[go: up one dir, main page]

WO2010026037A1 - Procédé non destructif permettant de vérifier le degré de durcissement ou le degré de séchage de peintures et de laques - Google Patents

Procédé non destructif permettant de vérifier le degré de durcissement ou le degré de séchage de peintures et de laques Download PDF

Info

Publication number
WO2010026037A1
WO2010026037A1 PCT/EP2009/060617 EP2009060617W WO2010026037A1 WO 2010026037 A1 WO2010026037 A1 WO 2010026037A1 EP 2009060617 W EP2009060617 W EP 2009060617W WO 2010026037 A1 WO2010026037 A1 WO 2010026037A1
Authority
WO
WIPO (PCT)
Prior art keywords
printing
curing
drying
degree
spr
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.)
Ceased
Application number
PCT/EP2009/060617
Other languages
German (de)
English (en)
Inventor
Magdalena-Elena De Ambroggi
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 AG
Original Assignee
Manroland 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
Application filed by Manroland AG filed Critical Manroland AG
Priority to EP09781906A priority Critical patent/EP2331332A1/fr
Publication of WO2010026037A1 publication Critical patent/WO2010026037A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55—Specular reflectivity
    • G01N21/552—Attenuated total reflection
    • G01N21/553—Attenuated total reflection and using surface plasmons
    • 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
    • B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
    • B41F23/0403—Drying webs
    • B41F23/0406—Drying webs by radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control

