Application unit having a powder feeding apparatus for feeding pulverulent material, and coating apparatus

Abstract

The invention relates to an application unit (101) which has a powder feeding apparatus (200) for feeding a pulverulent material (004), wherein the application unit (101) comprises a first roller (102) and a second roller (103') that forms a nip (104) with the first roller (102), wherein, in the region of the spandrel above the nip (104), a receiving space (116) having a width extending in the axial direction of the second roller (103; 103') is formed, and wherein, above the nip (104; 104'), a shaft (202) is provided, into which pulverulent material (004; 004') is able to be fed via a linear conveyor (204) comprised by a delivery device (201). An upper end of the shaft (202) and an output-side end, located thereabove, of the linear conveyor (204) or of a downwardly leading channel portion (219) arranged thereon are connected together in a vibration isolated manner via a connection (216) that terminates the drop distance all around. The invention also relates to a coating apparatus (100) having such an application unit (101).

Description

[0001] Description

[0002] Application unit with a powder feed device for feeding powdery material and coating device

[0003] The invention relates to an applicator with a powder feed device for feeding powdery material and a coating device according to claim 1 and 19 respectively.

[0004] In WO 2020 / 150254 A1, a film is produced by calendering a powder mixture and wound onto a roll to be fed as such to a further process, where it can be laminated to a collector. In one embodiment, the powder mixture is applied to a belt and guided into the nip between two rollers.

[0005] JP 57 72 427 B2 relates to a powder rolling device for producing an electrode material from powder. In one embodiment, powder is conveyed by a central vibrating conveyor into a central region of a hopper formed above a roller gap, and by two outer vibrating conveyors into the edge regions. In another embodiment, the feed hopper comprises five sections.

[0006] JP 2012-254422 A discloses a coating device with two rollers for coating a web with a coating material, in which a hopper to be supplied with coating material from above by a conveyor dips with its lower end into the upper gusset above the roller gap.

[0007] CN 216749956 U discloses a feed device for a roller assembly for producing battery electrodes. A weighing device is provided at the inlet of the feed device for adjusting the raw material quantities for the powder mixture. The materials are mixed in a container, fed to a heating container, and from there, via a vibrating conveyor, to a funnel-like container provided above the roller nip.

[0008] CN 113102161 A relates to a device for feeding highly viscous battery slurry and a coating device. The slurry is first conveyed by a screw conveyor into a feed hopper. From the hopper outlet, the slurry can be discharged into a gap below between two rollers.

[0009] The invention is based on the object of providing an application unit with an improved powder feed device for feeding powdery material and a coating device.

[0010] The object is achieved according to the invention by the features of claim 1 and 19 respectively.

[0011] The advantages that can be achieved with the invention are, in particular, that a dry film with an active material layer that is as uniform and gap-free as possible can be reliably produced.

[0012] The solution according to the invention also ensures, in particular, a uniform, uninterrupted flow of powder into the gap used for film formation. For example, the risk of bridging caused by loads in higher material layers and / or low material flow, and thus, for example, gaps or damaged areas resulting from a lack of material slipping in the film, is reduced. In particular, a shaft acting as a chute makes it possible to ensure the most defined and / or uniform powder level possible across the width extending in the axial direction of the rollers.

[0013] An application unit which is particularly preferred in connection with the invention has a powder feed device for feeding a powdery material, wherein the application unit comprises a first roller and a second roller which forms a gap with the first roller, wherein in the region of the gusset above the gap, i.e. in the space formed above the gap between the lateral surfaces of the two rollers and which has a profile in particular wedge-like or triangular, a feed space is formed with a width extending in the axial direction of the second roller, and wherein a shaft is provided above the gap, into which shaft powdery material can be fed via a linear conveyor which is enclosed by a discharge device, in particular a linear conveyor which includes a vibration drive.

[0014] In one embodiment according to the invention, an upper end of the shaft—particularly one that is fixed to the frame during operation—and an output end of the linear conveyor located above it—particularly one that vibrates along with it—or a channel section arranged on the linear conveyor, leading downwards—and in particular one that vibrates along with it—are connected to each other in a vibration-isolated manner. The latter is realized by a connection—particularly elastic or compressible—that connects the downward-leading channel section and the shaft in a vibration-isolated manner, which completely seals off the material's fall path from the outside, particularly in the area of ​​the connection.

[0015] For this purpose, the upper end of the shaft and the output end of the linear conveyor located above or at a higher level, or of the shaft section arranged on the latter and leading downwards, can advantageously be connected to one another in a vibration-insulated manner via a wall that continues the fall path for the material and closes it off all around.

[0016] A vibration-isolated connection is to be understood in the sense that a vibration of one part, in this case for example the linear conveyor designed as a vibrating conveyor, is not transmitted to the other part or at most is transmitted to a considerably damped extent, i.e. the parts are not rigid but are to a certain extent relatively movable and elastic and / or connected or coupled to one another via a compressible seal.

[0017] In a preferred embodiment, the shaft dips with a lower opening into the supply space formed above the roll gap in the gusset and is arranged at a distance from the outer surfaces of the two rolls such that the opening lies below, i.e. at a lower level, a tangent connecting the apex lines - e.g. at the level of half the roll barrel length - of the two rolls and between the respective outer surfaces of the two rolls and the lower end of the shaft at the level of the opening, viewed horizontally, there remains a cross-section that is open at the top, i.e. not covered by the shaft. The linear conveyor is preferably designed as a vibratory conveyor.

[0018] The shaft is, for example, arranged in a fixed manner in the frame during normal, trouble-free production operation, but is preferably adjustable and / or adjustable with regard to the vertical position of its outlet opening - for example manually or preferably by a drive means.

[0019] In an above-mentioned application unit, the second roller or a roller which interacts directly with the second roller or indirectly via one or more further rollers and acts as a laminating roller forms a second gap in the nip between its outer surface and the outer surface of a roller acting as a counter-pressure roller, through which the carrier substrate can be guided and can be subjected to the dry film formed via the first gap.

[0020] Embodiments of the invention are illustrated in the drawings and are described in more detail below.

[0021] Shown are: Fig. 1 a schematic representation of a product to be manufactured;

[0022] Fig. 2 is a schematic representation of an application unit for a one-sided application of a dry film onto a carrier substrate;

[0023] Fig. 3 is a schematic representation of an application unit for simultaneously applying a dry film to both sides of a carrier substrate;

[0024] Fig. 4 is a sectional view of a double application unit with two cooperating application units at the level of a frame side wall;

[0025] Fig. 5 is a perspective view of a powder feed device provided over two rollers of the applicator;

[0026] Fig. 6 is a sectional view of the powder feed device from Fig. 4 provided over two rollers of the applicator with a schematic representation of a connection to a control and / or regulating device.

