Method of applying pattern on substrate

FIELD: process engineering.

SUBSTANCE: invention relates to decoration of plastic surface, particularly, to applying patterns on plastic substrate. Proposed method comprises: applying layer of paint including magnetically oriented pigments on substrate; affecting said paint by magnetic field to orient pigments along force lines to produce pattern on paint layer, and curing paint on substrate. Note here that magnetic field is generated by one magnetic part implanted in plastic substrate being coated.

EFFECT: higher quality of patterns, higher process efficiency.

8 cl

 

The present invention relates to a method of applying a pattern on a substrate, applying a paint comprising magnetically oriented pigments. It also applies to products with the pattern marked in this way.

EP 556449 discloses a method of decorating a substrate with a paint containing magnetically oriented flake pigments that form a pattern of optical depth under the influence of the magnetic field of the magnet, which has a contour corresponding to the desired pattern. The magnet must remain in place until, until dry paint film. During hardening of the paint film magnet should not move.

FR 2113650 discloses a method of decorating a substrate oriented magnetic flake pigments, where the magnetic field, outlining the desired pattern on the substrate is a primer layer containing a constant magnetic particles. Only a relatively weak magnetic field can be generated in the thin primer layer. When using such weak magnetic fields are difficult to obtain images with optical depth.

WO 02/090002 discloses a similar method, in which the magnetic field provided by the magnetic imprint on the substrate on which the paint is applied. This method is particularly suitable for documents or banknotes, but less approach is Asim for molded substrates, such as plastic parts.

The purpose of the invention is to find a way to improve the quality decorative drawings on plastic substrates, in particular to improve the appearance of sharp lines. An additional goal is to reduce the time required for the process.

The purpose of the invention is achieved by the method for decorating a plastic substrate, comprising the following stages:

- applying a layer of paint that includes magnetically oriented pigments, on a substrate;

- effects on top of the mixture, not yet hardened paint magnetic field, whereby the pigments are oriented along the field lines of the magnetic field to obtain a pattern on the layer of paint; and

- hardening of the paint on the substrate;

characterized in that the magnetic field is generated by at least one magnetic part, included in the coated plastic substrate, for example formed in a plastic substrate.

In the first embodiment, the magnetic part, included in the substrate, is a permanent magnet having a contour corresponding to the desired pattern.

The magnet can be incorporated into the substrate when it is placed in the form and molding plastic around it, for example, by injection molding, reactive injection molding, the molding of hollow articles fill is whether the centrifugal molding, forming a dunking, sheet molding, blow molding, extrusion molding, a process to obtain a uniaxially oriented fibrous plastic or any other suitable method of obtaining. The smaller the distance between the magnet and the surface of the substrate, which is applied to the image, the clearer the details of the picture. The smaller the distance between the embedded magnet and the surface of the substrate, the more visible parts. To have a real distance in combination with distinct parts, the magnet can, for example, to close up approximately 1-1 .5 mm below the surface of the substrate.

In an alternative embodiment, the magnetic portion is formed in the substrate part of the substrate that includes the dispersed magnetic or namagnichivaemost particles that are magnetized to generate the desired magnetic field. This leads to a more uniform mechanical and physical properties.

Magnetic particles can, for example, dispersing in the substrate, mixing them with the source material before molding, and subsequently shaping the mixture. Subsequently, the particles are magnetized in such a way that they generate a required magnetic field.

After curing, the layer of magnetic paint half of the plastic substrate can, if necessary, to demagnetize. This can be done, for example, by the use of such forces the magnetic field after the curing or drying of the paint. This method will not affect the appearance of the pattern on the layer of paint, but will reduce or eliminate the magnetic field in the finished product.

Magnetic particles dispersed in the substrate may, for example, be a ferrite particles such as barium ferrite or strontium ferrite, alloys of rare earth metals, such as alloys of cobalt and samarium, chromium dioxide, bismuth, manganese, neodymium, or similar magnetic materials. Typically the particle size of the magnetic particles can vary in the range from about 10 microns up to 20 nm or above.

