Resins for monolithic upper covering

FIELD: chemistry.

SUBSTANCE: upper covering, suitable for printing or susceptible to printing, contains polyetherurethane, polyurethaneacrylate, cross-linking agent, where cross-linking agent is contained in amount from approximately 2 parts to approximately 15 parts per 100 parts of all solid substances and adhesion-preventive additive.

EFFECT: described is upper covering for front material, characterised by desired paint adhesion, resistance to formation of point defects, moisture/water resistance, optic characteristics and/or resistance to adhesion.

20 cl, 5 dwg, 7 tbl

 

The level of technology

The object of the present invention relates generally to the field suitable for printing or receptive to printing topcoats. Of particular significance to the invention has, in respect suitable for printing or receptive to printing the top coat that is applied on top of polyolefin materials for applications involving UV (ultraviolet) seal, therefore, in the present application is specifically mentioned. However, it is understood that aspects of the subject of the present invention is also applicable to the upper coating film or other facial materials and/or for other possible applications.

Different formulations suitable for printing or receptive to printing topcoats, for example, polyolefin and/or other film or facial materials in the art are well known. For example, suitable for printing or receptive to printing top coat based on a combination of polyacrylates and polyurethanes described in the patent application US 2004/0197572 A1, which is introduced by this reference in its entirety. One disadvantage of the compositions of this type is mediocre upper adhesion of the coating to the face material. In addition, these types of songs tend to cause problems of adhesion, i.e. undesirable adhesion of the dry top coat to the back side captivity�ment of facial material after obtaining the intermediate product with a top coating. Another disadvantage of these compositions is their tendency to contact the silicones present in anti-adhesive system, which can lead to undesirable effects on the performance of the printing machine.

Another composition for top coating is described in PCT application, international publication WO 02/38382 A1, which is introduced by this reference in its entirety. In the aforementioned document describes the combination of different acrylic resins. However, these composition for top coating is characterized by poor adhesion of the top coat to the base, and poor chemical resistance.

More suitable for printing or receptive to printing top coating is described in patent application US 2007/116905 A1, which is introduced by this reference in its entirety. Described in it receptive to printing the top coat consists of a dispersion in water of a simple polyetherurethane and dispersible in water complex polyetherurethane.

In any case, the use of different formulations suitable for printing or receptive to printing top coatings can be problematic or limited in one or more respects. Examples of some common problems or limitations include the undesirable formation of point defects in the coating, and/or adhesion, and/or poor adhesion of paint to the surface In particular, the formation of point defects can be caused by silicone contamination (for example, because of the strip placed on the opposite side of the underlying film or other facial material, which is applied as a top coat), and adhesion may be the result of adhesion of the top coat to the back side underlying film or facial material. Further, it is usually beneficial to top coating showed other desirable characteristics such as good print quality, significant resistance should gloss, suitable optical properties (such as opacity, brightness, and/or complete transmission, etc.).

Accordingly, disclosed a new and/or improved suitable for printing or receptive to printing top coating that eliminates the above or other problems.

Summary of the invention

In accordance with one implementation of the described suitable for printing or susceptible to a printing surface.

In accordance with another implementation of the described facial film material or a laminate containing the printable or susceptible to a printing surface.

In accordance with another alternative implementation of the described method of creating or facial manufacture of film material or a laminated material�, includes printable or susceptible to a printing surface.

Numerous benefits or advantages of the disclosed here, the object of the invention will become apparent to specialists when reading and understanding the present description.

Brief description of figures

The subject invention disclosed herein may take the form of various components and systems of components and various operations and aggregates operations. The drawings are only for purposes of illustration of preferred embodiments and should not be construed as restrictive. In addition, it should be understood that the drawings can be made not to scale.

Fig.1 is a schematic illustration showing a typical completed structure including the upper sample coatings prepared and tested in accordance with the described experiments.

Fig.2 is a schematic illustration showing the structure of a device for measuring adhesion.

Fig.3 is a graph showing the characteristics of the formation of point defects in the samples tested in experiment 1.

Fig.4 is a graph showing the characteristics of adhesion to the specimens tested in experiment 1.

Fig.5 is a graph showing the characteristics of adhesion of UV inks for Flexo sample�in, tested in experiment 1.

Detailed description of embodiments of

For clarity and simplicity, the present description will refer to structural and/or functional elements, relevant standards and/or procedures and other components that are well known in the art, without further detailed explanation as to their configuration or operation except to what extent they have been modified or changed in accordance with the preferred option presented here implement and/or to agree with them.

In General, the present description discloses one or more topcoats according to the invention, which are suitable for printing or other appointments on them ink. Also describes one or more films or other facial materials or laminates containing the disclosed here are suitable for printing or susceptible to print carpeting, and reveals one or more of the methods of their creation or receipt. More specifically, the upper cover according to the disclosed here, the subject invention properly exhibit one or more of the following: (i) limited the formation of point defects and/or adhesion; (ii) good performance paint adhesion; (iii) good image quality; (iv) about desirable�optical properties, such as gloss, opacity, brightness and lack of color; and (v) significant water resistance and chemical resistance. Proposed top coating is particularly well suited for application over PP (polypropylene), PET (polyethylene terephthalate) or PE (polyethylene) film, but may, however, also be applied on top of the other face materials.

Generally speaking, as proposed here, the top coating is an aqueous dispersion comprising at least (1) a polyurethane, and (2) polyurethanebased. In particular, suitable for top coating materials consist of: (1) aliphatic polyurethane and (2) aliphatic polyurethanecoated. Indeed, experiments (described below) revealed that the most favorable of the following formulation, namely aqueous dispersion comprising at least (1) dispersible in water simple aliphatic polyester urethane and (2) dispersed in water aliphatic urethaneacrylate.

Suitable polyurethanes for use in accordance with the subject of the present invention is selected from latex simple politicalisation and dispersible in water complex politicalization. Polymer complex politicalization is the reaction product of a predominantly aliphatic polyisocyanate component and polyetherpolyols component. The term "advantage�tively aliphatic", as used here, means that at least 70 wt.%. polyisocyanate component are aliphatic polyisocyanate, in which all the isocyanate groups are directly linked to aliphatic or cycloaliphatic groups, regardless of whether there are also aromatic group. More preferably, the amount of the aliphatic polyisocyanate is at least 85 wt.% and most preferably 100 wt.% from a polyisocyanate component. Examples of suitable aliphatic polyisocyanates include atlantaatlanta, 1,6-hexamethylenediisocyanate, a diisocyanate, cyclohexane-1,4-diisocyanate, 4/4'-dicyclohexylmethane, cyclopentylpropionate, p-tetramethyldisilane (p-TMXDI) and its meta isomer (m-TMXDI), hydrogenated 2,4-colorvision and 1-isocyanato-1-methyl-3(4)-isocyanatomethyl (IMCI). Can also be used a mixture of aliphatic polyisocyanates.

