[go: up one dir, main page]

EP0812958A1 - Dispositif pour l'application de deux couches dans l'ordre successif de médias liquides ou pâteux sur un cÔté d'une bande de material en marche - Google Patents

Dispositif pour l'application de deux couches dans l'ordre successif de médias liquides ou pâteux sur un cÔté d'une bande de material en marche Download PDF

Info

Publication number
EP0812958A1
EP0812958A1 EP97105890A EP97105890A EP0812958A1 EP 0812958 A1 EP0812958 A1 EP 0812958A1 EP 97105890 A EP97105890 A EP 97105890A EP 97105890 A EP97105890 A EP 97105890A EP 0812958 A1 EP0812958 A1 EP 0812958A1
Authority
EP
European Patent Office
Prior art keywords
application
roller
material web
assigned
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.)
Withdrawn
Application number
EP97105890A
Other languages
German (de)
English (en)
Inventor
Benjamin Mendez
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 Sulzer Papiermaschinen 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 Voith Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0812958A1 publication Critical patent/EP0812958A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • B05C1/12—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 fed round 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
    • 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
    • B05C9/06—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 two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side 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
    • B05C9/08—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 and performing an auxiliary operation
    • B05C9/14—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 and performing an auxiliary operation the auxiliary operation involving heating or cooling
    • 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

