CN102303465A - Alcohol-free concentrated fountain solution and preparation method thereof - Google Patents
Alcohol-free concentrated fountain solution and preparation method thereof Download PDFInfo
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- CN102303465A CN102303465A CN201110280957A CN201110280957A CN102303465A CN 102303465 A CN102303465 A CN 102303465A CN 201110280957 A CN201110280957 A CN 201110280957A CN 201110280957 A CN201110280957 A CN 201110280957A CN 102303465 A CN102303465 A CN 102303465A
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Abstract
The invention provides an alcohol-free concentrated fountain solution and a preparation method thereof. The alcohol-free concentrated fountain solution is prepared from the following components based on 100 parts by weight: 0.5-5 parts of low-foam wetting agent, 8-20 parts of pH value regulator, 3-20 parts of printing plate protective agent, 5-10 parts of a water film regulator, 0.2-1.0 part of decontamination intensifier, 0.1-1.0 part of bactericide, 0.1-1.2 parts of defoamer and the balance of water. The concentrated fountain solution provided by the invention is environmentally-friendly, provides guarantee for the health of workers, and can improve the quality of the printing products.
Description
Technical field
The present invention relates to a kind of fed press fountain solution, refer in particular to a kind of fountain solution concentrate of exempting from alcohol edition-0 moistening.
Background technology
To the alcohol machine, print speed printing speed and quality all improve a lot offset print from water rumble machine, but alcohol edition-0 moistening has following shortcoming:
1, all there are certain toxicity in alcohol or isopropyl alcohol, and be harmful, and long-term contact can cause slow poisonings such as respiratory system and the liver kidney of human body, harm operator's health.
2, alcohol or isopropyl alcohol all are the high organic solvents of volatility; Approximately in the use all waste more than 40% because of volatilization; Environment has also been caused pollution; Also just because of alcohol and the high volatility of isopropyl alcohol; So the addition of alcohol or isopropyl alcohol is very big, constantly replenishes and just can keep certain concentration to guarantee the stable of printing.
3, the flash-point of alcohol or isopropyl alcohol is lower, 12 ℃ of alcohol flash-points, 11.7 ℃ of isopropyl alcohol flash-points; Deposit or use in must special annotate and want safety, otherwise initiation fire easily jeopardizes property and personal safety.
Therefore research and development can replace fully alcohol or isopropyl alcohol, safety and environmental protection exempt from the main trend that alcohol edition-0 moistening liquid is printing industry.
On current market, also do not have be applicable to various types exempt from alcohol edition-0 moistening liquid, in use can there be following problem in the existing alcohol edition-0 moistening liquid of exempting from:
1, can not be suitable for to generality.Ability usefulness but can not be used on old slightly machine on new engine; Or basically can usefulness on the machine of some brand, on the machine of other brand, but can't use; Or the printing ability usefulness of seal plain net, the big printing on the spot of seal but can not be used.
2, have relatively high expectations to machine adjustments with to operating personnel's skilled operation degree, the operating personnel that lack experience are difficult to use, and with respect to traditional alcohol edition-0 moistening liquid, the bad control of ink-water balance is prone to the defect that water is big or water is done in the use.Can feel incompatible for the user who is accustomed to alcohol edition-0 moistening liquid.
3, stability is not strong, and in incipient stage ability usefulness, the Use Limitation fruit has been difficult to reach requirement after a couple of days at least.
4, concerning the part machine, existing foam of exempting from alcohol edition-0 moistening liquid too much also can cause the inconvenience of use.
So be necessary deep research and development can overcome above all shortcomings, can really generally be applicable to existing offset press exempt from alcohol edition-0 moistening liquid.
Summary of the invention
The purpose of this invention is to provide the used fountain solution of a kind of offset press, in use can reach the purpose of safety and environmental protection, energy-saving and emission-reduction, make the printing operation workman can exempt the chronic murder by poisoning of alcohol or isopropyl alcohol, simultaneously press quality is had bigger lifting.In addition, the present invention exempts from alcohol edition-0 moistening liquid can realize the general alcohol edition-0 moistening printing of exempting from, and allowing the user needn't change existing custom just can fine use, really replaces alcohol or isopropyl alcohol fully.
The present invention realizes (in 100 weight portions) through following scheme:
Low-foam wetting agents preferred, polyethers class and/or silicone based water soluble surfactant active, one or more in preferred propylene glycol block polyether, alkylphenol-polyethenoxy polyethenoxy ether, allyl alcohol polyoxy alkyl ether, PPG, the polyether-modified polysiloxane.
