EP1896190B1 - Enduction sur la ligne de contact - Google Patents

Enduction sur la ligne de contact Download PDF

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Publication number
EP1896190B1
EP1896190B1 EP06762321A EP06762321A EP1896190B1 EP 1896190 B1 EP1896190 B1 EP 1896190B1 EP 06762321 A EP06762321 A EP 06762321A EP 06762321 A EP06762321 A EP 06762321A EP 1896190 B1 EP1896190 B1 EP 1896190B1
Authority
EP
European Patent Office
Prior art keywords
coating material
application
gap
supply chamber
roller
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
EP06762321A
Other languages
German (de)
English (en)
Other versions
EP1896190A1 (fr
Inventor
Ferdinand Krebs
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.)
Polytype Converting SA
Original Assignee
Polytype Converting SA
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 Polytype Converting SA filed Critical Polytype Converting SA
Publication of EP1896190A1 publication Critical patent/EP1896190A1/fr
Application granted granted Critical
Publication of EP1896190B1 publication Critical patent/EP1896190B1/fr
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
    • 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
    • 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
    • B05C1/0813—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 supplying liquid or other fluent material to the roller
    • 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
    • B05C1/086—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 a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith
    • 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
    • B05C1/086—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 a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith
    • B05C1/0865—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 a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith the cooperating element being a roller, e.g. a coating roller

Definitions

  • the invention relates to a method and an apparatus for the continuous coating of a moving web material with a viscous medium, in particular a solvent-based paint or with an adhesive solution.
  • the invention relates in particular to a device which is suitable for so-called "flow-up".
  • a device for applying a coating liquid to a moving web with a applicator roll rotatably arranged in a frame, a storage chamber for the coating medium arranged vertically in connection therewith and a metering doctor is eliminated DE 28 20 249 known.
  • foaming in the application unit in particular in the storage area of the coating medium, has proven to be disadvantageous in the case of the application units known from the prior art.
  • Foam formation is caused by air pockets due to the increased peripheral speed of the applicator rollers in the application medium.
  • the foaming is adversely visibly perceptible as air pockets on the coating substrate.
  • foaming is a hindrance in controlling the volume flow for the application medium.
  • Other disadvantages of foam formation are in the DE 28 20 249 described.
  • the US 4,538,541 describes an apparatus and method for applying a uniform layer of liquid to a surface.
  • the apparatus may comprise two applicator rollers which together form an NIP nip which can be adjusted to control the amount applied.
  • the object of the invention is to provide a device and a method for uniform application of a viscous coating medium, in particular solvent-containing paints or adhesives, on a moving support material with which the foaming is prevented by air pockets.
  • the inventive device consists of a storage chamber for the agent to be applied and at least two rollers, preferably exactly two rollers, with substantially parallel axes of rotation, wherein the rollers extend into the storage chamber and between at least two adjacent rollers form a nip, preferably a NIP nip ,
  • the NIP nip differs from a normal nip in that the size of the nip formed by the smallest distance between the two surfaces of two rolls is adjustable. This can be done by, for example, one of the rollers or two or more rollers being adjustable, so that the distance between the axes of rotation of the rollers changes.
  • At least one, preferably all rollers are rotationally driven.
  • the rollers may have a common drive or be driven individually by an electric motor, for example, whereby each of the at least two rollers can rotate at a different speed than each of the other.
  • the direction of rotation of the rolls may be rectified, but it is preferred that the two rolls forming the NIP nip together rotate in opposite directions.
  • the directions of rotation are chosen so that both rollers forming the NIP nip transport the coating material from a storage chamber into the NIP nip.
  • one of the two rollers is a rubber roller, the other a steel roller. In principle, however, it should not be ruled out that both rolls are rubber or steel rolls or other suitable rolls.
  • the axes of rotation of the rollers lie in a preferred embodiment on a straight line which is largely perpendicular to the web to be coated in the area where the coating takes place. This results in an arrangement of the storage chamber side of the rollers, as well as a largely horizontal orientation of the NIP roller gap.
  • the standing vertically arranged storage chamber is on the one longitudinal side, that is, the side whose extension extends in the direction of the straight line on which the axes of rotation of the rollers lie, through the rollers, on the other longitudinal side by a rear wall, e.g. made of metal.
  • the chamber also has side walls as well as the top and bottom of the chamber forming walls.
  • the longitudinal extent of the storage chamber is shorter than the distance between the point on the uppermost roll in which the straight line formed by the axes of rotation of the rolls breaks upwards and the point on the lowermost roll in which the straight line formed by the axes of rotation breaks them down. In other words, the top roller and the bottom roller are seen in the longitudinal direction beyond the pantry.
  • the reservoir can also protrude beyond the upper and / or lower roll or have the same vertical extent as the entirety of the rolls.
  • the straight line formed by the axes of rotation can also have an arbitrary angle of inclination to the carrier web in the region of the coating; in an extreme case, it can be arranged horizontally. In the latter case, the NIP nip would then be a vertical gap and the storage chamber would be located above or below the rollers.
  • the lateral extent of the storage chamber meaning the extension in the direction of the longitudinal axis of the rollers, is adjustable.
  • carrier material of different widths can be coated, or different widths of coating material can be applied to a carrier material.
  • a plurality of strips of coating material are to be applied next to one another onto the carrier material, either a plurality of narrow storage chambers can be arranged alongside one another along the cylinders, or the storage chamber can be arranged transversely, that is to say along the Longitudinal axis of the rollers, subdivided into areas that can be fed either all or individually with coating material.
  • the side walls of the storage chamber for example, on elastic seals, which seal them in the area of the rollers. In the direction of the roller longitudinal axis, the storage chamber is sealed to the uppermost and the lowermost roller by means of, for example, likewise elastic seals or doctor blades
  • the coating material is fed into the storage chamber through at least one inlet and conveyed out of the storage chamber by at least one overflow.
  • the coating material is continuously supplied in an amount which is above the amount required for coating. If the inlet or the inlets are, as preferred, attached to or near the lower end of the storage chamber, the outlet or the outlets on the other hand, at the uppermost end of the storage chamber, the storage chamber is always filled with coating material, whereby the risk of air inclusions Coating material is reduced.
  • the coating material flowing through the overflow is preferably collected and returned to the process.
  • this further NIP nip runs the carrier material and is coated by the applicator roll with the coating material.
  • Between the NIP nip for metering the coating material and the other NIP nip is on the side facing away from the storage chamber side of the top application roller employed a squeegee to safely prevent air pockets in the coating material.
  • the pantry can be mounted on one side or the other of the applicator rollers, depending on whether it is a countercurrent or countercurrent coating.
  • Countercurrent coating is understood to mean a coating of the carrier material in which the applicator roll rotates counter to the web run, while in the case of the follower coating the applicator roll rotates in the direction of the web run.
  • the object is achieved with a commissioned work (1; 2) with horizontal NIP nip (3.1; 3.2) for the metering of the application medium and a vertically arranged supply chamber (4.1; 4.2) in operative connection according to FIGS Figures 1; 2 ,
  • the horizontal NIP nip (3.1; 3.2) is formed between the applicator rolls (W1) and (W2).
  • the vertical storage chamber may be arranged to one side or the other of the applicator rollers (W1, W2). In the opposite process ( Fig.
  • the peripheral speed of the rubber roller (W3) corresponds to the web speed, up to about 450 m / min.
  • the peripheral speed of the steel roller (W2) is more controllable from about 30 to 200% and the peripheral speed of the rubber roller (W1) is about 5 to 50% of the web speed.
  • the peripheral speeds of the rollers (W1, W2) are mutually adjustable.
  • the supply volume of the application medium to the storage chamber is about the 1.5-flat of the consumption volume.
  • the supply of the application medium into the storage chamber takes place approximately horizontally via a suitable supply line at the lower end of the storage chamber.
  • the current flow of the application medium in the pantry is vertically from below still up.
  • the coating medium on the web (S) is transferred in the NIP nip between the roll (W2) and the roll (W3).
  • the counter rotating applicator rollers (W1, W2) convey the application medium horizontally into the NIP nip.
  • the rollers (W1, W2) are vertically adjustable.
  • the distance of the rear vertical end wall of the storage chamber is horizontally adjustable to the applicator rollers (W1, W2) and the side walls, so that changed volume in the pantry can be.
  • a suitable doctor blade for example a knife blade provided for sealing the storage chamber (4.1, 4.2) is at the lower end in operative connection with the roller (W1).
  • a suitable doctor blade for example a knife blade provided.
  • the storage chamber is closed in operative connection with the rollers (W1, W2) with side walls.
  • the entire storage chamber can be moved away from the rollers (W1, W2) by suitable means.
  • an overflow (9) is formed, via which the volume flow supplied in excess can flow to the rear wall of the storage chamber.
  • a collecting device (5) with an outflow (6) below the applicator (1; 2) picks up the application medium supplied in excess.
  • To protect the application medium can be arranged over the vertical pantry wall, an outer cover.
  • a doctor blade (10) is set against the applicator roller (W2) forming the gap for the carrier material (S) on the side facing away from the storage chamber (4.1; 4.2) in order to prevent even more sure air inclusions in the coating material (7).

Landscapes

  • Coating Apparatus (AREA)

Claims (10)

  1. Dispositif pour appliquer un matériau de revêtement liquide (7) sur un matériau de substrat (S) en forme de bande, en mouvement, comportant :
    a) un bâti de rouleaux,
    b) des rouleaux applicateurs (W1, W2) montés de manière à pouvoir tourner à partir du bâti de rouleaux, lesquels rouleaux applicateurs forment un espacement entre rouleaux NIP (3.1 ; 3.2) pour le dosage du matériau de revêtement (7) et les rouleaux applicateurs supérieurs (W2) formant conjointement l'espacement d'application pour appliquer le matériau de revêtement (7) sur le matériau de substrat (S),
    c) une racle (10) qui peut être appliquée sur l'un des rouleaux applicateurs (W1, W2),
    d) et une chambre d'alimentation (4.1 ; 4.2) pour le matériau de revêtement (7),
    e) dans lequel les rouleaux applicateurs (W1, W2) font saillie suffisamment loin dans la chambre d'alimentation (4.1 ; 4.2) pour que le matériau de revêtement (7) contenu dans la chambre d'alimentation (4.1 ; 4.2) remplisse un espace intermédiaire restant entre les rouleaux applicateurs (W1, W2) et suffisant jusque dans l'espacement entre rouleaux NIP (3.1 ; 3.2),
    caractérisé en ce que
    f) la racle (10) peut être appliquée sur le rouleau applicateur supérieur (W2) formant conjointement l'espacement d'application pour le matériau de substrat (S) sur son côté opposé à la chambre d'alimentation entre l'espacement entre rouleaux NIP (3.1 ; 3.2) et l'espacement d'application, afin d'empêcher la formation de bulles d'air à partir du matériau de revêtement (7) avant l'application sur le matériau de substrat (S).
  2. Dispositif selon la revendication 1, dans lequel la chambre d'alimentation (4.1 ; 4.2) est agencée verticalement à côté des rouleaux applicateurs (W1, W2).
  3. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les rouleaux applicateurs (W1, W2) sont immergés dans le matériau de revêtement (7) contenu dans la chambre d'alimentation (4.1 ; 4.2) et la zone de surface immergée du rouleau applicateur (W1, W2) respectif s'étend à partir de l'espacement entre rouleaux NIP (3.1 ; 3.2) sur un angle d'arc d'au moins 40°, de manière préférée d'au moins 60° et de manière encore plus préférée d'au moins 90°.
  4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la chambre d'alimentation (4.1 ; 4.2) comporte une entrée (8) pour le matériau de revêtement (7) qui est agencée plus bas que l'espacement entre rouleau NIP (3.1 ; 3.2).
  5. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la chambre d'alimentation (4.1 ; 4.2) comporte une entrée (8) pour le matériau de revêtement (7) dans une zone partielle inférieure de la chambre d'alimentation (4.1 ; 4.2).
  6. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la chambre d'alimentation (4.1 ; 4.2) comporte une sortie (9) pour le matériau de revêtement (7) qui est agencée plus haut que l'espacement entre rouleaux NIP (3.1 ; 3.2), de préférence sur une extrémité supérieure de la chambre d'alimentation (4.1 ; 4.2).
  7. Dispositif selon la revendication précédente, caractérisé en ce que la sortie (9) est formée comme un trop-plein.
  8. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un écoulement vertical du matériau de revêtement (7), de préférence entre une entrée inférieure (8) et une sortie supérieure (9), est maintenu pendant l'application du matériau de revêtement (7) dans la chambre d'alimentation (4.1 ; 4.2).
  9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un rouleau (W3) guidant le matériau de substrat (S), lequel rouleau forme avec l'un des rouleaux applicateurs (W1, W2) un espacement pour le matériau de substrat (S), est agencé de manière au moins sensiblement verticale au-dessus de ce rouleau applicateur (W2).
  10. Procédé pour appliquer un matériau de revêtement liquide (7) sur un matériau de substrat (S) en forme de bande, en mouvement, comportant les étapes consistant à :
    a) doser le matériau de revêtement (7) par l'intermédiaire d'un espacement entre rouleaux NIP (3.1 ; 3.2) formé par des rouleaux applicateurs (W1, W2) et
    b) l'appliquer sur le matériau de substrat (S) par l'intermédiaire du rouleau applicateur supérieur (W2) dans un espacement d'application,
    c) et immerger les rouleaux applicateurs (W1, W2) dans le matériau de revêtement (7) suffisamment loin pour que le matériau de revêtement (7) remplisse un espace intermédiaire restant entre les rouleaux applicateurs (W1, W2) de manière cohésive jusque dans l'espacement entre rouleaux NIP (3.1 ; 3.2),
    caractérisé par l'étape consistant à :
    d) au moyen d'une racle (10) applicable sur le rouleau applicateur supérieur (W2) entre l'espacement entre rouleaux NIP (3.1 ; 3.2) et l'espacement d'application, empêcher la formation de bulles d'air à partir du matériau de revêtement (7) avant l'application sur le matériau de substrat (S).
EP06762321A 2005-06-30 2006-06-30 Enduction sur la ligne de contact Not-in-force EP1896190B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005030945A DE102005030945A1 (de) 2005-06-30 2005-06-30 NIP-Beschichtung
PCT/EP2006/006390 WO2007003376A1 (fr) 2005-06-30 2006-06-30 Enduction sur la ligne de contact

Publications (2)

Publication Number Publication Date
EP1896190A1 EP1896190A1 (fr) 2008-03-12
EP1896190B1 true EP1896190B1 (fr) 2012-10-24

Family

ID=37027406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06762321A Not-in-force EP1896190B1 (fr) 2005-06-30 2006-06-30 Enduction sur la ligne de contact

Country Status (4)

Country Link
US (1) US20090232998A1 (fr)
EP (1) EP1896190B1 (fr)
DE (1) DE102005030945A1 (fr)
WO (1) WO2007003376A1 (fr)

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DE102007039949B3 (de) * 2007-08-23 2008-12-04 Flooring Technologies Ltd. Vorrichtung zum Auftragen einer Suspension auf eine Trägerplatte
JP5031626B2 (ja) * 2008-03-14 2012-09-19 富士フイルム株式会社 液体塗布装置及び方法並びに画像形成装置
US11220409B2 (en) * 2011-10-31 2022-01-11 Ncr Corporation Single item removal
EP3851210A1 (fr) * 2020-01-14 2021-07-21 Jesús Francisco Barberan Latorre Rouleau applicateur

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Also Published As

Publication number Publication date
EP1896190A1 (fr) 2008-03-12
DE102005030945A1 (de) 2007-01-11
WO2007003376A1 (fr) 2007-01-11
US20090232998A1 (en) 2009-09-17

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