EP3090874A1 - Procédé de pliage de supports d'impression vernis en forme de bande ou de feuille - Google Patents

Procédé de pliage de supports d'impression vernis en forme de bande ou de feuille Download PDF

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Publication number
EP3090874A1
EP3090874A1 EP16167286.0A EP16167286A EP3090874A1 EP 3090874 A1 EP3090874 A1 EP 3090874A1 EP 16167286 A EP16167286 A EP 16167286A EP 3090874 A1 EP3090874 A1 EP 3090874A1
Authority
EP
European Patent Office
Prior art keywords
area
paint
partially
lacquer
printing
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Withdrawn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
EP16167286.0A
Other languages
German (de)
English (en)
Inventor
Thomas Eisensteger
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.)
Manroland Web Systems GmbH
Original Assignee
Manroland Web Systems 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
Application filed by Manroland Web Systems GmbH filed Critical Manroland Web Systems GmbH
Publication of EP3090874A1 publication Critical patent/EP3090874A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
    • B41F23/08—Print finishing devices, e.g. for glossing prints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/56—Folding or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/02—Dusting, e.g. with an anti-offset powder for obtaining raised printing such as by thermogravure ; Varnishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • B65H45/221—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement incorporating folding triangles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/12—Surface aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/12—Surface aspects
    • B65H2701/125—Particular treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/132—Side portions
    • B65H2701/1321—Side portions of folded article or web
    • B65H2701/13212—Fold, spine portion of folded article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/24—Post -processing devices
    • B65H2801/31—Devices located downstream of industrial printers