If desired, the substrate comprising dispersed magnetized or magnetic particles, can be obtained in two or more phases, for example, by applying the technology of the two-stage molding, where the first part includes namagnichivaemost or magnetic particles, is injected first, followed by a second injection, which can be without namagnichivaemost or magnetic particles, for example, to reach the selected properties or profitability.

After molding or forming substrate that includes namagnichivaemost particles, the particles are magnetized in a pattern corresponding to the pattern, which must be received in the paint film. This can be done by using a strong permanent magnet, for example, on the basis of the afloat neodymium, iron and boron, such as Nd12Fe14B, or electromagnet. The magnet may have a contour corresponding to the desired pattern, or it may move along a path describing a desirable figure.

The substrate can, for example, be made of any thermoplastic or thermoset material type plastic, such as polyvinyl chloride, polystyrene, Acrylonitrile-butadiene-styrene (ABS), polycarbonate, polyamide, polyurethane, polyester, polyterephthalate, acrylic plastics, such as emission spectra obtained for pure, polyolefins such as high density polyethylene or medium density, polybutene or polypropylene, etc. If desired, you can also use suitable mixtures or hybrids of these types of plastics. Alternatively, the substrate can be made of any other type of moldable or curable material, such as ceramic materials or aluminum.

If desired, the substrate can be applied primer coating before the paint is applied with effect from magnetically oriented particles. It is particularly suitable in the case of polyamide or polypropylene substrates.

Magnetically oriented pigments in the paint can be pigments, obtained from magnetic or namagnichivayushchego material. The pigments may have any suitable shape, but the scales and plates show a more clear what e drawings. Suitable magnetic pigments based on, for example, iron, Nickel, cobalt, copper, silver, gold, chromium, gadolinium, ytterbia, dysprosium, arbie and the like or their alloys, oxides or mixtures. Especially suitable are the ferrite flakes. Pigments in the form of flakes may also be a multilayered pigments having at least one magnetic layer and, optionally, one or more non-magnetic layer. Suitable examples include, for example, mica, coated Fe2O3or mica coated with CoFe2O4. Other suitable magnetic pigment may be, for example, mica, coated with a polymer mixture containing an iron oxide-cobalt and cobalt oxide. Additionally suitable reflective magnetic flake pigments can be used to create labels with brilliant highlights or contours. Alternatively, you can apply the interference pigments, such as bias coloring pigments, one or more than one covering layer so that the interference pigments created labels that differ in color and/or different intensity of color when viewed at different angles.

Suitable soft magnetic materials pigments may, for example, to have a coercivity that is equal to less than about 2000 OE, for example less than about 30 OE. Coverage includes such soft magnetic materials that do not become magnetic in response to the unmagnetized metal, such as steel, brass or aluminum.

Scales can have an average particle size equal to, for example, 2-60 microns, for example 10-30 micrometers. The average thickness of the particles scales may, for example, be from 1 to 8 micrometers.

Composition for application also includes one or more binder and the media. Binders are translucent after drying of the paint film. Suitable binders are, for example, Alcide, polyurethanes, polyesters, latex binders, such as vinyl binders, acrylates, etc. Binders can be physically drying, drying under the influence of oxidation or they can be chemically cured, for example, by component, curing agent or cross-linking agent or they may be able to cure actinic radiation such as UV radiation.

Paint for use in the present invention will typically be a liquid paint, such as paint with solvent. Suitable organic solvents are, for example, aromatic solvents such as toluene or xylene, and aliphatic solvents such as ketones, glycols, for example edildigi the ol, butylglycol, butyldiglycol, or their acetates, such as atilglukuronida, butylpyrocatechol, butyldiglycol and methoxypropylacetate. Commercially available solvents are, for example, Shellsol®D40, aliphatic hydrocarbon solvent available from Shell, Dowanol®PMA from Dow and Solvesso®-150, available from ExxonMobil. An alternative composition for application in accordance with the invention can be a composition based on water, if necessary, includes auxiliary solvents or wetting, such as glycols. Inorganic enamels or coatings, such as coatings on the basis of soluble glass, Sol-gels, or system without solvents, such as hot melt paints or powder coatings, can also be used if desired.

