Method and device for flexographic printing using energy-hardened liquid paints

FIELD: method and device for colored flexography.

SUBSTANCE: method for applying multiple paint layers onto a substrate includes following stages: application onto a substrate of at least one painting layer of energy-hardened liquid paint with viscosity less than approximately 4000 centipoises, and including reaction-incapable paint thinner, where applied layer of energy-hardened paint has first viscosity; evaporation of at least a part of reaction-incapable paint thinner from applied paint layer for increasing viscosity of applied layer of energy-hardened paint; application onto substrate and applied layer of energy-hardened paint with increased viscosity of at least one layer of non energy-hardened liquid paint, viscosity of which is less than increased viscosity of previously applied layer of energy-hardened paint; and drying of both paint layers on the substrate. Another variant of method for applying multiple paint layers onto a substrate is differentiated by applied layer of energy-hardened paint having to be of increased viscosity compared to following layer of energy-hardened liquid paint with viscosity less than approximately 4000 centipoises, and containing reaction-incapable paint thinner, where viscosity of following layer is less than increased viscosity of energy-hardened paint layer applied beforehand. Also a method is suggested for printing multiple paint layers on a substrate, which includes stage of selection of first and second energy-hardened liquid flexography paint, where each paint contains viscosity controlling reaction-incapable paint thinner, consisting of water in amount of from 5% to 50% of thinner weight, where each paint has viscosity approximately ranging from 30 to 70 centipoises, and stage of serial application of first and second energy-hardened liquid flexography paint onto a substrate to create first and second paint layers, having overlapping parts, where second paint is applied only after at least a part of paint thinner is evaporated in first paint layer. Device for serial application of multiple overlapping paint layers onto a substrate contains substrate route and substrate drive for moving the substrate along a route, where paint application sections are adapted for applying paint onto substrate, which paint includes reaction-incapable paint thinner and has viscosity less than 4000 centipoises, and also management system, which manages transportation of substrate along a route. Viscosity of first layer of liquid paint, applied onto a substrate in one of paint sections, is increased due to evaporation of at least a part of paint thinner from first paint layer to higher viscosity compared to viscosity of second paint, applied on top of first paint layer in next paint section, located at a certain distance from first paint section, up to viscosity, sufficient for "crude" application of second liquid paint layer during transportation of substrate between paint sections.

EFFECT: in suggested methods, relief printing is achieved without insignificant modifications of printing equipment.

4 cl, 2 dwg

 

The SCOPE of the INVENTION

This invention relates to a method and device for flexographic color printing and, more specifically, a method and associated apparatus for carrying out in practice of the method of printing in which ink is applied to another attack of the previous layer, known in the field of flexographic printing as printing "raw", using energy curable flexographic liquid paints.

PREREQUISITES TO the CREATION of INVENTIONS

The process of printing the multi-color prints usually requires a serial printing of multiple overlapping monochromatic paint layers. In order to achieve high-quality image reproduction, it is important to avoid transferring the applied ink layer on the subsequent print module. This transfer usually leads to cross-contamination of colors and the resulting poor colour.

Available technology solves this problem many different ways. The easiest way to prevent unwanted contamination of colors is drying each applied layer of paint before applying imposed on him the next layer of paint. Despite the effectiveness of this method, its major drawback is the need for complete drying of the paint after application of each is about the paint layer. Drying takes time and energy, which results in reduced productivity and increased production costs.

In order to expedite the printing process was developed print "raw". In this invention of printing "raw" is defined as the process through which the paint layer is imposed or inflicted in each of the colorful sections, not dried to overlay on top of the next layer of paint to create a color or visual effect. Print "raw" it is important to adjust the characteristics of stickiness overlapping layers of paint so that they differed from each other.

In offset printing "raw" is not a difficult problem, because the viscosity of the inks used in offset printing, is in the range from 20000 to 100000 SP. Such high viscosity paint, by their nature, have a wide range of characteristics of stickiness that can be used for printing "raw" without the need for drying paint layers between the colorful sections.

In recent years, has become a widely used type of printing which can print on various types of substrates, from cardboard and polyethylene to metal. This method of printing known as flexography or flexographic printing.

In flexography, use the SJ flexible printing form, having protrusions, which are covered with ink and pressed against the substrate to transfer the ink to the substrate. In the process flexographic printing ink is transferred from colorful box on the protruding surface of the printing form via an intermediate transfer roller, known in the existing technology called enyloxy shaft. Surface aniloxes shaft is covered with lots of tiny containers for paints, which are filled with paint of the colorful box and transfer it onto the flexographic printing form. Obviously, the high-quality print requires that the surface of the flexographic printing plate was covered with printing ink uniformly and evenly. This in turn requires that the cell aniloxes shaft were small, and that all biloxie cell each time was filled with paint from a colorful box to substantially the same level.

This requirement imposes restrictions on the flow, in other words, the viscosity of the ink. Viscous paint cannot be applied to enyloxy shaft as uniformly and evenly, and the surface of the flexographic printing plate can not be painted as uniformly. As a result of this paint suitable for use in flexographic printing, liquid paint, which typically have a viscosity of less than 2000 JV, preferably less than 400 SP

Existing regulations relating to solvent evaporation, led to the development of suitable for use in flexographic printing energy curable printing inks. These paints do not contain solvents and are fixed on the substrate not by drying, and by curing actinic radiation, such as ultraviolet radiation or electron beam. Sticky liquid flexographic inks is very low and cannot be adequately measured by conventional instruments. Their viscosity is typically in the range of approximately 30 to 50 JV. Although this viscosity range provides excellent flexographic printing, energy curable flexographic liquid inks for flexographic applications have a very low viscosity and can not be classified according to the degree of viscosity, and they need to be cured between the colorful sections in order to prevent confusion and retransfer of ink printed on the substrate, colorful cushions the subsequent sections. Such coupling curing costly, because it requires substantial modification of the equipment. Such curing is undesirable and from the industrial point of view because it increases the time that must elapse before applying a subsequent layer of paint in order to give to harden imposed before this colorful without any doubt the th layer, and thus slows down the printing process.

Considering the fact that when applying multiple overlapping layers of paint cross-contamination does not occur if each layer is imposed on top of the layer having a higher viscosity than that of the newly applied layer, printing "raw" was proposed in the field of flexographic printing without using energy curable inks. Layer the highest viscosity, so to speak, "captures", i.e. perceives, the second layer and the underlying layer back on the circuit module is not tolerated. However, given the existing range of viscosity inks for flexographic printing is becoming impractical, especially with increasing number of deposited layers, try to print the "raw" using for each new layer different colors with progressively decreasing degree of viscosity that is sufficiently different from the viscosity of each deposited before the layer. Essentially, for printing "raw" is not enough available of varying degrees of viscosity of the paint.

U.S. patent No. 5690028 tries to solve the aforementioned problem of the limited range of viscosity of the ink as applied to multi-color printing method of printing "raw" using paints, curing energy, which is particularly approach is t for flexo printing machine planetary type (Central Impression Flexographic printing Press). According to the patent, energy curable inks are heated before application to the substrate and applied to the substrate at a temperature higher than that of the previous layer of paint. As the temperature of the previous deposited on a substrate ink layer is lower than the hot paint, which must be applied or superimposed on top of it, the viscosity of the previous paint layer is lower than the viscosity of the applied paint. This difference in viscosity causes the paint with a lower viscosity unilaterally transferred to the paint with a higher viscosity, which prevents reverse ink deposits stay back trapping), and mixing paints.

Although this method of printing "raw" and achieves the desired result, it requires significant modification of all existing printing equipment for installation of the heating elements in each colorful sections for heating the ink to its deposition on a substrate and, in addition, increasing the number of sections should also increase the temperature of the ink in each of the subsequent colorful sections. Thus, in order to prevent the necessity of increasing the temperature of the paint to levels that may adversely affect its properties may require cooling of the substrate or a decrease in printing speed.

Thus, still is in there is a need in the printing method "raw" energy curable flexographic liquid coating, which would need a minor modification, or there would be no modification of an existing printing equipment and at the same time, it would be possible to achieve high speed printing.

The INVENTION

According to this invention, it is proposed a method of flexographic printing multiple overlapping layers of paint on a substrate, which uses at least one energy curable flexographic liquid paint and the second paint of a different color is printed on top of it without pre-curing the first printed energy curable inks.

The method of applying multiple layers of paint on a substrate when printing "raw" includes, in the following order:

(a) applying on a substrate at least one paint layer of the energy curable liquid ink having a viscosity less than approximately 4000 SP and incorporating directionspanel thinner, and the applied layer energy curable ink has a first viscosity;

(b) evaporating at least part directionspanel diluent of the applied paint layer, which leads to an increase in the viscosity of the applied layer energy curable ink;

(C) applying on a substrate and a layer energy curable inks is increased viscosity of at least one layer neocoregames energy of liquid paint, whose viscosity is lower than the increased viscosity caused before this layer energy curable ink; and

(g) securing both paint layers on a substrate.

