CN112140692B - Computer-to-plate washing fluid and preparation method thereof - Google Patents
Computer-to-plate washing fluid and preparation method thereof Download PDFInfo
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- CN112140692B CN112140692B CN201910558932.0A CN201910558932A CN112140692B CN 112140692 B CN112140692 B CN 112140692B CN 201910558932 A CN201910558932 A CN 201910558932A CN 112140692 B CN112140692 B CN 112140692B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
Abstract
The invention discloses a computer direct platemaking flushing fluid and a preparation method thereof, wherein the preparation method comprises the steps of preparing a combined surfactant; step two, preparing flushing liquid; preparation of the combined surfactant: sequentially adding an amphoteric surfactant, phosphoric acid polyether ester and alkyl ether carboxylic acid into a stainless steel or enamel kettle, and stirring for a period of time to obtain a combined surfactant; preparation of a washing liquid: adding deionized water in stainless steel or enamel kettle, under the stirring state, adding sodium metasilicate, silicate aqueous solution, dihydric phosphate in proper order, after waiting to dissolve, add the composite surfactant under the stirring state, continue stirring and add the organosilicon defoaming agent, the stirring obtains colorless transparent liquid and obtains the flush fluid, chemicals such as amphoteric surfactant that this product adopted the excellent performance, make the product have wide suitable, high efficiency, characteristics such as cleanness, be used for different brands, the temperature sensing printing plate of different models, the product is friendly to the environment, the practicality is general.
Description
Technical Field
The invention belongs to the field of printing plate making and cleaning, and particularly relates to a computer direct plate making flushing fluid and a preparation method thereof.
Background
Computer-to-plate technology is now widely used in the field of printing and plate making. The system directly sends the layout information edited and arranged by the prepress processing system to the RIP of the computer without intermediate procedures of film making, plate burning and the like, then the RIP sends an electronic file to a plate making machine, images are formed on the plate, and a printing plate is obtained after the electronic file is washed. Because the types of the photosensitive adhesives used by the printing plates of various brands are different, the printing plates have the characteristics of structure, and some common flushing fluids at present have narrow latitude, narrow use conditions, and the plates of different brands and models need different printing plate flushing liquid medicines. This requires customers to purchase different washing liquids to meet the use requirements, which causes inconvenience in use management, inventory management, transportation management, and the like.
Disclosure of Invention
The technology of the invention is to solve the problems, summarize the characteristics of various leading brand thermal printing plates in the current market, use novel high-efficiency combined surfactant, adopt double-combined main flushing agent and develop a computer direct plate-making flushing fluid with wide adaptability through a specific manufacturing process
The purpose of the invention can be realized by the following technical scheme:
a preparation method of a computer-to-plate washing liquid comprises the steps of preparing a combined surfactant; step two, preparing flushing liquid; the method comprises the following steps:
step one, preparing a combined surfactant:
sequentially adding an amphoteric surfactant, phosphoric acid polyether ester and alkyl ether carboxylic acid into a stainless steel or enamel kettle under stirring, and stirring for a period of time to obtain a combined surfactant;
step two, preparing a flushing liquid: adding deionized water into a stainless steel or enamel kettle, introducing nitrogen into the kettle, sequentially adding sodium metasilicate, silicate aqueous solution and dihydric phosphate under stirring, adding the combined surfactant obtained in the step one under stirring after the added chemicals are dissolved, continuously stirring, adding the organic silicon defoaming agent, and stirring to obtain colorless transparent liquid.
Further, the preparation method comprises the following steps:
step one, preparing a combined surfactant:
in a stainless steel or enamel kettle, under the stirring state, the rotating speed is 500 plus 800RPM, 60-80 parts of amphoteric surfactant, 15-25 parts of phosphoric acid polyether ester and 15-25 parts of alkyl ether carboxylic acid are sequentially added at normal temperature, and the mixture is stirred for 30 minutes to obtain a combined surfactant;
step two, preparing a flushing liquid:
adding 800-900 parts of deionized water into a stainless steel or enamel kettle, controlling the stirring speed at 80-90RPM and the water temperature at 15-30 ℃ under the stirring state, sequentially adding 50-150 parts of sodium metasilicate, 10-50 parts of silicate aqueous solution and 10-100 parts of dihydric phosphate, adding 10-100 parts of the combined surfactant obtained in the step one under the stirring state after the added chemicals are dissolved, continuously stirring, adding 0.1-1 part of an organic silicon defoaming agent, and stirring to obtain a colorless transparent liquid.
