EP3661659A1 - Vorrichtung und verfahren zum einseitigen und/oder beidseitigen beschichten eines metallischen bandsubstrats - Google Patents
Vorrichtung und verfahren zum einseitigen und/oder beidseitigen beschichten eines metallischen bandsubstratsInfo
- Publication number
- EP3661659A1 EP3661659A1 EP18742435.3A EP18742435A EP3661659A1 EP 3661659 A1 EP3661659 A1 EP 3661659A1 EP 18742435 A EP18742435 A EP 18742435A EP 3661659 A1 EP3661659 A1 EP 3661659A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- tape substrate
- substrate
- coating device
- path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 240
- 239000011248 coating agent Substances 0.000 title claims abstract description 234
- 239000000758 substrate Substances 0.000 title claims abstract description 159
- 238000000034 method Methods 0.000 title claims description 19
- 239000002184 metal Substances 0.000 title abstract description 3
- 239000000843 powder Substances 0.000 claims abstract description 43
- 230000000087 stabilizing effect Effects 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 239000003973 paint Substances 0.000 description 4
- 238000009503 electrostatic coating Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000004876 x-ray fluorescence Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007786 electrostatic charging Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/02—Apparatus specially adapted for applying particulate materials to surfaces using fluidised-bed techniques
- B05C19/025—Combined with electrostatic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/057—Arrangements for discharging liquids or other fluent material without using a gun or nozzle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/08—Plant for applying liquids or other fluent materials to objects
- B05B5/081—Plant for applying liquids or other fluent materials to objects specially adapted for treating particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/08—Plant for applying liquids or other fluent materials to objects
- B05B5/14—Plant for applying liquids or other fluent materials to objects specially adapted for coating continuously moving elongated bodies, e.g. wires, strips, pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/18—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material only one side of the work coming into contact with the liquid or other fluent material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
-
- 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
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
-
- 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
- B05D3/02—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 baking
- B05D3/0254—After-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
- 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
-
- 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
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
-
- 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
- B05D2252/00—Sheets
- B05D2252/02—Sheets of indefinite length
-
- 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
- B05D3/02—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 baking
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
Definitions
- the invention relates to a device for one-sided and / or double-sided coating of a metallic tape substrate, comprising at least one guide means for guiding the tape substrate during the coating along a predetermined trajectory and at least a first coating means for coating a first major side of the tape substrate with a fluidized in a first container stored, electrostatically charged coating powder, wherein the first container is disposed at least partially geodetically below a first path portion of the movement path.
- the invention relates to a method for one-sided and / or double-sided coating of a metallic tape substrate, wherein the tape substrate is guided during the coating along a predetermined trajectory and a first main side of the tape substrate with a first coating device, at least partially geodetic below a first Track portion of the trajectory is arranged, fluidized stockpiled, electrostatically charged coating powder is coated.
- a metallic tape substrate for product refinement or for producing desired product properties with a coating.
- a metallic tape substrate can be coated on one or both sides.
- published patent application DE 2 231 685 A1 relates to a method of coating a metallic strip material by: wetting a first surface of the strip material; Passing the moistened first surface with a constant over the entire width of the strip material predetermined distance at a first electrostatic device, which is charged with a metal powder, so that the moistened first surface is electrostatically provided with a coating of the metallic coating powder; Moistening a second surface located on the opposite side of the strip material; Passing the wetted second surface at a predetermined constant distance over the entire width to a second electrostatic device charged with a metallic coating powder such that the moistened second surface is electrostatically provided with a coating of the metallic coating powder; and drying the wet coatings on the first and second surfaces and achieving a firm adherence of the dry coatings to the surfaces.
- the last mentioned predetermined constant distance is maintained by passing the wet coating on the first surface of the strip material over at least one smooth-surfaced support roll disposed adjacent the second electrostatic device.
- An object of the invention is to provide a high-quality, material-saving and continuous coating of a metallic tape substrate.
