EP0761878B1 - Dispositif d'application de matériau fluide ou pâteux sur une bande en mouvement, en particulier de papier ou carton - Google Patents

Dispositif d'application de matériau fluide ou pâteux sur une bande en mouvement, en particulier de papier ou carton Download PDF

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Publication number
EP0761878B1
EP0761878B1 EP96113068A EP96113068A EP0761878B1 EP 0761878 B1 EP0761878 B1 EP 0761878B1 EP 96113068 A EP96113068 A EP 96113068A EP 96113068 A EP96113068 A EP 96113068A EP 0761878 B1 EP0761878 B1 EP 0761878B1
Authority
EP
European Patent Office
Prior art keywords
cleaning
cleaning doctor
doctor
doctor element
liquid
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.)
Expired - Lifetime
Application number
EP96113068A
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German (de)
English (en)
Other versions
EP0761878A2 (fr
EP0761878A3 (fr
Inventor
Zygmunt Madrzak
Benjamin Méndez
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.)
Voith Patent GmbH
Original Assignee
Voith Paper Patent 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
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Publication of EP0761878A2 publication Critical patent/EP0761878A2/fr
Publication of EP0761878A3 publication Critical patent/EP0761878A3/fr
Application granted granted Critical
Publication of EP0761878B1 publication Critical patent/EP0761878B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • 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
    • B05C1/0813—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 supplying liquid or other fluent material to the roller
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/026—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an elongated body renewable by feeding it across the surface
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
    • D21H23/34—Knife or blade type coaters
    • D21H23/36—Knife or blade forming part of the fluid reservoir, e.g. puddle-type trailing blade or short-dwell coaters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/10—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with blades