Further, in the step one, the amphoteric surfactant is a betaine surfactant, the phosphate polyether ester is potassium alkyl phosphate or sodium alkyl phosphate, and the alkyl ether carboxylic acid is one or more of C12-13 alkyl polyoxyethylene ether carboxylic acid, sodium fatty alcohol ether carboxylate, octanol polyether-9 carboxylic acid and tridecanol polyether-8 carboxylic acid.
Furthermore, in the step one, the betaine type surfactant is one or more of alkyl dimethyl betaine, alkyl hydroxy phosphate betaine and cocamidopropyl betaine.
Furthermore, in the second step, the water glass modulus of the sodium metasilicate is 1-1.05, the solid content of the silicate aqueous solution is more than 30%, the water glass modulus is more than 3.1, and the dihydric phosphate is sodium dihydrogen phosphate or potassium dihydrogen phosphate.
Further, in the second step, the aqueous solution of silicate is an aqueous solution of potassium silicate or sodium silicate.
The computer-to-plate washing liquid prepared by the preparation method is colorless and transparent liquid.
The invention has the beneficial effects that:
the product adopts the amphoteric surfactant and other chemicals with excellent performance, so that the product has the characteristics of wide application, high efficiency, cleanness and the like. The customer can use the high-quality washing liquid for different brands and different models of thermal printing plates, thereby bringing benefits to the customer in terms of use, stock and the like. Meanwhile, the novel high-efficiency surfactant is used, so that the product is relatively environment-friendly.
Detailed Description
The technical scheme of the invention is further described as follows:
a preparation method of a computer-to-plate washing liquid comprises the steps of preparing a combined surfactant; step two, preparing flushing liquid; the method comprises the following steps:
step one, preparing a combined surfactant:
sequentially adding an amphoteric surfactant, phosphoric acid polyether ester and alkyl ether carboxylic acid into a stainless steel or enamel kettle under stirring, and stirring for a period of time to obtain a combined surfactant;
step two, preparing a flushing liquid: adding deionized water into a stainless steel or enamel kettle, introducing nitrogen into the kettle, sequentially adding sodium metasilicate, silicate aqueous solution and dihydric phosphate under stirring, adding the combined surfactant obtained in the step one under stirring after the added chemicals are dissolved, continuously stirring, adding the organic silicon defoaming agent, and stirring to obtain colorless transparent liquid.
Before adding sodium metasilicate, nitrogen is introduced into the kettle, so that the solution is in the nitrogen atmosphere and is under the protection of nitrogen in the whole process before filling into a packaging barrel.
Further, the preparation method comprises the following steps:
step one, preparing a combined surfactant:
in a stainless steel or enamel kettle, under the stirring state, the rotating speed is 500 plus 800RPM, 60-80 parts of amphoteric surfactant, 15-25 parts of phosphoric acid polyether ester and 15-25 parts of alkyl ether carboxylic acid are sequentially added at normal temperature, and the mixture is stirred for 30 minutes to obtain a combined surfactant;
step two, preparing a flushing liquid:
adding 800-900 parts of deionized water into a stainless steel or enamel kettle, introducing nitrogen into the kettle, sequentially adding 50-150 parts of sodium metasilicate, 10-50 parts of silicate aqueous solution and 10-100 parts of dihydric phosphate at the stirring speed of 80-90RPM and the water temperature of 15-30 ℃ under the stirring state, adding 10-100 parts of the combined surfactant obtained in the step one under the stirring state after the added chemicals are dissolved, continuously stirring, adding 0.1-1 part of an organic silicon defoaming agent, and stirring to obtain colorless transparent liquid.