According to this invention, it is proposed a method of printing multiple paint layers on a substrate, comprising the step of selecting the first and second energy curable liquid flexographic inks, where each of the inks contains directionspanel diluent in the amount less than 50 wt.% on the weight of diluent, and each ink has a viscosity of less than 4000 SP, preferably from about 30 to 70 SP, as well as the stage of the sequential application of the first and second energy curable liquid flexographic inks on a substrate for forming the first and second paint layers having overlapping parts, and the second paint is applied after the first layer of paint will evaporate at least part directionspanel diluent.

Preferably, the diluent comprises water, which ranges from 5% to 50% of the weight of the diluent.

Preferably, in the proposed method, the stage And performed in the first paint section, and the stage is performed in the subsequent colorful section, and the substrate is transported between the first paint section and the subsequent colorful section at a rate sufficient to at measures the portion of the diluent in the paint layer could evaporate, thereby increasing the viscosity of the paint layer to a degree sufficient to ensure that he could perceive another paint layer applied to the layer with increased viscosity.

Preferably, the colored layer coated is exposed to a high temperature in order to facilitate the removal of at least part of the diluent with a higher speed than the speed of evaporation of the diluent at a temperature, pressure and humidity of the environment.

In one of the preferred options, colorful printed layer is exposed to air flow in order to facilitate the removal of the diluent with a higher speed than the speed of evaporation of the diluent at a temperature, pressure and humidity of the environment.

In one preferred options stage can be repeated at least once after step G by applying additional paint layer on the pinned layers of colour, with additional paint layer is also attached to the substrate.

In one of the preferred options stage And performed in the first paint section, and the stage is performed in the subsequent colorful sections, while the substrate is transported between the first paint section and the subsequent colorful section at a rate sufficient to man the necks least part of the diluent in the paint layer could evaporate, thereby increasing the viscosity of the paint layer to a degree sufficient to ensure that he could perceive another paint layer applied to the layer with increased viscosity.

In one of the preferred options, the hygroscopic substrate.

In one of the preferred options, the substrate is not hygroscopic.

In one of the preferred options, after step G is applied to at least one paint layer using energy curable liquid ink having a viscosity less than approximately 4000 SP, and includes directionspanel diluent comprising water.

For the implementation in practice of printing "raw" according to this invention also proposes a device for the sequential deposition on a substrate of numerous overlapping layers of paint, in which at least one of the paint layers is an energy curable liquid paint containing directionspanel diluent and having a viscosity of less than 4000 CPs. The device includes:

(a) the route of the substrate and the actuator substrate to move the substrate along this predetermined path;

(b) the set of sections to paint along the predetermined route, and sections for paint adapted to be applied to the substrate g is at, incorporating directionspanel diluent and having a viscosity of less than 4000 SP; and

(C) a control system that controls the transportation of the substrate along the route so that the viscosity of the first layer liquid coating that is applied to the substrate in one of the most colorful sections, is increased due to evaporation of at least part of the diluent from the first paint layer to a higher viscosity than the viscosity of the second ink applied over the first ink layer in the subsequent colorful sections, some distance from the first paint section, up to a viscosity sufficient for the application of "raw" second liquid paint during transport of the substrate between the colorful sections.

According to the present invention, the stages of the serial printing of paint layers can be repeated many times, using multiple consecutive prints of energy curable inks and each time before printing the next layer of paint allowing at least part of the diluent to evaporate from the printed layer to increase its viscosity.

Further, and in accordance with the present invention, it is proposed a method of increasing the viscosity of the paint layer on the substrate by evaporation of at least part of the diluent from the printed layer energy curable inks, and Yes the tion method can be accelerated by applying high temperature and passing a flow of air over the coated printed ink surface between successive operations of the paint application.

BRIEF DESCRIPTION of DRAWINGS

The figure 1 shows a flexographic printing machine for printing "raw", constructed according to the present invention.

The figure 2 shows an alternative device for printing "raw" according to this invention.

DETAILED description of the INVENTION

If it would be presented in a relevant, the invention will hereinafter be described with reference to figures.

Figures are provided to facilitate understanding of the invention, and therefore they show only those elements that are required for understanding, and all images of the equipment is not drawn to scale and are not intended image actually used commercial equipment.

The present invention relates to a new method of printing with the application of energy curable liquid flexographic inks on previous wet paint layer in the technological field of flexographic printing in which ink are preferably made according to a certain recipe, energy curable aqueous phase compositions, such as compositions disclosed in concurrently filed Provisional patent application U.S. under serial number 60/380081, registered on may 6, 2002, entitled "single-Phase energy curable compositions, water-based, full soda is the content of which is expressly incorporated herein by reference. Can also be used by other, non-aqueous, compositions with similar characteristics. Unlike other flexo inks, water energy curable flexographic liquid ink described in the above-mentioned parallel application, characterized by minimal change stickiness after drying, and yet give the change in viscosity, which is sufficient for printing "raw" on flexo printing machine as described below.

Such curable single-phase energy flexographic liquid paint compositions are composed of one, three or four components and containing a resin, which may be neutralized with an acid or a base, as well as directionspanel diluent such as an organic solvent, water or a combination thereof. Directionspanel diluent is used to control the viscosity of these inks.

Single-phase compositions suitable for printing in accordance with this invention, otverzhdajutsja under the influence of energy. The term "energy curable composition" herein refers to compositions that polymerize or undergo chemical crosslinking under the influence of the energy source of actinic radiation such as ultraviolet radiation (UV)radiation (e-beam), etc. In this the paper, the term "ultraviolet radiation" includes radiation, having the wavelength range from about 190 nm to 500 nm and preferably from about 200 nm to 420 nm. Actinic radiation of this type can be obtained from various sources, for example, using mercury arc lamps, xenon arc lamps, fluorescent lamps, monochromatic laser sources and the like, the Irradiation of the electron beam it also includes high-energy electrons, such as electron discharge devices or electron-beam devices, which typically operate in the range of 70˜200 kV and typically emit radiation in the range of 1˜4 mrad.

In one embodiment, the implementation of the paint compositions suitable for use in the present invention, as directionspanel diluent is water. However, there may be used a composition containing other directionspanel diluents such as alcohol and mixtures of water with alcohol, as well as any other suitable diluent, giving the evaporation sufficient to cause evaporation of a sufficient amount of diluent within a reasonable period of time between the application of successive layers of paint so that the viscosity of each applied layer of paint was increased sufficiently as compared with the viscosity of newly applied paint layer ináorder so that he could "capture", to take again the printed layer and thereby create a color or visual effect. From a practical point of view it is highly desirable application of the energy curable ink composition is water-based, as it meets the requirements of regulations on the protection of human health and the environment, limiting the number of solvents emitted into the environment. In this regard, the present invention will be described on the example of the paint compositions, water-based, because the use of such compositions most likely. This restriction of the description, however, should not be regarded as limiting its scope; in addition, radiant energy curable inks with a similar set of parameters, the viscosity of the ink and comparable characteristics evaporation directionspanel diluent are considered to be within the scope of the present invention.

The method proposed in the present invention for the application of numerous and at least partially overlapping layers of paint on a substrate, based on a quick and relatively substantial change in the viscosity of energy curable liquid flexographic inks (which may be a water-based paint containing the diluent, for example water) after overlay is a layer on a substrate. Substrate suitable for use in the present invention may contain applied to this layer. As for the paint layers applied in the framework of this invention, each layer of paint is placed on the substrate in the ink section. Colorful sections as many as there are individual inks used for printing a color image. Each colorful section of the paint is transferred from colorful mailbox through enyloxy shaft on the flexographic printing form, for example, on a printed form of the polymer material Cyrel® manufactured by DuPont (E.I.Dupont de Nemours and Company, Inc.). The paint is then transferred from the printing plate to Krasnopolyanskaya substrate, for example, on nephroscopes cloth or sheet of plastic film, or any other hygroscopic or nephroscopes substrate on which can be printed with flexographic printing form.

The initial viscosity is imposed on the substrate flexographic liquid paint is typically less than 4000 SP and preferably less than 1200 SP, although depending on the particular application of printed products used is the viscosity of the ink can be and 2000 SP. As mentioned above, the low viscosity is preferred to achieve good Krasnoperova of colorful mailbox through enyloxy shaft on the surface of the printed fo the us.

Once the substrate is coated with ink, starts to evaporate directionspanel diluent. The evaporation rate depends on the selected directionspanel diluent, as well as from external conditions such as temperature, atmospheric pressure and relative humidity. Evaporation also contributes to the rapid increase in surface area of the applied paint or coating layer and use enhanced air circulation above the paint layer, deposited on a substrate, including air blown over the substrate, and the use of high temperatures that are generated either by heating the stream of forced supplied air, which is blown over the substrate, or by using infrared lamps, etc. depending on the selected printing ink, removing even a small amount directionspanel of diluent could lead to significant and relevant to the purposes of the invention the viscosity of the paint imposed paint layer.

