EP2213380B1 - Outil d'application et procédé de revêtement en forme de bande d'un support en forme de bande - Google Patents

Outil d'application et procédé de revêtement en forme de bande d'un support en forme de bande Download PDF

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Publication number
EP2213380B1
EP2213380B1 EP09151119A EP09151119A EP2213380B1 EP 2213380 B1 EP2213380 B1 EP 2213380B1 EP 09151119 A EP09151119 A EP 09151119A EP 09151119 A EP09151119 A EP 09151119A EP 2213380 B1 EP2213380 B1 EP 2213380B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
slot
inserts
application
carrier
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.)
Not-in-force
Application number
EP09151119A
Other languages
German (de)
English (en)
Other versions
EP2213380A1 (fr
Inventor
Christoph Frigge
Thomas Zakrzowski
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.)
Coroplast Fritz Mueller GmbH and Co KG
Original Assignee
Coroplast Fritz Mueller GmbH and Co KG
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 Coroplast Fritz Mueller GmbH and Co KG filed Critical Coroplast Fritz Mueller GmbH and Co KG
Priority to AT09151119T priority Critical patent/ATE541647T1/de
Priority to EP09151119A priority patent/EP2213380B1/fr
Priority to PL09151119T priority patent/PL2213380T3/pl
Publication of EP2213380A1 publication Critical patent/EP2213380A1/fr
Application granted granted Critical
Publication of EP2213380B1 publication Critical patent/EP2213380B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated

Definitions

  • the invention relates to a coating tool for strip-like coating of a web-shaped carrier with a flowable coating composition, comprising a slot nozzle having a first lip and a second lip, between which a nozzle slot is formed, wherein the nozzle slot over its width alternately open areas to form having coated with the coating composition strips and closed areas to form uncoated with the coating mass strip.
  • the invention relates to a method for strip-coating a web-shaped carrier with a flowable coating composition, wherein the application composition is applied to the carrier through a nozzle slot formed between a first lip and a second lip of a slot nozzle, the nozzle slot being over its Width alternately has open and closed areas and the formation of coated with the coating mass strip on the support through the open areas and the formation of non-coated with the coating composition strip on the support through the closed areas.
  • the softened adhesive is transported in the region of a nozzle arrangement through a coating plate arranged between two lips of the nozzle arrangement transversely to the flow direction of the adhesive, the coating plate substantially covering the width of the web.
  • the coating plate forms the outlet opening for the softened adhesive, which then either freely travels over a certain distance or passes directly after the carrier web transported past the coating plate.
  • the coating plate is for example formed as made of a suitable metal, such as brass, sheet metal and attached to one or both lips so that adhesive can escape only through formed in the plate outlet openings.
  • the formation of the nozzle assembly and the coating plate made of a thermally conductive metal makes it easier to keep the adhesive located in the nozzle assembly sufficiently fluid.
  • the coating plate can be formed as open areas fixed predetermined outlet openings for the formation of individual adhesive threads which impinge with a corresponding distance from each other across the width of the web on this and after the further transport of the web at a certain distance from each other, arranged parallel adhesive strips with appropriate Thickness form.
  • the adhesive passes through the recesses formed side by side in the coating plate transversely to the transport direction of the web, wherein - seen transversely to the transport direction of the web - the width of a respective recess corresponds to the thickness of the corresponding adhesive strip to be formed on the web and the distance between each two of the recesses corresponds to the corresponding distance between the respective adhesive strips on the web.
  • the coating plate may in principle be provided parallel to the web slightly above it (eg at a distance of 0.05 mm).
  • the EP-A-1 010 472 shows the features of the preamble of claim 1 and 7.
  • the present invention has for its object to provide a method and a job tool of the type mentioned by the improved quality of the strip-shaped carrier is ensured in a simplified assembly of the tool.
  • the application tool according to the invention allows an extremely fast installation and removal of the coating stream splitting inserts.
  • the object underlying the invention is achieved by the features of claim 7.
  • An advantage of the process control according to the invention which can be ensured by such a design of the inserts that not only at the nozzle exit gap is intervened in the flow profile of the nozzle, but for example, already several centimeters inside the nozzle, it consists in that even with highly viscous order or Coating masses can not lead to a jam at the openings of single or superior plates and the application mass is present in the edge regions of the outlet openings with higher or lower pressure. As a result, the mass is neither overcoated nor undercoated in the edge regions.
  • the inserts can be designed so that they evenly feed the flow of the application mass in the nozzle slot the remaining between them openings. The strips thus produced are also very uniform in their width and especially thickness.
  • An application tool serves for the strip-like coating of a web-shaped carrier 1 with a flowable application compound M.
  • the tool comprises a slot nozzle 2 which has a first lip 3 and a second lip 4. Between the lips 3, 4, a nozzle slot 5 is formed.
  • the nozzle slot 5 has over its width B across alternately open areas 6 to form coated with the coating mass M strips 7 and 8 closed areas to form the coating mass M not coated strip 9 on.
  • the application method for which the application tool according to the invention can preferably be used can be, in particular, a so-called “curtain coating method” known per se, in which the application mass M is pressed out of the nozzle slot 5 as a curtain and then free falling incident on the carrier to be coated 1.
  • the application mass M, z As an adhesive to supply at several points of the slot 2 and within the slot 2 by a suitable flow path, which also - because he is in the manner of a hanger Branched - is referred to as a "coat hanger" to lead evenly to the area 5a of the exit of the application mass M from the nozzle 2.
