CN116200070A - Water-based LED (light-emitting diode) cured touch ink for printing and packaging field and preparation method thereof - Google Patents
Water-based LED (light-emitting diode) cured touch ink for printing and packaging field and preparation method thereof Download PDFInfo
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- CN116200070A CN116200070A CN202211613468.9A CN202211613468A CN116200070A CN 116200070 A CN116200070 A CN 116200070A CN 202211613468 A CN202211613468 A CN 202211613468A CN 116200070 A CN116200070 A CN 116200070A
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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
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
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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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Abstract
The invention discloses water-based LED curing touch ink for the field of printing and packaging, which is characterized by comprising the following components in parts by weight: 70-90 parts of film forming resin; 1-10 parts of a diluent; 0.5-1 part of photoinitiator; 5-10 parts of auxiliary agent; the film-forming resin is a mixture of aqueous polyurethane acrylic resin, matte powder and deionized water; the auxiliary agent is one or more of wax emulsion, silicone oil, wetting agent or defoamer. The cured touch ink can be quickly dried under the action of hot air and can be quickly cured under the irradiation of an LED, and a coating with strong soft touch, scratch resistance and high adhesive force can be obtained under the condition of high-speed printing by the technology.
Description
Technical Field
The invention relates to the field of preparation of solidified touch ink, in particular to water-based LED solidified touch ink for the field of printing and packaging and a preparation method thereof.
Background
1. The tactile inks currently used in the printing industry are mostly solvent-based inks or water-based inks, which contain a large amount of solvents and have a large odor. The water-based LED curing touch ink has low odor by using water as a diluent, and almost no VOCs completely meet the environmental protection requirement of limiting the operation in the printing process.
2. Existing solvent-based or water-based tactile inks are generally subject to surface scratch resistance due to the slow cure rate. The water-based LED curing touch ink can be suitable for rapid printing and curing of flexographic plates and intaglio plates, and has the advantages of abrasion resistance and scratch resistance on the surface after complete curing.
3. Existing solvent-based or water-based tactile inks require the addition of solvents and cannot meet the requirement that one product be printed on both a flexo and a gravure printing press simultaneously, so that one ink can meet different printing modes.
The cured touch ink can be quickly dried under the action of hot air and can be quickly cured under the irradiation of an LED, and a coating with strong soft touch, scratch resistance and high adhesive force can be obtained under the condition of high-speed printing by the technology.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide an aqueous-LED curable tactile ink for use in the field of printed packaging.
In order to achieve the purpose of the invention, the technical scheme adopted is as follows:
the water-based LED curing touch ink for the field of printing and packaging comprises the following components in parts by weight:
70-90 parts of film forming resin;
1-10 parts of a diluent;
0.5-1 part of photoinitiator;
5-10 parts of auxiliary agent;
the film-forming resin is a mixture of aqueous polyurethane acrylic resin, matte powder and deionized water;
the auxiliary agent is one or more of wax emulsion, silicone oil, wetting agent or defoamer.
In a preferred embodiment of the present invention, the diluent is deionized water.
In a preferred embodiment of the invention, the film-forming resin is formed by mixing the following components in parts by weight:
60-90 parts of aqueous polyurethane acrylic resin, 8-10 parts of matte powder and 5-10 parts of deionized water.
In a preferred embodiment of the invention, the proportion of each component in the auxiliary agent in the water-based LED curing touch ink used in the printing packaging field is 5-9% of wax emulsion;
0.1% -0.5% of silicone oil;
1% -3% of wetting agent;
0.1 to 0.2 percent of defoaming agent.
In a preferred embodiment of the present invention, the aqueous-LED curable tactile ink for use in the field of printed packaging has a viscosity of: zahn3# cup for 20-55 seconds; the pH value is 7.5-8.5.