Complex politically that can be used in complex polyetherpolyols component include containing terminal hydroxyl groups, the reaction products of polyhydric alcohols such as ethylene glycol, propylene glycol, diethylene glycol, neopentylglycol, 1,4-butanediol, 1,6-hexandiol, furandione, cyclohexanedimethanol, glycerin, trimethylolpropane or pentari�Rita, or mixtures thereof. Also suitable polycarboxylic acids, in particular dicarboxylic acids, and their afrobrazilian derivatives. Examples include succinic, glutaric and adipic acids or their methyl esters, phthalic anhydride and dimethylterephthalate. Can also be used in the polyesters obtained by the polymerization of lactones, for example caprolactone, in combination with the polyol. Commercially available complex politicomilitary suitable for use in accordance with the present invention include the products sold under the trade names AVALURE UR-425, AVALURE UR-430, AVALURE UR-405 and AVALURE UR-410 by the company Goodrich Corporation (Charlotte, NC), NEOREZ R600, NEOREZ R9679 and NEOREZ R-989, all from NeoResins (Waalwijk, the Netherlands).

Polymer plain polyester-polyurethane is a reaction product of a predominantly aliphatic polyisocyanate component and a simple polyetherpolyols component. Suitable aliphatic polyisocyanates described above. Suitable simple polyetherpolyols include products obtained by the polymerization of cyclic oxides or by joining one or more such oxides to polyfunctional initiators. Such polymerized cyclic oxides include, for example, ethylene oxide, propylene oxide and tetrahydrofuran. Such polyfunctional initiators attaching oxides include, for example, in�Doo, ethylene glycol, propylene glycol, diethylene glycol, cyclohexanedimethanol, glycerin, trimethylpropane, pentaerythritol and bisphenola (A and F).

Suitable polyethers include polyoxypropylene and-trioli, poly(oxyethylene-oxypropylene)diols and-trioli produced by the simultaneous or sequential connection of ethylene oxide and propylene to the corresponding initiators, and polytetramethylene glycol ethers, obtained by polymerization of tetrahydrofuran. A commercially available simple politicomilitary suitable for use in accordance with the present invention include the products sold under the trade names SANCURE 878, AVALURE UR-450 and SANCURE 861 from Goodrich Corporation (Charlotte, NC), NEOREZ R563 and NEOREZ R-551 from NeoResins (Waalwijk, the Netherlands).

In accordance with aspects of the present invention are used urethaneacrylate. The functionality (number of acrylic fragments per molecule) of urethaneacrylate varies in practice between one and six. Generally speaking, the lower the functionality, the lower reactivity, the better the flexibility and the lower the viscosity. Composition for top coating according to the present invention preferably have a functionality of two or three.

Monofunctional urethaneacrylate are a special product, which is used to improve the� " s adhesion to difficult the basics and to improve flexibility. These products have a very low viscosity. Urethaneacrylate with high functionality (the functionality of 4 or higher) are special products that are used to improve reactivity, resistance to scratching, chemical resistance, etc.

For the synthesis of urethaneacrylate can be used four types of isocyanates: monoisocyanates, aliphatic diisocyanates, aromatic diisocyanates and polymeric isocyanates. Isocyanates which are not monoisocyanates, also known as polyisocyanates. Monoisocyanates are used only for uni-functional urethaneacrylate, and this type of oligomers has been described above. The most widely used in the synthesis of urethaneacrylate, undoubtedly, the diisocyanates. They are available in the form of aliphatic and aromatic diisocyanates. Aromatic diisocyanates are used to obtain the so-called aromatic urethaneacrylate. The introduction of aromatic urethaneacrylate makes urethaneacrylate stronger and gives them the best scratch resistance. Aromatic urethaneacrylate also significantly cheaper than the aliphatic urethaneacrylate. This makes them interesting for those applications where the desired performance urethaneacrylate (for example, good flexibility or resistance to abrasion), but where the composition must be for the relative�but inexpensive. One drawback of aromatic urethaneacrylate is that they tend to turn yellow and are therefore less suited for long-life applications on white or faintly colored framework.

Aliphatic diisocyanates are used in the aliphatic urethaneacrylate. Aliphatic urethaneacrylate are a bit more flexible than the aromatic urethaneacrylate the same functionality, with a close polyol modifier and close when the molecular weight. One advantage of aliphatic urethaneacrylate is that they don't actually turn yellow and therefore can be used for long-life applications on white or faintly colored framework.

Polymeric isocyanates are used for urethaneacrylate less than the diisocyanates. They are used mainly for urethaneacrylate higher functionality (for example, 3 and above). Reagents with an isocyanate functional group obtained by reaction of polyisocyanates with compounds containing a functional group with active hydrogen, are typical hydroxyl group, although it can also be used mercaptan group, amino group and carboxyl group.

The polyisocyanates are of conventional nature and include, for example, hexamethylenediisocyanate, colorvision (TDI), diphenylmethane (MDI), m - and p-phenylendiamine, bit�silencesound, cyclohexanediethanol (CHDI), bis(isocyanatomethyl)the diisocyanate (H 6 XDI), dicyclohexylmethane (H 12 MDI), a diisocyanate dimer acid (DDI), trimethylhexamethylenediamine, lysine diisocyanate and its methyl ester, a diisocyanate, methylcyclohexylamine, 1,5-naphthalenedisulfonate, xylylene - and xradiation and their methyl derivatives, polymethylenepolyphenylisocyanate, chlorphenesin-2,4-diisocyanate, polyphenylisocyanate, commercially available under the names of, for example, Mondur MR or Mondur MRS, the diisocyanate (IPDI), hydrogenated methylenedianiline (HMDI), tetramethyldisilane (TMXDI), hexamethylenediisocyanate (HDI) or oligomeric materials of these substances, such as IPDI trimer, HDI or HDI biuret, etc., and mixtures thereof.

Top coating according to the present invention preferably includes aliphatic urethaneacrylate that are complex or simple skeleton polyester.

Simple polyetherurethanes are usually more flexible than complex polyetherurethanes, and often cheaper. In addition, simple polyetherurethanes to have a slightly lower viscosity than complex polyetherurethanes the same functionality and approximately the same molecular weight.