Definitions

  • the invention relates to a device for applying a liquid or pasty medium on a running material web, in particular made of paper or cardboard.
  • the material web can be made of paper or cardboard or also consist of a textile material.
  • the order of the liquid or pasty medium on the running material web can be done either directly or indirectly. With direct The material web is applied to the outer surface of the roller guided past the commissioned work and in the area of Application chamber the liquid or pasty medium over the application squeegee directly onto the material web in the form of a coating film applied.
  • the roller thus serves as a counter roller for Commissioned.
  • the liquid becomes or pasty medium first on the surface of the roller applied and then touching the roller passed material web taken over.
  • EP 0 319 503 describes a generic device for Apply a liquid or pasty medium to a running material web, in particular made of paper or cardboard, known, with at least one application for the liquid or pasty medium, comprising: one of the commissioned work assigned roller for holding the liquid or pasty Medium for indirect application or for guiding the material web for direct orders, one doctor blade, and one against the Direction of rotation of the roller arranged at a distance from the application doctor and squeegee acting as the front application chamber wall, the with the application squeegee an application chamber for the liquid or pasty medium limited.
  • this known device for the squeegee which said front application chamber wall forms, primarily used a doctor blade.
  • This squeegee blade is also in the immediate vicinity of its effective area or Edge equipped with openings or channels over which liquid or pasty medium from the application chamber flows.
  • the arrangement of the openings or channels in the Doctor blade is hit in such a way that the emerging liquid or pasty flow of the medium onto the roller or Material web surface strikes and possible at the Doctor blade rinses off adhering particles. Beyond that when rinsing causes a pre-wetting that the quality of the subsequent order improved.
  • this device is based on a Direction of rotation of the roller in front of the doctor blade area arranged a nozzle or a channel through which a partial flow of the liquid or pasty medium or another Auxiliary liquid is transported in front of the doctor blade.
  • a lubrication and Sealing effect achieved and also possible on the Squeegee blade rinsed or washed off adhering particles become.
  • Contaminants or particles e.g. fibers, Filler particles, grains of sand or the like that result from loosen the material web.
  • these contaminants are said to just be kept away from the application squeegee by one perfect quality of the applied stroke guarantee.
  • a non-generic application device which works according to the so-called transfer method, in which the application medium is first applied in a kind of open trough to a first roller and then in a nip formed with a second roller to the one to be coated Material web is transferred.
  • the device also has a doctor element which is arranged to be movable in a direction essentially parallel to its longitudinal extension and which serves to meter the medium to be applied or applied to the roller or to level the medium already applied to the roller or the material web. So it is a pure leveling and dosing element.
  • the said mobility of the doctor element serves to avoid uneven or rapid wear of the doctor element in order to always achieve correct leveling and metering of the application medium.
  • the said mobility of the Squeegee element is used during the dosing process worn area of the doctor blade by a fresh one replace and even and over a long period of time correspondingly less wear on the entire squeegee tape to reach. As a result, the doctor element has a long service life.
  • the object of the present invention is a device of generic type described above further that the cleaning effect in particular an increase in pressure in the application chamber improved and one caused by impurities Streaking on the material web is effectively avoided.
  • the device according to the invention allows simple and effective way of realizing a compared to conventional devices or processes significantly improved cleaning effect and in particular also at an increase in pressure in the order chamber of the Contraption.
  • the use of the The device according to the invention thus leads to a qualitative higher quality end product with increased Economics.
  • the device according to the invention furthermore at least one Movement device for moving the cleaning doctor element in which is essentially parallel to its longitudinal extent extending direction. That way you can Contaminants essentially continuously from the Roll surface or the material web are removed, and immediately in front of the dosing element, e.g. the squeegee. It is understood that the movement of the cleaning doctor element be carried out by hand, motorized or automated can.
  • the movement device for continuous, discontinuous, periodic, oscillating and / or gradually moving the cleaning doctor element in the to the Longitudinal extension of the cleaning doctor element essentially form parallel direction. It can also Cleaning squeegee periodically one step further be moved. Because of these different types of movement in the cleaning effect of the Cleaning doctor element increased and to different Textures of the material web and the liquid or pasty medium can be adjusted.
  • Cleaning doctor element rotatably about its longitudinal axis or else is rotatably arranged.
  • a non-rotatable arrangement of the Cleaning doctor element is the movable arrangement of the Cleaning doctor element in a to its longitudinal extent in Mainly parallel direction is particularly simple and effectively and without complex constructive measures perform.