Definitions

  • the invention relates to a method for improving the hemmability of a substrate to be folded by reducing the mechanical resistance in at least one rebate area lying within a paint area. Furthermore, the invention relates to a device for carrying out this method.
  • printed products produced by the sheet-fed printing process or in the web-fed printing process it is customary, depending on the application or the degree of finishing of the printed product, to paint the printed or also the unprinted web or sheet at least on one side and at least partially.
  • This can be, for example, envelopes for magazines or magazines, pages of high-quality printed products to increase the gloss or even printed products for packaging printing.
  • paints which can be applied to the printed product.
  • oil-based paints that are applied, for example, with conventional offset printing units
  • dispersion paints which can be applied, for example, by gravure printing or flexographic printing
  • radiation-curing paints such as UV printing inks
  • the application of a paint can be done both with conventional non-printing variable printing units or printing plates such as offset, gravure or flexographic printing forms, but it is also known from the prior art, such coatings with printing form variable printing method such as the inkjet printing method on the web or sheet-shaped substrate to apply.
  • the achievable printing substrate thicknesses are dependent on the process, the type of paint, etc. usually in the range of a few microns to a few tenths of a millimeter.
  • the invention is therefore based on the object to provide a solution which makes it possible, even with at least one side at least partially painted webs or sheets, in which at least one fold area within at least one lacquer area and thus forms the folded area with the at least one lacquer area a cutting area to allow a good formation of the fold and a high folding accuracy.
  • the object is achieved in that at least one cutting area is at least partially executed with a different nature with respect to the respective paint area in which the respective cutting area extends.
  • This method has the advantage that the nature of the relevant cutting areas within the relevant paint areas can be carried out by the device applying the paint and thus that additional equipment downstream of the paint application and optionally for its drying or curing is no longer absolutely necessary.
  • the coating application takes place by means of a non-printing-form-variable printing process such as, for example, the offset process, the gravure printing process or the flexographic printing process or by means of a printing-form-variable printing process such as, for example, the inkjet printing process.
  • a non-printing-form-variable printing process such as, for example, the offset process, the gravure printing process or the flexographic printing process or by means of a printing-form-variable printing process such as, for example, the inkjet printing process.
  • the lacquer layer is applied at least partially with a reduced thickness in the at least one cutting area.
  • the position of the fold can be exactly predicted; on the other hand, the at least partially reduced thickness of the lacquer layer and the thus reduced flexural rigidity of the lacquer layer can also form a clean fold without so-called keyholes. In this case, it is furthermore irrelevant whether the cutting region is arranged in or transverse to the printing direction or in or transverse to the direction of movement during the folding process.
  • At least partially no lacquer layer is applied in the at least one cutting area.
  • the principle is thus identical to the above-mentioned example of an at least partially reduced lacquer layer thickness, wherein here in the relevant areas due to the lack of a lacquer layer, the formation of a fold must be made only against the resistance of the printing material.
  • the method according to the invention is based on the fact that the lacquer layer has a reduced (bending) strength in the folded area or in a cut area in comparison to the lacquer area adjoining the at least one cut area, according to a further advantageous embodiment of the invention it can at least in the at least one cut area partially have a different drying or curing, since the high strength of the paint layer only by drying or curing and the associated usually crosslinking of the paint is generated.
  • This solution can be realized, for example, when so-called LED radiation devices are used in radiation-drying lacquers such as UV or IR lacquers in the form in which the at least one diode, which is arranged in the orientation of a fold region, is switched off completely or clocked.
  • the paint layer thickness can be at least partially, for example by means of a mechanical device such as a perforation, which dips at least partially into the paint layer before drying or curing, are reduced.
  • a mechanical device such as a perforation
  • Fig. 1 shows an example of a section of a printing press from the prior art.
  • the substrate 1 which is usually to be printed on and to be folded is made available via a device (not shown), such as, for example, a roll changer or dispenser, and fed to at least one printing device 10.
  • This at least one printing device 10 may be according to the prior art, either a non-printing variable printing device 10 such as an offset, gravure or flexographic printing unit or the printing device is a tikformvariable printing device 10.
  • the substrate 3 by means of at least one painting device 11 at least on one side either over the entire surface or as in Fig. 1 shown partially painted with at least one paint area 4.
  • the at least one painting device 11 is a non-printing device-variable painting device which operates, for example, by the offset, gravure or flexographic printing method or if the at least one painting device is a printing plate-variable painting device 11, such as, for example, an inkjet coating device.
  • a drying or hardening device which is usually required at least for the lacquer layer 5, such as, for example, a hot-air dryer or a radiation device, is not shown, since this is not essential with respect to the present invention and is known from the prior art.
  • the formation of the fold can take place along and / or transversely to the printing direction 8, and it is also irrelevant whether the folding operation takes place before the web 2 is separated into sheets or folded products 1.
  • the substrate 3 consists of paint areas 4, in which a paint layer 5 is applied in a constant or variable thickness.
  • the areas in which a fold is formed are referred to as folding areas 6, these can be carried out either exclusively in one direction or in several directions to the printing direction 8.
  • Fig. 1 By way of example, a variant is shown in which, after the formation of a so-called longitudinal fold, the web 2 is divided into folded products 1 and subsequently also crossfolded. Not in Fig. 1 shown, but known from the prior art, it is also possible to first isolate the web 2 in sheets in order then then to fold them.
  • the invention is also applicable if instead of a web 2 already a single sheet 2 is painted.
  • the lacquer area 4 at least partially covers a fold area 6.
  • This corresponding cutout from the web 2 with the fold areas 6 and the lacquer areas 4 is in Fig. 2 again shown in detail.
  • a fold region 6 extends partially in at least one lacquer area 4.
  • This region of the fold region 6 extending in the paint area 4 is referred to as the cut area 7, since this represents the intersection of the paint area 4 and the fold area 6.
  • a lacquer area 4 is an area with substantially the same properties of the lacquer layer 5, so that according to this definition in the FIGS. 1 and 2 It can be assumed that the illustrated lacquer areas 4 have essentially constant properties in each case, such as nature and, in particular, the thickness of the lacquer layer 5.