A preparation method of water-based LED curing touch ink for the field of printing and packaging comprises the following steps:
adding the film-forming resin into a mixed solvent of a diluent and a photoinitiator which are stirred at a high speed until the film-forming resin is completely dispersed, and adding the preparation and uniformly stirring to obtain a semi-finished product;
and (3) putting the semi-finished product into a dispersing machine, regulating the viscosity to 20-55 seconds plus or minus 5 seconds of Zahn3# cup by using a diluent, and regulating the pH value to 8.0 plus or minus 0.5 by using ammonia water to obtain the LED water-based gloss oil finished product.
In a preferred embodiment of the invention, the high-speed stirring is carried out at a speed of 800-100 rpm, the secondary stirring speed after adding the auxiliary agent is 500-800 rpm, and the stirring time is 25-30 minutes.
In a preferred embodiment of the present invention, the high speed stirring speed is not higher than 500 rpm, the temperature is not higher than 50 ℃, and the stirring time is 30 minutes. Preferably 20-30 ℃.
The invention has the beneficial effects that:
the cured touch ink can be quickly dried under the action of hot air and can be quickly cured under the irradiation of an LED, and a coating with strong soft touch, scratch resistance and high adhesive force can be obtained under the condition of high-speed printing by the technology.
Detailed Description
The invention provides water-based LED (light-emitting diode) cured touch matt printing ink which comprises the following components in percentage by weight: 70-90% of film forming resin, 0.5-1% of photoinitiator, 5-10% of auxiliary agent and 1-10% of diluent, wherein the sum of the weight percentages of the components is 100%, and the auxiliary agent is a mixture of wax emulsion, silicone oil, wetting agent and defoamer.
Wherein, the film-forming resin comprises the following components: 70-90 parts of aqueous polyurethane acrylic ester, 8-10 parts of matte powder and 5-10 parts of deionized water. The aqueous polyurethane acrylate resin has good hand feeling, and has the feeling of fluff when being touched by hands after film formation, so the aqueous polyurethane acrylate resin is also called as touch resin, and is provided by Shenzhen Xin New Material Co., shanghai vast New Material technology Co., shanghai Gao New Material technology Co., shanghai Gao New Material technology Co., and the like. The matting powder may be silica.
The photoinitiator is one or a combination of bis (2, 4, 6-trimethylbenzoyl) phenylphosphine oxide (819 DW), 2-hydroxy-2 methyl-1-phenyl-1-acetone (1173) and 1-hydroxy phenyl cyclohexanone (184), and the solubility of the photoinitiator in water is good, so that no extra solvent is needed to be added, and the ink is more environment-friendly.
The components in the auxiliary agent account for 5 to 9 percent of wax emulsion, 0.1 to 0.5 percent of silicone oil, 1 to 3 percent of wetting agent and 0.1 to 0.2 percent of defoaming agent in the water-based LED curing tactility ink used in the printing and packaging field.
The wax liquid in the auxiliary agent can obviously improve the wear resistance of the surface of the ink and the wear resistance, smoothness and anti-adhesion effects of the ink, and can be aqueous high-hardness polyethylene wax aqueous dispersion, preferably aqueous wax liquid W-19 of Germany Corey company.
The high molecular weight dimethyl silicone oil can reduce friction coefficient of a layer, improve abrasion resistance, enable the surface to have smoothness, enable the surface to have more handfeel, and is preferably a Dow Corning DC-51 handfeel agent.
The defoamer is a mixture of foam breaking polysiloxane and hydrophobic solid (BYK-094) or a mixture of polyether siloxane copolymer and fumed silica Airex901W.
The wetting leveling agent is polyether modified polydimethylsiloxane (BYK-333) and polyacrylate copolymer (BYK-350).
The invention also provides a preparation method of the water-based LED curing touch ink, which is implemented according to the following steps:
step one, preparing a film-forming resin, namely uniformly mixing 70-90 parts of aqueous polyurethane acrylic resin, 8-10 parts of matte powder and 5-10 parts of deionized water on a high-speed dispersing machine, wherein the rotating speed is 800-1000 rpm, and the time is 10-30 minutes.