  • a cleaning doctor element positive results which can be rotated around its longitudinal axis is arranged.
  • the Cleaning doctor element a substantially circular Cross-section. This cross-sectional shape allows a particular economical production of the invention Cleaning doctor element and a structurally simple arrangement of the cleaning doctor element in the device.
  • the cleaning doctor element is advantageously rope-like or formed like a band. In this way it has Cleaning squeegee element both flexible and tensile Properties so that it is easily handled with a suitable movement device easily combined and can be stored or disposed of in a space-saving manner.
  • the rope or ribbon-like cleaning doctor element has a struck or braided structure.
  • the cleaning squeegee element simply and effectively by processes known from rope production, such as twisting, Twisting and stranding or made by braiding and various for the cleaning doctor element used materials can by this structure and that associated manufacturing process to a Cleaning doctor element with certain desired properties be combined.
  • a band-like cleaning doctor element can also by several adjacent rope-like parts that e.g. sewn together to form a flat rope will be manufactured.
  • the cleaning doctor element on at least one of its two ends one in the longitudinal direction of the Cleaning blade element extending extension. at this extension can be a final fitting that a connection of the cleaning doctor element to a suitable one Movement device allows, or an extension act of the cleaning doctor element itself.
  • the Cleaning doctor element is by the latter measure e.g. can be wound on a suitable device or on the The device according to the invention is stowable. It is also possible possible material wear of the cleaning doctor element to be replaced by this extension, e.g. the Cleaning doctor element through the movement device transported and a new cleaning doctor element section to Is made available.
  • the device comprises at least one coil device, on the at least a portion of the cleaning doctor element can be wound up.
  • the device comprises at least one coil device, on the at least a portion of the cleaning doctor element can be wound up.
  • the device further comprises at least one deflection device for the cleaning doctor element.
  • the Arrangement and guidance as well as the drive of the Cleaning doctor element, if it is in the Deflection device e.g. around a driven deflection device acts, can be easily realized.
  • the cleaning doctor element is preferably at least partially made of an elastic material with an elastic modulus of ⁇ 40,000 N / mm 2 .
  • the elastic material is a sponge-like material.
  • Such materials are particularly soft and flexible and therefore do not impair the material web used.
  • these materials are easy to compress and have a large inner surface, which enables particularly good absorption of fibers, filler particles, grains of sand or other particles and also allows these impurities to be washed out just as effectively.
  • the cleaning doctor element according to the invention is therefore also outstandingly suitable for problematic material webs, such as waste paper.
  • the elastic material with an essentially inelastic carrier material is connected.
  • This Backing material ensures safe transmission of the the movement device for moving the Cleaning doctor element applied to this and forces prevents excessive wear of the elastic Material.
  • the connection of the elastic material with the inelastic carrier material, or vice versa can by Twisting, stranding or intertwining the two materials or in any other suitable way, for example by gluing or the manufacture of a composite end product.
  • a particularly advantageous embodiment of the invention provides that the squeegee bed of the cleaning squeegee is above its Length in several by at least one space spaced sections is divided, the at least one space an overflow opening for the forms liquid or pasty medium.
  • the sections of the Squeegee beds do not necessarily have to be uniform Have length. They can also be used as overflow openings serving spaces have different sizes. by virtue of the overflow of the liquid or pasty medium will cleaning doctor element loaded with impurities washed out. Especially possibly on the cleaning doctor element adhering long fibers or coarse contamination particles are caused by moving the cleaning squeegee element through stripped the doctor bed at the spaces between the doctor bed and from that through the gaps of the doctor bed liquid or pasty medium passing through is rinsed away.
  • the Doctor bed of the doctor element at least one liquid chamber has, in which the cleaning doctor element at least partially protrudes.
  • the Corresponding liquid chamber Pressure generating device such as a pressure pump or the like.
  • the device according to the invention further comprises preferably at least one cleaning device for the Cleaning blade element.
  • this cleaning device can it is a container filled with a detergent, a spray device that a detergent on the Sprayed doctor blade element, or act like that.
  • a cleaning device can thus further increase the Cleaning effect of the cleaning doctor element and thus a high-quality material surface can be achieved.
  • the cleaning squeegee is designed as an overflow weir, the forms a gap to the application roller, so that the liquid or pasty medium between the cleaning squeegee and the roller can step through.
  • the size of this gap i.e. the distance the side of the cleaning doctor element facing the roller Surface of the roller is in one in the sense of the invention