Definitions

  • the invention relates to a device for the successive application of two layers of liquid or pasty media on one side of a running material web, in particular made of paper or cardboard, according to the preamble of claim 1.
  • Such a device is known for example from the published patent application DE 43 02 437 A1.
  • a first layer of a coating medium is applied to one side of a running material web with a first application device, and the material web is then passed through an arrangement of dryer devices.
  • a second layer of a coating medium is then applied to the side of the material web previously provided with the first layer using a second application device, and the material web is then again passed through various drying devices.
  • the two application devices are designed such that an application nozzle applies the coating medium to the roller surface of an application roller and the coating medium in a nip is transferred from the roll surface of the applicator roll to the material web.
  • each of the two application devices the roller nip is formed between an application roller and a counter roller, and the material web is in each case passed through the roller nip.
  • each of the two counter-rollers is also assigned a nozzle applicator, so that the counter-rollers themselves also act as application rollers and the back of the web of the running material web can also be provided with two layers of a coating medium.
  • the invention is therefore based on the object of providing a device for the successive application of two layers of liquid or pasty media on one side of a running material web, which can be designed to be comparatively compact and space-saving.
  • the counter roll is initially assigned a first indirect application device, which comprises a rotating application roller and a first application unit.
  • the first application unit is assigned to the roller surface of the application roller in order to apply a first liquid or pasty medium thereon. From the roller surface of the application roller, the first liquid or pasty medium is then in a roller gap which is formed between the counter roller and the application roller and through which the current one Material web is passed, transferred to one side of the material web.
  • a second application device is assigned to the same counter-roller in the direction of travel of the material web after the first application device, which has a second layer of a second liquid or pasty medium on the same side of the material web that was previously provided with the first layer of a first liquid or pasty medium applies.
  • the running material web is passed between the second application device and the counter roller.
  • a drying device is assigned to the side of the material web previously provided with the first layer of the first liquid or pasty medium between the nip of the first application device and the second application device.
  • This arrangement according to the invention results in a very compact and space-saving system, since both application devices for applying the two layers to one side of the material web are assigned to one and the same counter roller and the drying device for intermediate drying of the first applied layer can also be arranged in the vicinity of the counter roller .
  • the first and the second liquid or pasty medium applied can be of different consistency or of the same consistency.
  • the second application device is designed as an indirect application device and comprises a second rotating application roller and a second application unit.
  • the second applicator roll forms a second roll nip with the counter roll, through which the running material web is passed.
  • the second application unit is assigned to the roller surface of the second application roller in order to apply the second liquid or pasty medium thereon.
  • the second liquid or pasty medium becomes analogous to the first Transfer the application device from the roller surface of the second application roller in the second roller gap to the running material web.
  • the second application device is designed as a direct application device and comprises a second application unit.
  • the second application unit is assigned directly to the running material web along an application zone in order to apply the second liquid or pasty medium thereon.
  • the running material web is supported along this application zone on the roll surface of the counter roll.
  • Indirect application device is to be understood such that a liquid or pasty medium to be applied is first applied by an application unit to the roller surface of an application roller and from there is transferred in a roller gap to one side of the running material web.
  • Direct application device is to be understood in such a way that the liquid or pasty medium to be applied is applied directly from one application unit, that is to say without the interposition of an application roller, to one side of the running material web.
  • roller gap is to be understood in such a way that it can be both a roller gap in which the medium to be applied is pressed into the running material web by the roller surface of the application roller, and a roller gap as it is in a so-called " Reverse Roll Coater ".
  • the application roller rotates in the opposite direction to the counter roller
  • the application roller rotates in the same direction as the counter roller.
  • the medium to be applied is first applied to the surface of the application roller and from there in the roller gap, in which the surfaces of the application roller and the counter-roller run in opposite directions run, transferred to the running material web.
  • the medium to be applied is not pressed into the running material web in the nip, but is only transferred to the side to be coated.
  • a third applicator is assigned to the roll surface of the counter roll on the feed side in front of the roll gap of the first application device, in order to apply a third liquid or pasty medium to the roll surface of the counter roll.
  • the back of the material web that is to say the web side facing away from the first and the second application device, can also be coated with a liquid or pasty medium.
  • the counter roller functions as the application roller for the rear side of the web and the application roller of the first application device forms the corresponding counter roller in order to transfer the third liquid or pasty medium in the nip from the surface of the counter roller to the rear side of the material web.
  • a further embodiment consists in guiding the running material web between the first application device and the second application device over at least one deflection roller.
  • the material web does not run between the first application device and the second application device on the roller surface of the counter-roller, but is lifted off the counter-roller after the first application device, is guided over the at least one deflection roller and then guided again to the second application device to pass between the second applicator and the surface of the counter roll.