[0027] A product 001; 002 to be produced using a coating device 100; 100* described in more detail below can be formed, for example, by a web-shaped intermediate product 002 that is still to be cut, e.g. a product strand 002 formed as an electrode strand 002, or by arc-shaped end products 001 that have already been cut in the machine, e.g. product sections 001 formed as electrode units 001, or electrodes 001 for short.

[0028] For the production of such products 001; 002 with a material layer 003; 003', in particular an active material layer 003, 003', applied to one or both sides of a carrier substrate 006, preferably a carrier substrate web 006, e.g. a current collector foil 006, a coating device 100; 100* with at least one application unit 101; 101' is provided, by means of which powdery, preferably dry, in particular solvent-free material 004; 004', in particular in the form of a preferably solvent-free and / or dry powder mixture 004; 004', can firstly be processed, in particular by pressing and / or applying a pressing force, into a dry film 003 and subsequently this dry film 003; 003' can be used as the above-mentioned material layer 003; 003' can be applied to at least one first side of the carrier substrate 006, in particular by pressing and / or applying a contact force.

[0029] An above-mentioned powder mixture 004; 004', in particular in the form of a dry powder, comprises - in particular for the production of electrode units 001 for lithium-ion batteries or accumulators - for example, more than ninety percent by weight of an active material such as one or more of the lithium compounds lithium iron phosphate, lithium manganese oxide, nickel-rich lithium nickel manganese cobalt oxide, lithium nickel cobalt aluminum oxide, lithium cobalt oxide, lithium manganese nickel oxide and / or lithium titanate, a few, for example three percent by weight of a conductive additive, for example graphite or so-called CNTs, i.e. multi-walled carbon nanotubes, and a few, for example two percent by weight of a plastic which acts as a binder in the subsequent powder composite, for example polytetrafluoroethylene (PTFE).

[0030] The carrier substrate 006, for example, simultaneously represents the current-conducting layer of the electrode unit 001 and is formed, for example, by an electrically conductive material in the form of a foil, fleece, or fabric, e.g., a metal. It is formed, for example—in particular for the production of electrode units 001 for lithium-ion batteries or accumulators—from aluminum or copper and / or has, for example, a thickness d006 of 5 to 16 pm. In the case of the production of an anode, it is made, in particular, from copper with, for example, a thickness d006 of, for example, in the range of 5 to 13 pm, and in the case of the production of a cathode, it is made, in particular, from aluminum with, for example, a thickness d006 in the range of 7 to 16 pm.

[0031] In a preferred embodiment, the carrier substrate 006 has, at least in the surface area to be coated with the dry film 003; 003', a surface coating with a bond-supporting or bond-inducing agent 007; 007', e.g., a binder 007; 007', a primer 007; 007', or an adhesive 007; 007'. Such an agent 007; 007' can be formed by a thermoplastic or reactive binder or primer and, for example, comprise a thermoplastic component and / or have a thickness of only a few pm, e.g., at most 5 pm, in particular at most 3 pm.

[0032] A thickness d003; d003' of the active material layer 003; 003' on the product 001; 002, ie of the electrode unit 001 or of the electrode strand 002, is, for example, at most 240 pm, in particular at most 150 pm, preferably at most 100 pm and / or is, for example, at least 20 pm, in particular at least 30 pm, preferably at least 40 pm thick.

[0033] For example, a density p of the applied material 004, 004 on the finished product 001 ; 002 is greater than 3000 kg / m 3 , preferably at least 3500 kg / m 3 An intermediate product 002 leaving the coating device, e.g. also referred to as a precursor and possibly subsequently to be calendered, may have a lower density p, but e.g. of at least 2,000 kg / m 3 , preferably at least 2,500 kg / m 2 , in particular of at least 2,900 kg / m 3 .

[0034] To ensure an effective manufacturing process, preferably web-shaped carrier substrate 006 is processed into the above-mentioned end or intermediate product, which, for example, has a width b006 of at least 300 mm, advantageously at least 500 mm, in particular at least 550 mm, or even 600 mm and more, in an advantageous embodiment even up to 1,200 mm. In this case, the carrier material 006 is not coated with the dry film 003; 003' over its entire width, for example, but only up to a free edge region in which the surface of the metallically conductive carrier material 006 remains free and accessible - e.g. for connecting lines. Such a width b003 of the coating amounts, for example, to at least 200 mm, advantageously to at least 230 mm, or even to 300 mm and more.

[0035] For the above-mentioned production of a dry film 003, a first roller 102, in particular a metering roller 102, and a second roller 103, in particular a laminating roller 103 of a first application unit 101 are provided in such a way that they form a first gap 104, in particular a first film-forming or metering gap 104, in the nip between their lateral surfaces, through which the powder mixture 004, which is conveyed into the nip, for example by a device for supplying powdery material 200, in short powder supply device 200, can be conveyed to form the dry film 003 (see, for example, Fig. 2).

[0036] The application point is preferably formed here directly by a nip of the second roller 103, which in this case acts as a laminating roller 103, with a roller 106; 103 acting as a counter-pressure roller 106; 103', or by a roller which interacts directly with the second roller or indirectly via one or more further rollers and acts as a laminating roller, with a roller 106; 103 acting as a counter-pressure roller 106; 103' (not shown here). The second or further roller acting as a laminating roller 003 and the roller 106; 103 acting as a counter-pressure roller 106; 103 form a second gap 107, in particular an application gap 107, hereinafter referred to as e.g. B. also referred to as laminating gap 107, through which the carrier substrate 006 conveyed along a transport direction Ts can be guided and, in particular on the side facing away from the counter-pressure roller 106; 103, with the film formed via the first film forming gap 104, e.g.at least 20 pm thick, e.g. between 40 pm to 200 pm, in particular 60 to 120 pm thick dry film 003 can be applied. In a preferred embodiment, the coating device 100; 100* comprises a second application unit 101 by means of which a powder mixture 004', in particular solvent-free and / or dry, e.g. conveyed into the nip by a second device for supplying powdery material 200', in short powder supply device 200', can first be processed, in particular by pressing and / or applying a pressing force, into a second dry film 003'; 003 and subsequently this second dry film 003'; 003 can be applied to the other, second side of the carrier substrate 006, in particular by pressing and / or applying a pressing force. In principle, this can be the same powder mixture 004' or a powder mixture 004' that is different from the first powder mixture 004'.