  • This feature advantageously allows both effective cleaning effect through the cleaning doctor element as well as an overflow control of the liquid or pasty medium.
  • the commissioned work 1 is approximately in the eight o'clock position of an applicator roller 2 arranged turns in the direction of arrow P.
  • the application unit 1 has a color distribution channel 3, via which from the side via a paint distribution pipe, not shown liquid or pasty medium M is supplied.
  • the liquid or pasty medium M comes out of the paint distribution channel 3 via a nozzle 4 in an application chamber 5, which in the Essentially from an application squeegee 6 and a cleaning squeegee 7 is limited.
  • the doctor blade 6 is of conventional design and has one Doctor rod 8, which is mounted in a doctor bed 9, which in conventionally attached to a bar 10 and a known adjusting device 11 in its position opposite the application roller 2 is adjustable.
  • the opposite to the direction of rotation P of the application roller 2 at a distance cleaning squeegee 7 arranged opposite the application squeegee 6 according to the invention comprises a cleaning doctor element 12 which in a doctor bed 13 is mounted.
  • the doctor bed 13 is in turn at the upper free end of an elastic retaining web 14 attached.
  • Doctor bed 13 and holding webs 14 together form the Holder of the cleaning squeegee 7.
  • the other free end of the Retaining webs 14 is fixed to a nozzle flap 15, which in known way for cleaning purposes towards the center of the roller foldable and adjustable to adjust the nozzle 4 is.
  • the holding web 14 of the cleaning squeegee 7 is perfect formed closed, so that the liquid or pasty Medium M from the application chamber 5 not through the holding web 14 can step through. This ensures that at this relatively far from the interface of the Cleaning squeegee 7 with the application roller 2 removed and for a self-cleaning effect of the cleaning squeegee 7 by rinsing not optimal with the liquid or pasty medium M. Make no pressure loss.
  • the application unit also has the color distribution tube 3 opposite side of the nozzle flap 15 a return channel 16, the one on their top in a known manner so-called air boundary layer scraper 17 carries with his Edge 18 close to the surface of the application roller 2 zoom ranges.
  • the output 16a of the return channel 16 is also available a pressure generating device, i.e. one Booster pump 16b, in connection, in which also a Feed line 20 for fresh liquid or pasty medium M empties.
  • the output 16c of the pressure increase pump 16b in turn is connected to the paint distribution pipe 3.
  • FIG. 2 shows in a viewing direction according to arrow II in FIG. 1 is a schematic front view of the invention Device in the area of the cleaning squeegee 7.
  • the length of the individual sections 13.1 to 13.n in the present case about 10 and 50 mm to get as large a number as possible To achieve gaps 22.
  • Sections of the doctor bed 13 do not necessarily have to be of uniform length.
  • the doctor bed 13 can also have sections as required have different lengths.
  • the spaces 22 of the Doctor bed 13, in this case means more precisely: the Spaces 22, the cleaning doctor element 12 and the Top of the holding web 14 together form openings 19, through the liquid or pasty medium from the application chamber 5 overflow to the return channel 16 and with that Wash out contaminated cleaning doctor element 12 can. Part of the flowing out through the openings 19 liquid or pasty medium also meets the outside the application chamber 5 to the cleaning squeegee 7 subsequent surface area 23 of the application roller 2 and realizes the well-known rinsing and pre-wetting effect.
  • the flow cross section of a single intermediate space 22 between two adjacent sections of the doctor bed 13 is approximately 10 to 50 mm 2 .
  • the values mentioned can vary depending on the respective application. These dimensions ensure that, on the one hand, the flow of the liquid or pasty medium through the spaces 22 for the purpose of cleaning the cleaning doctor element 12 and for pre-wetting the application roller 2 is intense enough, on the other hand, the pressure loss occurring and the flow rate are sufficiently limited to the to keep the total amount of liquid in the circulation circuit and thus the required energy consumption of the circulation or pressure increase pump 16b low.
  • FIG. 2 emphasizes in particular the combination of corresponding movement of the cleaning squeegee according to the invention with the device of FIG. 2 to very advantageous Cleaning results, for example, on the Cleaning doctor element 12 adhering long fibers or coarse Contamination particles when moving the Cleaning doctor element 12 through the doctor bed 13 to the Gaps stripped 22 of the doctor bed 13 and from that through the spaces 22 and the openings 19 of the doctor bed 13 washed away liquid or pasty medium become.
  • Fig. 3 shows a schematic sectional view of the doctor element 12 along the line III-III in Fig. 2, wherein the rope-like, struck structure of the cleaning doctor element 12 can be seen particularly well.
  • the cleaning doctor element 12 is essentially made of a sponge-like, elastic material 12.1 with an elastic modulus of less than or equal to 40,000 N / mm 2 .
  • This material 12.1 is easy to compress and has a high inner surface, which ensures a particularly good absorption of fibers, filler particles, grains of sand or other particles as well as an effective washing out of these impurities.
  • the cleaning doctor element 12 according to the invention is therefore also outstandingly suitable for problematic material webs, such as waste paper.
  • the sponge-like, elastic material 12.1 is preferably connected in a suitable manner to an essentially inelastic carrier material 12.2.
