EP2965900A1 - Method and device for producing flexible packaging products, in particular packaging bags - Google Patents

Method and device for producing flexible packaging products, in particular packaging bags Download PDF

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Publication number
EP2965900A1
EP2965900A1 EP14176376.3A EP14176376A EP2965900A1 EP 2965900 A1 EP2965900 A1 EP 2965900A1 EP 14176376 A EP14176376 A EP 14176376A EP 2965900 A1 EP2965900 A1 EP 2965900A1
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EP
European Patent Office
Prior art keywords
film
film sections
station
packaging products
sections
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Withdrawn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
EP14176376.3A
Other languages
German (de)
French (fr)
Inventor
Martin Kropf
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.)
Cellpack AG
Original Assignee
Cellpack 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 Cellpack AG filed Critical Cellpack AG
Priority to EP14176376.3A priority Critical patent/EP2965900A1/en
Priority to JP2017500842A priority patent/JP2017528338A/en
Priority to CN201580037509.6A priority patent/CN106536387B/en
Priority to PT157343914T priority patent/PT3172044T/en
Priority to EP15734391.4A priority patent/EP3172044B1/en
Priority to PCT/EP2015/065452 priority patent/WO2016005375A1/en
Priority to ES15734391.4T priority patent/ES2680473T3/en
Priority to US15/324,238 priority patent/US20170157881A1/en
Priority to TR2018/11312T priority patent/TR201811312T4/en
Publication of EP2965900A1 publication Critical patent/EP2965900A1/en
Withdrawn legal-status Critical Current

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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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/005—Making flexible containers, e.g. envelopes or bags involving a particular layout of the machinery or relative arrangement of its subunits
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B31B70/642—Uniting opposed surfaces or edges; Taping by applying heat or pressure using sealing jaws or sealing dies
    • 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
    • B65H20/20—Advancing webs by web-penetrating means, e.g. pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/16—Delivering or advancing articles from machines; Advancing articles to or into piles by contact of one face only with moving tapes, bands, or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/16—Feeding articles separated from piles; Feeding articles to machines by pusher, needles, friction, or like devices adapted to feed single articles along a surface or table
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/002—Flexible containers made from sheets or blanks, e.g. from flattened tubes by joining superimposed sheets, e.g. with separate bottom sheets
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B31B2160/102—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from essentially rectangular sheets
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B31B2160/106—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from sheets cut from larger sheets or webs before finishing the bag forming operations
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/006—Controlling; Regulating; Measuring; Safety measures
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/04—Feeding sheets or blanks
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/10—Feeding or positioning webs
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/16—Cutting webs
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/23—Belts with auxiliary handling means
    • B65H2404/234—Belts with auxiliary handling means penetrating 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
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/264—Arrangement of side-by-side belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/30—Chains
    • B65H2404/31—Chains with auxiliary handling means
    • B65H2404/314—Means penetrating in handled material, e.g. needle, pin
    • B65H2404/3141—Wicket pins
    • 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
    • B65H2406/34—Suction grippers
    • 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
    • B65H2701/19—Specific article or web
    • B65H2701/191—Bags, sachets and pouches or the like

