WO2021207811A1 - Método de tratamento da superfície de folhas metálicas com verniz de proteção de cura uv - Google Patents
Método de tratamento da superfície de folhas metálicas com verniz de proteção de cura uv Download PDFInfo
- Publication number
- WO2021207811A1 WO2021207811A1 PCT/BR2021/050147 BR2021050147W WO2021207811A1 WO 2021207811 A1 WO2021207811 A1 WO 2021207811A1 BR 2021050147 W BR2021050147 W BR 2021050147W WO 2021207811 A1 WO2021207811 A1 WO 2021207811A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- varnish
- plasma
- sheet
- atmospheric plasma
- metallic
- Prior art date
Links
- 239000002966 varnish Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 title claims abstract description 25
- 239000011888 foil Substances 0.000 title claims abstract description 9
- 230000001681 protective effect Effects 0.000 title claims description 5
- 239000007787 solid Substances 0.000 claims abstract description 14
- 230000005855 radiation Effects 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 239000000178 monomer Substances 0.000 claims abstract description 3
- 230000003993 interaction Effects 0.000 claims description 12
- 239000007789 gas Substances 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000001723 curing Methods 0.000 claims description 8
- 238000003848 UV Light-Curing Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 230000010287 polarization Effects 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 description 11
- 239000002904 solvent Substances 0.000 description 11
- 239000000758 substrate Substances 0.000 description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 7
- 239000010410 layer Substances 0.000 description 7
- 229910052804 chromium Inorganic materials 0.000 description 6
- 239000011651 chromium Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 238000001029 thermal curing Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- -1 aromatics Chemical class 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000001033 granulometry Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/16—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies using synthetic lacquers or varnishes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
- B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
- B05D3/065—After-treatment
- B05D3/067—Curing or cross-linking the coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
- B05D3/141—Plasma treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/14—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by electrical means
- B05D3/141—Plasma treatment
- B05D3/142—Pretreatment
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
- B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
- B05D2401/31—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as mixtures of monomers and polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2501/00—Varnish or unspecified clear coat
Definitions
- the present invention concerns a method to provide the surface treatment of metallic sheets, coated or not with chromium and tin, particularly of metallic sheets used in the metal packaging industry, through the application of atmospheric plasma, allowing that a protective varnish, curable by ultraviolet radiation, is applied, with good adhesion and high wettability, on one or both sides of the metallic sheet used in the formation of the bodies and components of these packages, which generally take the form of cans of two, three or more pieces.
- the metal packaging industry uses, as a basic substrate for its products, steel sheets formed with high iron content and low carbon and that need protection against moisture, to avoid oxidation capable of leading to loss of packaging and product packaged in it.
- the steel industry which supplies steel sheet coils for the formation of metal packaging, generally applies to said metal sheet an electrolytic deposition process, to form an intermetallic surface layer of tin or chromium, the metal sheet being subjected to a heat treatment to consolidate the crystallography/granulometry and the porosity of the chromium or free tin layer.
- the varnishes currently used for the protection of metallic packaging have, in their chemical composition, about 50% solvents. This specific characteristic means that at least half of its content is lost in the thermal curing process, with the solvent turning into highly toxic vapor, which is necessarily incinerated before reaching the atmosphere.
- the solvent is the standard means that allows obtaining the required and correct degree of spreading of the varnish on the metallic sheet, entering the grooves of the metallic substrate and taking the varnish solids all the way to the surface of the metallic sheet, to which they adhere easily.
- the current process has flexibility, good spreading, elongation and adhesion properties, in addition to minimizing the effects of residual grease or dirt on the metal surface, dissolving or dispersing these contaminants.
- these current process varnishes use solvents that have a high percentage of volatile organic compounds, which are evaporated when curing or drying the varnish by applying heat and forced convection in large equipment, consuming high energy and processing time.
- Volatile compounds, solvent-based varnishes can be defined by a single compound or, for example, by a mixture of ethers, acetates, aromatics, glycol ethers and aliphatic hydrocarbons, requiring the use of costly incineration systems so that they are not released into the atmosphere, which could cause great harm to the environment.
