EP2566800B1 - Staubentfernende netzführung - Google Patents

Staubentfernende netzführung Download PDF

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Publication number
EP2566800B1
EP2566800B1 EP11777656.7A EP11777656A EP2566800B1 EP 2566800 B1 EP2566800 B1 EP 2566800B1 EP 11777656 A EP11777656 A EP 11777656A EP 2566800 B1 EP2566800 B1 EP 2566800B1
Authority
EP
European Patent Office
Prior art keywords
groove
web
longitudinal edge
downstream
abutment
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
EP11777656.7A
Other languages
English (en)
French (fr)
Other versions
EP2566800A1 (de
EP2566800A4 (de
Inventor
Mats Martinsson
Jakob RINGSTRÖM
Jan Jakobsson
Mats Hedse
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.)
Tetra Laval Holdings and Finance SA
Original Assignee
Tetra Laval Holdings and Finance SA
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 Tetra Laval Holdings and Finance SA filed Critical Tetra Laval Holdings and Finance SA
Publication of EP2566800A1 publication Critical patent/EP2566800A1/de
Publication of EP2566800A4 publication Critical patent/EP2566800A4/de
Application granted granted Critical
Publication of EP2566800B1 publication Critical patent/EP2566800B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/10—Feeding or positioning webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/02—Advancing webs by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/04—Cleaning by suction, with or without auxiliary action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/04—Cleaning by suction, with or without auxiliary action
    • B08B5/043—Cleaning travelling work
    • B08B5/046—Cleaning moving webs
    • 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
    • B41F23/002—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing cleaning devices for sheets or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B55/00—Preserving, protecting or purifying packages or package contents in association with packaging
    • B65B55/24—Cleaning of, or removing dust from, containers, wrappers, or packaging ; Preventing of fouling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/02—Feeding or positioning sheets, blanks or webs
    • B31B50/10—Feeding or positioning webs
    • B31B50/102—Feeding or positioning webs using rolls, belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • 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
    • B65H2301/511—Processing surface of handled material upon transport or guiding thereof, e.g. cleaning
    • B65H2301/5115—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/20—Avoiding or preventing undesirable effects
    • B65H2601/25—Damages to handled material
    • 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
    • B65H2801/81—Packaging machines

