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WO2008141820A1 - Bec pour appliquer un liquide sur un substrat - Google Patents

Bec pour appliquer un liquide sur un substrat Download PDF

Info

Publication number
WO2008141820A1
WO2008141820A1 PCT/EP2008/004083 EP2008004083W WO2008141820A1 WO 2008141820 A1 WO2008141820 A1 WO 2008141820A1 EP 2008004083 W EP2008004083 W EP 2008004083W WO 2008141820 A1 WO2008141820 A1 WO 2008141820A1
Authority
WO
WIPO (PCT)
Prior art keywords
slot nozzle
mouthpiece
slot
nozzle plate
mouthpiece according
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.)
Ceased
Application number
PCT/EP2008/004083
Other languages
German (de)
English (en)
Inventor
Franz Durst
Carolin KÖRNER
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.)
FMP TECHNOLOGY GmbH
Original Assignee
FMP TECHNOLOGY 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 FMP TECHNOLOGY GmbH filed Critical FMP TECHNOLOGY GmbH
Publication of WO2008141820A1 publication Critical patent/WO2008141820A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B05C5/0254—Coating heads with slot-shaped outlet

Definitions

  • the invention relates to a mouthpiece for coating a substrate with a liquid according to the preamble of claim 1.
  • the invention generally relates to the field of coating of flat substrates, for example paper or the like. , with a liquid.
  • a mouthpiece has a slot nozzle for producing a thin film of the liquids used for the coating.
  • the mouthpiece can have a width of up to 7 m. It is usually formed from two slot nozzle elements mounted in opposing arrangement. A slot width of the slot nozzle formed from the opposing slot nozzle elements is usually in the range of 50 to 400 microns.
  • the slot nozzle elements are manufactured over their entire width with the highest precision.
  • the required manufacturing precision is currently achieved by making the slot nozzle elements from solid stainless steel. Not least because of the weight of the solid material, the handling and production of a mouthpiece according to the prior art is extremely time consuming and costly.
  • the object of the invention is to eliminate the disadvantages of the prior art. It is intended in particular a mouthpiece be specified for coating a substrate with a liquid that can be produced with less effort while maintaining the required precision. According to a further object of the invention, the mouthpiece should be designed so that the slot width does not change even when occurring during operation temperature fluctuations.
  • At least one of the two slot nozzle elements is designed as a lightweight component, wherein a slit facing the first slot nozzle plate is connected via a framework structure with a support member.
  • a slot nozzle plate delimits the slot.
  • the slot nozzle plate is connected via a framework structure with a carrier element.
  • the framework structure comprises a plurality of metal webs connecting the carrier element to the slot nozzle plate. It is advantageous that the metal webs extend substantially perpendicular to the surface of the slot nozzle plate. It is all It is also possible that the metal webs extend at least partially obliquely, ie at an acute angle, to the surface of the slot nozzle plate. The metal webs may also intersect and / or be interconnected.
  • the framework structure can also be formed from a metal foam or a ceramic foam according to a further advantageous embodiment.
  • the metal or ceramic foam may have an open-pored design so that a cooling fluid can flow through it. It can also be formed from closed pores.
  • the arrangement of the metal webs or the configuration of the metal or ceramic foam is selected so that thermally induced changes in shape of the slot nozzle element are minimized.
  • a material can be used for producing the metal webs or the metal or ceramic foam, which has a particularly low thermal expansion coefficient, in particular in a direction perpendicular to the surface of the slot nozzle plate.
  • the effective thermal expansion coefficient of the framework structure in the direction perpendicular to the surface of the slot nozzle plate is zero.
  • the framework structure can be designed in the form of at least one, preferably plate-like, mounting element.
  • a mounting element can, for. B. are connected by welding to the support member and / or the slot nozzle plate.
  • the slot nozzle plate is advantageously made of one of the following materials: titanium, stainless steel, invar, ceramic or glass ceramic.
  • "Invar” is an iron-nickel alloy with about 36% nickel. Up to 1% of magnesium, silicon and carbon can be alloyed here. to change the mechanical properties. By alloying up to 5% cobalt, the thermal expansion coefficient can be further reduced. Similar to the framework structure, care must also be taken when selecting the material for producing the slot nozzle plate that it has a particularly low thermal expansion coefficient in a direction perpendicular to the surface of the slot nozzle plate.
