EP4124390A1 - Dispositif de revêtement et procédé de revêtement - Google Patents

Dispositif de revêtement et procédé de revêtement Download PDF

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Publication number
EP4124390A1
EP4124390A1 EP21187687.5A EP21187687A EP4124390A1 EP 4124390 A1 EP4124390 A1 EP 4124390A1 EP 21187687 A EP21187687 A EP 21187687A EP 4124390 A1 EP4124390 A1 EP 4124390A1
Authority
EP
European Patent Office
Prior art keywords
coating
carrier web
cavity
roller
plastic material
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.)
Pending
Application number
EP21187687.5A
Other languages
German (de)
English (en)
Inventor
Friedrich Kastner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Collin Lab and Pilot Solutions GmbH
Original Assignee
Collin Lab and Pilot Solutions GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Collin Lab and Pilot Solutions GmbH filed Critical Collin Lab and Pilot Solutions GmbH
Priority to EP21187687.5A priority Critical patent/EP4124390A1/fr
Priority to KR1020247003520A priority patent/KR20240027795A/ko
Priority to PCT/EP2022/069440 priority patent/WO2023006407A1/fr
Publication of EP4124390A1 publication Critical patent/EP4124390A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
    • B05C1/0886—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work responsive to the condition of the work
    • B05C1/0891—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work responsive to the condition of the work responsive to the speed of moving of the work
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/16—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work
    • 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
    • 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
    • B05D7/02—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 macromolecular substances, e.g. rubber
    • B05D7/04—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 macromolecular substances, e.g. rubber to surfaces of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/001—Apparatus or machines for carrying out printing operations combined with other operations with means for coating or laminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/002—Apparatus or machines for carrying out printing operations combined with other operations with means for applying specific material other than ink
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/002—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing cleaning devices for sheets or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0081—Devices for scanning register marks
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0808—Details thereof, e.g. surface characteristics
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0817—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
    • 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
    • B05D2201/00—Polymeric substrate or laminate
    • B05D2201/02—Polymeric substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2252/00—Sheets
    • B05D2252/10—Applying the material on both sides

