阅读说明：本技术 快速固化型uv胶印油墨及uv胶印油墨快速固化印刷方法 (Fast curing type UV offset printing ink and fast curing printing method of UV offset printing ink ) 是由 黄泽晓 占小富 陈利科 卢西 黄华 于 2020-12-22 设计创作，主要内容包括：本发明属于油墨印刷技术领域,尤其涉及一种快速固化型UV胶印油墨及UV胶印油墨快速固化印刷方法。快速固化型UV胶印油墨包括以下成分质量百分比：引发剂3％～10％、助引发剂1％～5％、树脂45％～55％、分散剂1％～3％、单体12％～18％、颜料15％～20％、填料2％～5％；其中,引发剂包括2-异丙基硫杂蒽酮和2-苯基苄-2-二甲基胺-1-(4-吗啉苄苯基)丁酮；助引发剂为4-二甲基氨基苯甲酸乙酯；树脂为改性聚酯丙烯酸树脂；单体为三羟甲基丙烷三丙烯酸酯。经过上机测试,单色油墨印刷时可以达到16000张/时的速度,现有技术通常只有12000张/时的速度；而四色油墨印刷时可以达到11800张/时的速度,现有技术通常只有8200张/时的速度。如此,本发明提供的快速固化型UV胶印油墨的固化速度实现了大大地提高。(The invention belongs to the technical field of ink printing, and particularly relates to a fast curing type UV offset printing ink and a fast curing printing method of the UV offset printing ink. The quick-curing UV offset printing ink comprises the following components in percentage by mass: 3-10% of initiator, 1-5% of co-initiator, 45-55% of resin, 1-3% of dispersant, 12-18% of monomer, 15-20% of pigment and 2-5% of filler; wherein the initiator comprises 2-isopropyl thioxanthone and 2-phenyl benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone; the auxiliary initiator is 4-dimethyl ethyl aminobenzoate; the resin is modified polyester acrylic resin; the monomer is trimethylolpropane triacrylate. Through the on-machine test, the speed of 16000 sheets/hour can be reached when the single-color ink is printed, and the prior art generally has the speed of 12000 sheets/hour; while the four-color ink can reach 11800 sheets/hour in printing, the prior art generally has only 8200 sheets/hour. Thus, the curing speed of the rapid curing type UV offset printing ink provided by the invention is greatly improved.)

1. A fast curing type UV offset printing ink is characterized in that: comprises the following components in percentage by mass:

wherein the initiator comprises 2-isopropyl thioxanthone and 2-phenylbenzyl-2-dimethylamine-1- (4-morpholinebenzyl phenyl) butanone; the auxiliary initiator is ethyl 4-dimethylaminobenzoate; the resin is modified polyester acrylic resin; the monomer is trimethylolpropane triacrylate.

2. The fast curing UV offset printing ink according to claim 1, characterized in that: the dispersant is dispersant 24000; the filler is magnesium carbonate.

3. The fast curing UV offset printing ink according to claim 2, characterized in that: the rapid curing type UV offset printing ink is red ink; the red ink comprises the following components in percentage by mass:

4. the fast curing UV offset printing ink according to claim 2, characterized in that: the quick-curing UV offset printing ink is yellow ink; the yellow ink comprises the following components in percentage by mass:

5. the fast curing UV offset printing ink according to claim 2, characterized in that: the fast curing type UV offset printing ink is blue ink; the blue ink comprises the following components in percentage by mass:

6. the fast curing UV offset printing ink according to claim 2, characterized in that: the fast curing type UV offset printing ink is black ink; the black ink comprises the following components in percentage by mass:

7. a UV offset printing ink rapid curing printing method is characterized in that: the method comprises the following steps:

s100: providing a printing stock, and placing the printing stock on a printing device;

s200: providing the fast curing UV offset printing ink according to any one of claims 1 to 6, and printing the fast curing UV offset printing ink on the substrate by the printing equipment.

8. The UV flexographic ink fast cure printing method according to claim 7, characterized in that: the printing stock is a 350G silver card, and the 350G silver card comprises the following components in parts by weight:

9. the UV flexographic ink fast cure printing method according to claim 7, characterized in that: the coefficient indexes of the water supply system in the printing equipment are as follows:

the pH value of the alkalinity is between 4.7 and 5.2;

the conductivity value is between 800US and 1000 US;

the proportion of the water bucket liquid is between 1.5 per mill and 3.5 per mill;

the proportion of the alcohol is between 7 per mill and 12 per mill;

the humidity of the water tank is between 8 and 12 ℃;

the water hardness is between 50PPM and 100 PPM.

