling off occurs after 24H; grease resistance: soaking in vegetable oil for 30min without decolorization; the ageing resistance is good; no sediment and no bad smell after storage for one week under the cycle condition of-20 ℃ to 50 ℃; the film coating has no shrinkage cavity; surface tension 44mN/m; antiwear 25r.
The printing ink prepared by the method is used for carrying out PVC edge banding gravure printing, and a printed sample is detected. Specific analysis was performed using 30-60 magnification magnifier to observe 10%, 30%, 50% and 80% dot effects, and the results are shown in table 2:
TABLE 2
From table 2, it can be seen that 50% of the dots have the effect of: the effect of lost points, no diffusion, continuous points and hollowness and 80 percent of net points: has diffusion and connection points, and has no lost points and hollowness.
The printing ink prepared by the method is subjected to PVC edge banding gravure printing, and the printed sample shows no shrinkage cavity but shows orange peel patterns on the printed solid block; the color fastness of the PVC edge banding after printing is detected, the PVC edge banding is slightly fallen off after 1H, no falling off is detected after 24H, and the color fastness can meet the requirement.
Example 2 Synthesis process of aqueous ink for gravure printing of PVC edge banding
A synthesis process of water-based ink for gravure printing of PVC edge banding strips comprises the following steps:
step (one), preparing acrylic resin liquid:
1. the preparation method comprises the following steps of: ammonia water 0.5 parts, deionized water 17.5 parts and styrene acrylic resin 12 parts. The ammonia water: the mass percentage is 28%; the styrene acrylic resin comprises the following components: the molecular weight is 8500;
2. mixing 28 mass percent of ammonia water and deionized water, stirring at a speed of 300r/min, preparing a mixture A, and heating to 75 ℃;
3. slowly adding the solid styrene acrylic resin into the mixture A, stirring at 600r/min for 60 minutes, and cooling to 30 ℃ to obtain an acrylic resin liquid for later use. The acrylic resin obtained: the viscosity was measured with a firewood 4# cup and was 60 ".
Step two, preparing a chloroether emulsion:
1. the preparation method comprises the following steps of: 30 parts of chloroether resin, 9 parts of propylene glycol monobutyl ether, 1 part of sodium dodecyl sulfate and 60 parts of deionized water;
2. mixing the chlorohydrin resin and propylene glycol monobutyl ether, uniformly stirring at the speed of 300r/min, heating to 85 ℃ and preserving heat for 1 hour to obtain a mixture B;
3. adding sodium dodecyl sulfate into the mixture B, dropwise adding the sodium dodecyl sulfate, stirring for 10min, and cooling to 50 ℃;
4. regulating the stirring speed to 600r/min, dropwise adding deionized water, stirring for 30min after the adding, and discharging for later use; to obtain the chloroether emulsion.
Preparing modified polyurethane:
1. adding polyurethane resin into a reaction kettle, dripping an acid-base neutralizer, adjusting the pH value to 8.5, and heating to 80 ℃ to obtain base resin;
2. slowly adding the acrylic resin liquid prepared in the step (one) into the base resin, stirring for 30min, and cooling to 30 ℃ to obtain the modified polyurethane.
The mass ratio of the polyurethane resin to the acrylic resin liquid is 3:5.
step four, preparing ink-regulating oil
1. Mixing the chloroether emulsion obtained in the step (II), the modified polyurethane obtained in the step (III), a surfactant, a defoaming agent and deionized water according to the following mass parts: 10 parts of chloroether emulsion, 30 parts of modified polyurethane, 0.5 part of surfactant, 0.2 part of defoamer and 10 parts of deionized water;
the surfactant comprises the following components: is an ultra-high molecular weight polydimethylsiloxane dispersion; the activity is 80%;
the defoamer is as follows: a silicone emulsion;
2. dispersing in a dispersing machine at a stirring speed of 300r/min for 30 minutes to obtain varnish for later use; the obtained varnish: viscosity was measured using a firewood # 4 cup and was at 35 "; the pH was measured with a pH tester and was 8.5.
Step (five) preparing color paste
1. The preparation method comprises the following steps of: 10 parts of dispersing agent, 2 parts of polyether modified siloxane, 0.2 part of defoamer, 35 parts of deionized water, 5 parts of humectant, 10 parts of varnish prepared in the step (IV) and 50 parts of toner;
the model of the dispersing agent is KYC-9366; the model of the polyether modified siloxane is KYC-648; the model of the defoamer is Tego-airex902W; the model number of the humectant is 112-34-5; the toner is carbon black;
2. adding the dispersing agent, polyether modified siloxane, the defoamer, deionized water, the humectant and the ink-regulating oil into a dispersing machine in sequence, adding the toner, dispersing in the dispersing machine for 60 minutes at the stirring speed of 600r/min, and then transferring the materials into a grinder to be ground to the particle size of 8 mu m to obtain the color paste.