Although the paint film must be transparent at least to some extent, the ink may optionally include additional magnetic or non-magnetic pigments, such as titanium dioxide, zinc oxide, leaded zinc oxide, titanium calcium, carbon black, yellow oxides, brown oxides, tan oxides, raw and burnt Sienna or umber, green chromium oxide, phthalocyanine green, blue phthalonitrile, ultramarine blue, cadmium pigments, chrome pigments or Luba is their mixtures. You can also use fluorescent pigments, pearlescent pigments, dichroic pigments or pigments with a different special effect for specific special effects. You can also add pigments as fillers, such as clay, silica, talc, wollastonite, wood flour and the like.

The paint film can be applied any suitable film thickness. Appropriately, the film thickness can be up to about 50 micrometers, for example, 20 micrometers. If you use the system the primary coating and a clear coating, the base coating may, for example, have a thickness of approximately 8-15 microns, and a transparent coating may, for example, have a thickness of approximately 20-30 microns. If applied as a clear coating, it can be used on wet or instantly dried the main floor with a thin layer and cured at the same time. Alternatively, it can be applied on the hardened layer of the primary coating. Suitable transparent coating can, for example, be based on the isocyanate-paleologou curing system. It is also possible system monoparty.

If desired, the paint can be applied on pre-coated substrate. The substrate can be primed with primer or painted opaque or semi-transparent layer of paint. You can get the special is global effects, if namagnichivaemost layer of paint is applied on the previously deposited film like paint with a magnetized pattern. Drawing on a substrate pre-coated with paint effects, such as pearlescent, metallic or fluorescent inks will also give special effects.

The paint effect is suitable for decoration of virtually any type of plastic product, such as parts of automobiles, electric or household appliances, mobile phones, skiing, protective headgear for motorcyclists, plastic or glass bottles or packages in the form of a tube, computer case, players, book covers, etc.

The paint can be applied in any suitable manner. A suitable method of application is, for example, spray application.

1. The method of drawing on a plastic substrate, comprising the following stages:
- applying on a substrate a layer of paint, which includes oriented magnetic pigments;
- impact on the paint magnetic field, whereby the pigments are oriented along the field lines of the magnetic field to obtain a pattern on the layer of paint; and
- hardening of the paint on the substrate;
characterized in that the magnetic field generated by one magnetic part, included in the coated plastic substrate.

2. The method according to claim 1, characterized in that mo is the magnetic part, included in the plastic substrate, is a permanent magnet having a contour corresponding to the desired pattern.

3. The method according to claim 1, characterized in that the included magnetic part of the magnetic particles, dispersed in the plastic substrate, which are magnetized to generate the desired magnetic field.

4. The method according to any one of the preceding paragraphs, characterized in that after the solidification of the layer of magnetic paint part of the substrate demagnetized.

5. The method according to claim 1, characterized in that the first substrate is applied primer.

6. The product is equipped with a coating that includes magnetically oriented particles with a circuit for the formation of the drawing, wherein the figure covers magnetic or nominativus part introduced into the substrate.

7. The product according to claim 6, characterized in that the substrate includes a polymer matrix that includes a magnet.

8. The product according to claim 6, characterized in that the substrate includes a polymer matrix comprising magnetic or namagnichivaemost particles.