The polyesters can be synthesized, for example, by reaction of decislon1-C12 (or their respective anhydrides, or other digisat with diola or a mixture of diols. The mixture was heated in the presence of a catalyst to temperatures sufficient to remove the water formed during the condensation reaction.

Polyethers of molecular weight, for example, approximately 1000-6000 (Mn) can be synthesized from ethylene oxide by conventional methods, well known in this field. Can also be used simple politically (for example, Homo - and copolymers ethylenoxide and propylenoxide blocks), optionally alkylated (for example, polytetramethylene glycol ethers). In addition, the ethylene oxide and propylene oxide may be reacted with each other to obtain a simple polyetherpolyols, or a simple polyetherpolyols can be formed from bifunctional compound which contains groups capable of reacting with ethylene oxide and propylene oxide. Such suitable groups include, for example, hydroxyl groups, thiol groups, acid groups and amino groups. Accordingly, diols, triola, daily, decicate, diamines, etc., are suitable bifunctional compounds which can react with ethylene oxide and/or propylene oxide for synthesis of polyether in accordance with the present invention. Such suitable compounds include, for example, alkyl�glycol, usually containing from about 2 to 8 carbon atoms (including cycloalkenyl). Examples of such diols are ethylene glycol, 1,3-PROPANEDIOL, 1,4-butanediol, 1,5-pentanediol, 1,6-hexandiol, 1,2-PROPANEDIOL, 1,3-butanediol, 2,3-butanediol, 1,3-pentanediol, 1,2-hexanediol, 3-methylpentan-1,5-diol, 1,4-cyclohexanedimethanol, etc., and mixtures thereof. Also, if this is desirable or convenient, may be used diethylene glycol, dipropyleneglycol, etc.

Hydroxy(meth)acrylate monomer is introduced in order to functionalitywith complex/simple urethane for subsequent curing with ultraviolet light. Suitable hydroxy(meth)acrylates include, for example, hydroxyethyl(meth)acrylate, hydroxypropyl(meth)acrylate, hydroxybutyl(meth)acrylate, caprolactone, etc. Alternative may be used with hydroxy-functional monomers, for example hydroxybutylidene ether or allyl alcohol. Adhering to the terminology of this field, the group, enclosed in brackets is optional. So, "alkylacrylate" means acrylate and acrylicresin.

Typical examples of commercially available of urethaneacrylate that can be used in accordance with the present invention, are UCECOAT 7772, UCECOAT 7773, UCECOAT 7849, UCECOAT 7770 (all from CYTEC Surface Specialities), Joncryl U6336 (BASF), BAYHYDROL UV 2317, BAYHYDROL UV VP LS 2348 (Bayer).

Top coating according to the present�th invention may include water-dispersible in water crosslinking agent. Suitable water-dispersible polyfunctional water chemically activated crosslinkers are commercially available. These crosslinking agents include water-dispersible compositions of polyfunctional aziridines, isocyanates, melamine resins, epoxy resins, oxazoline, carbodiimide and other polyfunctional cross-linking agents. In one embodiment of the crosslinking agents are added in an amount of from about 0.1 parts to about 30 parts per 100 parts of all solids. In another embodiment of the crosslinking agents are added in an amount of from about 1 part to about 20 parts per 100 parts of all solids. In another embodiment of the crosslinking agents are added in an amount of from about 2 parts to about 15 parts per 100 parts of all solids. In another embodiment of the crosslinking agents are added in an amount of greater than or equal to about 4 parts per 100 parts of all solids, and in yet another embodiment of the crosslinking agents are added in an amount of from about 4 parts to about 7 parts per 100 parts of all solids. Adding cross-linking agents to the dispersion of the polyurethane composition can form an inclusive or interconnected grid having a crosslinked matrix which binds mixed polymers covalent and/or noncovalent linkages�.

In order to obtain certain desired characteristics, can also be added other additives such as waxes, defoamers, surfactants, colorants, antioxidants, UV stabilizers, fluorescent substances, crosslinkers, etc.

In one embodiment of the composition for top coating contains additives that prevent sticking. These additives reduce the tendency of the film to stick together when it is in the form of a roll. Preventing adhesion additives include natural silica, diatomaceous earth, synthetic silica, glass beads, ceramic particles, etc Can be added supplements that improve slide, consisting of primary amides, such as stearamide, beginnig, oleamide, erucamide, etc.; secondary amides, such as stearinerie, artillerymen, oleylamine, steelsteel, artillerymen, etc.; ethylene-bis-amides such as N,NN-ethylene-bis-stearamide, N,NN-ethylene-bis-oleamide, etc. and combinations of any two or more of the above amides.

Composition for top coating according to the present invention can be applied to film materials by methods well known in the art. Non-restrictive examples of these methods of application are coating with removal of excess with a strap Meyer, coating covered�I by direct gravure printing, the coating is applied through a nozzle coating method, a reverse gravure printing, coating, roller coating, spraying, knife coating device, etc.

Preferably, the front material, which is deposited composition for top coating according to the present invention (as shown in Fig.1) may be formed from sheet materials, selected according to specific criteria of application. Such criteria may include, for example, the desired dimensions (height, length and thickness), surface texture, composition, flexibility and other physical and economic characteristics or properties. Suitable facial materials may include, for example, synthetic paper, for example, polyolefin type, polystyrene type, various plastic films or sheets, for example, of polyolefin, polyvinyl chloride, polyethylene terephthalate, polystyrene, polymethacrylate and polycarbonate. Front material may be a multilayer polymeric sheet or may include a sheet. Multilayer materials can be coextruded or laminated materials can be obtained by lamination. In one embodiment of the material includes facial and coextruded multilayer materials and multilayer laminated materials. In addition, opaque white p�assessment may be formed by adding white pigment to one or more of the above resins and used as face material. In one embodiment of the implementation as the surface material used foam tape. Foamed film may be formed by conventional foaming operation. In another embodiment of the face material may be laminated substrate formed by connecting several single-layer sheet consisting of the above materials. Examples of such laminated bases may include a combination of paper from cellulose fibers with synthetic paper and laminated base of paper from cellulose fibers with plastic film or a plastic sheet. In another suitable embodiment of the facial material includes paper, coated and uncoated, metallized paper, aluminum foil, laminated paper and paper with a polymer material extruded on the surface of the said paper.