By the time when the paint layer reaches the next colorful sections, where on a substrate, and at least some part of the pre-imposed layers of paint, and sometimes the whole layer is imposed another layer of paint, usually a different color, ink viscosity imposed paint layer is increased to a sufficient step is not for the perception that the paint layer without retransfer newly imposed paint, having a viscosity generally in the same range as the previously imposed paint at the moment of its imposition. In this regard, by selection of energy curable inks containing small amounts of regulating the viscosity directionspanel diluent, such as water, printing "raw" numerous layers of paint can be implemented without having to modify the viscosity of the ink by heating the ink or cooling of the substrate containing the layer of paint between the colorful sections, or by curing of the paint between the colorful sections.

According to the present invention, after application of all paint layers for fixing all the deposited layers rather than one stage of curing with the use of appropriate energy source for curing.

This printing process "raw" is not limited to the use of energy curable flexographic liquid paints and may include the use of at least one paint layer paint, which is not cured in energy. So for example, may be applied to the layer of energy curable flexographic liquid paint type, and then, after coating the layer on the substrate, may be applied to the layer neocoregames energy liquid flexographic inks having a viscosity of less than increased (as a result of evaporation always the or part of the diluent), the viscosity of the first layer. As already mentioned, to carry out printing "raw" allows the difference of viscosities. If the second layer is located at the top or is the last printed layer, all the layers of colour can then be solidified and dried using conventional means and methods of drying so as to simultaneously fasten imposed colorful layers on a substrate.

Another variant implementation of the present invention involves the use of printing technology "raw" of the present invention for applying at each other several curing energy and conventional paint layers. For example, as described above, the first energy curable ink having a first viscosity, can be applied as the first layer. To form the second layer in the subsequent colorful sections on the layer with increased viscosity can then be coated with the layer normal ink having a lower viscosity than the increased viscosity of the first ink layer. The third layer can then be deposited on the second layer using the second energy curable ink having a lower viscosity than the viscosity of the second layer. The viscosity of this layer will also increase as evaporation directionspanel diluent prior to arrival in the following colorful section. In the colorful fourth section of the fourth layer can be NAS the Saint on the third layer using another energy curable inks, having a lower viscosity than the increased viscosity of the third layer. The conventional paint layer may be subjected to drying, if the viscosity of the layer normal paint is so low that the energy curable inks with lower viscosity not available. Thus, the process of the present invention can be implemented in the form of a kind of "hybrid" process using different combinations of colors, in which only a certain number of paint layers applied by printing "raw" with gradation viscosity according to this invention, and in which some other colorful layers are dried or otverzhdajutsja before applying additional layers of paint. Although such a hybrid process is possible and is within the scope of the present invention, it is less efficient than the process in which all the applied layers - layers of liquid energy curable flexographic ink.

The Figure 1 shows the device according to the present invention. Shown in this figure, the device 10 is similar to the printing machine of planetary design, which is often used in the flexographic printing industry for printing images that contain many layers of paint that have at least some overlapping covered with printing ink areas. Because the technology is designed and the Oia such devices are well known in the existing technology, we will discuss here only those items that were included in this device in order to turn a standard printing machine planetary design in flexographic printing machine capable of printing a "raw" with a drawing of overlapping layers of liquid paint.

As shown in Figure 1, the device 10 includes a supporting substrate is a cylindrical drum 12, which has an outer peripheral surface 14. Around the peripheral surface 14 of the drum 12 posted several colorful sections 18, which are located at some distance from each other along its surface. Although shown three such sections, this number is used here only for illustrative purposes, and around the drum without deviation from the scope of this invention to accommodate both smaller and larger number of sections.

Each inking unit includes a colorful box 20, colourful roller 22 and the platen for printing plates 24. Colorful cushion preferably is enyloxy shaft and positioned to pick up the paint from colorful box and transfer it to the printing plate mounted on the printing platen. Printed roller positioned relative to the drum 12 so as to apply a layer of paint on canvas 16 of the drum 12 at the contact points "A", "b" and "C" respectively shown for each s the AI. Colorful sections described here is of the type well known in the existing technology and are typically used in printing machines planetary design, so there is not given any further explanation except to mention that this inking unit must be able to work with liquid ink having a viscosity significantly lower than 4000 SP.

Section for curing energy is preferably placed along the route of the blade 16 around the drum 12 at a point after the last colorful section. Such sections curing is also well known in the existing technology and do not require further explanation except to mention that when you select the section of curing for use in accordance with the present invention this section must have radiated energy type required for curing the liquid inks used in the implementation of the present invention.

Supporting substrate, the drum 12 rotates at a rotation speed ω rpm, using the actuator, which may include a belt 36 and the pulleys 32 and 34 driven by the engine 30. This drive allows you to change the speed ωfor example, by changing the relative size of the pulleys 32 and 34, or by changing the frequency of rotation of the pulley 32 driven by motor 30. Shows the drive is the La illustrative purposes and is not limiting the invention element, and within the scope of the present invention can be used with other known existing technology drives designed to change the speed of rotation of the drum 12, including a direct connection of the motor with a variable speed of rotation of the drum or the connection of a drive motor with the drum through the gearbox, and so on.

In accordance with the present invention, this device also equipped with a control system, generally represented by the Central point 28 of the control of local devices 26 management and user interface 40. This management system is used to control the device so that the viscosity of the first layer of liquid paint applied to the canvas 16 in the first paint section 18 at the point "a"is increased by evaporation of at least part directionspanel thinner to a viscosity greater than the viscosity of the second ink, which must be applied thereto in the subsequent colorful sections 18' at point "B", i.e. to viscosity sufficient for printing "raw" second liquid paint.

The control system can achieve this result a number of different ways. The easiest way is to install all the colorful sections 18, 18' and 18" around the drum 12 at a certain angular distance, θ1that θ2etc. System the EMA management in this case regulates the speed of rotation ω drum depending on the time required for the desired viscosity changes by evaporation layer applied at point "A", so that the layer applied at point "A"has reached the point "B" with a viscosity high enough to print on wet paint layer applied on top of it at the point "B".

The required time depends on the necessary changes in the viscosity, which depends on the type of liquid paint used in these two colorful sections, the thickness of the layer applied in the first paint section, and from the environmental conditions that affect evaporation. It can be determined experimentally for different colors and thickness of the applied layer of paint. The data should preferably be obtained prior to the draw and they must be in the possession of the operator of the device.

These data can be stored in the electronic memory (part of block 28), which is part of the control system and indexed according to the type of paint used in each colorful sections, and thickness of the paint layer, which will be applied in each colorful section. Thus, the operator can easily access information about the frequency of rotation by entering into the control system via the interface 40 of the type of paint and the thickness of the layers of paint that will be applied in colorful sections 18 and 18'.

When and who use more than two colour sections, most likely in the case of commercial printing, such a control system can be programmed to calculate the average speed of the drum 12, which will provide transportation of the cloth between the sections 18, 18', 18", etc. for the time needed to colorful layers has reached the desired evaporation necessary to achieve the proper viscosity increase for printing "raw" in all the colorful sections.

The control system may also include a movable colorful sections which can move along the transportation route of the blade along the surface of the drum, thereby changing the angular distance θ1that θ2etc. between sections. Such a change can be made manually or provided automatically in each colorful sections with individual quotation actuator 26, which is an integral part of the control system.

The control system can also include a variable speed drive and adjustable quotation drive, so that could be adjusted as the distance between the colorful sections, and speed ω drum in order to satisfy the requirement that the viscosity of each imposed paint layer was increased sufficiently by evaporation to such an extent that the paint layer could vospire the ü imposed on him the next layer of paint.

The control system in such a design may contain stored data about the change in viscosity. These data are indexed in such a way that the operator receives information about the distance between the sections and the rotation speed after entering the type of paint and the desired thickness of the applied layer for each draw. As is well known in the existing technology, this can be easily done using a specially programmed Central processing unit (CPU), input device type keyboard, memory, and display device information. In an alternative control system, the CPU can control directly as the frequency of rotation of the drum, and mechanism for positioning colorful sections, using, for example, associated with colorful sections of the adjusting actuator 26, based on the input data regarding the colors and the thickness of the layer that you want to use.

As a possible variant, between the colorful sections can be placed elements 42, which evaporate directionspanel diluent. Such elements may be heating elements, ventilation elements, or combination thereof, and does not include routine equipment for recovery of volatile solvents, typical coupling dryers in the existing technology. In contrast to the necessity to the use of intersection of the drying elements in the existing technology, these items are offered as an additional option for use in conjunction with this invention and can be used to accelerate the evaporation process for increasing the viscosity of the applied paint layer in the process of transporting layer between the colorful sections. Because such elements, if any, require space, consume energy and tend to warm the surface of the drum, the process is preferably carried out without such elements. The result of this is made in accordance with this invention, the equipment has a construction in which the diameter is equipped with a number of printing sections of the drum can be reduced, and the number of printing units around having a certain diameter of the drum can be increased. In addition, the drum does not require special cooling drum, typical of existing printing machines of the planetary type, which it superficially resembles. Equipment manufactured in accordance with the present invention, would also change the structural material of the drum, which is generally made of metal or metal alloy, materials such as polymer composite materials or molded articles made of polymers, and thereby significantly reduce the weight and cost of ornago cylinder planetary type.