  • the closed areas 8 are formed by insert pieces 10 which are inserted from the side of the exit of the application mass M from the slot nozzle 2 into the nozzle slot 5 and project into the nozzle slot 5.
  • the insert pieces 10 are inserted into the nozzle slot 5 and project into the nozzle slot 5 in such a way that almost a plug flow forms in the region 5a of the exit of the application mass M.
  • the insert pieces 10 can taper, in particular via their projecting into the nozzle slot 5 length L from the region 5a of the exit of the application mass M in the nozzle slot 5 into it.
  • a strip coating is realized in particular with a known curtain-coating nozzle as follows: From a sheet of the same thickness D as the nozzle slot 5 in the region 5a of the exit of the mass M - for the production of an adhesive tape as Coated carrier 1, an adhesive is preferably used - are individual inserts 10 made, which can be inserted from the front into the assembled slot 2.
  • the inserts 10 in the slot 2 may preferably be provided the formation of a transition fit.
  • the inserts 10 may preferably be made of a material which is softer than that of the lips 3, 4.
  • the inserts 10 made of a metal sheet, in particular of a copper or aluminum sheet, and the lips 3, 4 made of steel.
  • the inserts 10 are characterized wear parts that can be replaced more often than the costly lips 3, 4.
  • the insert pieces 10 may have an angled shape, wherein one leg 10a of the angle projects into the nozzle slot 5 and the other leg 10b abuts an end face 2a of the slot nozzle 2, in particular a lip 3 of the slot nozzle 2.
  • the first embodiment provides that the inserts 10 are secured by means of individual mounting bracket 11 to the first lip 3.
  • the mounting bracket 11 engages in each case the voltage applied to the end face 2a leg 10b of the insert 10 and holds it firmly on the end face 2a.
  • the mounting bracket 11 in turn are each secured by means of a groove 12 laterally displaceable and screwed there sliding block 13 on the lip 3.
  • a plurality, preferably all, inserts 10 are fastened by means of a common fastening strip 14 on the lip 3.
  • the positive fastening can be made faster than during assembly by the individual mounting bracket eleventh
  • Fig. 3 shows a third embodiment, in which it is provided that the inserts 10 are part of a common, preferably integrally formed, insert comb 15 for the nozzle slot 5.
  • the insert comb 15 may, as shown, for example, be secured by screws 16 to the side edges of the lip 3, wherein this fastening is subsumed under "positive fit”.
  • the invention is not limited to the exemplary embodiments described.
  • the geometric dimensions may differ from those shown.
  • the nozzle slot 5 may be inclined to the surface of the carrier 1 during coating at a predetermined angle, in particular at an angle between 70 ° and 90 °.
  • a width BS of a strip 9 not coated with application mass M may be in the range of 2 to 100 mm.
  • the application weight M can be applied to the carrier 1 on a coated strip 7 having a specific mass in the range from 1 to 1000 g / m 2, wherein the temperature-dependent viscosity of the application weight M can be in the range from 1000 to 200 000 mPas. This may be a viscoelastic application mass M.
  • the strip-like coated carrier 1 can - as shown - are wound on itself into a roll 17, the speed of its web can be up to 600 m / min.
  • the exit speed of the application mass M from the slot nozzle 2 can be in particular in the range between 10 and 250 m / min, and thereby preferably assume a value of 10 to 60 percent of the speed of the web of the carrier 1. In this way, a desired thickness of the coating on the carrier 1 can be adjusted.
  • the plug flow represents an idealized flow, which does not occur in pure form in practice, because walls often form so-called laminar boundary layers, this is understood according to the invention to mean that the local velocity and / or the local pressure over the cross section of the open area 6 only slightly up or down from each mean value. Also, a slight backmixing of the application mass M, as occurs in a turbulent flow, allowed.
  • the setting of the almost plug-shaped flow profile can via the pressure and the speed of the application mass M in the region 5a of its exit from the nozzle slot 5, on the geometry of the outlet opening, ie the open area 6, the length L and shape of the inserts 10 and each via a Roughness are controlled, the lips 3, 4 of the nozzle and the contact with the mass M in contact, unspecified edges of the inserts 10 have. For example, higher roughness at these points and a higher speed lead to a homogenization of the airfoil. It is particularly important that the flow of the idealized plug profile approximates as far as possible by the shape of the insert pieces 10 while a width of an edge region in which the flow velocity is lower than an average speed is minimized.
  • the so-called Reynolds number Re which describes the ratio of the inertial forces to the viscous forces
  • Kapillariere Ca which describes the ratio of the viscous forces to the surface tension
  • a ruler can be advantageously applied, for example, to facilitate the positioning of the inserts 10 on a lip 3.