The thickness of the face material formed by the above-mentioned manner, is determined by the choice of the specific application criteria. Such criteria may include the desired end use. In one embodiment of the sheet thickness is in the range from about 10 μm to about 300 μm. In another embodiment of the sheet thickness ranges from about 20 μm to about 200 μm. In yet another embodiment of the sheet thickness ranges from approx�RNO 20 microns to about 150 microns. Optional, facial material can be treated with a primer or corona discharge, or plasma processing, to increase the strength of the bond between the face material and the dried composition for top coating to be formed on the surface of the face material.

Composition for top coating according to the present invention, which is formed as mentioned above, may have a predetermined thickness, on the basis of such factors as viscosity, type of application, amount and method, the desired end use, etc., In one embodiment, the implementation of the thickness can be from about 0.05 μm to about 2 μm. In one embodiment of the thickness can be from about 0.1 μm to about 1 μm, and in one embodiment of the thickness may range from about 0.15 microns to about 0.5 microns, and the thickness is measured after drying the applied composition.

Experiment 1

According to the first experiment we prepared several samples suitable for printing or receptive to printing top coatings that were tested, as outlined below. Each sample top coating was applied onto the underlying facial material, namely, biaxially-oriented polypropylene (BOPP) film with a thickness of 60 μm, treated with one side corona gold�ω (in this case, the firm Innovia Films). For brevity, the above-mentioned film we denote VORR. The coating is carried out on a laboratory installation for coating Dixon, equipped with a cylinder for a reverse gravure, with a chamber volume of 40 cm3/m2. The amount of the coating was 13 cm3/m2. During the coating line speed was 10 m/min, and the coating width of 24 cm from the sample material for top coating was applied to the facial cloth material width 26 see in This way each sample topcoat was applied over treated by corona discharge side face of the material. Thereafter, drying was performed for each sample at a temperature of 80°C, yielding a leaf temperature of 41°C. In practice, the finished design is usually to stick with a release strip, coated with a contact adhesive (PSA, Pressure Sensitive Adhesive) to the back side of the face material with a top coating.

Accordingly, the finished design will have to have a multilayer structure shown in Fig.1. More specifically, as shown in Fig.1, the finished structure 10 includes front material 12 having a top coating 14 deposited or otherwise formed on its front or first main surface. On the opposite, or reverse, side of face material 12 facial mate�ial 12 removable glued to release the strip 16 by a layer of adhesive 18, such as PSA.

The formation of point defects

The rate of formation of point defects of the upper surface was evaluated quantitatively in the so-called spreading test conducted twice for each sample as follows. First, cut out samples of the facial material coated with a top coating approximately the size of a 5×15 cm After a period of storage, the reverse side of the release strip is brought into contact with the covered upper surface side of the sample facial material, i.e. so that the opposite, or outer, surface of the strip in contact with the top or outer surface layer of the sample top surface. Then this configuration or system was placed under a press (put weight about 10 kg) for a period of approximately 4 hours. After a period overlay press the gasket separated from the sample facial material (i.e. to open the top or outer surface layer of the sample upper surface) and using the Hamiltonian of the syringe was applied drop model paint in 2 microliter (i.e. 0.2 wt.%. the crystal violet solution in isopropyl alcohol (IPA)) is covered with a top coating the front side of the specimen material and gave a drop to dry. It was applied 5 drops on each sample. Then measured the size of each�th dried drops, scanning the image of the drop and analyzing the image to obtain the droplet diameter on the Feret (i.e. the maximum distance between any two points in a drop). Experience suggests that a relatively larger drops tend to be relatively better quality top coat (i.e. relatively fewer point defects).

Sticking

Test for evaluation of the phenomenon of adhesion was carried out, after each measurement three times, using the following equipment and supplies:

- device for tensile testing with a torque sensor (50 N);

frame for measuring adhesion comprising copper strap width 4 mm;

two PE-plates (15×5 cm each);

ten parts of the finished design (15×5 cm each) for use as a buffer material;

- a roll of PP (polypropylene) film thickness of 60 microns (i.e. RR), which was on one side treated by corona discharge by the supplier (in this case, the company Innovia Films);

- a weight of 10 kg and

- oven with the temperature set at 50°C.

Immediately after application and drying of the upper surface of the test sheet RR imposed from above on a film coated with a top coating, making sure that treated by corona discharge side RR is in contact with the coated upper surface side and�pitamaha sample. From the combination of the test sample/RR" cut pieces measuring approximately 26×7 cm and marked by appropriate indexing. These pieces are then laid a bundle with PE plate and a certain amount of buffer material placed on the top and bottom stacking. Then top the whole laying placed a weight of 10 kg, the styling was allowed to stand for 5 days in a drying Cabinet at 50°C. After that, the laying out of the oven and combination of the test sample/RR separated from the supporting material (for example, D-plates and buffer material).

As shown in Fig.2, each combination of the test specimen 40/RR fix in a device for tensile testing, gently flaking two film material (i.e. the test sample with a top coating and film RR) to the point where it starts sticking (shown in a General view area 42). The free ends of the two layers are pulled in opposite directions copper strap 50 (mounted inside the frame 52) and fasten together again in the upper clamp 54. Then held by the frame 52 in the lower clamp (not shown) material 40 was extruded by the apparatus for testing a tensile strap above 50.

The raw data (i.e. the force required to extrude the material above the copper strap) for each dimension separately collected in the corresponding file. D�I each measurement was collected approximately 950 measurements. Each file is then imported into the appropriate program, which calculated the average adhesion force. For each sample was calculated strength clumping (log 70% percentile). To avoid edge effects, the first and last 100 measurements based excluded. Usually relatively lower values indicate relatively less sticking.

Paint adhesion

Paint adhesion was measured or determined in any other way using proofing flexographic Flexiproof 100 (production RK Print Coat Instruments Ltd.), equipped with a device for curing with ultraviolet (UV) and anilox roll with bands 3, 4, 5, 6, 8, and 13 cm3/m2. The paint used for this test was Magenta UV-curable flexographic dye, known as Flexocure Gemini™, manufactured by XSYS Printing Solutions (Department of Flint Group). The samples initially cut to a size of approximately 12.5×10 cm and then placed on a printing press. Each sample was applied at fast print speeds of 80, 50 and 20 m/min Immediately after printing two strips of tape (i.e. Scotch® Magic™ Tape 810 from 3M) was tightly pressed to the printed and left for about 5 seconds. The tape was peeled back (as soon as possible, at an angle of approximately 180°) and kept for analysis. To complete the above analysis remote tape glued �and a piece of paper and the paper was scanned in black and white at 300 dpi (dots per inch). The resulting image was analyzed with a suitable program to calculate the average density of grey on-field 170×1000 pixels. This led to a value lying in the interval between 70 (showing that almost all the paint has totals with tape) and 255 (showing that the paint was practically hotgirls with tape). End value for paint adhesion were obtained by averaging values for each tape at all three speeds (i.e. the sum of the 6 measurement points). Usually relatively higher values indicate more good adhesion.

