EP2711191B1 - Procédé d'impression de feuilles - Google Patents

Procédé d'impression de feuilles Download PDF

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Publication number
EP2711191B1
EP2711191B1 EP12185442.6A EP12185442A EP2711191B1 EP 2711191 B1 EP2711191 B1 EP 2711191B1 EP 12185442 A EP12185442 A EP 12185442A EP 2711191 B1 EP2711191 B1 EP 2711191B1
Authority
EP
European Patent Office
Prior art keywords
film
primer
printing
corona
composite
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.)
Active
Application number
EP12185442.6A
Other languages
German (de)
English (en)
Other versions
EP2711191A1 (fr
Inventor
Othmar Wohlhauser
Oliver Fankhauser
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.)
Wipf AG
Original Assignee
Wipf 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=47002658&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2711191(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wipf AG filed Critical Wipf AG
Priority to EP12185442.6A priority Critical patent/EP2711191B1/fr
Priority to CA2885243A priority patent/CA2885243C/fr
Priority to PCT/EP2013/069617 priority patent/WO2014044817A1/fr
Priority to JP2015532431A priority patent/JP2016500031A/ja
Publication of EP2711191A1 publication Critical patent/EP2711191A1/fr
Application granted granted Critical
Publication of EP2711191B1 publication Critical patent/EP2711191B1/fr
Priority to US14/664,406 priority patent/US9610607B2/en
Active 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
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/002—Pretreatement
    • 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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
    • B05D3/065—After-treatment
    • B05D3/067—Curing or cross-linking the coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0011—Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0041—Digital printing on surfaces other than ordinary paper
    • B41M5/0064—Digital printing on surfaces other than ordinary paper on plastics, horn, rubber, or other organic polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • 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
    • B41M7/0045—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or film forming compositions cured by mechanical wave energy, e.g. ultrasonics, cured by electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams, or cured by magnetic or electric fields, e.g. electric discharge, plasma
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
    • B41M2205/38—Intermediate layers; Layers between substrate and imaging layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
    • B41M5/52—Macromolecular coatings
    • B41M5/5263—Macromolecular coatings characterised by the use of polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • B41M5/5281—Polyurethanes or polyureas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24851—Intermediate layer is discontinuous or differential