Definitions

  • the invention relates to a method for producing flexible packaging products according to the preamble of patent claim 1.
  • the film material should have a consistent and most advantageous coefficient of friction on the whole role. Too smooth slides slip preference in the rollers or grippers, too blunt films tend to wrinkles in deflections. Often desired slip properties are sought with lubricant additives, which are applied to the films or incorporated into the film material. These equipments are expensive, difficult to produce reliably, and lose the desired duration of action over the shelf life of the films due to migration of the lubricant additives in the film layers. In addition, the lubricants may pose health risks to the consumers of such packaged products. Another method for achieving desired sliding properties is to structure the film surface by means of mechanical embossing. Here, too, the effect on the storage time can be reduced by the mechanical imprinting regresses. A favorable in itself and meaningful for the market printing of the film surface is hardly used in the described preferred technique for the reasons described above. An optionally existing printing on the film material can adversely affect the coefficient of friction and the printing must not be damaged by the sliding transport of the film material.
  • the present invention seeks to propose a method for the production of flexible packaging products, in which the requirements for the film material are reduced to a minimum, while increasing production reliability, minimizing material subsidies for welds and Edge trimming and minimization of rejects.
  • this solution according to the invention has the advantage that no further transfer of the film sections occurs due to the maintenance of the positive connection after transfer of the film sections to the fixing devices, thereby avoiding inaccuracies during welding and any further work steps.
  • the film sections can be exposed during transport without overuse of the film material significantly higher accelerations than would be the case if, as in the prior art, the whole film web would have to be moved.
  • the invention also relates to a device according to the preamble of independent claim 5, which achieves the same object as the method according to claim 1.
  • FIG. 1 can be seen as a central element, a transport device 1, which consists in the illustrated embodiment of two parallel, synchronously driven chain conveyors 2, the foil sections 4 convey in a transport direction 5. But it can also be provided only a single chain conveyor 2. Instead of chain conveyors, other transport devices may be provided, for example circulating belts or cables, or transport units driven by a screw conveyor or individual linear motors. Several fixing devices, which will be discussed in more detail later, are used for the positive fixing of the film sections 4 on the chain conveyor 2. For feeding the transport device 1 with film sections 4 are in the FIG. 1 two alternative arrangements are shown, wherein the corresponding reference numbers are each denoted by a letter a or b.
  • the variant a denotes a feed of the film sections 4 transversely to the transport direction 5
  • the variant b denotes a feeding of the film sections 4 in the transport direction.
  • Both variants a and b each comprise a supply roll 6a or 6b, from which a film web 7a or 7b is unwound.
  • Roller pairs 8a and 8b provide for the unwinding of the film web from the supply roll and the feeding of the film web to a cutting device 9a or 9b, are cut with the film sections 4 of the film web 7a and 7b.
  • the supply roll 6a or 6b in the present example contains two film layers, which are either present separately or formed by folding a film web. Also, for example, a film layer for the production of bottom pleated bags already incorporated and connected, for example, by selective adhesive welds with the other film webs. But it is also possible to provide each layer of film on a separate supply roll.
  • a positioning device 10 which can be moved in all directions, as indicated by the arrow group 11, has the task of gripping the film sections 4 separated by the cutting device 9a or 9b and positioning them exactly on the fixing devices 3.
  • the positioning device can be equipped with vacuum grippers.
  • the exact positioning is preferably carried out with the aid of markings which are printed or embossed on the film web 7a or 7b, whereby any inaccuracies caused by stretching or shrinking of the film web can be compensated for by placing the film sections 4 correspondingly on the fixing devices 3. This is a significant advantage over the conventional type of production on a web, where inaccuracies can add up.
  • the fixing devices 3 are formed in the present example as needle groups which penetrate the film sections 4. Hold-down devices, not shown, ensure that the film sections 4 do not detach from the needle groups during transport.
  • the fixing means 3 may include areas which are impressed in the film sections 4. These areas can be formed, for example, by conical or pyramidal elevations, wherein the hold-downs have suitable depressions into which the elevations mentioned urge the relevant areas of the film sections 4.
  • the fixing devices 3 are arranged on the parallel chain conveyors 2, such that two parallel side edges of the film sections 4 are fixed through them, as seen in the transport direction 5.
  • Reference numeral 12 designates a welding station comprising an upper tool 13 and a lower tool 14, each being at least vertically movable, as indicated by the double arrows 15 and 16.
  • the representation of the device is the sake of clarity, aborted right next to the welding station 12.
  • the device may include other workstations, for example, as another welding station, cooling station, cutting station, assembly station, for example, for Einschweissmaschine, inspection station or removal station for finished packaging bag as well as remaining in the fixing devices 3 edge portions can be trained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packaging Of Special Articles (AREA)