 

Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to method of coating substrates. First stage comprises making substrate. Composition is applied on substrate first side. Proposed composition comprises inorganic compound containing at least one metal and/or semimetal selected from the following group including Sc, Y, Ti, Zr, Nb, V, Cr, Mo, W, Mn, Fe, Co, B, Al, In, Tl, Si, Ge, Sn, Zn, Pb, Sb, Bi or mixes thereof, and at least one element selected from group including Te, Se, S, O, Sb, As, P, N, C, Ga or mixes thereof. Then composition is dried. Now, at least one coat is applied onto substrate first side whereon composition was applied. Composition comprises silane of general formula (ZI)Si(OR)3, oxide particles, polymer and initiator. ZI stands for R, OR or Giy (Gly = 3-glycidyl hydroxypropyl). R stands for alkyl residue with 1 to 18 atoms of carbon. R may differ or be equal. Oxide particles are selected from oxides of Ti, Si, Zr, Al, Y, Sn, Zn, Ce or mixes thereof. Coat is dried. Then, at least one protective coat is applied on second side of substrate. Additionally, at least one glue layer may be applied on protective layer.

EFFECT: protection against ambient effects, ruling out substrate top surface deformation.

38 cl

FIELD: process engineering.

SUBSTANCE: invention relates to production of multilayer coat sheet with selection of visual properties, to method of finishing substrate sections and to multilayer coat sheet with selected visual properties. Proposed multilayer coat sheet is made with relative tensile elongation making at least 150%. In compliance with this method, data on visual properties of the surface are determined. The data is transmitted to system able to receive such data. Data on coat composition with acceptable set of visual properties is defined. Then, coat composition with selected visual properties is produced. Bearing sheet is produced with a glue layer and lining layer on one surface. Coat composition with selected visual properties is applied on one surface of bearing sheet to produce a coat layer that adds colour and/or effect. Said coat layer is dried. Transparent finishing coat is applied atop aforesaid coat layer that adds colour and/or effect. Now, said transparent finishing coat is dried and solidified. If bearing sheet without glue layer and lining layer is used, then glue layer and lining layer are applied on uncoated surface of bearing sheet.

EFFECT: ruling out damaging multilayer sheet in applying it onto curved surfaces.

8 cl

FIELD: chemistry.

SUBSTANCE: invention relates to sol for applying sol-gel coating onto a surface. The sol contains at least one organometallic compound of zirconium, aluminium or titanium, at least one organosilane compound, at least one compound selected from acids, bases, glycols and ethoxy ethanol as a catalyst. The sol also contains demineralised or distilled water. The total amount of at least one organometallic compound of zirconium, aluminium or titanium and at least one organosilane compound is greater than 50%. The sol also contains less than 5% harmless organic solvent such as non-toxic aliphatic alcohols. The sol also contains at least one surfactant and organic binder. The invention also relates to a set comprising a first container which contains a first portion in form of liquid which contains at least one organometallic compound of zirconium, aluminium or titanium, at least one compound selected from acids, bases, glycols and ethoxy ethanol, and a second container which contains a second portion in form of a liquid which contains an organosilane compound. The sol-gel layer is obtained by depositing the said sol onto a substrate. The layer is dried to obtain a sol-gel layer on the substrate. The sol-gel layer is used to endow the surface of the substrate with corrosion resistance. The surface of the substrate can have one or more sol-gel layers.

EFFECT: method enables obtaining the desired coating thickness without deterioration of anti-corrosive properties, as well as obtaining a coating with uniform thickness without overlapping.

65 cl, 2 ex

FIELD: process engineering.

SUBSTANCE: invention relates to dark-colour coats with minimum absorption of radiation in near IR spectrum, and may be used in automotive coats, construction paints, industrial coats, spacecraft coats and flexible coats. Proposed system comprises first IR-reflecting layer that contains IR-reflecting pigments in gummy binder. Second layer absorbing visible radiation features dark colour and is IR-translucent. Second layer comprises a shade in gummy binder and nano-sized pigments with mean particle size of 100 nm. Coated article comprises multilayer coat system. Method of controlling temperature increase in substrate subjected to IR radiation comprises applying composition of IR-reflecting coat on substrate, to make the first layer, and applying second layer of composition absorbing visible radiation and identical to second layer in multilayer dark composition. In compliance with second version, aforesaid shade may also have maximum milkness of 1 %, while coat system features blackness index of, at least, 240. Coated article comprises above described coat system.

