CN102275395B - Printing technology of rotary high-speed gravure UV colorful ink - Google Patents
Printing technology of rotary high-speed gravure UV colorful ink Download PDFInfo
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- CN102275395B CN102275395B CN 201010203335 CN201010203335A CN102275395B CN 102275395 B CN102275395 B CN 102275395B CN 201010203335 CN201010203335 CN 201010203335 CN 201010203335 A CN201010203335 A CN 201010203335A CN 102275395 B CN102275395 B CN 102275395B
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Abstract
The invention discloses a printing technology of rotary high-speed gravure UV (ultraviolet) colorful ink, and belongs to a printing process in which UV ink is printed through a gravure method. The technical scheme of the printing technology of rotary high-speed gravure UV colorful ink is characterized in that: (1) a gravure is carved by adopting electrons or laser, wherein the depth of the gravure is within 23 to 28 mum; (2) a UV (ultraviolet) drying system is additionally arranged on a gravure press; (3) a special temperature control ink tank is adopted; (4) a ceramic ink scraping blade is adopted on the gravure press; (5) the ink printing viscosity is controlled to be 14 to 17 seconds; (6) an antifoggant is added in the ink; and (7) the UV colorful ink comprises the following components in percentage by weight: 5 to 18 percent of acrylic oligomer, 44 to 85 percent of diluent, 3 to 15 percent of photoinitiator, 5 to 20 percent of pigment, 0.1 to 2 percent of wetting and leveling defoaming agent and 0.1 to 1 percent of polymerization inhibitor. The printing technology of rotary high-speed gravure UV colorful ink is simple and practicable, has a remarkable technical effect, and creates a totally new way for application of the UV colorful ink.
Description
Technical field
The invention belongs to the print process that UV printing ink adopts the gravure mode to print, especially a kind of typography that turns the UV color series printing ink that gravure finishes with high-speed wheel.
Background technology
Along with the development of printing-ink, pure water type printing ink, water color ink, UV printing ink and bean plant oil-based ink etc. will become the main flow of printing industry gradually for the environmental type printing ink of representative.And in the prior art, the color series ink printing of UV printing ink mainly is as main take offset printing, silk-screen and flexo.Because the factors such as characteristic of mode of printing difference and gravure, colored UV printing ink also achieves no breakthrough in the gravure printing field, and is still blank so far.
In the prior art, the printing of the general employing of gravure look China ink solvent type ink is used a large amount of solvents, and must add more substantial solvent in order to dilution when printing in this type of ink formulations, and these organic solvents finally all can enter atmosphere, cause serious environmental pollution.Along with people's environmental consciousness is strengthened, advocating of whole world green economy, the application of low-carbon energy-saving technology, the relatively green printing ink such as increasing water-based inks, the solid printing ink of light, electron beam curing ink grow up, and and progressively replace solvent ink and be applied.UV class printing ink gravure particularly the application that turns in the gravure field of high-speed wheel also rest on the decorative ink stage, as: pseud metal-etching (frosted), decoration printing etc., in fact, they are non-colored inks, and they are real widely used to be gravure UV glazing.
As everyone knows, it is fast that wheel turns gravure printing speed, generally all is higher than 100m/min, be up to 300m/min, the intaglio printing ink film thickness is generally 10～20 μ m, sometimes will surpass 40 μ m, because black bed thickness, speed are fast, and the ink surface layer oxygen inhibition is very outstanding, UV ink solidification speed is slower, and the dark pigment that is difficult in the deep UV printing ink of thorough curing, particularly color absorbs all light at ultraviolet region, enter the ultraviolet ray of initator seldom, easily produce and solidify not good fault.Packaging Printing Product is had relatively high expectations to the aspects such as the base material adhesive force of UV printing ink, solidification rate, printability, and needs to satisfy the gold stamping adaptive of postorder and packing of product adaptive, VOC
sLimit standard requirement etc.Present stage there is no gravure UV colored ink and can satisfy simultaneously above processing request, and according to investigations, UV colored ink particularly dark color is that colored ink not yet has the use record in packages printing gravure field.In addition, UV colored ink cost also is one of restraining factors than the solvent type ink height.More than all factors all limited further developing of UV gravure ink.At present not real ripe UV colored ink in the gravure field particularly packages printing gravure field obtain actual scale and use, wait research and development application.
