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EP1209274A3 - Curtain coater - Google Patents

Curtain coater Download PDF

Info

Publication number
EP1209274A3
EP1209274A3 EP01127739A EP01127739A EP1209274A3 EP 1209274 A3 EP1209274 A3 EP 1209274A3 EP 01127739 A EP01127739 A EP 01127739A EP 01127739 A EP01127739 A EP 01127739A EP 1209274 A3 EP1209274 A3 EP 1209274A3
Authority
EP
European Patent Office
Prior art keywords
guide
coating
curtain
degrees
substrate
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.)
Granted
Application number
EP01127739A
Other languages
German (de)
French (fr)
Other versions
EP1209274A2 (en
EP1209274B1 (en
Inventor
Benjamin Dr. Méndez-Gallon
Fritz Lauss
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 Paper 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
Priority claimed from DE2000157732 external-priority patent/DE10057732A1/en
Priority claimed from DE2000157734 external-priority patent/DE10057734A1/en
Application filed by Voith Paper Patent GmbH filed Critical Voith Paper Patent GmbH
Publication of EP1209274A2 publication Critical patent/EP1209274A2/en
Publication of EP1209274A3 publication Critical patent/EP1209274A3/en
Application granted granted Critical
Publication of EP1209274B1 publication Critical patent/EP1209274B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05C5/005—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
    • 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

Landscapes

  • Coating Apparatus (AREA)
  • Paper (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Saccharide Compounds (AREA)

Abstract

The curtain coating assembly (10), to coat the surface of a moving web substrate (U) with a paste or liquid coating (18) and especially a pigment suspension, has a jet unit (14) at the applicator (12) to deliver a coating curtain (18). At least one guide (22) is in the falling path of the coating curtain, which directs the coating over the whole curtain width over at least a part of its falling path. The web curtain coating assembly has a guide in the path of the falling coating curtain, which divides it into a path section (24) between the feed and the guide, and a second path section (26) between the guide and the moving substrate. The guide can be directly at the delivery jet. The variable length of the curtain coating which covers the guide is measured in the direction of its movement. The guide forms an included angle ( alpha ) of 5-30 degrees with the direction of the curtain coating free fall line. The surface (22a) of the guide, covered by the coating medium, forms an included angle ( beta ) with the end surface (22b) of the guide of 20-60 degrees . The guide can be a guide scraper against the substrate. The guide is pitched at an angle of 20-80 degrees in the required flow direction, and preferably 45-80 degrees . The end of the guide surface towards the moving substrate can be extended at an angle of 30-50 degrees . The guide can also cover the whole flow stretch for the coating medium, between the delivery jet and the moving substrate. The surface of the guide, towards the coating medium, has a hydrophobic character, or has a hydrophobic cladding of a treated glass fiber film. At least the end surface of the guide is free of hydrophobic cladding. The coating curtain flows over the upper surface of the guide, or along its under surface. At least one electrode can be at the guide, on the side away from the flowing coating. A suction box is at the moving substrate, in front of the contact line where the coating curtain strikes it, together with a scraper at the entry and/or exit side, with a scraping edge lying on the moving substrate. The scraper at the exit side can be formed by the coating guide. The coating curtain flows over the guide surface, in a length (l) of 1-200 mm and preferably 1-50 mm. The travel speed of the substrate is 1000-3000 m/min. for a paper web and 200-1000 m/min. for a cardboard web. The coating is applied in ready doses to the substrate surface. The delivery jet has a coating delivery rate of 2-200 l/min. per meter of the web width. The length (H) of the coating curtain is 5-400 mm and preferably 40-200 mm. The guide is of metal or plastics e.g. a plastics with reinforcement carbon or glass fibers. The guide has a thickness (D) of 0.2-1.0 mm. The guide is positioned at the applicator, at an angle to the moving substrate of 70 degrees , in either direction. The guide can have a convex or concave curvature, with a curved surface at a tangent to the free fall of the coating curtain, in either direction, at an angle of up to 70 degrees .
EP01127739A 2000-11-22 2001-11-21 Curtain coater Expired - Lifetime EP1209274B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10057732 2000-11-22
DE2000157732 DE10057732A1 (en) 2000-11-22 2000-11-22 Web curtain coating station has a rotating roller in the curtain fall path, to divide the coating path into two sections to set the coating speed according to the substrate speed to prevent coating distortions
DE2000157734 DE10057734A1 (en) 2000-11-22 2000-11-22 Web curtain coating station, especially using a pigment suspension, has a guide in the free fall path of the coating to divide the path into two sections and reduce distorting effects on the laid coating at the moving substrate surface
DE10057734 2000-11-22

Publications (3)

Publication Number Publication Date
EP1209274A2 EP1209274A2 (en) 2002-05-29
EP1209274A3 true EP1209274A3 (en) 2003-06-11
EP1209274B1 EP1209274B1 (en) 2010-01-27

Family

ID=26007728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01127739A Expired - Lifetime EP1209274B1 (en) 2000-11-22 2001-11-21 Curtain coater

Country Status (3)