EFFECT: coat system does not absorb IR-radiation.

22 cl, 1 dwg, 6 tbl, 16 ex

FIELD: chemistry.

SUBSTANCE: invention relates to formation of a surface with prolonged anti-adhesion capacity using fluoropolymer resins. Described is a method of obtaining an anti-adhesion surface on a substrate involving (a) depositing a ground coating, obtained through spray drying onto the said substrate, (b) depositing a powder coating onto the obtained ground coating layer to form a coating layer on the said ground coating layer, where the said ground coating contains tetrafluoroethylene/perfluoroolefin copolymer, where the perfluoroolefin contains 3-8 carbon atoms, and a polymer binding substance selected from a group of polyestersulphones, polyphenylenesulphides and polyarylene esterketones, and said coating contains a copolymer of tetrafluoroethylene/perfluoro(alkylvinyl ether); (c) sintering said ground coating and said coating layer to form an anti-adhesion surface. Described also is a substrate obtained using said method. The adhesion quality is determined by a peel test after boiling in water.

EFFECT: method provides excellent and longer adhesion of the coating system with the substrate.

19 cl, 8 tbl, 7 ex

FIELD: physics.

SUBSTANCE: measurement pipe (1) of the measurement sensor of a magneto-inductive flow metre built into a pipeline consists of a support metal pipe (2) having a lining (3) inside. There is a layer of binding liner (4) for joining the lining and the support pipe. The lining and priming coat are made from polyurethane suitable for drinking water. The priming coat is obtained by depositing and hardening a first multi-component system containing isocyanate, particularly diisocyanate, as well as two, or a polyatomic alcohol, and the lining is obtained by depositing a second multi-component system onto the priming coat and then holding, where the second multi-component system contains isocyanate, particularly diisocyanate, two, or a polyatomic alcohol and a catalyst.

EFFECT: measurement device meets high chemical-biological and hygiene requirements for use in drinking water, device is cheap to make.

30 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: protective lacquer composition for articles made from copper-zinc alloys based on KC-0125 lacquer contains 68±2% solution in diacetone and isopropyl alcohol of maleinised polybutadiene, modified with phenol resin with addition of 25% aqueous ammonia and a mixture of isopropyl alcohol and water in ratio of 1:1 and acrylic copolymer with pH of the composition equal to 6.5-7.5. The method of applying a protective coating onto waveguide devices made from copper-zinc alloys having a complex shape involves preparing the surface, chemical cleaning, washing in hot water, washing in flowing cold water, etching, washing in flowing cold water, passivation, washing in flowing cold water. The lacquer film is deposited onto waveguide devices made from copper-zinc alloys having a complex shape by simple immersion of the said lacquer composition for 3-5 minutes at 15-28°C and then washing with flowing cold water, drying for not less than 0.5 hours at 110-120°C.

EFFECT: protective lacquer composition can form a corrosion-resistant coating on the surface of copper-zinc alloys.

2 cl, 3 ex

FIELD: chemistry.

SUBSTANCE: protective lacquer composition for devices made from aluminium alloys based on KC-0125 lacquer contains 68±2% solution in diacetone and isopropyl alcohol of maleinised polybutadiene, modified with phenol resin with addition of 25% aqueous ammonia and a mixture of isopropyl alcohol and water in ratio of 1:1 and acrylic copolymer with pH of the composition equal to 6.5-7.5. The method of applying a protective coating onto waveguide devices made from aluminium alloys having a complex shape is realised by preparing the surface by etching, washing in flowing hot water, washing in flowing cold water, clarification, washing in flowing cold water, chemical oxidation, washing in flowing cold water, removing condensed moisture, chemical cleaning and washing in flowing cold water. Said lacquer composition is then applied by simple immersion for 3-5 minutes at 15-35°C and washing in flowing cold water. The lacquer coating is deposited in a solution containing linoleic acid, oxalic acid, mixture of isopropyl alcohol and water in ratio of 1:1 and then washing in flowing cold water, removing condensed moisture and curing at 110-120°C for not less than 30 minutes.