Definitions

  • the invention relates to a method for testing the degree of cure of ink or varnish layers printed in one of the mass-printing offset, flexographic or intaglio printing methods.
  • the method of testing the degree of cure has an effect of the surface plasmon resonance effect and Literature is also often referred to as surface plasmon resonance (SPR) method.
  • SPR surface plasmon resonance
  • the curing of printing ink and lacquer layers can be done once by evaporation of solvents, by the removal of solvents in the substrate, by oxidation, by polymerization in conjunction with a UV or electron beam dryer or by a combination of the aforementioned drying mechanisms.
  • conventional printing inks are either oil-based or solvent-based.
  • Oil-based inks dry by oxidation of the oil-based binders or dry by evaporation of the volatile oils in the ink (heat-set).
  • radiation-curing printing inks and coatings cure by a photochemical process, which is also referred to as crosslinking.
  • the liquid or uncrosslinked ink film is converted into a solid state by the polymerization under the action of UV light.
  • Paint components are usually treated as hazardous waste. This requires a logistical overhead and usually generates additional costs for disposal.
  • DE 24 58 935 A1 discloses a measurement and control method of the speed of printing and coating machines in which the wavelengths corresponding to the solvents used are continuously analyzed on the paper web, the average values measured after drying being compared with the preset maximum values.
  • the measuring device contains an analyzer head with continuous radiation and a receiver for receiving the radiation, which reflects or penetrates the product to be analyzed.
  • the disadvantage of this method is that from the outset the solvent composition must be known. This is relatively simple in printing processes using simple solvent compositions, and the complexity is increasing in modern inks with a variety of solvents. As a rule, the supplier only announces the composition of the printing ink in coarse components. In addition, this process fails in printing processes that do not emit solvents.
  • SPR Surface Plasmon Resonance
  • Mieplasmonen can be observed in small, 20- 50 nm large metallic particles, such as in a colloidal gold dust suspension or in the so-called Goldrubingläsern.
  • the color is created by the absorption of light in the green spectral range, which resonances the surface charge density of the particles are excited.
  • the energy from the incident light flows to a part in quasi-static fields close to the surface.
  • the energy is radiated perpendicular to the direction of incidence of the light, and at two-dimensionally extended interfaces, such a resonance condition only occurs under certain irradiation conditions, in contrast to the zero-dimensional case In this case one speaks of surface plasmons.
  • FIG. 1 A typical setup that can be used to excite surface plasmons is shown in Figure 1 and known as the 'Kretschmann arrangement'.
  • a prism On a prism, a 50 nm thick layer of silver [gold] is vapor-deposited. It is illuminated by the prism. In this way it is possible to obtain a variation of the electric field with a wavelength corresponding to that of the plasmons along the silver [gold] air interface. With appropriate values for layer thickness and angle of incidence it can be achieved that the regular reflection is totally suppressed, whereby the excitation of the plasmons becomes maximum.
  • the wavelength of the plasmon strongly depends on the dielectric constant of the medium which is adjacent to the silver [gold].
  • EP 0 388 872 B1 represents a generic representative of the state of the art of such an investigation method by means of surface plasmon resonance. It discloses a method for investigating refractive index and / or height modulation of the surface of different surface structures, characterized in that these surface structures are a surface plasmon field are scanned and scanned by surface plasmon microscopy such that the surface structure is approximated by means of a device of a metal or semiconductor layer located on one side of a glass prism in parallel to this metal or semiconductor layer ,
  • the EP 0 388 872 B1 has no relation to the subject invention, the investigation of curing properties of printing inks and paints.
  • SPR sensors have become known that work with modified optical waveguides, while commercially available optical waveguides are used with a diameter of 1 micron up to 2000 microns.
  • the existing Ummante- lung of the optical waveguide is removed at the ends and other defined areas and then the optical waveguide is radially or partially radially provided at these points radially with a metal layer.
  • the front side of the optical waveguide can also be coated with a metal layer.
  • a generic representative of such an SPR sensor solution based on optical fibers can be found in WO 94/16312.
  • Planar SPR sensors as disclosed in WO 99/60382, are also suitable for the intended application.
  • Planar waveguides are gaining more and more attention in research and development in the field of integrated optics.
  • the refractive index of the support material or a layer provided thereon for this purpose must be smaller than that of the waveguiding Layer to guarantee a nearly lossless guidance of the light in the waveguide.
  • the production of such planar waveguides is carried out using known methods of semiconductor technology and integrated optics, such as CVD processes, sputtering, electron beam evaporation, spin-coating or various replication techniques.
  • defined areas of the planar waveguide are then provided with an SPR-capable planar metal layer (eg of gold, silver) which is in direct contact with both the waveguiding material and the sample to be characterized.
  • an SPR-capable planar metal layer eg of gold, silver
  • the aim of the invention is to determine the curing or drying of paint and ink layers on paper, film, or board substrates.
  • FIG. 2 shows a typical course of the refraction profile between a cured and an uncured sample printed on a substrate.
  • the refraction profile is very dependent on the angle of incidence. The measurements were made with a Kretschmar arrangement with a prism. As the substrate to be cured, an acrylate was used, as is typically used in the printing industry.
  • the SPR sensors are used directly in the printing press.
  • they can be lowered onto the irradiated substrate or brought into contact with it in another form.
  • the light emitted by the UV dryer if appropriate after filtering, is used as measuring light beam.
  • the sensors can be used at any time with an external light source, for example an external laser system.
  • the optical system of the SPR sensor e.g., a prism having an SPR-capable coating
  • the optical system of the SPR sensor may be attached to a circulating system, e.g. attached to a gripper system of the delivery gripper of a cantilever of a printing press, wherein the light emitting system, for example a laser, also controls the sensor system at a fixed location, e.g. can be attached to the frame or the cover of the boom.
  • a light pulse is triggered by a trigger signal, which impinges on the optical system of the SPR sensor, wherein the reflected light is then evaluated by the sensor system.
  • the optical system of the printed sheet on a cylinder of the printing press or in the delivery of a sheet-fed printing press can be pivoted or lowered onto the printed sheet, so that the optical system of the SPR sensor makes contact with the printed sheet surface.
  • SPR sensors based on optical waveguides and planar optical systems are particularly suitable as optical systems of the SPR sensor.
  • all measuring methods based on the SPR sensor technology can also be used offline, in that a sheet is produced by the machine operator. Taken and a not integrated into the printing machine SPR sensor device is supplied.
  • characteristic values for the curing of the printed sheet can be obtained by known evaluation algorithms. These characteristic values can be output either as an absolute signal or as a relative signal relative to a reference value.
  • the reference value may, for example, come from a database in which reference values for uncured and / or fully cured printed sheets are stored for certain classes of printing materials.
  • the reference value or values can also be redetermined for each print job with a given combination of materials, for example by using an uncured printed sheet and / or a very well-cured printed sheet as a reference.
  • Well-cured printed sheets can be achieved, for example, by passing the sheet as slowly as possible under the drying unit and / or twice below the drying unit.
  • the aim is to give at least information to the machine operator from the determined characteristic values.
  • This can e.g. via the central machine control station or a display on the measuring device, in which a value is displayed as an alphanumeric character or graphically.
  • the characteristic value is displayed in the form of a traffic light circuit, whereby red indicates insufficient curing, while in the case of a green display, the machine operator drives in the optimum.
  • the characteristic value is recorded via the overlay in order to obtain a quality protocol as proof of sufficient hardening.
  • a quality protocol can serve as proof of quality assurance, for example in the highly regulated field of food packaging.
  • the solution found according to the invention has the evaluation unit (computer) connected to the inline or offline SPR sensor system, a direct connection to the machine control and / or the dryer control. In the case of insufficient curing, the machine speed can thus be reduced in a direct control loop and / or the dryer output can be increased, if still possible. The intervention in the process can take place directly or after prior approval by the machine operator.
  • the SPR sensor system is suitable for checking the degree of curing of a printed product.
  • the process of drying the dryer and thus the product safety of printed products can be increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