Further, in the step one, the amphoteric surfactant is a betaine surfactant, the phosphate polyether ester is potassium alkyl phosphate or sodium alkyl phosphate, and the alkyl ether carboxylic acid is one or more of C12-13 alkyl polyoxyethylene ether carboxylic acid, sodium fatty alcohol ether carboxylate, octanol polyether-9 carboxylic acid and tridecanol polyether-8 carboxylic acid.
Furthermore, in the step one, the betaine type surfactant is one or more of alkyl dimethyl betaine, alkyl hydroxy phosphate betaine and cocamidopropyl betaine.
Furthermore, in the second step, the water glass modulus of the sodium metasilicate is 1-1.05, the solid content of the silicate aqueous solution is more than 30%, the water glass modulus is more than 3.1, and the dihydric phosphate is sodium dihydrogen phosphate or potassium dihydrogen phosphate.
Further, in the second step, the aqueous solution of silicate is an aqueous solution of potassium silicate or sodium silicate.
The obtained flushing liquid is colorless transparent liquid, the density is 1.06-1.10 g/ml, the alkalinity of the first equivalent point: 0.3-0.7 meq/ml.
The implementation method comprises the following steps:
75 parts of alkyl dimethyl betaine and 20 parts of octyl alcohol polyether-9 carboxylic acid, 15 parts of potassium alkyl phosphate, and the composite surfactant is prepared according to the method.
840 parts of deionized water (temperature 20-25 ℃, 110 parts of sodium metasilicate, 21 parts of sodium silicate aqueous solution, 12 parts of sodium dihydrogen phosphate, 16 parts of combined surfactant and 0.2 part of organic silicon defoamer. The plate-making washing liquid is prepared by the method. The solution density was 1.08 g/ml.
When the printing plate processor is used in a general automatic printing plate processor, the temperature is 23 ℃, the processing time is 30s, the use quality on a plurality of printing plate brands is stable, the dot reproduction is good, and the processing cylinder is clean and easy to clean.
The second embodiment is as follows:
70 parts of cocamidopropyl betaine, 15 parts of potassium alkyl phosphate and 25 parts of tridecyl polyether-8 carboxylic acid, and the surfactant composition is prepared according to the method.
830 parts of deionized water (the temperature is 20-25 ℃, 90 parts of sodium metasilicate, 45 parts of potassium silicate aqueous solution, 8 parts of monopotassium phosphate combined surfactant, 27 parts of and 0.4 part of organic silicon defoaming agent. The plate-making washing liquid is prepared by the method. The solution density was 1.07 g/ml.
When the printing plate is used in a general automatic printing plate developing machine, the temperature is 25C, the developing time is 22s, the printing plate developing effect is good when various printing plates are used, the printing plates are clean, and the developing residues are easy to develop.
The prepared flushing liquid has stable property, and the effective period can reach 2 years in a sealed barrel at the storage temperature of 5-3 ℃.
Finally, it should be noted that:
the method may be carried out and its application may be carried out by those skilled in the art with reference to the disclosure herein, and it is expressly intended that all such alternatives and modifications as would be apparent to those skilled in the art are deemed to be included within the invention. While the method and application of the present invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the method and application of the invention as described herein may be made and equivalents employed without departing from the spirit and scope of the invention.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, and the appended claims are intended to cover such modifications and equivalents as fall within the true spirit and scope of the invention.
Claims (7)
1. A preparation method of a computer-to-plate washing fluid is characterized by comprising the following steps:
the preparation method comprises the following steps of (1) preparing a combined surfactant; step two, preparing flushing liquid; the method comprises the following steps:
step one, preparing a combined surfactant:
sequentially adding an amphoteric surfactant, phosphoric acid polyether ester and alkyl ether carboxylic acid into a stainless steel or enamel kettle under stirring, and stirring for a period of time to obtain a combined surfactant;
step two, preparing a flushing liquid: adding deionized water into a stainless steel or enamel kettle, introducing nitrogen into the kettle, sequentially adding sodium metasilicate, silicate aqueous solution and dihydric phosphate under stirring, adding the combined surfactant obtained in the step one under stirring after the added chemicals are dissolved, continuously stirring, adding the organic silicon defoaming agent, and stirring to obtain colorless transparent liquid.
