KR101976790B1 - Cleaning agent for cleaning ink and Manufacturing method thereof - Google Patents

Abstract

The present invention relates to an ink cleaning agent, capable of effectively cleaning an ink stained on a printer, and a preparing method thereof. The ink cleaning agent of the present invention comprises kerosene, a soap mixture, oleic acid, stearic acid, ammonia, caustic soda, and water.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning agent for cleaning ink,

The present invention relates to a detergent for cleaning ink adhering (or contaminated) to a printing apparatus, such as a roller for a printing press, and a method for producing an ink cleaning detergent.

A conventional flexible printing machine that prints on a carrier of a conventional paper or plastic film or metal film comprises a first cylinder in which the web of the carrier runs around, A printing cylinder, and a second cylinder for transferring the ink to the printing cylinder. In the conventional printing press constructed as described above, when the printing process is performed for a predetermined time, the printing quality is usually reduced because the printing cylinder is contaminated with dust, fibers, or other foreign matter falling off the paper or plastic film or web of the metal film If the quality of the printing is deteriorated due to contamination of the printing cylinder, it should be cleaned with a cleaning agent for cleaning the printing machine.

1, a general printing machine includes a printing cylinder 1 having a plate 2, and the printing cylinder 1 is mounted on a shaft 3, As shown in Fig. The cleaning head 5 is provided on the upper side of the printing cylinder 1 to move the cleaning head 5. The cleaning head 5 is supported by a band 6 driven by a motor 7, And the motor 7 is located at one end 8 of the moving rail 4 and the band 6 is guided by a pulley 9 located at the other end 10 of the moving rail 4 . The cleaning head 5 is formed to be fixed to the band 6 by means of a slide 11 which is relatively movable with respect to the moving rail 4.

A cleaning head 5 is mounted on the slide 11 and three tubes 12, 13 and 14 are connected to the cleaning head 5 and two thin tubes 12 and 13 Is used to supply compressed air from an external pressure air source, and the cleaning agent for cleaning the printing press is supplied to the cleaning head 5 through an atmosphere chamber 15 in which a cleaning agent and water are mixed therein. Another thick tube 14 removes impurity particles or other material loosely adhering to the cylinder surface while the cylinder surface is exposed to a vacuum supplied from an external vacuum source. Further, the cleaning head 5 is provided with a < RTI ID = 0.0 >

A small number of small nozzles for supplying the fluid containing the particles and the compressed air to the cylinder surface 16 are provided so that the cylinder surface 16 can be surely cleaned. The rotation direction r of the cylinder is adapted to rotate toward the front face 17 which is the opposite side of the cleaning head 5 mounted on the slide 11. In this way, cleaning is carried out by mixing the cleaning agent for cleaning the printing press and water, and the suction action of the vacuum is immediately applied to the cylinder surface 16, and the moving rail 4 is rotated The cleaning head 5 is moved back and forth so that the entire cylinder is cleaned.

As described above, conventional cleaners used for cleaning the printing apparatus include thinner, a mixture of petroleum and light oil, or toluene or a solvent, It is inconvenient to store the waste liquid and cause strong odor due to the generation of strong odor. It causes dizziness when exposed for a long time. It takes extra treatment cost for disposal of waste liquid and contains harmful components such as toluene. .

Korean Patent Publication No. 10-2017-0021554 (published Feb. 2017, 2017).

Disclosure of the Invention The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide an ink cleaning detergent which is excellent in detergency, Thereby completing the invention. That is, an object of the present invention is to provide a detergent for cleaning ink and a method of manufacturing the same.

In order to solve the above problems, the present invention relates to a detergent for cleaning an ink, which comprises a base oil, a soap mixture, oleic acid, stearic acid, ammonia, caustic soda and water.