[0037] Also in the second application unit 10T, a first roller 102', in particular metering roller 102', and a second roller 103', in particular laminating roller 103', are preferably provided such that they form a first gap 104', in particular second film-forming or metering gap 104', in the nip between their lateral surfaces, through which the powder mixture 004' can be conveyed to form the second dry film 003'.

[0038] Here too, the second roller 103' of the second application unit 10T can form a gap 107'; gap 107 in the nip between its lateral surfaces, either directly or indirectly with the second roller 103' or via one or more further rollers and acting as a laminating roller (not shown here), with a roller 106'; 103 acting as a counter-pressure roller 106'; 103, through which the carrier substrate 006 can be guided and, in particular on the second side facing away from the second counter-pressure roller 106'; 103, can be subjected to the second dry film 003' formed via the second film-forming gap 104'; 104.

[0039] In a first embodiment of the coating device 100 for double-sided application, two such application units 101; 10T are provided in the substrate path, spaced from one another on the two sides of the substrate path, each of which has a first, a second and a counter-pressure roller 102; 103; 106; 102'; 103'; 106'.

[0040] In a second, here preferred embodiment of the coating device 100 for double-sided application, the second roller 103' of the second application unit 10T or a roller of the second application unit 101' which interacts directly with the second roller 103' or indirectly via one or more further rollers, forms a common gap 107 acting as a two-sided laminating gap 107 with the second or further roller 103 of the first application unit 101 acting as a laminating roller 103 in a nip between their lateral surfaces, wherein the two laminating rollers 103; 103' forming the gap 107 between them act mutually as counter-pressure rollers 103'; 103. The carrier substrate 006 can be guided through between the latter and, in particular on both sides, is contacted with the film forming gap 104; 104' formed dry films 003', 003' can be applied.Such an arrangement of two application units 101; 10T cooperating for simultaneous application on both sides is also referred to below as a double application unit 101, 10T.

[0041] In a particularly advantageous, further specified embodiment (see, for example, Fig. 4), the rollers 102; 103; 102'; 103'; 106, i.e. the first, the second and the counter-pressure roller 102; 103; 106 in a single-sided application unit 101 or the respective first and second rollers 102; 102'; 103; 103' of the two application units 101; 101 interacting as a double application unit 101, 10T are mounted in respective sub-frames 108.1; 108.2; 108.3; 108.4 of a multi-part frame 108, which in their relative position along a perpendicular to the axis of rotation of at least one of the two adjacent rollers 102; 103; 103; 103'; 106 extending adjustment direction are positionally variable relative to each other in such a way that a distance between their axis of rotation and / or a distance between the lateral surfaces of the two adjacent rollers 102; 103; 103; 103'; 106 - e.g. via a force applied at least on one side orcoated carrier substrate 006 or via the powdered material 004; 004' - effective contact force can be varied or adjusted.

[0042] A relative positioning of the rollers 103; 103'; 106 forming the application gap 107; 107' with one another or their sub-frames is carried out in an advantageous embodiment by an actuator having at least one drive means 112; 112' that can be controlled with regard to the force, e.g. a hydraulic cylinder-piston system 112; 112' or a torque-controllable and / or regulatable motor 112; 112', at least force-controlled, ie as a result of a specific setting force to be set, a relative positioning of the rollers 102; 103; 102'; 103' forming the film-forming gap 104; 104' with one another by at least one drive means 111; 112' that can be adjusted with regard to a position. 11 T or positionable stop means 109 having actuator advantageously at least path-based, ie as a result of a certain gap width to be set.In a particularly advantageous variant, the application gap 107; 107' and / or the film-forming gap 104; 104' can be adjusted either force-controlled or travel-based by a combined actuator. A travel-based or combined actuator can be implemented, for example, by limiting a travel path at least toward the relevant side by stop means 109, adjustable, for example, via actuating and / or drive means 113, e.g., a stop 109 adjustable via an actuator 113. In the case of a travel limitation, this stop defines the end position and against which the component to be adjusted with respect to the position is or can be adjusted by means of a force-based or non-position-accurate drive means, e.g., a hydraulic cylinder 112. In the case of force-based adjustment, this stop is removed from the travel path in the case of a combined actuator or is completely omitted in the case of a purely force-based actuator.As an alternative to the stop means 109, a path-based actuator can be formed by a positionally positionable drive means 111, e.g., a servomotor 111 or a servo-hydraulic drive 111; 11T. In this case, the stop means 109 including the actuator 113 that are effective between the two rollers 102; 103; 103'; 103' or sub-frames 108.1; 108.2; 108.3; 108.4 in question can be omitted. In a preferred embodiment, at least one drive means 111; 11T; 112; 112' comprising a drive means engages between two adjacent sub-frames 108.1; 108.2; 108.3; 108.4 and generates a relative actuating movement and / or tensile force between the two sub-frames 108.2; 108.3; 108.4 acting actuator on the sub-frames 108.1; 108.2; 108.3; 108.4 in such a way that it drives the two rollers 102; 103; 103'; 103' or the adjacent sub-frames 108.1; 108.2; 108.3; 108.4 with a drive arranged between the sub-frames 108.1; 108.2; 108.3; 108.4, the force directed toward each other and acting on the two sub-frames 108.1; 108.2; 108.3; 108.4 is transferred into a relative position corresponding to the specified gap width or the desired setting force. The force acts only between the two rollers 102; 103; 103'; 103' involved and not from the outside by pressing one roller 102; 103; 103'; 103' against the other.

[0043] For the supply or introduction of the powder mixture 004; 004' into the first gap 004; 004, a device 200; 200' for supplying powdery material 004; 004', in short powder supply device 200; 200', for supplying a powdery material 004; 004' is provided, by means of which a supply space 116; 116' formed in the gusset above the gap 104; 104' between the first and second rollers 102; 103; 102'; 103' can be supplied with the powdery material 004; 004'.