Definitions

  • the present invention relates to an apparatus for guiding a web of packaging material and removing dust from the same from an edge thereof.
  • the present invention relates to web guiding of a planar material web.
  • it relates to guiding of a web of packaging material used for packaging of food products.
  • Tetra Brik Aseptic registered trademark
  • Tetra Brik Aseptic as well as similar packages, may be manufactured by forming and sealing a strip-rolled packaging material.
  • the packaging material comprises a layer of fibrous material, such as paper, sandwiched between two or more layers of thermoplastic, such as polyethylene.
  • the side of the packaging material to be contacted by product may also comprise a barrier material layer, such as an aluminium layer, which in turn is covered by a layer of thermoplastic material.
  • the packaging material is sterilized, whereafter the two longitudinal edges of the packaging material are joined such as to form a continuous tube.
  • the tube of packaging material is filled with product, usually sterilized product, whereafter the tube is provided with transversal seals such as to form pillow-shaped packages that may be severed from the continuous tube and folded into individual packaging containers.
  • the material web may be cut into blanks in a first step, whereafter the blanks are folded into packaging containers, with or without addition of opening devices or similar packaging portions.
  • the present invention is particularly well-suited for the described type of packaging material, and also for situations where the packaging material is used for production of packages in which high level of sterilization is required (and where dust is explicitly undesired).
  • Prior art solutions for removing dust from paper web also include innumerable variations of vacuum cleaners and compressed air systems, which are not as such interesting for the present invention, and more thoroughly described in the previously mentioned application.
  • the web guide 10 includes a groove 11 in which one longitudinal edge of the paper web is intended to run.
  • the groove 11 extends throughout the entire web guide 10 and thus has open ends in the end pieces 10a, 10b of the guide apparatus 10. Seen from the end piece 10a (see Fig. 1 ), the groove 11 has a so-called keyhole configuration with an inner portion 11a in the transverse direction A which is of larger cross section than an outer portion 11b. Outermost, the groove 11 has a conical portion 11c which forms a funnel which opens towards the paper web.
  • the web guide 10 is of one piece construction from an easily processed material, such as some suitable form of plastic.
  • the keyhole shape of the groove 11 is employed for securing a rule 12 which forms an abutment surface for the bypassing longitudinal edge the web.
  • the rule 12 is made of a harder material such as, for example, a metal.
  • the rule 12 is, for example, formed from a rod which has been provided with a planar surface 12b. In its ends, the rule 12 has been provided with bevels 12c, 12d in order to commence and terminate the contact with the longitudinal edge of the web in a gentle manner.
  • the guide apparatus 10 is provided with two clamping wheels 13a, 13b which rotate freely and which between them clamp the web.
  • the abutment surface 12b of the rule 12 extends in the same direction as the running direction A of the web and the wheels 13a, 13b are obliquely inclined a few degrees ⁇ so that they draw the web outwards somewhat towards the guide apparatus 10 (see Fig. 2 ) in the transverse direction B of the web.
  • the walls 11d and 11e of the groove display a first extent in the transverse direction B.
  • the walls 11d, 11e display a second extent in the transverse direction B which is greater than the above mentioned first extent.
  • the first portion 10c of the guide apparatus in the transport direction A has a groove 11 which only displays the circular cross section 11a and the straight walls 11b out towards the web, while the second portion 10d has a groove 11 which also displays the funnel-shaped portion 11c open towards the web.
  • the guide apparatus is further provided with an aperture 14 to which a partial vacuum (not shown) is extended to be connected.
  • This source of partial vacuum may be a standard vacuum cleaner which delivers a vacuum of the order of magnitude of 10-20%, i.e. 0,1-0,2 bars partial vacuum.
  • This aperture 14 is, via a channel in the guide apparatus, in communication with an aperture 15 which discharges in the bottom of the groove 11 in the centre of the above mentioned portion 10d with long groove walls 11d, 11e.
  • the funnel-shaped walls 11e, 11d have been provided with a bore 16 which extends directly down to the aperture 15 in the bottom of the groove 11.
  • the rule 12 is designed so that it extends into the portion 10d displaying long groove walls 11d, 11e and terminates by a bevel 12d immediately before the aperture 15 in the bottom of the groove 11.
  • the present invention aims at providing such improved web guide enabling efficient dust removal with limited air mass flow, while providing additional beneficial features.
  • the present invention provides an apparatus for guiding a web of packaging material, according to claim 1.
  • the advantages following from the inventive characteristics are disclosed in the following detailed description. In the detailed description several characteristics may be combined in a single embodiment, which should not be construed as that the different characteristics have to be used in combination - only that it is possible to do so.
  • the suction orifices may be arranged in two series on either side of a longitudinal axis of symmetry of the groove, and in one or more related embodiments the series may be arranged symmetrically on either side of said longitudinal axis.
  • the groove may in one or several embodiments be V-shaped and arranged to receive the web at the tip of the V-shape.
  • the V-shaped groove is provided in an assembly comprising a cylinder sector, thus creating a manifold in the shape of a cylinder with a V-shaped cut in the longitudinal direction, and a portion of the tubing.
  • the resulting assembly is insertable in a circular through hole of the apparatus.
  • the bottom of the groove slopes away from the web in a downstream region and in a downstream direction, in order to provide a smooth release of the abutment between the groove and the longitudinal edge of the web, and in another embodiment the bottom of the groove slopes away from the web in an upstream region and in an upstream direction, in order to provide a smooth initiation of the abutment between the groove and the longitudinal edge of the web.
  • the bottom of the groove may in one or several embodiments follow a rectilinear path from an upstream region or a downstream region.
  • a suction opening is arranged along the axis of symmetry of the groove, at a downstream half of the apparatus, for instance in said downstream region where, in use, the abutment of the longitudinal edge of a web has ceased.
  • an underpressure of about 1-5 kPa, preferably 1-2 kPa, may be used for achieving an adequate effect.
  • a web of packaging material (not shown) is arranged to run in the direction indicated by arrow A, having one longitudinal edge arranged in the slot 120 and abutting onto the bottom of a V-shaped groove 111.
  • a pair of clamping wheels or guide wheels 113a, 113b are arranged to clamp the web of packaging material and bias it towards the bottom of the V-shaped groove 111.
  • the plane in which the guide wheels 113, a, b rotate is inclined relative to a plane including the arrow A, which is described in general and in detail in the cited application, which description is applicable for the present application too.
  • the slot 120 is of essentially constant width, but for the upstream end and the downstream end thereof, where its width increases, which is shown in Figs. 4 and 5 .
  • the groove 111 extends along the entire apparatus 110 and the bottom thereof, at the interior tip of the V-shape, provides an abutment surface for the longitudinal edge of the web.
  • Fig.5 it is shown how a series of suction orifices 115 are arranged on one leg of the V-shape, and a similar series is arranged on the opposing leg of the V-shape. This arrangement will provide a symmetrical suction power, and prevent the web of material from leaning in one direction or the other.
  • the V-shape 111 itself will constitute a well-defined guide for said longitudinal edge.
  • the V-shaped groove is accomplished by arranging a groove assembly 121 in a cylindrical bore 122 extending in the longitudinal direction, which is shown in Fig.
  • the assembly 121 (see also Fig. 7 ) comprises a cylinder sector combined with the V-shaped groove 111 forming a delimitation thereof, and may be slid into the cylindrical bore 122.
  • a tubing 114 providing the partial vacuum may form part of the assembly 121 and is consequently provided in a readily manner as well.
  • a locking bolt 128 (see Fig. 5 ) is used to lock the assembly 121 into position. This may be a convenient way of manufacturing an apparatus fulfilling the inventive purpose.
  • the interior of the assembly 121 will constitute a plenum common for the suction orifices 115, and by applying an underpressure in to this plenum, via the tubing 114 the suction orifices 115 will be operational and start fulfilling their function.
  • the entire guide apparatus is slidably arranged on rods (not shown) passing through the openings 124, which facilitates continuous movement along the B-direction (i.e. in the cross direction of the guided web). By tightening locking bolts 126 it is possible to lock the guide apparatus into place on the rods.
  • the bottom of the groove 111 slopes away from the longitudinal edge of the web in a downstream region 111D and in a downstream direction. This slope is arranged to provide a smooth release of the abutment between the groove and the longitudinal edge of the web.
  • the bottom of the groove 111 may slope away from the web in an upstream region 111U and in an upstream direction, in order to provide a smooth initiation of the abutment between the groove and the longitudinal edge of the web. Between these sloping regions the bottom of the V-shaped groove may be essentially rectilinear.
  • At least one additional suction opening may be arranged in a location along the longitudinal axis of the groove 111 (e.g. in the bottom thereof). It may e.g. be arranged in the downstream region 111D to free the longitudinal edge from dust and debris as it terminates engagement with the bottom of the V-shaped groove 111.
  • This suction opening may be in fluid communication with the same plenum as the other suction orifices 115, yet it may also have an underpressure supply of its own.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Basic Packing Technique (AREA)
  • Advancing Webs (AREA)