Water resistance

The water resistance was tested by immersing the samples with the seal in the water at a given temperature for a specified time. Printing on the samples was performed in accordance with the above-described test paint adhesion, and each sample was applied printing at a speed of 50 m/min up To the moment of immersion in water every print was stored for approximately 4-5 days. The resistance test was carried out under three different conditions, namely:

- 95°C for 30 minutes (called here the pasteurization test);

- 0°C in 24 hours (called here a test with ice cooling);

- 40°C for 1 hour (called here a test with irrigation).

After the prescribed period of immersion, the samples were dried by gently rubbing with absorbent paper, and the test Le�that has applied and been done (again, similar to as in test for paint adhesion). Remote tape then analyzed essentially as described above in relation to the test for paint adhesion.

Gloss

The gloss of each sample was measured on blastomere (namely, on a laboratory reflectometer Dr. Lange RL3) essentially in accordance with ISO 2813:1994/edition 1:1997, as established by the International organization for standardization.

Opacity, brightness and full transmission

Opacity, brightness and total transmittance was measured on the device Hazegard Plus essentially in accordance with ASTM D-1003 and/or D-1044, as determined by ASTM International, originally known as American Society for Testing and Materials (American society for testing and materials).

The materials for experiment 1

In this experiment we used materials from the following table (i.e. table 1)

Table 1
ResinThe concentration of solids (wt.%)Supplier
Neorez R56338DSM Neoresins
Neorez R967937DSM Neoresins
Neorez R00 33DSM Neoresins
Neocryl XK9060DSM Neoresins
UCECOAT 784935Cytec Surface Specialties
UCECOAT 777035Cytec Surface Specialties
UCECOAT 777235Cytec Surface Specialties
UCECOAT 777335Cytec Surface Specialties
Other materials:
CX100100DSM Neoresins
Matting agent Aquasafe12Polytex
BOPP60Innovia

In particular, Neorez R563, Neorez R9679 and Neorez R600 represent an aliphatic polyurethane resin, Neoryl XK90 is an acrylic copolymer, SH is a cross-linking agent on the basis of aziridine. Matting agent Aquasafe is a dispersion of silicate, manufactured by Polytex. Resin UCECOAT (UC are dispersions of aliphatic arilirovaniya polyurethanes, having polymerizable unsaturated end groups.

Scheme of experiment 1

A number of different samples of the top coating was prepared as follows from table 2, as described above.

Table 2
XK90R600UC
7849
UC
7773
UC
7770
UC
7772
R563R9679AquasafeCX100Water
CE10,240,160,00480,010is 12.58
CE2 0,230,170,00480,014is 12.58
E10,160,240,00480,014is 12.58
E20,160,240,00480,014is 12.58
E30,160,240,00480,014is 12.58
E4 0,160,240,00480,014is 12.58

In table 2, the samples corresponding to symbols of the experiment CE and CE2 are comparative examples, and samples corresponding to the symbols E1, E2, E3 and E4, are representative of compositions in accordance with proposed here is suitable embodiments of the invention. The quantities indicated in table 2 given in grams per square meter. More specifically, samples CE and CE2 were prepared as model examples representing the currently available composition for top coating. The samples E1-E4 investigated the benefit of using a urethane acrylate-terminated groups. In particular, samples E1-E4 are UC-resins obtained in combination with R563 (which gives excellent printing, but has mediocre performance clumping).

The results of the trials in experiment 1

The formation of point defects

The above-described spreading test was performed after about 29 hours after applying on the face of the test sample material top cover. The results are shown in the diagram on f�G. 3. As you can see, the properties of the samples E1-E4, in comparison to the relatively poor characteristics SHE were superior to a more satisfactory level of sample CE2.

Sticking

Adhesion was measured as described above, after about 5 days after coating. The results are shown in the diagram shown in Fig.4. As you can see, in General, the properties of the samples E1-E3 improved, compared to the relatively poor performance SE, to a more satisfactory level of sample CE2.

Paint adhesion

Paint adhesion was measured as described above, after approximately 4 days after coating. The results are shown in Fig.5. Obviously, the properties of the samples E1-E4 are significantly better than the values for CE1 and/or CE2.

Water resistance

The results of the test for water resistance under different test conditions are shown in table 3 below, using a scale from 1 to 5. A very good indicator (i.e. the complete absence of a difference compared to the specimen that was not loaded) was estimated by point 1, on the contrary, very poor resistance was measured by the score of 5.

Table 3
95°C, 30 min0°C, 24 h40°C, 30 min
CE1111
CE2111
E1411
E2411
E3311
E4311

From these results it follows that the samples prepared with urethaneacrylate (i.e. samples E1-E4), have very good performance in the test with ice cooling, and the test with irrigation.

Optical properties

Optical properties "matte" and "gloss" (angle of incidence 80about) the following table 4. The table also includes the relative numerical rating on a scale of 1-5, where 1 indicates a very good optical properties, and 5 indicates poor optical properties.

Table 4
Opacity, %Gloss at 80ºNumerical estimation
CE12,791041
CE23,241041
E14,141031
E28,12894
E35,03963
E48,54825

As can be seen from table 4, the sample E1 is different optical properties comparable to the properties of the samples CE and CE2.

The findings from experiment 1

The use of reactive UV-curable resin top coating typically provides very good adhesion of paint and education indicators point defects, for example, compared to the control formulations comparative samples CE and CE2.

Experiment 2

By the way, analogic�m described above, was prepared a second set of samples with compositions shown in table 5 below, where the amount is given in grams per square meter. In experiment 2, samples CE, CE2 and E1 have the same composition as the samples marked with the same numbers in experiment 1.

Table 5
XK90R600UC7849R563R9679AquasafeCX100Water
CE10,240,160,00480,010is 12.58
CE20,2320,1680,00480,014is 12.58
E1 0,160,240,00480,014is 12.58
E50,120,160,120,00480,014is 12.58
E60,160,240,0048is 0.01912,57
E70,160,240,00480,02412,57
E80,240,160,00480,014is 12.58
E90,080,240,080,00480,014is 12.58
E100,240,160,00480,014is 12.58
E110,120,080,00240,00712,79
E120,480,320,00960,02812,16
E130,160,240,00480,014is 12.58
E14 0,320,080,00480,014is 12.58
E150,080,192of 0.1280,00480,014is 12.58

The resulting samples were analyzed using essentially the same evaluation methods as described above. The results are summarised in table 6 below. Because small changes in the experimental design and/or because of other factors for the samples, which was also tested in experiment 1, some of the absolute value of the measurement results obtained in experiment 2 may not match with the values obtained earlier. However, the relative properties and performance of these samples remained largely consistent.