Definitions

  • the application relates to a coating device and a coating method. More precisely, the application relates to a coating device and method for applying plastic material to a carrier web in precise register.
  • EP 3 493 300 A1 A device and a method for applying polymer patches to a substrate is known.
  • this prior art only describes the application in register at a single point on the substrate with a structured roller.
  • the object of the present invention is to overcome the disadvantages of the prior art and to provide a device and a method by means of which a user is able to carry out a simple and register-accurate coating of a carrier web.
  • register-accurate is understood to mean that, analogous to the nomenclature in printing, coated areas of a front and back of a medium to be coated or coated (e.g. carrier web) are/are applied congruently or with greater register.
  • the assignment of which areas are to be register-accurate to which areas is freely selectable. Partial areas can also be applied in register with one another (intersection of the areas).
  • a coating device for applying plastic material in register to a carrier web comprises a first coating roller and a downstream second coating roller.
  • the first coating roller has at least one first cavity, which can be filled with plastic material by means of at least one first nozzle.
  • the second coating roller has at least one second cavity, which can be filled with plastic material by means of at least one second nozzle.
  • a first scraper scrapes the first coating roll and a second scraper scrapes the second coating roll.
  • the first Coating roll cooperates with a first backing roll and the second coating roll cooperates with a second backing roll.
  • the second backing roll includes at least one backing cavity corresponding to the at least one first cavity.
  • the coating device comprises at least one carrier web positioning device.
  • the carrier web is the medium to be coated by the coating device and can be, for example, a continuous belt of foil.
  • the carrier web can comprise metal and/or plastic.
  • the carrier web can also be understood to mean individual sections of the medium which are sent individually through the coating device or are placed on a conveyor belt or are connected by connectors to form a belt.
  • the carrier web has a first carrier web side and a second carrier web side.
  • the second coating roller is downstream of the first coating roller, which means that the second coating roller is arranged downstream of the first coating roller in a processing direction of the coating device or in a direction of passage of the carrier web through the coating device.
  • the carrier web is conveyed through between the first coating roller and the first backing roller and then between the second coating roller and the second backing roller (processing direction).
  • the stripping device strips excess plastic material from the respective cavity.
  • the stripped material can be collected, optionally processed and used again to fill the cavity(ies).
  • the second counter-roller has at least one counter-cavity which corresponds to the first cavity, ie has at least essentially the same or a larger shape and essentially the same position as the first cavity. This means that during operation of the coating device, a first area of plastic material, which was applied to the carrier material through the at least one first cavity, is picked up by the second counter-roller or by the counter-cavity formed therein and is thus not deformed by the second counter-roller ( eg deformed or crushed).
  • the second carrier web side of the carrier web or of the carrier material can be coated with plastic material in a second area by the second coating roller by means of the at least one second cavity.
  • the two areas can be applied to the carrier web with register accuracy.
  • the two areas lying opposite one another on the two sides of the carrier web can only overlap in a partial area, as desired and/or required, or they can also lie exactly on top of one another.
  • the dimensioning of the at least one counter-cavity can correspond to that of the at least one first cavity, but can also be selected to be larger.
  • the dimensioning of the at least one counter-cavity depends on a large number of factors, e.g. the plastic material, the material of the carrier web, a throughput speed of the carrier web through the coating device, temperature, etc.
  • the carrier web positioning device is provided and suitable for positioning the location or position of the carrier web in the coating device with respect to at least one of the coating rollers and/or with respect to at least one of the counter rollers.
  • the carrier web positioning device can also be provided and suitable for positioning the location or position of at least one of the coating rollers and/or at least one of the counter rollers with respect to the carrier web.
  • thermoplastic material any type of thermoplastic material can be used as the plastic material. It is irrelevant whether the materials are unmodified, organic, or mineral-filled. However, the plastic material can also be highly filled plastic material, i.e. plastic material which has at least 50% by weight of solids or fillers.
  • the device can have the advantage that a carrier web can be coated on both sides with at least two areas of plastic material in an accurate register, and this in an economical and quick and high-quality manner.
  • At least one inner surface of at least one of the cavities has a structure.
  • the structure can, for example, detach or hold the plastic material from the cavity influence.
  • a corresponding structure can also be given to the area of plastic material on the carrier web by the structure of the at least one inner surface of the cavity. This can be an advantage, since the structure can positively influence the properties of the product and/or the production process.
  • At least one inner surface of at least one of the cavities has a coating.
  • the coating can, for example, reduce or prevent detachment or adhesion of the plastic material or also influence the surface roughness of the plastic-coated area. This can be an advantage because the coating can positively influence the properties of the product and/or the production process.