Claims (10)

  1. Vorrichtung, die zur Führung einer Bahn Verpackungsmaterial ausgelegt ist, umfassend eine Nut (111), die sich entlang der Transportrichtung (A) der Bahn erstreckt, wobei eine Längskante der Bahn beim Vorschub der Bahn in der Nut (111) verlaufen und an einen Boden der Nut (111) angrenzen soll, dadurch gekennzeichnet, dass die Nut (111) ferner Saugdüsen (115) umfasst, die entlang der Länge der Nut (111) verteilt sind und durch die ein Teilvakuum über ein Rohr (114) aufgebracht wird, um Luft und Staub aus der Nut (111) und deren Umgebung zu entfernen, ferner umfassend eine Saugöffnung, die entlang der Symmetrieachse der Nut (111) in einer stromabwärts gelegenen Hälfte der Vorrichtung angeordnet ist.
  2. Vorrichtung nach Anspruch 1, wobei die Saugdüsen in zwei Reihen auf jeder Seite einer Längssymmetrieachse der Nut (111) angeordnet sind.
  3. Vorrichtung nach Anspruch 2, wobei die Reihen symmetrisch auf jeder Seite der Längsachse angeordnet sind.
  4. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei die Nut (111) V-förmig und so angeordnet ist, dass sie die Bahn an der Spitze der V-Form aufnimmt.
  5. Vorrichtung nach Anspruch 4, wobei die V-förmige Nut zu einer Anordnung (121) mit einem Zylinderabschnitt, somit einen Verteilerkanal in Form eines Zylinders mit einem V-förmigen Schnitt in Längsrichtung schaffend, und mit einem Abschnitt des Rohrs (114) an einem Ende desselben kombiniert ist, wobei die Anordnung in eine Durchgangsöffnung der Vorrichtung einsetzbar ist.
  6. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei sich der Boden der Nut (111) weg von einer geführten Bahn in einen stromabwärts gelegenen Bereich und in eine stromabwärts führende Richtung neigt, um eine problemlose Loslösung der Angrenzung zwischen der Nut und der Längskante der Bahn bereitzustellen.
  7. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei sich der Boden der Nut (111) weg von der Bahn in einen stromaufwärts gelegenen Bereich und in eine stromaufwärts führende Richtung neigt, um eine problemlose Einleitung der Angrenzung zwischen der Nut und der Längskante der Bahn bereitzustellen.
  8. Vorrichtung nach einem der vorhergehenden Ansprüche, wobei sich der Boden der Nut entlang einem geradlinigen Weg von einem stromaufwärts gelegenen Bereich oder einem stromabwärts gelegenen Bereich erstreckt.
  9. Vorrichtung nach Anspruch 1 und 6, wobei die Saugöffnung in dem stromabwärts gelegenen Bereich angeordnet ist, wo die Angrenzung der Längskante einer Bahn im Gebrauch aufgehört hat zu existieren.
  10. Vorrichtung nach einem der vorhergehenden Ansprüche, die einen Unterdruck von ungefähr 1 bis 5 kPa, vorzugsweise 1 bis 2 kPa, nutzt.
EP11777656.7A 2010-05-05 2011-05-02 Staubentfernende netzführung Active EP2566800B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1000456A SE1000456A1 (sv) 2010-05-05 2010-05-05 Dust removing web guide
PCT/SE2011/050546 WO2011139219A1 (en) 2010-05-05 2011-05-02 Dust removing web guide