10. The UV flexographic ink fast cure printing method according to claim 7, characterized in that: the environment control in the printing room where the printing equipment is located is as follows: the temperature is between 23 ℃ and 24 ℃, and the relative humidity is between 60 percent and 70 percent.

Technical Field

The invention belongs to the technical field of ink printing, and particularly relates to a fast curing type UV offset printing ink and a fast curing printing method of the UV offset printing ink.

Background

UV (ultraviolet) curing ink is energy curing ink which is quickly cross-linked and cured into an ink film by ultraviolet irradiation. The main advantages of UV curable inks compared to offset inks of the thermosetting and volatile drying type are: the curing time is short, the energy consumption is low, the printing field is saved, and the efficiency is high; the printing thick ink layer can be cured at one time, the maximum thickness can reach 100-150 mu m, and the ink layer is thick and solid; the paint does not contain organic solvent, almost 100 percent of the paint is solidified into a film, and the paint does not volatilize the organic solvent, thereby being green and environment-friendly; the printed product has bright color, full and clear mesh points, high grade, and good heat resistance, solvent resistance and scratch resistance of the cured ink film.

The UV curing ink has high drying speed, accelerates printing speed, is very suitable for the existing automatic production, is in line with the environmental protection development direction of modern coatings and inks due to no pollution in the printing production process, is more and more widely applied in the printing industry, and has gradually increased market share in recent years. At present, offset printing UV ink is always the biggest market of UV ink and is mainly applied to packaging and printing enterprises, and a printed product subjected to offset printing has the double advantages of environmental protection and high offset printing quality.

For printing and packaging enterprises, in a new economic age, market competition is increasingly vigorous and complex, and in the face of changeable and personalized requirements of customers, more and more enterprises aim at aiming at obtaining market wins by increasing speed and meeting the requirements of customers more quickly and better. In recent years, printing equipment is continuously updated, the printing speed which can be achieved is continuously updated, and printing packaging factories have higher requirements on the printing speed in order to further improve the yield, so that the curing speed of the UV offset printing ink is higher. For printing and packaging companies, the curing problem of UV offset printing is solved, the proofing requirement and the production requirement of customers can be efficiently met, and the UV offset printing ink can stand out in intense market competition.

Disclosure of Invention

The invention aims to provide a fast curing type UV offset printing ink and a fast curing printing method of the UV offset printing ink, and aims to solve the technical problem that the curing speed of the UV offset printing ink after printing needs to be improved in the prior art.

In order to achieve the above purpose, an embodiment of the present invention provides a fast curing type UV offset printing ink, which includes the following components in percentage by mass:

wherein the initiator comprises 2-isopropyl thioxanthone and 2-phenylbenzyl-2-dimethylamine-1- (4-morpholinebenzyl phenyl) butanone; the auxiliary initiator is ethyl 4-dimethylaminobenzoate; the resin is modified polyester acrylic resin; the monomer is trimethylolpropane triacrylate.

Further, the dispersant is dispersant 24000; the filler is magnesium carbonate.

Further, the fast curing type UV offset ink is a red ink; the red ink comprises the following components in percentage by mass:

further, the fast curing type UV offset ink is a yellow ink; the yellow ink comprises the following components in percentage by mass:

further, the fast curing type UV offset printing ink is blue ink; the blue ink comprises the following components in percentage by mass:

further, the fast curing type UV offset printing ink is black ink; the black ink comprises the following components in percentage by mass:

one or more technical solutions in the fast curing type UV offset printing ink provided by the embodiment of the present invention at least have one of the following technical effects: the fast curing UV offset printing ink is formed by a specific formula proportion, particularly, an initiator formed by 2-isopropyl thioxanthone and 2-benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone and the content of the initiator in 3-10% by mass percentage are adopted, so that the curing speed of the printed ink can be improved, and the speed of 16000 sheets/hour can be reached when the single-color ink is printed through a machine test, and the prior art generally has the speed of 12000 sheets/hour; while the four-color ink can reach 11800 sheets/hour in printing, the prior art generally has only 8200 sheets/hour. Thus, the curing speed of the rapid curing type UV offset printing ink provided by the invention is greatly improved.