Summary of the invention
Above-mentioned deficiency for prior art, the technical problem to be solved in the present invention provides a kind of typography that turns high-speed intaglio printing UV color series printing ink of taking turns, realized still adopting the quick-drying colored ink typography of UV mode for blank high-speed rotary gravure press, make UV ink printing product can satisfy the rear processing request of series, satisfy Modern Printing Enterprise environmental protection, efficiently production requirement.And can satisfy the gold stamping requirement of postorder, reduce UV glazing operation, thereby, shorten the production cycle, improve product percent of pass and production efficiency, obtain preferably economic benefits.
Technical scheme of the present invention is: the typography that wheel turns high-speed intaglio printing UV color series printing ink turns high-speed gravure press printing with wheel, and its special feature is:
(1) adopt electronics or laser engraving gravure, version is dark between 23-28 μ m;
(2) set up the UV drying system at intaglio printing press;
(3) the special ink cylinder of employing energy temperature control (heating when temperature is low): outside the black cylinder heating jacket is set printing ink is heated, heating tube is set in the heating jacket, heating tube is connected with temperature controller, and jacket temperature is controlled at 30-45 ℃; The interior recirculation ink pipe bottom of China ink cylinder arrives 1/3 place, bottom of black cylinder, and outlet is set to the bent tube form at 90-70 degree angle, makes the interior printing ink of black cylinder form transverse annular along black cylinder and flows; The ink reclaiming pipe lower end contiguous black cylinder bottom of outlet section is set;
(4) adopt ceramic doctor blade at intaglio printing press, its base material is the carbon steel of ultra-fine carbon alloy one's share of expenses for a joint undertaking, and steel surface is coated with ceramic release coating;
(5) control ink printing viscosity is in 14-17 second;
(6) add antifoggant in printing ink, addition is the 1%-5% of total weight;
(7) described UV color series printing ink is comprised of following component and percetage by weight:
Acrylic ester oligomer 5-18%;
Diluent 44-85%;
Light trigger 3-15%;
Pigment 5-20%;
Wetting levelling defoamer 0.1-2%;
Polymerization inhibitor 0.1-1%.
Described black cylinder is set to two, and two black cylinders are heated simultaneously and kept needed temperature, and a black cylinder uses online, and another black cylinder is used for storing and adding printing ink.
Described antifoggant is Tissuemat E, and particle diameter is 10-20 μ m.Described diluent is the hexylene glycol double methacrylate of the extremely low difunctional of absolute viscosity.Described light trigger is the light trigger that its absorption trough that absorbs crest and pigment is close, and blue series UV color series printing ink is selected the free radical crack type photoinitiator: α-amine alkylbenzene ketone initator is or/and the thioxanthone initator.Described wetting levelling defoamer is organic silicon modified by polyether type defoamer.Described polymerization inhibitor is nitroxyl oxides of free radical inhibitor.Described acrylic ester oligomer is the polyacrylate with side chain carboxyl group.(above chemical substance is the commercially available prod, non-the applicant's self-control)
Of the present invention simple for process, obvious technical effects, broken the limitation that the UV colored ink can only be applied in offset printing, wire mark, flexo, ink-jet field, for brand-new approach has been started in the application of UV colored ink, the product printing quality of explained hereafter of the present invention is splendid, and produce efficient, environmental protection, reached and not only enhanced productivity but also the doulbe-sides' victory pattern of energy-saving and emission-reduction.
Description of drawings
Accompanying drawing 1 is black cylinder structure schematic diagram of the present invention.