  • This path guidance over at least one deflection roller creates a space between the deflection roller and the roller surface of the counter-roller, which, as will be explained below, can be used for further devices.
  • a second drying device is provided, which is assigned to the back of the web of the running material web previously provided with a layer of the third liquid or pasty medium after the roll nip of the first application device.
  • This second drying device is therefore arranged in the intermediate space that results between the rear side of the running material web, which is guided over at least one deflection roller, and the roller surface of the counter-roller.
  • the layer previously applied to the back of the web by the third application device can be dried.
  • a further layer of a liquid or pasty medium can then be applied to the back of the web.
  • a further advantageous embodiment consists of providing two deflection rollers for guiding the material web between the first and the second application device, and that drying device which is assigned to the web side provided with the first layer by the first application device, on a section of the running material web between the two deflection rollers to arrange and to arrange the second drying device, which is assigned to the back of the web, in the direction of travel of the material web after the second deflection roller.
  • the two drying devices mentioned each comprise at least one dryer.
  • the web of the running material web between the two deflecting rollers is essentially vertical and after the second deflecting roller up to the second application device is essentially horizontal.
  • a fourth application unit is assigned to the roll surface of the counter roll on the feed side in front of the second application device in order to apply a fourth liquid or pasty medium to the roll surface of the counter roll.
  • This fourth application unit is therefore also arranged in the intermediate space which results between the web rear side, which is guided over at least one deflection roller, and the roller surface of the counter-roller. If the aforementioned second drying device is provided, the fourth application unit can be arranged, for example, above this second drying device or in an intermediate space between the second drying device and the roll surface of the counter roll.
  • the second application unit is designed as an indirect application unit, so that the application roller of the second application unit then - as in the situation with the third application unit - acts as a counter roller.
  • the counter roll to which the fourth application unit is assigned serves as the application roller for the fourth liquid or pasty medium, and the medium, after it has been applied by the fourth application unit to the roller surface of the counter roller, from this roller surface in the nip between the Application roller of the second application device and the counter roller is formed, pressed into the back of the running web of material.
  • This back of the web can, as explained above, already be provided with a layer of a third liquid or pasty medium and be intermediate dried on the second drying device.
  • the third and fourth liquid or pasty media can have the same or a different consistency, and if necessary the consistency of these media can also match the consistency of the first or second medium.
  • the second layer is provided by the second application device At least one dryer is assigned to the web side of the running material web, in the direction of travel of the material web after the second application device.
  • the second layer can be dried here.
  • at least one dryer can be assigned to the back of the web in the direction of travel of the material web after the second application device.
  • the dryers of the two drying devices which are arranged between the first and the second application device, and the dryers, which are connected downstream of the second application device, are designed as infrared dryers. This results in a very compact and space-saving construction. If required, however, individual or all of the dryers mentioned can also be of a different dryer type.
  • the first and / or second and / or third and / or fourth application unit is designed as a ready-dose application unit.
  • individual or all of the four application units can be designed as ready-dose application units.
  • the specific design of the order works naturally also depends on whether the second order device is to be implemented as a direct or indirect order device.
  • the finished metering applicators are designed as doctor element pressure chamber applicators or doctor element sump applicators.
  • the medium While in the former type the medium is applied from a pressure chamber via a doctor element, in the latter type the medium is applied from a sump with a free liquid surface via a doctor element.
  • the specific selection of the suitable commissioned work also depends on the geometric position with respect to the associated counter roll or applicator roll.
  • the doctor element of the doctor element applicator is a profiled or smooth roller doctor, a doctor bar or a doctor blade.
  • the first and / or second and / or third and / or fourth application unit each include a pre-metering device and a downstream final metering device.
  • the pre-metering device can be designed as a scoop roller, doctor element pressure chamber applicator unit or free jet nozzle applicator unit or in a similar manner.
  • the doctor element is a profiled or smooth roller doctor blade, a doctor bar or a doctor blade.
  • the final metering device comprises a doctor blade, a doctor bar or a smooth roller doctor.
  • the second application device can also be designed as a "reverse roll coater".
  • the second application roller then rotates in the same direction as the counter roller and the second application roller is then assigned, for example, a container with the medium to be applied, from which the application roller scoops out the medium.
  • a final metering device can then be connected downstream of the second application roller.
  • Each of the maximum of four commissioned works can therefore be selected individually from the known types of commissioned work according to the specific circumstances, as explained above.
  • other comparable application works can also be used.
  • a first embodiment of the device according to the invention is shown in a simplified, schematic representation.
  • a first counter roller 1 rotating in the direction of the arrow is assigned a first applicator roller 2 and a second applicator roller 4. Both application rollers 2 and 4 each rotate in opposite directions to the counter roller 1.