- a device according to the invention for coating a metallic strip substrate on one and / or two sides comprises at least one guide device for guiding the strip substrate during the coating along a predetermined path of movement and at least one first coating device for coating a first main side of the strip substrate with an electrostatically stored fluid in a first container charged coating powder, wherein the first container is disposed at least partially geodetically below a first path portion of the movement path. Furthermore, the device according to the invention comprises at least one second coating device for coating a second main side of the belt substrate with an electrostatically charged coating powder stored in a second container, wherein the second coating device is connected downstream of the movement path of the first coating device with respect to a running direction of the belt substrate.
- the device according to the invention comprises at least one deflecting unit connected with respect to the movement path between the first coating device and the second coating device for deflecting the tape substrate, the first web section merging via the deflecting unit into a second web section of the movement path, wherein the deflecting unit deflects the tape substrate in such a way that Tape substrate in the second web portion opposite to the tape substrate in the first web portion runs, and wherein the second container is disposed at least partially geodetically below the second web portion.
- the first and / or the second coating device can be used for the coating of the tape substrate. Accordingly, the tape substrate can be coated on one side and / or on both sides by means of the device according to the invention.
- Each coating device may perform an electrostatic coating of the tape substrate when the respective coating device is activated.
- Each coating device can be designed in accordance with the electrostatic fluidizing device according to DE 10 2004 010 177 A1, with which a coating with a very constant coating thickness can be applied to the tape substrate.
- the first container and the second container can then be designed according to the fluidizing container according to DE 10 2004 010 177 A1.
- At least one air feed for introducing fluidizing air into the container can open into each container.
- a fluidizing bottom can be arranged within the respective container, through which the fluidizing air can be supplied to a volume located above the fluidizing floor and within the container for fluidizing the coating powder.
- electrodes for example high-voltage electrodes in the form of thin wire electrodes, for ionizing the fluidizing air can be arranged in the volume and inside the container.
- a fluidizing bed of electrostatically charged, fluidized coating powder can be formed in each container.
- this makes it necessary to arrange the respective container such that the fluidized coating powder does not flow out of the container. Therefore, a coating of the tape substrate with the coating powder can be carried out with the respective coating device only if the coating device or at least the container containing the fluidized coating powder is arranged partially or completely geodetically below the tape substrate, since so the fluidized coating powder does not have a on the Tape substrate side facing the container arranged container opening can flow out of the container.
- the tape substrate In order to be able to coat the second main side of the tape substrate with the coating powder, the tape substrate must be deflected with the deflection unit in such a way that the second main side is geodesic lies below the first major side of the tape substrate. In this state, the tape substrate can then be guided past the second coating means whose (second) container is arranged partially or completely geodetically below the tape substrate running in the second web section.
- the invention makes it possible to coat a metallic strip substrate in the region of a continuously operating strip line (strip coil) by means of the device according to the invention.
- the invention makes possible the use of the electrostatic powder coating technology after the fluidized bed process has been carried out in the field of belt substrate finishing in belt plants.
- the use of a fluidized bed process in the field of direct and continuous coating of metallic tape substrates is not known from the prior art.
- the invention meets technological demands on the belt speed, the coating thickness range, the product quality and the coating direction.
- the device according to the invention is particularly applicable on both sides in one operation without Be Anlagenungspulverumgriff to the respective to be coated main side of the tape substrate respectively opposite, not to be coated main side of the tape substrate.
- the invention is without tape-contacting devices, which could damage the thermally not yet fixed powder coating. Furthermore, a coating of the metallic tape substrate with a low loss rate of the coating powder can be realized with the device according to the invention.
- the device according to the invention can be used within a coating section of a continuous strip coater.
- the apparatus of the present invention allows the use of the advantageous electrostatic powder coating technology via a fluidized bed process to generally enable powder coating technology in this technical field of continuous belt equipment and / or economically and environmentally more detrimental wet paint coatings and their use as solvents substitute.
