EP1975101A2 - Enroulement d'une bande de feuille transfert - Google Patents

Enroulement d'une bande de feuille transfert Download PDF

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Publication number
EP1975101A2
EP1975101A2 EP08102233A EP08102233A EP1975101A2 EP 1975101 A2 EP1975101 A2 EP 1975101A2 EP 08102233 A EP08102233 A EP 08102233A EP 08102233 A EP08102233 A EP 08102233A EP 1975101 A2 EP1975101 A2 EP 1975101A2
Authority
EP
European Patent Office
Prior art keywords
transfer
film web
transfer film
charging
film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08102233A
Other languages
German (de)
English (en)
Other versions
EP1975101B1 (fr
EP1975101A3 (fr
Inventor
Alexander Weber
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen AG
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=39583849&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1975101(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Priority to PL08102233T priority Critical patent/PL1975101T3/pl
Publication of EP1975101A2 publication Critical patent/EP1975101A2/fr
Publication of EP1975101A3 publication Critical patent/EP1975101A3/fr
Application granted granted Critical
Publication of EP1975101B1 publication Critical patent/EP1975101B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/28—Wound package of webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F16/00—Transfer printing apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2219/00—Printing presses using a heated printing foil
    • B41P2219/20—Arrangements for moving, supporting or positioning the printing foil
    • B41P2219/23—Winding up the printing foil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/513—Modifying electric properties
    • B65H2301/5132—Bringing electrostatic charge