The equipment is manufactured according to the present invention, need not necessarily be similar to the printing machine of planetary design, shown in Figure 1, and as shown in Figure 2, the present invention can be implemented using linear printing machine of the type that includes many krishnasamy presses or colorful sections 44, each of which includes the basis for the substrate or the supporting roller 46 that is associated with the actuator 48 and the shaft for printing plates 50, which rotates in contact with the surface of the substrate. Krasnopolye shaft 52, for example, aryloxy shaft is used to transfer paint from a colorful box 54 to the printing plate mounted on the shaft to form 50.

The substrate goes through lots of guide rollers for the fabric 56 and 58 on route 60, resulting in the substrate is sequentially passed through a number of colorful sections 44 of the type described. Guides the rollers may include rollers for guiding the blade 56, which preferably are contactless rollers for changing the direction of blade type rods with blowing air. Such contactless rollers or rods with the blowing of air is known in the existing technology and do not need further explanations. See, for example, U.S. Patent No. 5640784, which describes a contactless is the leader of the dryer fabric to support the way air flotation.

As previously described in connection with Figure 1, the printing device shown in Figure 2, also includes a system 62 control that can be used to change the speed of transport of the substrate so that the substrate has arrived in different sections to paint 44, 44' and 44" after this amount of time after application of the paint layer, which enough of the applied paint layer was evaporated directionspanel diluent in an amount sufficient to make the viscosity of the applied paint layer has increased sufficiently for the perception of subsequent damage to the paint layer upon arrival substrate at point "a", "b" and "C". As described above in connection with Figure 1, this speed can be changed by using motors with variable speed, which carry out the transportation of cloth, or by changing the gear ratio in the drive blade. This speed can be set manually or automatically, and preferably is based on pre-calculated tables showing the relation between the change in viscosity depending on the thickness of the coating, the type of paint used and, as one of the possible options, the surrounding conditions.

In addition, as described in the case of the device shown in Figure 1, systems of the 62 control may include a method of changing the length of the route between the sections. This can be achieved by creating conditions in order to manually adjust the distance that the substrate passes between the colorful sections, for example, by raising the roller 58 or placing colorful sections at a greater distance from each other. The roller 58 may be raised by the control system automatically by means of the piston 68 or other similar method. Alternatively, the inking unit can be mounted on the guide frame (figures not shown) to slide along the route of the substrate. Such mechanical construction is well known in the existing technology.

In practice, the fabric substrate is passed through numerous sections to paint with the help of the device shown in either Figure 1 or Figure 2. Before beginning the process of applying the paint, the operator determines the time required for the viscosity of each of the applied paint layer was increased to the desired level for printing "raw" after applying the layer on the substrate and before applying the next layer on top of it. The operator determines this time based on the change in viscosity for each ink under certain external conditions in the process of applying the paint. This is best done using a table of pre-established data that can be stored in the form size is determined lists or information in a memory of the control system, if this memory is available.

After you select the time delay between the application of the individual layers, the operator sets the drive speed or the distance between sections, or both, in order to obtain the exposure time required for increasing the viscosity of the applied paint layer (as a result of evaporation directionspanel diluent), enough to print "raw". In the case of CPU and memory that contains information about the composition and characteristics of the viscosity of the used paints, the control system can set the proper speed and/or distance between partitions automatically after you enter the operator of the types of paint used and the external environment.

Both devices depicted in Figures 1 and 2, may include a section for fixing the ink 70, located after the last section to paint in which the paint layers, curing under the influence of energy affects energy to secure the layers to the substrate as its integral part. Depending on the characteristics of the energy curable inks in an adapter section is used, the source of actinic radiation type ultraviolet (UV) radiation, electron beams (E), or other suitable source of actinic radiation.

The following examples illustrate the invention. In the examples used, as th is Lennie energy curable flexo water-based paints of different colors (yellow, red, blue, black and white)printed on non-porous substrates of the type of film made of polyethylene (for example, conventional polyethylene, high density polyethylene, low density polyethylene), polypropylene (e.g., conventional polypropylene, oriented polypropylene, biaxially oriented polypropylene), polystyrene (for example, a standard polystyrene, oriented polystyrene, biaxially oriented polystyrene (PS), polyamide (e.g. nylon - Nylon®), polyvinyl chloride (e.g., PVC) or polyethylene terephthalate (PET) using a conventional planetary flexo printing machine without coupling drying or curing. Unless otherwise indicated, all percentages are weight percentages of the total weight of the ink composition.

Example 1

Printing machine used in this example was six-color flexographic printing machine planetary type for a wide canvas for paints solvent-based production firm Kidder Inc., equipped with a pumping system with a squeegee in a closed chamber and curing section with halogen UV lamp power : 200˜600 watts/inch firm Fusion. Printing unit in the printing machine were arranged around a Central cylinder. The distance between the printing units around a Central cylinder the following:

The distance between Sections 1 and 2: 24.9 inches;

between Sections 2 and 3: 28.9 inches;

between Sections 3 and 4: 36.3 inches;

between Sections 4 and 5: 28.9 inches and

between Sections 5 and 6: 24.9 inches.

The distance between the last colorful section and the curing unit was approximately 12 feet.

Printed sections were charged energy curable inks for printing "raw". As the printed forms used forms of Cyrel photopolymer® the DuPont company. Also used the squeegee chamber type and aneroxia rollers with different line. In this example, the inking unit 1 was not used. Colorful section 2 contained the yellow paint of the following composition:

12.5% of yellow pigment (Permanent Yellow GDR, produced by Clariant GmbH, Frankfurt, Germany);

30.6% of water soluble ethylene-unsaturated resin (resin manufactured by Sun Chemical Co., Fort Lee, state Nyo Jersey, resin 924-1069 described in WO 99/19369);

6.3% of dispersing agent (Solspers 41090, produced by Avecia);

0,3% silicone protivovospalitel (Byk 019, produced by Byk-Chemie);

26,2% water-soluble ethylene-unsaturated oligomer (commercially available under the trade name Laromer 8765, produced by BASF Corporation);

2.2% of water-insoluble ethylene-unsaturated oligomer (Sartomer SR 610, produced by Sartomer Corporation);

5.0% of photoinitiator (commercially available under the trade name Irgacure 500,produced by Ciba Specialty Additives);

1,1% silicone additives to improve filling (commercially available under the trade name DC 57, produced by Dow Corning) and 16.0% of water.

Colorful section 3 was not used. Colorful section 4 contains the blue paint of the following composition:

15,0% blue pigment (commercially available under the trade name Sunfast 249-1290, produced by Sun Chemical Co., Fort Lee, new Jersey);

30.4% of water soluble ethylene-unsaturated resin (resin 924-1069, produced by Sun Chemical Co.);

0.5% ammonia (27˜30% concentration in aqueous solution);

6.3% of dispersing agent (Solspers 41090, produced by Avecia);

0,3% silicone protivovospalitel (Byk 019, produced by Byk-Chemie);

26.1% of water soluble ethylene-unsaturated oligomer (commercially available under the trade name Laromer 8765, produced by BASF Corporation);

2.1% of water-insoluble ethylene-unsaturated oligomer (Sartomer SR 610, produced by Sartomer Corporation);

5.0% of photoinitiator (commercially available under the trade name Irgacure 500, produced by Ciba Specialty Additives);

1,1% silicone additives to improve filling (commercially available under the trade name DC 57, produced by Dow Corning) and 13.5% of water.

Colorful section 5 contains black ink of the following composition:

15.0% pigment of carbon black (Printex 35, produced by Degussa);

30,4% soluble in the de ethylene-unsaturated resin (resin 924-1069, produced by Sun Chemical Co.);

0.5% ammonia (27-30% concentration in aqueous solution);

6.3% of dispersing agent (Solspers 41090, produced by Avecia);

0,3% silicone protivovospalitel (Byk 019, produced by Byk-Chemie);

26.1% of water soluble ethylene-unsaturated oligomer (commercially available under the trade name Laromer 8765, produced by BASF Corporation);

2.1% of water-insoluble ethylene-unsaturated oligomer (Sartomer SR 610, produced by Sartomer Corporation);

5.0% of photoinitiator (commercially available under the trade name Irgacure 500, produced by Ciba Specialty Additives);

1,1% silicone additives to improve filling (commercially available under the trade name DC 57, produced by Dow Corning) and 13.5% of water.

Finally, the inking unit 6 contained the white paint of the following composition:

33,8% white pigment (Tioxide R-HD6X, production company Tioxide Corporation);

9.0% of water soluble ethylene-unsaturated resin (resin 924-1069, produced by Sun Chemical Co.);

0.3% of dispersing agent (Solspers 41090, produced by Avecia);

0,3% silicone protivovospalitel (Byk 019, produced by Byk-Chemie);

26.1% of water soluble ethylene-unsaturated oligomer (commercially available under the trade name Laromer 8765, produced by BASF Corporation) and 30.5% of water.

Colorful sections 2, 4 and 5 were equipped anilox roller with whether what iatural 800 l/inch, and as printed forms were used Flexform of Cyrel photopolymer® DuPont®. On the forms was applied to a test image containing colored areas with variable density, area print "raw" and the image. Colorful section 6 was equipped anilox roller ruling 360 l/inch and form-plate for flexographic printing of Cyrel photopolymer®. Dice throws and was used to "capture" all of the test plates, as described for the other sections.