Step six, preparing water-based ink for gravure printing of PVC edge banding
1. The preparation method comprises the following steps of: 75 parts of ink-transfer oil obtained in the step (IV), 16 parts of color paste obtained in the step (V), 0.7 part of polyether modified siloxane, 0.2 part of defoamer, 2 parts of flatting agent, 0.6 part of isocyanate, 0.1 part of preservative and 0.6 part of acid-base neutralizer;
the model of the polyether modified siloxane is KYC-641; the model of the leveling agent is KYC-616; the model of isocyanate is YL-W6880E; the model of the defoamer is Tego-airex902W; the preservative is isothiazolinone; the acid-base neutralizer is ammonia water with the mass percentage of 28%;
2. putting the ink-regulating oil into a stirring cylinder, and starting a dispersing machine at the speed of 300r/min;
3. adding polyether modified siloxane and a defoaming agent into a dispersing machine, and continuously stirring;
4. putting the color paste into a dispersing machine, stirring at the stirring speed of 300r/min, and stirring for 30min;
5. adding a leveling agent, isocyanate, a preservative and an acid-base neutralizer into a dispersing machine; dispersing for 10min at a stirring speed of 180r/min to obtain the water-based ink for gravure printing of the PVC edge banding.
The performance of the water-based ink for gravure printing of the PVC edge banding is detected, and the detection results are shown in Table 3:
TABLE 3 Table 3
As can be seen from table 3, the PVC banding gravure water based ink prepared in example 2: the ink fineness was 8 μm, the tinting strength was 101Abs, the viscosity was 23 ", the tack-free speed was 4", and the adhesion: tear with 3M-600 tape: no falling off occurs within 1-24 h; grease resistance: soaking in vegetable oil for 30min without decolorization; the ageing resistance is good; storing for one week at the cycle condition of-20 ℃ to 50 ℃, and having no sediment and no bad smell; the film coating has no shrinkage cavity; surface tension 40mN/m; antiwear 28r.
The printing ink prepared by the method is used for carrying out PVC edge banding gravure printing, and a printed sample is detected. Specific analysis was performed using 30-60 magnification magnifier to observe 10%, 30%, 50% and 80% dot effects, and the results are shown in table 4:
TABLE 4 Table 4
From table 4, it can be seen that 50% of the dot effect in the ink printed sample: the device has the advantages of lost points, hollowness, no diffusion and connection points; effect of 80% dots: there are no lost points, diffusion and connecting points, and there is a hollow.
The ink prepared by the method is subjected to PVC edge banding gravure printing, and no shrinkage cavity exists and no orange peel is generated from the result shown by the printed sample; the color fastness of the PVC edge banding after detection printing is good, no falling off occurs in 1 hour, and the color fastness can meet the requirement. But slightly less transferable.
Example 3 Synthesis process of aqueous ink for gravure printing of PVC edge banding
A synthesis process of water-based ink for gravure printing of PVC edge banding strips comprises the following steps:
step (one), preparing acrylic resin liquid:
1. the preparation method comprises the following steps of: ammonia water 0.5 parts, deionized water 17.5 parts and styrene acrylic resin 12 parts. The ammonia water: the mass percentage is 28%; the styrene acrylic resin comprises the following components: the molecular weight is 8500;
2. mixing 28 mass percent of ammonia water and deionized water, stirring at a speed of 300r/min, preparing a mixture A, and heating to 75 ℃;
3. slowly adding the solid styrene acrylic resin into the mixture A, stirring at 600r/min for 60 minutes, and cooling to 30 ℃ to obtain an acrylic resin liquid for later use. The acrylic resin obtained: the viscosity was measured with a firewood 4# cup and was 55 ".
Step two, preparing a chloroether emulsion:
1. the preparation method comprises the following steps of: 30 parts of chloroether resin, 9 parts of propylene glycol monobutyl ether, 1 part of sodium dodecyl sulfate and 60 parts of deionized water;
2. mixing the chlorohydrin resin and propylene glycol monobutyl ether, uniformly stirring at the speed of 300r/min, heating to 85 ℃ and preserving heat for 1 hour to obtain a mixture B;
3. adding sodium dodecyl sulfate into the mixture B, dropwise adding the sodium dodecyl sulfate, stirring for 10min, and cooling to 50 ℃;
4. regulating the stirring speed to 600r/min, dropwise adding deionized water, stirring for 30min after the adding, and discharging for later use; to obtain the chloroether emulsion.