  • An apparatus further comprises at least one area detection device.
  • the area detection device detects the position of an area of plastic material coated by the at least one first cavity on the first carrier web side. This can be advantageous since the position of the first coated area on the first side of the carrier web can be determined in this way.
  • the carrier web positioning device can be controlled based on the detected information so that the second area can be applied to the second carrier web side through the at least one second cavity in register with the first area. Furthermore, based on information from the area detection device, the carrier web positioning device can position the carrier web accordingly such that the at least one counter cavity coincides exactly or at least largely exactly with the first area and the first area is thus not damaged by the second counter roller. This can be advantageous because the quality of the product produced by the device can be increased.
  • a device also includes a thickness measurement with regard to a filling or the degree of filling of the at least one first cavity and/or the at least one second cavity.
  • the thickness measurement measures the filling of the at least one first and/or second cavity.
  • the carrier web positioning device comprises at least one of a displacement device of the first and/or second coating roller, or at least one carrier web moving device.
  • the displacement device can move the respective coating roller parallel to its axis of rotation, in particular in or against the processing direction.
  • the carrier web moving device can move the carrier web on its path through the device. This can be achieved, for example, by means of register rollers, rollers on bogies, or rotatable guide rollers, each of which acts on the carrier web. This can have the advantage that a suitable way of influencing the running of the carrier web through the machine can be selected for each carrier web material. In the case of thin foils, for example, it can be advantageous to adjust the coating roller(s) as this minimizes the mechanical impact on the carrier web.
  • the area detection device comprises at least one of a mechanical sensor, an optical sensor or a code on the first and/or second coating roller.
  • a mechanical sensor can be a limit switch or contact switch, for example.
  • An optical sensor can be a camera or a camera system, a backlight sensor, or a laser measurement system.
  • a code can be attached, for example, to the end face of at least one of the coating rollers. The coding can contain the angle of rotation and thus, if the shape of the coating roller is known, also the position of the cavity and thus of the coated area as information. This can be advantageous since the coated areas can be detected more precisely.
  • the area detection device detects the position of at least one edge of a first area of plastic material coated by the at least one first cavity on the first carrier web side of the carrier web and/or at least one edge of the carrier web.
  • a device comprises a dispenser unit for applying at least one film strip.
  • the strip of foil can be used to conduct electricity.
  • a dispenser unit can be arranged in front of the first pair of rollers, between the first and the second pair of rollers or also after the second pair of rollers.
  • the at least one film strip is applied from the dispenser unit along at least one edge of an area of plastic material coated by the at least one first cavity and/or the at least one second cavity onto the carrier web.
  • This can be advantageous because functionally high-quality products can be manufactured by means of the device.
  • the area detection device as well as the carrier web positioning device can be used for the exact positioning of a foil strip along one of the edges.
  • a device further comprises at least one plasticizing unit, which is connected upstream of the at least one first nozzle and/or the at least one second nozzle.
  • the plasticizing unit may comprise at least one of an extruder, a melt pump or a piston accumulator. If the same plastic material is to be introduced into the cavities by means of the two nozzles, it may be sufficient to provide a single plasticizing unit for this purpose. Depending on the requirements and system size, it can but also be advantageous if each nozzle or each coating roller is assigned its own plasticizing unit. This can be advantageous in order to fill the cavities of the at least one first and at least one second coating roller with plastic.
  • the first and/or second stripping device comprises at least one of a doctor blade or a squeeze roller.
  • a doctor blade or a squeeze roller This can be advantageous because excess plastic material can be easily and reliably removed from the coating roller(s). It can be expedient to regulate the temperature of the stripping device(s) in order to promote clean stripping of the excess material on the roller.
  • temperature control of the stripping device can be understood to mean both heating and cooling.
  • the at least one first nozzle and/or the at least one second nozzle is/are adjustable.
  • the adjustability can relate to the size of the outlet cross section and/or to the shape of the outlet cross section of the nozzle. This can be advantageous, since such a filling can be influenced in a targeted manner in terms of quantity and/or speed of the cavity(ies).
  • a device also comprises at least one cleaning unit for cleaning the carrier web, the cleaning unit being provided and suitable for cleaning at least one side of the carrier web.
  • the cleaning can include at least one of mechanical, pneumatic, chemical or physical methods, such as brushes, and/or cleaning agents can be used.
  • a cleaning unit can advantageously be positioned in front of the first coating roller, seen in the processing direction. This can be an advantage because the carrier web can be optimally prepared for coating, which can have a positive effect on the quality of the resulting product.