Print "raw" was performed on the transparent film of low density polyethylene. Print "raw" and the curing was tested at different printing speeds to vary the change in viscosity due to evaporation of the solvent, in this case water. The following describes additional tests related to the moisture content of the paint and viscosity changes. On a printing machine color vision was tested visually, curing test for dryness of the finger, and the reverse ink deposits stay - visually, by checking pumped paint on appearance alien hue. After the test paints were subjected to study. The emergence of foreign tinge in them were found. Colors in the image and the printing zones "raw" was printed on top of each other perfectly, without reverse Krasnoperova. Image is agenie had the desired shape, and the colors printed on raw, have the desired hue and brightness. Paint otverdel fully under all tested conditions of curing for each non-white color, white color, and the printing zones "raw". Maximum tested speed was 1000 ft/min, so that the respective printing speed "raw" was equal 0,1245 from between the two sections (Colorful sections 5 and 6).

Printed and cured inks were then subjected to testing on the optical density of the color on the SWOP standard and the chroma (D652/L*, a*, b*) using the system Press Check company X-Rite®. All the colors were printed with high density. Color, on top of which was printed other "raw", also had the desired density of the captured colors. This indicates a sufficient transfer of all colors at each other and white as background color. Drag-and-drop or the appearance of foreign shades were not observed neither white, nor any other color.

Additional tests were conducted, such as a standard test using rubbing alcohol and water, as well as standard tests for the strength of adhesion method of masking tape. Prints successfully passed all tests on the adhesion strength in all areas of printing. Resistance properties were dependent on curing conditions, but were generally rated as good.

Example 2

Used the same equipment as in Example 1. The second inking unit was charged with yellow paint of the following composition:

13,30% yellow pigment (Permanent Yellow GDR);

12,07% water-soluble ethylene-unsaturated resin (resin 924-1069);

6,65% dispersing agent (Solspers 41090);

0,27% silicone protivovospalitel (Byk 019);

0.53% ammonia (30% concentration in aqueous solution);

7.65% of water-insoluble ethylene-unsaturated oligomer (Sartomer SR 610);

38,55% water-soluble ethylene-unsaturated oligomer (Laromer 8765);

4.0% photoinitiator (Irgacure 500);

1,10% silicone additives to improve filling (DC 57) and 15,68% water.

Colorful section 5 was charged blue paint of the following composition:

15,96% blue pigment (Sunfast 249-1290);

10,92% water-soluble ethylene-unsaturated resin (resin 924-1069);

6,65% dispersing agent (Solspers 41090);

0,27% silicone protivovospalitel (Byk 019);

0.53% ammonia (30% concentration in aqueous solution);

7,42% water-insoluble ethylene-unsaturated oligomer (Sartomer SR 610);

38.32% of water soluble ethylene-unsaturated oligomer (Laromer 8765);

5.0% of photoinitiator (Irgacure 500);

1,1% silicone additives to improve filling (DC 57) and 14,63% water.

Colorful sections were equipped anilox roller with a frequency of 550 l/inch and Flexiframe of fotopolimerizado m the material Cyrel® DuPont®. On the prints die occupied an area the size of 4.5 inches by 7 inches, with area print "raw size of 2 inches by 6 inches. As the substrate was used a transparent film of low density polyethylene. Print "raw" and the curing was tested at different print speeds. On a printing machine color vision was tested visually, curing test for dryness of the finger, and the reverse ink deposits stay - visually checking pumped dye on the appearance of the alien hue. After the test paints were subjected to study. It was found that the inks were printed on top of one another "raw" perfectly, without reverse Krasnoperova and color brightness corresponding to when the data transfer speeds. Paint otverdel fully under all tested conditions curing in blue, yellow, and "captured" green zone printing. Maximum tested speed was 1000 ft/min, and the lowest dose of UV-irradiation was equal to 200 watts/inch at printing speed of 300 ft/min

Example 3

There were used the same ink, substrate and equipment as in Example 2. The colors were changed to blue paint was colourful, section 2, and yellow - the colorful section 5. Each inking unit was equipped anilox roller with a frequency of 550 l/d is in and Flexiframe of fotopolimerizado material Cyrel® DuPont®. On the prints die occupied an area the size of 4.5 inches by 7 inches, with area print "raw size of 2 inches by 6 inches. Test print "raw" was carried out as described in Example 2. Visible color differences in the print area "on a crude (green) was not. The above values of chromaticity obtained by using the system Press Check company X-Rite®this result was confirmed. The values were within the measurement error. This indicates that the transfer of the yellow paint on the blue paint was sufficient in the same way, and Vice versa, and a drop of paint or the appearance of alien tone was not observed.

Example 4

Printing machine used in this example was six-color flexographic printing machine planetary type for narrow web for conventional UV inks manufactured by Co-Pack Inc., equipped with a doctor blade chamber system type from the reverse angle, laminating clamping rollers using section 6 for UV adhesive and curing section with halogen UV lamp power : 200˜700 watts/inch firm Fusion. Printing unit in the printing machine were arranged around a Central cylinder.

Printing unit was charged energy curable inks for printing "raw". As the printed forms used forms of Cyrel photopolymer the DuPont company. Also used the squeegee chamber type and aneroxia rollers with different line. In this example, the inking unit 1 was not used. Colorful sections 1, 4 and 5 contained paint of the same composition as in example 1. Section 3 contained the red paint of the following composition:

13,95% red pigment (Sun 235-3438);

12,07% water-soluble ethylene-unsaturated resin (resin 924-1069);

6,65% dispersing agent (Solspers 41090);

0,27% silicone protivovospalitel (Byk 019);

0.53% ammonia (30% concentration in aqueous solution);

7.65% of water-insoluble ethylene-unsaturated oligomer (Sartomer SR 610);

of 7.95% water-soluble ethylene-unsaturated oligomer (Laromer 8765);

4.0% photoinitiator (Irgacure 500);

1,10% silicone additives to improve filling (DC 57) and 15,68% water.

Colorful sections 2, 4 and 5 were equipped anilox roller with a frequency of 800 lines per inch, and colorful section 3 was equipped anilox roller with frequency 700 l/inch. All sections were fitted with Flexiframe of fotopolimerizado material Cyrel® DuPont®. On the forms was applied to a test image containing colored areas with variable density, area print "raw" and the image. All available curing lights were off, except for the last curing lamp after the section 6 in order to create us the conditions for curing paints, used in the printing process "raw"at the end of the process. All finished prints were tested with print speeds up to 500 ft/min

In this test print "raw" has been used in various substrates, such as:

opaque oriented polypropylene brand Adicional LWH 33 firms Trespaphan;

transparent heat shrinkable polystyrene brands NOW Pack;

the mixture of polypropylene and rubber stamps Valeron 003 firm TEKRA;

opaque biaxially oriented polypropylene with a surface coating brand Label-Lyte 66LL344 company Mobil;

transparent mixture of polystyrene and rubber stamps Polyflex 0530 CLR firm Plastic Suppliers;

PVC I-CRETE brand Pentaclear company Kloeckner Pentaplast;

clear oriented polypropylene grades A-Z1 company Trespaphan.

Example 5

Used the same hardware and paint as in Example 4 and the substrate 7. Printing unit 1 was charged the same paint that was used in the ink section 6 in Example 1. The section was equipped anilox roller 600 frequency and shape of the Cyrel photopolymer® the DuPont company. As a result, the high-quality image, without failures, distortions or areas with low brightness colors was printed "raw" solid layer of white. Printing was carried out with the maximum speed of the printing machine 500 ft/min

Example 6

And who used the same hardware and paint, as in example 4 and the substrate 1. Printing unit 6 was charged energy curable coating material (brand SunCure LE GAKFV0440563, produced by SunChemical Corp.) and provided with anilox roller with a frequency of 500 lines per inch and shape of the Cyrel photopolymer® the DuPont company. The coating material was applied to the printed image without additional drying or curing of the paint. As a result, non-porous substrate "raw" was printed image of high quality without having disruptions, distortions, areas with low brightness colors and diffusion, and in the printing process "raw" was superimposed layer of covering material.

Example 7

Used the same hardware and paint as in example 4 and the substrate 1. Printing unit 6 was charged energy curable adhesive (UV adhesive for laminating brand SunCure RCKFV0487525, produced by SunChemical Corp.) and provided with anilox roller with a frequency of 500 lines per inch and shape of the Cyrel photopolymer® the DuPont company. Section lamination was equipped with a substrate. After the image has been printed, laminating coating was applied over the printed image without drying or curing of the paint. A transparent substrate for lamination was placed on wet laminating coating and paint, and laminated sandy the structure was overiden using a UV lamp at the end of the process. In the "raw" on non-porous substrate was printed image of high quality without having disruptions, distortions, areas with low brightness colors and diffusion, and use in the printing process was made laminate.

