CN108912831A - A kind of environment-friendly water-based gravure ink and preparation method thereof - Google Patents

Abstract

The present invention relates to a kind of environment-friendly water-based gravure inks and preparation method thereof, belong to printing technical field of ink.Aquosity intaglio printing ink of the present invention includes following raw material components by weight percentage：Main film forming substance 84.6% ~ 85.9%, pigment 0.3% ~ 0.6%, filler material 13% ~ 15%, lubricant 0.1% ~ 0.5%.The present invention is suitable for intaglio printing by each raw material component and its weight percent in optimization of C/C composites, the water-based ink of acquisition, and printing adaptability is good, wearability is high, glossiness is good.Using water-soluble resin as solvent, free from extraneous odour, nontoxic, low VOC, the detected value of dissolvent residual have characteristic of environmental protection well below the index value of safety and health request.The raw material sources of water-based ink of the present invention are wide, and preparation cost is low, and transport and storage are convenient, and stability is good, application easy to spread.

Description

A kind of environment-friendly water-based gravure printing ink and preparation method thereof

technical field

The invention relates to an environment-friendly water-based gravure printing ink and a preparation method thereof, belonging to the technical field of printing inks.

Background technique

Green packaging is the development trend of the printing industry. The organic solvents and thinners of solvent-based inks contain VOC components to some extent. During the drying process, most of the volatilized solvents will pollute the atmosphere, while a small amount of solvents remaining in the printed matter will harm the human body. Water-based ink is currently recognized as an environmentally friendly ink. It uses water as a solvent carrier. No matter in its production process or when it is used for printing, it will hardly emit VOCs to the atmosphere, which is unmatched by solvent-based inks.

Although water-based ink has obvious advantages in solving the problem of VOCs exceeding the standard, it also brings new challenges and problems to printing companies, that is, it is necessary to overturn the inherent thinking of solvent-based ink printing, find another way, and explore and study the printing suitability that matches water-based ink. This requires relevant companies to make adjustments and choices in terms of ink raw material selection, ink solvent ratio, printing plate parameters, and printing equipment parameters. Therefore, the complete water-based printing ink needs a process.

Contents of the invention

The technical problem to be solved by the present invention is to provide an environmentally friendly water-based gravure ink with good printing adaptability, high wear resistance and good gloss and a preparation method thereof.

The technical solution adopted in the present invention is: an environmentally friendly water-based gravure ink, comprising the following raw material components by weight percentage: 84.6%~85.9% of the main film-forming substance, 0.3%~0.6% of the pigment, 13%~15% of the filler, Lubricant 0.1%~0.5%;

The main film-forming substance is an acrylic acid prepolymer;

The pigment is mixed with light-fast blue powder and light-fast yellow powder in a ratio of 1:1 to 2:1 by weight;

The filler is selected from one or both of titanium dioxide, colloidal calcium carbonate, and talcum powder and mixed in any proportion;

The lubricant is polyethylene wax.

The preparation method of described environment-friendly water-based gravure ink, comprises the steps:

(1) Prepare a clean feeding cylinder, place it in the disperser and fix the cylinder body;

(2) Add the main film-forming material into the feeding tank, and add lubricant while stirring to make it fully mixed. The stirring speed is 1000~1200r/min, and the stirring time is 15~25min;

(3) Slowly add the pigment into the mixed solution for infiltration, stir and disperse it through a high-speed disperser to prepare a spare color paste, wherein the stirring speed is 800~1200r/min, and the stirring time is 5~10min;

(4) Add the filler to the dispersed spare color paste, grind and disperse it through a high-speed grinder, continue grinding for 30 minutes, and disperse until the fineness is 15-20 μm, and the grinding speed is 1800-2000r/min;

(5) Add the ground mixed solution into the filter vessel, and filter with suction to obtain the finished water-based ink.

The beneficial effects of the present invention are:

1. In the invention, by optimizing the raw material components and their weight percentages in the formula, the obtained water-based ink is suitable for gravure printing, and has good printing adaptability, high abrasion resistance and good gloss.

2. The water-based ink of the present invention uses water-soluble resin as a solvent, has no peculiar smell, is non-toxic, and has low VOC. The detection value of solvent residue is far lower than the index value required by safety and hygiene, and has the characteristics of environmental protection.