La présente invention concerne un procédé de détermination du degré de durcissement ou du degré de séchage d'une ou de plusieurs couches d'encre et/ou de laque sur un substrat. Par exemple, une substance d'impression peut être imprimée sur du papier, du carton, des matières plastiques ou des matières composites dans des presses traitant des feuilles ou des bandes de matière, dans le cadre d'un processus d'impression en masse. L'invention s'applique à l'impression en héliogravure, l'impression flexographique, la sérigraphie ou l'impression offset. Pour garantir un séchage correct, le degré de durcissement ou le degré de séchage du produit d'impression au cours du passage par la presse ou sur un échantillon d'impression à l'extérieur de la presse, est déterminé au moyen d'un capteur de résonance plasmonique de surface (SPR). Selon l'invention, le signal de mesure reçu du capteur SPR alimente une unité d'évaluation et des paramètres en sont déduits, lesdits paramètres renseignant, de manière absolue ou par rapport à une ou plusieurs valeurs de référence, sur le degré de durcissement ou le degré de séchage du produit d'impression.
PCT/EP2009/060617 2008-09-05 2009-08-17 Procédé non destructif permettant de vérifier le degré de durcissement ou le degré de séchage de peintures et de laques Ceased WO2010026037A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09781906A EP2331332A1 (fr) 2008-09-05 2009-08-17 Procédé non destructif permettant de vérifier le degré de durcissement ou le degré de séchage de peintures et de laques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008041825.0 2008-09-05
DE102008041825A DE102008041825A1 (de) 2008-09-05 2008-09-05 Zerstörungsfreies Prüfverfahren des Aushärtungs- oder Trocknungsgrades von Farben und Lacken

Publications (1)

Publication Number Publication Date
WO2010026037A1 true WO2010026037A1 (fr) 2010-03-11

Family

ID=41119355

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/060617 Ceased WO2010026037A1 (fr) 2008-09-05 2009-08-17 Procédé non destructif permettant de vérifier le degré de durcissement ou le degré de séchage de peintures et de laques

Country Status (3)

Country Link
EP (1) EP2331332A1 (fr)
DE (1) DE102008041825A1 (fr)
WO (1) WO2010026037A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014124711A1 (fr) * 2013-02-12 2014-08-21 Windmöller & Hölscher Kg Dispositif de séchage, système présentant un dispositif de séchage ainsi que procédé de fonctionnement d'un dispositif de séchage pour le séchage entre mécanismes d'encrage dans une presse
EP3967495A1 (fr) * 2020-09-10 2022-03-16 Hubergroup Deutschland GmbH Système et procédé de commande pour machines d'impression permettant de régler et de surveiller les paramètres relatifs au séchage, à la migration et/ou à la réticulation
DE102022204371A1 (de) 2022-05-04 2023-11-09 Continental Automotive Technologies GmbH Vorrichtung zur Prüfung des Aushärtungszustandes von KTL beschichteten Bauteilen
CN117124743A (zh) * 2023-10-24 2023-11-28 苏州同里印刷科技股份有限公司 一种uv印刷紫外光固化调节机构及方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010042033A1 (de) * 2010-10-06 2012-04-12 Windmöller & Hölscher Kg Rotationsdruckmaschine zum Bedrucken eines Bedruckstoffes und Verfahren zum Überwachen von Kennwerten des auf den Bedruckstoff aufgebrachten Druckmittels
DE102011121689B4 (de) * 2011-01-13 2025-05-22 Heidelberger Druckmaschinen Ag Verfahren und Vorrichtung zur Ermittlung des Härtungsgrades von Druckfarben
DE102013224949A1 (de) * 2013-12-05 2015-06-11 Krones Ag Messung des Aushärtegrades der Bedruckung oder Beschichtung eines Behälters