Example 8

The following examples of tests illustrate the change in the moisture content of the paint and the corresponding change in viscosity due to evaporation of the solvent, i.e. water. In the examples used energy curable flexographic inks water-based yellow and blue colors for printing on non-porous substrate of a polyethylene film using a conventional flexographic printing machines Chestnut without coupling drying or curing. All inks were printed at a constant speed of 150 ft/min and overidealize with lamp Ultra Pack firm Fusion Aetek with a maximum capacity of 400 watts/inch at 100%. A calibrated portable hygrometer > KJT-100 firms Kett, using the long-wavelength portion of the infrared spectrum, was focused at different positions on the substrate, at a distance of 1 inch, 4.5 inch and 10-inch from the strip of printed contact. Calculation of moisture and speed evaporation was based on the assumption that utverzhdenii paint is moisture content is 0%. Full moisture content of paint to register was impossible, because the paint had PR is to walk a certain distance from the squeegee aniloxes roller to form stripes printed contact, and to the place where was held the first measurement at a distance of 1 inch from the strip of printed contact. In memory machines have been registered data on humidity as the average of all readings for two seconds, and in each position was ten readings recorded for 100 seconds and then averaged. Next was given information about the standard deviation.

Test 1

The Colorful section 1 was used yellow paint of the following composition:

12.5% of yellow pigment (Permanent Yellow GDR, produced by Clariant Corporation);

30.6% of water soluble ethylene-unsaturated resin (resin manufactured by Sun Chemical Co., Inc., Fort Lee, new Jersey, resin 924-1069 described in WO 99/19369);

6.3% of dispersing agent (Solspers 41090, produced by Avecia);

0,3% silicone protivovospalitel (Byk 019, produced by Byk-Chemie);

26,2% water-soluble ethylene-unsaturated oligomer (commercially available under the trade name Laromer 8765, produced by BASF Corporation);

2.2% of water-insoluble ethylene-unsaturated oligomer (Sartomer SR 610, produced by Sartomer Corporation);

5.0% of photoinitiator (commercially available under the trade name Irgacure 500, produced by Ciba Specialty Additives);

1,1% silicone additives to improve filling (commercially available under the brand title is receiving DC 57, production company Dow Corning) and 16.0% of water.

Inking unit was equipped anilox roller using a 300 line/inch and forms of Cyrel photopolymer of DuPont®. The substrate consisted of a transparent plastic film. Relative humidity was 46,3% at a temperature of paintings 22,7±0,2°C, the temperature used for printing inks 22,6±0,1°C, and room temperature 22,7°C.

The relative humidity value at a distance of 1 inch from the strip of printed contact was 189,9±10,7. The relative humidity value at a distance of 4.5 inches from the strip of printed contact was to 108.2±or 10.3. The relative humidity value at a distance of 10 inches from the strip of printed contact was 101,1±8,3. It was determined that the average evaporation rate amounted to 0.38% per millisecond, i.e. 44,7±0.3% of the remaining water between readings at a distance of 1 inch and 4.5 inch from the strip of printed contact. It was also determined that the average evaporation rate was being 0.036% per millisecond, i.e. 7,0±0.7% of the remaining water between readings at a distance of 4.5 inches and 10 inches from the strip of printed contact.

Test 2

The Colorful section 1 was used yellow paint of the following composition:

12.5% of yellow pigment (Permanent Yellow GDR, produced by Clariant Corporation);

30.6% of water soluble ethylene-unsaturated resin (resin production is odstv company Sun Chemical Co., Inc., Fort Lee, new Jersey, resin 924-1069 described in WO 99/19369);

6.3% of dispersing agent (Solspers 41090, produced by Avecia);

0,3% silicone protivovospalitel (Byk 019, produced by Byk-Chemie);

26,2% water-soluble ethylene-unsaturated oligomer (commercially available under the trade name Laromer 8765, produced by BASF Corporation);

2.2% of water-insoluble ethylene-unsaturated oligomer (Sartomer SR 610, produced by Sartomer Corporation);

5.0% of photoinitiator (commercially available under the trade name Irgacure 500, produced by Ciba Specialty Additives);

1,1% silicone additives to improve filling (commercially available under the trade name DC 57, produced by Dow Corning) and 16.0% of water.

Inking unit was equipped anilox roller with a frequency of 400 lines per inch, and dies from a Cyrel photopolymer of DuPont®. The substrate consisted of an opaque plastic film. Relative humidity was 46.9 per cent at a temperature of paintings 23,2±0,4°C, the temperature used for printing inks 23,1±0,1°and a room temperature of 23°C.

The relative humidity value at a distance of one inch from the strip of printed contact was 217,4±5,7. The relative humidity value at a distance of 4.5 inches from the strip of printed contact was 201,7±7,1. The relative humidity value at rasstojanii inches from the strip of printed contact was 188,9± 5,1. It was determined that the average evaporation rate was 0.05% per millisecond, i.e. 5,9±0.7% of the remaining water between readings at a distance of 1 inch and 4.5 inch from the strip of printed contact. It was also determined that the average evaporation rate was 0,028% per millisecond, i.e. 5,1±0.7% of the remaining water between readings at a distance of 4.5 inches and 10 inches from the strip of printed contact.

Test 3

The Colorful section 1 used blue paint of the following composition:

15,0% blue pigment (commercially available under the trade name Sunfast 249-1290, produced by Sun Chemical Co., Fort Lee, new Jersey);

30.4% of water soluble ethylene-unsaturated resin (resin 924-1069, produced by Sun Chemical Co.);

0.5% ammonia (27˜30% concentration in aqueous solution);

6.3% of dispersing agent (Solspers 41090, produced by Avecia);

0,3% silicone protivovospalitel (Byk 019, produced by Byk-Chemie);

26.1% of water soluble ethylene-unsaturated oligomer (commercially available under the trade name Laromer 8765, produced by BASF Corporation);

2.1% of water-insoluble ethylene-unsaturated oligomer (Sartomer SR 610, produced by Sartomer Corporation);

5.0% of photoinitiator (commercially available under the trade name Irgacure 500, produced by Ciba Specialty Additives);

1,1% silicone additives to improve the filling of the (commercially available under the trade name DC 57, production company Dow Corning) and 13.5% of water.

Inking unit was equipped anilox roller using a 300 line/inch and forms of Cyrel photopolymer of DuPont®. The substrate consisted of a transparent plastic film. Relative humidity was 44.2 per cent at a temperature of paintings 23,0±0,1°C, the temperature used for printing inks 22,6±0,1°C and room temperature of 22.8°C. Readings in Test 3 was filmed in only two points at a distance of 1 inch from the strip of printed contact and at a distance of 4.5 inches from the strip of printed contact.

The relative humidity value at a distance of 1 inch from the strip of printed contact was 110,0±11,5. The relative humidity value at a distance of 4.5 inches from the strip of printed contact was 70,0±8,2. It was determined that the average evaporation rate was 0.20 per cent per millisecond, i.e. 23,3±2.8% of the remaining water between readings at a distance of 1 inch and 4.5 inch from the strip of printed contact.

Those who have the opportunity to read this description, can make various changes and combinations, such as using different colors and additional sections for drying and curing between colourful sections. Such alternatives or modifications should be considered within the scope of the invention.

1. The way NAS is the basis of numerous paint layers on a substrate, which includes the following steps:

A. applying to the substrate at least one paint layer of the energy curable liquid ink having a viscosity less than approximately 4000 SP, and includes directionspanel thinner, with a layer energy curable ink has a first viscosity;

B. evaporation of at least part directionspanel diluent of the applied paint layer for increasing the viscosity of the applied layer energy curable ink;

C. application to the substrate and the applied layer energy curable ink with increased viscosity of at least one layer neocoregames energy liquid ink whose viscosity is lower than the increased viscosity caused before this layer energy curable ink; and

, Pinning both paint layers on a substrate.

2. The method according to claim 1, wherein the diluent comprises water.

3. The method according to claim 1 in which from about 5 to 50% by weight of the diluent is water.

4. The method according to claim 1, in which the stage And performed in the first paint section, and the stage is performed in the subsequent colorful sections, and in which the substrate is transported between the first paint section and the subsequent colorful section at a rate sufficient to at least part of the diluent krasochnom layer could evaporate, thereby increasing the viscosity of the paint layer to a degree sufficient to ensure that he could perceive another paint layer applied to the layer with increased viscosity.

5. The method according to claim 1, in which the colored layer coated is exposed to a high temperature in order to facilitate the removal of at least part of the diluent with a higher speed than the speed of evaporation of the diluent at a temperature, pressure and humidity of the environment.

6. The method according to claim 1, wherein the printed layer of paint is exposed to air flow in order to facilitate the removal of the diluent with a higher speed than the speed of evaporation of the diluent at a temperature, pressure and humidity of the environment.

7. The method according to claim 1, in which the stage can be repeated at least once after step G by applying additional paint layer on the pinned layers of colour, with additional paint layer is also attached to the substrate.

8. The method according to claim 7, in which the diluent comprises water.

9. The method according to claim 7, in which from about 5 to 50% by weight of the diluent is water.

10. The method according to claim 7, in which the stage And performed in the first paint section, and the stage is performed in the subsequent colorful section, and the substrate transporting the I between the first paint section and the subsequent colorful section with speed, sufficient to at least part of the diluent in the paint layer could evaporate, thereby increasing the viscosity of the paint layer to a degree sufficient to ensure that he could perceive another paint layer applied to the layer with increased viscosity.