Accompanying drawing acceptance of the bid score state as follows: the 1-roller platen; 2-gravure forme; 3-pottery doctor blade; The 4-ink tank; The 5-paper tape; The 6-ink tube; The 7-ink reclaiming pipe; The electronic pump of 8-; 9-China ink cylinder; Recirculation ink pipe in the 10-; 11-ink supply suction pipe; Loop direction in the 12-printing ink; The 13-heating jacket; The 14-heating tube; The 15-temperature controller.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention and Relational Questions are described in further detail.The present invention is that a kind of suiting used at high-speed rotary gravure press, adopt the quick-drying colored ink typography of UV mode, and this technique can make UV colored ink print product satisfy the rear processing request of series, satisfies Modern Printing Enterprise environmental protection, efficiently production requirement.Compare with print product gold stamping behind the gravure printing of prior art, that carry out off-line UV glazing again, the UV look ink print product of this technique has the advantage of brightness height, rub resistance, this technique printed matter performance reaches effect behind the UV glazing with specific energy, can cancel the glazing operation, reduce operation, shortened the production cycle; This technique UV look ink print product can be realized directly gold stamping, can improve product percent of pass and production efficiency, obtains preferably economic benefits.This technique turns the dual characteristics of gravure printing and UV look China ink for wheel, conditional parameter, the wheel of finding out recess engraving parameter, printing ink uv equipment through repetition test turn the gravure printing parameter, and assembly satisfy the composition structure of the gravure UV look China ink of actual print, with the well combination of above each factor, finished the method for this technique.Continual Improvement and the work such as perfect of the basic research of printing ink, the establishment of finishing the conditional parameter of the determining of forme parameter, printing ink uv equipment, UV look China ink have successively been carried out.Draw a design the Specifications of check printing ink by actual: the water-mist-proof performance when printability, curing rate, folding quality, crocking resistance, packing, gold stamping adaptive and the color reducibility of following process, update, until meet production requirement.
Adopt electronics or laser engraving gravure in this technique, dark finally being controlled between the 23-28 μ m of version, the suitable engraving degree of depth can when ensure the ink color saturation degree, make UV look China ink obtain good UV and solidify; And solvent ink gravure version is dark generally at 40-50 μ m in the prior art, therefore, this technique UV look China ink is taken turns when turning gravure printing, and ink usage can reduce greatly, but the higher production cost that brings of balance UV printing ink price descends the actual cost of this technique.
The temperature control China ink cylinder (heating when temperature is low) of this process using special use: outside the black cylinder heating jacket is set printing ink is heated, jacket temperature is controlled at 30-45 ℃; The interior recirculation ink pipe bottom of China ink cylinder arrives 1/3 place, bottom of black cylinder, and outlet is set to the bent tube form at 90-70 degree angle, makes the interior printing ink of black cylinder form transverse annular along black cylinder and flows.The printing ink of the inner loop of the black cylinder of prior art directly falls cylinder bottom after rise, the change of recirculation ink pipe can make printing ink form transverse annular flowing along black cylinder circumferencial direction in this technique, thereby drive the continuous circulation of printing ink in the black cylinder, improved the flowability of printing ink in black cylinder, make distributes ink better, make the antifoggant particle in the printing ink disperse more even.This technique is used two heated ink cylinders of major-minor, and main black cylinder is that the printshop needs ink supply China ink cylinder, and secondary black cylinder is used for deposit, allotment, preheating printing ink.When replenishing printing ink, with preheating and deployed printing ink slowly add and becomes owner of black cylinder in the secondary heated ink cylinder.Secondary black cylinder temperature keeps basically identical with main black cylinder temperature.The ink reclaiming pipe lower end contiguous black cylinder bottom of outlet section is set; The ink supply of control printing ink, time black flow, impact liquid level produces too much bubble in the black process in case printing ink reaches back in ink supply.Defoamer is how much irrelevant in the generation of this bubble and the printing ink, belongs to physical change, to be controlled to be main (adding contraction and levelling that too much defoamer can affect printing ink).Ink supply flow-control printing ink in forme China ink groove black cylinder that can reflux gets final product.The extremely black cylinder bottom of the length of ink reclaiming pipe section reduces back black drop, reduces and impacts probability, suppresses Bubble formation.Heating of printing ink also plays a role to suppressing bubble.