Preparing modified polyurethane:
1. adding polyurethane resin into a reaction kettle, dripping an acid-base neutralizer, adjusting the pH value to 8.5, and heating to 80 ℃ to obtain base resin;
2. slowly adding the acrylic resin liquid prepared in the step (one) into the base resin, stirring for 30min, and cooling to 30 ℃ to obtain the modified polyurethane.
The mass ratio of the polyurethane resin to the acrylic resin liquid is 3:4.
step four, preparing ink-regulating oil
1. Mixing the chloroether emulsion obtained in the step (II), the modified polyurethane obtained in the step (III), a surfactant, a defoaming agent and deionized water according to the following mass parts: 20 parts of chloroether emulsion, 25 parts of modified polyurethane, 0.5 part of surfactant, 0.2 part of defoamer and 18 parts of deionized water;
the surfactant comprises the following components: is an ultra-high molecular weight polydimethylsiloxane dispersion; the activity is 80%;
the defoamer is as follows: a silicone emulsion;
2. dispersing in a dispersing machine at a stirring speed of 400r/min for 30 minutes to obtain varnish for later use; the obtained varnish: viscosity was measured using a firewood # 4 cup, viscosity at 40 "; the pH was measured with a pH tester and was 8.8.
Step (five) preparing color paste
1. The preparation method comprises the following steps of: 10 parts of dispersing agent, 2 parts of polyether modified siloxane, 0.2 part of defoamer, 35 parts of deionized water, 5 parts of humectant, 10 parts of varnish prepared in the step (IV) and 50 parts of toner;
the model of the dispersing agent is KYC-9366; the model of the polyether modified siloxane is KYC-648; the model of the defoamer is Tego-airex902W; the model number of the humectant is 112-34-5; the toner is carbon black;
2. adding the dispersing agent, polyether modified siloxane, the defoamer, deionized water, the humectant and the ink-regulating oil into a dispersing machine in sequence, adding the toner, dispersing in the dispersing machine for 60 minutes at the stirring speed of 600r/min, and then transferring the materials into a grinder to be ground to the particle size of 8 mu m to obtain the color paste.
Step six, preparing water-based ink for gravure printing of PVC edge banding
1. The preparation method comprises the following steps of: 80 parts of varnish obtained in the step (IV), 20 parts of color paste obtained in the step (V), 2 parts of polyether modified siloxane, 0.5 part of defoamer, 2 parts of flatting agent, 0.8 part of isocyanate, 0.3 part of preservative and 1 part of acid-base neutralizer;
the model of the polyether modified siloxane is KYC-641; the model of the leveling agent is KYC-616; the model of isocyanate is YL-W6880E; the model of the defoamer is Tego-airex902W; the preservative is isothiazolinone; the acid-base neutralizer is ammonia water with the mass percentage of 28%;
2. putting the ink-regulating oil into a stirring cylinder, and starting a dispersing machine at the speed of 300r/min;
3. adding polyether modified siloxane and a defoaming agent into a dispersing machine, and continuously stirring;
4. putting the color paste into a dispersing machine, stirring at the stirring speed of 300r/min, and stirring for 30min;
5. adding a leveling agent, isocyanate, a preservative and an acid-base neutralizer into a dispersing machine; dispersing for 10min at a stirring speed of 200r/min to obtain the water-based ink for gravure printing of the PVC edge banding.
The performance of the water-based ink for gravure printing of the PVC edge banding is detected, and the detection results are shown in Table 5:
TABLE 5
As can be seen from table 5, the PVC banding gravure water based ink prepared in example 3: the ink fineness was 8 μm, the tinting strength was 100Abs, the viscosity was 24 ", the initial drying speed was 4", and the adhesion: tear with 3M-600 tape: no falling off occurs within 1-24 h; grease resistance: soaking in vegetable oil for 30min without decolorization; the ageing resistance is good; no sediment and no bad smell after storage for one week under the cycle condition of-20 ℃ to 50 ℃; the film coating has no shrinkage cavity; surface tension 38mN/m; antiwear 30r.
The printing ink prepared by the method is used for carrying out PVC edge banding gravure printing, and a printed sample is detected. The dot effects of 10%, 30%, 50% and 80% were specifically analyzed by using a 30-60-fold magnifying glass, and the results are shown in table 6;
TABLE 6
From table 6, from the dot effect in the ink printed samples, a detailed view of the specific analysis was made using 30-60 times magnification lens for 10%, 30%, 50% and 80% of the dots: 10%, 30%, 50%, 80% of the net is normal; indicating that the transfer and drying properties of the ink are optimal.
