EP2145694A2 - Dispositif de revêtement par rideau - Google Patents

Dispositif de revêtement par rideau Download PDF

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Publication number
EP2145694A2
EP2145694A2 EP09163199A EP09163199A EP2145694A2 EP 2145694 A2 EP2145694 A2 EP 2145694A2 EP 09163199 A EP09163199 A EP 09163199A EP 09163199 A EP09163199 A EP 09163199A EP 2145694 A2 EP2145694 A2 EP 2145694A2
Authority
EP
European Patent Office
Prior art keywords
curtain
width
format
application medium
fibrous web
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Withdrawn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
EP09163199A
Other languages
German (de)
English (en)
Other versions
EP2145694A3 (fr
Inventor
Dr. Benjamin Méndez-Gallon
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 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
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP2145694A2 publication Critical patent/EP2145694A2/fr
Publication of EP2145694A3 publication Critical patent/EP2145694A3/fr
Withdrawn legal-status Critical Current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
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/007—Slide-hopper coaters, i.e. apparatus in which the liquid or other fluent material flows freely on an inclined surface before contacting the work
    • B05C5/008—Slide-hopper curtain coaters
    • 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

Definitions

  • the invention relates to a curtain applicator for coating a running paper, cardboard or other fibrous web with at least one liquid to pasty application medium in the form of a single or multi-layer curtain, which essentially follows the gravity falling on the fibrous web, with a above the Fibrous web arranged curtain applicator head in the form of a matched to the width of the fibrous web Gleit harshdüse, with at least one across the width of the Gleit harshdüse reaching, each from a located in the interior of the sliding layer application chamber exit slot for the relevant order to be dispensed coating medium layer, which then the single or multi-layered Curtain forms,
  • a generic device is for example from the WO 03/049871 known.
  • an application head is disclosed, with the multiple application media or multiple layers of an application medium can be issued.
  • This embodiment of a curtain commissioned work is among other things from the EP-A1-1 255 615 known and is referred to in professional circles as "Slide Die”, ie "Gleit harshdüse”.
  • This so-called Gleit harshdüse usually contains a plurality of application medium chambers, from which the medium passes via a feed gap, which in turn merges into a slot-shaped outlet nozzle or outlet slot, on a sliding surface of the Gleit Mrsdüse.
  • the application medium emerging from the outlet slots arranged parallel to one another in succession overlaps one another.
  • this multilayer dissolves and falls down as a multilayer curtain either initially on an intermediate guide plate or directly on the substrate to be coated or the surface of the moving fibrous web.
  • format delimiters are fittings that are embedded in the respective distribution channel or the exit slot of the nozzle and thus reduce the exit slot in width according to the desired format width.
  • the width of the at least one coating medium layer or a desired format width of the coating is adjustable.
  • the Formatbe dictionary is simply constructed only box-like with rectangular cross-section.
  • the side walls of the Formatbegrenzers tightly enclose the to be closed or covered area of the exit slot.
  • the bottom of the format limiter has an opening. In this opening an adjustable aperture is arranged, which is very useful for partial
  • a very advantageous embodiment of the Formatbegrenzers is that it is designed as a container and thereby absorb the dispensed outside the desired format width from the respective exit slot of the Gleit Anlagendüse application medium and can dissipate separately. This offers the advantage of a sorted recovery of the individual media, which is particularly important in multi-layer order.
  • This Formatbegrenzer can advantageously be associated with a suction device, whereby the removal of the absorbed and discharged by him, excess application medium is supported. If desired, the strength of the suction can be controlled or regulated.
  • the collected application medium is discharged laterally or frontally. Alternatively, it is also possible to dissipate the collected application medium counter to the direction of flow of the application medium layer emerging from the at least one exit slot (or in each case from a plurality of slots).
  • the single-layer or multi-layered curtain is associated with known curtain holders or edge guiding elements which guide the curtain at its lateral edges, at least over part of its fall path between a trailing edge of the sliding layer nozzle and the surface of the fibrous web.
  • the Formatbegrenzer can also be made of metal, but its the Gleit Mrsdüse or the area mentioned in addition to the exit slot contacting surfaces are provided with plastic pads. As a result, damage to the nozzle surface can be avoided and the tightness guaranteed the connection.
  • FIG. 1 is a curtain applicator 1 for multiple coating a running paper, cardboard or other fibrous web 2 with, for example, three liquid to pasty application media M1, M2, M3 shown.
  • This commissioned work is, for example, online within a fibrous web manufacturing and / or finishing machine arranged and includes some other not shown here units, such as gutters, air boundary layer control devices, measuring equipment, supply lines, etc. above the fibrous web 2 and spaced from her curtain Application head 3.
  • This application head 3 is designed as a sliding layer nozzle 4 and executed machine width.
  • the Gleit harshdüse 4 has for said multi-layer order, ie for each application medium M1 to Mn its own application medium chamber or more chambers 5.1, 5.2, 5.3 with feed gap, all or on the surface 6 of the Gleit Anlagense 4 respectively in exit slots 7.1, 7.2, 7.3 pass for each one possible to be dispensed coating medium layer.
  • the outlet slots 7.1 to 7.3 are arranged parallel to one another and in the direction of movement L of the fibrous web 2 in succession.
  • the sliding layer nozzle 4 also has on its surface 6 a downwardly inclined and curved sliding surface 8. The sliding surface 8 merges into a detachment or tear-off edge 9, which points in the direction of the fibrous web 2 to be coated.
  • tear-off edge - or rather tear line 9 - which is indeed machine width, as the entire applicator head 3, dissolves the previously formed on the sliding surface 8 coating medium layer (or the shown superimposed coating medium layers for multi-layer application) from and forms or Form a single-layer or as shown in the example, a multilayer curtain 10 from.
  • the here two-layer curtain 10 falls from the tear line 9 substantially following the gravity, down on the fibrous web 2 and lies down on the surface 2a as a coating layer AS from.
  • These edge guides 11 are constructed strip-like and serve to guide the multilayer curtain 10 at least over a portion of its fall path between the tear line 9 and the surface 2a of the fibrous web 2 at its lateral edges 10a and 10b.
  • the edge guides 11 are also adjustable in the width direction of the curtain 10, as the double arrow V shows.
  • a respective format limiter is movable in the direction of the opposite side edge 13 is arranged, with which the outlet slot in question (here only the slot 7.2) is partially closable or coverable such that the width of the at least one coating medium layer, the desired format width FB is reached.
  • the format limiter 13 has a box-like and hollow construction and can therefore also be designated as a delimiting container. Since the surface 6 of the sliding layer nozzle 4 has an inclination of between 5 and 30 °, the fluid flowing out of the outlet slots first accumulates, ie that part of the exiting application medium (in this case from the medium M2) which is blocked off by the format restrictors 13 at the bottom, ie the bottom 13.2 of the format delimiter. Therefore, the level of the application medium now rises through a bottom opening 13.3 in the cavity of the format limiter 13 until an overflow opening 13.4 is reached. This excess medium now passes through a connected discharge line 14 to the outside.
  • a not shown suction device 15 may be connected to accelerate the removal of the medium and simplify.
  • the strength of the extraction can be controlled or regulated.
  • the collected application medium here medium M2
  • the collected medium can be discharged laterally or frontally.
  • the collected medium can be discharged alternately against the flow direction, as shown by arrow A2.
  • the removal direction of the discharge line 14 can each be different.
  • FIG. 2 the Formatbe dictionary 13 is shown more clearly.
  • the side walls 13.1 of the Formatbeskyrs 13 enclose the area to be closed or covered at the edges 7a and 7b of the respective exit slot (here, for example slot 7.2).
  • the bottom 13.2 of the format limiter 13 has, as stated, an opening 13.3 with a width B on. For partial opening and closing or closing the exit slot 7.2 is inserted into this opening 13.3 aperture 16.
  • This aperture 16 is adjustable, the adjustment direction is indicated by double arrow V.
  • the Formatbe dictionary 13 is made of a plastic.