  • the connection can be made by twisting, stranding or intertwining the two materials 12.1, 12.2 or in some other way, for example by gluing or the production of a composite material from 12.1 and 12.2.
  • the carrier material 12.2 also forms the soul of the rope-like cleaning doctor element 12.
  • the Cross section can, however possibly also slightly oval or polygonal be a rotation or torsion of the cleaning doctor element 12 due to the force of liquid or pasty Avoid medium or the application roller 2.
  • FIG. 4 shows one in the viewing direction according to arrow II in FIG. 1 schematic front view of the device according to the invention in the area of the cleaning squeegee 7 with further details.
  • the Basic structure of the cleaning squeegee 7 essentially corresponds the structure as it is in connection with FIGS. 2 and 3 has been described. Complementing this, however, are the end faces free end of the rope-like cleaning doctor element 12 with itself extending in the longitudinal direction of the cleaning doctor element Extensions 12.3 provided, the end sections on two each driven to the side of the doctor bed 13 Coil devices 24 are wound.
  • the driven Coil devices 24 act as moving devices for Moving the cleaning doctor element 12.
  • the mobility of the Coil devices 24 is in the drawing by double arrows indicated. This variant is preferably a oscillating movement or a gradual movement of the Cleaning doctor element 12 in a substantially parallel to realized the longitudinal direction D extending direction.
  • FIG. 5 shows one schematic front view of a second embodiment of the Device according to the invention in the area of the cleaning squeegee 7 with further details.
  • the basic structure of the cleaning squeegee 7 again essentially corresponds to that according to FIGS. 2 and 3.
  • the peculiarity of this variant is that the free Ends of the cleaning doctor element 12 to form an endless loop are joined together and this endless loop over several Deflection or support rollers 25, 26 runs, one the rollers also serves as the drive roller 26.
  • This Arrangement is particularly suitable for a continuous or periodically moving the cleaning doctor element 12 in one essentially to the longitudinal extent D of the Cleaning doctor element 12 parallel direction. at a periodic movement is the drive roller 26 in present case designed so that the cleaning doctor element 12 is moved a little further through the doctor bed 13.
  • the mobility of the endless cleaning doctor element 12 is indicated in the drawing by a double arrow.
  • the device according to the invention further comprises a cleaning device 27 for the cleaning doctor element 12.
  • the cleaning device 27 is in the embodiment 5 at a lower portion of the to an endless Loop trained cleaning doctor element 12 is arranged.
  • the cleaning device 27 can be used as one with a Detergent filled or flowed through container or as Spraying device that applies the detergent to the moving cleaning doctor element 12 sprays, or the like be trained.
  • FIG. 6 shows an enlarged representation of the region X in Fig. 1 with a further detailed variant of the doctor bed 13.
  • the doctor bed 13 has here on its side facing the applicator roller 2 trough-like liquid chamber 28 into which the rope-like Cleaning doctor element 12 partially protrudes.
  • Two noses 28.1 and 28.2 of the liquid chamber 28 engage behind the largest Diameter of the cleaning doctor element 12, so that this do not move unintentionally or excessively out of the Liquid chamber 28 can push out.
  • a suitable, with the Corresponding liquid chamber 28 of the doctor bed 13 Pressure generating device provided. This is in the Drawing not shown.
  • To avoid excessive Pressure loss in the liquid chamber 28 is in this Embodiment preferably to use a doctor bed 13 that is not divided into a variety of sections or only with comparatively small openings for the liquid or pasty medium is equipped.
  • the advantage of the design features according to FIG. 6 is primary in that even if the Cleaning doctor element 12 this due to the Pressurizing the liquid chamber 28 of the doctor bed 13 always pressed securely and precisely against the application roller 2 becomes.
  • the doctor bed 13 of the Cleaning squeegee element 12 not in those described above
  • the Cleaning doctor element 12 abuts the roller 2 and just a subset of the liquid or pasty medium over a small gap of about 0 to 1 mm between Cleaning doctor element 12 and applicator roller 2 to the Return channel 16 can overflow.
  • This gap i.e. the Distance of the side facing the application roller 2 Cleaning doctor element 12 to the surface of the roller 2, is preferably adjustable. Allow these features advantageously both an effective cleaning effect through the cleaning doctor element 12 as well as a Overflow control of the liquid or pasty medium.
  • this cleaning squeegee band also by connecting several juxtaposed rope-like Doctor blade element parts that have a round, square or have a rectangular cross section or the like, be made.
  • the complete cleaning doctor element can also other than that mentioned in the context of the description Have cross-sectional shapes.
  • Cleaning doctor element with additional profiles equip that with certain drive or Mechanisms of movement of the device correspond, for example one additional tooth-like or V-belt-like profiling, the with a suitable gear or a V-belt pulley or the like engages.
  • This profiling is preferably on one side of the cleaning doctor element attach that does not have the material web or the roller roams.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Paper (AREA)
  • Coating Apparatus (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Making Paper Articles (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Claims (22)