Country Link
EP (1) EP1209274B1 (en)
AT (1) ATE456695T1 (en)
DE (1) DE50115328D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111562B (en) 2002-01-16 2003-08-15 Metso Paper Inc A method and apparatus for applying a treating agent to a moving surface
JP4746894B2 (en) * 2005-03-14 2011-08-10 ボイス ペ−パ− パテント ゲ−エムベ−ハ− Coating equipment
JP4902160B2 (en) * 2005-09-22 2012-03-21 ボイス ペ−パ− パテント ゲ−エムベ−ハ− Coating equipment
CN106563608A (en) * 2016-11-04 2017-04-19 三峡大学 Method and device for preparing anti-reflection self-cleaning film on glass

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809128A (en) * 1953-07-14 1957-10-08 Ransburg Electro Coating Corp Electrostatic method and apparatus for atomizing and for coating
DE2438673A1 (en) * 1974-08-12 1976-02-26 Riggs & Lombard Inc Fabric web scouring machine - pours liquid onto web carried on vibrated mesh suction conveyor
DE2631559A1 (en) * 1976-07-14 1978-01-19 Helvisol Ag Adhesive distributor for travelling strip - has set of slope and height adjustable troughs between adhesive container and conveyor
DE3333592A1 (en) * 1983-09-16 1985-04-18 Brückner-Apparatebau GmbH, 6120 Erbach Apparatus for the application of a liquid film to a length of material
DE9012108U1 (en) * 1990-08-23 1990-10-25 Fa. Theodor Hymmen, 4800 Bielefeld Pouring head of a pouring machine for pouring liquids
JPH02277570A (en) * 1989-04-19 1990-11-14 Fuji Photo Film Co Ltd Applicator
EP0421466A2 (en) * 1989-10-06 1991-04-10 Fuji Photo Film Co., Ltd. Coating apparatus
US5063758A (en) * 1989-05-16 1991-11-12 Eduard Kusters Maschinenfabrik Gmbh & Co. Apparatus for applying a treatment fluid having pivotal nozzle combs
US5143759A (en) * 1990-07-13 1992-09-01 Fuji Photo Film Co., Ltd. Method and apparatus for applying an emulsion layer to photographic plates including pivoting conveyance rollers
US5277041A (en) * 1990-05-18 1994-01-11 Eduard Kusters Maschinenfabrik Gmbh & Co. Kg Drain board for a device for applying a liquid film to a web of textile material
JPH06262129A (en) * 1993-03-12 1994-09-20 Sumitomo Metal Ind Ltd Curtain flow coating method
JPH1024260A (en) * 1996-07-11 1998-01-27 Nippon Steel Corp Roller curtain coater
DE19903559A1 (en) * 1998-01-30 1999-10-21 Mitsubishi Paper Mills Ltd Extremely high-speed falling liquid film paper coating machine

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2809128A (en) * 1953-07-14 1957-10-08 Ransburg Electro Coating Corp Electrostatic method and apparatus for atomizing and for coating
DE2438673A1 (en) * 1974-08-12 1976-02-26 Riggs & Lombard Inc Fabric web scouring machine - pours liquid onto web carried on vibrated mesh suction conveyor
DE2631559A1 (en) * 1976-07-14 1978-01-19 Helvisol Ag Adhesive distributor for travelling strip - has set of slope and height adjustable troughs between adhesive container and conveyor
DE3333592A1 (en) * 1983-09-16 1985-04-18 Brückner-Apparatebau GmbH, 6120 Erbach Apparatus for the application of a liquid film to a length of material
JPH02277570A (en) * 1989-04-19 1990-11-14 Fuji Photo Film Co Ltd Applicator
US5063758A (en) * 1989-05-16 1991-11-12 Eduard Kusters Maschinenfabrik Gmbh & Co. Apparatus for applying a treatment fluid having pivotal nozzle combs
EP0421466A2 (en) * 1989-10-06 1991-04-10 Fuji Photo Film Co., Ltd. Coating apparatus
US5277041A (en) * 1990-05-18 1994-01-11 Eduard Kusters Maschinenfabrik Gmbh & Co. Kg Drain board for a device for applying a liquid film to a web of textile material
US5143759A (en) * 1990-07-13 1992-09-01 Fuji Photo Film Co., Ltd. Method and apparatus for applying an emulsion layer to photographic plates including pivoting conveyance rollers
DE9012108U1 (en) * 1990-08-23 1990-10-25 Fa. Theodor Hymmen, 4800 Bielefeld Pouring head of a pouring machine for pouring liquids
JPH06262129A (en) * 1993-03-12 1994-09-20 Sumitomo Metal Ind Ltd Curtain flow coating method
JPH1024260A (en) * 1996-07-11 1998-01-27 Nippon Steel Corp Roller curtain coater
DE19903559A1 (en) * 1998-01-30 1999-10-21 Mitsubishi Paper Mills Ltd Extremely high-speed falling liquid film paper coating machine

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 043 (C - 0801) 31 January 1991 (1991-01-31) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 664 (C - 1288) 15 December 1994 (1994-12-15) *
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 05 30 April 1998 (1998-04-30) *

Also Published As

Publication number Publication date
ATE456695T1 (en) 2010-02-15
EP1209274A2 (en) 2002-05-29
EP1209274B1 (en) 2010-01-27
DE50115328D1 (en) 2010-03-18

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