Definitions

  • the present invention relates to a method and apparatus for receiving a spent transfer ribbon web on a collection roll.
  • various film transfer devices are used, for example for the production of gloss effects. These machines can be divided into hot stamping foil machines and cold foil stamping machines.
  • a transfer layer of a transfer film is transferred under pressure to a printing substrate.
  • This substrate is applied imagewise to receive the transfer layer for it in a previous process step with an adhesive.
  • This application is generally carried out in a conventional printing unit by transferring the adhesive to the printing substrate like a normal printing ink via a printing plate cylinder and a blanket cylinder.
  • the thus treated with adhesive substrate is passed through a transfer unit, which is also generally a conventional printing unit.
  • a transfer cylinder and an impression cylinder form a transfer nip, through which the adhesive material and the transfer film are passed together.
  • a transfer layer is then transferred from the transfer film under pressure to the printing substrate. In this case, the transfer layer adheres to the applied with adhesive areas of the printing substrate.
  • the transfer film web is provided to the transfer station on a film supply reel. From this film supply roll, the film web is unwound, passed together with the substrate through the transfer nip and then the used transfer film, which has no transfer layer at least partially wound on a film collection winding.
  • a corresponding device for film transfer, in particular of cold foil, is in the European patent specification EP 0 578 706 B1 presented.
  • this telescoping of the film collection roll creates a risk, since this telescoped film collection roll could reach into other machine areas; on the other hand, the rotational behavior of the film collection roll is at least adversely affected.
  • the recording process of the film web must be interrupted on the collecting winding to make the telescoping undone. It may even be necessary to replace the entire film collection wrap and prepare a new film collection wrap. Through these steps, the process of film transfer is at least slowed down and a possibly necessary new provision of a film collection reel also leads to an increased consumption of material.
  • the object of the present invention is therefore to provide a method and a device which at least reduces the telescoping of the film web.
  • This object of the invention is achieved by a method for receiving a used transfer film web on a collecting winding according to claim 1, by the Transfer film web is positively or negatively charged substantially over its entire width, that adhere to each other on the collecting winding stacked transfer film web sections electrostatically.
  • the object is achieved by a device for receiving a used transfer film web having at least one dielectric layer on a collecting winding, in which at least one charging device is provided for charging the dielectric layer of the transfer film web in a region of the transfer film web located in front of the collecting winding, which essentially extends extends over the entire width of the transfer film web.
  • the film web adheres to one another on the film collection roll in the radial direction. Tangential or axial movements are thereby conveniently avoided.
  • the transfer film web has a dielectric carrier layer.
  • this may preferably be impermeable to air.
  • a static bonding which is particularly strong according to the invention is achieved by continuous application of the dielectric layer of the transfer film web, ie reaches its carrier layer with electrical charge. As a result, the webs are wound stable over their entire length.
  • the transfer film web comprises at least two partial webs and that, in terms of process, these at least two separate partial webs of the transfer film web are charged.
  • two different transfer foils can advantageously be used, in particular in a cold foil stamping process, in order to transfer a transfer layer to two separate regions of the printing substrate.
  • a charging device is used for charging the transfer film web or a plurality of partial webs, which essentially extends over the entire width of the one transfer film web or of all of the part merchandise webs.
  • This is a particularly simple embodiment and a simple method to simultaneously load all partial webs so that they can be wound on separate collecting wraps or on a common collecting winding.
  • it is also possible to provide different sub-collection windings which are provided on a common shaft.
  • the charging device comprises a charging electrode and a conductive surface as a counter pole and that the transfer film web or multiple partial webs between the charging electrode and the conductive surface passed and charged by a current flow between the charging electrode and the conductive surface.
  • a distance of 0-30 mm, preferably 20 mm, between the conductive surface and the charging electrode is advantageously provided.
  • the conductive surface may alternatively be a sheet, a rod, a cylinder or a pulley.
  • the conductive surface may be rigid.
  • a rotatable deflection roller is used as the conductive surface.
  • the transfer film web wraps around the deflection roller with an angle of wrap of more than 20 °, preferably more than 90 °, in order to achieve a larger contact area between transfer film web and conductive surface, which enables a better charging of the transfer film web.
  • a corona electrode or a rechargeable deflection roller is included by the charging device for charging the transfer film web or the part webs.
  • the distance between the application of the transfer film web to the charge and the collecting roll can be minimized by means of the corona electrode.
  • the largest possible amount of charge remains on the collecting wrap.
  • an inventively rechargeable deflection roller as part of the charging device, a structurally very simple solution can be found.
  • To guide the transfer film web z.
  • a cold foil transfer web are generally present anyway pulleys in the device.
  • One of these deflection rollers or at least one of these deflection rollers to be used as an electrode for charging the transfer film web therefore means a structural simplification, so that no further elements have to be introduced into the device for film transfer.
  • a rechargeable deflection roller for charging the transfer film web is too Note that especially when using a transfer film, the deflection roller comes into contact with the dielectric side of the transfer film web.
  • a transfer film web having a carrier layer is used as the transfer film web , which is suitable to carry a transfer layer, wherein the side facing away from the transfer layer of the carrier layer is charged positively or negatively.
  • the Fig. 1 shows a possible structure of a conventional transfer sheet.
  • the transfer film 1 has a carrier film 2, which generally has dielectric properties.
  • the carrier film 2 carries a transfer layer 3, which is formed from a release layer 4 and a metal layer 5.
  • a layer in the form of an adhesion promoter 6 may also be provided, which mediates a better contact between regions of a printing material applied to the adhesive and the transfer film 1.
  • the metal layer 5 can be formed, in particular, by a lacquer layer to which colored metal particles have been buried.
  • a colored or transparent lacquer layer 4 can be provided as a release layer on the carrier film 2, on which a metallic layer 5 is vapor-deposited. On this metallic layer 5, the bonding agent 6 is then provided. After a film transfer, the lacquer layer 4 on the transferred transfer layer 3 serves as protection.
  • the Fig. 2 shows a transfer unit 100, which may be provided for example in a printing press, not shown. In particular, it may include at least parts of a conventional printing unit.
  • the transfer unit 100 comprises a Folienvorratswicken 101, is provided on the transfer sheet 1 in the form of a film web 102.
  • the film web 102 is guided over deflection rollers 103 through a transfer gap 104. It is passed through this transfer gap 104 together with a sheet 107.