  • a coefficient of thermal expansion of the lightweight component in a direction perpendicular to the surface of the slot nozzle plate is less than 0.015 x 10 4 (K "1 ), preferably less than 0.010 x 10 4 (K " 1 ).
  • K "1 0.015 x 10 4
  • K " 1 0.010 x 10 4
  • Carrier element are connected to the framework structure by means of welding, soldering or gluing.
  • the lightweight component is made of one and the same material.
  • rapid prototyping processes enable the production of complex components.
  • the electron beam rapid prototyping method makes it possible to produce a lightweight component of one piece, which is formed, for example, from titanium or invar.
  • lightweight structural elements which in particular contain a core formed from a metal foam
  • metal foam lightweight components can be produced for example by injection molding.
  • ceramic foams elements are generally known in the prior art. For example, they may be Al 2 O 3 or SiC or the like. be prepared.
  • framework structures can also be produced, for example by means of water jet cutting, from a solid material.
  • the framework structures may have, in particular, walls that run perpendicular to the surface of the slot nozzle plate, preferably contiguous walls.
  • the walls can form a honeycomb-shaped structure.
  • the slot nozzle plate has a thickness in the range of 3 to 15 mm, preferably in the range of 4 to 8 mm.
  • a slot nozzle element can be produced whose weight is reduced by more than 50%, preferably more than 60 to 90%, compared to conventional slot nozzle elements.
  • the surface of the slot nozzle plate is coated or modified. It can be
  • Coatings or modifications of the slot nozzle plate are made, which affect their wettability, resistance to acids or bases, tribological properties and the like.
  • a predetermined wetting angle can be set for a liquid to be conveyed through the slot nozzle.
  • the surface of the slot nozzle plate is polished. This allows the production a liquid film of constant thickness over the entire width of the slot nozzle.
  • a slot width of the slot nozzle is preferably in the range of 20 to 500 ⁇ m, preferably 50 to 200 ⁇ m.
  • the framework structure is used for passing a fluid for setting a predetermined temperature of the slot nozzle plate or the mouthpiece. Because of the provision of the framework structure according to the invention, compared to the production of conventional slot nozzle elements, it is no longer necessary to manufacture channels at high cost by means of machining, through which a fluid is guided for setting a predetermined temperature of the slot nozzle plate.
  • the fluid may be a gas, preferably air, but in particular also a liquid, preferably water or oil.
  • both the slot nozzle forming slot nozzle elements are designed as lightweight elements according to the invention.
  • the production of the mouthpiece can be further simplified and cheapened.
  • the slot nozzle elements are suitably releasably connected to each other. They can be connected to each other in particular with a screw connection. For this purpose, corresponding massive sections can be provided in the region of the slot nozzle plate, in which threads are incorporated.
  • the proposed releasable connection of the slot nozzle elements allows easy disassembly, for example for cleaning purposes.
  • the mouthpiece on several slot nozzles which by inventive ße lightweight components are formed.
  • the mouthpieces according to the invention may be part of a so-called “cascade slot casting tool” in which a plurality of mouthpieces are arranged one behind the other in such a way that their slot nozzles run parallel to one another.
  • the aforementioned "cascade slot casting tool” allows the application of a liquid film consisting of different superimposed liquid layers.
  • a coating tool which comprises at least one inventive mouthpiece.
  • at least one inventive mouthpiece is provided, which comprises at least one inventive mouthpiece.
  • several mouthpieces according to the invention can also be accommodated in the coating tool.
  • the mouthpiece is accommodated in a direction parallel to the opening direction of the slot nozzle floating in a mouthpiece carrier.
  • thermal expansions in a direction parallel to the opening direction of the slit nozzle can be compensated, i. H.
  • the mouthpiece can expand in this direction.
  • the formation of thermally induced voltages can be avoided, which can lead to an undesirable change in the slot width of the slot nozzle.
  • a sliding layer preferably made of tetrafluoroethylene, is provided between the mouthpiece carrier and the mouthpiece. It can thus be ensured that any thermal linear expansion generated parallel to the opening direction of the slot nozzle can be compensated for by a sliding movement without the generation of undesired stresses.
  • FIG. 2 is a schematic cross-sectional view through a second mouthpiece
  • Fig. 5 is a schematic cross-sectional view through a fourth mouthpiece.
  • a first slot nozzle element 1 and a second slot nozzle element 2 are arranged opposite to each other.