- varnishes free of volatile compounds that is, varnishes that, after the curing process, have about 99% to 100% of their components solidified on the sheet, forming a single polymer, for example, as proposed in the method object of the present invention, it is not possible without, in some way, changing the surface free energy of the metallic sheet to a value compatible with the surface tension of the liquid varnish to be applied.
- the compatibility of the surface tension values of the liquid state varnish with the free energy of the solid surface of the metal sheet is necessary to prevent the appearance of spherical droplets, leading to a high concentration of the varnish at certain points on the surface of the metal sheet and a reduced layer or even no layer applied at other points.
- the free energy of a solid is closely linked to its wettability, that is, its ability to form a common interface with the liquid that comes in contact with it.
- the compatibility of values of free energy and surface tension allow for a homogeneous spread and a desired and safe adhesion of the varnish to the surface of the metallic sheet.
- the present invention aims to provide a method that allows the application of varnishes of protection, cured by ultraviolet radiation, in metallic sheets, without coating or coated with chromium or tin, used in the metal packaging industry, for internal and external protection of can bodies and components.
- the method in question allows the replacement of solvent-based and thermal curing varnishes, which require large ovens that use gas for heat generation and high volume of organic steam, highly harmful to humans and the environment, by cured varnishes by ultraviolet light, compatible with the environment.
- the method consists of treating the surface of the metallic substrate, cleaning and activating it through atmospheric plasma, raising the free energy of the metallic substrate to a value equal to or greater than the surface tension value of the UV-curing varnish, to be applied to said substrate, increasing about 8 times the polar part of said energy free, which has a hydrophilic characteristic, thus improving the adhesion properties and the wettability of the metallic sheet and allowing a correct spread of the varnish and a high adhesion power to the metallic substrate.
- Figure 1 represents, in a schematic and simplified way, the steps of the treatment method in question when applied in the surface protection of metal sheets.
- the method in question aims to provide a protective surface treatment on one or both sides of metallic sheets 10, by applying a protective varnish, curable by ultraviolet radiation.
- the metallic sheet 10, subjected to the method in question can be coated or not with chromium or tin, being particularly used in the metal packaging industry in the form of cans formed with two or three pieces.
- the metallic sheet 10 has any of its faces subjected to contact with an ionized gas called atmospheric plasma PA, considered the fourth state of matter and which is released, against the surface to be treated, to from a plasma nozzle 20.
- Atmospheric plasma PA is produced by a controlled discharge of electrical energy made by a high frequency and high voltage plasma generator 21 within the plasma nozzle 20 which is further powered by compressed air from a compressed air generator 22, being illustrated in figure 1 of the attached drawing only a high frequency and high voltage plasma generator 21, a compressed air generator 22 and a plasma nozzle 20 generating atmospheric plasma PA that falls on the surface of a metal sheet 10, it being understood that the number of plasma nozzles 20 and plasma generators 21 may vary according to the transverse dimension of the metal sheets 10, the relative displacement speed between the metal sheet 10 and the nozzles of plasma 20 and the intensity of the latter.
- FIG 1 of the drawing an exemplary way of moving a metallic sheet 10 by means of conveyor belts 30 with its passing course is illustrated.
- Under the atmospheric plasma PA at a linear velocity determined due to the other parameters mentioned above and related to the type of metallic sheet 10 and the power of the plasma nozzles 20, considering that they are in adequate number and arrangement for the necessary coverage of the sheet width metallic 10 passing under the atmospheric plasma PA.
- the surface free energy of the metallic sheet 10 used, before exposure to atmospheric plasma, is on average from 28 to 45 mN/m, with the polar part, considered hydrophilic, low, with averages of 1 to 3, for sheets tinned, and 4 to 5 for chromed sheets, depending on their manufacture, machining, free tin or free chromium layer and passivation.
- the cohesion between atoms and molecules which causes the energy/surface tension of a substance, can be explained by different types of interaction. In particular, one can differentiate between dispersive interactions and polar interactions. Interactions, caused by temporary fluctuations in the charge distribution on atoms/molecules, are called dispersive interactions (van der Waals interaction).