Definitions

  • the present invention relates to a process for printing on films and a film composite produced thereby.
  • Films are used in the packaging industry, with both monofilms and composite films being used here.
  • the films used are printed to give the consumer information about the product, the manufacturer or the brand and to create an aesthetic appearance.
  • In addition to the previously common printing processes such as gravure digital printing is becoming increasingly important and is already used for example in labels, paper applications or so-called shrink sleeves.
  • a use of the digital printing method is so far only possible if the composite printing on the inside of the print carrier takes place. However, this then requires further production operations such as lamination, curing, etc.
  • a method for the production of printed packaging made of laminated film material and a printed laminated film material is proposed.
  • a transparent print carrier film is provided with a first primer layer and the primer layer is digitally printed.
  • the color layer given thereby is covered with a further primer layer, before a covering film is applied by means of a 2K PU adhesive which is elastomeric after curing.
  • Digital printing for the printing of foils is basically already known.
  • Hewlett Packard offers a digital printing machine called Indigo, which is basically also suitable for printing on film.
  • Indigo a digital printing machine
  • the print side is first corona-pretreated, then applied to an aqueous solution based primer and finally the printing of the film is done in digital printing.
  • the films so printed do not have the required thermal and mechanical resistance expected from sealable films.
  • the corona pre-treatment before priming and before printing leads to a particularly high mechanical and thermal stability of the printed film.
  • primer is an organic solvent-based primer.
  • the primer is a two-component primer.
  • the primer may also be a 1-component primer based on polyurethane or polyvinyl butyral (PVB).
  • the resist is an organic solvent-based resist.
  • the resist is a two-component resist.
  • the primer is applied at a thickness of 0.1 to 1 g / m 2.
  • the resist is applied at a thickness of 0.3 to 2 g / m 2.
  • a radiation-curing protective lacquer is used as a protective lacquer, wherein the protective coating is cured by means of electrobeam curing, or the protective coating is cured by means of UV curing.
  • the invention comprises a film composite or film produced by a method according to an embodiment of the invention.
  • Fig. 1 schematically illustrates a method according to an embodiment of the invention.
  • the embodiments allow the printing of web-like composites (multilayer laminates) or films for flexible packaging of food, non-food, pet food, pharmaceutical or medical applications.
  • These composites generally consist of at least 2 different films containing plastic films, and / or metal foils, and / or paper foils. According to one embodiment, it may also be monofilm.
  • the pressure side of this composite (multilayer laminate) or the film is first processed to achieve a better primer adhesion on the pressure side with a corona pretreatment, which takes place according to an embodiment inline.
  • a corona pretreatment the surface to be treated is exposed to an electric corona discharge for a short time.
  • a commercially available device for corona treatment can be used.
  • This pre-treatment serves to clean the surface of the print substrate of materials which have been deposited by set-off from the seal side or migration to the surface.
  • polar molecules are formed on the surface, to which the primer can then better bind.
  • a primer or adhesion promoter is first applied to the printing side of this composite (multilayer laminate) or the film to achieve a better ink adhesion on the printing side according to an embodiment.
  • the order takes place according to an embodiment of 0.1 to 1 g / m2 dry.
  • a solvent-containing primer is used, or a primer based on an organic solvent.
  • primers based on an organic solvent an increased mechanical and thermal stability of the printed end product is achieved compared to the primers used in conventional digital printing, which are based on aqueous solution.
  • the primer based on an organic solvent is a two-component primer.
  • the two components can be, for example, a two-component primer based on polyurethane and isocyanate according to one embodiment. This can then achieve a good mechanical and thermal stability.
  • the order of the solvent-based primer is carried out according to an embodiment on a separate system and not on the digital printing system. This allows the use of a solvent-based primer, which is not possible due to the lack of explosion protection in conventional digital printing systems.
  • the roller primed in a separate unit may then be of different lengths until printing takes place. Due to the different long lying time of this primed role, which varies from one day to several months, exceptionally up to max. 2 years, the gossip (set off) or the migration varies in size. This can then lead to only a slight stability of the print image being achieved in the case of the direct application of ink to the primer, as provided in conventional printing processes.
  • the digital printing then takes place on the pre-primed composite (multilayer laminate) or the film, but - preferably inline - before printing the primed side of the composite (multilayer laminate) or the film is processed via a corona pretreatment.
  • This pre-treatment serves to clean the surface of the (thin) primer layer (005) of materials which have been deposited by imprinting or migration on the surface.
  • the corona pretreatment takes place in accordance with its corona strength owing to the comparatively thin primer layer, which has a thickness of preferably 0.1 to 1 g / m.sup.2.
  • the corona strength is according to one embodiment in a range of 3 to 20 W min / m2.
  • the digital printing then takes place on this corona-pretreated side (006) of the primer.
  • a protective coating against physical, thermal or chemical influences is then applied for the actual application of the composite (multilayer laminate) or the film.
  • a protective coating is applied to the digitally printed composite (multilayer laminate) or the film.
  • the application rate of this protective coating is according to one embodiment 0.3 to 2 g / m 2 dry.
  • the amount applied to the protective varnish may vary depending on the application of the film / composite and the amount of ink application. Preferably, a larger amount of protective lacquer is applied at a higher paint application.
  • the digital-printed side of the composite (multilayer laminate) or film is processed in accordance with an embodiment to achieve a better resist adhesion on the digital-printed side - preferably inline - before the protective coating application with a corona pretreatment.
  • This pretreatment is to clean the surface of the digital-printed side of the composite (multilayer laminate) or film which has been deposited by set-off or migration to surface.
  • an organic solvent-based resist is used.
  • the order of the solvent-based protective coating (009) can be made on a separate system or inline on the digital printing system.
  • a radiation-curing protective lacquer may be used. This can according to one embodiment by means of a Elektrobeamers be cured. According to another embodiment by means of UV curing.
  • an HP Indigo type printing machine is used for digital printing. Since this is not explosion-proof and thus not suitable for use of a primer based on an organic solvent, priming is preferably carried out on a separate unit.
  • the printing of a film composite in the external printing is done with digital printing, so that the further steps such as laminating omitted, which are necessary for internal pressure.
  • an organic solvent-based primer which improves the stability of the pressure.
  • a corona pre-treatment is carried out both before the priming and before the printing and before the application of the protective lacquer.
  • a corona pretreatment of the primed layer prior to printing with digital printing preferably also a corona pretreatment of the digitally printed surface prior to the application of resist, increases the stability of the print image and in particular one sufficient mechanical, thermal and chemical stability is achieved for sealable films. It is therefore particularly advantageous if a corona pretreatment takes place both before the priming and before the digital printing and also before the application of protective lacquer.
  • the primer is an organic solvent-based primer, preferably a two-component primer.
  • printing is also done with an HP Indigo type machine.
  • FIG. 1 schematically illustrates the process according to a preferred embodiment.
  • the multi-layer composite (001) has a pressure side (003) and a sealing side (002).
  • Such a printing process can be used to produce a printed composite which meets the particular chemical, thermal and mechanical stability requirements for sealable composites.
  • the invention comprises a film produced by a process according to the invention or a film composite which has been corona-treated prior to the priming, before the digital printing and before the application of the protective lacquer.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Claims (11)