  • the sheet 107 has been applied imagewise with adhesive in a commissioned work, not shown here, which may be a printing unit of a conventional printing press.
  • the transfer layer 3 of the transfer film 1 is then detached from the carrier film 2 of the transfer film 1 in the areas of the sheet 107 which are exposed to adhesive and transferred to the sheet 107 by means of pressure.
  • the pressure required for this purpose is generated by a transfer cylinder 105 which is set against a counter-pressure cylinder 106 and which together form the transfer nip 104.
  • the transfer cylinder 105 may be a blanket cylinder of a conventional printing unit.
  • the used film web 102 is fed further along deflection rollers 103 to a film collection roll 108 along the arrow shown here.
  • the film collecting winding 108 rotates in the direction of the arrow shown here and thus takes up the used film web 102.
  • two charging devices 112, 112 'are shown here which can each be assigned alone or together to the used film web 102. In particular, it may thus be provided that only the charging device 112 or the charging device 112 'are provided.
  • the Fig. 2 expressly is a possible example, which at least illustrates the possible other embodiments with only one charging device 112, 112 '.
  • the film web 102 is guided so that the transfer layer 3 of the transfer film 1 in the transfer nip 104 can be transferred to the sheet 107.
  • the dielectric support film 2 of the transfer film 1 is in this case facing the transfer cylinder 105.
  • the charging devices 112, 112 ' are each assigned to the side of the carrier film 2 of the transfer film 1 which faces away from the transfer layer 3.
  • the charging device 112 comprises a charged deflection roller 109, which is assigned to the rear side of the transfer film 1.
  • the transfer film 1 is guided around the charged deflection roller 109 so that the carrier film 2 comes directly into contact with the charged deflection roller 109 and is charged by it positively or negatively.
  • the type of charge does not matter here. This is in particular a static charge, so that a charge carrier separation in the carrier film 2 is achieved.
  • the transfer film 1, ie the film web 102 is thus charged, so that the side facing away from the transfer layer 3 the carrier film 2 z. B. is positively charged and the transfer layer 3 associated side of the carrier film 2 is negatively charged.
  • the thus-charged film web 102 is wound on the film-collecting winding 108, and adjoining regions of the film web 102 on the film-collecting winding 108 attract in the radial direction.
  • a frictional force is generated, which must be overcome in order to enable telescoping of the film web 102.
  • telescoping of the film web 102 on the film collection roll 108 is avoided by the generation of this radial force.
  • a DC high-voltage generator 110 is also provided here, which charges the deflection roller 109 and is covered by the charging device 112.
  • a further charging device 112 ' is provided here, which comprises a corona electrode 111.
  • This corona electrode 111 is also supplied with direct current by means of a high voltage generator 110 and charges the carrier foil 2 as described above.
  • the Fig. 3 shows a device for receiving a spent transfer film web, as in the case of a used sheet of film 102 shown here, as shown in the Fig. 2 was shown.
  • two separate sub-film webs 203, 204 are passed through a transfer nip 104 and transferred separately to different areas of a sheet 107 a transfer layer 3.
  • These sub-film webs 203, 204 are by means of pulleys 103 of sub-film storage wraps here are not shown, passed through a transfer nip 104 and finally led to the partial film wraps 201, 202 shown here, which are provided on a common shaft 200, which may be in particular a friction shaft.
  • the partial film webs 203, 204 are guided around the charged deflection roller 109 such that their carrier film side 2 comes into contact with the charged deflection roller 109.
  • the charged deflection roller 109 extends transversely to the transport direction of the partial film webs 203, 204, which is illustrated by the arrow shown here, over the entire width of all partial film webs 203, 204. In this way, only one charged deflection roller 109 is necessary to both Transfer film webs 203, 204 to charge and redirect at the same time to finally on the respective sub-film wraps 201, 202 to prevent telescoping of the partial film webs 203, 204.
  • the charged pulley 109 is also charged by means of a DC high voltage generator 110 here.
  • a corona electrode 111 may also be provided.
  • the corona electrode 111 like the charged deflection roller 109, extends over the entire width of the format of all partial film webs 203, 204 and charges the partial film webs 203, 204 over the entire area by means of a charging current.
  • all partial film webs 203, 204 or only a single film web 102 are charged such that radially spaced film web regions located on film reels 108, 201, 202 attract each other such that an axial slippage, ie. H. a telescoping, the individual partial film webs 203, 204 or film web 102 is avoided.
  • the Fig. 4 shows a particularly preferred receiving device for receiving a spent transfer film.
  • this recording device is shown laterally in a transfer unit 100. Same elements as in the Fig. 2 already stated, are here provided with the same reference numerals.
  • the leadership of the film web 102 takes place here, as for Fig. 2 executed, by means of deflection rollers 103.
  • the transfer of the transfer layer 3 from the transfer sheet 1 to a substrate 107 is carried out, as already for Fig. 2 executed.
  • the charging of the used transfer film 1 to avoid the telescoping of the transfer film 1 on a film collection winding 108 takes place here on a deflection roller with a conductive surface 302.
  • the film web 102 is guided around this deflection roller 302 so that the carrier film 2 of the transfer film 1 with the conductive surface the deflection roller 302 comes into contact.
  • a potential between the charging electrode 301 and the conductive surface of the guide roller 302 is constructed.
  • the surface of the deflection roller 302 is at a ground level.
  • the deflection roller 302 itself is charged opposite to the charging electrode 301.
  • the voltage can be varied within a range between 0 and 30 kV. For example, for a very wide film web 102, virtually no charging is needed, i. the voltage can be set to 0V. While for narrow film webs 102 and partial film webs 203, 204, it is preferable to set voltages in a range between 15 kV and 20 kV. In particular, this voltage can also automatically, for. B. depending on an incipient telescoping be regulated.
  • the film web 102 is guided around the deflection roller 302.
  • the film web 102 does not come into contact with the charging electrode 301, but is charged solely by the discharge between the charging electrode 301 and the deflecting roller 302.
  • the film web 102 is passed between the charging electrode 301 and the deflection roller 302.
  • it should preferably not come according to the invention. Therefore, it is also preferable to provide a gap of 20 mm between the surface of the pulley 302 and the discharge tip of the charging electrode 301.
  • the charging of the carrier film 2 of the transfer film 1 is, according to experience, at least supported by the contact with the conductive surface of the deflection roller 302.
  • the film web 102 is guided around the deflection roller 302 at a wrap angle ⁇ .
  • This wrap angle ⁇ is here, as shown, preferably more than 90 °. In this way, the film web 102 is optimally charged and glued on the film collection winding 108 such that a telescoping of the film web 102 can be successfully avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding Of Webs (AREA)
  • Decoration By Transfer Pictures (AREA)
EP08102233A 2007-03-28 2008-03-04 Enroulement d'une bande de feuille transfert Active EP1975101B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08102233T PL1975101T3 (pl) 2007-03-28 2008-03-04 Nawijanie pasma folii transferowej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007015379 2007-03-28
DE102007017799 2007-04-16