- the device according to the invention thus provides the basic prerequisites for incorporation and operation of the fluidising bed process in a continuous strip coating plant.
- the device according to the invention can incorporate the electrostatic powder coating technology into today's environment of existing wet-paint system configurations, either as a technology extension or as a substitution of the wet coating or as an application of both technologies in the mixing operation.
- disadvantageous powder coating technologies such as the use of powder coating gun applications, can be substituted.
- the guide means for guiding the tape substrate during the coating along the predetermined trajectory may be formed such that the tape substrate in the first web portion and / or the second web portion is horizontal and at a constant, predetermined distance from the respective coating means or with a tape sag above the coating means can be performed.
- the tape sag can be used as a further process engineering degree of freedom for the predetermined formation of a field strength of an electric field between the respective coating means or the fluid bed formed thereby and the tape substrate, wherein the field strength continuously changes over the fluid bed, due to the coating process and the Coating result affects.
- the coating devices may be units that are mechanically and functionally interchangeable with each other. Alternatively, the coating devices may differ in height, width and / or depth from each other by their respective structural design.
- That the tape substrate in the second web portion runs opposite to the tape substrate in the first web portion means that the running direction or at least a horizontal component of the running direction of the tape substrate in the first web portion opposite to the running direction or at least a horizontal component of the running direction of the tape substrate in the second track section is.
- the metallic tape substrate may have a width, for example, in a range of 500 mm to 3000 mm and / or a thickness, for example, in a range of 0.2 mm to 4 mm.
- the tape substrate can be guided via the guide device at a tape speed, for example in a range of 5 m / min to 180 m / min.
- the positioning of the respective coating device relative to the respective main side of the tape substrate can be effected by a recording or arrangement of the coating device in or on a positioning frame or a positioning unit of the device.
- the positioning frame can be arranged movably via a multi-axis articulation, preferably via a three-axis articulation.
- the positioning of the respective coating device can be varied by tilting, rotating and / or lifting the coating device.
- Positioning drives for example motor-driven screw jacks or rack gears, can be used to move the positioning frame. Due to this mobility of the positioning frame and thus the coating device arranged thereon, optimal regulation of the Coating uniformity and thickness by two rotational directions of movement (x and y coordinate) and a translational movement direction (z coordinate) of the coating device can be realized.
- the positioning frames assigned to the coating devices can also be designed to be identical in the case of different types of coating devices.
- the tape substrate has tape substrate sections, which are each connected to each other via a stitching stitch (stitch).
- the stitching seam represents a disturbance variable, which is why the respective coating device or the fluid bed must be removed from the tape substrate for the passage of the stitching seam. For band loss minimization, this movement of the fluid bed must be carried out very quickly. This is possible with the positioning drives.
- the distance (z-coordinate) between the tape substrate and the respective coating device can be changed by changing the tensile stress in the tape substrate and thus deliberate predetermination of the tape sag contour above the coating device.
- the distance of the tape substrate to the respective coating device in the z-, x- and / or y-direction can be changed by positioning drives at all bearing points of components of the guide device, which are in a guide contact with the tape substrate.
- the deflection unit comprises two deflection rollers. This allows a distance between the first track section and the second web portion are increased in comparison to the use of a single diverting pulley to provide sufficient space for the second coating means between the two path portions of the trajectory.
- the deflection unit may have a single deflection roller, the outer diameter of which is preferably chosen to be so large that sufficient installation space for the second coating means can be provided between the two track sections.
- the deflection can have three or more pulleys.
- a further advantageous embodiment provides that at least one deflection roller has an electrically grounded roller shell.
- the tape substrate is thus placed on a ground potential via an electrically conductive surface contact with the deflection roller.
- electrostatic forces act between the tape substrate and the coating powder, causing the coating powder to move to and electrostatically adhere to the tape substrate. It can also have all pulleys of the deflection each having an electrically grounded roller shell.