The formation of point defects 95
Table 6
AdhesionGlossOpacity, %PasteurizationAdhesion
CE1-0,8992,1915200
CE2-1,6962,8315220
E1-1,2953,3341253
E5-1,2963,2914241
E6-1,1963,2312253
E7-1,1973,2612 251
E8-1,1963,1315236
E9of 1,4963,2445226
E10-1,695of 3.6941248
E11-1,3982,4043248
E12-1,5924,4741216
E13-1,3973,1815226
E14-1,73,5931242
E15-1,5972,6615211

In table 6, regarding pasteurization and print quality or the formation of point defects, a score of 1 means excellent, 5 = poor. The best results were obtained with samples of E6 and E7 (which had a higher amount of cross-linker). These samples combine the good properties of pasteurization with a good indicator of pinhole defects in the coating and superb ink adhesion.

The findings from experiment 2

Experiment 2 showed that the composition for top coating prepared in accordance with aspects of the present invention, is able to give very good performance adhesion of UV inks simultaneously while maintaining good performance, water resistance, adhesion and the formation of point defects.

In particular, in table 7 the comparative numerical estimation of different samples with each other. Numerical estimates for each category of tests is based on a scale of 1-5, where 1 is the highest rating and 5 is the worst. The average score for �of each sample is a weighted average of the individual scores for this sample. In particular, each category of tests is equal to a weighting factor, with the exception of adhesion, which is two times greater weighting factor than other categories of tests.

Table 7
AdhesionGlossOpacity, %PasteurizationThe formation of point defectsAdhesionTotal average
CE15111553,3
CE21211542,6
E1422411 2,1
E54221422,4
E64221211,9
E74221211,9
E84221532,9
E95224533,4
E105224 112,3
E114214312,3
E125334153,7
E134121543,0
E145223122,4
E154111553,1

Experiment 3

The composition of the sample E7 from experiment 2 were applied to Metalli�yovanny paper, namely, the coated paper had himself besieged under vacuum aluminum. Such metalized paper can be obtained, for example, from such suppliers as Vacumet Corp., Rotoflex Metallized Paper Spa. and Glatfelter. In this experiment, the top coating was deposited on the metallized side or layer of facing material.

Paint adhesion was tested as described above on a prepared sample of experiment 3. As a comparative example, as the standard, used metallized paper uncoated. In the case of material without coating the paint didn't find any adhesion to the metallization layer. The sample with printing, made with a top coating as described herein, exhibits very good adhesion of paint to the top surface, such that attempts to remove paint result in tearing of the paper layer under the metallic layer.

In any case, it should be clear that in connection with the submitted here by private typical embodiments of the implementation of some structural and/or functional characteristic features described herein as included in the defined elements and/or components. However, it is assumed that these characteristics can be the same or close to the benefit to be included in other elements and/or components, where appropriate. It should also be understood�about, that the various aspects of typical embodiments can be applied selectively, depending on the particular case to reach other alternative embodiments that are suitable for the desired application, thus, other alternative embodiments of the implement relative advantages of aspects.

It should also be understood that the functionality described herein private elements or components can be properly implemented using hardware, software, firmware or combinations thereof. In addition, it should be understood that certain elements described herein as incorporated together, may, in appropriate circumstances, be the elements used independently or distributed in any other way. Similarly, a set of private functions described herein as being performed by one specific element, may be executed in several different elements that operate independently to perform individual functions, or some individual functions can be split and carried out in several different elements operating in cooperation. Alternatively, some of the elements or features described and/or shown here otherwise as featuring�yosia from each other, can physically or functionally combined, if appropriate.

In short, the present description has been provided in respect of the preferred embodiments. Obviously, someone at reading and understanding the present description can come to mind modifications and changes. It is anticipated that the invention should be considered as including all such modifications and changes to the extent that they fall within the scope of the attached claims of the invention or its equivalents.

1. Suitable for printing or receptive to printing cover to the front of the material, and the top coating contains
- simple polyester urethane;
- polyurethanebased;
- crosslinking agent, where the crosslinking agent is contained in an amount of from about 2 parts to about 15 parts per 100 parts of all solid substances; and
- additive, preventing adhesion.

2. Suitable for printing or receptive to printing top coating according to claim 1, wherein polyurethanebased is aliphatic polyurethanecoated.

3. Suitable for printing or receptive to printing top coating according to claim 1, wherein the polyurethane is dispersed in water with polyurethane.

4. Suitable for printing or receptive to printing top coating according to claim 1, wherein polyurethanebased is dispersible in water, polyur�cancilation.

5. Suitable for printing or receptive to printing top coating according to claim 1, wherein polyurethanebased has the functionality of two or three.

6. Suitable for printing or receptive to printing top coating according to claim 1, wherein the crosslinking agent is soluble or dispersible in water.

7. Suitable for printing or receptive to printing top coating according to claim 1, wherein the crosslinking agent is aziridine cross-linking agent.

8. Suitable for printing or receptive to printing top coating according to claim 1, wherein the crosslinking agent is contained in the top coating in an amount greater or equal to about 4 parts per 100 parts of all solids.

9. Suitable for printing or receptive to printing top coating according to claim 1, wherein the crosslinking agent is contained in the top coating in an amount of from about 4 parts to about 7 parts per 100 parts of all solids.

10. Suitable for printing or receptive to printing top coating according to claim 1, wherein the upper cover further includes a dispersion of silicate.

11. Suitable for printing or receptive to printing top coating according to claim 1, wherein the upper cover further includes an additive that improves the slide.

12. Sheet or roll structure on the surface of which is formed suitable for printing or susceptible�e to print top coating according to any one of the preceding paragraphs.

13. Sheet or roll structure according to claim 12, wherein the structure contains personal material, on perceiving the print side is formed on the upper floors.

14. Sheet or roll structure according to claim 13, wherein the structure additionally includes anti-adhesive strip, with the specified facial removable material glued to its underside to release the glue strip, and specified opposite side face of the material opposite him susceptible to the print side.