3. The water-based ink of the invention has wide sources of raw materials, low preparation cost, convenient transportation and storage, good stability and easy popularization and application.

Detailed ways

The present invention will be described in further detail below in conjunction with specific embodiments.

Example 1:

The environment-friendly water-based gravure ink of the present embodiment comprises the following raw material components by weight percentage: 84.6% of main film-forming substances, 0.3% of pigments, 15% of fillers, and 0.1% of lubricants;

The main film-forming substance is an acrylic acid prepolymer;

The pigment is light-fast blue powder and light-fast yellow powder mixed in a ratio of 2:1 by weight;

Described filling material is that titanium dioxide, colloidal calcium carbonate are mixed using in the ratio of 12:3 by weight percentage;

The lubricant is polyethylene wax.

The preparation method of the environmental protection water-based gravure printing ink described in the present embodiment, comprises the steps:

(1) Prepare a clean feeding cylinder, place it in the disperser and fix the cylinder body;

(2) Add 846g of acrylic acid prepolymer into the feeding tank, and add 1g of lubricant while stirring to make it fully mixed. The stirring speed is 1000r/min, and the stirring time is 15min;

(3) Slowly add 2g of light-fast blue powder and 1g of light-fast yellow powder into the mixed solution for infiltration, and stir and disperse them through a high-speed disperser to prepare a spare color paste. The stirring speed is 800r/min. Stirring time is 5min;

(4) Add 120g of titanium dioxide and 30g of colloidal calcium carbonate to the dispersed spare color paste in turn, grind and disperse them through a high-speed grinder, and continue grinding for 30 minutes until the fineness is 15 μm, and the grinding speed is 2000r/min ;

(5) Add the ground mixed solution into the filter vessel, and filter with suction to obtain the finished water-based ink.

The water-based ink prepared in this example is used on 240g Universal Federation white cardboard, and the specific steps are as follows: select a roll of Universal Federation white cardboard for background color gravure printing, and when using a 70L/cm anilox roller to coat and print, the water-based ink The dosage is controlled at 10g/m ² . Use the TF-804 friction tester to measure the friction resistance of the ink layer of the printed matter, and the result is no fading and no scratches; use the MXD-01 friction coefficient tester to measure the static friction coefficient of the printed matter surface is 0.30~0.40, and the dynamic friction coefficient is 0.20~0.30; The glossiness of the finished product measured by a GM glossmeter is ≥60.

Example 2:

The environment-friendly water-based gravure ink of the present embodiment comprises the following raw material components by weight percentage: 85.0% of main film-forming substances, 0.6% of pigments, 14% of fillers, and 0.4% of lubricants;

The main film-forming substance is an acrylic acid prepolymer;

The pigment is light-fast blue powder and light-fast yellow powder mixed in a ratio of 1:1 by weight;

Described filler is that titanium dioxide, talcum powder are used in the ratio of 2:5 by weight percentage;

The lubricant is polyethylene wax.

The preparation method of the environmental protection water-based gravure printing ink described in the present embodiment, comprises the steps:

(1) Prepare a clean feeding cylinder, place it in the disperser and fix the cylinder body;

(2) Add 850g of acrylic acid prepolymer into the feeding tank, and add 4g of lubricant while stirring to make it fully mixed. The stirring speed is 1200r/min, and the stirring time is 20min;

(3) Slowly add 3g of light-fast blue powder and 3g of light-fast yellow powder into the mixed solution for infiltration, and stir and disperse them through a high-speed disperser to prepare a spare color paste, wherein the stirring speed is 1000r/min, Stirring time is 8min;

(4) Add 40g of titanium dioxide and 100g of colloidal calcium carbonate to the dispersed spare color paste in turn, grind and disperse them through a high-speed grinder, and continue grinding for 30 minutes until the fineness is 18 μm, and the grinding speed is 2000r/min ;

(5) Add the ground mixed solution into the filter vessel, and filter with suction to obtain the finished water-based ink.

The water-based ink prepared in this example is used on 225g Huaxia Sun white cardboard, and the specific steps are as follows: select a roll of Huaxia Sun white cardboard for background color gravure printing, and when using a 120L/cm anilox roll to coat and print, the water-based ink The dosage is controlled at 10g/m ² . Use the TF-804 friction tester to measure the friction resistance of the ink layer of the printed matter, and the result is no fading and no scratches; use the MXD-01 friction coefficient tester to measure the static friction coefficient of the printed matter surface is 0.35~0.45, and the dynamic friction coefficient is 0.15~0.25; The glossiness of the finished product measured by a GM glossmeter is ≥60.