This technique changes doctor blade into ceramic tip by former conventional steel band blade.The pottery doctor is to be the surperficial coated ceramic release coating (ceramic tip is the commercially available prod) of the carbon steel of ultra-fine carbon alloy molecule at base material, coating hardness is consistent (at this with scraper base material hardness, not in order to improve hardness or to prolong scraper blade life, on the contrary, much higher hard can injure roller), the coating effect is the frictional force that lowers between cutter and the roller, thereby reduces blade wears.Another characteristics of coating are not glue exogenous impurity, thereby can reduce the wire drawing situation.Because containing the antifoggant particulate matter in the printing ink, easily hinder scraper and forme, greatly reduce the wearing and tearing to scraper and forme behind the use ceramic blade.The common rigidity scraper of former use is produced 100,000 seals and the time need be changed scraper, change ceramic doctor into after, the tool changing frequency reduces more than 1 times.
This technical oil ink print viscosity is controlled at 14-17 second, regulates ink viscosity by special-purpose UV diluent when viscosity is too high.Described here take second be the general a kind of expression method of printing industry by the viscosity representation of unit, viscosity has multiple expression method, viscosity described here is the result who uses flow cup to measure, and the used measuring cup of this technique is: the Rigosha3# cup is a kind of brand of Japan.
This technique is added antifoggant in printing ink, according to the different requirements of each product, each colour system, addition is between 1%-5%.
The assembly of this technique have a UV light-curable ink of good print performance, the pigment that selection and UV colored ink are complementary and the diluent of oligomer and low-viscosity, improve simultaneously the dispersiveness of printing ink, reduce the thixotropy of printing ink, make printing ink have good flowability and printability.
The typography that turns high-speed intaglio printing UV color series printing ink of taking turns of the present invention has the following advantages:
A) good drying property
The curing mechanism of UV color series printing ink is to be subjected to produce free radical behind the UV ultraviolet light irradiation by the light trigger in the printing ink, causes ink solidification, and radiation intensity is larger, and curing rate is faster.UV color series printing ink radiation intensity decays with the thin natural Exponents that is of black bed thickness, and ink film thickness increases, and curing rate just obviously descends.Also can there be certain impact in the depth of ink colors to illumination susceptibility curing rate.
Light trigger by the absorption spectrum of selecting absorption spectrum and pigment is complementary is close the absorption crest of light trigger and the absorption trough of pigment, and the more consistent light trigger of the dominant wavelength of selecting absworption peak and light source to send.According to pigment categories different in the printing ink (wherein blue series or dark system are the most special to the light trigger requirement), select composite photoinitiator preparation printing ink, make composite photoinitiator can fully absorb the ultraviolet light that light source sends, well improved the rate of drying of gravure UV colored ink.
B) good printability, owing to have good flowability, suitable viscosity, so printing ink of the present invention printability on printing machine is good, color is beautiful, shifts, dryly suit, can high speed printing.
C), transfer paper base material compound at gold and silver card, radium-shine, light beam paper etc. has good adhesive force.
D) good folding quality, crocking resistance.
E) the gold stamping adaptive of postorder processing is good.
F) when virtual package, possesses good water-mist-proof performance.
E) VOCs meets the industry limit standard.
The present invention has broken the limitation that the UV colored ink can only be applied in offset printing, wire mark, flexo, ink-jet field, for brand-new approach has been started in the application of UV colored ink, make the Modern Printing Enterprise a kind of mode of production of efficient, environmental protection arranged, reached and not only enhanced productivity but also the doulbe-sides' victory pattern of energy-saving and emission-reduction.
The below further describes as follows to Relational Questions in this technique, the applicant has carried out assembly to gravure UV colored ink, enables to satisfy production requirement.