  • the two slot nozzle elements 1, 2 are detachable in this arrangement, for example by means of a
  • the first slot nozzle element 1 has a first slot nozzle plate 3, which is flat at least in the vicinity of a slot nozzle 4 formed therewith.
  • the recesses 5, 6 may be half-round in cross-section. They serve to feed the through the
  • Reference numeral 7 denotes a first framework structure which connects the first slot nozzle plate 3 to a first carrier element 8.
  • the first carrier element 8 summarizes here a support plate, which z. T. parallel to the first slot nozzle plate 3 runs.
  • the support plate also has an angled portion which is connected in the vicinity of the slot nozzle 4 with the first slot nozzle plate 3. At their ends opposite the slot nozzle 4, the first slot nozzle plate 3 and the first carrier element 8 are connected to one another by means of a first cover plate 9.
  • the second slot nozzle element 2 is constructed similarly to the first slot nozzle element 1.
  • a second slot nozzle plate 10 is designed to be flat.
  • a second carrier element 11 is formed symmetrically with the first carrier element 8 with respect to a plane of symmetry passing through the slot nozzle 4.
  • Reference numeral 12 denotes a second cover plate, which connects the free ends of the second slot nozzle plate 10 and the second carrier element 11 to one another in a preferably symmetrical design.
  • a second framework structure 13, which connects the second slot nozzle plate 10 and the second carrier element 11 with each other, may be formed as well as the first framework structure 7.
  • the first 7 and the second frame structure 13 are made of a metal foam.
  • a carbon body formed in each case from the slot die plates 3, 10 and the respective carrier elements 8, 11 and the cover plates 9, 12 can be produced for this purpose.
  • This hollow body can then be used as a mold for injecting a foamable molten metal.
  • preferably stainless steel or invar, but also titanium, are used.
  • the second mouthpiece shown in Fig. 2 is basically similar to the first mouthpiece shown in Fig. 1 constructed.
  • the same reference numerals have been used so far.
  • the first 7 and the second framework structure 13 are formed from metal webs which are connected to one another like a framework.
  • the metal webs can be columnar, d. H. be spaced apart. But they can also form at least partially continuous walls, so that there is a scaffold-like structure formed of a plurality of cavities or channels.
  • the metal bars intersect here at an angle of 90 °.
  • the slot nozzle elements 1, 2 shown in Fig. 2, for example, can be made by rapid prototyping of one piece. They then preferably consist of a metallic material, in particular stainless steel, Invar or titanium. But it is also possible to produce the framework structure 7, 13 by means of extrusion and then to connect with the respective slot nozzle plates 3, 10 and the support elements 8, 11.
  • FIG. 3 shows a photograph of a cut-open embodiment of a slot nozzle element 1.
  • the first carrier element 8 and the first slot nozzle plate 3 are connected to each other via individual metal bars 14 extending perpendicular to the surface thereof.
  • the first framework structure 7 formed from the metal rods 14 can likewise be produced in one piece together with the first support element 8 and the first slot nozzle plate 3 by a rapid prototyping method.
  • the second slot nozzle element 2 in the same way, so the second framework structure 13 also consists of metal bars 14 extending perpendicular to the surface of the second slot nozzle plate 10.
  • the framework structure consists of honeycomb-connected metal webs.
  • the framework structure can first be brought into the appropriate shape.
  • the slot nozzle plate and / or the carrier element can be molded onto this mold, for example by means of rapid prototyping. This can be a significant acceleration of the manufacturing process can be achieved.
  • the channels formed by the honeycomb structure extend substantially parallel to the opening plane of the slot nozzle 4, it is possible to pass a fluid for controlling the temperature of the mouthpiece.
  • the framework structure 7 comprises obliquely intersecting metal webs. Also in this structure, parallel to the recesses 5, 6 extending channels, which can be used to carry out a fluid for controlling the temperature of the mouthpiece.
  • the framework structure 7, 13 flows through as such directly by a cooling fluid.
  • the metal bars 14 or the metal webs used in the framework structures can have a thickness in the range from 2 to 0.5 mm, preferably 1.2 to 0.6 mm.
  • the mouthpieces shown in Figs. 1, 2, 4 and 5 may be floatingly received in a mouthpiece carrier of a coating tool.
  • the mouthpiece carrier has a recess into which, advantageously with the interposition of a sliding layer, the mouthpiece can be inserted with its rear side facing away from the slot nozzle 4.
  • the sliding layer may conveniently be made of tetrafluoroethylene.