And step two, preparing a semi-finished product, namely adding 70-90% of the prepared film-forming resin into a mixed solvent containing 0.5-1% of a photoinitiator and 1-10% of a diluent, adding 5-10% of an auxiliary agent after the film-forming resin is completely dispersed, and stirring for the second time to prepare the semi-finished product, wherein each component in the auxiliary agent accounts for 5% -9% of wax emulsion, 0.1% -0.5% of silicone oil, 1% -3% of a wetting agent and 0.1% -0.2% of an antifoaming agent in the printing ink. The stirring speed is 100-800 rpm, the secondary stirring speed after adding the auxiliary agent is 500-800 rpm, and the stirring time is 25-30 minutes.
And thirdly, adjusting the viscosity and the pH, namely adding the semi-finished product into a high-speed dispersing agent, adjusting the viscosity to Cai En # 3 cup for 20-55 seconds plus or minus 5 seconds by using a diluent, adjusting the pH value to 8.0 plus or minus 0.5 by using ammonia water, rotating at 300-700 revolutions, and stirring for 5-10 minutes. And finally, filtering by a filter screen to obtain a finished product.
Referring to fig. 1, the present invention further provides a printing method of the aqueous-LED curable tactile ink, comprising the steps of:
s1, coating the water-based LED solidified touch ink on a gold and silver paperboard by using a gravure or soft board printer;
s2, putting the coated gold and silver paperboard into a hot air drying oven for drying;
s3, placing the dried gold and silver card paper into an LED-UV curing machine for deep curing by ultraviolet irradiation;
in step S1, the coating method may be gravure printing or flexo printing, the plate depth of the gravure printing may be 25-32 micrometers, and a plate depth in this range may result in a uniform and smooth aqueous-LED cured tactile ink layer on the gold and silver cardboard. The intaglio printed paper has a mobility of 80-150 m/min. Flexography uses conventional printing parameters.
In step S2, the temperature of the hot air drying is 105-120 ℃.
In step S3, the ultraviolet wavelength of the LED-UV curing machine is 385 nanometers, and the moving speed of the curing machine is 50-200 meters/second.
Compared with the water-based touch ink, the water-based LED curing touch ink has higher crosslinking degree due to UV curing, so that the water-based LED curing touch ink has better scratch resistance and higher adhesive force. Compared with the common water-based UV ink, the water-based touch resin has unique touch effect.
The invention is illustrated below with reference to specific examples:
example 1
A preparation method of water-based LED curing touch ink comprises the following steps:
step 1, preparing film-forming resin
80 parts of aqueous polyurethane acrylate resin (Shenzhen New Material XZ001A, shanghai, pair vast New Material science and technology Co., ltd.) 8 parts of matte powder (OK 412) and 10 parts of deionized water are uniformly mixed on a high-speed stirrer at a rotating speed of 900 revolutions per minute for 20 minutes.
Step 2, preparing a semi-finished product
The film-forming resin 80% by weight is put into a mixed solution of the photoinitiator (819 DW) 1% and the diluent 7.3% by weight, stirred uniformly at a rotation speed of 800 rpm for 15 minutes, then the rotation speed is reduced to 500 rpm, 9% of wax emulsion, 0.5% of silicone oil, 2% of wetting agent and 0.2% of defoaming agent are added, and the stirring time is 25 minutes. The wax emulsion is water-based wax liquid W-19, the silicone oil is Dow Corning DC-51, the wetting agent is BYK-333, and the defoaming agent is BYK-094.
And 3, adjusting viscosity and pH.
The semi-finished product is put into a high-speed dispersing agent, the viscosity is regulated to Cai En # 3 cup for 25 seconds plus or minus 5 seconds by a diluent, the pH value is regulated to 8.0 plus or minus 0.5 by ammonia water, the rotating speed is 700 revolutions, and the stirring time is 10 minutes. And finally, filtering by a 80-mesh filter screen to obtain a finished product.
