CN110684394A - Preparation method of digital printing nozzle cleaning fluid - Google Patents
Preparation method of digital printing nozzle cleaning fluid Download PDFInfo
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- CN110684394A CN110684394A CN201911178665.0A CN201911178665A CN110684394A CN 110684394 A CN110684394 A CN 110684394A CN 201911178665 A CN201911178665 A CN 201911178665A CN 110684394 A CN110684394 A CN 110684394A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D9/00—Chemical paint or ink removers
- C09D9/005—Chemical paint or ink removers containing organic solvents
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Abstract
The invention belongs to the technical field of digital printing, and particularly relates to a preparation method of a cleaning solution for a digital printing nozzle, which comprises the following steps: (1) the components in parts by weight are as follows: 5-20 parts of a humectant, 1-5 parts of a cleaning agent, 0.1-1 part of an acid-base regulator, 0.1-1 part of a surfactant, 0.1-1 part of a bactericide and 72-93.7 parts of deionized water are mixed, stirred for 30-90 min to obtain a mixed solution, and continuously kept standing for 12-24 h; (2) and (3) filtering the mixed liquid obtained in the step (1) by using a 0.22-micron high-precision polyether sulfone filter element with a spongy sublayer large cavity structure under the pressure of 0.2-0.4 MPa to obtain the cleaning liquid for the digital printing spray head. The preparation method has the effect of thoroughly removing the gel in the cleaning solution, ensures the purity of the cleaning solution, improves the cleaning effect and efficiency of the cleaning solution, and prevents the blocked spray head from being further damaged due to the existence of the gel in the process of cleaning the spray head by using the cleaning solution.
Description
Technical Field
The invention belongs to the technical field of digital printing, and particularly relates to a preparation method of a cleaning solution for a digital printing nozzle.
Background
In recent years, digital printing technology has been rapidly developed to meet the market demands of small batch, diversified variety and rapid delivery of printing orders. The active and acid dye ink is one of the most commonly used ink varieties in the textile digital printing technology, but because the ink is influenced by the environment and the ink property in the using process, the dye is easy to separate out and gather, and meanwhile, the diameter of a nozzle of an industrial nozzle used is only dozens of micrometers, the gathered dye is easy to block the nozzle, so that the printing quality is reduced and the nozzle is damaged. Therefore, once the nozzle is blocked, it is important to clean the nozzle in time by using the cleaning solution with high purity and good effect.
The components of the cleaning solution generally contain a humectant, a cleaning agent, a surfactant, an acid-base regulator, a bactericide and deionized water, and gel is easily generated due to insufficient purity of raw materials and interaction among the components in the processes of mixing, stirring and standing, so that if the gel is not completely removed, the blocked spray head is easily damaged in the process of cleaning the spray head by using the cleaning solution. However, in the conventional preparation method of the cleaning solution, a common filter element is often used for filtering the cleaning solution, for example, in patent of invention CN 103395292B, 1 micron, 0.45 micron and 0.22 micron filter membranes are reported to be used for filtering the nozzle cleaning solution, which cannot completely remove the gel in the cleaning solution, resulting in insufficient purity of the cleaning solution and poor cleaning effect.
Therefore, it is a urgent need in the technical field of cleaning solutions to provide a method for preparing a cleaning solution with a gel removal function to ensure the purity and cleaning efficiency of the cleaning solution.
Disclosure of Invention
The invention aims to provide a preparation method of a digital printing spray head cleaning solution, which is used for removing gel in the cleaning solution and preventing the blocked spray head from being further damaged due to the existence of the gel in the process of cleaning the spray head by using the cleaning solution.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a digital printing nozzle cleaning solution comprises the following steps:
(1) the components in parts by weight are as follows: mixing 5-20 parts of humectant, 1-5 parts of cleaning agent, 0.1-1 part of acid-base regulator, 0.1-1 part of surfactant, 0.1-1 part of bactericide and 72-93.7 parts of deionized water, stirring for 30-90 min to obtain a mixed solution, and continuously standing for 12-24 h;
(2) and (3) filtering the mixed liquid obtained in the step (1) by using a 0.22-micron high-precision polyether sulfone filter element with a spongy sublayer large cavity structure under the pressure of 0.2-0.4 MPa to obtain the cleaning liquid for the digital printing spray head.