Landscapes

  • Nozzles (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne un bec pour appliquer un liquide sur un substrat. Ce bec comprend au moins une buse à fente (4) pour produire un film de liquide présentant une épaisseur donnée, une fente qui forme la buse à fente (4) étant limitée en largeur par deux éléments de buse à fente (1, 2) disposés dans une position opposée l'un vis-à-vis de l'autre. Selon l'invention, pour simplifier la production de ce bec, au moins un des deux éléments de buse à fente (1, 2) est un composant de construction légère dans lequel une première plaque de buse à fente (3) faisant face à la fente est reliée à un élément support (8) par une structure d'ossature (7).
PCT/EP2008/004083 2007-05-21 2008-05-21 Bec pour appliquer un liquide sur un substrat Ceased WO2008141820A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007023798 2007-05-21
DE102007023798.9 2007-05-21
DE102007039867.2 2007-08-23
DE102007039867A DE102007039867B4 (de) 2007-05-21 2007-08-23 Auslassvorrichtung zum Beschichten eines Substrats mit einer Flüssigkeit

Publications (1)

Publication Number Publication Date
WO2008141820A1 true WO2008141820A1 (fr) 2008-11-27

Family

ID=39942245

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/004083 Ceased WO2008141820A1 (fr) 2007-05-21 2008-05-21 Bec pour appliquer un liquide sur un substrat

Country Status (2)

Country Link
DE (1) DE102007039867B4 (fr)
WO (1) WO2008141820A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20080601A1 (it) * 2008-07-31 2010-02-01 Co Me Cart Costruzioni Meccaniche Cartiere S P A Testa di patinatura a getto
EP4137238A4 (fr) * 2020-07-16 2023-10-25 LG Energy Solution, Ltd. Coucheuse à filière à fentes multiples
KR102891881B1 (ko) 2020-07-16 2025-11-26 주식회사 엘지에너지솔루션 듀얼 슬롯 다이 코터