  1. Dispositif pour l'application d'un fluide liquide ou pâteux sur une bande de matière en mouvement, en particulier en papier ou en carton, avec au moins un dispositif d'application (1) pour le fluide liquide ou pâteux, comprenant
    un rouleau (2) associé au dispositif d'application (1) destiné à recevoir le fluide liquide ou pâteux pour une application indirecte ou destiné à guider la bande de matière pour une application directe,
    une racle d'application (6), et
    une racle de nettoyage (7) disposée à distance de la racle de dépôt (6) en sens contraire au sens de rotation (P) du rouleau (2), qui délimite avec la racle de dépôt (6) une chambre d'application (5) pour le fluide liquide ou pâteux et qui présente un élément de racle de nettoyage (12) s'étendant sur la largeur de la bande de matière et disposé dans un banc de racle (13), qui est disposé de façon mobile dans une direction sensiblement parallèle à sa dimension longitudinale (D).
  2. Dispositif suivant la revendication 1, caractérisé en ce que celui-ci comprend en outre au moins un dispositif de mouvement (24, 26) pour déplacer l'élément de racle de nettoyage (12) dans la direction sensiblement parallèle à sa dimension longitudinale (D).
  3. Dispositif suivant la revendication 2, caractérisé en ce que le dispositif de mouvement (24, 26) est un dispositif de mouvement pour le déplacement continu et/ou discontinu de l'élément de racle de nettoyage (12) dans la direction sensiblement parallèle à sa dimension longitudinale (D).
  4. Dispositif suivant la revendication 2 ou 3, caractérisé en ce que le dispositif de mouvement (24, 26) est un dispositif de mouvement pour le déplacement périodique, oscillant et/ou pas à pas de l'élément de racle de nettoyage (12) dans la direction sensiblement parallèle à sa dimension longitudinale (D).
  5. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément de racle de nettoyage (12) est disposé de façon fixe ou pivotante autour de son axe longitudinal.
  6. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément de racle de nettoyage (12) présente une section transversale sensiblement circulaire.
  7. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément de racle de nettoyage (12) a la forme d'un câble ou d'une bande.
  8. Dispositif suivant la revendication 7, caractérisé en ce que l'élément de racle de nettoyage (12) en forme de câble ou de bande présente une structure de commettage ou de tressage.
  9. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément de racle de nettoyage (12) présente à au moins un de ses deux bouts d'extrémité un prolongement (12.3; 21) s'étendant dans la direction longitudinale de l'élément de racle de nettoyage.
  10. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que les extrémités libres de l'élément de racle de nettoyage (12), qui s'étendent en direction longitudinale, sont réunies en une boucle sans fin.
  11. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que celui-ci comprend en outre au moins un dispositif de bobinage (24), sur lequel au moins une portion (12.3) de l'élément de racle de nettoyage (12) peut être enroulée.
  12. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que celui-ci comprend en outre au moins un dispositif de déviation (25, 26) pour l'élément de racle de nettoyage (12).
  13. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que l'élément de racle de nettoyage (12) se compose au moins en partie d'une matière élastique (12.1) avec un module d'élasticité inférieur ou égal à 40 000 N/mm2.
  14. Dispositif suivant la revendication 13, caractérisé en ce que la matière élastique est une matière de type spongieux (12.1).
  15. Dispositif suivant la revendication 13 ou 14, caractérisé en ce que la matière élastique (12.1) est assemblée à une matière de support (12.2) sensiblement inélastique.
  16. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que le banc de racle (13) de la racle de nettoyage (7) est divisé sur sa longueur en plusieurs sections (13.1 à 13.n) écartées l'une de l'autre par au moins un espace intermédiaire (22), dans lequel l'au moins un espace intermédiaire (22) forme une ouverture de trop-plein (19) pour le fluide liquide ou pâteux.
  17. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que le banc de racle (13) de l'élément de racle de nettoyage (12) comporte au moins une chambre de liquide (28), dans laquelle l'élément de racle de nettoyage (12) pénètre au moins en partie.
  18. Dispositif suivant la revendication 17, caractérisé en ce que celui-ci comprend en outre au moins un dispositif de production de pression communiquant avec la chambre de liquide (28).
  19. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que celui-ci comprend en outre au moins un dispositif de nettoyage (27) pour l'élément de racle de nettoyage (12).
  20. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que la racle de nettoyage (7) est configurée comme un déversoir à débordement, qui forme une fente avec le rouleau (2), de telle manière que le fluide liquide ou pâteux puisse circuler entre la racle de nettoyage (7) et le rouleau (2).
  21. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que la distance entre le côté de l'élément de racle de nettoyage (12) tourné vers le rouleau (2) et la surface du rouleau (2) est réglable dans un domaine de 0 à 1 mm.
  22. Dispositif suivant une ou plusieurs des revendications précédentes, caractérisé en ce que le banc de racle (13) de la racle de nettoyage (7) supporté par un support élastique (14) est rendu imperméable au fluide liquide ou pãteux.
EP96113068A 1995-09-01 1996-08-14 Dispositif d'application de matériau fluide ou pâteux sur une bande en mouvement, en particulier de papier ou carton Expired - Lifetime EP0761878B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19532388A DE19532388C1 (de) 1995-09-01 1995-09-01 Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE19532388 1995-09-01