PH value conditioning agent is the composition of citric acid, natrium citricum, phosphoric acid, zinc dihydrogen phosphate, EDTA-2Na, ammonium nitrate; Be preferably citric acid: natrium citricum: phosphoric acid: zinc dihydrogen phosphate: EDTA-2Na: ammonium nitrate=(1～6): (3～8): (0.1～0.8): (0.5～5): (1～4): the composite interpolation of the ratio of (0.2～2).
The high score subclass native compound that forme protective agent preferred hydrophilic can be redissolved by force is like gum arabic, CMC etc.
Moisture film adjustment agent can increase water film thickness and can make moisture film be difficult for breaking, and is preferably glycerine: white granulated sugar=(3～8): the composite interpolation of the ratio of (0.5～3).
The decontamination reinforcing agent can be removed the printing ink at blank position fast; Its composition is for strengthening the composition of dirt-removing power; Preferred low foaming bleeding agent stable in acid: 2-ethylhexyl sulfuric ester sodium salt and/or poly alkyl alcohol oxyalkyl ether, like the low bubble bleeding agent SF of Hai'an petrochemical iy produced.
Bactericide is the composition of ability sterilization algae removal preferably; Can select this area bactericide commonly used for use, like in OIT, ethylenebis dithiocarbamate sulfinic acid ethyl ester, 2-sulfenyl in last of the ten Heavenly stems ethylamine hydrochloride (DTEA), 2-(thiocyanic acid methyl mercapto) benzothiazole (TCMTB) one or more.
The preferred water-based defoamer of defoamer is necessary for the printing machine of old-fashioned water tank, and this area water-based defoamer commonly used all can be used for the present invention.
Principle of the present invention is following: low-foam wetting agents and decontamination reinforcing agent can make the surface tension of water reduce, and make moisture film cover blank position rapidly, also can well cover when being implemented in high speed printing, prevent on the blank position dirty.Make simultaneously fountain solution at blank position spreading rate fast, wetting effect is good; Wetting agent is selected low bubble product, can prevent the problem that foam is too much.Because the adding of decontamination reinforcing agent is arranged, when printing machine can play the China ink layer on the blank position of quick removing by dragging version or other reasons to cause on the blank position behind the China ink, printing is carried out smoothly and need not artificially be cleaned the space of a whole page.
Forme is under friction at a high speed, and blank position oxidation film layer can wear and tear, if untimely reparation can cause very big influence to the thickness of moisture film and the hydrophily at blank position, goes up dirtyly easily, is unfavorable for normal printing.In the pH value conditioning agent of the present invention, it is right that citric acid and natrium citricum are formed pool of buffer, makes the pH value can remain on stable scope; Phosphoric acid and zinc dihydrogen phosphate can provide certain acidity; Strengthen the decontamination cleaning capacity; What is more important phosphoric acid, zinc dihydrogen phosphate, these three kinds of components of ammonium nitrate can carry out replenishing fast phosphate layer to the blank position of exposed forme of having worn and torn, strengthen water imbibition and hydrophilic and scold oily ability; Mechanical iron and steel parts there are inhibition and antirust effect.Concrete mechanism is: when exposed forme aluminium simple substance during earlier by the phosphoric acid etch; Base metal surface H+ concentration reduces; Make the hydrolysis of zinc dihydrogen phosphate carry out towards the direction that generates trbasic zinc phosphate; Trbasic zinc phosphate promptly is deposited on the exposed forme; Become the phosphate rete, ammonium nitrate here has been to promote rete to generate and unpolarized effect (preventing to release hydrogen during the etch parent metal).The main role of EDTA-2Na is that the calcium ions and magnesium ions in the water is played complexing, prevents that calcium ions and magnesium ions from producing calcification and influencing water or black transmission damping roller or ink roller.Collocation can guarantee stable p H value like this, can repair the oxidation film layer that is worn fast again, and this has better effect than the Bailer liquid that uses with the alcohol collocation, also can remedy the defective of the thin serious wear of being brought of moisture film of exempting from alcohol edition-0 moistening liquid; This defective can be well solved, and realizes that printing is more stable.
The protectant main effect of forme is that the hydrophily at blank position is strengthened, and makes moisture film more be prone to cover, and weakens the wearing and tearing at blank position are also corresponding, even also can reach the effect of balance after shutting down once more fast; Secondly also the viscosity of the fountain solution that uses is improved, water function in the raising is close itself and alcohol edition-0 moistening, uses more convenient.