In addition, the present invention relates to a method for producing the detergent for ink cleaning, which comprises mixing soap water at 70 to 80 ° C. in a mixture of water and ammonia water, stirring the mixture at 34 to 35 ° C., Step 1 to manufacture; Adding the first soap mixture to a mixing container, adding black oil, stearic acid, and oleic acid, and heating the mixture to 60 to 62 ° C with stirring to produce a second soap mixture; Adding milky oil to the second soap mixture, stirring the mixture until the temperature reaches 34 to 35 DEG C, and cooling; And a fourth step of rotating the cooled second soap mixture solution at a high speed to remove soapy water in the bath to obtain a gel-state detergent.

It is another object of the present invention to provide a method for efficiently cleaning contaminated ink in a printing apparatus using the cleaning agent for cleaning ink.

INDUSTRIAL APPLICABILITY The cleaning agent for ink cleaning of the present invention has an excellent cleaning power, simplifies the manufacturing process, economies of manufacturing cost, and uses a small amount, so that contaminated ink can be effectively cleaned in the printing apparatus.

1 is a schematic view showing an automatic cleaning apparatus for a conventional printing cylinder.

Hereinafter, the present invention will be described in more detail.

The cleaning agents for ink cleaning of the present invention include white spirit oil, soap mixtures, oleic acid, stearic acid, ammonia water, caustic soda, and water. The cleaning agent for ink cleaning of the present invention is a gel-type cleaning agent.

In the present invention, the saccharide oil serves to clean the bleach ink, and its content is 30 to 40% by weight, preferably 32 to 38% by weight, more preferably 33 to 37.5% by weight in the total weight of the cleaning agent It is good to use. At this time, if the content of the black oil is less than 30% by weight, there may be a problem of deteriorating the detergency, and if it exceeds 40% by weight, there may be a problem of viscosity and difficulty in washing.

Next, the soap mixture among the detergent components serves to give a main washing function to the ink, and the content thereof is preferably 2.5 to 5% by weight, more preferably 2.5 to 4.5% by weight, Is preferably 2.5 to 4% by weight. If the content of the soap mixture is less than 2.5% by weight, there may be a problem of deteriorating the cleaning power. If the content of the soap mixture exceeds 5% by weight, it may be troublesome to work on the cleaning operation site such as the ink roller. It is good to do.

Preferably, the soap mixture comprises 0.05 to 0.5% by weight of silicate, 2 to 5% by weight of glycerin, 0.1 to 1.5% by weight of light bleaching agent and a balance of pure soap More preferably a mixture comprising 0.1 to 0.35% by weight of silicate, 2.5 to 4% by weight of glycerin and a balance of pure soap powder.

Among the soap mixture components, the net soap powder includes an oil containing C15-C20 higher fatty acid oil and waste oil, a sulfate compound represented by the following formula (1), caustic soda, and water.

[Chemical Formula 1]

In formula (1), R ₁ is a linear alkyl group of C 5 to C 10 or a branched alkyl group of C 3 to C 10, preferably R ₁ is a branched alkyl group of C 4 to C 9, more preferably a branched alkyl group of C 3 to C 4 to be. R ₂ is a straight chain alkylene group of C ₂ to C 4, preferably a straight chain alkylene group of C 2 to C 3. The above M is a monoethanolamine group, a diethanolamine group or a triethanolamine group, preferably a diethanolamine group or a triethanolamine group, more preferably a triethanolamine group. Preferably, n is an integer of 1 to 3, and more preferably n is an integer of 1 to 2.

The method for preparing the net soap powder comprises mixing C15 to C20 higher fatty acid oils and waste oils at a weight ratio of 1: 1.2 to 2, preferably C15 to C18 higher fatty acid oils and waste oils at a weight ratio of 1: 1.3 to 1.8, More preferably, the oil is prepared by mixing C16-C17 higher fatty acid oil and waste oil at a weight ratio of 1: 1.3-1.6.

Next, 25 to 30 parts by weight of caustic soda, preferably 28 to 30 parts by weight of caustic soda, are mixed and stirred at 100 ° C. to 20 parts by weight of the oil at 20 ° C. to 30 ° C., And preferably 3 to 5 parts by weight of a sulfate compound are added and sufficiently stirred, followed by heating and stirring at a temperature of 70 ° C to 80 ° C for 15 minutes to 20 minutes. Then, it is cooled and solidified, and then pulverized and powdered.

