KR20170021554A

KR20170021554A - ecofriendly clean material for printing machine by using spent cleaning material solution

Info

Publication number: KR20170021554A
Application number: KR1020150116087A
Authority: KR
Inventors: 이대주
Original assignee: 이대주
Priority date: 2015-08-18
Filing date: 2015-08-18
Publication date: 2017-02-28

Abstract

The present invention relates to an eco-friendly cleaning agent for washing a printing machine which is produced by recycling a spent solution discharged after washing the printing machine with a mixture of a cleaning agent including heavy straight run naphtha and water, and more specifically, to an economical eco-friendly cleaning agent for washing a printing machine which maintains cleansing strength that is comparable to conventional cleaning solutions, and yet by recycling spent resources, prevents environmental pollution caused by the discharge of spent cleaning solution, and significantly reduces production cost. The eco-friendly cleaning agent for washing a printing machine according to the present invention is produced by recycling a spent solution discharged after washing the printing machine with a mixture of a cleaning agent including heavy straight run naphtha and water, and comprises: 85-95 wt% of a recycled solution; 2-5 wt% of a surfactant formed by any one among polysiloxanes, amino acids, lanolin and saponin; 2-5 wt% of plant-based oils formed by any one among D-limonene, L-limonene and citronella oils; and 2-5 wt% of a curing agent, wherein the recycled solution is produced by heating a spent cleaning solution containing heavy straight run naphtha, water and sludge under one atmospheric pressure at 100-250C, distilling oils therefrom and cooling the oils to extract a distillate, and mixing the extracted distillate with selected amounts of isopropyl alcohol (IPA), D-limonene and citric acid.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cleaning agent for cleaning an environment-

The present invention relates to a detergent for cleaning an eco-friendly printing press, which uses a waste cleaning liquid prepared by mixing ink with a cleaning agent for cleaning a printing machine, which contains heavy naphtha, and recycles waste ink discharged from the ink after remaining on the printing machine. In detail, the cleaning power can be prevented from environmental pollution due to the discharge of the waste cleaning liquid while maintaining almost the same as that of the conventional cleaning liquid, and an eco-friendly printing press using an economical waste cleaning agent capable of significantly reducing the production cost by recycling waste resources And a cleaning agent.

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. In addition, the cleaning head 5 is provided with a fluid containing solid particles which can be fluidized, and a few small nozzles for supplying compressed air to the cylinder surface 16 to reliably clean the cylinder surface 16 do. 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 cleaning agents for cleaning printing cylinders include thinner, a mixture of petroleum and light oil, or toluene or a solvent. Conventional cleaning agents for cleaning the printing machine as described above are used for cleaning 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. .

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide an ink jet recording head capable of cleaning ink and foreign matters remained in a printing cylinder with the same cleaning force as a new cleaning liquid,

In addition, it is possible to reduce the generation of odor, thereby enabling the operator to handle the cleaning agent in a safer and more comfortable environment, to significantly reduce the production cost by using the recycled raw material, and to prevent environmental pollution caused by the leakage of the waste cleaning agent do.

In order to solve the above-described problems, the present invention provides an eco-friendly printing machine using a waste cleaning liquid prepared by mixing inkjet ink for cleaning a printing machine cleaner containing heavy naphtha with water, In the detergent for cleaning, a detergent waste liquid for cleaning a printing machine including heavy naphtha, water and sludge is heated to 100 ° C to 250 ° C under 1 atmospheric pressure to cool distilled oil to extract the purified liquid, 85 to 95% by weight of a regenerated raw material liquid obtained by mixing predetermined amounts of IPA (IsoPropyl Alcohol), D-limonene and citric acid, respectively; 2 to 5% by weight of a surfactant formed from any one of polysiloxane-based, amino-based, lanolin and saponin; 2 to 5% by weight of vegetable oils formed from any one of D-limonene, L-limonene and citronella; And 2 to 5% by weight of a curing agent; and a cleaning agent for cleaning an environmentally friendly printing machine using the waste cleaning solution.

The cleaner for cleaning an environmentally friendly printing machine using the waste cleaning liquid according to the present invention can clean ink and foreign substances remained in the printing cylinder with the same cleaning force as the new cleaning liquid and can suppress odor generation, The detergent can be handled, the risk of explosion can be lowered, the transportation and storage of the detergent can be facilitated,

Particularly, the use of the recycled raw material can remarkably reduce the production cost and prevent environmental pollution caused by the leakage of the waste cleaning agent.

1 is a schematic view showing an automatic cleaning apparatus for a conventional printing cylinder;
FIG. 2 is a test report on breaking point of a cleaning liquid used for cleaning a conventional printing cylinder; FIG.
3 is a test report on aniline point showing ink solubility of a cleaning liquid used for washing a conventional printing cylinder; And
4 is a test report of an aniline point showing breaking point and ink solubility of a cleaning agent for cleaning an environmentally friendly printing machine using a waste cleaning liquid according to the present invention.