  • a device further comprises at least one roughening unit for roughening the carrier web, wherein the Roughing unit provided and suitable for roughening at least one side of the carrier web.
  • the roughening can be done by at least one mechanical, chemical or physical process, such as using brushes, abrasive belts (possibly with suction), plasma, solvent misting or heated embossing rollers.
  • a roughening unit can be positioned upstream of the first coating roller, viewed in the processing direction. This can be an advantage because the carrier web can be optimally prepared for coating, which can have a positive effect on the quality of the resulting product.
  • a device further comprises at least one smoothing unit for smoothing the carrier web, the smoothing unit being provided and suitable for smoothing at least one side of the carrier web.
  • the smoothing can be done by at least one mechanical, chemical or physical method, such as by means of a stirrup beam, or by means of a tensioning device.
  • a smoothing unit can be positioned upstream of the first coating roller, viewed in the processing direction. This can be an advantage because the carrier web can be optimally prepared for coating, which can have a positive effect on the quality of the resulting product.
  • a device further comprises at least one processing unit for processing the carrier web, the processing unit being provided and suitable for processing at least one side and/or one edge of the carrier web.
  • the processing unit can, for example, process one or both edges of the carrier web or provide holes, beads, doublings, printing of position markings, printing of codes, attachment of conductive patches, edge trimming with fixed blades or rotary knives on the carrier web.
  • a processing unit can advantageously be positioned upstream of the first coating roller, viewed in the processing direction. Alternatively or additionally, a processing unit can also be arranged between the two pairs of rollers or also after the second coating roller. This can be advantageous since the functionality of the products that can be produced by the device can be increased in this way.
  • the at least one plasticizing unit is preceded by a mixer.
  • the mixer may be a twin or multi-screw extruder.
  • the mixer or the mixing unit can be designed in the form of a single or multiple screw extruder and can also be used directly as a plasticizing unit.
  • static mixers according to the prior art into the melt stream in or after the plasticizing unit. This can have the advantage that the plasticizing unit can be provided with a homogeneous plastic mixture.
  • the at least one plasticizing unit can be controlled via throughput control. This can have the advantage that the cavity(ies) can be filled with plastic material in a defined or controlled manner.
  • a feed block is connected between the at least one plasticizing unit and the at least one first nozzle and/or the at least one second nozzle.
  • the at least one first nozzle and/or the at least one second nozzle are each designed as an application unit comprising a plurality of nozzles, with the plurality of nozzles applying the plastic material one after the other or next to one another or overlapping onto the first coating roller and/or apply to the second coating roller.
  • the application unit on the first and/or second coating roller consists of more than one nozzle and thus enables the application of successive, adjacent or overlapping plastic webs. This can be an advantage because filling of the cavity(ies) can be better controlled in this way.
  • the person skilled in the art is basically familiar with the technology of coextrusion by means of an application unit from the prior art.
  • the first and/or second nozzles are provided and suitable for introducing different plastic materials into the cavity. This can be advantageous since the areas coated by the cavity can thus comprise a number of plastic materials.
  • the at least one first and/or the at least one second cavity can have different levels and at least one nozzle and at least one stripping unit can be assigned to each level.
  • a first level of the cavity can thus be filled with a plastic material and stripped off before a second level is filled with a possibly different plastic material and stripped off. Consequently, by means of a single cavity in a single coating process, a multi-layer area can be applied to the carrier web in one operation.
  • the object of the invention is also achieved by a coating method for coating a carrier web with plastic material.
  • At least one first cavity of a first coating roller is filled with plastic material by means of at least one first nozzle.
  • the at least one first cavity is then stripped off.
  • the plastic material is applied to a first carrier web side in a first coated area.
  • at least one second cavity of a second coating roller is filled with plastic material by means of at least one second nozzle, with the at least one second cavity being stripped off.
  • the plastic material is applied to a second carrier web side in a second coated area.
  • a second counter-roller is controlled in such a way that at least one counter-cavity of the second counter-roller receives the first coated area when the plastic material is applied to the second carrier web side.
  • the 1 shows a roughly schematic coating device 10 in a side view or represents a process sequence or a process flow diagram of a coating process for coating a carrier web 11 with plastic material.
  • the coating device 10 is provided for the register-accurate application of plastic material to a carrier web 11, in particular to a first carrier web side 11a of the carrier web 11 and/or to a second carrier web side 11b of the carrier web 11.
  • the coating device 10 comprises a first coating roller 20 and a second coating roller 30 downstream of the first coating roller 20.
  • Terms such as “downstream”, “subsequently” or “then” refer to the processing direction or process flow direction of the coating device 10.
  • the carrier web 11 is introduced into the coating device following the processing direction and guided through it.
  • the direction of processing is in the in the 1 shown flow chart from right to left and is indicated by an arrow for better understanding.