- Polar interactions comprise Coulomb interactions between permanent dipoles and between permanent and induced dipoles (eg hydrogen bonds). Since van der Waals interactions occur between all atoms and molecules, there is no substance with surface tension/energy that only consists of a polar part.
- the energy/surface tension Oi of an i component is additively composed of dispersed Oi d and polar Oi P parts according to:
- the substrate After exposure of the metallic substrate (steel sheet) to atmospheric plasma PA, with the plasma nozzle 20 positioned 1 to 3 mm away from the steel sheet, using high frequency, high voltage plasma 21 generators , with a flow of 50 to 60 liters of nitrogen per minute and at a pressure of 245 mbar (24.5 KPa) at the exit of the jet, the substrate, in the form of a metallic sheet 10, in displacement at a speed of 40 to 80 m/min, its free surface energy is increased to parameters that can be adjusted to the compatibility of the surface tension of the varnish to be applied, and this free surface energy in the treated sheet can be defined from 29 to 72 mN/m, with a high polar part , both on tin- and chrome-coated sheets.
- the plasma generator 21, of high frequency and high power must be configured to generate 300 to 400 Volts, with the pulse frequency between 20 and 30 kHz, to reach a power between 900 and 1000 W.
- the gas to to be compressed can be oxygen or nitrogen, the latter being N2, the most effective.
- the amount of gas released must be, in both cases, 50 to 60 liters per minute, with a pressure of 240 to 250 mbar (24.5 to 25.0 KPa) at the jet outlet.
- This pre-treatment arrangement produces the cleaning of organic matter, the polarization of the metallic surface under treatment and the increase in the surface free energy of the steel sheet 10, making this surface free energy compatible with the surface tension of the UV curing varnish to be applied to the metallic sheet 10, allowing excellent adhesion and spreading of the varnish over the sheet, at a speed greater than 3500 sheets of steel per hour (tinned or chromed sheets), considering atmospheric plasma PA produced from Nitrogen or compressed Oxygen, using 56 liters of gas per minute, at a pressure at the jet outlet of 245 mbar (24.5 KPa) and at a leaf speed in the order of 50 m/min.
- the metallic sheet 10, surface treated by atmospheric plasma PA, is transported by the mats 30 to a varnish applicator 40, which can be, for example, defined by a varnish roller 41 feeding an applicator roller 42 working in opposition to a backing roller 43.
- a varnish applicator 40 which can be, for example, defined by a varnish roller 41 feeding an applicator roller 42 working in opposition to a backing roller 43.
- the foil 10 receives, on the face in contact with the applicator roller 42, a layer of UV-curable CV varnish.
- the foil 10 enters a unit of cure 50, formed, for example, by mercury vapor lamps or Led, which generate sufficient ultraviolet radiation to activate the photoinitiators of the chemical composition of the varnish, producing its polymerization, its adhesion to the surface of the metallic sheet and a total coverage and protection of the said surface of the metallic sheet to be used in the production of bodies, domes and bottoms of metallic packaging.
- a unit of cure 50 formed, for example, by mercury vapor lamps or Led, which generate sufficient ultraviolet radiation to activate the photoinitiators of the chemical composition of the varnish, producing its polymerization, its adhesion to the surface of the metallic sheet and a total coverage and protection of the said surface of the metallic sheet to be used in the production of bodies, domes and bottoms of metallic packaging.
- the varnishes used in this process are composed of oligomers, monomers and photo-initiators, applied by lithographic roller 42, without the need for dilution, with viscosity from 40 to 60 Sec CF4/25°C, specific weight from 1.01 to 1.05/25°C with solids content of 99 to 100%.
- the method in question allows the use of the protection product, varnish, both on the inside and outside of the bodies and components, dome and bottom, of metallic packaging composed of three or two pieces, with 99% radiation-cured solids UV lamps and the replacement of a gas oven with a curing station with UV lamps.