15. Sheet or roll structure according to claim 14, wherein the adhesive is a contact adhesive.

16. Sheet or roll structure according to claim 13, in which the facial material includes at least one layered material, film or paper.

17. Sheet or roll structure according to claim 13, in which the face material comprises polypropylene.

18. Sheet or roll structure according to claim 17, in which the polypropylene is biaxially oriented.

19. Sheet or roll structure according to claim 13, in which the facial material includes metallic paper.

20. Sheet or roll structure according to claim 19, in which the metalized paper includes at least one metal surface, and the top coating is formed on said metal surface.



 

Same patents:

FIELD: textiles, paper.

SUBSTANCE: invention relates to the pulp and paper industry and relates to the bases for printing with coating that provides improved printing quality and resolution capability at reduced consumption of ink. The product in the form of a paper substrate has on at least one of the first and second surfaces coating swelling under the influence of water, which thickness is less than 10 mcm. The base coating comprises some amount of pigment of coating, which is sufficient to impart at least one surface of the Parker surface evenness of about 4 and is dispersed in a binder matrix for the pigment of coating swelling under the influence of water, in a weight ratio of the coating pigment to the binder matrix of at least 2:1. The pigment of coating comprises larger porous coating pigment particles and smaller coating pigment particles in a weight ratio of at least 0.2:1. Coating of the base provides the porous surface receptive to ink.

EFFECT: invention provides enhanced printing quality and image resolution capability on paper base with coating on an inkjet printer at a reduced level of use of the ink.

57 cl, 4 dwg, 6 tbl, 3 ex

FIELD: printing.

SUBSTANCE: invention relates to a method of manufacturing a smooth or ultra-smooth sheet material for overprinting. It comprises the following steps: manufacturing a multilayer structure consisting of a lower layer of plastic film, an intermediate anti-adhesive layer, and also an outer layer for overprinting, gluing one side of the substrate or the upper side of the layer for overprinting, placement of the substrate on the layer for overprinting with their laminating followed by removal of the plastic film from the layer for overprinting, and this layer for overprinting forms on the sheet of smooth or ultra-smooth side.

EFFECT: invention provides creation of an ultra-smooth sheet material suitable for overprinting and suitable for complete recycling, when possible.

25 cl, 6 dwg, 8 ex

Information carrier // 2533821

FIELD: chemistry.

SUBSTANCE: invention relates to information carriers. Claimed is an information carrier, successively including a substrate, selected from a polymer-covered paper, synthetic paper and plastic films, the first ink-receiving layer and the second ink-receiving layer, with the ink-receiving layer containing at least one substance, selected from aluminium oxide, aluminium oxide hydrate and highly dispersive silicon oxide, polyvinyl alcohol and boric acid, with a weight ratio of the boric acid and polyvinyl alcohol content in the first ink-receiving layer constituting 2.0 wt % or more and 7.9 wt % or less, with the second ink-receiving layer containing highly-dispersive silicon dioxide, polyvinyl alcohol and boric acid, and a weight ratio of the boric acid and polyvinyl alcohol content in the second ink-receiving layer constitutes 10.0 wt % or more and 30.0 wt % or less.

EFFECT: claimed carrier makes it possible to prevent cracking after the application of ink-receiving layers, possesses the high ink-absorbing ability and a resistance to cracking in bending.

6 cl, 4 tbl, 68 ex

Data storage device // 2532419

FIELD: printing.

SUBSTANCE: data storage device comprises a substrate and at least one ink receiving layer. The first ink receiving layer, which represents at least one ink receiving layer, comprises inorganic particles having an average primary particle size of 1 mcm or less, and the inorganic particles coated with the metal oxide. The inorganic particles covered with the metal oxide have an average primary particle size of 15.0 mcm or more. When the maximum value of the FLOP data storage device is represented as FLOPMax and the minimum value of FLOP is represented as FLOPMin, the FLOPMin is 2.5 or more and the value FLOPMin/FLOPMax is 0.80 or more and 1.00 or less.

EFFECT: proposed data storage device has a high degree of pearl lustre.

8 cl, 2 dwg, 3 tbl

FIELD: printing.

SUBSTANCE: reversible thermosensitive medium for printing, comprising a base, a reversible thermosensitive layer for printing, provided on the base, and the antistatic layer, at that the antistatic layer is provided on at least a the reversible thermosensitive layer for printing or the substrate surface opposite to its surface on which the reversible thermosensitive layer for printing is provided, the antistatic layer comprises spherical fillers and a curable electroconductive polymer, and the spherical fillers satisfy the following expression (1): 4 ≤ the average diameter of particles of the spherical fillers/thickness of the antistatic layer ≤ 6… (1).

EFFECT: invention has improved antistatic properties.

12 cl, 15 dwg

Tool marking // 2530908

FIELD: process engineering.

SUBSTANCE: invention relates to method of tools marking. This method comprises provision of tool, its thermal treatment, provision of tool primer ply, printing on tool and application of electrolytic coat thereon. For printing of pattern at primer ply, a layer of dye is used. Layer of dye includes at least one ID element. Said ID element includes at least one ID zone with dye, background section around ID zone with no dye, and boundary line located around background section with dye. Electrolytic coating is applied to section without ID zone and boundary line. Note here that there a sharp contrast between coating and dye ply.

EFFECT: clear and stable mark.

14 cl, 11 dwg

Recording medium // 2526007

FIELD: physics, computer engineering.

SUBSTANCE: recording medium successively includes a substrate, a first ink-receiving layer and a second ink-receiving layer, wherein content of boric acid in the first ink-receiving layer is 2.0 wt % or more and 7.0 wt % or less with respect to content of polyvinyl alcohol in the first ink-receiving layer, and content of boric acid in the second ink-receiving layer is 10.0 wt % or more and 30.0 wt % or less with respect to content of polyvinyl alcohol in the second ink-receiving layer; the outermost surface layer of the recording medium has particle content of 0.5 wt % or more and 5.0 wt % or less with respect to content of an inorganic pigment, said particles having secondary particle average size of 1.0 mcm or more and 20.0 mcm or less.

EFFECT: disclosed recording medium reduces cracking when bent.

5 cl, 6 tbl

FIELD: chemistry.

SUBSTANCE: method of instrument marking includes formation of an instrument 10, performing a depressed marking 15 in the instrument 10, quenching of the instrument 10, coloration of the instrument 10 in order to create a colour layer 20 on the instrument 10 in the depressed marking 15 and near it, cleaning the instrument 10 from excess of the colorant, overflowing the depressed marking 15, coloration of the instrument 10 into black colour to create a coloured black layer 40 on the instrument 10, except for the depressed marking 15, and painting the instrument 10 to form a transparent layer of paint 50 on the instrument to create luster and prevent rust.