  • a running material web 6, e.g. made of paper, cardboard or a textile material, is first deflected via a deflection roller 20 and is then passed through a nip which is formed between the roller surface 1A of the counter-roller 1 and the roller surface 2A of the first application roller 2.
  • a first application unit 3 is assigned to the roller surface 2A of the first application roller 2. In the example, this first application unit 3 is only indicated schematically as a doctor element unit.
  • the first application unit 3 forms, together with the first application roller 2, a first indirect application device.
  • a layer of a first liquid or pasty medium is applied from the applicator unit 3 to the roller surface 2A of the applicator roller 2 and from there this layer is transferred in the nip, which is formed between the applicator roller 2 and the counter roller 1, to the web side 6A of the running material web .
  • the roller nip acts as a press nip in order to press the coating medium into the material web 6.
  • the material web After leaving the first nip, the material web runs over a deflection roller 9, as indicated by the directional arrow. In this way, the Material web 6 is guided away from the counter roller 1 after the first nip.
  • the material web runs essentially horizontally between the first nip and the deflection roller 9 and is deflected by the deflection roller 9 in a substantially vertical downward direction. Subsequently, the material web 6 is deflected again in a substantially horizontal running direction via a deflection roller 10.
  • a dryer 7, for example an infrared dryer is assigned to the web side 6A of the material web.
  • This dryer 7 serves for the intermediate drying of the first layer of a first liquid or pasty medium previously applied by the first application device 2, 3 to the web side 6A.
  • a further dryer 8 for example an infrared dryer, is assigned to the back of the web 6B of the material web 6 in the running direction after the deflection roller 10.
  • This dryer 8 could also be omitted in the first exemplary embodiment, but it has an intermediate drying function for the back of the web 6B for the further exemplary embodiments explained below.
  • the material web 6 runs into a second nip, which is formed between the roller surface 4A of the second application roller 4 and the roller surface 1A of the counter roller 1.
  • a second applicator 5 is assigned to the roller surface 4A of the second applicator roller 4, which is indicated only schematically as a doctor element applicator.
  • the application unit 5 applies a second layer of a second liquid or pasty medium to the roller surface 4A of the second application roller 4. From there, the second layer is transferred to the web side 6A of the material web 6 in the second nip, which here acts as a press nip like the first nip.
  • the material web 6 After leaving the second nip, the material web 6 is still deflected on the roller surface 1A of the counter-roller 1 and then runs diagonally upwards. The material web 6 is then deflected again by a deflection roller 21 and fed to a further device (not shown) for subsequent treatment of the material web.
  • a further device not shown
  • the back of the web 6B is assigned a further dryer 14, for example an infrared dryer, which, like the dryer 8, can be omitted in the first embodiment. This dryer only has the function of post-drying the back of the web 6B in the further exemplary embodiments.
  • the system shown is very compact and the material web is very space-saving.
  • the essentially vertical web guidance of the material web 6 between the two deflection rollers 9 and 10 and the web guidance under the dryer 8 minimize the risk of fire in the event of a web break. Because the material web would then fall through in front of the dryer 7 and drop down from the dryer 8 without the material web being able to rest on one of the hot dryers.
  • a first layer of a coating medium, a so-called primer, and - after intermediate drying by the dryer 7 - a second layer of a coating medium, a so-called top coat, can be applied to the same web side 6A of the material web.
  • the application units 3 and 5 can be selected from application units known per se for applying a layer to an application roller.
  • the material web between the two nips could also be guided directly on the roller surface 1A of the counter-roller 1. This would make the system even more compact and the two deflection rollers 9 and 10 and the dryer 8 would be omitted.
  • the dryer 7 could then - in Fig. 1 towards the left - be moved closer to the counter roller 1.
  • the roller surface 1A of the counter-roller 1 is assigned a third applicator unit 11.
  • This third application unit is indicated schematically as a doctor element unit.
  • the third applicator 11 is arranged on the inlet side in front of the first nip and applies a layer of a third liquid or pasty medium to the roller surface 1A. From there, the medium in the first nip, which is formed between the application roller 2 and the counter-roller 1, is transferred to the back of the web 6B of the material web and pressed.
  • the counter roller 1 thus serves on the one hand as a counter roller for the first application roller 2 and on the other hand as an application roller for coating the back of the web 6B, the first application roller 2 acting as a counter roller.
  • a scraper element 16 which is assigned to the roller surface 1A of the counter-roller 1, is provided in the space which is provided on the back of the web 6B between the two deflection rollers 9 and 10 and the section of the roller surface 1A between the two roller nips. Remains of the third coating medium, which has been applied by the third application unit 11, are stripped off there. Similar scraper elements can be provided on the roller surfaces 2A and 4A of the application rollers 2 and 4 on the inlet side in front of the application units 3 and 5, respectively.
  • the third application unit thus enables the application of a layer of a coating medium, a so-called base coat, on the back of the web 6B, in addition to the two layers applied one after the other on the web side 6A.
  • the web guidance of the material web 6 after the second nip, which is formed between the counter-roller 1 and the application roller 4, takes place in this example somewhat differently from the first exemplary embodiment.
  • the material web 6 is continued essentially horizontally and then deflected upwards essentially vertically by a deflecting roller 22.
  • the material web 6 is immediately led away from the roller surface 1A of the counter-roller 1 after the second nip and, as can clearly be seen in FIG. 2, the space required between the material web and the counter-roller results in order to have the third coating unit there 11 to arrange.
  • the web side 6A of the material web 6 is a drying device in the form of two dryers 15, e.g. Infrared dryer, assigned. These dryers 15 are used to dry the second layer previously applied by the second application device 4, 5.