1) wheel turns the characteristic of high-speed intaglio printing UV colored ink
UV painting printing ink and UV offset ink all are to print under the lower-speed state, be easy to reach fully to solidify, and the UV gravure colored ink of this technique China ink layer are more abundant and be a kind of printing ink of high speed printing, and the higher speed of a motor vehicle has determined the dry difficulty of printing ink.Usual vehicle type gravure ink belongs to effumability printing ink, and so-called volatilization refers to that the fluid molecule energy reaches the process that breaks away from attraction between fluid molecule and overflow.The dry run of solvent type photogravure printing ink is exactly to utilize this specific character of liquid, and the solvent in the wet ink film is overflowed, and becomes solid-state volatilization process by liquid state.And the solidification process of UV colored ink is a photochemical reaction process, and namely under the effect of ultraviolet light, the photoactive substance generation chemical reaction in the UV printing ink causes printing ink polymerization, crosslinked, thereby makes UV printing ink moment be become solid-state by liquid state.Because recessed ink layer is thicker, and the printing speed of a motor vehicle is very fast, therefore, the UV colored ink can in the gravure high speed printing, use and the difficulty of the fine photocuring of energy larger.After the gravure ink printing, require printed matter figure line dry rapidly, just can enter next procedure.Rate of drying all has decisive influence to tone, the smell of printed matter.
Compare with usual vehicle type printing ink, complicated chemical reaction need to occur in gravure UV colored ink dry run, and prepolymer, diluent, light trigger, pigment, outside ultraviolet ray intensity etc. all can produce significant impact to the dry run of UV colored ink.With respect to the colourless gloss oil of gravure UV, contain the pigment of certain content in the gravure UV colored ink, different colours is different to the absorption intensity of ultraviolet light, and color is darker, and absorption intensity is larger.Moreover the high-speed rotary gravure press machine speed is very fast, and more than 100m/min, this only has 0.4-0.7S with regard to meaning printing in the time of staying under the ultraviolet light at least, and this also has higher requirement to the rate of drying of printing ink.Affect the many factors that ink setting relates to, this just requires, and comprehensive various factors is whole, balance is considered.
2) printability of the recessed UV color ink of wheel
The applicant has furtherd investigate the principle of compositionality of UV printing ink, the Practical Design development meets the UV colored ink of high-speed rotary gravure press, the viscosity of its printing, colour saturation, flowability, drying property, (behind the seal) can gold stamping property, antifog property etc., can reach the set 130-180M/min speed of a motor vehicle, also will reach the packing instructions of wraparound equipment simultaneously.
3) the recessed UV color ink production method of wheel
The applicant has studied the associated production technical parameter standard that every and product are complementary, that is: the coupling degree of depth, the postorder material of the control criterion of printing ink and the control criterion of adjusting control method, printing condition, forme and the accordance etc. of thermoprint parameter, production turn around time and postorder rapidoprint is set.
Need the key issue that solves in the application's the technique
The technological difficulties outstanding behaviours that is applied to the UV-curing gravure ink of packages printing is: 1, intaglio printing is for directly shifting, and ink viscosity is very low, and flowability must be very good, and performance preferably can be near Newtonian fluid, and traditional material can't meet the demands; 2, packaging product is very high to the requirement of printing, and to saturation degree, on the spot levelling, dot reproduction, tool setting line, hangover, the defective such as floating dirty etc. requires all very high, and be very high to the requirement of ink transfer energy, printability; 3, the intaglio printing press speed of a motor vehicle of packages printing employing is all higher, requires ink setting speed very fast, thorough doing when namely requiring surface drying; 4, packages printing must be satisfied it to the requirement of VOC, and benzene must not detect, and toluene is lower than 0.5mg/m
2, ethylbenzene, dimethylbenzene is lower than 0.25mg/m
2, acetone, butanone, 4-methyl-2-ketone are lower than 1.0mg/m
2, and these organic matters all are small molecular weight material that traditional photoinitiator very easily produces in course of reaction, must be controlled; 5, the film forming crosslink density is very large behind the ultraviolet light polymerization, and the ink film case hardness is high, and the gold stamping realization difficulty of after-processing technology is larger.