  • the first coating roller 20 has at least one first cavity 21 and can be filled with a plasticized plastic material by means of at least one first nozzle 22 .
  • the second coating roller 30 has at least one second cavity 31 and can be filled with a plasticized plastic material by means of at least one second nozzle 32 .
  • a first stripping device 23 strips the first coating roller 20 and a second stripping device 33 strips the second coating roller 30 .
  • the first coating roller 20 interacts with a first counter-roller 40 , the carrier web 11 being guided through between the first coating roller 20 and the first counter-roller 40 .
  • the first carrier web side 11a or, in the example shown, the upper side of the carrier web 11 is the first Coating roller 20 facing.
  • the first carrier web side 11a of the carrier web 11 is thus coated by means of the first coating roller 20 .
  • the second coating roller 30 interacts with a second backing roller 50 , the carrier web 11 being guided through between the second coating roller 30 and the second backing roller 50 .
  • the second carrier web side 11b or, in the example shown, the underside of the carrier web 11 faces the second coating roller 30 .
  • the second carrier web side 11b of the carrier web 11 is thus coated by means of the second coating roller 30 .
  • the second counter-roller 50 comprises at least one counter-cavity 51, which corresponds to at least one counter-cavity 51 of the at least one first cavity 21.
  • the coating device 10 comprises at least one carrier web positioning device 60.
  • the one in the 1 The coating device 10 shown can be used in a coating process for coating a carrier web 11 with plastic material.
  • a carrier web 11 is guided through a coating device 10 and is preferably at least partially coated on both sides.
  • the method initially provides for at least one first cavity 21 of a first coating roller 20 to be filled with a plastic material by means of at least one first nozzle 22 .
  • the at least one first cavity 21 is stripped off by means of a first stripping device 23 .
  • the plastic material is applied to a first carrier web side 11a of the carrier web 11 by a rotational movement of the first coating roller 20, so that a first coated region 29 is formed.
  • At least one second cavity 31 of a subsequent, second coating roller 30 is then filled with plastic material by means of at least one second nozzle 32 .
  • This second cavity 31 is also stripped off by means of a second stripping device 33 .
  • the plastic material is applied to a second carrier web side 11b of the carrier web 11 by a rotational movement of the second coating roller 30, so that a second coated region 39 is produced.
  • a second counter-roller 50 which interacts with the second coating roller 30, is controlled in such a way that at least one Counter-cavity 51 of the second counter-roller 50 during the application of the plastic material to the second carrier web side 11b, the at least one counter-cavity 51 receiving the first coated area 29 .
  • At least one inner surface of at least one of the cavities 21, 31, 51 can have a structure.
  • the first coated area 29 and the second coated area 39 have a structure due to the structures of the cavities 21, 31, 51. It is also possible for at least one inner surface of at least one of the cavities 21, 31, 51 to have a coating so that the plastic material that is received in the cavities 21, 31, 51 and is to be dispensed does not adhere to the cavities 21, 31, 51.
  • the coating device 10 can furthermore be embodied with at least one area detection device 61 which detects the position of an area 29 of plastic material coated first by the at least one first cavity 21 .
  • the coating device 10 can also comprehensively comprise a thickness measurement—not shown in the figure—which measures a filling of the at least one first cavity 21 and/or the at least one second cavity 31.
  • a thickness measurement can be implemented as a component of the area detection device 61 .
  • a thickness measurement can also be implemented in the respective cavity 21, 31 or in the vicinity of the respective cavity 21, 31.
  • the carrier web positioning device 60 can comprise at least one displacement device 62 for displacing the first and/or second coating roller 20, 30, and/or at least one carrier web moving device 63 for moving the carrier web 11.
  • the area detection device 61 can include a mechanical sensor, an optical sensor, and/or a code on the first and/or on the second coating roller 20, 30.
  • the area detection device 61 can detect the position of at least one edge of the first coated area 29 and/or at least one edge of the carrier web 11 .
  • the coating device 10 can include a dispenser unit (not shown in the figure) because it is known in principle to those skilled in the art, for the application of at least one strip of film.
  • the dispenser unit can be arranged at the beginning of the coating device 10, ie before the first pair of rollers 20, 40, between the pairs of rollers 20, 40 or 30, 50 or after the second pair of rollers 30, 50.
  • the at least one film strip can be applied to the carrier web 11 by the dispenser unit along at least one edge of the first and/or second coated region 29, 39.
  • the coating device 10 comprises at least one plasticizing unit (not shown in the figure because it is known in principle to those skilled in the art), which is connected upstream of the at least one first nozzle 22 and/or the at least one second nozzle 32 .
  • the at least one plasticizing unit can be preceded by a mixer, which is also not shown in the figures.
  • the at least one plasticizing unit is controlled via a throughput control—likewise not shown in the figure.
  • a feed block can also be connected between the at least one plasticizing unit and the at least one first nozzle 22 and/or the at least one second nozzle 32 .
  • the feed block is also well known to the experts in the 1 not shown.
  • the first and/or the second stripping device 23, 33 can comprise at least one doctor blade and/or one squeezing roller. It may also be that the at least one first nozzle 22 and/or the at least one second nozzle 32 is adjustable.