2. The method of claim 1, wherein: the preparation method comprises the following steps:
step one, preparing a combined surfactant:
in a stainless steel or enamel kettle, under the stirring state, the rotating speed is 500 plus 800RPM, 60-80 parts of amphoteric surfactant, 15-25 parts of phosphoric acid polyether ester and 15-25 parts of alkyl ether carboxylic acid are sequentially added at normal temperature, and the mixture is stirred for 30 minutes to obtain a combined surfactant;
step two, preparing a flushing liquid:
adding 800-900 parts of deionized water into a stainless steel or enamel kettle, introducing nitrogen into the kettle, sequentially adding 50-150 parts of sodium metasilicate, 10-50 parts of silicate aqueous solution and 10-100 parts of dihydric phosphate at the stirring speed of 80-90RPM and the water temperature of 15-30 ℃ under the stirring state, adding 10-100 parts of the combined surfactant obtained in the step one under the stirring state after the added chemicals are dissolved, continuously stirring, adding 0.1-1 part of an organic silicon defoaming agent, and stirring to obtain colorless transparent liquid.
3. The method of claim 2, wherein: in the first step, the amphoteric surfactant is a betaine surfactant, the phosphate polyether ester is alkyl phosphate potassium salt or alkyl phosphate sodium salt, and the alkyl ether carboxylic acid is one or more of C12-13 alkyl polyoxyethylene ether carboxylic acid, fatty alcohol ether carboxylic acid sodium, octanol polyether-9 carboxylic acid, and tridecanol polyether-8 carboxylic acid.
4. The method of claim 3, wherein: in the first step, the betaine type surfactant is one or more of alkyl dimethyl betaine, alkyl hydroxy phosphoric acid betaine and cocamidopropyl betaine.
5. The method of claim 3, wherein: in the second step, the sodium metasilicate has a water glass modulus of 1-1.05, the solid content of the silicate aqueous solution is more than 30%, the water glass modulus is more than 3.1, and the dihydric phosphate is sodium dihydrogen phosphate or potassium dihydrogen phosphate.
6. The method of claim 5, wherein: in the second step, the aqueous solution of silicate is aqueous solution of potassium silicate or aqueous solution of sodium silicate.
7. A computer-to-plate washing fluid is characterized in that: the rinse solution is prepared by the method of any one of claims 1 to 6.
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| CN201910558932.0A CN112140692B (en) | 2019-06-26 | 2019-06-26 | Computer-to-plate washing fluid and preparation method thereof |
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| CN201910558932.0A CN112140692B (en) | 2019-06-26 | 2019-06-26 | Computer-to-plate washing fluid and preparation method thereof |
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| CN112140692B true CN112140692B (en) | 2021-07-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60147395A (en) * | 1984-01-12 | 1985-08-03 | Fuji Photo Film Co Ltd | Plate surface cleaning agent for planographic plate |
| JP3518632B2 (en) * | 1995-03-06 | 2004-04-12 | 富士写真フイルム株式会社 | Plate making method of lithographic printing plate |
| US6511790B2 (en) * | 2000-08-25 | 2003-01-28 | Fuji Photo Film Co., Ltd. | Alkaline liquid developer for lithographic printing plate and method for preparing lithographic printing plate |
| US7018777B2 (en) * | 2002-09-11 | 2006-03-28 | Fuji Photo Film Co., Ltd. | Method of making lithographic printing plate |
| CN101389476B (en) * | 2006-02-28 | 2010-06-23 | 爱克发印艺公司 | Method for making a lithographic printing plate |
| JP2011063012A (en) * | 2009-08-19 | 2011-03-31 | Fujifilm Corp | Plate making method for relief printing plate and rinse liquid for relief printing plate making |
| JP2015030122A (en) * | 2013-07-31 | 2015-02-16 | 富士フイルム株式会社 | Flexographic printing plate and method for plate-making the same, laser engraving type flexographic printing plate rinse liquid, and laser engraving type flexographic printing plate plate-making kit |
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