Preferably, the humectant is one or more of ethylene glycol, diethylene glycol, triethylene glycol, glycerol, 1, 2-propylene glycol, 1, 3-butylene glycol, polyethylene glycol 200, polyethylene glycol 400, sorbitol and cyclohexanol.
Preferably, the cleaning agent is one or more of 2-pyrrolidone, N-methyl-pyrrolidone, urea, butyl carbitol, carbitol and carbitol.
Preferably, the acid-base regulator is one or more of citric acid, sodium citrate, acetic acid, sodium acetate, monoethanolamine, diethanolamine and triethanolamine.
Preferably, the surfactant is one or more of Surfynol 104, Surfynol 420, Surfynol 465, Surfynol485, Dynol 604, Dynol 810 and Dynol 607.
Preferably, the bactericide is one or more of benzoic acid, sodium benzoate, Proxel GXL and isothiazolinone.
Preferably, the conductivity of the deionized water is less than 1.0. mu.S/cm.
Advantageous effects
The invention discloses a preparation method of a digital printing nozzle cleaning solution. According to the invention, a 0.22-micron high-precision polyethersulfone filter element with a spongy sublayer large cavity structure is selected for filtering under the pressure of 0.2-0.4 MPa, the molecular structure of the filter element mainly comprises a sulfone group, an ether group and a phenylene group, and in the process of filtering cleaning liquid, the sulfone group and the phenylene group can effectively adsorb and intercept gel in the cleaning liquid, so that the removal effect is thorough, the purity of the cleaning liquid is ensured, the cleaning effect and efficiency of the cleaning liquid are improved, and further damage to a blocked spray head due to the existence of the gel in the process of cleaning the spray head by using the cleaning liquid is prevented.
Drawings
FIG. 1: comparing the situations of residual gel and impurities on the surface of the filter membrane when the cleaning solution prepared by the invention is filtered by using the filter membrane with 0.22 mu m with the commercial cleaning solution;
FIG. 2: the cleaning solution and the commercial cleaning solution prepared in the embodiment 1 of the invention soak a cyan ink filter film experimental effect chart;
FIG. 3: an experimental effect graph of the cleaning solution and the commercial cleaning solution prepared in the embodiment 1 of the invention for soaking the orange ink filter membrane;
FIG. 4: the experimental effect chart of the cleaning solution and the commercial cleaning solution prepared in the embodiment 1 of the invention for soaking the black ink filter membrane.
Detailed Description
Hereinafter, the present invention will be described in detail. Before the description is made, it should be understood that the terms used in the present specification and the appended claims should not be construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. Accordingly, the description proposed herein is just a preferable example for the purpose of illustrations only, not intended to limit the scope of the invention, so it should be understood that other equivalents and modifications could be made thereto without departing from the spirit and scope of the invention.
The following examples are given by way of illustration of embodiments of the invention and are not to be construed as limiting the invention, and it will be understood by those skilled in the art that modifications may be made without departing from the spirit and scope of the invention. Unless otherwise specified, reagents and equipment used in the following examples are commercially available products.
Example 1
The preparation method of the cleaning solution comprises the following steps:
(1) stirring 8% of diethylene glycol, 10% of propylene glycol, 4% of butyl carbitol, 0.1% of citric acid, 4200.5% of Surfynol, 0.2% of sodium benzoate and 77.2% of deionized water for 30min to obtain a mixed solution, and standing for 18 h;
(2) and (2) filtering the mixed solution obtained in the step (1) by using a high-precision polyether sulfone filter element with a spongy sublayer large cavity structure and a 0.22 mu m structure under the pressure of 0.2MPa to obtain the product.
Example 2
The preparation method of the cleaning solution comprises the following steps:
(1) stirring 10% of ethylene glycol, 5% of glycerol, 2-pyrrolidone, 2% of triethylene glycol diethyl ether, 0.3% of triethanolamine, 4650.4% of Surfynol, 0.2% of Proxel GXL and 80.1% of deionized water for 40min to obtain a mixed solution, and standing for 16 h;
(2) and (2) filtering the mixed solution obtained in the step (1) by using a high-precision polyether sulfone filter element with a spongy sublayer large cavity structure and a 0.22 mu m structure under the pressure of 0.4MPa to obtain the product.