- At least one stabilizing role is preceded by at least one coating means.
- the stabilizing roller can be arranged at least partially geodetically below the respective track section. With the stabilizing roller, a tape slack of the tape substrate before the respective coating can be reduced. In addition, with the stabilizing roller, movement distortions of the tape substrate in the running direction before the respective electrostatic coating can be calmed or reduced. For this purpose, the stabilizing roller is in contact with the tape substrate and can thereby support the tape substrate from below, for example. A distance between the stabilizing roller and the coating device in the direction of belt travel can be for example, be less than 20,000 mm.
- At least one stabilizing roller is arranged upstream of the path of movement of the belt substrate along the movement path of each coating device.
- at least one coating device is movably arranged between a functional position and a rest position. To achieve a minimum operating and change costs, the coating device with its respective associated positioning frame described above, driven manually or by motor, moved out together via a rail-guided Verfahrgesteil by the operator from or to the conveyor system or retracted.
- the length of the travel path of the coating device or of the positioning frame can be such from the functional position to the rest position that in the functional position a surface of the coating device projected in the z direction symmetrically covers the width of the belt substrate and in the rest position this projected surface is completely outside of the plant safety area and completely located in the working area of the operator.
- the direction of travel can be laterally, for example at an angle of 90 °, to the tape substrate running direction.
- the positioning time of the positioning drives for moving the respective coating device in the z-direction from the functional position or coating position to the rest position, and vice versa may be, for example, one second.
- the device has at least one measuring device for the contactless measurement of the coating thickness generated with the respective coating device, the measuring device being connected downstream of the respective coating device.
- the measuring device can be kept in a stationary measuring position relative to the bandwidth of the tape substrate.
- the measuring device as over the bandwidth of the tape substrate traversing measuring device for be formed dynamic acquisition of coating thickness to allow statements about the longitudinal and transverse profile of the coating result on a tape substrate main page.
- the measuring device can be assigned to the sensor class beta-backscatter, X-ray fluorescence, infrared or Advanced Thermal Optics.
- the device comprises for each coating device one of these downstream measuring device, so that the measurements of the respective coating thicknesses on the two main sides of the tape substrate separately and independently of each other for the first and the second main page are possible.
- the device comprises at least one control device connected to the measuring device, which regulates operation and / or positioning of at least one coating device as a function of a desired coating thickness and the measurement data generated by the measuring device.
- the control device processes the measurement data of the measuring device or measuring devices, whereby deviations of the measured coating thickness from the desired coating thickness via a control algorithm and a control signal generated therewith can act on the above-mentioned positioning drives in order to be able to adjust the positioning of the at least one coating device. In this way, for example, the deviations from a longitudinal and / or transverse profile setpoint of the coating thickness of the respective powder coating can be compensated.
- control signal for regulating the respective coating thickness deviation can act on the amount of electrical voltage applied to the electrodes of the respective coating device used for the electrostatic charging of the fluidized coating powder.
- the transferred volume flow of powder coating from the respective coating device to the tape substrate is dependent on the field strength of an electric field between the fluidized bed formed by the coating device and the tape substrate.
- the field strength can over the Fluid bed, or its power supply can be varied.
- At a constant voltage and belt speed is created by a change in distance between the fluid bed and the tape substrate another process control variable for the flow rate of powder coating. This change in distance can be effected by a sole change in the position of the coating device or of the fluidized bed.
- the change in distance can be brought about by raising or lowering the band substrate over the coating device or the fluid bed.
- the tape tension and / or the positioning of the tape substrate can be varied by means of the respective stabilizing roller.
- the device has at least one application device for applying a wet coating to the tape substrate.
- a tape substrate can be coated with a wet coating medium.
- the coating devices and the application device can each be movably arranged between functional positions and rest positions, wherein the driving of at least one coating device into its rest position in one operation and simultaneously with the driving of the application device can be coupled into its functional position, and vice versa.