Here, the sulfate compound is used to reduce the kraft point of the pure soap powder, increase the solubility of the system, and increase the transparency of the net soap at low temperatures.

If the amount of the silicate is less than 0.05% by weight, the silicate may have a problem of hardening. When the amount of the silicate exceeds 2% by weight, the silicate may have a problem that the layer may be separated. It is good. If the amount of the glycerin used is less than 2% by weight, the glycerin may be hardened. If the amount of the glycerin is more than 5% by weight, the mixture layer may be separated.

The oleic acid serves as a solvent. The content of the oleic acid in the composition is 0.3 to 1.5% by weight, preferably 0.3 to 1.0% by weight, more preferably 0.4 to 0.8% by weight %. If the content is less than 0.3% by weight, the amount thereof used is too small, so that the effect of mixing the black oil and the suds may not be obtained. If the content is more than 1.5% by weight, It is recommended to use it within the range.

The stearic acid is added to secure an ideal viscosity. The content of the stearic acid is 0.1 to 1% by weight, preferably 0.1 to 0.8% by weight, more preferably 0.2 to 0.6% by weight %. If the content is less than 0.1% by weight, the amount thereof used is so small that the viscosity is weakened and the effect of washing may not be obtained. If the content is more than 1% by weight, It is recommended to use within the above range.

In the detergent composition for ink cleaning according to the present invention, the aqueous ammonia serves as a neutralizer, and its content in the detergent is 0.1 to 1% by weight, preferably 0.3 to 0.8% by weight, more preferably 0.3 to 0.7% by weight, If the content is less than 0.1% by weight, the effect of neutralizing agent may not be obtained. If it is used in excess of 1% by weight, there may be a problem of serving as a neutralizing agent. It is good.

Next, the caustic soda of the ink cleaning detergent component of the present invention is added to remove impurities (ink), and its content in the composition is 0.05 to 1% by weight, preferably 0.08 to 0.9% by weight, May be used in an amount of from 0.1 to 0.6% by weight. If the content is less than 0.05% by weight, the amount of the ink used may be too small to exhibit the effect of decomposing the ink. If the content exceeds 1% by weight, So it is recommended to use it within the above range.

The amount of water used in the detergent component is the remaining amount of the total weight of the composition excluding white hard oil, soap mixture, oleic acid, stearic acid, ammonia and caustic soda.

The method for manufacturing the ink detergent of the present invention described above will be described in detail as follows.

Mixing soap water at 70 to 80 ° C in a mixture of water and ammonia water, and stirring the mixture at 34 to 35 ° C to prepare a first soap mixture; A second step of adding a base oil, stearic acid and oleic acid to the first soap mixture solution and then heating the mixture to 60 to 62 ° C with stirring to prepare a second soap mixture; Stirring the mixture of the second soap until the temperature reaches 34 to 35 DEG C, and cooling; And cooling the second soap mixture into a mixing container and then rotating the mixing container at a high speed to remove soap and water in the bath to obtain a gel detergent, Can be manufactured.

The soap of the first stage may be prepared by heating the mixture obtained by mixing the soap mixture, water and caustic soda to 70 to 80 캜.

The ink cleaning detergent of the present invention prepared by the above composition and method is suitable for cleaning ink adhered to a printing apparatus (for example, a roller for a printing machine and / or an ink cleaning). The ink may be a metal ink (lithographic ink).

Hereinafter, the present invention will be described in more detail with reference to examples. However, the scope of the present invention should not be construed to limit the scope of the present invention by the following examples, but the following examples are given to aid understanding of the present invention.

[ Example ]

Preparation Example  1: Manufacture of a soap mixture

(One) Net soap  Preparation of powder

Palmitic acid, a higher fatty acid oil of C16, and waste cooking oil, a waste oil, were mixed at a weight ratio of 1: 1.35 to prepare an oil.

