EP0301061B1 - 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
EP0301061B1
EP0301061B1 EP88901583A EP88901583A EP0301061B1 EP 0301061 B1 EP0301061 B1 EP 0301061B1 EP 88901583 A EP88901583 A EP 88901583A EP 88901583 A EP88901583 A EP 88901583A EP 0301061 B1 EP0301061 B1 EP 0301061B1
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EP
European Patent Office
Prior art keywords
ductor
core
roll
sheathing
web
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.)
Expired - Lifetime
Application number
EP88901583A
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German (de)
English (en)
Other versions
EP0301061A1 (fr
Inventor
Herbert Sommer
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.)
Jagenberg AG
Original Assignee
Jagenberg AG
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Filing date
Publication date
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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=EP0301061(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Jagenberg AG filed Critical Jagenberg AG
Priority to AT88901583T priority Critical patent/ATE57480T1/de
Publication of EP0301061A1 publication Critical patent/EP0301061A1/fr
Application granted granted Critical
Publication of EP0301061B1 publication Critical patent/EP0301061B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

  • 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.
  • Roller scraper applicators of this type are used to apply primers and top coats directly or indirectly to cardboard and paper.
  • Other, non-pigmented application media for example for surface gluing, for coating or pretreating technical papers and films, are also suitable.
  • dry application weights 0.5 to 20 g / m 2 are sought with a surface that is as smooth as possible, ie with a good cross profile without streaking.
  • the thickness of the coating is established on the basis of an equilibrium of forces between the elastic pressure and the hydrodynamic liquid pressure of the application medium which 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 coat weight range with a good cross profile can be covered as far as possible.
  • 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 any irregularities 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 in the case of a roller scraper applicator of the type mentioned at the outset, the doctor rod consists of a core and a sheathing with different elastic modulus. In this way, the relatively high rigidity in relation to the contact pressure can be reduced in the case of a doctor rod made of solid material, so that the doctor rod lies evenly against 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 a different modulus of elasticity, 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, 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.
  • 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 that occurs 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, e.g. out of round and the complementary inner surface of the casing, for example, 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 supply to the hose.
  • the coating material is applied directly to a material web.
  • a material web 2 runs around a counter roller 1, of which only one segment is shown, and is provided with a coating 3 of a 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 superfluous 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 drive torque acts.
  • the core 6 is provided with a casing 7 made of plastic, for example PTFE or PVC, and additionally has a wear-resistant casing 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 compressed air rubber tube with a hollow chamber 10.
  • a doctor bed 9 which consists of a compressed air rubber tube with a hollow chamber 10.
  • the modulus of elasticity of PTFE is approximately 400 N / mm 2 and that of steel is approximately 210,000 N / mm 2
  • the bending resistance of the doctor rod according to the invention is thus only about a fifth of that of a doctor rod 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 has been applied in the manner described to the roller surface instead of onto the material web.
  • the coating is then taken over by the material web guided 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 application roller 13 is used in both embodiments.
  • the application rollers 13 scoop the coating material from the ink trays 12 and carry it in excess on the material web 2 (FIG. 1) or the counter-rollers 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.

Claims (9)