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (16)

  1. Outil d'enduction, pour revêtir en bandes un support (1) en forme de feuille continue, avec une masse d'enduction (M) fluide, comportant une filière plate (2), qui comprend une première lèvre (3) et une deuxième lèvre (4), entre lesquelles est formée une ouverture (5), l'ouverture (5) présentant, sur toute sa largeur (B), en alternance des zones ouvertes (6) destinées à former des bandes (7) revêtues de la masse d'enduction (M) et des zones fermées (8) destinées à former des bandes (9) qui ne sont pas revêtues de la masse d'enduction (M), dans lequel les zones fermées (8) sont fermées par des pièces d'insertion (10), qui sont disposées dans l'ouverture (5) sur le côté de sortie de la masse d'enduction (M), les pièces d'insertion (10) étant poussées dans l'ouverture (5) à partir du côté de sortie de la masse d'enduction (M), et dépassant à l'intérieur de l'ouverture (5), et comportant un arrêt, avec liaison dynamique, dans l'ouverture (2), caractérisé en ce que les pièces d'insertion (10) sont en outre fixées par une liaison avec correspondance de forme à une lèvre (3),
    - les pièces d'insertion (10) étant fixées à la première lèvre (3) au moyen de cornières de fixation individuelles (11), chacune des cornières de fixation (11) recouvrant une branche (10b) de la pièce d'insertion (10), branche qui s'appuie contre une surface frontale (2a) de l'ouverture, et maintenant cette branche contre la surface frontale (2a), les cornières de fixation étant pour elles-mêmes chacune fixées à la première lèvre (3) à l'aide d'un coulisseau (13), pouvant coulisser latéralement dans une rainure (12) et y être vissé,
    - ou bien plusieurs pièces d'insertion (10) sont fixées à la première lèvre (3) à l'aide d'une baguette de fixation commune (14),
    - ou bien les pièces d'insertion (10) forment une partie d'un peigne d'insertion commun (15) pour l'ouverture (5), ce peigne étant fixé aux bords latéraux de la première lèvre (3).
  2. Outil d'enduction selon la revendication 1, caractérisé en ce que les pièces d'insertion (10) ont la même épaisseur (D) que celle de l'ouverture à l'état assemblé au niveau de la zone (5a) de sortie de la masse d'enduction (M).
  3. Outil d'enduction selon la revendication 1 ou 2, caractérisé en ce que les pièces d'insertion (10) sont fabriquées en un matériau qui est plus mou que celui des lèvres (3, 4).
  4. Outil d'enduction selon l'une des revendications 1 à 3, caractérisé en ce que les pièces d'insertion (10) sont constituées d'une tôle, en particulier d'une tôle de cuivre ou d'aluminium, et les lèvres (3, 4) sont constituées d'acier.
  5. Outil d'enduction selon l'une des revendications 1 à 4, caractérisé en ce que les pièces d'insertion (10), sur toute leur longueur (L) dépassant vers l'intérieur de l'ouverture (5), se rétrécissent, de la zone (5a) de sortie de la masse d'enduction (M) à l'ouverture (5).
  6. Outil d'enduction selon l'une des revendications précédentes, caractérisé en ce qu'une règle est appliquée sur une lèvre (3).
  7. Procédé pour revêtir en bandes un support (1) en forme de feuille continue, avec une masse d'enduction (M) fluide, dans lequel la masse d'enduction (M) est appliquée sur le support (1) en passant par une ouverture (5), qui est formée entre une première lèvre (3) et une deuxième lèvre (4) d'une filière plate (2), l'ouverture (5) présentant sur toute sa largeur (B), en alternance, des zones ouvertes (6) et des zones fermées (8), les bandes (7) revêtues de la masse d'enduction (M) étant formées sur le support (1) par les zones ouvertes (6), et les bandes (9) non revêtues de la masse d'enduction (M) étant formées sur le support (1) par les zones fermées (8), dans lequel les zones fermées (8) sont fermées par des pièces d'insertion (10) qui sont disposées dans l'ouverture (5) sur le côté de sortie de la masse d'enduction (M), qui sont poussées dans l'ouverture (5) à partir du côté de sortie de la masse d'enduction (M) et qui pénètrent à l'intérieur de l'ouverture (5), en présentant un arrêt avec liaison dynamique dans la filière plate (2), caractérisé par l'utilisation d'un outil d'enduction selon l'une des revendications 1 à 6 pour assurer le revêtement, les pièces d'insertion (10) étant insérées dans l'ouverture (5) et dépassant à l'intérieur de l'ouverture (5) de telle sortie qu'il se forme dans la zone (5a) de sortie de la masse d'enduction (M) un écoulement presque de type bouchon, dans lequel l'état de la masse d'enduction (M) varie dans la direction d'écoulement (F), en étant cependant presque identique pour chaque section transversale individuelle, perpendiculaire à la direction de l'écoulement (F).
  8. Procédé selon la revendication 7, caractérisé en ce que la masse d'enduction (M) est appliquée sur le support (1) sur une bande revêtue (7), avec une masse surfacique comprise dans une plage allant de 1 à 1000 g/m2.
  9. Procédé selon la revendication 7 ou 8, caractérisé en ce que la masse d'enduction (M) est appliquée de telle sorte qu'une largeur (BS) d'une bande (9) qui n'est pas revêtue de la masse d'enduction (M) soit comprise dans une plage allant de 2 à 100 mm.
  10. Procédé selon l'une des revendications 7 à 9, caractérisé en ce que c'est une masse d'enduction viscoélastique (M) qui est appliquée sur le support (1).
  11. Procédé selon l'une des revendications 7 à 10, caractérisé en ce que la viscosité de la masse d'enduction (M) est comprise dans une plage allant de 1000 à 200 000 mPa.s.
  12. Procédé selon l'une des revendications 7 à 11, caractérisé en ce que la masse d'enduction (M) est pressée de façon à sortir par l'ouverture (5) sous la forme d'un rideau, puis arrive en chute libre sur le support (1) à revêtir.
  13. Procédé selon l'une des revendications 7 à 12, caractérisé en ce que la masse d'enduction (M) est un adhésif, et le support revêtu (1) est un ruban adhésif.
  14. Procédé selon l'une des revendications 7 à 13, caractérisé en ce que l'ouverture (5), lors du revêtement, est incliné selon un angle prédéfini, en particulier selon un angle compris entre 70 ° et 90 ° par rapport à la surface du support (1).
  15. Procédé selon l'une des revendications 7 à 14, caractérisé en ce que le support revêtu en bandes (1) est enroulé sur lui-même pour former un rouleau (16), la vitesse de la feuille continue du support (1) pouvant aller jusqu'à 600 m/min.
  16. Procédé selon l'une des revendications 7 à 15, caractérisé en ce qu'une vitesse de sortie de la masse d'enduction (M) à partir de la filière plate (2) est fixée à une valeur allant de 10 à 60 % de la vitesse de la feuille continue du support (1).
EP09151119A 2009-01-22 2009-01-22 Outil d'application et procédé de revêtement en forme de bande d'un support en forme de bande Not-in-force EP2213380B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT09151119T ATE541647T1 (de) 2009-01-22 2009-01-22 Auftragswerkzeug und verfahren zum streifenförmigen beschichten eines bahnförmigen trägers
EP09151119A EP2213380B1 (fr) 2009-01-22 2009-01-22 Outil d'application et procédé de revêtement en forme de bande d'un support en forme de bande
PL09151119T PL2213380T3 (pl) 2009-01-22 2009-01-22 Narzędzie powlekające i sposób pasmowego powlekania nośnika wstęgowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09151119A EP2213380B1 (fr) 2009-01-22 2009-01-22 Outil d'application et procédé de revêtement en forme de bande d'un support en forme de bande