Abstract

Das Verfahren dient zur Herstellung flexibler Verpackungserzeugnisse, insbesondere Verpackungsbeutel, wobei die Verpackungserzeugnisse durch Verschweissen zweier Folienlagen gebildet werden. Um Ungenauigkeiten bei der Abfolge der Arbeitsschritte zu vermeiden, werden durch Folienlagen gebildete Folienabschnitte (4) von einer Folienbahn (7a; 7b) abgetrennt, einer Transportvorrichtung (1) übergeben und dort an mindestens einem Rand mit einer Fixiereinrichtung (3) formschlüssig fixiert. Dann werden die Folienabschnitte (4) mittels der Transportvorrichtung (1) in einer Transportrichtung (5) unter Aufrechterhaltung des Formschlusses zu mindestens einer Schweiss-Station (12) transportiert, die Folienlagen dort miteinander verschweisst und die Folienabschnitte (4) anschliessend unter Aufrechterhaltung des Formschlusses weiter transportiert.The method is used to produce flexible packaging products, in particular packaging bags, wherein the packaging products are formed by welding two film layers. In order to avoid inaccuracies in the sequence of work steps, film sections (4) formed by film layers are separated from a film web (7a, 7b), transferred to a transport device (1) and fixed there in a form-fitting manner on at least one edge with a fixing device (3). Then, the film sections (4) by means of the transport device (1) in a transport direction (5) while maintaining the positive connection transported to at least one welding station (12), the film layers there welded together and the film sections (4), while maintaining the positive connection transported further.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung flexibler Verpackungserzeugnisse nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for producing flexible packaging products according to the preamble of patent claim 1.

Es ist bekannt, Verpackungserzeugnisse aus bandförmigem Folienmaterial, das auf Rollen angeliefert wird, herzustellen. Der Vorschub des Folienmaterials erfolgt dabei entweder durch Walzenpaare oder durch entlang einer Herstellungsanlage angeordnete Greifer, die das Folienmaterial schrittweise transportieren. Dadurch werden an das Folienmaterial Ansprüche gestellt, die nicht durch den Verpackungszweck und Inhalt bedingt sind, sondern vorwiegend durch das Herstellungsverfahren. Die auf das Folienmaterial ausgeübten Zugkräfte erfordern ein Material, das eine hohe Zugfestigkeit und eine geringe Dehnung aufweist, auch bei relativ hohen Temperaturen von bis über 200 Grad Celsius, wie sie beim Schweissen auftreten. Beim Vorschub durch Greifer muss das Folienmaterial auch eine gewisse Steifigkeit haben, da auch immer ein Bereich der Bahn durch die Greifer geschoben wird. Deshalb ist die Verarbeitung dünner Folien mit diesen bekannten Methoden schwierig.It is known to produce packaging products from belt-shaped sheet material which is supplied on rolls. The feed of the film material is carried out either by pairs of rollers or arranged along a manufacturing plant grippers that transport the film material gradually. As a result, claims are made on the film material that are not due to the packaging purpose and content, but primarily by the manufacturing process. The tensile forces exerted on the sheet material require a material which has high tensile strength and low elongation, even at relatively high temperatures of up to over 200 degrees Celsius, such as occur during welding. When feeding by gripper the film material must also have a certain rigidity, as always a portion of the web is pushed through the gripper. Therefore, the processing of thin films with these known methods is difficult.

