WO1988005698A1 - Mecanisme applicateur a racloir roulant pour application d'enductions sur des materiaux en bande - Google Patents

Mecanisme applicateur a racloir roulant pour application d'enductions sur des materiaux en bande Download PDF

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Publication number
WO1988005698A1
WO1988005698A1 PCT/EP1988/000087 EP8800087W WO8805698A1 WO 1988005698 A1 WO1988005698 A1 WO 1988005698A1 EP 8800087 W EP8800087 W EP 8800087W WO 8805698 A1 WO8805698 A1 WO 8805698A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
core
casing
applicator according
scraper applicator
Prior art date
Application number
PCT/EP1988/000087
Other languages
German (de)
English (en)
Inventor
Herbert Sommer
Original Assignee
Jagenberg Aktiengesellschaft
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6320512&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1988005698(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Jagenberg Aktiengesellschaft filed Critical Jagenberg Aktiengesellschaft
Priority to AT88901583T priority Critical patent/ATE57480T1/de
Priority to DE8888901583T priority patent/DE3860821D1/de
Publication of WO1988005698A1 publication Critical patent/WO1988005698A1/fr
Priority to FI884637A priority patent/FI884637A0/fi

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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
    • B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
    • B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0817—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
    • 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/083—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets being passed between the coating roller and one or more backing rollers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56—Rolls
    • D21H23/58—Details thereof, e.g. surface characteristics, peripheral speed
    • D21H23/60—Details thereof, e.g. surface characteristics, peripheral speed the material on the applicator roll being subjected to a particular treatment before applying to the paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod

Definitions

  • Roller scraper on framework for applying coatings to material webs
  • the invention relates to a roller scraper applicator for direct or indirect application of coatings to material webs with a doctor rod rotatably mounted in a holder, resting on the material web or on a roller guiding the material web.
  • Roll scraper applicators of this type serve this purpose. Apply primer and top coats directly or indirectly to cardboard and paper.
  • Other, non-pigmented application media for example for surface cleaning. for coating or pretreating technical papers and films are possible.
  • Dry application weights from 0.5 to 20 g / m with the smoothest possible surface, i.e. with a good cross profile without streaking.
  • the thickness of the coating results from a balance of forces between the elastic pressure and the hydrodynamic liquid pressure of the maximras that arises in the wedge-shaped gap between the material web or the roller guiding the material web and the doctor rod.
  • Rotatable doctor rods made of solid steel are known and described in DE-PS 30 22 955. They are well suited for the metered application of pigment coats on paper, so that a desired one
  • doctor blades are less suitable. if a pigmented application medium is to be applied indirectly first to a rubberized roller or directly to a very smooth, closed web surface, for example a film.
  • the hydrodynamic fluid pressure is often so low that the contact pressure cannot be reduced as much as would be necessary without unevenness in the transverse profile, i.e. Streaks with lower and higher order result.
  • the object of the invention is to improve the roller scraper applicator in such a way that there is a wide coat weight range with a good cross profile on different web materials and with a wide variety of coating materials.
  • the doctor rod consists of a core and a sheathing with different elastic modulus.
  • Doctor rod made of solid material in relation to the pressure Reduce relatively high rigidity, so that the doctor rod lies evenly on the material web or aligns the surface of a counter roller.
  • the doctor rod according to the invention consisting of a core and a jacket with different elastic modulus is based on the knowledge that a reduction in the doctor rod diameter alone reduces its rigidity, but does not provide a solution to the problem, since with the reduction in the doctor rod diameter also the hydrodynamic liquid pressure due to the geometric change in the dosing zone, ie with the associated increase in the wedge angle, drops faster than the stiffness of the doctor rod decreases. Conversely, increasing the doctor rod diameter increases the hydrodynamic fluid pressure in the metering zone, but the fluid pressure increases more slowly than the stiffness of the doctor rod increases with increasing diameter.
  • the modulus of elasticity of the sheathing is preferably smaller than that of the core, which can advantageously be achieved in that the sheathing is made of plastic, for example PTFE or PVC, and the core is made of steel.
  • the core absorbs the torsional stress occurring in the doctor rod. while the flexible plastic coating brings the outside diameter to the value that is required for optimal coating.
  • the diameter of the steel core is preferably 6 to 10 mm and the outer diameter of the plastic sheathing is 10 to 20 mm.
  • the surface of the core can be structured to prevent the plastic jacket from shifting or slipping relative to the steel core. eg out of round and the example complementary inner surface of the casing to be positively connected to the surface "of the core.
  • a thin-walled, wear-resistant casing can be placed around the casing, which consists of an approximately 0.3 mm thick steel casing.
  • This embodiment is used in particular for the direct coating of paper webs, since increased wear of the elastic sheathing occurs in this application.
  • the squeegee rod is driven, preferably in the opposite direction to the counter-roller movement or to the material web movement, and is mounted in the holder by means of a squeegee bed from a compressed air hose, so that the contact pressure can be changed by changing the compressed air pressure on the hose.
  • the drawing serves to explain the invention using two exemplary embodiments.
  • the drawing shows:
  • Fig. 1 cutout a roller scraper for direct coating of a paper web which is guided around a counter roller.
  • the coating material is applied directly to a material web.
  • a counter roller 1 of which only one segment is shown. runs a material web 2 and is provided with a coating 3 predetermined square meter weight.
  • excess coating material is removed by means of a doctor rod 5 rotatably mounted in a holder 4.
  • This doctor rod 5 is driven counter to the direction of movement of the counter-roller 1 indicated by an arrow and displaces the unnecessary coating material downwards, where it drips into a tub (not shown).
  • the doctor rod 5 consists of a core 6 made of steel, on which the driving torque acts.
  • the core 6 is with a sheath 7 made of plastic, for example PTFE or PVC. provided and additionally has a wear-resistant shell 8, which in turn consists of steel. This wear-resistant sleeve 8 is required when the coating material and the material web 2 lead to increased abrasion of the doctor rod 5.
  • the doctor rod 5 is held in a doctor bed 9, which consists of a rubber hose with compressed air and a hollow chamber 10.
  • Air pressure in the hollow chamber 10 the contact pressure of the material web 2 and the coating material can be adjusted so that the line application has a perfect surface and its weight per square meter can be varied within wide limits.
  • E x I 0.85 x 10 N / mm only twice; it is still significantly below the bending resistance of a doctor rod of the same diameter made of solid steel.
  • the coating 3 is applied indirectly.
  • the material web 2 is only brought up to the roller when the coating 3 is applied in the manner described in a metered manner to the roller surface instead of to the material web.
  • the coating is then taken over by the material web which is brought up and around the roller 1.
  • the counter-rollers 1 Since the counter-rollers 1 have a rubber or rubber jacket, hardly any abrasion occurs on the doctor rods 5. These therefore do not require a wear-resistant casing. Their construction corresponds to the doctor rod shown in FIG. 1, with the wear-resistant casing 8 missing. The casing 7 of the doctor rods 5 is thus on the counter-rollers 1.
  • a roller applicator 11 with an ink pan 12 and an applicator roller 13 is used in both embodiments 1 ( Figure 2). Dosing to the desired coat weight is then carried out using the roller scrapers 5 according to the invention.