- At least one coating device can be installed together with the application device on a transport system.
- the application device can be designed as a roll application system for wet paints ("roll coater"), which has at least one application roll and at least one counter roll, between which passes through the tape substrate.
- At least one deflection roller is a counter-roller of the application device.
- the deflection roller can be a counter-roller of a roller application system for wet paints. Due to the double functional assignment of the deflection roller, the structure of the device can be simplified.
- the device comprises at least one belt continuous furnace downstream of the second coating device for heat-treating the coated belt substrate. In the continuous strip furnace, the powder coating applied to the tape substrate on one or both sides can be subjected to a heat treatment to form a closed coating film and / or its layer end property.
- the ribbon continuous furnace may include radiant heat sources disposed above and below the ribbon substrate plane for transferring heat to the ribbon substrate coating and transferring heat to both sides of the ribbon substrate coatings.
- the radiant heat sources may be, for example, those which emit in the infrared spectrum (NIR, IR, dark emitters) of the wavelength range from 1.0 ⁇ to 5.0 ⁇ or a UV spectrum ⁇ 0.4 ⁇ .
- the belt continuous furnace contains no belt-contacting devices or the continuous belt furnace is not in contact with the coated belt substrate.
- the strip substrate main sides can be guided without contact from the strip continuous furnace, starting with the strip substrate entry into the respective coating device, at least to the strip substrate exit.
- the continuous strip furnace can be used either exclusively to achieve the desired product end properties of the coated belt substrate or in combination with another downstream belt continuous furnace only a partial process step of angling (conversion of the powder coating from the solid or powdery state to a melt-viscous liquid state). In the latter case, the final product end properties of the coated belt substrate may be formed in the further belt continuous furnace.
- the strip continuous furnace can be designed, for example, as a convection oven.
- the convection oven may be preceded by a reflow oven.
- This can also be an induction furnace in addition to IR.
- the heating of the strip substrate coating can also take place indirectly via an inductive longitudinal or transverse field heating of the strip substrate.
- the Band continuous furnace can be in particular a floating or hanging furnace.
- the belt continuous furnace can be used for melting, for melting and final heating or only for final heating. It is furthermore advantageous if the device has at least one measuring sensor connected downstream of the belt continuous furnace for detecting at least one product property of the coated belt substrate. With the measuring sensor, at least one coating result can be detected after the heat treatment by means of the continuous band furnace.
- the sensor can be assigned to the sensor class beta-backscatter, X-ray fluorescence, infrared or Advanced Thermal Optics.
- the measuring sensor may be arranged in relation to the running direction of the tape substrate between the outlet of the first coating device and before the entry of the tape substrate in the continuous band furnace.
- the device comprises a measuring sensor, with which the coating result on the first main side of the tape substrate can be detected, and a measuring sensor, with which the coating result on the second main side of the tape substrate can be detected.
- the measurement data of the measurement sensor (s) can likewise be supplied to the control device or a control algorithm and processed by the latter.
- the tape substrate is guided during the coating along a predetermined trajectory, a first main side of the tape substrate with a first coating device, at least partially geodesically below a first path portion of the trajectory
- the tape substrate is deflected at the end of the first web section in the direction of a second web section of the movement path such that the tape substrate in the second web section is opposite to the tape substrate runs in the first web section, and a second main side of the tape substrate is coated with a fluidized, electrostatically charged coating powder, which is fluidly stored in a second coating device which is arranged at least partially geodetically below a second web section.
- the device can be used according to one of the above embodiments or any technically meaningful combination of at least two of these embodiments with each other for performing the method.
- a distance (z-coordinate) between the tape substrate and the respective container is varied by varying a tensile stress in the tape substrate.
- a coating thickness generated by means of the first and / or second coating device is detected contactlessly, wherein an operation and / or positioning of at least one coating device is regulated as a function of a desired coating thickness and the respectively detected coating thickness.