  • the coating device 10 can comprise at least one cleaning unit 67 for cleaning the carrier web 11, the cleaning unit 67 being provided and suitable for cleaning at least one side 11a, 11b of the carrier web 11. Furthermore, the coating device 10 can comprise at least one roughening unit 68 for roughening the carrier web 11, the roughening unit 68 being provided and suitable for roughening at least one side 11a, 11b of the carrier web 11. Furthermore, the coating device 10 can have at least one smoothing unit 69 for smoothing the carrier web 11, the smoothing unit 69 being provided and suitable for smoothing at least one side 11a, 11b of the carrier web 11. Furthermore, the coating device 10 can have at least one Include processing unit 70 for processing the carrier web 11, the processing unit 70 being provided and suitable for processing at least one side 11a, 11b and/or an edge of the carrier web 11.
  • the cleaning unit 67, the roughening unit 68, the smoothing unit 69 and the processing unit 70 in FIG 1 represented as a common entity.
  • the units can also be expedient or necessary for the units to be arranged individually or independently of one another at the most suitable positions in the coating device 10 in each case.
  • the at least one first nozzle 22 and/or the at least one second nozzle 32 can each be designed as an application unit comprising a plurality of nozzles.
  • the plurality of nozzles can apply the plastic material to the first coating roller 20 and/or to the second coating roller 30 in succession or next to one another or in an overlapping manner.
  • first 22 and/or second nozzles 32 can be provided and suitable for introducing different plastic materials into the cavity 21, 31.
  • the 2 shows a detailed view of a coating roller 20 in side view.
  • the at least one first cavity 21 can have different levels 21a, 21b, wherein each level 21a, 21b can be assigned at least one nozzle and at least one stripping unit.
  • a first level 21a of the cavity 21 can thus be filled with a plastic material and stripped off before a second level 21b is filled with a possibly different plastic material and stripped off.
  • the second level 21b is filled first and then the first level 21a.
  • Simultaneous filling of levels 21a, 21b is also conceivable.
  • the second coating roller 30 or its cavity 31 can also be designed with several levels.
  • the first cavity 21 of the first coating roller 20 is formed centrally in the roller.
  • the first counter-roller 40 which is arranged under the first coating roller 20, cannot be seen.
  • a first coated area 29 is applied to the first side 11a of the carrier web, or to the upper side of the carrier web 11 .
  • the dimension of the area 29 corresponds to that of the first cavity 21 .
  • the carrier web 11 is guided through a second pair of rollers, specifically through a second counter-roller 50 and through a second coating roller 30 .
  • the second counter-roller 50 which acts in the same way as the first coating roller 20 on the first carrier web side 11a or on the top side of the carrier web 11 shown, has a counter-cavity 51 which corresponds to the first cavity 21, i.e. at least in size and shape with it is almost identical. It is also possible that the counter-cavity 51 is larger than the first cavity 21.
  • the first coated area 29 consequently remains undamaged or unaffected by the counter-roller 50 because it is received by the counter-cavity 51 in an exact or precisely positioned manner becomes.
  • a second coated region 39 is applied to the second carrier web side 11b or to the underside of the carrier web 11 by means of the second coating roller 30 , which has a second cavity 31 .
  • the second coated area 39 is offset in two axes relative to the first coated area 29 . It goes without saying that the exact arrangement of the areas 29, 39 corresponds to the discretion of the person skilled in the art or the specific requirements of the product to be produced.
  • a carrier web positioning device 60 is also sketched, which can be operated by means of a motor.
  • the carrier web positioning device 60 is arranged on the second pair of rollers, in particular on the second coating roller 30 .
  • the carrier web positioning device 60 can also be coupled to both pairs of rollers, or it can also be the case that a further carrier web positioning device 60 is formed, which is arranged on the first pair of rollers.
  • the carrier web positioning device 60 can be designed with a displacement device 62 for displacing the second coating roller 30 .
  • the carrier web positioning device 60 can also be configured with a carrier web moving device 63 for moving the carrier web 11 .
  • FIG 3 Conceivable directions of movement or positioning, which can take place by means of the carrier web positioning device 60, are shown in FIG 3 indicated by directional arrows.
  • an area detection device 61 can be formed, which is provided for detecting the first coated area 29 on the first carrier web side 11a.
  • the area detection device 61 is coupled to the drive of the carrier web positioning device 60 or is supplied with energy by it.
  • the area detection device 61 can be formed with a camera and with a limit switch, for example.
  • All information on value ranges in the present description is to be understood in such a way that it also includes any and all sub-ranges, e.g. the information 1 to 10 is to be understood in such a way that all sub-ranges, starting from the lower limit 1 and the upper limit 10, are also included , i.e. all subranges start with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Coating Apparatus (AREA)
EP21187687.5A 2021-07-26 2021-07-26 Dispositif de revêtement et procédé de revêtement Pending EP4124390A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP21187687.5A EP4124390A1 (fr) 2021-07-26 2021-07-26 Dispositif de revêtement et procédé de revêtement
KR1020247003520A KR20240027795A (ko) 2021-07-26 2022-07-12 코팅 장치 및 코팅 방법
PCT/EP2022/069440 WO2023006407A1 (fr) 2021-07-26 2022-07-12 Dispositif de revêtement et méthode de revêtement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21187687.5A EP4124390A1 (fr) 2021-07-26 2021-07-26 Dispositif de revêtement et procédé de revêtement