The prepared water-based LED solidified touch ink is coated on gold and silver paperboard on a gravure printing machine according to the first step, the paper migration rate is 150 m/s, and the gravure depth is 32 microns. And then dried by a hot air oven at 120 ℃ for 2 minutes to make the surface dry. Finally, the mixture is completely cured on a 385 nanometer LED-UV curing machine, the energy of a lamp is 100%, and the curing speed is 200 m/s.
Example 2
A preparation method of water-based LED curing touch ink comprises the following steps:
step 1, preparing film-forming resin
80 parts of aqueous polyurethane acrylate resin (Shenzhen New Material Co., ltd. XZ001A, shanghai Gao Hongzhi New Material Co., ltd., 8 parts of matte powder (OK 520) and 10 parts of deionized water) are uniformly mixed on a high-speed stirrer at a rotating speed of 900 revolutions per minute for 15 minutes.
Step 2, preparing a semi-finished product
76.9% of film-forming resin is added into a mixed solution of 1% of photoinitiator and 10% of diluent, the mixture is stirred uniformly at a rotating speed of 800 rpm for 15 minutes, then the rotating speed is reduced to 500 rpm, 10% of wax emulsion, 0.5% of silicone oil, 1.5% of wetting agent and 0.1% of defoaming agent are added, and the stirring time is 30 minutes. The wax emulsion is water-based wax liquid W-19, the silicone oil is Dow Corning BYK-346, the wetting agent is BYK-350, and the defoaming agent is Di high Airex901W.
Step 3, adjusting viscosity and pH
The semi-finished product is put into a high-speed dispersing agent, the viscosity is regulated to Cai En # 3 cup for 20 seconds plus or minus 5 seconds by a diluent, the pH value is regulated to 8.0 plus or minus 0.5 by ammonia water, the rotating speed is 600 revolutions, and the stirring time is 15 minutes. And finally, filtering by a 80-mesh filter screen to obtain a finished product.
The prepared water-based LED solidified touch ink is coated on gold and silver paperboard through a flexographic printing machine according to the step of the figure, and then dried through a 115-DEG hot air oven for 2 minutes to be surface-dried. Finally, the mixture is completely cured on a 385 nanometer LED-UV curing machine, the energy of a lamp is 100%, and the curing speed is 50 m/s.
Comparative example 1
Comparative example ink preparation the aqueous-LED cured tactile ink prepared was coated on a gold and silver cardboard by a gravure press according to the first step of the figure, with a paper migration rate of 150 m/s and a gravure depth of 32 microns. And then dried by a 120-degree hot air oven for 2 minutes to make the surface dry. Finally, the mixture is completely cured on a 385 nanometer LED-UV curing machine, the energy of a lamp is 100%, and the curing speed is 220 m/s.
The performance of the three examples was tested by the following means, the results of which are shown in Table 1, and the specific test methods are as follows:
adhesion force: the coated film surface was tested by the Baige method according to GB 9286-1988.
Folding resistance: 180-degree folio, and the number of bursts was examined.
Wear-resistant and scratch-resistant: the ink abrasion resistance tester is used for testing, a 2-pound weight is selected, A4 paper is used as friction paper, and a counter records the friction times.
Viscosity: the Cai En # cup viscosity was measured at 23℃using a viscosity cup.
And (3) water resistance: tested as specified in GB 1733-1988.
TABLE 1
In summary, according to the combination of the examples and the comparative examples, the cured touch ink of the present invention can be quickly surface-dried under the action of hot air, and can be quickly cured under the irradiation of LED while improving other physical properties of the product, and by this technique, a coating having strong soft touch, scratch resistance, and high adhesion can be obtained under the condition of high-speed printing.
The foregoing has shown and described the basic principles and features of the invention and advantages of the invention.
It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the invention, and that various changes and modifications may be effected therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents.