- the varnish curing occurs by polymerization of the varnish caused by the interaction of the photoinitiator of the varnish composition with ultraviolet radiation, above 100 mJ/cm2, emitted by the lamps of the curing unit 50, the final dry layer will be from 4.65 to 7.75 g/m 2 .
Landscapes
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PE2022002239A PE20230331A1 (es) | 2020-04-13 | 2021-04-12 | Metodo de tratamiento de superficies de laminas metalicas con barniz protector de curado uv |
KR1020227039615A KR20230011300A (ko) | 2020-04-13 | 2021-04-12 | Uv 경화형 보호용 바니시를 사용하여 금속 포일의 표면을 처리하는 방법 |
US17/918,470 US20230147245A1 (en) | 2020-04-13 | 2021-04-12 | Method for treating the surface of metal foils with uv-cured protective varnish |
JP2023504688A JP2023521256A (ja) | 2020-04-13 | 2021-04-12 | 紫外線硬化した保護ワニスによる金属箔の表面の処理方法 |
AU2021257402A AU2021257402B2 (en) | 2020-04-13 | 2021-04-12 | Method for treating the surface of metal foils with UV-cured protective varnish |
MX2022012810A MX2022012810A (es) | 2020-04-13 | 2021-04-12 | Metodo de tratamiento de superficies de laminas metalicas con barniz protector de curado uv. |
CN202180034234.6A CN115803123A (zh) | 2020-04-13 | 2021-04-12 | 用紫外线固化的保护性清漆处理金属箔表面的方法 |
EP21788732.2A EP4137239A4 (en) | 2020-04-13 | 2021-04-12 | PROCESS FOR SURFACE TREATMENT OF METAL FOILS WITH UV-CURED PROTECTIVE COATING |
IL297196A IL297196A (en) | 2020-04-13 | 2021-04-12 | A method for treating the surface of metal sheets with a uv-treated protective varnish |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR102020007308A BR102020007308A2 (pt) | 2020-04-13 | 2020-04-13 | Método de tratamento da superfície de folhas metálicas com verniz de proteção de cura uv |
BRBR1020200073087 | 2020-04-13 | ||
BRBR1020210067616 | 2021-04-08 | ||
BR102021006761-6A BR102021006761A2 (pt) | 2020-04-13 | 2021-04-08 | Método de tratamento da superfície de folhas metálicas com verniz de proteção de cura uv |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021207811A1 true WO2021207811A1 (pt) | 2021-10-21 |
Family
ID=78083478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2021/050147 WO2021207811A1 (pt) | 2020-04-13 | 2021-04-12 | Método de tratamento da superfície de folhas metálicas com verniz de proteção de cura uv |
Country Status (10)
Country | Link |
---|---|
US (1) | US20230147245A1 (pt) |
EP (1) | EP4137239A4 (pt) |
JP (1) | JP2023521256A (pt) |
KR (1) | KR20230011300A (pt) |
CN (1) | CN115803123A (pt) |
AU (1) | AU2021257402B2 (pt) |
IL (1) | IL297196A (pt) |
MX (1) | MX2022012810A (pt) |
PE (1) | PE20230331A1 (pt) |
WO (1) | WO2021207811A1 (pt) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7407316B2 (ja) | 2022-05-10 | 2023-12-28 | ルバテル・エ・ワイエルマン・エス アー | イオン衝撃による部品の表面状態の改質方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000024527A1 (de) * | 1998-10-28 | 2000-05-04 | Ciba Specialty Chemicals Holding Inc. | Verfahren zur herstellung haftfester oberflächenbeschichtungen |
JP2000273399A (ja) * | 1999-03-19 | 2000-10-03 | Kansai Paint Co Ltd | 紫外線硬化型被膜形成組成物 |
JP2002212509A (ja) * | 2001-01-22 | 2002-07-31 | Toyo Ink Mfg Co Ltd | アルミニウム含有紫外線硬化型塗料組成物及び被塗物 |