- a further advantageous embodiment provides that the coated tape substrate is subjected to a heat treatment.
- a heat treatment furnace for this purpose, at least one heat treatment furnace, in particular a non-contact Continuous furnace, as described above with respect to the device.
- desired final product properties of the coated tape substrate can be formed.
- Figure 1 a schematic representation of an embodiment of an inventive device.
- FIG. 1 shows a schematic representation of an exemplary embodiment of a device 1 according to the invention for the single-sided and / or double-sided coating of a metallic tape substrate 2.
- the device 1 comprises a guide device 3 for guiding the tape substrate 2 during the coating along a predetermined path of movement.
- the tape substrate 2 runs according to the arrows arranged along the movement path along the movement path.
- the guide device 3 comprises a deflection roller 4, which deflects the vertically incoming belt substrate 2 into a horizontally extending first path section of the movement path.
- the device 1 comprises a first coating device 5 for coating a first main side 6 of the belt substrate 2 with a fluidly stored in a first container 7, electrostatically charged coating powder 8.
- the first coating device 5 and the first container 7 is at least partially geodetic below a arranged first track portion of the trajectory.
- the device 1 comprises a second coating means 9 for coating a second main side 10 of the tape substrate 2 with a fluidly stored in a second container 1 1, electrostatically charged coating powder 8.
- the second Be Anlagenungsseinnchtung 9 is with respect to the running direction of the tape substrate 2 along the movement path of the first Coating device 5 downstream.
- the device 1 further comprises a deflecting unit 12 connected with respect to the movement path between the first coating means 5 and the second coating means 9 for deflecting the tape substrate 2.
- the first web section passes via the deflecting unit 12 into a second path section of the movement path.
- the first track section thus extends from the deflection roller 4 to the deflection unit 12.
- the deflection unit 12 deflects the belt substrate 2 such that the belt substrate 2 runs in the second track section opposite to the belt substrate 2 in the first track section.
- the second coating means 9 or the second container 11 is at least partially arranged geodetically below the second web section.
- the deflection unit 12 comprises two guide rollers 13 and 14 which are connected in series one behind the other in the vertical direction (Z direction) and which each have an electrically grounded roller shell 15.
- Each coating device 5 or 9 is preceded by a stabilizing roller 16 or 17, which is arranged at least partially geodetically below the respective track section. If the tape substrate 2 is not coated by means of the first coating means 5, the stabilizing roll 17 may alternatively be arranged above the web portion preceding the second coating means 9. In this case, the stabilizing roller 17 can be moved by means of an adjusting device, not shown, to a position geodetically above or below the track section. This is another one Process variable for the predetermined influencing of the
- Each coating device 5 or 9 is movably arranged between the functional position shown and a rest position, not shown.
- each coating device 5 or 9 is arranged on a positioning frame 18, which can be moved transversely to the direction of travel of the strip via a rail-guided travel part 19 with rail-guided rollers 20, or linear guides.
- Each positioning frame 18 permits a variation of the position of the respective coating means 5 or 9 in the x-, y- and / or z-direction in order to be able to vary the position of the respective coating means 5 or 9 relative to the tape substrate 2.
- the device 1 additionally comprises a measuring device 21 for the contactless measurement of the coating thickness generated with the first coating means 5.
- the measuring device 21 is connected downstream of the first coating means 5 and connected between the deflection rollers 13 and 14 of the deflection unit 12.
- the device 1 comprises a measuring device 22 for the contactless measurement of the coating thickness generated with the second coating means 9.
- the measuring device 22 is connected downstream of the second coating device 5.
- the device 1 comprises a control device 23 connected to the measuring devices 21 and 22, which controls an operation of the first coating means 5, the second coating means 9 and the positioning frame 18 as a function of a desired coating thickness and the measurement data respectively generated with the measuring means 21 and 22.