[0044] In the supply space 116; 116' formed in the gusset above the gap 104; 104' between the first and second rollers 102; 103; 102'; 103', a certain amount of powdered material 004; 004' is held or can be held in advance in order to be conveyed into the gap 104, 104' and processed into the dry film 003, 003'. The supply space 116; 116' is delimited on the one hand by the lateral surfaces of the two rollers 102; 103; 102; 103' and on the end faces, for example by a side limiter 114, for example a side plate 114, which rests against the end face of the roller from the side or is preferably in the gusset of the two rollers 102; 103; 102'; 103' with whose lateral surfaces cooperates to seal the storage space 116; 116'.In a particularly advantageous embodiment, two side plates 114 are provided, which interact with the lateral surfaces and can be adjusted in an axially parallel direction, forming a width-variable storage space 116; 116' for receiving the powder mixture 004; 004'. Depending on the desired width and / or axial position of the dry film 003; 003', the storage space 116; 116' can be varied or capable of being varied in the position of its side boundary 114 on at least one, preferably on both sides.

[0045] For a controlled feed of the powdery material 004; 004' into the first gap 104; 104' formed between the first and the second roller or the feed space 116; 116' formed in the gusset, a powder feed device 200; 200' is particularly preferably provided, by means of which a defined and / or controllable stream of powder mixture 004 - e.g. as evenly as possible over an entire feed width - can be fed to the gap 104; 104' or the gusset or feed space 116; 116' formed above the gap 104; 104', which can be approximately, e.g. with a maximum deviation of e.g. B. up to ± 20%, advantageously up to ± 10%, in particular up to - 10%, of a working width of the application unit 101, ie the width over which powdery material 004 is or can be fed from the filling and / or supply space 116; 116' to the gap 104 for forming the dry film 003, and which e.g.exactly corresponds to a clear width of the front space 116; 116' at the level of the gap entrance.

[0046] The following embodiment of the powder feed device 200; 200' applies to the powder feed devices 200, 200', each of which is shown only schematically. The powder feed device 200; 200' is described and illustrated below using only the unprimed reference numeral, but is applicable accordingly to a second such powder feed device 200' with primed reference numerals for simultaneous or offset double-sided application.

[0047] The powder feed device 200 comprises at least one dispensing device 201 which controls and / or defines the dispensed quantity and through which a controlled flow of material 004 can be fed directly or indirectly to the supply space 116; 116' formed in the gusset above the gap 104.

[0048] Instead of discharging the powdery material 104 on the output side of the discharge device 201 directly into the storage space 116; 116' in the gusset above the gap 104, in particular the roller gap 104, the powdery material 004 can, however, be discharged on the output side directly or indirectly into a shaft 202 which, with a lower opening 208, e.g. outlet opening 208, is immersed in the gusset or storage space 116; 116' formed above the roller gap 104; 104' - and in particular during production operation - for example at least slightly into the powdery material 004 surrounding the lower opening 208. During production operation, ie during operation of the application unit 101 under production conditions, the material flows are set such that the powdery material 004 in the shaft 202, e.g. B. storage shaft 202, intentionally backs up - e.g. over the entire or at least part of the height.For ease of identification, shaft 202 is also referred to as storage shaft 202 below.

[0049] The storage shaft 202 dips with its lower opening 208 into the supply space 116; 116' at a height which lies within the gusset, ie below a tangent connecting the apex lines at the height of half the roll barrel length of the two rolls 102; 103, but without closing the supply space above the gap 04 through its opening 208 and wall at the top.In other words, the accumulation shaft 202 is arranged in the gusset and is designed with a width such that, in the region of its lower end, it is arranged in the gusset, but with its lower side edge running parallel to the gap 004, it is spaced apart from the lateral surfaces of the two rollers 102; 103 in such a way that an open cross-section remains between the respective lateral surface and the facing side edge at the level of the opening 208, viewed horizontally, in particular an open cross-section whose width - viewed at the level of the opening 208 in the direction perpendicular and horizontal to the roller length - corresponds on each side to at least one tenth, in particular at least one quarter of the free flow cross-section in the viewed direction and / or has at least 5, in particular at least 20 mm. As a result, material 004 emerging from the accumulation shaft can, depending on the back pressure - iethe height of the accumulated material column - flow laterally into the upwardly open areas to the side of the shaft 202 and - e.g. at least in the immediate vicinity of the accumulation shaft end - possibly even rise to a level above the opening 208, so that the material column accumulated in the shaft 202 stands directly on the material 004 present in the storage space 116; 116' and / or the lower storage shaft end having the opening 208 possibly dips into the material 004 held in the storage space 116; 116'. Directly below the accumulation shaft 202, a back pressure acts which is essentially determined by the - preferably controllable - accumulation height in the accumulation shaft 202. In contrast to large-volume powder reservoirs with edge areas in which, for example,where there is little or no significant material flow, but where there is a risk of caking or bridging due to a greater layer thickness, a powder flow into the gap 104 with as little disruption as possible can be achieved here by the narrower shaft cross-section with, for example, a controllable accumulation height and an otherwise limited filling height in the storage space 116; 116'.

[0050] For the sake of clarity, it should be noted that the space also referred to as the gusset - as can be seen in the figures - is a space with an essentially triangular or wedge-shaped profile, which is delimited on two sides by two concavely inwardly curved surface lines or surfaces - ie the roll surface surfaces - and at the top by an imaginary tangent or tangential plane lying on both rolls.

[0051] The storage shaft 202 can preferably be continuous across a feed width present at least on the output side or, if appropriate, can be formed across the feed width by a plurality of directly adjacent or spaced-apart shaft sections 202.x. A divided storage shaft 202 can, for example, be formed by a shaft extending across the width, which is divided by partition walls, e.g., sheet metal sections, into spaced-apart shaft sections 202. The singular is used below for the continuous or divided storage shaft 202, with the proviso that the relevant teaching—unless contradictory or not explicitly differentiated—is to be applied accordingly to both configurations.

[0052] Preferably, the feed width of the storage shaft 202, i.e. the total width of the continuous or interrupted lower opening 208 of the continuous or divided shaft 202, at least on the output side, corresponds almost, i.e. with, for example, a maximum deviation of up to ± 20%, advantageously up to ± 10%, in particular up to - 10%, to a working width of the application unit 101, i.e. the width over which powdery material 004 is or can be fed from the feed space 116; 116' to the gap 104 for forming the dry film 003. This working width is defined, for example, by the position of the two side plates 114 laterally delimiting the feed space 116; 116'.