Das Folienmaterial sollte auf der ganzen Rolle einen gleichbleibenden und möglichst vorteilhaften Reibungskoeffizienten aufweisen. Zu glatte Folien rutschen beim Vorzug in den Walzen oder Greifern, zu stumpfe Folien neigen zu Faltenbildung bei Umlenkungen. Oftmals werden gewünschte Gleiteigenschaften mit Gleitmittelzusätzen angestrebt, die auf die Folien aufgetragen oder in das Folienmaterial eingearbeitet werden. Diese Ausrüstungen sind teuer, schwierig prozesssicher herzustellen und verlieren über die Lagerdauer der Folien an der gewünschten Wirkung durch die Wanderung der Gleitmittelzusätze in den Folienlagen. Zudem können durch die Gleitmittel möglicherweise gesundheitliche Risiken für die Verbraucher so verpackter Produkte entstehen. Eine andere Methode zum Erzielen gewünschter Gleiteigenschaften besteht darin, die Folienoberfläche mittels mechanischer Prägung zu strukturieren. Auch dabei kann die Wirkung über die Lagerdauer nachlassen, indem sich die mechanische Prägung zurückbildet. Eine an sich günstige und für den Markt sinnvolle Bedruckung der Folienoberfläche wird bei der beschriebenen Vorzugstechnik aus den oben beschriebenen Gründen kaum eingesetzt. Eine gegebenenfalls vorhandene Bedruckung auf dem Folienmaterial kann den Reibungskoeffizienten negativ beeinflussen und die Bedruckung darf durch den gleitenden Transport des Folienmaterials nicht beschädigt werden.The film material should have a consistent and most advantageous coefficient of friction on the whole role. Too smooth slides slip preference in the rollers or grippers, too blunt films tend to wrinkles in deflections. Often desired slip properties are sought with lubricant additives, which are applied to the films or incorporated into the film material. These equipments are expensive, difficult to produce reliably, and lose the desired duration of action over the shelf life of the films due to migration of the lubricant additives in the film layers. In addition, the lubricants may pose health risks to the consumers of such packaged products. Another method for achieving desired sliding properties is to structure the film surface by means of mechanical embossing. Here, too, the effect on the storage time can be reduced by the mechanical imprinting regresses. A favorable in itself and meaningful for the market printing of the film surface is hardly used in the described preferred technique for the reasons described above. An optionally existing printing on the film material can adversely affect the coefficient of friction and the printing must not be damaged by the sliding transport of the film material.

Weitere Nachteile dieser bekannten Herstellungsverfahren bestehen darin, dass beim Einsetzen und Wechseln der Folienrollen ein erheblicher Anfahr-Ausschuss entsteht, unter anderem weil das Folienmaterial jeder neuen Rolle über einen eigenen Gleitkoeffizienten verfügt und die Herstellungsanlage auf die neuen Vorzugsbedingungen eingestellt werden muss. Die damit verbundene wechselnde Dehnung der Folienbahnen führt zu Ungenauigkeiten und zu Ausschuss. Ausserdem erfordern die beschriebenen Verfahren breitere Schweissnähte als dies für den jeweiligen Verpackungszweck notwendig wäre, damit Ungenauigkeiten und Schwankungen bei der Führung des Folienmaterials durch die erstellungsanlage ausgeglichen werden können. Entsprechend entsteht schliesslich durch die schwankenden Positionen beim Vorzug Abfall durch das Beschneiden der Ränder der Verpackungserzeugnisse.Other disadvantages of these known manufacturing methods are that when inserting and changing the film rolls a significant start-off committee arises, among other things, because the film material of each new role has its own coefficient of friction and the manufacturing plant must be set to the new preferential conditions. The associated changing elongation of the film webs leads to inaccuracies and rejects. In addition, the methods described require wider welds than would be necessary for the particular packaging purpose, so that inaccuracies and fluctuations in the management of the film material can be compensated by the plant installation. Accordingly, waste tends to be created by trimming the edges of the packaging products due to the fluctuating positions of preference.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zu Grunde, ein Verfahren zur Herstellung von flexiblen Verpackungserzeugnissen vorzuschlagen, bei dem die Anforderungen an das Folienmaterial auf ein Minimum reduziert werden, bei gleichzeitiger Steigerung der Produktions-Zuverlässigkeit, Minimierung von Materialzuschüssen für Schweissnähte und Randbeschnitte sowie Minimierung von Ausschuss.Based on this prior art, the present invention seeks to propose a method for the production of flexible packaging products, in which the requirements for the film material are reduced to a minimum, while increasing production reliability, minimizing material subsidies for welds and Edge trimming and minimization of rejects.