Subsequently, 28.5 parts by weight of caustic soda water at a concentration of 98% by volume was added to 100 parts by weight of the oil at 24 DEG C to 25 DEG C, and the mixture was slowly stirred for 5 minutes. Next, 3.8 parts by weight of the sulfate compound represented by the following formula (1-1) was added thereto, followed by slow stirring for 10 minutes.

Next, the mixture was heated from 74 ° C to 75 ° C, stirred continuously for 18 minutes while maintaining the temperature, and then cooled to obtain a solidified soap.

Next, the net soap was pulverized to prepare a net soap powder.

[Formula 1-1]

R ₁ is a straight chain alkyl group of C 8, R ₂ is a linear alkylene group of C ₂ , M is a triethanolamine group, and n is an integer of 2 to 3.

(2) Production of soap mixtures

0.32% by weight of silicate, 3.8% by weight of glycerin and the remaining amount of the pure soap powder were mixed and stirred to prepare a soap mixture.

Example  1: Preparation of cleaning agent for ink cleaning

35.7 g of soap mixture 4 L of water and 18 g of caustic soda were heated to 75-77 占 폚 to prepare soapy water. Separately, 6 liters of water and 12 g of ammonia water were added to the hot water bottle, and the mixture was stirred to mix well.

Next, the mixed solution was mixed with soap water at 75 to 77 ° C, and then stirred until the temperature reached 35 ° C to prepare a first soap mixture.

The mixture of the first soap and the first soap mixture was added to the mixture, 0.5 g of stearic acid, 18 g of oleic acid was added to 2 l of white spirit, and the mixture was heated to 60 ° C with stirring. 4ℓ of black soybean oil was further added thereto, 2 soap mixture was prepared.

Next, the compounding column containing the second soap mixture solution was rotated at a high speed using a stirrer to remove soapy water from the hot water bath to remove it.

When the suds of the bath was no longer generated, the rotation of the throat was stopped to prepare a viscous white gel type cleaning agent for ink cleaning.

Then, the cleaning agent for ink cleaning was immersed in a prepared packaging can (CAN), and then the lid was closed to prevent contact with outside air.

Example  2 ~ Example  6 and Comparative Example  1 to 8

Examples 2 to 6 and Comparative Examples 1 to 8 were carried out in the same manner as in Example 1, except that the detergents for ink cleaning were prepared so as to have composition ratios as shown in Tables 1 and 2 below.

division
(weight%) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Baek Yul 35 38.5 31.7 35 35 35 Soap mixture 3 3 3 4.3 2.7 3 Oleic acid 0.5 0.5 0.5 0.5 0.5 0.3 Stearic acid 0.5 0.5 0.5 0.5 0.5 0.8 ammonia 0.5 0.5 0.5 0.5 0.5 0.7 Caustic soda 0.5 0.5 0.5 0.5 0.5 0.8 water 100% remaining balance

division Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Baek Yul 43 28 35 35 35 35 35 35 Soap mixture 3 3 6 1.9 3 3 3 3 Oleic acid 0.5 0.5 0.5 0.5 - 1.0 0.5 0.5 Stearic acid 0.5 0.5 0.5 0.5 1.0 - 0.5 0.5 ammonia 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Caustic soda 0.5 0.5 0.5 0.5 0.5 0.5 0.01 1.5 water 100% remaining balance

Experimental Example  1: Experiment to measure ink cleaning force of cleaning agent for ink cleaning

The ink washing power of the cleaning agent for the ink was measured by the following method, and the results are shown in Table 3 below.