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996015857A1 (fr) * 1994-11-23 1996-05-30 Alcan International Limited Enduction de bandes mobiles avec des matieres ceroides
EP1126923A1 (fr) * 1998-11-04 2001-08-29 Minnesota Mining And Manufacturing Company Systeme de montage de matrices de revetement flottant
US20020098283A1 (en) * 1994-10-27 2002-07-25 Emir Gurer Method of uniformly coating a substrate
US20030127048A1 (en) * 1998-11-10 2003-07-10 Satoshi Kokubo Coating apparatus, method for producing color filter substrate by use of the coating apparatus, and liquid-crystal display apparatus using the color filter substrate produced by the method
US20050000420A1 (en) * 2002-07-18 2005-01-06 Takeaki Tsuda Die head coating, coating device, and method of manufacturing die head for coating
EP1600218A1 (fr) * 2003-03-03 2005-11-30 Toray Industries, Inc. Filiere a fente, procede et dispositif de production d'un materiau de base avec un film de revetement
DE102005007192A1 (de) * 2005-02-16 2006-08-24 M-Real Oyj Auftragsvorrichtung
WO2006117999A1 (fr) * 2005-04-28 2006-11-09 Konica Minolta Holdings, Inc. Dispositif et procede d'application et objet d'application de type bande
US20070044712A1 (en) * 2005-08-29 2007-03-01 Tokyo Ohka Kogyo Co., Ltd. Slit nozzle and apparatus for supplying treatment liquid using slit nozzle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29823997U1 (de) * 1998-09-24 2000-03-02 INT GmbH Ingenieurbüro für Neue Technologien, Anlagenbau, Verfahrenstechnik, ADFOSY, 33689 Bielefeld Vorrichtung zum Auftragen einer viskosen Masse
DE102005005041A1 (de) * 2005-02-03 2006-08-10 Märkisches Werk GmbH Ventil zur Steuerung des Gasaustauschs, insbesondere bei Verbrennungsmotoren
DE202005006368U1 (de) * 2005-04-20 2005-06-30 Nordson Corporation, Westlake Vorrichtung zum Auftragen von Fluiden auf eine Kontur eines Substrats

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020098283A1 (en) * 1994-10-27 2002-07-25 Emir Gurer Method of uniformly coating a substrate
WO1996015857A1 (fr) * 1994-11-23 1996-05-30 Alcan International Limited Enduction de bandes mobiles avec des matieres ceroides
EP1126923A1 (fr) * 1998-11-04 2001-08-29 Minnesota Mining And Manufacturing Company Systeme de montage de matrices de revetement flottant
US20030127048A1 (en) * 1998-11-10 2003-07-10 Satoshi Kokubo Coating apparatus, method for producing color filter substrate by use of the coating apparatus, and liquid-crystal display apparatus using the color filter substrate produced by the method
US20050000420A1 (en) * 2002-07-18 2005-01-06 Takeaki Tsuda Die head coating, coating device, and method of manufacturing die head for coating
EP1600218A1 (fr) * 2003-03-03 2005-11-30 Toray Industries, Inc. Filiere a fente, procede et dispositif de production d'un materiau de base avec un film de revetement
DE102005007192A1 (de) * 2005-02-16 2006-08-24 M-Real Oyj Auftragsvorrichtung
WO2006117999A1 (fr) * 2005-04-28 2006-11-09 Konica Minolta Holdings, Inc. Dispositif et procede d'application et objet d'application de type bande
US20070044712A1 (en) * 2005-08-29 2007-03-01 Tokyo Ohka Kogyo Co., Ltd. Slit nozzle and apparatus for supplying treatment liquid using slit nozzle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20080601A1 (it) * 2008-07-31 2010-02-01 Co Me Cart Costruzioni Meccaniche Cartiere S P A Testa di patinatura a getto
EP2149399A1 (fr) * 2008-07-31 2010-02-03 CO.ME.CART. Costruzioni Meccaniche Cartiere S.p.A. Tête d'application
EP4137238A4 (fr) * 2020-07-16 2023-10-25 LG Energy Solution, Ltd. Coucheuse à filière à fentes multiples
US12053796B2 (en) 2020-07-16 2024-08-06 Lg Energy Solution, Ltd. Multi-slot die coater
KR102891881B1 (ko) 2020-07-16 2025-11-26 주식회사 엘지에너지솔루션 듀얼 슬롯 다이 코터

Also Published As

Publication number Publication date
DE102007039867A1 (de) 2008-12-11
DE102007039867B4 (de) 2010-04-29

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