1) the dry problem of curing of solution gravure UV colored ink high-speed press
The curing mechanism of UV printing ink is to be subjected to produce free radical behind the UV ultraviolet light irradiation by the light trigger in the printing ink, causes ink solidification, and radiation intensity is larger, and curing rate is faster etc.UV printing ink radiation intensity decays with the thin natural Exponents that is of black bed thickness, and ink film thickness increases, and curing rate just obviously descends.Also there is certain impact in the depth of ink colors to illumination susceptibility curing rate.
The use of UV color ink in industry is used for offset printing, silk-screen, flexo etc. substantially.Offset printing UV colored ink is example: 9000/hour (it is 92m/min that the speed of a motor vehicle of 787mm * 615mm) is converted to the gravure speed of a motor vehicle, and flexo is taken second place, and silk-screen is then lower.Packaging product uses molten Ji type printing ink at present, and the production speed of a motor vehicle is all at 130-180M/min.Requirement is not changing under the production equipment efficiency term, and what make UV look China ink can finish-drying under the speed of a motor vehicle of high speed rotary press 130-180M/min.
Because the optical transmission window wavelength of pigment is larger in the look China ink, according to pigment categories different in the printing ink, mainly select free radical crack type photoinitiator (α-amine alkylbenzene ketone initator) to cooperate the thioxanthone initator in the printing ink that this programme uses, the absorption spectrum of this photoinitiator absorption spectrum and pigment can mate preferably, the absorption crest of light trigger and the absorption trough of pigment are close, and have well improved the rate of drying of gravure UV colored ink.
2) printing ink can gold stamping index
After the solid quality of the light-cured resin that UV printing ink uses and series monomer light, its film forming and wearability are good, surface brightness and flatness are high, bronzing material is required height, in the prior art, realize on all UV printing ink that directly gold stamping technology difficulty is larger, need special bronzing material to be complementary with it, this also be printing industry just in the difficult problem of joint research, therefore, the gilding technology index also is the key issue that needs to be resolved hurrily.
By adding a certain amount of urethane acrylate, improve the gentle a piece of wood serving as a brake to halt a carriage of printing ink, reduce crosslink density, measure not too large, can ensure simultaneously polymerization speed again, well solve on the UV printing ink and be difficult for a gold stamping difficult problem, use conventional bronzing material just can satisfy the actual production requirement.
3) the printability key issue of gravure UV look China ink
When UV colored ink attribute is low pigment content, can make (the UV ink-jet of the low printing ink of good fluidity viscosity, the silk-screen China ink), and during high pigment content, can only make almost immobilising printing ink (UV offset ink) of high viscosity, and the printing attribute specification of (wheel turns) gravure UV colored ink guarantees low viscosity under high pigment content at a high speed, to guarantee higher flowability, this has very large difficulty, particularly the difficulty under (130-180M/min) needs adaptation high speed machine condition also is very large, therefore, wheel recessed (at a high speed) UV colored ink does not also obtain new breakthrough in the printing-ink field.Simultaneously, gravure UV look China ink is compound at gold and silver card, radium-shine, light beam paper etc., to shift on the special base material of stationery adhesive force not good be the difficult problem of prior art; The water smoke problem that gravure UV look China ink all can not be taken into account simultaneously in the gold stamping adaptive of folding quality, crocking resistance and following process etc., the high brightness high-flatness of UV ink characteristics brings to wraparound also needs to solve.These many indexs have required all to strengthen the technical difficulty of UV colored ink research, and these are that we break through printing technology UV colored ink frontier key issue and research power.
For making ink viscosity can do very lowly, adopt the very low diluent of viscosity in this ink formulations, be mainly the extremely low bifunctional acrylate of absolute viscosity, such as the hexylene glycol double methacrylate, to reduce ink viscosity.Diluent plays a part wetting pigment, dilution and adjusting ink viscosity, is determining simultaneously curing drying and the filming performance of UV printing ink.The kind of diluent and design feature thereof directly affect the rheologic behavio(u)r ink-water balance of UV printing ink, thereby affect the printability of printing ink.Ink viscosity of the present invention can be accomplished very low, meets the viscosity requirement that gravure is produced, and printing ink of the present invention is the hundreds of centipoise, and conventional printing ink is several ten thousand to the hundreds of thousands centipoise.This technique also adds PE wax (Tissuemat E) in printing ink, particle diameter has solved the requirement of printing ink water-mist-proof at the 10-20 micron.