  • the dryer 8 is now used for predrying the layer previously applied by the third applicator 11 to the back of the web 6B.
  • the web guide of the material web 6 takes place in the same way as in the second exemplary embodiment in FIG. 2, so that reference is made to the relevant statements.
  • an application unit 12 is now provided in a fourth order unit position.
  • the application unit 12 is indicated schematically as a doctor element unit. It is the roll surface 1A of the counter roll 1 in the section between the first and the second roll nip assigned.
  • the space resulting between the two deflection rollers 9 and 10 and the counter roller 1 on the back of the web 6B is now used to accommodate a further application unit 12.
  • a scraper element 17 is now provided on the outlet side after the second roll nip and is assigned to the roll surface 1A.
  • the application unit 12 serves to apply a layer to the back of the web 6B.
  • the counter roller 1 is used by the application unit 12 as the application roller and the applied layer is pressed into the material web 6 in the second nip.
  • the applicator roller 4 also functions as a counter roller.
  • the dryer 8 can be omitted, while in addition the dryer 14 shown in FIG. 1 can be assigned to the back of the web 6B after the deflecting roller 22 in order to dry the layer previously applied by the application unit 12.
  • the third application unit 11 is used to apply a layer of a third liquid or pasty medium to the back of the web 6B, that is to say to apply a primer to the back of the web. This primer is then dried as it passes through the dryer 8.
  • the fourth application unit 12 is used to apply a layer of a fourth liquid or pasty medium to the back of the web 6B.
  • a top coat is applied to the back of the web 6B.
  • a dryer for the back of the web 6B could also be provided in the fourth exemplary embodiment in FIG. 4. Such a dryer could either be before Deflection roller 22 or be provided in the subsequent web running section. Such a dryer would then correspond to the dryer 14 as indicated in FIG. 1.
  • a primer and a top coat of coating media can therefore be applied simultaneously to both web sides 6A, 6B using a very compact and space-saving system.
  • the four liquid or pasty media that are applied by the four application units 3, 5, 11 and 12 can each have a different consistency or at least partially the same consistency.
  • the second application device is in each case an indirect application device 4, 5.
  • an application unit 5 is provided in each case, which indirectly applies the liquid or pasty medium to be applied to the material web by means of an application roller 6 applies.
  • a further indirect application device could consist, for example, of providing an application roller which rotates in the same direction as the counter roller 1 instead of the application roller 4 and forms a nip with the latter. In the nip, the roll surface of the application roll would then run in the opposite direction to the roll surface 1A of the counter roll 1.
  • This application roller can then be assigned a scoop roller as an application unit instead of the doctor element application unit shown in the previous exemplary embodiments, which scoops the medium to be applied from a container. In this arrangement described, the medium to be applied is scooped from the roller surface of the scoop roller, transferred to the roller surface of the application roller rotating in the opposite direction to the scoop roller, and from the surface of the application roller in the opposite direction to the associated web side of the material web transfer.
  • Such an indirect application device (not shown) is referred to as a "reverse roll coater" since the roller surface of the application roller in the nip runs in the opposite direction to the roller surface of the counter roller.
  • a direct application device is provided as the second application device.
  • the application unit 5 carries the medium to be applied directly, i.e. without interposing an application roller, on the running material web 6.
  • the counter roller 1 is assigned a finished metering unit 5 as the second application device.
  • the material web 6 is supported on the surface 1A of the counter roller 1.
  • the finished dosing applicator which applies the medium to be applied by means of a doctor element, is a so-called "short dwell-time applicator" applicator.
  • dryer 14 and dryer 8 could be omitted.
  • the two deflecting rollers 9 and 10 could be omitted and the dryer 7 could be moved closer to the counter roller 1, the material web 6 then being guided between the first application roller 2 and the application unit 5 on the roller surface 1A of the counter roller 1.
  • the sixth exemplary embodiment shown in FIG. 6 corresponds in its basic structure to the exemplary embodiment of FIG. 5.
  • an application unit is now provided, which is subdivided into a pre-metering unit 5A and a final metering unit 5B.
  • the final metering device 5B is the pre-metering device 5A in FIG Seen downstream of the web running direction, and both devices 5A, 5B are assigned to the counter roller 1.
  • the material web 6 is guided in the area of the preliminary and final metering devices 5A, 5B along an application zone 13 on the roller surface 1A of the counter roller 1.
  • the pre-metering device 5A is indicated in the example as a doctor element pressure chamber applicator that applies the medium to be applied directly from a pressure chamber to the material web via the doctor element, for example a doctor blade.
  • a scraper blade of the final metering device 5B removes the excess of the previously applied layer from the material web.
  • the doctor element pressure chamber applicator 5A in FIG. 6 is replaced by a free-jet nozzle applicator 5A.
  • the medium to be applied is applied from a nozzle in a free jet to the material web 6 without contact.
  • the doctor element pressure chamber applicator 5A in Fig. 6 is replaced by a so-called "bent-blade" pressure chamber applicator with a bent doctor bed.
  • the doctor element pressure chamber applicator in FIG. 6 is replaced by a scoop roller applicator 5A.
  • a scoop roller 18 scoops the liquid or pasty medium to be applied from a reservoir 19 and then applies the medium with its roller surface directly onto the material web 6.
  • a third applicator unit 11 can additionally be provided on the inlet side in front of the first nip, which is formed between the applicator roller 2 and the counter roller 1.
  • the shape and function of such a third applicator unit 11 is analogous to that of the second exemplary embodiment in FIG. 2 or the fourth exemplary embodiment in FIG. 4.
  • a base line for the rear side 6B of the web can then be applied be at least predried by the dryer 8. Further drying can then take place through the dryer 14.