  • Fig. 3 shows a further example of at least one side and at least partially painted sheet 2. This has two fold areas 6-1 and 6-2, further, this has a plurality of lacquer areas 4, which are crossed by the fold areas, the overlapping areas between the folding areas. 6 and the paint areas 4 represent the respective cutting areas 7.
  • the lacquered area 4-3 has a changing property of the lacquer layer 5, which is realized, for example, by a changing lacquer layer thickness 5, for example by different gloss effects of the lacquer layer to achieve varnished area 4-3.
  • the property of the lacquer layer 5 is illustrated by a different intensity of the hatching in the lacquered areas 4-1, 4-2 and 4-3 in FIG Fig. 3 In which a narrower hatching is intended, by way of example, to represent a greater lacquer layer thickness and a further hatch, a lower lacquer layer thickness.
  • the lacquer area 4-1 has a constant and relatively large lacquer layer thickness
  • the lacquer area 4-2 has a constant but lower lacquer layer thickness.
  • the painted area 4-3 thus has a non-constant lacquer layer thickness, which decreases from the left edge to the right edge.
  • a variable lacquer layer thickness is shown, wherein the property of the lacquer layer 5 extends transversely to the direction of the fold regions 6-1 and 6-2.
  • the property of a lacquer layer 5 changes in the direction of a fold region or in any desired orientation for this purpose.
  • At least one cutting region 7 is at least partially executed with a deviating texture with respect to the relevant lacquer region 4, in which the respective cutting region 7 extends, in order to improve the foldability, it is thus necessary for lacquered regions with a variable property of the lacquer layer to produce this variably lacquered region divided into individual paint areas 4, wherein the paint areas 4 extend over areas having substantially the same properties as, for example, located in a tolerance band mean layer thickness of the paint layer 5.
  • the lacquered area 4-3 is subdivided into any number of lacquer areas which essentially have the same lacquer layer thickness.
  • the paint areas 4 around the intersection areas 7-3a and 7-3b are to be considered according to the invention, only the areas 4-3a and 4-3b are taken into account around the intersection areas 7-3a and 7-3b.
  • lacquer areas 4-3a and 4-3b thus have substantially the same property of the lacquer layer, which is therefore used as the basis for the design of the lacquer layer 5 in the area of the respective relevant sectional areas 7-3a and 7-3b.
  • the procedure of the division of the lacquer areas 4 is basically identical, but in this case several lacquer areas in the extension of the folding areas 6-1 and 6-2 would line up, so that, for example, in the overlapping region of the folding area 6-1 with the lacquered Range 4-3 would thus result in several consecutive cutting areas 7-3x, in order to be able to determine a defined configuration of the texture in the respective one of the sectional areas 7-3x in comparison to the respective paint area 4-3x.
  • Fig. 4 shows an example of a full-surface coated sheet 2, as it comes, for example, as an envelope of magazines or magazines used, which is why this example, only a single folding area 6 has. Due to the full-surface, painted with substantially the same properties paint area corresponds in this case, the entire seaming area 6 the cutting area. 7
  • Fig. 5 is the section AA through the arc 2 off Fig. 4 shown.
  • This section of the inventive design of the cutting area can be taken, namely that in at least one section 7 at least partially with a different nature with respect to the relevant paint area 4, in which the respective cutting area extends is performed.
  • Fig. 5 can be seen, at least partially the lacquer layer thickness in the intersection region 7 reduced in the cutting area d compared to the paint layer thickness in the paint area D.
  • This lacquer layer thickness d which is reduced in the section region 7, usually has a width of approximately 0.1 to approximately 2 mm, the width of this recess being rather of minor importance due to the notch effect and the thus defined desired folding point achievable radius or the width of the fold depends, which is among other things influenced by the properties of the printing material.
  • Fig. 6 a particular embodiment of the invention is shown in which at least partially no lacquer layer 5 is applied in the relevant section region 7. With regard to the width of the unpainted track, the same applies as under Fig. 5 executed.
  • the condition of the lacquer layer is carried out either constantly or changed over the entire extent of the respective relevant cutting regions 7.
  • the reduced lacquer layer thickness d can be uniformly reduced over the entire relevant cutting region 7, but the reduction or elimination of the lacquer coating can also take place only partially or in sections, for example comparable to a perforation. Due to the at least partially changed properties of the lacquer layer 5, however, the foldability along the cutting regions 7 is correspondingly increased.
  • the folding area 6 and thus also the cutting area 7 due to the lack of paint layer 5 in this area additionally be rehydrated, thus further increasing the folding of the printing substrate 3 by reducing the mechanical resistance, what especially with high paper weights or high-volume papers is advantageous.
  • a corresponding rewet agent can either be applied via an additional, not shown, rewet device or, for example, directly via inkjet heads, since the inkjet ink often consists of a high proportion of water.
  • FIGS. 1 to 6 represent special embodiments in which the deviating nature of the lacquer layer 5 is realized in a cutting region 7 in the form of a lower lacquer layer thickness.
  • the paint layer thickness can be at least partially, for example by means of a mechanical device such as a perforation, which dips at least partially into the paint layer before drying or curing, are reduced.
  • a laser beam which can basically be done before or after the drying or hardening of the lacquer layer.
  • the property of the paint layer at least partially characterized in that the paint layer partially less or not dried or hardened can be changed relatively easily, for example, if a plurality of LEDs are arranged next to one another in the case of radiation drying over the drying width, so that at least one LED in the track, in which a relevant cutting region 7 extends, at least not consistently dried uniformly or hardened. Due to the resulting different nature and hardness of the lacquer layer and a desired folding point can be formed.
  • the paint layer thickness can be at least partially, for example by means of a mechanical device such as a perforation, which dips at least partially into the paint layer before drying or curing, are reduced.
  • a laser beam which can basically be done before or after the drying or hardening of the lacquer layer.
  • the at least one cutting region 7 has an orientation which is carried out in the printing direction 8 or in the transport direction during the processing or folding operation and / or transversely thereto.
  • two or more fold regions 6 with an arbitrary orientation lie in a lacquered region 4, since in particular with the application of a different lacquer layer thickness there is a considerable or arbitrary flexibility in the configuration of the lacquer layer 5.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Printing Methods (AREA)
EP16167286.0A 2015-05-07 2016-04-27 Procédé de pliage de supports d'impression vernis en forme de bande ou de feuille Withdrawn EP3090874A1 (fr)