EFFECT: obtaining a protective lacquer coating which can form a non-porous, corrosion-resistant coating on the surface of oxidised aluminium alloys with reduction of hardening temperature of the composition.

2 cl, 3 ex

FIELD: process engineering.

SUBSTANCE: this invention relates to the method of producing articles with electrically conducting coat of at least a part of their surface. Proposed invention aims at developing the method that can be realised quickly and simply at low temperature to produce coats with high conductivity. For this, composition consisting of finely divided electrically conducting metal particles and binder is applied at least partially, on composition substrate. Besides substrate with coat applied thereto is treated by water in the presence of halogen ion source at temperature range from room temperature to 200°C.

EFFECT: simple, fast and efficient method.

19 cl, 4 ex

FIELD: process engineering.

SUBSTANCE: invention relates to sheet material with orange peel coat that features good machinability and high Mohs' hardness. Proposed sheet coated material is characterised by the curve of filtered axial waviness (Wca) describing film outer surface in the range 0.35 mcm ≤ Wca ≤ 1.25 mcm and by mean distance between local peaks on the curve of filtered waviness (Wc-sm) in the range 2800 mcm ≤ Wc-sm ≤ 12500 mcm. Said sheet material features also an interface between film outer surface and its lower layer that has wavy structure. Preferably, proposed sheet material should satisfy the following conditions: waviness curve W revealed in analysis of interface between coat cross section outer layer and its lower layer comprises large waves in the range A ≤ 0.8 B, where A if the distance between coat outer surface S and the boundary of curvilinear waviness W, B makes mean thickness of outer layer film defined by mean distance between large waves that does not exceed 750 mcm.

EFFECT: higher efficiency, expanded applications, lower costs.

17 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: treated samples are placed in vacuum chamber. Vacuum chamber is filled with reaction gas, which contains at least one gas-monomer capable of plasma polymerisation. Plasma is generated by means of ignition and maintenance of double-staged glowing discharge in two spatially separated discharge volumes, and polymer coat is deposited onto surface of treated sample. The first discharge volume is separated from the second discharge volume with the help of perforated electrode, size of holes in which exceeds 0.1 mm. Treated sample is installed on electrode, which is placed in the second discharge volume opposite to perforated electrode. To electrode that serves as holder of treated sample, potential of shift is supplied versus perforated electrode. In the first discharge volume there might be various types of gas discharge used: inductive high-frequency discharge, capacitance high-frequency discharge, DC discharge. Discharge may be maintained in pulse form. In process of plasma polymerisation distance is adjusted between perforated electrode and electrode that serves as holder of treated sample.

EFFECT: independent control of polymer coat deposition speed, structure and properties of deposited coat with high efficiency of technological process.

14 cl, 1 dwg

FIELD: working of metals .

SUBSTANCE: device comprises power source, controlled frequency converter, step-up high-frequency resonance transformer with working needle electrode, and gas-dynamic unit with gas duct and nozzle for supplying the gas to the treatment zone. The output of the controlled frequency converter is connected with the high-voltage electrical gas discharging unit of plasma generators having the step-up high-frequency transformers. The low-voltage windings of the transformers are interconnected in parallel and are connected with the controlled frequency converter. The high-voltage windings are connected with the needle electrodes concentrating electromagnetic energy. The electrodes are axially aligned and are mounted inside the nozzle. The nozzles provide the ionized agent to be homogeneously distributed over the surface of the material mounted on the receiving drum that is actuated from the electric motor with the voltage control.

EFFECT: expanded functional capabilities.