Example 3:

The environment-friendly water-based gravure ink of the present embodiment comprises the following raw material components by weight percentage: 85.9% of main film-forming substances, 0.6% of pigments, 13% of fillers, and 0.5% of lubricants;

The main film-forming substance is an acrylic acid prepolymer;

The pigment is a light-fast blue powder and a light-fast yellow powder mixed in a ratio of 2:1 by weight;

Described filler is colloidal calcium carbonate;

The lubricant is polyethylene wax.

The preparation method of the environmental protection water-based gravure printing ink described in the present embodiment, comprises the steps:

(1) Prepare a clean feeding cylinder, place it in the disperser and fix the cylinder body;

(2) Add 859g of acrylic acid prepolymer into the feeding tank, and add 5g of lubricant while stirring to make it fully mixed. The stirring speed is 1000r/min, and the stirring time is 25min;

(3) Slowly add 4g of light-fast blue powder and 2g of light-fast yellow powder into the mixed solution for infiltration, and stir and disperse them through a high-speed disperser to prepare a spare color paste, wherein the stirring speed is 1200r/min, Stirring time is 10min;

(4) Add 130g of colloidal calcium carbonate to the dispersed spare color paste in turn, grind and disperse it through a high-speed grinder, and continue grinding for 30 minutes until the fineness is 20 μm, and the grinding speed is 1800r/min;

(5) Add the ground mixed solution into the filter vessel, and filter with suction to obtain the finished water-based ink.

The water-based ink prepared in this embodiment is used on 230g Chinese white cardboard, and the specific steps are as follows: select a roll of Chinese white cardboard to carry out background color gravure printing, use 80L/cm anilox roller to coat and print, and the consumption of water-based ink is controlled at 10 g/m ² . Use the TF-804 friction tester to measure the friction resistance of the ink layer of the printed matter, and the result is no fading and no scratches; use the MXD-01 friction coefficient tester to measure the static friction coefficient of the printed matter surface is 0.30~0.40, and the dynamic friction coefficient is 0.15~0.25; The glossiness of the finished product measured by a GM glossmeter is ≥60.

The specific embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-mentioned embodiments, and various changes can also be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the art .

Claims (6)

1. An environmentally friendly water-based gravure printing ink, characterized in that: it comprises the following raw material components by weight percentage: 84.6%~85.9% of main film-forming substances, 0.3%~0.6% of pigments, 13%~15% of fillers, lubricants 0.1%~0.5%. 2. A kind of environment-friendly water-based gravure ink according to claim 1, characterized in that: the main film-forming substance is acrylic acid prepolymer. 3. A kind of environment-friendly water-based gravure ink according to claim 1, characterized in that: the pigment is mixed with light-fast blue powder and light-fast yellow powder in a ratio of 1:1 to 2:1 by weight . 4. A kind of environment-friendly water-based gravure ink according to claim 1, characterized in that: the filler is selected from one or two of titanium dioxide, colloidal calcium carbonate, and talcum powder and mixed in any proportion. 5. A kind of environment-friendly water-based gravure ink according to claim 1, characterized in that: the lubricant is polyethylene wax. 6. a preparation method of the environmental protection water-based gravure printing ink according to claim 1, is characterized in that: comprises the steps: (1) Prepare a clean feeding cylinder, place it in the disperser and fix the cylinder body; (2) Add the main film-forming material into the feeding tank, and add lubricant while stirring to make it fully mixed. The stirring speed is 1000~1200r/min, and the stirring time is 15~25min; (3) Slowly add the pigment into the mixed solution for infiltration, stir and disperse it through a high-speed disperser to prepare a spare color paste, wherein the stirring speed is 800~1200r/min, and the stirring time is 5~10min; (4) Add the filler to the dispersed spare color paste, grind and disperse it through a high-speed grinder, continue grinding for 30 minutes, and disperse until the fineness is 15-20 μm, and the grinding speed is 1800-2000r/min; (5) Add the ground mixed solution into the filter vessel, and filter with suction to obtain the finished water-based ink.