Example 3
The preparation method of the cleaning solution comprises the following steps:
(1) stirring 12% of triethylene glycol, 10% of polyethylene glycol, 4% of diethylene glycol diethyl ether, 2% of urea, 0.25% of triethanolamine, 4650.45% of Surfynol, Dynol 6040.05%, 0.2% of Proxel GXL and 79.05% of deionized water for 30min to obtain a mixed solution, and standing for 24 h;
(2) and (2) filtering the mixed solution obtained in the step (1) by using a high-precision polyether sulfone filter element with a spongy sublayer large cavity structure and a 0.22 mu m structure under the pressure of 0.3MPa to obtain the product.
The use method of the cleaning solution comprises the following steps: (1) intermittently injecting the prepared cleaning solution into the blocked spray head by using an injector, wherein the pressure is not easy to be overlarge, so that the glue inside the spray head is prevented from degumming, the injection is stopped when the solution sprayed from the spray nozzle is colorless, and the solution is kept stand for 30-150 min;
(2) and (3) continuously injecting cleaning liquid into the spray head on the basis of the step (1), observing the condition of the solution sprayed from the spray nozzle, and observing whether the spray nozzle obliquely sprays or does not spray the solution, and if so, continuously soaking and washing until the spray nozzle is completely unobstructed.
Examples of the experiments
In order to make the purpose, technical scheme and beneficial effect of the invention clearer, the cleaning solution and commercial cleaning solution prepared by the invention are filtered by a 0.2 micron polypropylene ultrafiltration membrane, and the condition of gel remained on the filtration membrane is observed. And filtering commercial ink by using a 0.2 micron polypropylene ultrafiltration membrane, and soaking and cleaning residual substances on the filter membrane by using the cleaning solution and the commercial cleaning solution prepared by the preparation method of the invention to compare the removal condition of the residual substances on the filter membrane.
FIG. 1 is a graph comparing the situation of gel and impurities remaining on the surface of a filter membrane when a 0.22 μm filter membrane is used to filter a cleaning solution prepared by the present invention and a commercial cleaning solution, wherein the left side of the graph is the filter membrane used to filter the cleaning solution prepared by the present invention, and the right side is the filter membrane used to filter the commercial cleaning solution.
The experimental effect of the cleaning solution and the commercial cleaning solution prepared in the embodiment 1 of the invention for soaking the cyan ink filter membrane is shown in fig. 2, wherein a in fig. 2 is the cleaning solution prepared in the embodiment 1 of the invention, and b is the commercial cleaning solution, and it can be seen from the figure that most of the residual substances on the filter membrane can be removed by soaking the cyan ink filter membrane for 2h by using the cleaning solution of the invention, while the commercial cleaning solution can achieve the effect only by soaking for 4h, which indicates that the cleaning solution prepared by using the preparation method of the invention can achieve a good cleaning effect by removing the gel in the solution, has high cleaning efficiency, and can rapidly remove the residual substances on the filter membrane without soaking for a long time.
Fig. 3 shows the experimental effect of the cleaning solution and the commercial cleaning solution prepared in example 1 of the present invention on soaking the orange ink filter membrane, where a is the cleaning solution prepared in example 1 of the present invention, and b is the commercial cleaning solution, and it can be seen from the figure that when the cleaning solution of the present invention is used to soak the orange ink filter membrane for 1 hour, the substances attached to the filter membrane can be significantly reduced, and when the cleaning solution is used to soak the orange ink filter membrane for 2 hours, the substances remaining on the filter membrane can be completely removed, and after the commercial cleaning solution is used to soak for 2 hours, the remaining orange ink on the filter membrane can. The cleaning solution prepared by the preparation method of the invention obtains better cleaning effect because the gel in the solution is removed, has high cleaning efficiency, and can quickly remove the residual substances on the filter membrane without long-time soaking.
