Flexographic plate water-based ink for high-speed printing and preparation method thereof

A water-based ink, high-speed printing technology, applied in ink, household utensils, applications, etc., can solve the problems of being unable to adapt to high-speed flexographic printing, and achieve excellent leveling and overprinting effects, fast drying speed, and high color saturation.

Active Publication Date: 2015-11-18
山东布瑞特油墨有限公司
2 Cites 19 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0006] The invention provides a flexographic water-based ink for high-speed printing and a preparation method thereof, which is used ...
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Abstract

The present invention provides a flexographic plate water-based ink for high-speed printing and a preparation method thereof. The flexographic plate water-based ink comprises the following components by weight: 30-40 parts of a non-film forming acrylic emulsion, 5-10 parts of an acrylic film-forming emulsion, 15-0 parts of an acrylic resin solution, 30-40 parts of an aqueous paste, 1-3 parts of polyethylene wax, 1-2 parts of a film-forming aid, 0.3-1 part of a leveling agent, 0.1-0.5 part of a defoamer, 3-7 parts of deionized water and a pH modifier. The non-film forming acrylic emulsion is an acrylic emulsion with Tg value no less than 90 DEG C, the acrylic film-forming emulsion is an acrylic emulsion with Tg value less than 30 DEG C, the content of the pigment in the aqueous paste is 40-45%, and the pH modifier reaches pH value of the flexographic plate water-based ink of 8-9.5. The water-based ink can well adapt to printing of high-speed satellite-type press, and has good re-solubility and excellent leveling and trapping effect; and the printed product has high color saturation, bright color and good gloss; therefore, the water-based ink has wide range of applications.

Application Domain

Inks

Technology Topic

IonEmulsion +11

Image

  • Flexographic plate water-based ink for high-speed printing and preparation method thereof

Examples

  • Experimental program(5)
  • Comparison scheme(2)
  • Effect test(1)

Example Embodiment

[0028] Example 1
[0029] The high-speed printing flexographic water-based ink of this embodiment is composed of the following components by weight: 32.9 parts of acrylic non-film forming emulsion, 5 parts of acrylic film forming emulsion, 15 parts of acrylic resin solution A, 39 parts of water-based color paste, and polyethylene 1.5 parts of wax, 1 part of film forming aid, 0.3 part of leveling agent, 0.1 part of defoaming agent, 0.2 part of pH regulator and 5 parts of deionized water.
[0030] Among the above-mentioned flexographic water-based inks:
[0031] The acrylic non-film-forming emulsion adopts acrylic emulsion BasfJoncryl89 with a solid content of 48%, a Tg value of 98°C, an acid value of 50mgKOH/g, and a pH value of 8.3; the acrylic film-forming emulsion adopts acrylic emulsion BasfJoncryl77 with a solid content of 46% , Tg value is 21°C, acid value is 55mgKOH/g, pH value is 8.3; polyethylene wax is specifically polyethylene wax MD-2000; film forming aid is specifically propylene glycol methyl ether; leveling agent is specifically TEGOWET500; defoaming The specific agent is BYK093; the pH adjusting agent is specifically diethanolamine; and they are all commercially available.
[0032] Acrylic resin solution A is composed of the following components by weight: 33 parts of acrylic resin A (Joncryl678), 55.4 parts of deionized water, 10 parts of diethanolamine, AMP-951.5 parts, and 0.1 parts of defoamer BYK093; of which acrylic resin solution The pH of A is 8.5 to 9.5, and the Tg value of acrylic resin A (Joncryl678) is 85°C, the acid value is 215 mgKOH/g, and the average molecular weight is 8600.
[0033] The water-based color paste is composed of the following components by weight: 40 parts of red pigment (PR57:1), 25 parts of acrylic resin solution B, 32.9 parts of deionized water, 2 parts of wetting and dispersing agent (TEGOdispers760) and defoaming agent BYK0930.1 Parts; Among them: acrylic resin solution B consists of 35 parts of acrylic resin B (Joncryl696), 56.4 parts of deionized water, 4.5 parts of monoethanolamine, 4.5 parts of diethanolamine and 0.1 parts of defoamer, and its pH value is 8.5~9.5, and acrylic acid Resin B (Joncryl696) has a Tg value of 88, an acid value of 220 mgKOH/g, and an average molecular weight of 16,000.
[0034] The above-mentioned flexographic water-based ink can be prepared by the following method:
[0035] 1. Prepare acrylic resin solution A
[0036] Add 33 parts of the above acrylic resin A and 55.4 parts of deionized water into the reaction kettle. After the temperature is raised to about 70°C, add 10 parts of diethanolamine, 1.5 parts of AMP-95 and 0.1 parts of defoamer BYK093 under stirring, and make the reaction The pH value of the solution in the kettle is maintained at 8.5-9.5, and after cooling to room temperature, acrylic resin solution A is prepared.
[0037] 2. Preparation of water-based color paste
[0038] Add 35 parts of the above acrylic resin B and 56.4 parts of deionized water into the reactor. After heating to about 70°C, add 4.5 parts of monoethanolamine, 4.5 parts of diethanolamine and 0.1 parts of defoamer under stirring, and put them in the reactor The pH of the solution was maintained at 8.5-9.5, and after cooling to room temperature, acrylic resin solution B was prepared.
[0039] Add 25 parts of the above acrylic resin solution B, 32.9 parts of deionized water, 2 parts of the above wetting and dispersing agent, and 0.1 part of the above defoaming agent into the reaction kettle. After stirring evenly, add 40 parts of the above red pigment at 900r/min After stirring for 2h at a speed of, then grind it with a sand mill to a particle size ≤10μm to prepare an aqueous color paste.
[0040] 3. Preparation of flexographic water-based ink
[0041] According to the above weight parts, stir and mix the above acrylic non-film forming emulsion and acrylic film forming emulsion at a speed of 600r/min to prepare a mixed emulsion; at a speed of 900r/min, add the above acrylic acid to the mixed emulsion according to weight parts Resin solution A, after stirring and mixing, continue to add the above-mentioned leveling agent, polyethylene wax, film-forming aid, pH adjuster, defoamer and deionized water in sequence. After fully stirring for 10 minutes, add the above-mentioned water-based color paste. After stirring and mixing at a rotation speed of 500 r/min, filtration was performed to prepare the above-mentioned flexographic water-based ink.

Example Embodiment

[0042] Example 2
[0043] The high-speed printing flexographic water-based ink of this embodiment is composed of the following components by weight: 34.7 parts of acrylic non-film forming emulsion, 5 parts of acrylic film forming emulsion, 18 parts of acrylic resin solution A, 35 parts of water-based color paste, and polyethylene Wax 1 part, film forming aid 1.5 parts, leveling agent 0.5 part, defoaming agent 0.1 part, pH regulator 0.2 part and deionized water 4 parts; except for the aqueous color paste, other components are the same as in Example 1.
[0044] The aqueous color paste is composed of the following components by weight: 45 parts of yellow pigment (PY14), 26 parts of acrylic resin solution B, 28.4 parts of deionized water, 1.5 parts of wetting and dispersing agent (TEGOdispers760) and 0.1 part of defoaming agent BYK093; Wherein: acrylic resin solution B is the same as in Example 1.
[0045] The above-mentioned flexographic water-based ink can be prepared by the following method:
[0046] 1. Preparation of water-based color paste
[0047] Add 26 parts of the above acrylic resin solution B, 28.4 parts of deionized water, 1.5 parts of the above wetting and dispersing agent, and 0.1 parts of the above defoaming agent to the reaction kettle. After stirring, add 45 parts of the above yellow pigment at 900r/min After stirring for 2.5h at a speed of, then grind it with a sand mill to a particle size of ≤10μm to prepare an aqueous color paste.
[0048] 2. Preparation of flexographic water-based ink
[0049] According to the above weight parts, stir and mix the above acrylic non-film forming emulsion and acrylic film forming emulsion at a speed of 600r/min to prepare a mixed emulsion; at a speed of 900r/min, add the above acrylic acid to the mixed emulsion according to weight parts Resin solution A, after stirring and mixing, continue to add the above-mentioned leveling agent, polyethylene wax, film-forming aid, pH adjuster, defoamer and deionized water in sequence. After fully stirring for 10 minutes, add the above-mentioned water-based color paste. After stirring and mixing at a rotation speed of 500 r/min, filtration was performed to prepare the above-mentioned flexographic water-based ink.

Example Embodiment

[0050] Example 3
[0051] The high-speed printing flexographic water-based ink of this embodiment consists of the following components by weight: 35 parts of acrylic non-film forming emulsion, 6 parts of acrylic film forming emulsion, 17 parts of acrylic resin solution A, 35 parts of water-based color paste, and polyethylene 1 part of wax, 1 part of film forming aid, 0.5 part of leveling agent, 0.1 part of antifoaming agent, 0.2 part of pH regulator and 4.2 parts of deionized water.
[0052] Among the above-mentioned flexographic water-based inks:
[0053] Acrylic non-film-forming emulsion uses acrylic emulsion IndulorSE900; acrylic acid film-forming emulsion uses acrylic emulsion IndulorSE2872; polyethylene wax specifically polyethylene wax AQUAACER552; specifically butyl carbitol; leveling agent specifically SURFYNOL420; defoaming The specific agent is TEGO1488; the pH adjusting agent is specifically AMP-95; and they are all commercially available.
[0054] Acrylic resin solution A is composed of the following components by weight: 35 parts of acrylic resin A (IndulorSR10), 54.4 parts of deionized water, 9 parts of diethanolamine, AMP-951.5 parts, and 0.1 parts of defoamer BYK093; of which acrylic resin solution The pH value of A is 8.5-9.5, and the Tg value of acrylic resin A (IndulorSR10) is 105°C, the acid value is 220 mgKOH/g, and the average molecular weight is 8000.
[0055] The water-based color paste is composed of the following components by weight: 45 parts of blue pigment (PB15: 3), 25 parts of acrylic resin solution B, 29.4 parts of deionized water, 1.5 parts of wetting and dispersing agent (HLD-11) and defoaming agent TEGO14880.1 parts; among them: acrylic resin solution B consists of 37 parts of acrylic resin B (Joncryl690), 53.9 parts of deionized water, 4.5 parts of monoethanolamine, 4.5 parts of diethanolamine and 0.1 part of antifoaming agent, and its pH value is 8.5~9.5 And acrylic resin B (Joncryl690) has a Tg value of 102, an acid value of 240 mgKOH/g, and an average molecular weight of 16,500.
[0056] The above-mentioned flexographic water-based ink can be prepared by referring to the preparation method of Example 1.
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PUM

PropertyMeasurementUnit
Tg value98.0°C
Acid value50.0mgKOH/g
Tg value21.0°C
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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