11. The method according to claim 7, in which the colored layer coated is exposed to a high temperature in order to facilitate the removal of at least part of the diluent with a higher speed than the speed of evaporation of the diluent at a temperature, pressure and humidity of the environment.

12. The method according to claim 7, in which the printed layer of paint is exposed to air flow in order to facilitate the removal of the diluent with a higher speed than the speed of evaporation of the diluent at a temperature, pressure and humidity of the environment.

13. The method according to claim 7, in which the hygroscopic substrate.

14. The method according to claim 7, in which the substrate is non-hygroscopic.

15. The method according to claim 1, wherein after step G is applied to at least one paint layer using energy curable liquid ink having a viscosity less than approximately 4000 SP, and includes directionspanel diluent comprising water.

16. The method according to item 15, in which the diluent comprises water.

17. The method according to the .15, in which from about 5 to 50% by weight of the diluent is water.

18. The method according to item 15, in which the stage And performed in the first paint section, and the stage is performed in the subsequent colorful sections, while the substrate is transported between the first paint section and the subsequent colorful section at a rate sufficient to at least part of the diluent in the paint layer could evaporate, thereby increasing the viscosity of the paint layer to a degree sufficient to ensure that he could perceive another paint layer applied to the layer with increased viscosity.

19. The method according to item 15, in which the colored layer coated is exposed to a high temperature in order to facilitate the removal of at least part of the diluent with a higher speed than the speed of evaporation of the diluent at a temperature, pressure and humidity of the environment.

20. The method according to item 15, in which the printed layer of paint is exposed to air flow in order to facilitate the removal of the diluent with a higher speed than the speed of evaporation of the diluent at a temperature, pressure and humidity of the environment.

21. The method according to item 15, in which the hygroscopic substrate.

22. The method according to item 15, in which the substrate is non-hygroscopic.

23. The method according to claim 1, in which th is stage G stages And, B, C and D are repeated at least once.

24. The method according to claim 1, in which the hygroscopic substrate.

25. The method according to claim 1, wherein the substrate is non-hygroscopic.

26. The method of applying multiple layers of paint on a substrate, comprising the following steps:

A. applying to the substrate at least one paint layer of the energy curable liquid ink having a viscosity less than approximately 4000 SP, and includes directionspanel thinner, and the applied layer energy curable ink has a first viscosity;

B. evaporation of at least part directionspanel diluent of the applied paint layer for increasing the viscosity of the applied layer energy curable ink;

C. application to the substrate and the applied layer energy curable ink with increased viscosity of the subsequent layer energy curable liquid ink having a viscosity less than approximately 4000 SP, and containing directionspanel diluent, the viscosity of the subsequent layer is lower than the increased viscosity caused before this layer energy curable ink; and

, Fixing each of the paint layers on the substrate.

27. The method according to p, in which the diluent is water.

28. The method according to p, in which each of the colors around the about from 5 to 50% by weight of the diluent is water.

29. The method according to p, in which the stage And performed in the first paint section, and the stage is performed in the subsequent colorful sections, while the substrate is transported between the first paint section and the subsequent colorful section at a rate sufficient to at least part of the diluent in the paint layer could evaporate, thereby increasing the viscosity of the paint layer to a degree sufficient to ensure that he could perceive another paint layer applied to the layer with increased viscosity.

30. The method according to p, which caused the paint layer is exposed to a high temperature in order to facilitate the removal of at least part of the diluent with a higher speed than the speed of evaporation of the diluent at a temperature, pressure and humidity of the environment.

31. The method according to p, in which the printed layer of paint is exposed to air flow in order to facilitate the removal of the diluent with a higher speed than the speed of evaporation of the diluent at a temperature, pressure and humidity of the environment.

32. The method according to p, further comprising repeating steps B and C one or more times, each time with the application on top of the previous layer of paint other energy curable liquid ink having a viscosity less than approximately what about the 4000 SP, and incorporating directionspanel diluent, and the other ink has the viscosity of the paint layer is lower than the increased viscosity caused before this layer of paint.

33. The method according to p, in which step G includes securing all layers using a source of actinic radiation.

34. The method according to p, in which the energy curable liquid ink includes curing energy single-phase three-component composition is water-based, which includes water, a water-soluble ethylene-unsaturated oligomer and a water-soluble ethylene-unsaturated resin, which may be neutralized with an acid or a base.

35. The method according to clause 34, in which the functional group of the resin containing the carboxylic acid that can be neutralized by a base, such as tertiary amine.

36. The method according to p, in which the stage And performed in the first paint section, and the stage is performed in the subsequent colorful sections, while the substrate is transported between the first paint section and the subsequent colorful section at a rate sufficient to at least part of the diluent in the paint layer could evaporate, thereby increasing the viscosity of the applied paint layer to a degree sufficient to ensure that he could perceive another layer of paint applied to Nanase is hydrated before the paint layer with the increased viscosity of the layer.

37. The method according to p, in which paint is energy curable liquid flexographic inks and colorful section is flexo printed or colorful section.

38. The method of printing multiple paint layers on a substrate, comprising the step of selecting the first and second energy curable liquid flexographic inks, where each of the inks contains regulatory viscosity directionspanel diluent comprising water in the amount of approximately between 5 and 50% by weight of diluent, and where each ink has a viscosity from about 30 to 70 SP, and the stage of the sequential application of the first and second energy curable liquid flexographic inks on a substrate in order to form the first and second paint layers having overlapping parts, and the second paint is applied after evaporate at least part of diluent in the first layer of paint.

39. Device for the sequential deposition of multiple overlapping layers of paint on a substrate, which includes the route of the substrate and the actuator substrate to move the substrate along the route; many sections to paint along the route, and sections for paint adapted to be applied to the substrate paint, incorporating directionspanel thinner and have th viscosity of less than 4000 SP; and a control system that controls the transportation of the substrate along the route so that the viscosity of the first layer liquid coating that is applied to the substrate in one of the most colorful sections, is increased due to evaporation of at least part of the diluent from the first paint layer to a higher viscosity than the viscosity of the second ink applied over the first ink layer in the subsequent colorful sections, some distance from the first paint section, up to a viscosity sufficient for the application of "raw" second liquid paint during transport of the substrate between the colorful sections.

40. The device according to § 39, which includes a drive for transporting the substrate with a predetermined speed dependent on the desired viscosity increase caused the paint layer to be transported between the colorful sections.

41. The device according to p, in which the actuator is an actuator with adjustable speed, and the control system controls the variable speed drive.

42. The device according to § 39, which can adjust the distance between the individual colorful sections along the transport route.

43. The device according to § 42, in which the control system controls the distance between the colorful sections depending on the desired viscosity increase caused to asonog layer, transported between the colorful sections.

44. The device according to § 39, in which the control system controls the transportation of the substrate between the colorful sections depending on the desired viscosity increase caused the paint layer to be transported between the colorful sections, and also controls the thickness of the paint layer applied to the substrate in a colorful sections located at a certain distance from each other.

45. The device according to item 44, which includes a drive for transporting the substrate with a predetermined speed dependent on the desired viscosity increase caused the paint layer to be transported between the colorful sections.

46. The device according to item 45, which can adjust the distance between the colorful sections along the transport route, and the control system controls the distance between the colorful sections and a predetermined speed depending on the desired viscosity increase caused the paint layer to be transported between the colorful sections.

47. The device according to § 39, which can adjust the distance along a predefined route, which divides the colorful section.

48. The device according to paragraph 41, in which the control system includes a memory containing data, including data about the change in viscosity caused krasznahorkai time, when this control system retrieves from the memory the data and controls the transportation of the substrate between the colorful sections so that it passed with the speed obtained on the basis of the extracted data from memory.

49. The device according to p in which the data in memory indexed by certain formulations of paint.

50. The device according to § 49, in which the data is also indexed by the specific thickness of the applied layer of paint.

51. The device according to § 39, in which the predefined route is the outer surface of the cylinder, and sections for paint application are located radially along the surface, and the cylinder

1) has no elements for drying or curing between sections;

2) has a diameter smaller;

3) has a greater number of printing units around a cylinder;

4) has the cooling system of smaller or does not have it; and

5) made of non-metallic material, such as polymer composite material or the formed product.

52. The device according to § 39, which also includes a section for curing energy, located on a predetermined path after the last of the colorful sections.



 

Same patents:

FIELD: chemical industry; computer industry; methods of production of the pigments used in the coatings of the registering medium of ink-jet systems.

SUBSTANCE: the invention is pertaining to production of the pigments suitable for usage in the compositions of the registering mediums used for the ink jet printing. The invention provides, that the surface of the pigmental loose material is subjected to action of the water-soluble salt of the polyvalent metal in the aqueous medium. The treated surface of the particles gains the sizeable cationic surface charge. The salt represents the metal salt of the Group II or the Group III of Periodic table. The registering mediums for the ink-jet printing treated with the coating composition containing the indicated pigment ensure the high density fast-drying and anti-bleeding colorful images with the sufficient water-resistance. The compositions used for creation of the coating also have the advantage pertaining to the net cost and to the improved rheology at the more higher content of the pigment in the coating as compared with the coatings based on the siliceous pigments.