1. Applicateur à racloir roulant pour l'application directe ou indirecte de revêtements sur un matériau en bande avec une raclette tournant dans un support et s'appuyant sur le matériau en bande ou sur un cylindre guidant le matériau en bande, caractérisé en ce que la raclette (5) se compose d'un coeur (6) et d'une enveloppe (7) qui présentent des modules d'élasticité différents.
2. Applicateur à racloir roulant suivant la revendication 1, caractérisé en ce que le module d'élasticité de l'enveloppe (7) est plus faible que celui du coeur (6).
3. Applicateur à racloir roulant suivant l'une des revendications 1 et 2, caractérisé en ce que l'enveloppe (7) est constituée de matériau plastique et en ce que le coeur (6) est constitué d'acier.
4. Applicateur à racloir roulant suivant la revendication 3, caractérisé en ce que le diamètre du coeur en acier (6) est compris entre 6 et 10 mm et le diamètre extérieur de l'enveloppe en matériau plastique (7) entre 10 et 20 mm.
5. Applicateur à racloir roulant suivant l'une ou l'autre des revendications 1 à 4, caractérisé en ce que la surface du coeur (6) est profilée et en ce que la surface intérieure de l'enveloppe (7) est calée sur la forme de la surface extérieure du coeur.
6. Applicateur à racloir roulant suivant l'une ou l'autre des revendications 2 à 5, caractérisé en ce qu'une mince gaine résistant à l'usure (8) entoure l'enveloppe (7).
7. Applicateur à racloir roulant suivant l'une ou l'autre des revendications 1 à 6, caractérisé en ce que la raclette (5) est entraînée.
8. Applicateur à racloir roulant suivant la revendication 7, caractérisé en ce que la raclette (5) est entraînée en sens contraire par rapport au mouvement du matériau en bande, respectivement du cylindre guidant le matériau en bande.
9. Applicateur à racloir roulant suivant l'une ou l'autre des revendications 1 à 8, caractérisé en ce que la raclette (5) est posée dans le support (4) sur un appui (9) formé par un tuyau souple rempli d'air comprimé.
EP88901583A 1987-02-07 1988-02-06 Mecanisme applicateur a racloir roulant pour application d'enductions sur des materiaux en bande Expired - Lifetime EP0301061B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88901583T ATE57480T1 (de) 1987-02-07 1988-02-06 Rollschaberauftragwerk zum auftragen von beschichtungen auf materialbahnen.

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
DE3703834 1987-02-07

Publications (2)

Publication Number Publication Date
EP0301061A1 EP0301061A1 (fr) 1989-02-01
EP0301061B1 true EP0301061B1 (fr) 1990-10-17

Family

ID=6320512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88901583A Expired - Lifetime EP0301061B1 (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) FI884637A (fr)
WO (1) WO1988005698A1 (fr)

Families Citing this family (14)

* 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
FI88421C (fi) * 1990-04-19 1993-05-10 Valmet Paper Machinery Inc Bestrykningsanordning foer bestrykning av vals i en limpress, papper eller kartong
FI91299C (fi) * 1991-09-16 1994-06-10 Valmet Paper Machinery Inc Menetelmä ja päällystyslaite liimapuristimen telan, paperin tai kartongin päällystämiseksi
FI90268C (fi) * 1991-11-06 1994-01-10 Valmet Paper Machinery Inc Menetelmä ja laitteisto sauvapäällystimen päällystyssauvan ja sauvakehdon puhtaana pitämiseksi ja käytettävän voitelu- ja/tai jäähdytysvedenvuotamisen estämiseksi
DE4220603A1 (de) * 1992-06-24 1994-01-13 Voith Gmbh J M Rakelstab
DE4341341C1 (de) * 1993-12-06 1995-03-09 Jagenberg Ag Dosiersystem für Vorrichtungen zum Beschichten von Materialbahnen, insbesondere Papier- oder Kartonbahnen
DE29609053U1 (de) * 1996-05-20 1996-08-22 Voith Sulzer Papiermasch Gmbh Vorrichtung zum direkten oder indirekten Auftragen oder Enddosieren eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn
FI104103B (fi) * 1998-11-09 1999-11-15 Valmet Corp Päällystyssauva
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
JP5884985B2 (ja) * 2012-05-14 2016-03-15 Ｊｆｅスチール株式会社 塗装装置
CN113106780A (zh) * 2021-04-19 2021-07-13 刘小建 抗菌牛皮纸及其制备方法

Family Cites Families (8)

* 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
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
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
JPS57156066A (en) * 1981-03-20 1982-09-27 Fuji Photo Film Co Ltd Method and device for coating

Also Published As

Publication number Publication date
FI884637A0 (fi) 1988-10-07
DE3703834A1 (de) 1988-08-18
EP0301061A1 (fr) 1989-02-01
WO1988005698A1 (fr) 1988-08-11
DE3860821D1 (de) 1990-11-22
FI884637A (fi) 1988-10-07

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