At this time, the ink is a metallic ink (manufacturer: Korean ink). The aniline point indicating the ink solubility of the cleaning agent was measured according to the method of KS M 5000: 2014, and the breaking point of the cleaning agent was measured according to KS M 1071-2: 2007.

division Aniline point (占 폚) Cleanser breaking point (℃) Example 1 65.6 165.3 Example 2 66.8 167.2 Example 3 63.2 162.8 Example 4 68.2 165.4 Example 5 63.8 165.0 Example 6 67.6 169.0 Comparative Example 1 66.9 161.0 Comparative Example 2 58.7 170.3 Comparative Example 3 70.5 165.9 Comparative Example 4 56.7 165.2 Comparative Example 5 Not measurable Not measurable Comparative Example 6 Not measurable Not measurable Comparative Example 7 55.2 164.2 Comparative Example 8 68.8 166.1

The results of the experiment of Table 1 are shown in Examples 1 to 6 of the present invention. All of the aniline points have a melting point of 60 ° C or higher, preferably 63 ° C or higher and a breaking point of 160 ° C or higher.

However, in Comparative Example 1 in which the content of the black oil was more than 40% by weight, there was almost no difference in aniline point as compared with Example 2, and there was a problem that the viscosity was low and the usability was poor. It was confirmed that the aniline point of the Comparative Example 2 in which the content of the black oil was less than 30% by weight had a problem that the aniline point was less than 60 ° C and decreased sharply as compared with Example 3.

In Comparative Example 3 containing more than 5% by weight of the soap mixture, the aniline point was higher than that of Example 4, so that the ink cleaning performance was excellent. However, Comparative Example 4 in which the soap mixture was used in an amount of less than 2.5% by weight had a problem that the aniline point was much lower than that in Example 5 and the ink detergency was lowered.

In the case of Comparative Example 5 in which oleic acid was used in an amount of only 0.1 wt%, there was a problem that the gel was not formed well due to poor mixing of black spirit and soapy water. Also, in Comparative Example 6 in which stearic acid was not used, there was also a problem that the viscosity of the cleaning agent could not be secured and the gel could not be formed.

In the case of Comparative Example 7 containing only 0.01% by weight of caustic soda, the aniline point was too low and there was a problem that the decomposition ability of the ink decomposition was very low. In the case of Comparative Example 8 in which caustic soda was used in an amount exceeding 1% by weight, the aniline point was high and the decomposition ability of the ink was excellent. However, there was a problem that it rapidly and easily corrodes when prolonged contact with outside air.

1: printing cylinder 2: plate
3: shaft 4: moving rail
5: Cleaning head 6: Band
7: Motor 8: One end of the moving rail
9: pulley 10: other end of moving rail
11: Slide 12, 13, 14: Tubes
15: Waiting chamber 16: Cylinder surface
17: Wash head front

Claims (9)

Including gelatine, buoyancy oil, soap mixtures, oleic acid, stearic acid, ammonia water, caustic soda and water,
Water containing 30 to 40% by weight of black soybean oil, 2.5 to 5% by weight of a soap mixture, 0.3 to 1.5% by weight of oleic acid, 0.1 to 1% by weight of stearic acid, 0.1 to 1% by weight of ammonia, 0.05 to 1% by weight of caustic soda, Wherein the cleaning liquid is an ink.
delete The method according to claim 1,
Wherein the soap mixture is a mixture of pure soap powder, silicate and glycerin.
The method of claim 3,
0.05 to 0.5% by weight of silicate, 2 to 5% by weight of glycerin and a balance of pure soap powder.
5. The method of claim 4, wherein the net soap powder comprises
An oil containing a higher fatty acid C15 to C20 fatty acid and a waste oil, a sulfate compound represented by the following formula (1), caustic soda, and water;
[Chemical Formula 1]

Wherein R ₁ is a straight chain alkyl group of C 5 to C 10 or a branched alkyl group of C 3 to C 10, R ₂ is a straight chain alkylene group of C ₂ to C 4, M is a monoethanolamine group, a diethanolamine group, or triethanol An amine group, and n is an integer of 1 to 5.
6. The method of claim 5,
Wherein the oil comprises a C15 to C20 higher fatty acid oil and a waste oil in a weight ratio of 1: 0.5 to 1: 1.
6. The method of claim 5,
Wherein the net soap powder comprises 2 to 6 parts by weight of the sulfate compound and 25 to 30 parts by weight of a caustic soda water based on 100 parts by weight of the oil.
delete delete

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