- the device 1 may have at least one applicator, not shown, for applying a wet coating to the tape substrate 2. At least one of the deflection rollers 13 and 14 may be a counter-roller of the application device.
- the device 1 comprises two non-contact band pass furnaces 24 and 25 connected downstream of the second coating device 9 for heat-treating the coated band substrate 2.
- the measuring device 22 is connected between the heat treatment furnace 24 and the second coating device 9.
- the device 1 may further comprise at least one measuring sensor 26 connected downstream of the belt continuous furnace 25 for detecting at least one product characteristic of the coated belt substrate 2. This measuring sensor 26 is also connected to the control device 23.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Electrostatic Spraying Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017213371.6A DE102017213371A1 (de) | 2017-08-02 | 2017-08-02 | Vorrichtung und Verfahren zum einseitigen und/oder beidseitigen Beschichten eines metallischen Bandsubstrats |
PCT/EP2018/068809 WO2019025145A1 (de) | 2017-08-02 | 2018-07-11 | Vorrichtung und verfahren zum einseitigen und/oder beidseitigen beschichten eines metallischen bandsubstrats |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3661659A1 true EP3661659A1 (de) | 2020-06-10 |
EP3661659B1 EP3661659B1 (de) | 2021-03-03 |
Family
ID=62948089
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP18742435.3A Active EP3661659B1 (de) | 2017-08-02 | 2018-07-11 | Vorrichtung und verfahren zum einseitigen und/oder beidseitigen beschichten eines metallischen bandsubstrats |
Country Status (7)
Country | Link |
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US (1) | US11241710B2 (de) |
EP (1) | EP3661659B1 (de) |
KR (1) | KR102366390B1 (de) |
CN (1) | CN110997160B (de) |
DE (1) | DE102017213371A1 (de) |
RU (1) | RU2743076C1 (de) |
WO (1) | WO2019025145A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7379235B2 (ja) * | 2020-03-24 | 2023-11-14 | 株式会社Screenホールディングス | 基材搬送装置、印刷装置、塗工装置および基材ロール径取得方法 |
Family Cites Families (25)
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FR83092A (de) * | 1962-06-22 | 1900-01-01 | ||
SU211078A1 (ru) * | 1966-09-05 | 1968-02-08 | К. А. Корнев, О. К. Кошевой, К. К. Хоменкова, Л. И. Човник, А. Н. Черышев , Н. Пазеико | Способ получения стеклопластика |
US3653544A (en) | 1969-05-29 | 1972-04-04 | Bethlehem Steel Corp | Particle dispensing apparatus and method |
GB1357214A (en) | 1971-06-29 | 1974-06-19 | British Steel Corp | Method and apparatus for coating a metallic strip |
US3887720A (en) | 1971-06-29 | 1975-06-03 | British Steel Corp | Method and apparatus for coating a metallic strip |
SU509296A1 (ru) * | 1973-10-18 | 1976-04-05 | Институт Механики Металлополимерныхсистем | Установка дл нанесени покрытийиз полимерных порошков |
SU1742279A1 (ru) * | 1989-04-26 | 1992-06-23 | Центр научно-технического творчества молодежи "Внедрение" | Способ получени пористого полимера |
DE69425023T2 (de) * | 1993-05-07 | 2001-02-22 | Nordson Corp | Pulverbeschichtungssystem und Pulverbeschichtungsdicke-Sensor |