  1. Procédé pour l'impression numérique d'un film composite ou un film, présentant les étapes suivantes consistant à :
    effectuer un prétraitement corona du film composite ou du film ;
    appliquer un primaire sur le film ;
    effectuer un prétraitement corona du film composite ou du film revêtu d'un primaire ;
    imprimer le film composite ou le film ayant été soumis à un prétraitement corona et revêtu d'un primaire lors du procédé d'impression numérique ;
    appliquer un vernis de protection sur le film composite ou sur le film imprimé, ayant été soumis à un prétraitement corona, revêtu d'un primaire.
  2. Procédé selon la revendication 1, présentant en outre une étape consistant à :
    effectuer un prétraitement corona du film composite ou du film imprimé, ayant été soumis à un prétraitement corona, revêtu d'un primaire avant l'application du vernis de protection.
  3. Procédé selon la revendication 1 ou 2, dans lequel
    le primaire est un primaire à base d'un solvant organique.
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel
    le primaire est un primaire à deux composants.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel
    le vernis de protection est un vernis de protection à base d'un solvant organique.
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel
    le vernis de protection est un vernis de protection à deux composants.
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel
    le primaire est appliqué avec une épaisseur allant de 0,1 à 1 g/m2.
  8. Procédé selon l'une quelconque des revendications précédentes, dans lequel
    le vernis de protection est appliqué avec une épaisseur allant de 0,3 à 2 g/m2.
  9. Procédé selon l'une quelconque des revendications précédentes, dans lequel
    un vernis de protection durcissant sous l'action de rayons est utilisé en tant que vernis de protection.
  10. Procédé selon la revendication 9, dans lequel le vernis de protection est durci au moyen d'un procédé de durcissement par faisceau d'électrons, ou
    le vernis de protection est durci au moyen d'un procédé de durcissement sous l'action d'UV.
  11. Film composite ou film, fabriqué par un procédé selon l'une quelconque des revendications 1 à 10.
EP12185442.6A 2012-09-21 2012-09-21 Procédé d'impression de feuilles Active EP2711191B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP12185442.6A EP2711191B1 (fr) 2012-09-21 2012-09-21 Procédé d'impression de feuilles
CA2885243A CA2885243C (fr) 2012-09-21 2013-09-20 Procede et dispositif pour l'impression de feuilles
PCT/EP2013/069617 WO2014044817A1 (fr) 2012-09-21 2013-09-20 Procédé et dispositif pour l'impression de feuilles
JP2015532431A JP2016500031A (ja) 2012-09-21 2013-09-20 フィルムの印刷方法及び装置
US14/664,406 US9610607B2 (en) 2012-09-21 2015-03-20 Method and device for printing films

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12185442.6A EP2711191B1 (fr) 2012-09-21 2012-09-21 Procédé d'impression de feuilles

Publications (2)

Publication Number Publication Date
EP2711191A1 EP2711191A1 (fr) 2014-03-26
EP2711191B1 true EP2711191B1 (fr) 2014-11-12

Family

ID=47002658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12185442.6A Active EP2711191B1 (fr) 2012-09-21 2012-09-21 Procédé d'impression de feuilles

Country Status (5)

Country Link
US (1) US9610607B2 (fr)
EP (1) EP2711191B1 (fr)
JP (1) JP2016500031A (fr)
CA (1) CA2885243C (fr)
WO (1) WO2014044817A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104191854B (zh) * 2014-09-02 2017-02-15 苏州斯迪克新材料科技股份有限公司 一种解决铝箔凹版印刷打皱的工艺

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DE2460881A1 (de) * 1974-12-21 1976-06-24 Wipf Ag Thermisch verformbare, transparente verbundfolie und verfahren zur herstellung derselben
JP3785882B2 (ja) * 1999-11-24 2006-06-14 王子製紙株式会社 高透明易接着性フィルム
AU753906B2 (en) * 1999-11-24 2002-10-31 Oji Paper Co. Ltd. Film laminates for printing
EP1698480B1 (fr) * 2000-06-06 2008-08-13 Cryovac, Inc. Produit alimentaire emballé
EP1306208A1 (fr) * 2000-07-10 2003-05-02 Idemitsu Technofine Co. Ltd Stratifie en resine, feuille rappelant le cuir, materiau d'interieur automobile, et procede de fabrication de stratifie en resine
DE10041934A1 (de) 2000-08-25 2002-03-07 Roland Man Druckmasch Verfahren und Vorrichtung zum Beschichten von Druckprodukten
US7608312B1 (en) * 2000-09-08 2009-10-27 Cryovac, Inc. Printed antifog film
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Also Published As

Publication number Publication date
EP2711191A1 (fr) 2014-03-26
CA2885243C (fr) 2016-04-12
US20150190842A1 (en) 2015-07-09
US9610607B2 (en) 2017-04-04
CA2885243A1 (fr) 2014-03-27
WO2014044817A1 (fr) 2014-03-27
JP2016500031A (ja) 2016-01-07

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