Publications (1)

Publication Number Publication Date
EP4124390A1 true EP4124390A1 (fr) 2023-02-01

Family

ID=77050918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21187687.5A Pending EP4124390A1 (fr) 2021-07-26 2021-07-26 Dispositif de revêtement et procédé de revêtement

Country Status (3)

Country Link
EP (1) EP4124390A1 (fr)
KR (1) KR20240027795A (fr)
WO (1) WO2023006407A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732800A (en) * 1985-01-23 1988-03-22 Lainiere De Picardie Product adapted to be stuck hot by pressure to flat articles and a process for its production
US20040134596A1 (en) * 2001-06-02 2004-07-15 The Procter & Gamble Company Process for printing adhesives, adhesive articles and printing equipment
EP2351618A1 (fr) * 2008-10-27 2011-08-03 Japan Tobacco, Inc. Machine de fabrication de bande revêtue et procédé de fabrication
EP3493300A1 (fr) 2017-11-30 2019-06-05 Dr. Collin GmbH Procédé d'application d'un patch de polymère à un substrat

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4732800A (en) * 1985-01-23 1988-03-22 Lainiere De Picardie Product adapted to be stuck hot by pressure to flat articles and a process for its production
US20040134596A1 (en) * 2001-06-02 2004-07-15 The Procter & Gamble Company Process for printing adhesives, adhesive articles and printing equipment
EP2351618A1 (fr) * 2008-10-27 2011-08-03 Japan Tobacco, Inc. Machine de fabrication de bande revêtue et procédé de fabrication
EP3493300A1 (fr) 2017-11-30 2019-06-05 Dr. Collin GmbH Procédé d'application d'un patch de polymère à un substrat

Also Published As

Publication number Publication date
KR20240027795A (ko) 2024-03-04
WO2023006407A1 (fr) 2023-02-02

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