Hereinafter, embodiments of the present invention in which the above object can be specifically realized will be described with reference to the accompanying drawings. In describing the embodiments, the same names are denoted by the same reference numerals, and further description thereof will be omitted below.

FIG. 3 is a test report on the aniline point indicating the ink solubility of the cleaning liquid used for washing the conventional printing cylinder, and FIG. 4 is a graph showing the test result As a test report on the aniline point indicating the breaking point and the ink solubility of the cleaning agent for washing an environmentally friendly printing machine using the waste cleaning liquid according to the invention,

The cleaning agent for washing an environmentally friendly printing machine using the waste cleaning solution according to the present invention is a cleaning agent for cleaning an environmentally friendly printing machine, which comprises cleaning a residual ink in a printing machine by mixing a cleaning agent for cleaning the printing machine with water, refining the waste liquid, And 2 to 5% by weight of a surfactant formed of any one of polysiloxane-based, amino-acid-based, lanolin and saponin, and vegetable oils 2 to 5 wt%, and 2 to 5 wt% of a curing agent.

In general, most of conventional cleaning agents for cleaning a printing machine including heavy naphtha for improving cleaning ability are mixed with water in a predetermined amount to clean ink remaining in the printing machine, and a cleaner for washing an environmentally friendly printing machine using a waste cleaning solution according to the present invention Collects and collects the detergent waste liquid discharged after cleaning, and the collected detergent waste liquid contains not only heavy naphtha but also a large amount of sludge such as moisture and ink residue, so that a reprocessing process is performed to recycle it. That is, a cleaning agent waste liquid containing a piece of paper or residue is first passed through a screen of a predetermined mesh standard to remove floating matters such as pieces of paper, and the waste liquid of the cleaning agent from which suspended matters have been removed is gradually And the distillate is cooled to extract the purified liquid.

Most of the purified liquid extracted through the distillation process is composed of heavy naphtha and some moisture is contained in the distillation process. When the curing agent is added, clouding occurs and mixing with other mixture may be interrupted, In the cleaner for washing an environmentally friendly printing machine utilizing the waste cleaning solution according to the present invention, a predetermined amount of IPA (IsoPropyl Alcohol) is mixed and hydrophilized.

In addition, when purifying the detergent waste solution, a specific regenerating odor is generated. In order to reduce and reduce the amount of D-limonene, a certain amount of the regenerant smell is mixed with the alkalinity of pH 9.5, In order to prevent rust from storing in a storage can for a long period of storage, a predetermined amount of citric acid is added to neutralize the final recycled raw material liquid.

When the mixing amount of the regenerated raw material liquid prepared through the above-described process is less than 85% by weight, the ink, foreign matter, and the like on the printing cylinder are not melted well and the washing power is lowered. On the other hand, When the mixing amount is more than 94% by weight, the cleaning power is improved, but the risk of explosion increases due to an increase in the rate of occurrence of vapor, and there is an inconvenience to pay much attention to transportation and storage.

Any one selected from among ether compounds, ester compounds, siloxane compounds and ketone compounds may be further added so as to reduce the mixing amount of the raw material for regeneration. The ether compound has a cleansing power for dissolving a staple or an ink, It has a molecular structure of the same bent type and has a polarity so that it has a high breaking point. Therefore, it is less stable than a non-polar petroleum compound and has less reactivity and is very stable. The ester compound has not only a washing power for dissolving a staple powder or an ink but also a perfume and when mixed with an ester compound to form a detergent, the mixing amount of the vegetable oil mainly serving as a perfume can be reduced, and the manufacturing cost of the detergent can be lowered . In addition, the siloxane compound has an excellent heat resistance as well as a cleaning power for dissolving and removing stains and ink on a printing cylinder. The ketone compound also has a cleaning power for dissolving and removing stains or ink on a printing cylinder, In this good washing apparatus, there is an advantage that it can be mixed well with the water sprayed together with the cleaning agent and uniformly dispersed in the printing cylinder to remove minute residual stains and foreign substances.

Addition of any one of the ether compound, the ester compound, the siloxane compound and the ketone compound is further added to reduce the mixing amount of the raw material for regeneration, but the regenerated utilization rate of the regenerated raw material liquid is lowered The manufacturing cost is increased, and there is a problem of environmental pollution.

The surfactant is a biocompatible compound having both a hydrophilic group and a hydrophobic group in the molecule and has an active function at the surface or interface so that the cleaning agent is mixed with the water jetted from the printing cylinder cleaning device and the cleaning agent, Adsorbed on the surface or interface of a stain or organic ink on the printing cylinder, thereby significantly deteriorating the surface tension and removing the ink from the printing cylinder, thereby improving the cleaning ability of the cleaning agent. In addition, the breaking point of the detergent can be increased to reduce the generation of vapor and reduce the risk of explosion due to excessive occurrence of vapor.