[0053] The dispensing device 201 comprises, for example, a supply device 203, for example, a material or powder reservoir 203, in particular a reservoir container 203, for example in the form of a reservoir hopper 203, as well as a linear conveyor 204 to be fed or charged with the material 004 from the supply device 203 and preferably controllable with regard to the conveying rate, which is preferably designed as a vibration conveyor 204 - in particular electromagnetically operated or operable - and / or through which powdery material 004, 004' can be dispensed in metered quantities on the output side to the subsequent material path, in particular directly or indirectly to the storage chute 202. The material 004 can preferably be dispensed on the output side of the dispensing device 201 or the linear conveyor 204 over a dispensing width which is approximately, i.e., with, for example,a maximum deviation of up to ± 20%, advantageously up to ± 10%, in particular up to - 10%, of the working width of the application unit 101.

[0054] The storage container 203 and the vibration conveyor 204 together preferably form a dispensing device 201, which is referred to, for example, as a dosing device 201 with a vibration drive 207 or also as a dosing vibrator 201.

[0055] The linear conveyor 204 formed by a vibration conveyor 204 comprises, for example, a vibrating or vibrating chute 206 with, for example, a vibration table 206 and lateral guides 219 for lateral limitation of the conveying flow, as well as a drive means 207 driving this or these, in particular a vibrating or vibration drive 207 driving this, in particular an electromagnetically excited one, wherein the terms vibrating or vibration drive 207 are understood here to be synonymous with one another as a drive device driving a vibrating or vibration device. The vibration drive 207 or a controller controlling this vibration drive 207 is preferably variable in vibration frequency and / or amplitude and / or the vibration table is adjustable with respect to its gradient viewed in the conveying direction TP manually or by means of a drive means 211, e.g., an actuator 211.In an advantageous embodiment, at least the output-side discharge width, but preferably the conveying width effective for conveying, ie the width of the conveying flow on the vibrating conveyor, is adjustable, for example by the lateral guides 219 being adjustable in the axial direction transversely to the conveying direction TP over at least one adjustment range - e.g. manually or via drive means.

[0056] Instead of, or advantageously in addition to, this, in an advantageous embodiment or further development, a feed width of the supply device 203, i.e. the width over which the material 004 is or can be fed to the vibration conveyor 204 by the supply device 203, is adjustable, e.g. in that integrated side plates (not shown here, however,) in the outlet area can be adjusted laterally in the axial direction over at least one adjustment range - e.g. manually or via drive means. The feed width - adjusted accordingly if necessary - preferably corresponds approximately, i.e. with a maximum deviation of up to ± 20%, advantageously up to ± 10%, in particular up to - 10%, to the conveying width and / or the discharge width of the linear conveyor 204 and / or the working width of the application unit 101.

[0057] The storage shaft 202, which extends with its outlet or outlet opening 208 into the gusset or the storage space 116; 116' formed therein, is arranged in a frame-fixed manner during operation, i.e. during stationary production operation, i.e., for example, fixedly mounted on or connected to a frame of the powder feed device 200, but is preferably adjustable and / or adjustable in the vertical position of the outlet opening 208. The storage shaft 202 can be adjustable with respect to the vertical position of its outlet opening 208, for example, manually or remotely controlled by a drive means 212, e.g., an actuator 212, in order, for example, to vary a fill level in the gusset or storage space 116; 116' by varying the vertical position and thus, by varying the effective pressure, to vary a feed rate into the gap 104.

[0058] In principle, the storage chute 202 can be provided with an upper opening 209 directly below a discharge-side end of the discharge device 201 or can open below it in such a way that powdery material 004 leaving the discharge device 201 on the discharge side is or can be discharged directly into the upper opening 209, e.g., inlet opening 209. A storage chute 202 arranged and / or designed in this way can in principle be connected to and / or supported by the linear conveyor 204 in a corresponding position at the output end of the linear conveyor 204.

[0059] Preferably, however, the linear conveyor 204 or the discharge-side end of the discharge device 201 and the upper end of the accumulation shaft 202 comprising the upper opening 209 are not rigidly connected to one another, but are, for example, vibration-decoupled from one another or at least dampened or vibration-isolated. The discharge-side end of the discharge device 201 and the end of the accumulation shaft 202 comprising the upper opening 209 can essentially be unconnected or, preferably, vibration-isolated, e.g., elastically connected to one another. Such a decoupled or at least vibration-isolated connection 216 is preferably provided such that it continues the fall path between the discharge-side end of the discharge device 201 and the inlet into the upper opening 209 of the accumulation shaft 202 and, for example,against the escape of powdery material 004 - encloses and / or seals to the outside.

[0060] Such a connection 216 can be realized, for example, by providing a shaft section 217 leading downwards in the region of the discharge-side end of the discharge device 201, which is received with a region of its lower end in the region of the upper end of the storage shaft 202, wherein the shaft section 217, viewed in the vertical direction, overlaps with the storage shaft 202, but for the purpose of vibration decoupling is not in contact with it or is only in contact with it via a vibration-isolating seal.

[0061] In a preferred embodiment, a lower end of a shaft section 217 leading downwards in the region of the discharge-side end of the discharge device 201 is spaced vertically from the upper end of the storage shaft 202, but is connected to the storage shaft 202 in a vibration-isolated manner via a connection 216 which continues the fall path in the above sense and closes it all the way around. Such a connection is formed, for example, by an elastically deformable wall 216 which laterally delimits the fall path, e.g. in the form of an elastically deformable sleeve 216, in particular a rubber sleeve 216. In principle, the wall 216 can also be designed to absorb or absorb the oscillations or vibrations in a different way, for example by a bellows which is elastically deformable in the longitudinal direction and / or in the radial direction and which, for example,circumferential folds or folds running in the direction of fall, another fabric-like flexible wall. As an alternative to a vibration-isolating wall 216, a contactless plug-in connection can also be provided between the two shafts 216; 217 with, for example, a small gap, e.g., less than 10 mm, wherein the gap is sealed all around, for example, by a flexible and / or compressible sealing material, e.g., a porous foam material. Such a wall 216 or a connection 216 formed by the above-mentioned wall 26 or seal seals the fall path between the discharge device 201 and the shaft 202 while simultaneously providing vibration decoupling or at least insulation.In addition, in the event that the storage shaft 202 is adjustable with respect to the vertical position of its outlet opening, a vertical relative movement - at least within a desired adjustment range - is possible due to the elasticity.

[0062] Preferably, during production operation, the entire feed shaft 202, 216, 217 is or will be kept filled to the top so that a constant back pressure is present across the width.