BRPI0517257A (pt) * | 2004-10-29 | 2008-10-07 | Alcoa Inc | metal revestido com um revestimento durável externo curável com radiação |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2755189B2 (de) * | 1977-12-10 | 1980-11-27 | Detmolder Lackfabrik Niesen & Soehngen, 4930 Detmold | Verfahren zur Ausbildung geschlossener und festhaftender Lackschichten aus UV- oder ESH- Lacken auf inhomogenen, insbesondere teilweise bedruckten Substratoberflächen |
US5128387A (en) * | 1987-07-28 | 1992-07-07 | Borden, Inc. | Extensible and pasteurizable radiation curable coating for metal |
ATE135638T1 (de) * | 1991-07-30 | 1996-04-15 | Ferchim Eng Sa | Verfahren zur herstellung von gegenständen mit oberflächlichen relief-mustern |
DE10011275A1 (de) * | 2000-03-08 | 2001-09-13 | Wolff Walsrode Ag | Verfahren zur Oberflächenaktivierung bahnförmiger Werkstoffe |
ATE359873T1 (de) * | 2003-05-23 | 2007-05-15 | Ciba Sc Holding Ag | Stark haftende oberflächenbeschichtungen |
DE102006044957A1 (de) * | 2006-04-01 | 2007-10-04 | Man Roland Druckmaschinen Ag | Prägebeschichtung für steif-elastische Bedruckstoffe |
GB0717430D0 (en) * | 2007-09-10 | 2007-10-24 | Dow Corning Ireland Ltd | Atmospheric pressure plasma |
JP2011200763A (ja) * | 2010-03-24 | 2011-10-13 | Nisshin Steel Co Ltd | 活性エネルギー線硬化型インクジェットインキによって、樹脂皮膜でマスクされた金属板を製造する方法 |
US9941099B2 (en) * | 2014-09-02 | 2018-04-10 | Nike, Inc. | Plasma treatment of an elastomeric material for adhesion |
KR101674766B1 (ko) * | 2014-12-23 | 2016-11-10 | 주식회사 포스코 | 투명 패턴 프린트 강판 제조 방법 |
EP3235575A1 (en) * | 2016-04-22 | 2017-10-25 | Schaeffer AG | A method for applying a primer, in particular a primer for uv coating systems, on the surface of an electrically conductive substrate |
KR102097744B1 (ko) * | 2018-06-15 | 2020-04-06 | 씨제이첨단소재 주식회사 | 전자부품의 절연코팅장치 및 이를 이용한 전자부품의 절연코팅방법 |
DE102019101997A1 (de) * | 2019-01-28 | 2020-07-30 | Koenig & Bauer Ag | Verfahren und Druckmaschine jeweils zum Bedrucken eines metallischen Bedruckstoffes |
-
2021
- 2021-04-12 IL IL297196A patent/IL297196A/en unknown
- 2021-04-12 MX MX2022012810A patent/MX2022012810A/es unknown
- 2021-04-12 PE PE2022002239A patent/PE20230331A1/es unknown
- 2021-04-12 EP EP21788732.2A patent/EP4137239A4/en active Pending
- 2021-04-12 WO PCT/BR2021/050147 patent/WO2021207811A1/pt unknown
- 2021-04-12 KR KR1020227039615A patent/KR20230011300A/ko active Search and Examination
- 2021-04-12 JP JP2023504688A patent/JP2023521256A/ja active Pending
- 2021-04-12 CN CN202180034234.6A patent/CN115803123A/zh active Pending
- 2021-04-12 US US17/918,470 patent/US20230147245A1/en active Pending
- 2021-04-12 AU AU2021257402A patent/AU2021257402B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000024527A1 (de) * | 1998-10-28 | 2000-05-04 | Ciba Specialty Chemicals Holding Inc. | Verfahren zur herstellung haftfester oberflächenbeschichtungen |
JP2000273399A (ja) * | 1999-03-19 | 2000-10-03 | Kansai Paint Co Ltd | 紫外線硬化型被膜形成組成物 |
JP2002212509A (ja) * | 2001-01-22 | 2002-07-31 | Toyo Ink Mfg Co Ltd | アルミニウム含有紫外線硬化型塗料組成物及び被塗物 |
BRPI0517257A (pt) * | 2004-10-29 | 2008-10-07 | Alcoa Inc | metal revestido com um revestimento durável externo curável com radiação |
Non-Patent Citations (2)
Title |
---|
LOPES B. B: "Plasma: agente promotor de adesão em polímeros e sua facilidade de inserção em processos produtivos", vol. XLVIII, 4 March 2015 (2015-03-04), Brazil, pages 31 - 35, XP009531682, ISSN: 0102-1931 * |
See also references of EP4137239A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7407316B2 (ja) | 2022-05-10 | 2023-12-28 | ルバテル・エ・ワイエルマン・エス アー | イオン衝撃による部品の表面状態の改質方法 |
Also Published As
Publication number | Publication date |
---|---|
MX2022012810A (es) | 2023-01-24 |
AU2021257402A1 (en) | 2022-11-10 |
KR20230011300A (ko) | 2023-01-20 |
EP4137239A9 (en) | 2023-06-28 |
PE20230331A1 (es) | 2023-03-01 |
CN115803123A (zh) | 2023-03-14 |
JP2023521256A (ja) | 2023-05-23 |
AU2021257402B2 (en) | 2024-04-04 |
EP4137239A4 (en) | 2024-05-08 |
EP4137239A1 (en) | 2023-02-22 |
US20230147245A1 (en) | 2023-05-11 |
IL297196A (en) | 2022-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1925043B1 (en) | Encapsulated devices and method of making | |
WO2021207811A1 (pt) | Método de tratamento da superfície de folhas metálicas com verniz de proteção de cura uv | |
US6627267B2 (en) | Plasma enhanced chemical deposition with low vapor pressure compounds | |
CN1083301C (zh) | 经真空闪蒸蒸发的聚合物复合材料 | |
US7105206B1 (en) | Light curing of radiation curable materials under protective gas | |
US7989034B2 (en) | Method for continuous atmospheric pressure plasma treatment of workpieces | |
Alongi et al. | UV-cured hybrid organic–inorganic layer by layer assemblies: effect on the flame retardancy of polycarbonate films | |
US20070245916A1 (en) | Corrugated sheet fed printing process with UV curable inks | |
BR9914847A (pt) | Processo para a preparação revestimentos de superfìcies de adesão firme | |
BR0108155A (pt) | Processo para produção de revestimentos de superfìcie fortemente aderentes por enxerto ativado por plasma | |
WO2003100814A1 (en) | Particle beam processing apparatus and materials treatable using the apparatus | |
BR102021006761A2 (pt) | Método de tratamento da superfície de folhas metálicas com verniz de proteção de cura uv | |
Yedra et al. | Conductive paints development through nanotechnology | |
TW201345597A (zh) | 溶劑回收方法及塗佈乾燥設備 | |
Förster | Atmospheric pressure plasma in industrial applications: Surface treatment of thermally sensitive polymers | |
KR20130138882A (ko) | 탄소나노튜브 코팅막 및 상기 탄소나노튜브 코팅막을 형성하는 탄소나노튜브 용액 조성물 | |
Schuman et al. | Effects of a DBD plasma discharge on bond strength | |
DK2428359T3 (en) | Printer and method of printing on flat materials. | |
JPH09302264A (ja) | 食品包装材料における表面保護層の形成方法 | |
JPH06278271A (ja) | 水性又は水性化インキ用印刷機の複合乾燥装置及びそれを用いた印刷機 | |
EP2572861B1 (en) | Process of atmospheric plasma multistep grafting of polymer films | |
BR112023000555A2 (pt) | Película laminada e material de embalagem | |
JP7190346B2 (ja) | 印刷装置及び印刷方法 | |
JPH0568936A (ja) | 剥離用シートおよびその製造方法 | |
US20210245541A1 (en) | Printing apparatus and method for manufacturing printed matter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21788732 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2023504688 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2021257402 Country of ref document: AU Date of ref document: 20210412 Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2021788732 Country of ref document: EP Effective date: 20221114 |