Publications (3)

Publication Number Publication Date
EP1975101A2 true EP1975101A2 (fr) 2008-10-01
EP1975101A3 EP1975101A3 (fr) 2009-07-29
EP1975101B1 EP1975101B1 (fr) 2012-05-16

Family

ID=39583849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08102233A Active EP1975101B1 (fr) 2007-03-28 2008-03-04 Enroulement d'une bande de feuille transfert

Country Status (5)

Country Link
US (1) US20080241718A1 (fr)
EP (1) EP1975101B1 (fr)
JP (1) JP2008239347A (fr)
DE (1) DE102008012694A1 (fr)
PL (1) PL1975101T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103029425A (zh) * 2011-10-07 2013-04-10 小森公司 薄膜转印装置
EP3222421B1 (fr) * 2016-03-23 2021-12-15 Christa Dettke Enrouleur avec stockage d'une charge électrique d'un matériau en bande

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5915577B2 (ja) * 2012-04-18 2016-05-11 コニカミノルタ株式会社 箔転写装置および画像形成システム
JP5915578B2 (ja) * 2012-05-17 2016-05-11 コニカミノルタ株式会社 画像形成システム

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0578706B1 (fr) 1991-04-04 1994-11-02 LAPPE, Kurt Procede et machine d'impression par decalquage
EP0718099A2 (fr) 1994-12-24 1996-06-26 Armin Steuer Machine rotative pour gaufrer
DE19842585A1 (de) 1998-09-17 2000-03-23 Armin Steuer Speichereinrichtung und ihre Verwendung
DE10116973A1 (de) 2001-04-05 2002-10-17 Reifenhaeuser Masch Wickeleinrichtung sowie Verfahren zur Durchführung eines Wickelwellenwechsels in einer Wickeleinrichtung

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0578706B1 (fr) 1991-04-04 1994-11-02 LAPPE, Kurt Procede et machine d'impression par decalquage
EP0718099A2 (fr) 1994-12-24 1996-06-26 Armin Steuer Machine rotative pour gaufrer
DE19842585A1 (de) 1998-09-17 2000-03-23 Armin Steuer Speichereinrichtung und ihre Verwendung
DE10116973A1 (de) 2001-04-05 2002-10-17 Reifenhaeuser Masch Wickeleinrichtung sowie Verfahren zur Durchführung eines Wickelwellenwechsels in einer Wickeleinrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103029425A (zh) * 2011-10-07 2013-04-10 小森公司 薄膜转印装置
CN103029425B (zh) * 2011-10-07 2015-07-29 小森公司 薄膜转印装置
US9278508B2 (en) 2011-10-07 2016-03-08 Komori Corporation Film transfer apparatus
EP3222421B1 (fr) * 2016-03-23 2021-12-15 Christa Dettke Enrouleur avec stockage d'une charge électrique d'un matériau en bande

Also Published As

Publication number Publication date
DE102008012694A1 (de) 2008-10-02
EP1975101B1 (fr) 2012-05-16
JP2008239347A (ja) 2008-10-09
EP1975101A3 (fr) 2009-07-29
US20080241718A1 (en) 2008-10-02
PL1975101T3 (pl) 2012-10-31

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