EP1618967A1 - Appareil pour appliquer un vernis sur un film - Google Patents

Appareil pour appliquer un vernis sur un film Download PDF

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Publication number
EP1618967A1
EP1618967A1 EP05005644A EP05005644A EP1618967A1 EP 1618967 A1 EP1618967 A1 EP 1618967A1 EP 05005644 A EP05005644 A EP 05005644A EP 05005644 A EP05005644 A EP 05005644A EP 1618967 A1 EP1618967 A1 EP 1618967A1
Authority
EP
European Patent Office
Prior art keywords
film
coating roller
roller
varnish
onto
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.)
Withdrawn
Application number
EP05005644A
Other languages
German (de)
English (en)
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.)
DeMaxZ AG
Original Assignee
DeMaxZ AG
DeMaxz Deutschland 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 PCT/US2005/005522 external-priority patent/WO2005081915A2/fr
Application filed by DeMaxZ AG, DeMaxz Deutschland GmbH filed Critical DeMaxZ AG
Publication of EP1618967A1 publication Critical patent/EP1618967A1/fr
Withdrawn legal-status Critical Current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
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, 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
    • B05C1/0856—Reverse coating 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
    • B05C1/0826—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
    • B05C1/0826—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
    • B05C1/0834—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 the coating roller co-operating with other rollers, e.g. dosing, transfer rollers

