EP2213380B1 - Auftragswerkzeug und Verfahren zum streifenförmigen Beschichten eines bahnförmigen Trägers - Google Patents

Auftragswerkzeug und Verfahren zum streifenförmigen Beschichten eines bahnförmigen Trägers 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)
French (fr)
Other versions
EP2213380A1 (de
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 PL09151119T priority Critical patent/PL2213380T3/pl
Priority to AT09151119T priority patent/ATE541647T1/de
Priority to EP09151119A priority patent/EP2213380B1/de
Publication of EP2213380A1 publication Critical patent/EP2213380A1/de
Application granted granted Critical
Publication of EP2213380B1 publication Critical patent/EP2213380B1/de
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)
EP09151119A 2009-01-22 2009-01-22 Auftragswerkzeug und Verfahren zum streifenförmigen Beschichten eines bahnförmigen Trägers Not-in-force EP2213380B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL09151119T PL2213380T3 (pl) 2009-01-22 2009-01-22 Narzędzie powlekające i sposób pasmowego powlekania nośnika wstęgowego
AT09151119T ATE541647T1 (de) 2009-01-22 2009-01-22 Auftragswerkzeug und verfahren zum streifenförmigen beschichten eines bahnförmigen trägers
EP09151119A EP2213380B1 (de) 2009-01-22 2009-01-22 Auftragswerkzeug und Verfahren zum streifenförmigen Beschichten eines bahnförmigen Trägers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09151119A EP2213380B1 (de) 2009-01-22 2009-01-22 Auftragswerkzeug und Verfahren zum streifenförmigen Beschichten eines bahnförmigen Trägers

Publications (2)

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

Family

ID=40513908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09151119A Not-in-force EP2213380B1 (de) 2009-01-22 2009-01-22 Auftragswerkzeug und Verfahren zum streifenförmigen Beschichten eines bahnförmigen Trägers

Country Status (3)

Country Link
EP (1) EP2213380B1 (pl)
AT (1) ATE541647T1 (pl)
PL (1) PL2213380T3 (pl)

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 (en) * 1998-12-16 2000-06-21 Matsushita Electric Industrial Co., Ltd. A stripe coating applicator and method

Family Cites Families (13)

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Publication number Priority date Publication date Assignee Title
US3941550A (en) * 1972-02-04 1976-03-02 Marion George J Apparatus using solid insulating material as a center plate between multiple flat extrusion streams
EP0041729B1 (de) * 1980-06-10 1984-11-28 Erich Pagendarm Schlitzdüse zur Bildung von zusammenhängenden Gas- oder Flüssigkeitsschleiern, beispielsweise für Brenner
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
US4774109A (en) 1987-07-21 1988-09-27 Nordson Corporation Method and apparatus for applying narrow, closely spaced beads of viscous liquid to a substrate
IE74405B1 (en) * 1993-10-19 1997-07-30 Athlone Extrusions Dev Ltd Production of plastics sheet material
DE4412939C1 (de) * 1994-04-15 1995-09-07 Voith Gmbh J M Schlitzdüse
EP0761877A3 (de) * 1995-09-06 1997-06-25 Voith Sulzer Papiermasch Gmbh Auftragswerk zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
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
WO1999055790A1 (en) 1998-04-24 1999-11-04 Minnesota Mining And Manufacturing Company Striped adhesive-coated tape
DE10316861A1 (de) * 2003-04-11 2004-10-21 Voith Paper Patent Gmbh Jet Flow-Cleaner
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1010472A2 (en) * 1998-12-16 2000-06-21 Matsushita Electric Industrial Co., Ltd. A stripe coating applicator and method

Also Published As

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

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