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Application Number Priority Date Filing Date Title
DE102015107168.1A DE102015107168A1 (de) 2015-05-07 2015-05-07 Soll-Falzstelle

Publications (1)

Publication Number Publication Date
EP3090874A1 true EP3090874A1 (fr) 2016-11-09

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EP16167286.0A Withdrawn EP3090874A1 (fr) 2015-05-07 2016-04-27 Procédé de pliage de supports d'impression vernis en forme de bande ou de feuille

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DE (1) DE102015107168A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016204547A1 (de) 2016-03-18 2017-09-21 Koenig & Bauer Ag Verfahren zur Konfigurierung einer Trocknereinrichtung in einer Druckmaschine und eine Druckmaschine

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2157410A (en) * 1937-04-05 1939-05-09 Marshall & Ilsley Bank Wrapper and system of producing same
GB565495A (en) * 1943-02-11 1944-11-14 Lyons & Co Ltd J Improvements relating to apparatus for applying wax and like materials to cardboard,paper and the like
DE3527404C1 (de) * 1985-07-31 1987-01-02 Kurz Leonhard Fa Verfahren zur Herstellung einer eine texturierte Lackschicht aufweisenden Folie
EP0343794A2 (fr) * 1988-05-26 1989-11-29 Sakata Inkusu Kabushiki Kaisha Procédé de fabrication d'imprimés glacés.
DE102004058170A1 (de) * 2004-12-02 2006-06-08 Man Roland Druckmaschinen Ag Druckmaschine und Verfahren zum Falzen eines Bedruckstoffs
EP1690602A1 (fr) * 2005-02-09 2006-08-16 Fritz Egger GmbH & Co. Procédé et appareil pour réaliser un revêtement à surface structurée et object ayant un tel revêtement structuré
DE102006004044A1 (de) * 2006-01-28 2007-08-02 Man Roland Druckmaschinen Ag Verfahren und Druckmaschine zum Bedrucken eines Bedruckstoffes
DE102009007778A1 (de) * 2009-02-04 2010-08-05 Bundesdruckerei Gmbh Kunststoffbasierendes Wert- oder Sicherheitsdokument
DE102009002228A1 (de) * 2009-04-06 2010-10-14 Koenig & Bauer Aktiengesellschaft Lackierwerk einer Rollen-Rotations-Offsetdruckmaschine
WO2015009519A1 (fr) * 2013-07-15 2015-01-22 Eastman Kodak Company Système de suivi de supports utilisant l'affaiblissement thermique de la fluorescence

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740046A1 (de) * 1987-10-23 1989-05-03 Kotterer Grafotec Verfahren und vorrichtung zum falzen einer papierbahn

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2157410A (en) * 1937-04-05 1939-05-09 Marshall & Ilsley Bank Wrapper and system of producing same
GB565495A (en) * 1943-02-11 1944-11-14 Lyons & Co Ltd J Improvements relating to apparatus for applying wax and like materials to cardboard,paper and the like
DE3527404C1 (de) * 1985-07-31 1987-01-02 Kurz Leonhard Fa Verfahren zur Herstellung einer eine texturierte Lackschicht aufweisenden Folie
EP0343794A2 (fr) * 1988-05-26 1989-11-29 Sakata Inkusu Kabushiki Kaisha Procédé de fabrication d'imprimés glacés.
DE102004058170A1 (de) * 2004-12-02 2006-06-08 Man Roland Druckmaschinen Ag Druckmaschine und Verfahren zum Falzen eines Bedruckstoffs
EP1690602A1 (fr) * 2005-02-09 2006-08-16 Fritz Egger GmbH & Co. Procédé et appareil pour réaliser un revêtement à surface structurée et object ayant un tel revêtement structuré
DE102006004044A1 (de) * 2006-01-28 2007-08-02 Man Roland Druckmaschinen Ag Verfahren und Druckmaschine zum Bedrucken eines Bedruckstoffes
DE102009007778A1 (de) * 2009-02-04 2010-08-05 Bundesdruckerei Gmbh Kunststoffbasierendes Wert- oder Sicherheitsdokument
DE102009002228A1 (de) * 2009-04-06 2010-10-14 Koenig & Bauer Aktiengesellschaft Lackierwerk einer Rollen-Rotations-Offsetdruckmaschine
WO2015009519A1 (fr) * 2013-07-15 2015-01-22 Eastman Kodak Company Système de suivi de supports utilisant l'affaiblissement thermique de la fluorescence

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