Another embodiment of the present invention provides a method for printing with UV offset ink by fast curing, including the steps of:

s100: providing a printing stock, and placing the printing stock on a printing device;

s200: and providing the rapid curing type UV offset printing ink, and printing the rapid curing type UV offset printing ink on the printing stock through the printing equipment.

Further, the printing stock is a 350G silver card, and the 350G silver card comprises the following components in parts by weight:

specifically, the defoaming agent is polydimethyl silicone epoxy with a chemical formula of (C2H6OSi) n; the leveling agent is poly-silicon epoxy with a chemical formula of (R2SiO) x.

Further, the coefficient indexes of the water supply system in the printing apparatus are:

the pH value of the alkalinity is between 4.7 and 5.2;

the conductivity value is between 800US and 1000 US;

the proportion of the water bucket liquid is between 1.5 per mill and 3.5 per mill;

the proportion of the alcohol is between 7 per mill and 12 per mill;

the humidity of the water tank is between 8 and 12 ℃;

the water hardness is between 50PPM and 100 PPM.

Further, the environment control in the printing room where the printing equipment is located is as follows: the temperature is between 23 ℃ and 24 ℃, and the relative humidity is between 60 percent and 70 percent.

One or more technical solutions in the UV offset printing ink fast curing printing method provided by the embodiment of the present invention have at least one of the following technical effects: the UV offset printing ink rapid curing printing method is disclosed. The rapid curing type UV offset printing ink is printed on a printing stock through printing equipment, the curing speed of the printing ink after printing can be improved by utilizing the rapid curing type UV offset printing ink formed according to the specific formula proportion, and through a computer test, the speed of 16000 per hour can be reached when printing single-color printing ink, and the prior art is only 12000 per hour generally; while the four-color ink can reach 11800 sheets/hour in printing, the prior art generally has only 8200 sheets/hour. Therefore, the curing speed of the UV offset printing ink after printing is greatly improved by the rapid curing printing method of the UV offset printing ink.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a flowchart of a method for printing with UV offset ink by fast curing according to example 1 of the present invention.

Detailed Description

The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the embodiments of the present invention, and should not be construed as limiting the invention.

Example 1.

In one embodiment of the invention, the fast curing UV offset printing ink comprises the following components in percentage by mass:

wherein the initiator comprises 2-isopropyl thioxanthone and 2-phenylbenzyl-2-dimethylamine-1- (4-morpholinebenzyl phenyl) butanone; the auxiliary initiator is ethyl 4-dimethylaminobenzoate; the resin is modified polyester acrylic resin; the monomer is trimethylolpropane triacrylate.

In the fast curing UV offset printing ink provided by the embodiment of the invention, the ink is formed according to a specific formula proportion, particularly, the curing speed of the ink after printing can be improved by adopting an initiator formed by 2-isopropyl thioxanthone and 2-benzyl-2-dimethylamine-1- (4-morpholine benzyl phenyl) butanone and the content of the initiator in 3-10% by mass percent, and the speed of 16000 sheets/hour can be reached when the single color ink is printed through an on-machine test, and the prior art generally has the speed of 12000 sheets/hour; while the four-color ink can reach 11800 sheets/hour in printing, the prior art generally has only 8200 sheets/hour. Thus, the curing speed of the rapid curing type UV offset printing ink provided by the invention is greatly improved.

Further, the dispersant is preferably a dispersant 24000; the filler is preferably magnesium carbonate. The dispersing agent 24000 and magnesium carbonate are easy to obtain, low in price and good in quality.

When one embodiment of the fast curing UV offset printing ink is red ink, the red ink comprises the following components in percentage by mass:

as shown in fig. 1, another embodiment of the present invention provides a method for printing with UV offset ink by fast curing, including the following steps:

s100: providing a printing stock, and placing the printing stock on a printing device;

s200: and providing the rapid curing type UV offset printing ink, and printing the rapid curing type UV offset printing ink on the printing stock through the printing equipment.

The invention provides a UV offset printing ink fast curing printing method. The rapid curing type UV offset printing ink is printed on a printing stock through printing equipment, the curing speed of the printing ink after printing can be improved by utilizing the rapid curing type UV offset printing ink formed according to the specific formula proportion, and through a computer test, the speed of 16000 per hour can be reached when printing single-color printing ink, and the prior art is only 12000 per hour generally; while the four-color ink can reach 11800 sheets/hour in printing, the prior art generally has only 8200 sheets/hour. Therefore, the curing speed of the UV offset printing ink after printing is greatly improved by the rapid curing printing method of the UV offset printing ink.