Claims (8)
1. The water-based LED curing touch ink for the field of printing and packaging is characterized by comprising the following components in parts by weight:
70-90 parts of film forming resin;
1-10 parts of a diluent;
0.5-1 part of photoinitiator;
5-10 parts of auxiliary agent;
the film-forming resin is a mixture of aqueous polyurethane acrylic resin, matte powder and deionized water;
the auxiliary agent is one or more of wax emulsion, silicone oil, wetting agent or defoamer.
2. An aqueous-LED curable tactile ink for use in the field of printed packaging according to claim 1, wherein said diluent is deionized water.
3. The aqueous-LED curable tactile ink for use in the field of printed packaging according to claim 1, wherein the film-forming resin is formed by mixing the following components in parts by weight:
60-90 parts of aqueous polyurethane acrylic resin, 8-10 parts of matte powder and 5-10 parts of deionized water.
4. An aqueous-LED curable tactile ink for use in the field of printed packaging according to claim 1, wherein the proportion of each component in said auxiliary agent in said aqueous-LED curable tactile ink for use in the field of printed packaging is 5% to 9% of wax emulsion;
0.1% -0.5% of silicone oil;
1% -3% of wetting agent;
0.1 to 0.2 percent of defoaming agent.
5. An aqueous-LED curable tactile ink for use in the field of printed packaging according to claim 1, wherein said aqueous-LED curable tactile ink for use in the field of printed packaging has a viscosity of: zahn3# cup for 20-55 seconds; the pH value is 7.5-8.5.
6. A method of preparing an aqueous-LED curable tactile ink for use in the field of printed packaging according to any one of claims 1 to 5, comprising the steps of:
adding the film-forming resin into a mixed solvent of a diluent and a photoinitiator which are stirred at a high speed until the film-forming resin is completely dispersed, and adding the preparation and uniformly stirring to obtain a semi-finished product;
and (3) putting the semi-finished product into a dispersing machine, regulating the viscosity to 20-55 seconds plus or minus 5 seconds of Zahn3# cup by using a diluent, and regulating the pH value to 8.0 plus or minus 0.5 by using ammonia water to obtain the LED water-based gloss oil finished product.
7. The method for preparing the water-based LED cured touch ink for the field of printing and packaging according to claim 6, wherein the rotating speed is 800-100 rpm during high-speed stirring, the secondary stirring speed is 500-800 rpm after adding the auxiliary agent, and the stirring time is 25-30 minutes.
8. The method for preparing an aqueous-LED curable tactile ink for use in the field of printed packaging according to claim 6, wherein the high-speed stirring speed is not higher than 500 rpm, the temperature is not higher than 50 ℃, and the stirring time is 30 minutes.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110028820A (en) * | 2018-01-12 | 2019-07-19 | 上海荟百精细化工有限公司 | A kind of water-based gloss oil and preparation method thereof suitable for the online coding of high speed |
| CN114921169A (en) * | 2022-05-16 | 2022-08-19 | 南京林业大学 | Water-based UV (ultraviolet) curing matte skin-feel paint, and preparation method and application of coating |
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- 2022-12-15 CN CN202211613468.9A patent/CN116200070A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110028820A (en) * | 2018-01-12 | 2019-07-19 | 上海荟百精细化工有限公司 | A kind of water-based gloss oil and preparation method thereof suitable for the online coding of high speed |
| CN109517525A (en) * | 2018-09-30 | 2019-03-26 | 佛山阳光逸采涂料科技有限公司 | A kind of UV LED UV-curable waterborne ecological vegetable oil and preparation method thereof |
| CN109926291A (en) * | 2019-03-28 | 2019-06-25 | 湖南邦弗特新材料技术有限公司 | A kind of coating process of UV light solidifying matt film |
| CN114921169A (en) * | 2022-05-16 | 2022-08-19 | 南京林业大学 | Water-based UV (ultraviolet) curing matte skin-feel paint, and preparation method and application of coating |
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