The applicant determines the forme parameter index
Explore by upper machine checking, in conjunction with the characteristic of the high and low viscosity of gravure UV color ink pigment content, by the forme parameter of the different engraving modes of engraving different depth, sum up the forme parameter with the printing ink coupling.Printability, ink color, the solidification rate of the suitable dark decision printing ink of version, the optimum depth of having determined gravure by drawing a design is 23-28 μ m.
The applicant has established the conditional parameter of printing ink uv equipment
With conventional solvent type photogravure ink printing different be that what the present invention used is a kind of UV photocuring colored ink, must utilize the UV light source to carry out ink solidification.Under goal-selling speed of a motor vehicle state, operate to the basis with the UV light source full and down that installs additional, check the curing performance of UV printing ink, determine the power of UV lamp group, and the dry solidification energy of UV color ink.At equipment 3 UV high-pressure sodium lamps are installed at first, because test is the dark blue printing ink of the darker UV of a kind of color, under the prerequisite that ensures the printing ink good solidification, the speed of a motor vehicle can only reach 100 meters/min, after increase again on this basis 2 UV fluorescent tubes, when the speed of a motor vehicle was up to 150-180 rice/min, UV printing ink can fully solidify.
The applicant verifies other performance of printing ink
Study and put into practice (upper machine) checking by printing ink, determine the Specifications of ink printability requirement: the related physical index of the gold stamping adaptive of the anti-fog performance of folding quality, crocking resistance, packing, following process, color reducibility and printing ink check.
Through repeated multiple times upper machine test in the more than a year time, and the problem that occurs is improved targetedly perfect, finally determined the compositing formula of UV printing ink; Continue to optimize at typography, equipment, make wheel turn gravure UV colored ink typography and can be achieved the successful implementation volume production.
Brief description production implementation process
1, printing ink is uncapped and is stirred rear injection heating China ink cylinder (heating when temperature is low), and the printing ink actual temperature is controlled at 30-45 ℃ (thermometer measure).
2, when replenishing printing ink, deployed printing ink slowly joins in the black cylinder of the master who works online with having heated also in another secondary heated ink cylinder for subsequent use.The ink temperature of secondary black cylinder is consistent with main black cylinder ink temperature.
3, because containing the defogger composition in the printing ink, the interior circulation valve of black cylinder is set to open fully, is beneficial to the antifoggant Uniform Dispersion.
4, ink printing viscosity is controlled at 14-17 second.Add diluent when viscosity is high.
5, according to the requirement of product water-mist-proof, can add an amount of antifog auxiliary agent PE wax, particle diameter 10-20 micron, addition is at 1%-5%.
6, the speed of a motor vehicle is controlled, the speed of a motor vehicle is at 130-180 rice/min, and the too fast speed of a motor vehicle can be brought the not thorough hidden danger of drying.
Claims (8)
1. a wheel turns the typography of high-speed intaglio printing UV color series printing ink, turns high-speed gravure press printing with wheel, it is characterized in that:
(1) adopt electronics or laser engraving gravure, version is dark between 23-28 μ m;
(2) set up the UV drying system at intaglio printing press;
(3) the special ink cylinder of employing energy temperature control: heating jacket (13) is set outside the black cylinder (9) printing ink is heated, heating tube (14) is set in the heating jacket (13), heating tube (14) is connected with temperature controller (15), and jacket temperature is controlled at 30-45 ℃; Interior recirculation ink pipe (10) bottom of China ink cylinder (9) arrives 1/3 place, bottom of black cylinder (9), and outlet is set to the bent tube form at 90-70 degree angle, makes the interior printing ink of black cylinder (9) form transverse annular along black cylinder (9) and flows; The outlet of ink reclaiming pipe (7) lower end is arranged on contiguous black cylinder (9) bottom;
(4) adopt ceramic doctor blade (3) at intaglio printing press, its base material is the carbon steel of ultra-fine carbon alloy molecule, and steel surface is coated with ceramic release coating;
(5) ink printing viscosity was measured with flow cup Rigosha3# cup in 14-17 second;
(6) add antifoggant in printing ink, addition is the 1%-5% of total weight;
(7) described UV color series printing ink is comprised of following component and percetage by weight:
Acrylic ester oligomer 5-18%;
Diluent 44-85%;
Light trigger 3-15%;
Pigment 5-20%;
Wetting levelling defoamer 0.1-2%;
Polymerization inhibitor 0.1-1%.