EFFECT: marking is clear, and the applied coating protects the instrument from rust.

9 cl, 8 dwg

FIELD: printing.

SUBSTANCE: present invention relates to a sheet for printing having improved drying time of the image. The sheet for printing comprises a substrate comprising lignocellulosic fibres, and at least 0.02 g/m2 of a water soluble divalent metal salt which is applied by a gluing press. The test value of gluing Hercules ("HST") of the substrate is about from 3 seconds to 300 seconds. The HST value and the amount of divalent metal salt is selected so that the sheet for printing has a percentage of ink transfer ("IT%") equal or less than about 60.

EFFECT: proposed sheet for printing provides improved drying time of the image.

27 cl, 6 dwg, 10 tbl, 4 ex

FIELD: printing.

SUBSTANCE: invention relates to recording sheets used in printing processes. The recording sheet comprises a substrate of the web of cellulosic fibres and the sizing composition. The sizing composition comprises a binder and a divalent metal salt. The said salt in a concentration of at least 51% of the total concentration and not less than 2500 parts per million is located at a distance within 25% of the total substrate thickness from at least one surface of the said substrate. At that the recording sheet has Qtotal as a measure of the amount of the sizing agent in the transition from the outer edges towards the middle of the sheet in cross-section of less than 0.5. Also a method of production of the recording sheet is described.

EFFECT: said substrate and the sizing agent interact with formation of the I-shaped structure of the recording sheet which provides an optical density of black printing of at least 1,15.

20 cl, 15 dwg, 2 tbl, 10 ex

FIELD: paper-and-pulp industry.

SUBSTANCE: when ground paper is manufactured, it is coated with ink-accepting coating. The latter contains latex binder, water-soluble binder, pigment mixture of amorphous silica with colloidal cationic silica and colloidal alumina, and ink-fixing agent. Coating operation is performed in two steps, weight ratio of coating applied in the first step to that in the second step ranging from 0.34:1 to 0.66:1. Reverse face of base paper is coated by detwisting coating. Further, coating is ennobled via superglazing at pressure in supercalender roll gap 30-75 bar.

EFFECT: improved workability of process and improved quality of paper due to increased surface strength.

4 cl, 7 ex

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: 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: 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: 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

FIELD: printing materials.

SUBSTANCE: invention relates to printing ink containing first colorant and second colorant, at least one of the colorants including fluorescent color. First and second colorants are located separately on a printing medium while printing ink ensure obtaining printed image with improved fluorescent properties. Invention further relates to printed image and a method of forming printed image utilizing such ink. Invention solves the problem of reducing fluorescence and improving fluorescent properties by way of separating fluorescence region and colored region as well as by way of formation of area on printing medium wherein points of coagulated first colorant are spread in the region of fixed second colorant so that absorption of fluorescent emission energy from fluorescent colorant is considerably reduced by coexisting colorant involving corresponding technologies. The latter are based on a novel technical conception residing in improvement of characteristics of fluorescent emission of a second colorant used in printing ink including a first fluorescent colorant, which, being excited at specified excitation wavelength, fluoresces within specified wavelength range.

EFFECT: improved fluorescent properties of printed image.

15 cl, 31 dwg, 4 tbl, 33 ex

FIELD: polymer coatings.

SUBSTANCE: invention relates to using powder composition to coat jet printing materials utilized as visual information carriers. Powder composition contains (i) one or several powder silane-containing polyvinyl alcohols based on copolymers of fully or partially hydrolyzed esters having degree of hydrolysis from 75 to 100 mol % and (ii) one or several water re-dispersible polymer powders based on homopolymers or copolymers of one or several monomers selected from group including nonbranched or branched C1-C15-alkylcarboxylic acid vinyl esters, (meth)acrylic acid esters with C1-C15-alcohols, vinylaromatic compounds, olefins, dienes, and vinyl halides.

EFFECT: enabled manufacture of wear-resistant coatings to coat both paper and polymeric substrates, avoided undesired increase in viscosity during composition preparation procedure, and enabled more flexible variation in contents of solids in chalking mass.

10 cl, 15 ex

FIELD: chemistry.

SUBSTANCE: invention pertains to ink for an ink-jet printer. Description is given of the ink for an ink-jet printer, containing 62-77 mass % water, 10-18 mass % dye, X (%), water soluble organic substance 1 and 2.0-15 mass %, Y (%), water soluble organic substance 2. Viscosity of the ink ranges from 1 to 5 cP at 25°C, content X (%) of substance 1 and content Y (%) of substance 2 satisfies the relationship in formula (I) and formula (II): (I) 0.15 ≤ Y/X ≤ 0.9; (II) 15 mass % ≤ X+ Y ≤ 32 mass %. Compound 1 is a water-retaining water soluble organic compound, with difference between the water-retention capacity in a surrounding medium at 23°C and humidity of 45% and water-retention capacity in a surrounding medium at 30°C and 80% humidity at 36% or less. Compound 2 is a water soluble organic compound, different from the dye and from the water soluble organic compound 1.

EFFECT: proposed ink sufficiently suppresses the effect of twisting printing material and provides for stable injection.

26 cl, 6 dwg, 6 tbl, 21 ex

FIELD: polygraphy.

SUBSTANCE: invention relates to water-based printing dye used in the set of reaction liquid with water-based printing dye for image formation. The water-based printing dye is proposed making a part of the system using a reaction liquid including, at least, a polyvalent metal and water-based printing dye comprising, at least a pigment dispersion wherein the pigment is dispersed in anionic polymer disperser. Here note that the water-based printing dye meets the specified requirements.

EFFECT: production of a stable jet printing irrespective of the printing conditions, formation of uniform image with a high resistance to deterioration, clear image even in two-side printing, high-quality image sharpness.

18 cl, 1 tbl, 10 ex

FIELD: polygraphy.

SUBSTANCE: invention relates to water-based printing dye used in the set of reaction liquid with water-based printing dye for image formation. The water-based printing dye is proposed making a part of the system using a reaction liquid including, at least, a polyvalent metal and water-based printing dye comprising, at least a pigment dispersion wherein the pigment is dispersed in anionic polymer disperser. Here note that the water-based printing dye meets the specified requirements.

EFFECT: production of a stable jet printing irrespective of the printing conditions, formation of uniform image with a high resistance to deterioration, clear image even in two-side printing, high-quality image sharpness.

18 cl, 1 tbl, 10 ex

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