[0063] In a preferred embodiment of the linear conveyor 204 as a vibratory conveyor 204, the downward-leading shaft section 217 is arranged on the output side of the vibratory table 206 directly at its front edge 223 with an upwardly open opening 218, e.g., shaft opening 218, or under a slot-like opening 218 formed on the front edge 223 and extending across the discharge width in the front area of ​​the vibratory table 206, and is connected to it—e.g., rigidly but possibly detachably. Since the shaft section 217 is part of the vibratory table 206 or is rigidly connected to it, the table is also vibration-driven during operation.

[0064] The storage shaft 202 and / or the output-side shaft section 217 can have a constant clear cross-section when viewed in the vertical direction or, in an advantageous embodiment, can have a clear cross-section that increases continuously, e.g., conically, downwards over at least part or all of their vertical length - in projection onto a cutting plane perpendicular to the roll axis, e.g., of the second roll 103. Such a design additionally counteracts caking of the material 004 or bridging.

[0065] The storage shaft 202 with the shaft section 217 and the wall section 216 which may be located therebetween together form, for example, a feed shaft 202, 216, 217 which is or can be filled with the powdery material 004 on the inlet side - in particular over its entire width, which preferably corresponds approximately, e.g. with a maximum deviation of up to ± 20%, advantageously up to ± 10%, in particular up to - 10%, to a working width of the application unit 101 - by the linear conveyor 204, in particular vibration conveyor 204, and on the outlet side - in particular over its entire width, which preferably corresponds approximately, e.g. with a maximum deviation of up to ± 20%, advantageously up to ± 10%, in particular up to - 10%, to a working width of the application unit 101 B. a maximum deviation of up to ± 20%, advantageously up to ± 10%, in particular up to - 10%, corresponding to a working width of the application unit 101 - feeds or can feed the supply space 116; 116' formed in the gusset above the gap 104.

[0066] In this case, the feed shaft 202, 216, 217 can basically be formed in one piece, by only the above-mentioned storage shaft 202 and with the lower end of the storage shaft 202, which is arranged in particular fixed to the frame, can dip into the storage space 116; 116' or preferably in the manner described above can be made in several parts, e.g. with at least one operationally positioned, ie rigidly connected to a frame of the delivery device

[0067] 201 and / or the application unit 101; 10T, and preferably immersed in the supply space 116; 116', and in particular a shaft section 217 rigidly connected to the linear conveyor 204, in particular vibrating therewith, and a shaft section 217 between the linear conveyor 204 or the shaft section 217 and the storage shaft

[0068] 202 vibration-isolated or vibration-isolating wall or sleeve 216, which continues the fall path. In an advantageous further development, the vertical position of the shaft 202, and thus the exit opening 208, can be varied manually or by a drive means 212. During operation, the single- or preferably multi-part feed shaft 202, 216, 217 is or will be filled preferably completely up to the exit-side front edge 223 of the linear conveyor 204 or possibly even slightly beyond, and is maintained at this fill level by subsequently conveyed material 004. This ensures a constant level across the width and thus a uniform supply to the feed space 116; 116'.If material 004 accumulates above the upper opening of the feed chute 202, 216, 217 or in the area of ​​the front edge 223 of the linear conveyor 204 directly upstream of the opening in the feed chute 202, 216, 217, the conveying flow is reduced by taking a suitable measure, for example via a control circuit R12; R14; R15 explained in more detail below, e.g. if the level falls in the feed chute 202, 216, 217 or in the area of ​​the front edge 223 of the linear conveyor 204 directly upstream of the feed chute 202, 216, 217, the conveying flow is increased by taking a suitable measure, for example via a control circuit R12; R14; R15 explained in more detail below.

[0069] In an advantageous development of the supply device 203 designed as a storage container 203, this device, as a whole or at least with a lower region, is displaceable in the vertical direction and can preferably be adjusted in its vertical position by a drive means 214, e.g., an actuator 214. This allows the outlet gap between the supply device 203 and the vibration table or vibration chute 206—and thus the gap width for the outflow of the material 004—to be varied. Independently of this or in addition thereto, the supply device 203 designed as a storage container 203 can comprise a vibration drive, which, for example, excites at least part of the wall defining the storage space in the storage container to vibrate.

[0070] Instead or in addition to this, in an advantageous embodiment of the supply device 203 designed as a storage container 203, a vibrating device 221 with a structure that is only partially permeable, e.g. a vibrating screen 221, or - in a coarser embodiment - a vibrating grid 221 can be provided in the clear flow cross-section for the material 004, which can be driven, in particular vibrated, in a direction transverse to the flow direction by drive means 222, e.g. a vibrating drive 222. In this way, settling of the material 004 can be avoided or at least reduced, or already set material 004 can be loosened again. Such a vibrating screen 221 is, for example,shown only schematically in the figures and can be led outwards via sealed slots through one or more walls of the storage container 203 and driven from the outside, or can be located entirely inside the supply device 203 and arranged entirely in the fall path of the material 004. Instead of or in addition to this, a vibration drive (not shown) can be provided, by which at least one wall of the supply device 203 can be set into vibration in order to prevent settlement by transferring it to the material 004 or to loosen material 004 that has already settled.

[0071] In a particularly advantageous embodiment, at least one sensor system with at least one - preferably contactless - sensor 213 is provided, which, for example, supplies information on a fill level of the material 004 in the fall path of the feed shaft 202, 217, 216 - formed, for example, by the shaft section 217, the storage shaft 202 and optionally the wall 216 in between - or in a region of the output-side front edge 223 of the vibrating trough 206 lying or accumulated material 004, which in particular - viewed in the flow direction of the material 004; 004' - lies directly in front of, for example, at a distance of at most 20 mm from the front edge 223. The at least one or respective sensor 213 is therefore preferably directed from above onto the inlet opening into the feed shaft 202, 217, 216 or, viewed upstream in the above sense, onto a point on the vibrating trough 206 directly in front of it.The front edge 223 should also be understood as the upstream edge of an opening leading into the feed chute 202, 217, 216, since this represents the effective front edge 223 of the vibrating chute with regard to the material discharge into the feed chute 202, 217, 216.

[0072] This sensor system is based, for example, on a contactless measuring principle, e.g., preferably using sound waves or electromagnetic radiation, in particular based on ultrasound with one or more sensors 213 designed as ultrasonic sensors 213. Preferably, it forms a control circuit R12; R14; R15 or R13 via a respective signal connection S2; S4; S5 or S3 with a control and / or regulating device 224 connected via a signal connection S1, in particular with a control logic or electronic control circuit included in the control and / or regulating device 224, and with a drive means 207; 211; 217, by means of which a conveying rate of the discharge device 201 can be varied and / or an above-mentioned drive means 212, by means of which a vertical position of the shaft 202 or its outlet opening 208 can be adjusted.