Landscapes

  • Coating Apparatus (AREA)

Abstract

Le mßcanisme applicateur décrit est destiné à l'application dosée directe ou indirecte d'enductions liquides (3) sur des matériaux en bande (2) au moyen d'une tige racleuse (5) montée rotative dans un support (9), en appui avec une pression variable sur le matériau en bande guidé autour d'un rouleau conjugué (1) ou sur un rouleau guidant le matériau en bande. Cette tige racleuse (5) est constituée par un noyau (6) à module d'élasticité élevé et par une enveloppe (7) à faible module d'élasticité et permet de produire des films d'enduction homogènes composés des matériaux les plus divers et ayant différentes épaisseurs.
PCT/EP1988/000087 1987-02-07 1988-02-06 Mecanisme applicateur a racloir roulant pour application d'enductions sur des materiaux en bande WO1988005698A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT88901583T ATE57480T1 (de) 1987-02-07 1988-02-06 Rollschaberauftragwerk zum auftragen von beschichtungen auf materialbahnen.
DE8888901583T DE3860821D1 (de) 1987-02-07 1988-02-06 Rollschaberauftragwerk zum auftragen von beschichtungen auf materialbahnen.
FI884637A FI884637A0 (fi) 1987-02-07 1988-10-07 Rullskrapbestrykningsmaskin foer utbredning av bestrykningsmedel pao en materialbana.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873703834 DE3703834A1 (de) 1987-02-07 1987-02-07 Rollschaberauftragwerk zum auftragen von beschichtungen auf materialbahnen
DEP3703834.6 1987-02-07

Publications (1)

Publication Number Publication Date
WO1988005698A1 true WO1988005698A1 (fr) 1988-08-11

Family

ID=6320512

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1988/000087 WO1988005698A1 (fr) 1987-02-07 1988-02-06 Mecanisme applicateur a racloir roulant pour application d'enductions sur des materiaux en bande

Country Status (4)

Country Link
EP (1) EP0301061B1 (fr)
DE (2) DE3703834A1 (fr)
FI (1) FI884637A0 (fr)
WO (1) WO1988005698A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0454643A1 (fr) * 1990-04-19 1991-10-30 Valmet Paper Machinery Inc. Dispositif d'enduction pour l'enduction d'un rouleau de presse d'encollage, papier ou carton
EP0533643A1 (fr) * 1991-09-16 1993-03-24 Valmet Paper Machinery Inc. Procédé et appareil pour le couchage d'un rouleau de presse encolleuse, de papier ou de carton
EP0541502A1 (fr) * 1991-11-06 1993-05-12 Valmet Corporation Procédé et équipement pour garder propre la baguette de couchage et son support dans une coucheuse à baguette, et pour empêcher les fuites d'eau de lubrification et/ou de refroidissement
WO1994000637A1 (fr) * 1992-06-24 1994-01-06 J.M. Voith Gmbh Barre de raclage
WO1995016074A1 (fr) * 1993-12-06 1995-06-15 Jagenberg Papiertechnik Gmbh Systeme de dosage pour dispositifs destines au couchage de bandes de materiaux, en particulier de bandes de papier ou de carton
WO2000028142A1 (fr) * 1998-11-09 2000-05-18 Metso Paper, Inc. Lame de couchage
JP2013237000A (ja) * 2012-05-14 2013-11-28 Jfe Steel Corp 塗装装置