Publications (3)

Publication Number Publication Date
EP0761878A2 EP0761878A2 (fr) 1997-03-12
EP0761878A3 EP0761878A3 (fr) 1997-06-25
EP0761878B1 true EP0761878B1 (fr) 2002-01-16

Family

ID=7771083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96113068A Expired - Lifetime EP0761878B1 (fr) 1995-09-01 1996-08-14 Dispositif d'application de matériau fluide ou pâteux sur une bande en mouvement, en particulier de papier ou carton

Country Status (7)

Country Link
US (1) US5788771A (fr)
EP (1) EP0761878B1 (fr)
JP (1) JPH09103731A (fr)
AT (1) ATE212093T1 (fr)
CA (1) CA2184516C (fr)
DE (2) DE19532388C1 (fr)
ES (1) ES2171582T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649559A1 (de) * 1996-11-29 1998-06-04 Voith Sulzer Papiermasch Gmbh Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Streichmediums auf eine laufende Materialbahn
DE19723458A1 (de) 1997-06-04 1998-12-10 Voith Sulzer Papiermasch Gmbh Vorrichtung und Verfahren zum Auftragen eines flüssigen oder pastösen Mediums auf einen sich vorbeibewegenden Untergrund
FI111230B (fi) * 1998-05-20 2003-06-30 Metso Paper Inc Filminsiirtopäällystimen applikointilaite ja menetelmä applikointikammion tulopuolen rajaavan elimen voitelemiseksi
DE19839916A1 (de) * 1998-09-02 2000-03-09 Jagenberg Papiertech Gmbh Verfahren und Vorrichtung zur Verminderung des Volumens oder Drucks eines Fluids, das von sich bewegenden Oberflächen in einen Spalt eingeschleppt wird
JP2004027441A (ja) * 2002-06-27 2004-01-29 National Printing Bureau エンドレスドクターブレード装置
DE10245072A1 (de) * 2002-09-27 2004-04-08 Voith Paper Patent Gmbh Auftragswerk
DE10245075A1 (de) * 2002-09-27 2004-04-01 Voith Paper Patent Gmbh Auftragswerk
WO2006058367A1 (fr) * 2004-11-30 2006-06-08 Cochlear Acoustics Ltd. Ensemble fixation implantable pour mise en place amovible d'un dispositif medical
DE502006003618D1 (de) * 2006-09-01 2009-06-10 Mitsubishi Hitec Paper Bielefe Vorhangbeschichtungsverfahren sowie eine dafür verwendete Vorrichtung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL268472A (fr) * 1960-08-29
NL125971C (fr) * 1960-09-19
JPS584589B2 (ja) * 1976-08-12 1983-01-27 富士写真フイルム株式会社 塗布方法
DE8400325U1 (de) * 1984-01-07 1985-07-18 Jagenberg AG, 4000 Düsseldorf Vorrichtung zum Beschichten von über eine Stützwalze laufenden Materialbahnen mit regelbarer Auftragsstärke
WO1987000091A1 (fr) * 1985-07-05 1987-01-15 Oy Wärtsilä Ab Application a arret de courte duree avec une grande quantite de pate excedentaire
AT396437B (de) * 1986-10-25 1993-09-27 Voith Gmbh J M Vordosiereinrichtung in einer streichanlage
JPH03501823A (ja) * 1987-10-10 1991-04-25 ツインマー，ヨハネス 塗着装置
FI81734C (fi) * 1987-12-03 1990-12-10 Valmet Paper Machinery Inc Foerfarande och anordning foer applicering och dosering av bestrykningsmedel pao roerligt underlag.
IT1241179B (it) * 1990-02-16 1993-12-29 Beloit Italia S.P.A. Testa patinatrice atta ad applicare uno strato di sospensione di patinatura su un foglio continuo di carta.
FI90575C (fi) * 1992-01-30 1994-02-25 Valmet Paper Machinery Inc Laite liimapuristimessa
SE501564C2 (sv) * 1993-06-18 1995-03-13 Btg Kaelle Inventing Ab Bestrykningsanordning för en eller tvåsidig bestrykning av en löpande bana
DE4402226C2 (de) * 1994-01-27 1997-11-06 Voith Gmbh J M Rakelvorrichtung

Also Published As

Publication number Publication date
US5788771A (en) 1998-08-04
EP0761878A2 (fr) 1997-03-12
CA2184516A1 (fr) 1997-03-02
DE19532388C1 (de) 1996-12-19
ATE212093T1 (de) 2002-02-15
DE59608587D1 (de) 2002-02-21
JPH09103731A (ja) 1997-04-22
ES2171582T3 (es) 2002-09-16
CA2184516C (fr) 2006-06-06
EP0761878A3 (fr) 1997-06-25

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