Definitions

  • the invention is concerned with an apparatus for applying varnish or lacquer onto a film.
  • Said flexible film may preferably have so-called release properties such that the layer of varnish can be transferred from said film onto an object, e.g. after curing (cross-linking) or partial curing of the varnish, by peeling off the varnish layer.
  • Films having so-called release properties are well known in the prior art; see for example, EP 1 053 793 A1 and EP 0 573 676 B1.
  • the prior art includes both paper- based films and films made of a resin, the surfaces of which are prepared such that the film comprises release properties.
  • layers of colour or varnish are applied to such a film having release properties, the layers can be transferred onto an object to be decorated in such a way that the layers of varnish and colour are peeled off from the film.
  • EP 1 053 793 A1 teaches the application of varnish and colour onto an object by means of a release film, wherein a glue is applied on top of the varnish and colour layers of the release film. When transferring said layers onto the object to be decorated, the glue is in direct contact with said object.
  • the present invention is, in particular, directed to applying a varnish layer onto such a film which, preferably, has release properties.
  • Said film may be printed, before or after applying said varnish layer, with a colour layer.
  • the films in question here typically have a width of more than 100 cm, e.g. a width in the range of 160 to 180 cm.
  • the machines according to the prior art were capable of applying varnish layers having a thickness typically less than 60 ⁇ m.
  • the present invention aims at providing an apparatus that is capable to be adapted to apply a variety of varnish layers of different thickness, in particular relatively thick varnish layers.
  • the present invention teaches an apparatus for applying varnish onto a film, said apparatus comprising:
  • the means for advancing the film advances the film in a first direction through the gap between the coating roller and the pressure roller, and the means for rotating the coating roller rotates the coating roller such that the circumference of the coating roller adjacent the film moves in a second direction opposite to said first direction.
  • said film before entering said gap defines an angle ( ⁇ ) different from zero with a plane that is tangential to both the coating roller and the pressure roller.
  • said coating roller comprises a rubber surface.
  • means are provided for moving at least one of said pressure roller or coating roller in a direction parallel to said plane that is tangential to both the coating roller and the pressure roller.
  • the figure shows schematically an apparatus for applying varnish onto a film.
  • the apparatus comprises a coating roller 10 and a pressure roller 12. Pressure rollers are also sometimes called “counter rollers”. The pressure roller 12 is driven. The circumferential speed of the pressure roller 12 defines the speed of the film through the apparatus.
  • a dosing roller 14 is arranged adjacent the coating roller 10 for transferring varnish from a supply (not shown) onto the coating roller 10.
  • a plane 16 is tangential to both the coating roller 10 and the pressure roller 12, i.e. the plane 16 passes in-between the rollers, which are adjacent to each other.
  • a film 18 having release properties is advanced in the figures from the right hand side to the left hand side.
  • the coating roller 10 is rotated around its axis 20 in an anti-clockwise direction as indicated by arrow 46 in the figure.
  • the drive of the coating roller is conventional and is not shown.
  • Pressure roller 12 rotates about its axis 22.
  • Pressure roller 12 is driven by a drive (not shown) at the speed at which the film 18 is advanced.
  • the film 18 is guided via rollers 24 and 26 such that, before being advanced between the coating roller and the pressure roller, it is not positioned in the tangential plane 16, but rather defines an angle ⁇ between the film 18 and the tangential plane 16, as indicated in the figure. That angle ⁇ is acute, and is preferably in the range between about 10° and 30°.
  • film 18 is advanced in the figure from right to left.
  • Pulling means for pulling the film in the direction 42 are not shown, but they are typically arranged in the figure to the left of the coating roller 10 and the pressure roller 12.
  • a driven collecting roller would be suitable for pulling the film in the direction 42.
  • Varnish is transferred by the coating roller 10 onto the film 18, and in particular onto the upper surface of film 18, as shown in the figure.
  • the varnish is, preferably, curable by so-called cross-linking, which as such is well known in the art.
  • curing means (not shown) may be arranged to the left of the coating roller 10 and the pressure roller 12.
  • a varnish container 28 is arranged underneath the pressure roller 12 to collect excess varnish not used for coating the film 18, e.g. varnish applied at the edges of the film 18.
  • Pressure roller 12 always rotates anti-clockwise as indicated by the arrow.
  • Coating knifes 36, 38 are arranged to control the transfer of varnish from the dosing roller onto the coating roller, as is known in the art as such.
  • the coating roller 10 and the dosing roller 14 rotate typically in opposite directions, as indicated by the arrows 46, 48.
  • the coating roller 10 may have a typical diameter in the range between 180 and 300 mm, preferably about 240 mm.
  • the pressure roller 12 may have the same dimensions.
  • the dosing roller 14 has a diameter in the range of 100 to 200 mm, preferably about 160 mm. The dosing roller 14 is smaller than the coating roller.
  • the width of the film is typically 160 to 180 cm.
  • a soft knife 40 is arranged near the varnish collecting container 28 in order to clean the pressure roller 12 from excess or non-used varnish.
  • the film 18 is advanced in the direction of arrow 42.
  • the film 18 passes through a gap 44 between the coating roller 10 and the pressure roller 12.
  • the direction of rotation 46 of coating roller 10 and the speed of rotation are controlled such that the circumference of the coating roller 10 adjacent the film 18, i.e. the circumference of the coating roller actually transferring the varnish onto the film, is moving in the opposite direction with reference to the movement of the film. Therefore, the circumferential surface of the coating roller 10 has a velocity relative to the velocity of the film 18 in the opposite direction. That is, in a (moving) coordinate system in which the film 18 is at rest, the circumferential surface of the coating roller 10, which transfers the varnish onto the film, moves relative to the film with a definite velocity different from zero. Most preferably, in a stationary (non-moving) coordinate system (i.e.
  • the coating roller 10 has a circumferential surface that rotates counter-clockwise as indicated by arrow 46 in the figure.
  • the dosing roller 14 rotates in a direction opposite to the direction of rotation of the coating roller 10, i.e. dosing roller 14 rotates clockwise.
  • the speed of advancement (velocity) of the film 18 in direction 42 may be in a range of 1-50 m/min, preferably 10 to 20 m/min. If the speed of advancement (velocity) of the film 18 is 20 m/min, the preferred rotational speed of the coating roller 10 is such that its surface velocity is 10 m/min. Generally speaking, if the speed of advancement of the film 18 is X, the rotational speed of the coating roller is such that its surface velocity is in a range of 30-70% of X.
  • the afore-mentioned velocities are in the same direction, i.e. the film is advanced in direction 42 and the coating roller rotates clockwise.
  • the coating roller may rotate anti-clockwise in direction of arrow 46 with surface velocities in the range of 10-5 m/min.
  • the velocities are adjusted in accordance with the specific requirements of the varnish coating to be applied onto the film, in particular the thickness of the varnish and the properties of the varnish.
  • the coating roller 10 may also rotate clockwise (i.e. opposite to arrow 46) with a circumferential speed smaller than the speed of advancement of the film 18 in the direction of arrow 42.
  • the speed of advancement of film 18 in direction of arrow 42 is 10 m/min
  • the circumferential speed of coating roller 10 in clockwise direction can be adjusted to be between 3 m/min and 7 m/min, resulting in a corresponding relative speed between be circumference of the coating roller and the film.
  • the amount of varnish applied onto the film 18 can be controlled as follows: varnish 50 is fed in between the coating roller 10 and the dosing roller 14 as shown in the drawing. By adjusting the pressure between the dosing roller 14 and the coating roller 10 and/or the relative velocity between coating roller 10 and dosing roller 14, the amount of varnish applied by the coating roller 10 onto the film 18 is variably controllable. If only a very small amount of varnish shall be applied onto the film, i.e. a varnish layer of relatively thin strength is to be applied onto the film 18, the dosing roller 14 may rotate in opposite direction as compared to the coating roller 10. This is indicated by the double-arrow 48.
  • layers of varnish can be applied onto the film 18 which are much thicker than possible with prior art machines, e.g. it is possible to apply a varnish layer having a thickness in the range of 120 ⁇ m to 130 ⁇ m with a constant thickness along the width and length of the film 18.
  • a film 18 having release properties and coated with a varnish layer having a thickness in the afore-mentioned range is very suitable for applying varnish onto an object with a high degree of homogeneity of the varnish layer on the object, especially in the area of edges. Cracks are avoided.
EP05005644A 2004-02-23 2005-03-15 Appareil pour appliquer un vernis sur un film Withdrawn EP1618967A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US54673604P 2004-02-23 2004-02-23
PCT/US2004/023683 WO2005084823A1 (fr) 2004-02-23 2004-07-23 Appareil d'application d'un vernis sur un film
PCT/US2005/005522 WO2005081915A2 (fr) 2004-02-23 2005-02-22 Appareil et procede de fabrication d'un film pouvant etre utilise pour appliquer du vernis et de la couleur sur un objet