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937749A1 (de) * 1989-11-14 1991-05-16 Jagenberg Ag Rakelstange zum volumetrischen dosieren von beschichtungsmaterial
DE29609053U1 (de) * 1996-05-20 1996-08-22 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zum direkten oder indirekten Auftragen oder Enddosieren eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
FI106139B (fi) * 1999-03-26 2000-11-30 Valmet Corp Sauvakaavin
JP2002239431A (ja) * 2001-02-13 2002-08-27 Mitsubishi Heavy Ind Ltd 塗工装置及び塗工紙の製造方法
DE102005009590A1 (de) * 2005-02-25 2006-08-31 Kiener Maschinenbau Gmbh Dosiervorrichtung und Zusatzrakel für Dosiervorrichtung
SE531394C2 (sv) 2005-08-30 2009-03-17 Mattssonfoeretagen I Uddevalla Ab Anordning och metod för bestrykning
CN113106780A (zh) * 2021-04-19 2021-07-13 刘小建 抗菌牛皮纸及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB837072A (en) * 1957-06-03 1960-06-09 Warren S D Co Improvements relating to the production of coated paper
DE2307404A1 (de) * 1973-02-15 1974-08-22 Jagenberg Werke Ag Vorrichtung zum regeln der auftragsstaerke beim beschichten laufender werkstoffbahnen
GB1449993A (en) * 1973-10-01 1976-09-15 American Can Co Method and apparatus for distributing plastics on an irregular wokpiece surface
DE3025689A1 (de) * 1980-07-07 1982-01-21 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum einlegen von rakelstangen
DE3022955C2 (de) * 1980-06-19 1982-12-16 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum Regeln der Auftragsstärke beim Beschichten laufender Materialbahnen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3931786A (en) * 1974-02-13 1976-01-13 Riegel Textile Corporation Apparatus for coating a web of material with a liquid
GB1486142A (en) * 1975-03-10 1977-09-21 Wiggins Teape Ltd Coating apparatus
JPS57156066A (en) * 1981-03-20 1982-09-27 Fuji Photo Film Co Ltd Method and device for coating

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB837072A (en) * 1957-06-03 1960-06-09 Warren S D Co Improvements relating to the production of coated paper
DE2307404A1 (de) * 1973-02-15 1974-08-22 Jagenberg Werke Ag Vorrichtung zum regeln der auftragsstaerke beim beschichten laufender werkstoffbahnen
GB1449993A (en) * 1973-10-01 1976-09-15 American Can Co Method and apparatus for distributing plastics on an irregular wokpiece surface
DE3022955C2 (de) * 1980-06-19 1982-12-16 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum Regeln der Auftragsstärke beim Beschichten laufender Materialbahnen
DE3025689A1 (de) * 1980-07-07 1982-01-21 Jagenberg-Werke AG, 4000 Düsseldorf Vorrichtung zum einlegen von rakelstangen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0454643A1 (fr) * 1990-04-19 1991-10-30 Valmet Paper Machinery Inc. Dispositif d'enduction pour l'enduction d'un rouleau de presse d'encollage, papier ou carton
EP0674048A3 (fr) * 1990-04-19 1999-04-28 Valmet Corporation Dispositif d'enduction pour l'enduction d'un rouleau de presse d'encollage, papier ou carton
EP0674047A3 (fr) * 1990-04-19 1999-04-28 Valmet Corporation Dispositif d'enduction pour l'enduction d'un rouleau de presse d'encollage, papier ou carton
EP0533643A1 (fr) * 1991-09-16 1993-03-24 Valmet Paper Machinery Inc. Procédé et appareil pour le couchage d'un rouleau de presse encolleuse, de papier ou de carton
EP0541502A1 (fr) * 1991-11-06 1993-05-12 Valmet Corporation Procédé et équipement pour garder propre la baguette de couchage et son support dans une coucheuse à baguette, et pour empêcher les fuites d'eau de lubrification et/ou de refroidissement
WO1994000637A1 (fr) * 1992-06-24 1994-01-06 J.M. Voith Gmbh Barre de raclage
WO1995016074A1 (fr) * 1993-12-06 1995-06-15 Jagenberg Papiertechnik Gmbh Systeme de dosage pour dispositifs destines au couchage de bandes de materiaux, en particulier de bandes de papier ou de carton
WO2000028142A1 (fr) * 1998-11-09 2000-05-18 Metso Paper, Inc. Lame de couchage
JP2013237000A (ja) * 2012-05-14 2013-11-28 Jfe Steel Corp 塗装装置

Also Published As

Publication number Publication date
EP0301061B1 (fr) 1990-10-17
FI884637A (fi) 1988-10-07
DE3860821D1 (de) 1990-11-22
DE3703834A1 (de) 1988-08-18
EP0301061A1 (fr) 1989-02-01
FI884637A0 (fi) 1988-10-07

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