2. the typography that turns high-speed intaglio printing UV color series printing ink of taking turns according to claim 1, it is characterized in that: described black cylinder (9) is set to two, two black cylinders (9) are heated simultaneously and are kept needed temperature, a black cylinder (9) is online to be used, and another black cylinder (9) is used for storing and adding printing ink.
3. the typography that turns high-speed intaglio printing UV color series printing ink of taking turns according to claim 1, it is characterized in that: described antifoggant is Tissuemat E, particle diameter is 10-20 μ m.
4. the typography that turns high-speed intaglio printing UV color series printing ink of taking turns according to claim 1, it is characterized in that: described diluent is the hexylene glycol double methacrylate of the extremely low difunctional of absolute viscosity.
5. the typography that turns high-speed intaglio printing UV color series printing ink of taking turns according to claim 1, it is characterized in that: described light trigger is the light trigger that its absorption trough that absorbs crest and pigment is close, and blue series UV color series printing ink is selected the free radical crack type photoinitiator: α-amine alkylbenzene ketone initator is or/and the thioxanthone initator.
6. the typography that turns high-speed intaglio printing UV color series printing ink of taking turns according to claim 1, it is characterized in that: described wetting levelling defoamer is organic silicon modified by polyether type defoamer.
7. the typography that turns high-speed intaglio printing UV color series printing ink of taking turns according to claim 1, it is characterized in that: described polymerization inhibitor is nitroxyl oxides of free radical inhibitor.
8. the typography that turns high-speed intaglio printing UV color series printing ink of taking turns according to claim 1, it is characterized in that: described acrylic ester oligomer is the polyacrylate with side chain carboxyl group.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010203335 CN102275395B (en) | 2010-06-12 | 2010-06-12 | Printing technology of rotary high-speed gravure UV colorful ink |
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| CN 201010203335 CN102275395B (en) | 2010-06-12 | 2010-06-12 | Printing technology of rotary high-speed gravure UV colorful ink |
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| CN102275395A CN102275395A (en) | 2011-12-14 |
| CN102275395B true CN102275395B (en) | 2013-03-27 |
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| CN105196722A (en) * | 2015-09-30 | 2015-12-30 | 江苏琛亚印材科技有限公司 | Method for improving adhesion between paper and printing ink |
| CN109109458B (en) * | 2016-10-21 | 2021-04-30 | 杭州琛恒科技有限公司 | Ink control device for cable |
| CN107745577A (en) * | 2017-11-21 | 2018-03-02 | 武汉红金龙印务股份有限公司 | A kind of gravure line snowflake technique and its cure system |
| CN110406281A (en) * | 2019-08-26 | 2019-11-05 | 江苏瑞好科技有限公司 | A kind of printing process of gravure refractive power shading |
| CN111037471A (en) * | 2019-12-06 | 2020-04-21 | 蒙娜丽莎集团股份有限公司 | Preparation method of color-spray UV (ultraviolet) bright ceramic board painting |
| CN112477420B (en) * | 2020-12-23 | 2022-04-05 | 陕西金叶印务有限公司 | Outer top china ink groove device that floats with temperature control system |
| CN114379218B (en) * | 2022-01-07 | 2023-04-28 | 杭州爱森装饰材料有限公司 | Constant-temperature circulating ink tank and decorative paper printing process using same |
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| CN2536393Y (en) * | 2002-04-15 | 2003-02-19 | 上海紫明机械有限公司 | Photogravure press for UV decorative inks |
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