The effect of moisture film adjustment agent for increasing water film thickness and can making moisture film be difficult for breaking; Because it is high not as the viscosity of alcohol edition-0 moistening liquid to exempt from the overall viscosity of alcohol edition-0 moistening liquid; The moisture film of exempting from alcohol edition-0 moistening is thick not as the moisture film of alcohol edition-0 moistening; Too thin then being prone to of moisture film broken; The place of breaking then can't resist scolds printing ink; Cause on the forme dirtyly, can't normally print.Add moisture film adjustment agent and then can remedy so shortcoming, just must use with alcohol and not have very big difference, also the gap with alcohol of furthering further.Make that the applicability of exempting from alcohol edition-0 moistening strengthens, stability also strengthens.
Comprehensive above-described additive all is after remove alcohol, can reach fast that the purpose of ink-water balance launches, and lithographic ultimata also is an ink-water balance with requiring, and does not require then can't normally print if reach this.So described fountain solution concentrate composition of this patent and the contrast of alcohol edition-0 moistening liquid have following advantage:
1, owing to do not contain volatile component, concentration stabilize in the printing process, the printing aberration is little, start back printing good stability; After even the use working solution for preparing is placed a period of time, need not add the concentrate printing of also can starting shooting.
2, also can reach ink-water balance more quickly with thinner moisture film, easy to operate, the user there is not specific (special) requirements, do not change use habit, wide adaptability; The unlikely printing ink that excessively waters down of Bao moisture film more makes that genuine ink film is more bright-coloured, full, just can reduce color with still less China ink, the quality of raising printing.
3, fountain solution moisture film of the present invention is thin, and hydrophily is strong, is amphiphile, amphiphilic molecule unlike alcohol, does not get on so can not pass to blanket, and paper can not receive the influence of fountain solution yet and be out of shape, and the positive and negative cover accurately.
4, fountain solution of the present invention does not have flash-point, nonflammable, transports and deposit safety.
5, fountain solution environmentally safe of the present invention, healthy secure to the printing worker has very great help to the air quality of improving the print production environment.
6, fountain solution of the present invention is applicable to various types and/or user, can replace alcohol or isopropyl alcohol fully, reaches the purpose of energy-saving and emission-reduction, and the comprehensive consumables cost of fountain solution can decline to a great extent more than 30%.
The specific embodiment
Following examples will help those of ordinary skill in the art further to understand the present invention, but not limit the present invention in any form.
Embodiment one:
A kind of lithographic printing comprises following component (consumption is a weight portion) with the fountain solution concentrate composition:
Take by weighing above-mentioned raw materials in proportion, earlier water is added in the agitated reactor, add solid material more successively, adding method: add a kind of raw material in back after a kind of raw material dissolves fully before to be added again.Also add liquid charging stock successively then with same adding method; After adding all raw materials; Stirred 1 hour; Promptly process finished product; The fountain solution concentrate composition thin up of processing becomes 2～3% the aqueous solution to be the fountain solution of direct use; Add in the water tank of printing machine, but just normal boot-strap printing.
Embodiment two:
A kind of lithographic printing comprises following component (consumption is a weight portion) with the fountain solution concentrate composition:
Take by weighing above-mentioned raw materials in proportion, earlier water is added in the agitated reactor, add solid material more successively, adding method: add a kind of raw material in back after a kind of raw material dissolves fully before to be added again.Also add liquid charging stock successively then with same adding method; After adding all raw materials; Stirred 1.5 hours; Promptly process finished product; The fountain solution concentrate composition thin up of processing becomes 2～3% the aqueous solution to be the fountain solution of direct use; Add in the water tank of printing machine, but just normal boot-strap printing.
Embodiment three:
A kind of lithographic printing comprises following component (consumption is a weight portion) with the fountain solution concentrate composition:
Take by weighing above-mentioned raw materials in proportion, earlier water is added in the agitated reactor, add solid material more successively, adding method: add a kind of raw material in back after a kind of raw material dissolves fully before to be added again.Also add liquid charging stock successively then with same adding method; After adding all raw materials; Stirred 2 hours; Promptly process finished product; The fountain solution concentrate composition thin up of processing becomes 2～3% the aqueous solution to be the fountain solution of direct use; Add in the water tank of printing machine, but just normal boot-strap printing.
In order to verify that the present invention exempts from the result of use of alcohol edition-0 moistening liquid, has carried out the contrast test with traditional alcohol fountain solution:
Comparative Examples one:
Compound method preparation working solution with traditional alcohol edition-0 moistening liquid: with Pu Dekang S101E fountain solution 3%, isopropyl alcohol 12%, water 85%.