The experimental effect of the cleaning solution and the commercial cleaning solution prepared in the embodiment 1 of the invention for soaking the black ink filter membrane is shown in fig. 4, wherein a is the cleaning solution prepared in the embodiment 1 of the invention, and b is the commercial cleaning solution, and as can be seen from the figure, the cleaning solution is used for soaking the black ink filter membrane for 1h, so that black substances attached to the filter membrane can be obviously reduced, and after the commercial cleaning solution is soaked for 1h, the filter membrane is obviously seen to have large-area residual black ink; most of the black substances remained on the filter membrane can be removed after the filter membrane is soaked for 2 hours by using the cleaning solution, and a large amount of the remained black ink is obviously seen on the filter membrane after the filter membrane is soaked for 2 hours by using the commercial cleaning solution. After the filter membrane is soaked in the cleaning solution for 2 hours, the efficiency and the result are obviously superior to those of the commercial cleaning solution.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (7)
1. A preparation method of a digital printing nozzle cleaning solution is characterized by comprising the following steps:
(1) the components in parts by weight are as follows: 5-20 parts of a humectant, 1-5 parts of a cleaning agent, 0.1-1 part of an acid-base regulator, 0.1-1 part of a surfactant, 0.1-1 part of a bactericide and 72-93.7 parts of deionized water are mixed, stirred for 30-90 min to obtain a mixed solution, and continuously kept standing for 12-24 h;
(2) and (3) filtering the mixed liquid obtained in the step (1) by using a 0.22-micron high-precision polyether sulfone filter element with a spongy sublayer large cavity structure under the pressure of 0.2-0.4 MPa to obtain the cleaning liquid for the digital printing spray head.
2. The method according to claim 1, wherein the humectant is one or more selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, glycerol, 1, 2-propanediol, 1, 3-butanediol, polyethylene glycol 200, polyethylene glycol 400, sorbitol, and cyclohexanol.
3. The preparation method of claim 1, wherein the cleaning agent is one or more of N-methyl-pyrrolidone, 2-pyrrolidone, urea, butyl carbitol, carbitol and carbitol.
4. The preparation method according to claim 1, wherein the pH regulator is one or more of citric acid, sodium citrate, acetic acid, sodium acetate, monoethanolamine, diethanolamine, and triethanolamine.
5. The method of claim 1, wherein the surfactant is one or more of Surfynol 104, Surfynol 420, Surfynol 465, Surfynol485, Dynol 604, Dynol 810, and Dynol 607.
6. The preparation method according to claim 1, wherein the bactericide is one or more of benzoic acid, sodium benzoate, Proxel GXL, and isothiazolinone.
7. The method of claim 1, wherein the conductivity of the deionized water is less than 1.0 μ S/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911178665.0A CN110684394A (en) | 2019-11-27 | 2019-11-27 | Preparation method of digital printing nozzle cleaning fluid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911178665.0A CN110684394A (en) | 2019-11-27 | 2019-11-27 | Preparation method of digital printing nozzle cleaning fluid |
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| CN110684394A true CN110684394A (en) | 2020-01-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395292A (en) * | 2013-08-13 | 2013-11-20 | 鲁继烈 | Shower nozzle protection cleaning methods of ink-jet printer and shower nozzle protection cleaning fluid |
| CN104694300A (en) * | 2013-12-05 | 2015-06-10 | 大连奥林匹克电子城利辉通讯器材商行 | Cleaning fluid for spray head of printer |
| CN107586484A (en) * | 2016-07-07 | 2018-01-16 | 广州彩喷行电子商务有限公司 | A kind of shower nozzle cleaning agent for aqueous pigment ink |
| JP2018069730A (en) * | 2016-10-27 | 2018-05-10 | 株式会社リコー | Cleaning liquid, set of ink and cleaning liquid, cleaning method, cleaning device, recording method, and recording device |
-
2019
- 2019-11-27 CN CN201911178665.0A patent/CN110684394A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395292A (en) * | 2013-08-13 | 2013-11-20 | 鲁继烈 | Shower nozzle protection cleaning methods of ink-jet printer and shower nozzle protection cleaning fluid |
| CN104694300A (en) * | 2013-12-05 | 2015-06-10 | 大连奥林匹克电子城利辉通讯器材商行 | Cleaning fluid for spray head of printer |
| CN107586484A (en) * | 2016-07-07 | 2018-01-16 | 广州彩喷行电子商务有限公司 | A kind of shower nozzle cleaning agent for aqueous pigment ink |
| JP2018069730A (en) * | 2016-10-27 | 2018-05-10 | 株式会社リコー | Cleaning liquid, set of ink and cleaning liquid, cleaning method, cleaning device, recording method, and recording device |
Non-Patent Citations (1)
| Title |
|---|
| 丁启圣等: "《新型实用过滤技术（第4版）》", 31 December 2017, 冶金工业出版社 * |
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Application publication date: 20200114 |