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388872A2 (fr) * 1989-03-21 1990-09-26 BASF Aktiengesellschaft Méthode pour examiner des structures de surface
EP1839862A2 (fr) * 2006-04-01 2007-10-03 MAN Roland Druckmaschinen AG Procédé de commande d'une presse
EP1864800A2 (fr) * 2006-06-09 2007-12-12 Heidelberger Druckmaschinen Aktiengesellschaft Procédé destiné au calcul de paramètres de fonctionnement d'une presse
WO2008049187A1 (fr) * 2006-10-25 2008-05-02 Lxsix Photonics, Inc. Détecteur à réseau incliné

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2254436B1 (fr) 1973-12-13 1979-01-26 Holweg Const Mec
DE3909144A1 (de) * 1989-03-21 1990-09-27 Basf Ag Verfahren zur bestimmung von brechungsindex und schichtdicke duenner schichten
US5359681A (en) 1993-01-11 1994-10-25 University Of Washington Fiber optic sensor and methods and apparatus relating thereto
JPH08505951A (ja) * 1993-11-15 1996-06-25 カール ツアイス イエーナ ゲゼルシャフト 光学センサ表面に位置する物質を分析する装置
EP0863395B1 (fr) * 1997-02-07 2005-06-15 Fuji Photo Film Co., Ltd. Capteur de plasmons de surface
DE19737785C2 (de) 1997-08-29 2002-09-26 Heidelberger Druckmasch Ag Rotationsdruckmaschine mit einem Lackierwerk sowie einem dem Lackierwerk nachgeordneten Trockner
CA2319429A1 (fr) 1998-05-20 1999-11-25 Graffinity Pharmaceutical Design Gmbh Capteur de resonance de plasmons superficiels pour la mesure simultanee d'une pluralite d'echantillons sous forme fluide
DE20006483U1 (de) 2000-04-07 2000-07-20 MAN Roland Druckmaschinen AG, 63075 Offenbach Steuerung für die Trocknereinrichtung einer Druckmaschine
DE10019359C2 (de) * 2000-04-18 2002-11-07 Nanofilm Technologie Gmbh SPR-Sensor
KR20030047567A (ko) * 2001-12-11 2003-06-18 한국전자통신연구원 표면 플라즈몬 공명 센서 시스템
EP1654527A4 (fr) * 2003-08-01 2012-01-04 Ge Healthcare Bio Sciences Ab Unite d'analyse optique par resonance
JP2005077317A (ja) * 2003-09-02 2005-03-24 Fuji Photo Film Co Ltd 測定装置
US7362442B2 (en) * 2004-02-20 2008-04-22 The University Of Maryland Far-field optical microscope with a nanometer-scale resolution based on the in-plane image magnification by surface plasmon polaritons
US20070139653A1 (en) * 2005-06-07 2007-06-21 Guan Hann W MEMS Micromirror Surface Plasmon Resonance Biosensor and Method
EP1930715A1 (fr) * 2006-12-04 2008-06-11 Electronics And Telecommunications Research Institute Capteur à résonance à plasmons de surface capable d'effectuer un étalonnage absolu

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0388872A2 (fr) * 1989-03-21 1990-09-26 BASF Aktiengesellschaft Méthode pour examiner des structures de surface
EP1839862A2 (fr) * 2006-04-01 2007-10-03 MAN Roland Druckmaschinen AG Procédé de commande d'une presse
EP1864800A2 (fr) * 2006-06-09 2007-12-12 Heidelberger Druckmaschinen Aktiengesellschaft Procédé destiné au calcul de paramètres de fonctionnement d'une presse
WO2008049187A1 (fr) * 2006-10-25 2008-05-02 Lxsix Photonics, Inc. Détecteur à réseau incliné