RU2099154C1 (ru) * | 1996-02-09 | 1997-12-20 | Александр Владимирович Пономарев | Способ модификации пористых материлов |
US5891942A (en) * | 1997-05-01 | 1999-04-06 | Fibre Glass-Evercoat Company, Inc. | Coating composition with improved water and mar resistance |
DE19963491A1 (de) * | 1999-12-28 | 2001-07-05 | Alstom Power Schweiz Ag Baden | Verfahren zur Herstellung einer hochwertigen Isolierung von elektrischen Leitern oder Leiterbündeln rotierender elektrischer Maschinen mittels Sprühsintern |
US20020119255A1 (en) | 2000-05-09 | 2002-08-29 | Ranjith Divigalpitiya | Method and apparatus for making particle-embedded webs |
JP3881268B2 (ja) * | 2002-03-25 | 2007-02-14 | 富士フイルムホールディングス株式会社 | 塗布方法および塗布装置 |
FI121810B (fi) * | 2002-03-14 | 2011-04-29 | Metso Paper Inc | Menetelmä kalvon muodostamiseksi |
DE102004010177B4 (de) | 2004-03-02 | 2007-09-13 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Elektrostatische Fluidisierungsvorrichtung und elektrostatisches Fluidisierungsverfahren zur Beschichtung von Substraten mit Beschichtungspulver |
DE102005036184A1 (de) * | 2004-12-07 | 2006-06-08 | Sms Meer Gmbh | Verfahren zur Regelung des Querschnitts von aus einer Drahtwalzstraße austretenden Drähten und Drahtwalzstraße |
DE102006013921A1 (de) * | 2006-03-25 | 2007-09-27 | Sms Meer Gmbh | Verfahren zum Walzen eines Drahts und Drahtstraße |
CN101293236A (zh) | 2008-06-24 | 2008-10-29 | 华南理工大学 | 全自动橡胶膏剂涂布装备及工艺 |
WO2010135769A1 (en) * | 2009-05-26 | 2010-12-02 | Udo Wolfgang Bucher | Wet paint coating thickness measurement and instrument |
US8692887B2 (en) * | 2010-08-27 | 2014-04-08 | General Electric Company | Thermal imaging method and apparatus for evaluating coatings |
CN103818492B (zh) * | 2014-03-11 | 2016-04-06 | 北京交通大学 | 一种轮腿复合载运机器人 |
DE102015210685A1 (de) * | 2014-11-14 | 2016-05-19 | Sms Group Gmbh | Anlage zum zumindest einseitigen Beschichten eines bandförmigen Substrats |
JP2016140832A (ja) * | 2015-02-03 | 2016-08-08 | 東レ株式会社 | 連続体の塗布装置および塗膜付基材の製造方法 |
JP2017079179A (ja) | 2015-10-21 | 2017-04-27 | 東レエンジニアリング株式会社 | 電池極板の製造装置及び電池極板の製造方法 |
CN205981127U (zh) * | 2016-08-26 | 2017-02-22 | 宁德卓高新材料科技有限公司 | 具有在线测厚功能的隔膜涂覆装置 |
-
2017
- 2017-08-02 DE DE102017213371.6A patent/DE102017213371A1/de not_active Withdrawn
-
2018
- 2018-07-11 KR KR1020207003044A patent/KR102366390B1/ko active IP Right Grant
- 2018-07-11 EP EP18742435.3A patent/EP3661659B1/de active Active
- 2018-07-11 CN CN201880050642.9A patent/CN110997160B/zh active Active
- 2018-07-11 WO PCT/EP2018/068809 patent/WO2019025145A1/de active Application Filing
- 2018-07-11 US US16/635,615 patent/US11241710B2/en active Active
- 2018-07-11 RU RU2020100917A patent/RU2743076C1/ru active
Also Published As
Publication number | Publication date |
---|---|
DE102017213371A1 (de) | 2019-02-07 |
EP3661659B1 (de) | 2021-03-03 |
CN110997160A (zh) | 2020-04-10 |
US11241710B2 (en) | 2022-02-08 |
KR102366390B1 (ko) | 2022-02-23 |
RU2743076C1 (ru) | 2021-02-15 |
WO2019025145A1 (de) | 2019-02-07 |
US20200238330A1 (en) | 2020-07-30 |
KR20200024891A (ko) | 2020-03-09 |
CN110997160B (zh) | 2021-10-08 |
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