EFFECT: the invention ensures production of the coatings with the indicated pigment having the high density, fast-drying and anti-bleeding colorful images with the sufficient water-resistance at the low net cost, the improved rheology at the more higher content of the pigment in the coatings, as compared with the coatings based on the siliceous pigments.

30 cl, 5 dwg, 7 tbl, 7 ex

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which coating is ennobled by means of supercalendering. As pigment, mixture of amorphous silicon dioxide with calcium carbonate or kaolin with outer specific surface 60-85 m2/g at ratio (25-50):(75-50). Binder is a mixture of polyvinyl alcohol with latex selected from class of styreneacrylic copolymers at ratio (20-25%):(7-18%) based on the weight of pigment. Cationic fixative is poly(diallyldimethylammonium chloride), which is directly incorporated into coating composition in amount 5-10%.

EFFECT: enabled image quality and paper surface strength control.

3 cl, 1 tbl, 13 ex

FIELD: pulp-and-paper industry.

SUBSTANCE: coating composition consisting of ink-compatible pigment, water-soluble binder, and cationic fixative is deposited onto one of the sides of based paper and the other side is covered with detwisting coating, after which glossy surface is formed. Coating composition is supplemented by wettability controlling agent based on polydimethylsiloxane resins in amounts 0.4 to 1.6% of the weight of pigment. Water-soluble binder is a mixture of polyvinyl alcohol with polyvinylpyrrolidone at ratio (90-50):(10-50) in amount 40-60% and styreneacrylic latex in amount 15-20% of the weight of pigment. When forming glossy surface, polyethylene oxide-based plasticizer is used in amount 7-15% of the weight of pigment followed by supercalendering at pressure in roll contact zone 20-25°C and temperature 50-90°C.

EFFECT: improved manufacturability of process.

5 cl, 1 tbl, 54 ex

FIELD: negative printing forms developed in printing machine, which may be exposed by ultraviolet, visible or infrared radiation.

SUBSTANCE: cover-forming composition is described, which includes (i) polymerization-capable compound and (ii) polymer binding agent, containing polyethylene-epoxide segments, where polymer binding agent is selected from group which consists of at least one added copolymer, containing polymer of the main chain and polyethylene-epoxide side chains, block copolymer, containing at least one polyethylene-epoxide block and least one non polyethylene-epoxide block, and combinations of these. Also described is an element, in which image may be formed, including base and polymerization-capable covering composition.

EFFECT: differentiation between image sections exposed and non-exposed by electromagnetic radiation, facilitating development of non-exposed sections in water developing agents, increased resistance to development of exposed sections, ensured coloration capacity of the latter when not heated before development.

5 cl, 3 dwg, 11 ex

FIELD: protective members for visual controlling of authenticity of printing product such as security papers, banknotes, identification cards.

SUBSTANCE: protective member is formed as color layer applied to substrate and having color-free portions produced by exposing color layer to laser radiation for forming of image detected by visual control. Substrate surface is provided with relief, said image being formed on at least one side of relief after exposing to laser radiation falling at predetermined angle to relief surface. Protected printing product is equipped with protective member for visual controlling of paper authenticity.

EFFECT: increased extent of protecting printing products due to creation of protective member more complicated for counterfeit and using optical variable image.

7 cl, 5 dwg

FIELD: self-copy papers.

SUBSTANCE: group of inventions relate to use of microcapsules containing color reaction component. Color reaction component is first dissolved in solvent, namely vegetal oil C1-C8-alkyl ester, and to thus obtained solution a non-solvent is admixed at rapid stirring, said non-solvent not dissolving or dissolving insignificantly color reaction component and being taken in amount as to form supersaturated solution. The latter is directly emulsified in water phase at rapid stirring and, immediately after that, resulting emulsion is processed so that encapsulation takes place therein. Microcapsules obtained in this way are further described as well as their employment in color reaction paper.

EFFECT: improved writing quality and economic and environmental advantages.

33 cl, 1 dwg, 4 ex

FIELD: the invention refers to a multiplayer body.

SUBSTANCE: the multi-layer body fulfilled as a carbon film preferably as hot stamping film or as laminated film consists of layer structure formed with a substrate, a layer sensitive to laser emission where layered structure has one background layer which serves for laser emission as reflective and/or opaque , and/or absorbent which is correlated with a layer sensitive to laser emission. The background layer is located in one partial field on the side inverted to the layer sensitive to laser emission and provides so that laser emission does not pass or pass in a very insignificant degree into the layers below the background layer so that sufficient destruction of the substrate is averted under influence of used laser emission.

EFFECT: creation of multi-layer element that ensures possibility of forming exceptionally accurate and many-sided marking induced with laser.

18 cl, 10 dwg

FIELD: polygraphy.

SUBSTANCE: one invention from a group is related to printing base, being a substrate with oleophilic surface, having Gurley-Hill porosity value greater than 5000s/100ml, while printing paint, imprinted on such base, has offset value of printing paint IGT with delay time 30s, equal to more than 0,60 printing density units. Another invention is related to printing method, which is performed in at least one printing section with use of substrate, having oleophilic surface and being not porous with Gurley-Hill porosity value over 5000s/100ml, and carrier of pigment of printing paint, having value of offset of printing paint IGT with delay time 30s, equal to more than 0,60 printing density units.

EFFECT: improved quality of printing, improved quality of folding, decreased static electricity.

2 cl, 6 dwg, 3 tbl

FIELD: printed matter of special format.

SUBSTANCE: multi-layered article comprises the layer sensitive to the laser radiation, marking member, e.g., diffraction and/or holographic structure, reflecting layer, and print formed in the second layer and/or in the layer sensitive to the laser radiation. The layer sensitive to the laser radiation has markers that are made by means of laser radiation and precisely positioned with respect to the marking member.

EFFECT: enhanced reliability of protection.

27 cl, 40 dwg

FIELD: marking materials.

SUBSTANCE: invention relates to pigmentation and compositions for use in laser marking, in particular UV absorbing pigment at least partly covered with synergist having general formula [Rm(SiOn)]pR'q wherein m=1-3, n=1-3, p is a number equal to at least 1, q=0-3, and at least one of R or R' represents substituent. When pyrolized, pigment forms black material appropriate to form label. Such pigments are suitable for fluoropolymers serving to insulate wire conductors and cables.

EFFECT: expanded marking possibilities.

20 cl, 6 tbl, 38 ex

FIELD: polygraphic industry, in particular, technique for processing of perfected paper sheets, in particular, bonds.

SUBSTANCE: apparatus has device for sequential feeding of sheets, transportation means, means for processing of said sheets, and means for sorting out of sheets into at least two paper sheet stacks. Indicated parts of apparatus are sequentially arranged in direction of advancement of said paper sheets. Means for processing of sheets has first print quality controlling device, device for applying series numbers and/or additional members onto sheets, second print quality controlling device adapted for controlling of applied numbers and/or images of additional members, and sheet marking device actuated in response to data generated by first and second print quality controlling devices for marking of sheets rejected by said first and second print quality controlling devices.

EFFECT: increased efficiency in carrying out of complex or part of said operations and provision for high-degree controlling of print quality.

12 cl, 5 dwg

FIELD: operative color control in printing presses for used primary and auxiliary colors by continuous conducting of spectral measurements in conjunction with linear equations for determining the required correction of printing ink feed for conservation of color precision in printing.

SUBSTANCE: when the color anomaly is exceeded, the measured values of the spectral reflectivity of the tested area are compared with the respective preset values, and the anomaly of the reflection spectrum is determined. The linear equations are used for correlation of the reflection spectrum anomalies with varieties of the solid ink density or thickness of the ink layer for ink feed control with the use of an operatively empitically produced corrective matrix, such that the reflection spectrum is minimized.

EFFECT: provided color control during printing with the use of spectral measurements.

65 cl, 4 dwg

FIELD: polygraphic engineering.

SUBSTANCE: method for printing of protected documents, in which the latters are printed on sheets, each containing a great number of protected documents. Each sheet has a unique type-readable identifier. In the process of production the lots are processed with the aid of several printing presses. On each printing press the identifiers are read off with the aid of a local computer separated for the given printing press. The results are transmitted by inquiry in the form of poles of data to the central data base. Each pile contains information on several sheets, which eliminates the necessity of transmission of the respective data in the conditions of real time through the network. To enhance the safety of reduction of dependence from operation, each local computer has a means of automatic checkup of the state of the lot processing.

EFFECT: checkout of printing production at a large enterprise at low requirements to hardware, software and computer circuit.

10 cl, 3 dwg

The invention relates to a method of reducing vibrations in a printing press

The invention relates to a device and method for regulation of multi-motor electric printing machines

The invention relates to a method for automatic control of print quality multicolor image by using at least one optoelectronic devices, providing a single signal Si per color channel

The invention relates to a method of control using optoelectronic devices print quality images on paper
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