5 cl, 4 dwg

The invention relates to the processing of plastics and can be used in chemical, paint, medical and other industries, which manufactured materials with the sticky surface layer and as an adhesive used organic substances, organic solvents

The invention relates to a device for material processing high-frequency electric discharge, and can be applied for processing of plastic films and synthetic fibers for the physical modification of their structure and surface

The invention relates to the production of razor blades, and more specifically to the production of razor blades with a coating of polymeric material deposited on the surface of their edges

The invention relates to dyeing and finishing production of the textile industry, and in particular to methods of printing fabrics made of cellulose fibers

FIELD: working of metals .

SUBSTANCE: device comprises power source, controlled frequency converter, step-up high-frequency resonance transformer with working needle electrode, and gas-dynamic unit with gas duct and nozzle for supplying the gas to the treatment zone. The output of the controlled frequency converter is connected with the high-voltage electrical gas discharging unit of plasma generators having the step-up high-frequency transformers. The low-voltage windings of the transformers are interconnected in parallel and are connected with the controlled frequency converter. The high-voltage windings are connected with the needle electrodes concentrating electromagnetic energy. The electrodes are axially aligned and are mounted inside the nozzle. The nozzles provide the ionized agent to be homogeneously distributed over the surface of the material mounted on the receiving drum that is actuated from the electric motor with the voltage control.

EFFECT: expanded functional capabilities.

5 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: treated samples are placed in vacuum chamber. Vacuum chamber is filled with reaction gas, which contains at least one gas-monomer capable of plasma polymerisation. Plasma is generated by means of ignition and maintenance of double-staged glowing discharge in two spatially separated discharge volumes, and polymer coat is deposited onto surface of treated sample. The first discharge volume is separated from the second discharge volume with the help of perforated electrode, size of holes in which exceeds 0.1 mm. Treated sample is installed on electrode, which is placed in the second discharge volume opposite to perforated electrode. To electrode that serves as holder of treated sample, potential of shift is supplied versus perforated electrode. In the first discharge volume there might be various types of gas discharge used: inductive high-frequency discharge, capacitance high-frequency discharge, DC discharge. Discharge may be maintained in pulse form. In process of plasma polymerisation distance is adjusted between perforated electrode and electrode that serves as holder of treated sample.

EFFECT: independent control of polymer coat deposition speed, structure and properties of deposited coat with high efficiency of technological process.

14 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to decoration of plastic surface, particularly, to applying patterns on plastic substrate. Proposed method comprises: applying layer of paint including magnetically oriented pigments on substrate; affecting said paint by magnetic field to orient pigments along force lines to produce pattern on paint layer, and curing paint on substrate. Note here that magnetic field is generated by one magnetic part implanted in plastic substrate being coated.

EFFECT: higher quality of patterns, higher process efficiency.

8 cl

FIELD: process engineering.

SUBSTANCE: invention relates to printing and can be used for imaging with the help of ink containing colour-changing metal or magnetic plates. Method of leveling multiple directed nonspherical plates supported by lengthwise tape with coating containing nonspherical plates oriented in magnetic field. First and second magnets are arranged at first side of tape feed and second magnet is arranged between first and third magnets on second side of tape feed path. First and third magnets feature identical polarity. Second magnet features polarity unlike that of said first and third magnets. First magnetic field surrounding the feed path exists between first and second magnets. Second magnetic field surrounding the feed path exists between second and third magnets. Magnets are arranged so that multiple nonspherical plates directed by magnetic field and moved along tape feed path make first turn on passing by second magnet during relative displacement of tape and magnets. Proposed method comprises relative displacement of at least tape supporting the plates, or magnets that make two pairs of complementary tractive magnets. Multiple plates oriented in magnetic field can perform multiple turns.

EFFECT: higher light reflectance, better chromatic properties of printed articles.

14 cl, 11 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to device metal strip heating in direct-fired furnace. Device for induction preheating of metal strip is arranged ahead of direct-fired furnace in direction of metal strip feed. Air feed means are located ahead of aforesaid device for airing said strip.

EFFECT: higher quality and yield of finished products.

19 cl, 1 dwg

Up!