The ink prepared by the method is subjected to PVC edge banding gravure printing, and no shrinkage cavity exists and no orange peel is generated from the result shown by the printed sample; the color fastness of the PVC edge banding after detection printing is good, no falling off occurs in 1 hour, and the color fastness can meet the requirement. The transferability and drying property are also preferable.
Description of printing dots the size of a printing dot is determined by the coverage of the dot, also called the inking rate. The dot coverage, which is the percentage of the area occupied by dots per unit area, is also called the dot percentage. For example, a dot with a coverage rate of 10% is called a "one dot" or a "10% dot", a dot with a coverage rate of 50% is called a "five-dot" or a "50% dot", a dot with a coverage rate of 80% is called an "eight-dot" or a "80% dot", and a dot with a coverage rate of 0% is called a "net" and a dot with a coverage rate of 100% is called a "field". Tone of prints is generally divided into three levels: bright, medium, dark. The screen dot coverage rate of the bright-tuning part is about 10-30%; the screen dot coverage rate of the middle tone part is about 40% -60%; the dark tone part is 70% -90%.
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 (4)
1. A synthesis process of water-based ink for gravure printing of PVC edge banding strips is characterized by comprising the following steps: the raw materials adopted by the weight portion are as follows: 70-80 parts of varnish, 15-20 parts of color paste, 0.5-2 parts of polyether modified siloxane KYC-641, 0.2-0.5 part of defoamer, 1-2 parts of flatting agent, 0.6-1 part of isocyanate, 0.1-0.3 part of preservative and 0.5-1 part of acid-base neutralizer;
the ink-transfer oil is prepared by mixing the following raw material components in parts by weight: 18-22 parts of chloroether emulsion, 20-28 parts of modified polyurethane, 0.2-0.7 part of surfactant, 0.1-0.4 part of defoamer and 16-20 parts of deionized water;
the preparation of the chloroether emulsion adopts the following materials in proportion: 25-33 parts of chloroether resin, 7-11 parts of propylene glycol monobutyl ether, 0.6-13 parts of sodium dodecyl sulfate and 60-65 parts of deionized water;
the preparation method of the modified polyurethane comprises the following steps: adding polyurethane resin into a reaction kettle, dripping an acid-base neutralizer, adjusting the pH to 8.4-8.6, and heating to 78-85 ℃ to obtain base resin; adding the acrylic resin liquid into the base resin, stirring for 30min, and cooling to 30 ℃ to obtain modified polyurethane; the mass ratio of the polyurethane resin to the acrylic resin liquid is 3-5:3-5; the acrylic resin liquid: the raw materials adopted by the weight portion are as follows: 0.4-0.6 part of ammonia water, 16-18 parts of deionized water and 11-13 parts of styrene acrylic resin;
the color paste is prepared by mixing the following raw material components in parts by weight: 8-12 parts of dispersing agent, 1-3 parts of polyether modified siloxane KYC-648, 0.1-0.4 part of defoamer, 30-40 parts of deionized water, 4-7 parts of humectant, 8-12 parts of ink varnish and 45-53 parts of toner.
2. The synthesis process of the water-based ink for gravure printing of the PVC edge banding strip, which is characterized by comprising the following steps of: the method comprises the following steps: putting the ink-regulating oil into a stirring cylinder, and starting a dispersing machine at the speed of 300+/-50 r/min; polyether modified siloxane and defoamer are added into a dispersing machine and continuously stirred.
3. The synthesis process of the water-based ink for gravure printing of the PVC edge banding strip, which is characterized by comprising the following steps of: the method also comprises the following steps: putting the color paste into a dispersing machine, stirring at the stirring speed of 300+/-50 r/min, and stirring for 30+/-5 min; adding a leveling agent, isocyanate, a preservative and an acid-base neutralizer into a dispersing machine; dispersing for 10+ -2 min at stirring speed of 150-200 r/min.
4. The synthesis process of the water-based ink for gravure printing of the PVC edge banding strip, which is characterized by comprising the following steps of:
the preparation of the chloroether emulsion comprises the following steps: mixing the chlorohydrin resin and propylene glycol monobutyl ether, uniformly stirring at the speed of 300+/-50 r/min, heating to 82-88 ℃ and preserving heat for 1 hour to obtain a mixture; adding sodium dodecyl sulfate into the mixture, dropwise adding, stirring for 10+/-2 min, and cooling to 48-52 ℃; regulating the stirring speed to 600+/-50 r/min, dropwise adding deionized water, and stirring for 28-35min after the dripping is finished.
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