The polysiloxane-based surfactant used as the surfactant is a silicone surfactant having excellent resistance and durability at high temperature, excellent chemical stability and low explosion risk, and is excellent in foamability and bubble-inhibiting ability. The amino acid system is excellent in foamability, bubble restraining ability and cleaning power with amino acid as a basic skeleton, and when it touches the skin of the human body, irritation is weak, and skin damage of the worker can be minimized. Lanolin and saponin are natural surfactants that are not petroleum-based chemical surfactants and have a cleaning power. They can be biodegraded as they are in the water at the time of release, so that they can be protected without destroying the natural environment.

When the mixing amount of the surfactant is less than 2% by weight, the detergency is lowered, the remaining ink or stains remaining in the printing cylinder can not be removed easily, and the water and the cleaning agent are not mixed well during the self- If the mixing amount is more than 5% by weight, the cleaning and washing power is improved. However, since the viscosity of the cleaning agent is increased and the machine operation of the washing machine can not proceed smoothly, or the evaporation force is decreased after washing, There is a problem.

Vegetable oils are used to weaken the volatile odor peculiar to petroleum compounds, which occupy most of the detergent for cleaning the printing machine, and to improve the detergency of the detergent and to provide psychological stability to the operator who treats the detergent as a fragrance And to improve the environment. D-limonene and L-limonene, which function as vegetable oils, are colorless liquid fragrances extracted from the leaves of citrus peels and other plants, and play a role of giving a unique orange flavor to the detergent for cleaning the printing machine according to the present invention. In addition, citronella oil is obtained by extracting volatile aromatic oil from the citronella leaves through steam distillation.

When the blending amount of the vegetable oil is less than 2% by weight, the volatile odor peculiar to the petroleum compound can not be weakened, and the fragrance is insufficient to function as a perfume. The detergency is weakened and the mixing amount is more than 5 wt% There is a problem that the price of the vegetable oil is high and the manufacturing cost of the cleaning agent for washing the printing plate is increased.

The curing agent is used for the purpose of allowing the cleaning agent for washing the printing machine according to the present invention to be sprayed on the surface of the printing cylinder and to remain on the surface of the cylinder for a predetermined time without directly flowing along the surface thereof, And shorten the drying time of the water sprayed together with the cleaning agent, thereby shortening the cleaning time of the printing cylinder through the automatic cleaning apparatus.

When the mixing amount of the curing agent is lower than 2% by weight, there is a problem that when the cleaning agent is sprayed to the printing cylinder together with water through the automatic cleaning device, the cleaning agent does not stay on the surface of the printing cylinder, When the mixing amount is more than 5% by weight, there is a problem of raising the manufacturing cost of the cleaning agent for cleaning the printing press.

As shown in FIG. 2, FIG. 3 and FIG. 4, the detergent for cleaning the environmentally friendly printing machine using the waste cleaning solution according to the present invention has a low boiling point and a low generation rate of the detergent, And can be easily stored. An ink solubility can be known through an aniline point which is the lowest temperature at which hydrocarbon completely dissolves with aniline of the same volume. Generally, the lower the aniline point, the better the ink solubility. It can be seen that the aniline point of the new semen and the cleaner for cleaning the environmentally friendly printing machine utilizing the waste cleaning solution according to the present invention are the same and the ink or foreign matter remaining in the printing cylinder can be cleanly cleaned with the same cleaning power as the new cleaning liquid, The detergent prevents the generation of bad odors during the cleaning process, thus providing a safe and pleasant environment for the operator. The cleaner is able to handle.

It will be apparent to those skilled in the art that, although several embodiments above have been illustrated by way of example, the present invention may be embodied in other forms without departing from its spirit and scope.

Accordingly, the above-described embodiments are to be considered illustrative and not restrictive, and all embodiments within the scope of the appended claims and their equivalents are intended to be included within the scope of the present invention.

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

A cleaner for cleaning an eco-friendly printing press, which utilizes a waste cleaning liquid prepared by mixing a cleaning agent for cleaning a printing machine including heavy naphtha with water to wash ink remaining in the printing machine and recycling the waste liquid to be discharged,
A waste liquid for washing cleaning of a printing machine including heavy naphtha, moisture and sludge is heated to 100 ° C to 250 ° C under 1 atm to cool distilled oil to extract the purified liquid, and IPA (IsoPropyl Alcohol) 85 to 95% by weight of a regenerated raw material liquid obtained by mixing predetermined amounts of D-limonene and citric acid, respectively;
2 to 5% by weight of a surfactant formed from any one of polysiloxane-based, amino-based, lanolin and saponin;
2 to 5% by weight of vegetable oils formed from any one of D-limonene, L-limonene and citronella;
And 2 to 5% by weight of a curing agent; and a cleaning agent for cleaning an eco-friendly printing press utilizing the waste cleaning solution.