[0073] The sensors 213 are preferably arranged on a cross member (not shown) which, in an advantageous further development, can be varied in its position when viewed in the conveying direction of the linear conveyor 204, ie at least between a first position in which it is above or closer to the opening leading into the shaft, and a second position in which it is further upstream, e.g. further away from the alignment of the opening leading into the shaft, viewed in the horizontal direction.

[0074] The sensor system can have one or preferably several sensors 213 arranged axially next to one another, e.g. at least or exactly three, e.g. three to nine, sensors 213. In the case of several sensors 213, the above-mentioned fill level can be monitored across the width at several, e.g. three, points in order to issue, for example, at least one warning message if a maximum or minimum fill level is exceeded or undershot. Instead of this or in addition to this, in the case of several sensors 213, for example, a control of the fill level can be provided using a value formed from the individual results of the sensors 213 using a fixed rule, e.g. an average value, via one of the above-mentioned R12; R14; R15 or R13.

[0075] A particularly advantageous control circuit R12 comprises the above-mentioned sensor system for detecting the layer thickness or the fill level, with at least one sensor 213 for detecting information on the above-mentioned fill level of powdered material 004; 004' in the shaft 217, 202, 216 or in the area of ​​the front edge 223. In such a control circuit R12, for example, the sensor 213 providing the information on the fill level is signal-connected to a control logic or circuit comprised of an above-mentioned control and / or regulating device 224, which in turn is in signal connection S2 with the control means of the drive means 207 driving the vibration drive 207 in order to vary the conveying and / or discharge rate of powdered material 004, 004'. Alternatively or additionally, the sensor 213 providing the information on the fill level can be signal-connected via aControl and / or regulating device 224 comprises control logic or circuitry in a control circuit R14 for varying the conveying and / or dispensing rate of powdered material 004, 004' in signal connection S4 with the control means of the drive means 214 varying the vertical position of the storage container 203 and / or in a control circuit R15 in signal connection S5 with the control means of the drive means 211 varying the inclination of the vibrating trough 206.

[0076] A variable V representing the machine speed can also be supplied to the control logic or circuit comprised by the above-mentioned control and / or regulating device 224, which variable can be incorporated, for example, into the control algorithm in such a way that, for example, a setpoint value or setpoint range for the fill level is varied or can be varied according to a stored relationship between machine speed and setpoint value or range.

[0077] List of reference symbols

[0078] 001 Product, end product, electrode unit, electrode, product section

[0079] 002 Product, intermediate product, product strand, electrode strand

[0080] 003 Material layer, active material layer, dry film, powder composite film

[0081] 003' Material layer, active material layer, dry film, powder composite film

[0082] 004 Material, powdery, powder mixture (especially dry)

[0083] 004' Material, powdery, powder mixture (especially dry)

[0084] 005 -

[0085] 006 Carrier substrate

[0086] 007 Bonding agent, primer, binder, adhesive

[0087] 007' Bonding agent, primer, binder, adhesive

[0088] 100 coating device

[0089] 101 Commissioned work, first

[0090] 10T applicator, second

[0091] 102 Roller, first, dosing roller

[0092] 102' roller, first, metering roller

[0093] 103 Roller, second, laminating roller, counterpressure roller

[0094] 103' Roller, second, laminating roller, counterpressure roller

[0095] 104 gap, first, film forming gap, metering gap, roll gap, nip

[0096] 104' gap, first, film forming gap, metering gap, roll gap, nip

[0097] 105 -

[0098] 106 roller, counterpressure roller

[0099] 106' roller, counterpressure roller

[0100] 107 Gap, second, application gap, laminating gap

[0101] 107' gap, second, application gap, laminating gap

[0102] 108 frame

[0103] 108.1 Partial frame .2 Partial frame .3 Partial frame .4 Partial frame Lifting means, stop - Drive means, position-controlled, motor, position-controllable and / or adjustable, servo motor, servo-hydraulic drive Drive means, position-controlled, motor, position-controllable and / or adjustable, servo motor, servo-hydraulic drive Drive means, force-controlled, cylinder-piston system, motor, torque-controllable and / or adjustable, hydraulic cylinder ' Drive means, force-controlled, cylinder-piston system, motor, torque-controllable and / or adjustable, hydraulic cylinder Actuating and / or drive means, actuator Side limitation, side plate - Feed chamber ' Feed chamber Device for feeding powdery material, powder feeding device ' Device for feeding powdery material, powder feeding device Dispensing device, dosing device, dosing vibrator Shaft, accumulation shaft .x Shaft section Provision device, material orPowder feed, feed container, feed hopper Linear conveyor, vibrating conveyor - vibrating chute, vibrating chute, vibrating table 207 Drive means, vibrating drive, vibrating drive (204).

[0104] 208 Opening, outlet opening

[0105] 209 Opening, entrance opening

[0106] 210

[0107] 211 Drive means, actuator (206)

[0108] 212 Drive means, actuator (202)

[0109] 213 Sensor, ultrasonic sensor

[0110] 214 Drive means, actuator (203)

[0111] 215

[0112] 216 connection, wall, sleeve, rubber sleeve

[0113] 217 shaft section

[0114] 218 Opening

[0115] 219 Side guide

[0116] 220

[0117] 221 vibrating device, vibrating screen, vibrating grid

[0118] 222 Drive means, vibrating drive

[0119] 223 leading edge

[0120] 224 Control and / or regulating device b003 Width b006 Width d003 Thickness d003' Thickness d006 Thickness

[0121] R12 control loop

[0122] R13 control loop

[0123] R14 control loop

[0124] R15 Control circuit 51 signal connection

[0125] 52 Signal connection

[0126] 53 Signal connection

[0127] 54 Signal connection

[0128] 55 Signal connection

[0129] Ts transport direction (006)

[0130] TP conveying direction (004; 004')

[0131] V Machine speed representing quantity

Claims

Claims 1. Applicator (101) with a powder feed device (200) for feeding a powdery material (004), wherein the applicator (101) comprises a first roller (102) and a second roller (103') forming a gap (104) with the first roller (102), wherein in the region of the gusset above the gap (104) a supply space (116) is formed with a width extending in the axial direction of the second roller (103; 103'), wherein above the gap (104; 104') a shaft (202) is provided, into which shaft (201) comprised linear conveyor (204) powdery material (004; 004') can be fed, characterized in that an upper end of the shaft (202) and an output-side end of the linear conveyor (204) located above it or of a downwardly leading channel section (219) arranged on the latter are connected to one another in a vibration-insulated manner via a connection (216) which closes off the fall path all the way around.