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014124711A1 (fr) * 2013-02-12 2014-08-21 Windmöller & Hölscher Kg Dispositif de séchage, système présentant un dispositif de séchage ainsi que procédé de fonctionnement d'un dispositif de séchage pour le séchage entre mécanismes d'encrage dans une presse
US9840073B2 (en) 2013-02-12 2017-12-12 Windmöller & Hölscher Kg Drying device, system comprising a drying device and method for operating a drying device for drying between inking units of a printing machine
EP3967495A1 (fr) * 2020-09-10 2022-03-16 Hubergroup Deutschland GmbH Système et procédé de commande pour machines d'impression permettant de régler et de surveiller les paramètres relatifs au séchage, à la migration et/ou à la réticulation
DE102022204371A1 (de) 2022-05-04 2023-11-09 Continental Automotive Technologies GmbH Vorrichtung zur Prüfung des Aushärtungszustandes von KTL beschichteten Bauteilen
DE102022204371B4 (de) * 2022-05-04 2025-12-04 Continental Automotive Technologies GmbH Vorrichtung zur Prüfung des Aushärtungszustandes von KTL beschichteten Bauteilen
CN117124743A (zh) * 2023-10-24 2023-11-28 苏州同里印刷科技股份有限公司 一种uv印刷紫外光固化调节机构及方法
CN117124743B (zh) * 2023-10-24 2024-01-05 苏州同里印刷科技股份有限公司 一种uv印刷紫外光固化调节机构及方法

Also Published As

Publication number Publication date
DE102008041825A1 (de) 2010-03-11
EP2331332A1 (fr) 2011-06-15

Similar Documents

Publication Publication Date Title
EP2331332A1 (fr) Procédé non destructif permettant de vérifier le degré de durcissement ou le degré de séchage de peintures et de laques
DE102008014555A1 (de) Verfahren zur berührungslosen Prüfung des Härtungsgrades von Druckfarben- und Lackschichten
EP2313273B1 (fr) Procédé de réglage des couleurs d'une machine à imprimer
EP2759407B1 (fr) Procédé de réglage et dispositif pour determiner la distance optimale entre au moins deux cylindres impliqués dans un procédé d'impression
DE102008041427B4 (de) Verfahren zur automatischen Farbregelung in einem laufenden Druckprozess innerhalb einer Druckmaschine
DE102010001079B4 (de) Verfahren zur Überprüfung der Leistung von UV-Strahlern in einer Druckmaschine mittels UV-reaktiver Medien
EP1974918A2 (fr) Procédé de détermination du degré de durcissement ou de séchage de couches de couleurs d'impression ou de laque dans des presses
WO2016207315A1 (fr) Procédé de revêtement d'une surface d'une bande métallique ainsi que dispositif de revêtement d'une bande métallique
EP1839862A2 (fr) Procédé de commande d'une presse
DE102009037541A1 (de) Verfahren und Vorrichtung zur Messung des Härtungsgrades von UV-härtenden Farben und Lacken
DE10257981A1 (de) Farbsteuerung einer Druckmaschine mit spektralbasierter Farbmessung
WO1999002941A1 (fr) Procede et dispositif pour la determination de l'epaisseur de papier ou de carton par mesure sur une bande de materiau continue
DE19605520C1 (de) Verfahren und Vorrichtung zur Charakterisierung lackierter Oberflächen
EP0842414B2 (fr) Procede et dispositif pour la caracterisation de surfaces enduites de peinture
DE19537807C1 (de) Verfahren zum Feststellen von Schichten
DD241040A5 (de) Verfahren zur steuerung der schichtdicke einer schicht eines fluessigkeitsgemisches aus oelmaterial und wasser in einer druckmaschine
DE19732877A1 (de) Verfahren zur Bestimmung der Immobilisierung kolloider Beschichtungsdispersionen
EP1975607A2 (fr) Procédé de vérification non destructive du degré de durcissement ou de séchage de couleurs et de laques par ondes de surface
DE102009027009A1 (de) Bogenrotationsdruckmaschine
SK1472020A3 (sk) Metóda a aparatúra na meranie distribúcie pH v mikroštruktúre pórovitého materiálu
DE102005011739B4 (de) Verfahren zur Bestimmung bzw. Überprüfung der Durchhärtung eines mit Druckfarbe bedruckten Objektes, Prüfvorrichtung, deren Verwendung und Prüfanordnung
DE102009047657A1 (de) Verfahren zur Bestimmung des Härtunngsgrades oder Trockengrades von Druckfarben- und Lackschichten in Druckmaschinen
DE102006042795A1 (de) Verfahren und Vorrichtung zur Bestimmung des Aushärtungsgrades von Farb- oder Lackschichten auf Druckprodukten
WO2018219775A1 (fr) Détection d'emplacements défectueux secs sur des bandes d'acier huilées à l'aide de lumière uv
DE102019111318A1 (de) Verfahren zur Inspektion eines mit zumindest einem Druckfluid beaufschlagten Substrates und Druckmaschine mit zumindest einem Auftragwerk

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09781906

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009781906

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE