Water-based ink for intaglio printing process of aluminum foil and preparation method of water-based ink

Abstract

The invention provides water-based ink for the intaglio printing process of aluminum foil. The ink is prepared from, by mass, 20-30% of water-based organic pigment, 20-25% of water-based acrylic resin, 20-25% of water-based acrylic emulsion, 0.5-1.5% of flatting agent, 0.1-0.3% of defoaming agent, 10-15% of ethyl alcohol and 10-20% of water. A preparation method includes the steps of evenly dispersing water, acrylic resin, acrylic emulsion, water-based pigment and ethyl alcohol, heating the materials till the temperature is 30-55 DEG C, evenly stirring and grinding the materials, adding flatting agent and defoaming agent, controlling the viscosity of ink for 10-20 seconds, and obtaining the water-based ink. The water-based ink is excellent in performance, safe and environmentally friendly, harms to a user can be reduced, the preparation method of the water-based ink is simple, the viscosity of the ink is easy to control, and the ink has wide application prospects.

Description

technical field

[0001] The invention belongs to the technical field of ink manufacture, and in particular relates to a water-based ink for aluminum foil gravure printing, and also relates to a preparation method of the water-based ink for aluminum foil gravure printing. Background technique

[0002] Aluminum foil gravure printing is widely used in flexible packaging printing, especially in paper packaging, pharmaceutical packaging and other fields in China. Green printing has become the development direction of the printing industry. At present, the main problem of aluminum foil gravure printing is that organic solvent-based inks are widely used now. This type of ink has certain toxicity, endangers the health of operators, pollutes the environment, and is not safe to store (flammable and explosive). , easy oxides seriously exceed the standard, increasing the emission of VOC (volatile organic compounds), which is not conducive to environmental protection; at the same time, or...

Examples

preparation example Construction

[0038] The present invention also provides a preparation method of the above-mentioned water-based ink for aluminum foil gravure printing, comprising the following steps:

[0039] Step 1, disperse

[0040] The components are pre-dispersed, and the water, acrylic resin, acrylic emulsion, water-based pigment and ethanol in the raw material components of the above-mentioned aluminum foil gravure printing water-based ink are sequentially added to the disperser to disperse, and the dispersion speed is 1500 rpm to 2500 rpm RPM, disperse for 1-4 hours.

[0041] Step 2, stir

[0042] Add all the dispersed mixture in step 1 into the mixing bucket, heat to 30-55°C, and stir evenly at high temperature.

[0043] Step 3, Grinding

[0044] The mixed liquid after stirring is ground on a sand mill for 1-2 hours, and the fineness is controlled within the range of 10-15um.

[0045] Step 4, adjust the ink

[0046] A leveling agent and a defoamer are added to control the viscosity of the ink...

Embodiment 1

[0048] A water-based ink for aluminum foil gravure printing was prepared.

[0049] Weigh raw materials, according to mass percentage, raw materials are respectively: water-based organic pigment 20.6%, water-based acrylic resin 19.5%, water-based acrylic emulsion 25.3%, leveling agent 0.5%, mineral oil defoamer 0.1%, ethanol 15%, water 20% %. Among them, the water-based pigments are composed of yellow Y-12, red R-57.1, blue B-15.3, black K-25, golden red R-48.1, and green G-7. The water-based acrylic resin adopts water-based acrylic resin with excellent film-forming properties, strong chemical resistance and good adsorption performance on aluminum foil materials. Its molecular weight is 14,000, its solid content is 35% to 45%, and its pH value is 8.0 to 9.5. The water-based acrylic emulsion adopts the water-based acrylic emulsion with high gloss, high hardness, good heat resistance and good transfer performance. The molecular weight is 180,000, the solid content is 35% to 45%,...

Embodiment 2

[0053] Preparation of a water-based ink for aluminum foil gravure printing

[0054]Weigh raw materials, according to mass percentage, raw materials are respectively: water-based organic pigment 25%, water-based acrylic resin 23.5%, water-based acrylic emulsion 22.8%, leveling agent 1.0%, mineral oil defoamer 0.2%, ethanol 12.5%, water 15% %. Among them, the water-based organic pigments are composed of yellow Y-13, red R-57.1, blue B-15.3, black K-25, golden red R-48.1 and green G-7. The water-based acrylic resin is water-based acrylic resin with excellent film-forming properties, strong chemical resistance and good adsorption performance on aluminum foil materials. Its molecular weight is 18,000, its solid content is 35% to 45%, and its pH value is 8.0 to 9.5. The water-based acrylic emulsion is water-based acrylic emulsion with high gloss, high hardness, good heat resistance and good transfer performance. Its molecular weight is 250,000, its solid content is 35% to 45%, and ...

technical field

[0001] The invention belongs to the technical field of ink manufacture, and in particular relates to a water-based ink for aluminum foil gravure printing, and also relates to a preparation method of the water-based ink for aluminum foil gravure printing. Background technique

[0002] Aluminum foil gravure printing is widely used in flexible packaging printing, especially in paper packaging, pharmaceutical packaging and other fields in China. Green printing has become the development direction of the printing industry. At present, the main problem of aluminum foil gravure printing is that organic solvent-based inks are widely used now. This type of ink has certain toxicity, endangers the health of operators, pollutes the environment, and is not safe to store (flammable and explosive). , easy oxides seriously exceed the standard, increasing the emission of VOC (volatile organic compounds), which is not conducive to environmental protection; at the same time, or...

Examples

preparation example Construction

[0038] The present invention also provides a preparation method of the above-mentioned water-based ink for aluminum foil gravure printing, comprising the following steps:

[0039] Step 1, disperse

[0040] The components are pre-dispersed, and the water, acrylic resin, acrylic emulsion, water-based pigment and ethanol in the raw material components of the above-mentioned aluminum foil gravure printing water-based ink are sequentially added to the disperser to disperse, and the dispersion speed is 1500 rpm to 2500 rpm RPM, disperse for 1-4 hours.

[0041] Step 2, stir

[0042] Add all the dispersed mixture in step 1 into the mixing bucket, heat to 30-55°C, and stir evenly at high temperature.

[0043] Step 3, Grinding

[0044] The mixed liquid after stirring is ground on a sand mill for 1-2 hours, and the fineness is controlled within the range of 10-15um.

[0045] Step 4, adjust the ink

[0046] A leveling agent and a defoamer are added to control the viscosity of the ink...

Embodiment 1

[0048] A water-based ink for aluminum foil gravure printing was prepared.

[0049] Weigh raw materials, according to mass percentage, raw materials are respectively: water-based organic pigment 20.6%, water-based acrylic resin 19.5%, water-based acrylic emulsion 25.3%, leveling agent 0.5%, mineral oil defoamer 0.1%, ethanol 15%, water 20% %. Among them, the water-based pigments are composed of yellow Y-12, red R-57.1, blue B-15.3, black K-25, golden red R-48.1, and green G-7. The water-based acrylic resin adopts water-based acrylic resin with excellent film-forming properties, strong chemical resistance and good adsorption performance on aluminum foil materials. Its molecular weight is 14,000, its solid content is 35% to 45%, and its pH value is 8.0 to 9.5. The water-based acrylic emulsion adopts the water-based acrylic emulsion with high gloss, high hardness, good heat resistance and good transfer performance. The molecular weight is 180,000, the solid content is 35% to 45%,...

Embodiment 2

[0053] Preparation of a water-based ink for aluminum foil gravure printing

[0054]Weigh raw materials, according to mass percentage, raw materials are respectively: water-based organic pigment 25%, water-based acrylic resin 23.5%, water-based acrylic emulsion 22.8%, leveling agent 1.0%, mineral oil defoamer 0.2%, ethanol 12.5%, water 15% %. Among them, the water-based organic pigments are composed of yellow Y-13, red R-57.1, blue B-15.3, black K-25, golden red R-48.1 and green G-7. The water-based acrylic resin is water-based acrylic resin with excellent film-forming properties, strong chemical resistance and good adsorption performance on aluminum foil materials. Its molecular weight is 18,000, its solid content is 35% to 45%, and its pH value is 8.0 to 9.5. The water-based acrylic emulsion is water-based acrylic emulsion with high gloss, high hardness, good heat resistance and good transfer performance. Its molecular weight is 250,000, its solid content is 35% to 45%, and ...