2. Applicator according to claim 1, characterized in that an upper end of the shaft (202) and an output-side end of the linear conveyor (204) located above or at a higher level or of a shaft section (217) arranged thereon and leading downwards are connected to one another in a vibration-insulated manner via a wall (216) which continues the fall path for the material (004) and closes off all around.

3. Application device according to claim 1 or 2, characterized in that the shaft (202) with a lower opening (208) into the supply space (116) formed in the gusset above the roll gap (104; 104') and is arranged at a distance from the lateral surfaces of the two rolls (102; 103) in such a way that the opening (208) lies below a tangent connecting the apex lines of the two rolls (102; 103) and between the respective lateral surface of the two rolls (102; 103) and the lower end of the shaft (202) at the level of the opening (208) viewed horizontally leaves a cross-section that is open at the top, ie not covered by the shaft (202).

4. Application device according to claim 1, 2 or 3, characterized in that the linear conveyor (204) is designed as a vibration conveyor (204).

5. Applicator according to claim 1, 2, 3 or 4, characterized in that the linear conveyor (204) extends on the output side over a delivery width which corresponds approximately, ie with a maximum deviation of up to ± 20%, to the working width of the applicator (101).

6. Application device according to claim 1, 2, 3, 4 or 5, characterized in that the upper end of the shaft (202) and an output-side end of the linear conveyor (204) located above or at a higher level or of the shaft section (217) arranged on the latter and leading downwards are connected via an elastically deformable wall (216) which laterally delimits the fall path all around.

7. Applicator according to claim 6, characterized in that the upper end of the shaft (202) and the downwardly leading shaft section (217) are connected to one another via a rubber sleeve (216).

8. Applicator according to claim 1, 2, 3, 4, 5, 6 or 7, characterized in that the shaft (202) is arranged in the dispensing device (201) and / or in the applicator (101; 101') in a frame-fixed manner during operation, ie is rigidly connected to a frame of the dispensing device (201) and / or the applicator (101; 101').

9. Application device according to claim 7, characterized in that the operationally The shaft (202) is mounted on the frame so that it can be varied in its vertical position manually or by a drive means (212) in the frame of the dispensing device (201) and / or the application unit (101; 10T).

10. Applicator according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that a sensor system with at least one sensor (213) is provided, which is directed from above onto the inlet opening into the feed shaft (202, 217, 216) or onto a point on the vibrating trough (206) directly before the inlet into the feed shaft (202, 217, 216) and / or which supplies information on a layer thickness of the material (004) lying in an area directly upstream of an output-side edge of the linear conveyor (204) or on a fill level in the fall path of the feed channel (202, 216, 207) formed by the shaft (202) or comprising the shaft (202).

11. Applicator according to claims 9 and 10, characterized in that the sensor system comprising at least one sensor (213) together with a control logic or electronic control circuit connected via a signal connection (S1) and with the drive means (212), by means of which the vertical position of the shaft (202) can be varied, forms a control circuit (R13) for maintaining a desired level for the layer thickness in front of the feed shaft (202, 217, 216) or the fill level in the feed shaft (202, 217, 216).

12. Applicator according to claim 10 or 11, characterized in that the sensor system comprising the at least one sensor (213) together with a control logic or electronic control circuit connected via a signal connection (S1) and with a drive means (207; 211; 217) by means of which a conveying rate of the dispensing device (201) can be varied, forms a control circuit (R12; R14; R15 or R13) for maintaining a desired level for the layer thickness or the fill level.

13. Applicator according to claim 12, characterized in that, as the drive means (207; 211; 217) varying the conveying rate of the dispensing device (201), a vibration drive (207) of the linear conveyor (204) designed as a vibration conveyor (204) is part of the control circuit (R12) for maintaining a desired level for the layer thickness or the fill level.

14. Applicator according to claim 13, characterized in that the vibration drive (207) can be varied via the control circuit (R12) as a function of a result supplied by the sensor system with regard to the stroke of the vibration movement and / or with regard to the vibration frequency.

15. Applicator according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14, characterized in that the shaft (202) viewed in the vertical direction has a continuously increasing clear cross-section over at least part or all of its vertical length in projection onto a sectional plane lying perpendicular to the roller axis of the second roller (103).

16. Applicator according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 or 15, characterized in that the dispensing device (201) comprises a storage container (203) in which material (004) to be fed to the gap (104) can be kept and fed to the linear conveyor (204) on the input side.

17. Applicator according to claim 16, characterized in that the storage container (203) comprises, in the clear flow cross-section for the material (004), a vibrating device (221) with a structure that is only partially permeable, which can be vibrated by drive means (222) in a direction transverse to the flow direction of the material (004).

18. Applicator according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 or 17, characterized in that the shaft (202) is arranged in a frame-fixed manner during operation, but is adjustable and / or displaceable with regard to the vertical position of the outlet opening (208).

19. Coating device (100) for dry coating a carrier substrate (006) with a dry film (003; 003') with at least one application unit (101; 10T), by means of which powdery material (004; 004') can first be processed into a dry film (003; 003') by applying a pressing force and subsequently this dry film (003; 003') can be applied to a first side of the carrier substrate (006), characterized by the design of the application unit (101; 10T) according to one of claims 1 to 18, wherein the second roller (103; 103') or a laminating roller (103; 103') effective roller (103; 103) in the nip (104; 104') between its outer surface and the outer surface of a roller (106; 103') acting as a counter-pressure roller (106; 103') forms a second gap (107; 107') through which the carrier substrate (006) can be guided and can thereby be subjected to the dry film (003; 003') formed via the first gap (104; 104').

20. Coating device according to claim 19, characterized by a second application unit (10T; 100) in the embodiment according to one of claims 1 to 18, into which powdery material (004'; 004) can be introduced via a further powder feed device (700'; 700), can be processed therein to form a second dry film (003'; 003) and subsequently this second dry film (003'; 003) can be applied to the other, second side of the carrier substrate (006), and that in the second application unit (10T; 100) a first roller (102'; 102) and a second roller (103'; 103) are also provided such that the second rollers (103'; 103) of the two application units (101; 10T) form a Form an application gap (107; 107') through which the carrier substrate (006) can be guided and at the same time can be exposed on both sides to the dry film (003; 003') formed via the respective first gap (104; 104').

Images