Landscapes

  • Absorbent Articles And Supports Therefor (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
EP97105890A 1996-06-13 1997-04-10 Dispositif pour l'application de deux couches dans l'ordre successif de médias liquides ou pâteux sur un cÔté d'une bande de material en marche Withdrawn EP0812958A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29610395U DE29610395U1 (de) 1996-06-13 1996-06-13 Vorrichtung zum aufeinanderfolgenden Auftragen von zwei Schichten von flüssigen oder pastösen Medien auf eine Seite einer laufenden Materialbahn
DE29610395U 1996-06-13

Publications (1)

Publication Number Publication Date
EP0812958A1 true EP0812958A1 (fr) 1997-12-17

Family

ID=8025154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105890A Withdrawn EP0812958A1 (fr) 1996-06-13 1997-04-10 Dispositif pour l'application de deux couches dans l'ordre successif de médias liquides ou pâteux sur un cÔté d'une bande de material en marche

Country Status (3)

Country Link
US (1) US5944898A (fr)
EP (1) EP0812958A1 (fr)
DE (1) DE29610395U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19914967A1 (de) * 1999-04-01 2000-10-05 Voith Sulzer Papiertech Patent Auftragseinrichtung

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29714193U1 (de) * 1997-08-08 1997-10-16 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zur Beschichtung einer laufenden Warenbahn
DE102006033104A1 (de) * 2006-07-18 2008-01-24 Heidelberger Druckmaschinen Ag Bogenoffsetdruckmaschine
US9266144B2 (en) * 2009-12-22 2016-02-23 3M Innovative Properties Company Method and apparatus for producing a non-uniform coating on a substrate
WO2017096403A1 (fr) * 2015-12-03 2017-06-08 Kinney Ramsey Système de suture revêtue permettant d'améliorer la réparation et la reconstruction de tissu mou
TWI740640B (zh) 2020-09-11 2021-09-21 全利機械股份有限公司 纖維製品的液體塗佈機台

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645201A (en) * 1951-04-12 1953-07-14 Combined Locks Paper Co Apparatus for coating paper
DE3922535A1 (de) * 1988-07-27 1990-02-01 Voith Gmbh J M Auftragseinrichtung zur beschichtung laufender warenbahnen sowie verfahren zur beschichtung
EP0438743A1 (fr) * 1990-01-26 1991-07-31 J.M. Voith GmbH Procédé d'enduction et dispositif pour enduire une bande de papier ou de carton en mouvement
WO1992000419A1 (fr) * 1990-06-26 1992-01-09 Oy Keskuslaboratorio - Centrallaboratorium Ab Procede et moyen de regulation d'une operation de couchage comprenant un raclage
DE4302437A1 (en) * 1993-01-29 1993-08-12 Voith Gmbh J M Paper web coating for low strength recycled paper material - by applying part of coating vol. at station with drying between stations, for strengthening