Publications (2)

Publication Number Publication Date
EP2213380A1 EP2213380A1 (fr) 2010-08-04
EP2213380B1 true EP2213380B1 (fr) 2012-01-18

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EP09151119A Not-in-force EP2213380B1 (fr) 2009-01-22 2009-01-22 Outil d'application et procédé de revêtement en forme de bande d'un support en forme de bande

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EP (1) EP2213380B1 (fr)
AT (1) ATE541647T1 (fr)
PL (1) PL2213380T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11383213B2 (en) 2016-03-15 2022-07-12 Honda Motor Co., Ltd. System and method of producing a composite product
CN112275550A (zh) * 2020-10-29 2021-01-29 衡阳市墨石网络科技有限公司 一种多媒体广告投放用显示屏制造的点胶设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1010472A2 (fr) * 1998-12-16 2000-06-21 Matsushita Electric Industrial Co., Ltd. Dispositif et procédé d'application de bandes de revêtement

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JPS5835751B2 (ja) * 1980-09-08 1983-08-04 極東脂肪酸株式会社 液状体塗布装置
JPS606427A (ja) * 1983-06-27 1985-01-14 Takao Wada Ｔダイに於ける間歇ラミネ−トの製法
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EP0761877A3 (fr) * 1995-09-06 1997-06-25 Voith Sulzer Papiermasch Gmbh Dispositif d'application directe ou indirecte de matériau fluide ou pâteux sur une bande en mouvement, en particulier de papier ou carton
DE29613687U1 (de) * 1996-08-07 1996-10-24 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Auftragwerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Streichmediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
TR200003107T2 (tr) 1998-04-24 2001-02-21 Minnesota Mining And Manufacturing Company Şerit halinde yapıştırıcı madde ile kaplı bant.
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KR100500756B1 (ko) * 2003-06-27 2005-07-11 주식회사 디엠에스 평판 디스플레이 표면 처리용 유체분사장치
DE10357231B4 (de) 2003-12-08 2012-12-27 Synflex Elektro Gmbh & Co. Kg Streifenbeschichtetes Elektroklebeband und Verfahren zu dessen Herstellung

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EP1010472A2 (fr) * 1998-12-16 2000-06-21 Matsushita Electric Industrial Co., Ltd. Dispositif et procédé d'application de bandes de revêtement

Also Published As

Publication number Publication date
ATE541647T1 (de) 2012-02-15
EP2213380A1 (fr) 2010-08-04
PL2213380T3 (pl) 2012-06-29

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