Publications (3)

Publication Number Publication Date
EP2566800A1 EP2566800A1 (de) 2013-03-13
EP2566800A4 EP2566800A4 (de) 2014-01-15
EP2566800B1 true EP2566800B1 (de) 2018-07-18

Family

ID=44903899

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11777656.7A Active EP2566800B1 (de) 2010-05-05 2011-05-02 Staubentfernende netzführung

Country Status (6)

Country Link
EP (1) EP2566800B1 (de)
AR (1) AR081460A1 (de)
BR (1) BR112012027319A2 (de)
RU (1) RU2012152083A (de)
SE (1) SE1000456A1 (de)
WO (1) WO2011139219A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013152984A1 (en) 2012-04-10 2013-10-17 Tetra Laval Holdings & Finance S.A. Edge cleaner
CN106743880B (zh) * 2017-04-05 2018-04-06 华北电力大学 一种具有上下自动吸尘的布料中间输送装置
CN106829592B (zh) * 2017-04-05 2018-04-20 蒙城县快乐行户外用品有限公司 一种具有自动吸尘机构的布料中间输送装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2311580A1 (de) * 2009-10-16 2011-04-20 Shinko Co., Ltd. Staubentfernungsvorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8107374L (sv) * 1981-12-09 1983-06-10 Kelva Ab Banrenare
DE29618023U1 (de) * 1996-10-17 1997-01-16 Strauch, Helmut, 97483 Eltmann Vorrichtung zum Reinigen der Papieroberfläche an einer laufenden Papierbahn in einer Papiermaschine
JP4876265B2 (ja) * 2001-08-08 2012-02-15 国際技術開発株式会社 シート部材の塵除去装置、及びシート部材検査装置
US6868785B2 (en) * 2002-03-13 2005-03-22 Goss International Corporation De-Duster for a moving printing material web and cutting device, folder and printing press having the de-duster
SE523995C2 (sv) * 2002-11-07 2004-06-15 Tetra Laval Holdings & Finance Anordning för styrning av en bana av förpackningsmaterial samt sätt att avlägsna damm
ATE484453T1 (de) * 2004-12-23 2010-10-15 Tetra Laval Holdings & Finance Maschine zum verpacken fliessfähiger nahrungsmittel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2311580A1 (de) * 2009-10-16 2011-04-20 Shinko Co., Ltd. Staubentfernungsvorrichtung

Also Published As

Publication number Publication date
SE1000456A1 (sv) 2011-11-06
EP2566800A1 (de) 2013-03-13
BR112012027319A2 (pt) 2016-08-02
AR081460A1 (es) 2012-09-05
RU2012152083A (ru) 2014-06-10
WO2011139219A1 (en) 2011-11-10
EP2566800A4 (de) 2014-01-15

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