Publications (1)

Publication Number Publication Date
EP1618967A1 true EP1618967A1 (fr) 2006-01-25

Family

ID=38813060

Family Applications (2)

Application Number Title Priority Date Filing Date
EP04778962A Withdrawn EP1755791A4 (fr) 2004-02-23 2004-07-23 Appareil d'application d'un vernis sur un film
EP05005644A Withdrawn EP1618967A1 (fr) 2004-02-23 2005-03-15 Appareil pour appliquer un vernis sur un film

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP04778962A Withdrawn EP1755791A4 (fr) 2004-02-23 2004-07-23 Appareil d'application d'un vernis sur un film

Country Status (3)

Country Link
EP (2) EP1755791A4 (fr)
CN (1) CN1942253A (fr)
WO (1) WO2005084823A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103072360A (zh) * 2013-01-14 2013-05-01 宋瑞娥 一种在片材上覆膜的工艺
CN103072361A (zh) * 2013-01-14 2013-05-01 宋瑞娥 一种片材覆膜机
CN106622842A (zh) * 2017-02-21 2017-05-10 江苏威司顿印刷科技有限公司 用于预涂感光版生产的感光液涂布装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859110A (en) * 1972-11-06 1975-01-07 Brown & Williamson Tobacco Surface finishes
EP0573676A1 (fr) * 1992-05-19 1993-12-15 General Electric Plastics B.V. Utilisation d'une bande de support ayant des propriétés de décollage pour l'application de laque et de teinture sur un substrat
EP0993876A1 (fr) * 1998-10-13 2000-04-19 Bush Industries, Inc. Procédé d'application d'un décor coloré sur un substrat
EP1053793A1 (fr) * 1999-05-17 2000-11-22 Argotec Lacksysteme GmbH Procédé pour l'application d' une peinture et d'un décor sur un objet et procédé et dispositif pour appliquer une peinture, un décor et un adhésif sur un film
EP1304236A1 (fr) * 2001-10-19 2003-04-23 MZE Engineering GmbH Procédé de production d'une couche de vernis structurée

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE35830T1 (de) * 1983-10-07 1988-08-15 Triatex International Vorrichtung und verfahren zum aufbringen geregelter mengen an flotte auf eine aufnahmefaehige materialbahn.
WO1996006430A1 (fr) * 1994-08-22 1996-02-29 Minnesota Mining And Manufacturing Company Couches magnetisables appliquees par couchage par gravure a vitesse differentielle dans la fabrication de supports d'enregistrement magnetiques
US6068701A (en) * 1998-02-23 2000-05-30 Kohler Coating Machinery Corporation Method and apparatus for producing corrugated cardboard

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3859110A (en) * 1972-11-06 1975-01-07 Brown & Williamson Tobacco Surface finishes
EP0573676A1 (fr) * 1992-05-19 1993-12-15 General Electric Plastics B.V. Utilisation d'une bande de support ayant des propriétés de décollage pour l'application de laque et de teinture sur un substrat
EP0993876A1 (fr) * 1998-10-13 2000-04-19 Bush Industries, Inc. Procédé d'application d'un décor coloré sur un substrat
EP1053793A1 (fr) * 1999-05-17 2000-11-22 Argotec Lacksysteme GmbH Procédé pour l'application d' une peinture et d'un décor sur un objet et procédé et dispositif pour appliquer une peinture, un décor et un adhésif sur un film
EP1304236A1 (fr) * 2001-10-19 2003-04-23 MZE Engineering GmbH Procédé de production d'une couche de vernis structurée

Also Published As

Publication number Publication date
EP1755791A4 (fr) 2009-03-04
WO2005084823A1 (fr) 2005-09-15
CN1942253A (zh) 2007-04-04
EP1755791A1 (fr) 2007-02-28

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