Comparative Examples two:
A kind of lithographic printing comprises following component (consumption is a weight portion) with the fountain solution concentrate composition:
Take by weighing above-mentioned raw materials in proportion, earlier water is added in the agitated reactor, add solid material more successively, adding method: add a kind of raw material in back after a kind of raw material dissolves fully before to be added again.Also add liquid charging stock successively then with same adding method; After adding all raw materials; Stirred 1 hour; Promptly process finished product; The fountain solution concentrate composition thin up of processing becomes 2～3% the aqueous solution to be the fountain solution of direct use; Add in the water tank of printing machine, but just normal boot-strap printing.
Above Comparative Examples two prescriptions just remove the phosphoric acid among the embodiment three, zinc dihydrogen phosphate, these three kinds of components of ammonium nitrate, are the component of moisture film adjustment agent that glycerine and white granulated sugar also remove again.
Test index: the press resistance rate of stability, forme.
The test way: 1, Wen Dingxing test way, with the printing machine of different brands, with the working solution equal conditions printing down respectively of embodiment and Comparative Examples, use continuously and exceeded in 10 days.Use very suitable, good stability note " zero ", most printing can print, or has some minor issues notes " " in using, be difficult to or print off the printing of coming and do not reach requirement and remember " △ ".
2, the test way of the press resistance rate of forme; The new forme of a cover with same is tested on same printing machine; Working solution equal conditions printing down respectively with embodiment and Comparative Examples; To print 100,000 is quantity; Can only print note " zero " with the new forme of a cover; Again change one to two note that ability has been printed " ", change the note " △ " that (contains three) more than three and could print again.
Test result is following:
Annotate: A is Heidelberg printing machine in 1994, splits four looks, 1020 * 720MM, model: CD102V+LX
B is little gloomy printing machine in 1992, splits four looks, 1020*720MM, model: L440
C is rowland printing machine in 1993, splits four looks, 1020*720MM, model: RL604
Show that by above result this patent is in use same with the alcohol edition-0 moistening liquid phase; Use habit too; Several printing machines commonly used also can finely be suitable for; The printing that prints is observed the site through magnifying glass; All clear than alcohol edition-0 moistening liquid of embodiment; The site is reduced well, and is indeformable; And after the result of Comparative Examples two just can find out few interpolation phosphoric acid, zinc dihydrogen phosphate, ammonium nitrate, the press resistance rate of forme obviously descended; Simultaneously do not add glycerine and white granulated sugar, stability in use has also descended.The damping fluid power of producing through reasonably combined each component replaces alcohol fully and realizes exempting from the alcohol printing.
Claims (10)
1. exempt from the alcohol edition-0 moistening concentrated liquor for one kind, it is characterized in that, form by following component in 100 weight portions:
2. fountain solution concentrate according to claim 1, said low-foam wetting agents are polyethers and/or silicone based water soluble surfactant active.
3. fountain solution concentrate according to claim 1 and 2, said low-foam wetting agents are selected from one or more in propylene glycol block polyether, alkylphenol-polyethenoxy polyethenoxy ether, allyl alcohol polyoxy alkyl ether, PPG, the polyether-modified polysiloxane.
4. fountain solution concentrate according to claim 1, said pH value conditioning agent is made up of citric acid, natrium citricum, phosphoric acid, zinc dihydrogen phosphate, EDTA-2Na and ammonium nitrate.
5. fountain solution concentrate according to claim 4; Said pH value conditioning agent is citric acid: natrium citricum: phosphoric acid: zinc dihydrogen phosphate: EDTA-2Na: ammonium nitrate=(1～6): (3～8): (0.1～0.8): (0.5～5): (1～4): (0.2～2).
6. fountain solution concentrate according to claim 1, said forme protective agent is gum arabic and/or CMC.
7. fountain solution concentrate according to claim 1, said moisture film adjustment agent is made up of glycerine and white granulated sugar.
8. fountain solution concentrate according to claim 7, said moisture film adjustment agent is a glycerine: white granulated sugar=(3～8): (0.5～3).
9. fountain solution concentrate according to claim 1, said decontamination reinforcing agent are 2-ethylhexyl sulfuric ester sodium salt and/or poly alkyl alcohol oxyalkyl ether.
10. the preparation method of the described fountain solution concentrate of arbitrary claim in the claim 1 to 9 comprises the steps:
Take by weighing said low-foam wetting agents, pH value conditioning agent, forme protective agent, moisture film adjustment agent, decontamination reinforcing agent, bactericide and defoamer by a certain percentage;
Water is added in the agitated reactor, add solid material more successively, add a kind of raw material in back after a kind of raw material dissolves fully before treating again; Add liquid charging stock successively with same method then, add all raw materials after, stirred 1～2 hour, promptly process finished product.
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| CN103660669A (en) * | 2013-11-18 | 2014-03-26 | 蚌埠市英路光电有限公司 | Alcohol-free fountain solution and preparation method thereof |
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