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308751A (en) * 1963-07-18 1967-03-14 Dainippon Printing Co Ltd Means for adhering a web to an impression surface during multicolor printing
US3611919A (en) * 1968-12-20 1971-10-12 Kimberly Clark Co Method and apparatus for multiple embossing of continuous webs
SU620280A1 (ru) * 1976-11-23 1978-08-25 Предприятие П/Я В-8406 Устройство дл двухстороннего нанесени покрытий на рулонные материалы
JPS5588878A (en) * 1978-12-27 1980-07-04 Mitsubishi Paper Mills Ltd Method and apparatus for finishing coated paper
FI75199C (fi) * 1986-04-30 1988-05-09 Yhtyneet Paperitehtaat Oy Belagt papper, kartong eller dylikt samt foerfarande och anlaeggning foer tillverkning av detsamma.
US4898752A (en) * 1988-03-30 1990-02-06 Westvaco Corporation Method for making coated and printed packaging material on a printing press
US5340611A (en) * 1989-07-25 1994-08-23 J. M. Voith Gmbh Process for coating travelling webs
DE4013776A1 (de) * 1990-04-28 1991-10-31 Pagendarm Gmbh Verfahren und vorrichtung zum aufbringen einer beschichtung auf eine substratbahn
DE9100291U1 (de) * 1991-01-11 1991-04-04 Jagenberg AG, 40476 Düsseldorf Vorrichtung zum beidseitigen Beschichten einer Materialbahn
EP0784120A3 (fr) * 1993-01-29 2004-04-14 Voith Paper Patent GmbH Procédé et dispositif pour l'enduction d'une bande de papier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645201A (en) * 1951-04-12 1953-07-14 Combined Locks Paper Co Apparatus for coating paper
DE3922535A1 (de) * 1988-07-27 1990-02-01 Voith Gmbh J M Auftragseinrichtung zur beschichtung laufender warenbahnen sowie verfahren zur beschichtung
EP0438743A1 (fr) * 1990-01-26 1991-07-31 J.M. Voith GmbH Procédé d'enduction et dispositif pour enduire une bande de papier ou de carton en mouvement
WO1992000419A1 (fr) * 1990-06-26 1992-01-09 Oy Keskuslaboratorio - Centrallaboratorium Ab Procede et moyen de regulation d'une operation de couchage comprenant un raclage
DE4302437A1 (en) * 1993-01-29 1993-08-12 Voith Gmbh J M Paper web coating for low strength recycled paper material - by applying part of coating vol. at station with drying between stations, for strengthening

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19914967A1 (de) * 1999-04-01 2000-10-05 Voith Sulzer Papiertech Patent Auftragseinrichtung

Also Published As

Publication number Publication date
DE29610395U1 (de) 1996-08-22
US5944898A (en) 1999-08-31

Similar Documents

Publication Publication Date Title
EP1964971A2 (fr) Procédé de fabrication d'une bande de matière fibreuse revêtue, en particulier de papier ou de carton
DE4414949A1 (de) Vorrichtung zum Auftragen von mindestens einem flüssigen Medium auf eine laufende Materialbahn
EP0791687B1 (fr) Procédé et dispositif pour enduire une substance liquide ou pâteuse sur une bande en mouvement
EP1020560A2 (fr) Procédé et dispositif d'imprégnation et de couchage de papier
EP3842591A1 (fr) Dispositif d'application d'un milieu d'application
DE19634448C2 (de) Verfahren und Vorrichtung zum Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
DE19637164A1 (de) Verfahren und Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
DE3440634A1 (de) Einrichtung zur beidseitigen beschichtung laufender warenbahnen
DE19702605A1 (de) Vorrichtung und Verfahren zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
EP0565979A1 (fr) Dispositif d'enduction pour des bandes de papier en carton
EP0609483B1 (fr) Procédé et dispositif pour l'enduction d'une bande de papier
EP0812958A1 (fr) Dispositif pour l'application de deux couches dans l'ordre successif de médias liquides ou pâteux sur un cÔté d'une bande de material en marche
DE4302435A1 (en) Paper web coating appts. - has smoother against side of web in free path after leaving gap between applicator rollers
EP0812957A1 (fr) Procédé et dispositif pour le couchage d'une bande mouvante
DE19827712B4 (de) Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Auftragsmediums auf eine laufende Materialbahn
DE102009008589B4 (de) Verfahren und Anordnung zur Herstellung von mehrschichtig gestrichenem Papier
DE3122605A1 (de) Verfahren und vorrichtung zum beidseitigen beschichten einer sich vorwaerts bewegenden materialbahn
DE19743246A1 (de) Kombinations-Auftragsvorrichtung
DE19914967A1 (de) Auftragseinrichtung
DE19960772A1 (de) Auftragsverfahren
EP0949380A2 (fr) Dispositif pour enduire directement ou indirectement une ou deux faces d'une surface en mouvement avec un matériau fluide ou pâteux
DE10024295B4 (de) Zylinderanordnung einer Maschine zur Herstellung einer Materialbahn
DE29714193U1 (de) Vorrichtung zur Beschichtung einer laufenden Warenbahn
DE19821820A1 (de) Vorrichtung zur Oberflächenbehandlung einer laufenden Materialbahn, insbesondere aus Karton
EP1496155A2 (fr) Dispositif pour appliquer directement ou indirectement une suspension liquide ou pateuse sur une bande de papier ou carton

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FI SE

17P Request for examination filed

Effective date: 19980617

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH SULZER PAPIERTECHNIK PATENT GMBH

17Q First examination report despatched

Effective date: 19991007

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20000218