In the embodiment, the influence of the light source on the curing speed is tested, the power of the UV lamp is adjusted on the printing equipment to increase the light intensity, the light intensity is gradually increased from 100W/m to 160W/m, and the optimum curing speed is tested to be 160W/m. That is, the present embodiment further defines the power of the UV lamp on the printing apparatus to be 160W/m, which can further improve the speed of rapid curing of the UV offset ink.

Further, the coefficient indexes of the water supply system in the printing apparatus are:

the pH value of the alkalinity is between 4.7 and 5.2; specifically, the alkalinity pH may be 4.7, 4.9, 5.0, or 5.2.

The conductivity value is between 800US and 1000 US; in particular, the conductivity value may be 800US, 900US or 1000 US.

The proportion of the water bucket liquid is between 1.5 per mill and 3.5 per mill; specifically, the ratio of the fountain solution may be 1.5%, 2%, 2.5%, 3%, or 3.5%.

The proportion of the alcohol is between 7 per mill and 12 per mill; specifically, the alcohol ratio may be 7%, 8%, 9%, 10%, 11%, or 12%.

The humidity of the water tank is between 8 and 12 ℃; specifically, the water tank humidity may be 8 ℃, 9 ℃, 10 ℃, 11 ℃ or 12 ℃.

The water hardness is between 50PPM and 100 PPM. The water hardness can be 50PPM, 60PPM, 70PPM, 80PPM, 90PPM or 100 PPM.

Through the optimal design of the coefficient index of the water supply system, the ink can be further ensured to be rapidly cured after being printed, and the adhesion and the wear resistance of the product are improved.

Further, the environment control in the printing room where the printing equipment is located is as follows: the temperature is between 23 ℃ and 24 ℃, and the relative humidity is between 60 percent and 70 percent. This is advantageous for the curing speed of the ink after printing. Wherein the temperature in the printing room can be 23 ℃ or 24 ℃, and the relative humidity can be 60% or 70%.

In this embodiment, the performance of the printing apparatus is governed by: maintaining the printing machine and ensuring the stability of the machine. The set adjustment parameters of the ink roller are as follows: the pressure to the plate ink roller and the printing plate is 4MM and the pressure to the ink roller is 5MM, the pressure to the ink roller and the ink groove roller is 3MM and the pressure to the ink roller is 3MM, the pressure to the plate water roller and the printing plate is 8MM and the pressure to the water fountain roller is 6MM, and the pressure to the pressurized water and the water roller is 6 MM.

The UV offset printing ink rapid curing printing method of the embodiment can achieve the following advantages: the recycling rate reaches 100%, the adhesive force reaches the test standard, the wear resistance number is more than or equal to 1000 times, the printing speed is improved by 130%, and the price is equal to that of the common UV offset printing ink.

Example 2.

The difference between the embodiment and the embodiment 1 is that when one embodiment of the fast curing type UV offset printing ink is yellow ink, the yellow ink comprises the following components in percentage by mass:

example 3.

The difference between the embodiment and the embodiment 1 is that when one embodiment of the fast curing type UV offset printing ink is a blue ink, the blue ink comprises the following components in percentage by mass:

example 4.

The difference between the embodiment and the embodiment 1 is that when one embodiment of the fast curing type UV offset printing ink is black ink, the mass percentages of the components of the black ink are as follows:

example 5.

The difference between the embodiment and the embodiment 1 is that the printing stock is a 350G silver card, and the 350G silver card comprises the following components in parts by weight:

specifically, the defoaming agent is polydimethyl silicone epoxy with a chemical formula of (C2H6OSi) n; the leveling agent is poly-silicon epoxy with a chemical formula of (R2SiO) x.

In the embodiment, the 350G silver card is used as a printing stock, and the effect of ink printing is best.

Example 6.

The difference between this example and example 5 is that one implementation mode of the 350G silver card is that the components are mixed as follows:

example 7.

The difference between the embodiment and the embodiment 5 is that the other embodiment of the 350G silver card comprises the following components in proportion:

example 8.

The difference between the present embodiment and embodiment 5 is that the 350G silver card has the following components in proportion:

the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.