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
EP09163199A 2008-07-15 2009-06-19 Dispositif de revêtement par rideau Withdrawn EP2145694A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810040406 DE102008040406A1 (de) 2008-07-15 2008-07-15 Vorhang-Auftragswerk

Publications (2)

Publication Number Publication Date
EP2145694A2 true EP2145694A2 (fr) 2010-01-20
EP2145694A3 EP2145694A3 (fr) 2010-03-31

Family

ID=41203728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09163199A Withdrawn EP2145694A3 (fr) 2008-07-15 2009-06-19 Dispositif de revêtement par rideau

Country Status (2)

Country Link
EP (1) EP2145694A3 (fr)
DE (1) DE102008040406A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1255615A1 (fr) 2000-01-26 2002-11-13 Tetra Laval Holdings & Finance S.A. Procede de fabrication d'un lamine d'emballage multicouche et lamine d'emballage obtenu selon ce procede
WO2003049871A1 (fr) 2001-12-13 2003-06-19 Dow Global Technologies Inc. Procede et appareil de couchage par voile

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3903080B2 (ja) * 1997-09-26 2007-04-11 富士フイルム株式会社 スライドビード塗布方法及び装置、並びに多層塗布方法及び装置
DE10316999A1 (de) * 2003-04-11 2004-10-28 Bachofen & Meier Ag Vorrichtung zum Beschichten einer laufenden Materialbahn
FI117176B (fi) * 2005-01-27 2006-07-14 Metso Paper Inc Laite tasolta syöttävän verhopäällystimen applikointileveyden säätämiseksi
FI118925B (fi) * 2006-10-03 2008-05-15 Metso Paper Inc Menetelmä ja järjestely kuiturainan verhopäällystyksen yhteydessä

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1255615A1 (fr) 2000-01-26 2002-11-13 Tetra Laval Holdings & Finance S.A. Procede de fabrication d'un lamine d'emballage multicouche et lamine d'emballage obtenu selon ce procede
WO2003049871A1 (fr) 2001-12-13 2003-06-19 Dow Global Technologies Inc. Procede et appareil de couchage par voile

Also Published As

Publication number Publication date
EP2145694A3 (fr) 2010-03-31
DE102008040406A1 (de) 2010-01-21

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