Diese Aufgabe wird erfindungsgemäss durch die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Merkmale gelöst.This object is achieved according to the invention by the features stated in the characterizing part of patent claim 1.

Diese erfindungsgemässe Lösung hat insbesondere den Vorteil, dass durch die Aufrechterhaltung des Formschlusses nach dem Übergeben der Folienabschnitte an die Fixiereinrichtungen keine weitere Übergabe der Folienabschnitte erfolgt und dadurch Ungenauigkeiten beim Schweissen und allfälligen weiteren Arbeitsschritten vermieden werden. Ausserdem können die Folienabschnitte beim Transport ohne Überbeanspruchung des Folienmaterials wesentlich höheren Beschleunigungen ausgesetzt werden, als dies der Fall wäre, wenn wie beim bekannten Stand der Technik die ganze Folienbahn bewegt werden müsste.In particular, this solution according to the invention has the advantage that no further transfer of the film sections occurs due to the maintenance of the positive connection after transfer of the film sections to the fixing devices, thereby avoiding inaccuracies during welding and any further work steps. In addition, the film sections can be exposed during transport without overuse of the film material significantly higher accelerations than would be the case if, as in the prior art, the whole film web would have to be moved.

Besondere Ausführungsarten des Verfahrens sind in den abhängigen Ansprüchen umschrieben.Particular embodiments of the method are described in the dependent claims.

Die Erfindung betrifft auch eine Vorrichtung nach dem Oberbegriff des unabhängigen Patentanspruchs 5, welche die gleiche Aufgabe löst wie das Verfahren gemäss Patentanspruch 1.The invention also relates to a device according to the preamble of independent claim 5, which achieves the same object as the method according to claim 1.

Besondere Ausführungsarten der Vorrichtung sind in den abhängigen Ansprüchen 6 bis 15 umschrieben.Particular embodiments of the device are described in the dependent claims 6 to 15.

Ausführungsbeispiele der Erfindung werden nachstehend unter Bezugnahme auf die Zeichnung erläutert. Es zeigt

Figur 1
eine schematische, perspektivische Ansicht von zwei Ausführungsarten einer Vorrichtung zur Durchführung des erfindungsgemässen Verfahrens.
Embodiments of the invention will be explained below with reference to the drawings. It shows
FIG. 1
a schematic perspective view of two embodiments of an apparatus for performing the inventive method.

In Figur 1 erkennt man als zentrales Element eine Transportvorrichtung 1, die im dargestellten Ausführungsbeispiel aus zwei parallelen, synchron antreibbaren Kettenförderern 2 besteht, die Folienabschnitte 4 in einer Transportrichtung 5 befördern. Es kann aber auch nur ein einziger Kettenförderer 2 vorgesehen sein. Anstelle von Kettenförderern können andere Transportvorrichtungen vorgesehen werden, beispiesweise umlaufende Riemen oder Kabel, oder durch einen Schneckenanrtieb oder individuelle Linearmotoren angetriebene Transporteinheiten. Mehrere Fixiereinrichtungen, auf die später noch näher eingegangen wird, dienen zur formschlüssigen Fixierung der Folienabschnitte 4 am Kettenförderer 2. Zur Beschickung der Transportvorrichtung 1 mit Folienabschnitten 4 sind in der Figur 1 zwei alternative Anordnungen dargestellt, wobei die entsprechenden Bezugszahlen jeweils durch einen Buchstaben a bzw. b bezeichnet sind. Die Variante a bezeichnet eine Zuführung der Folienabschnitte 4 quer zur Transportrichtung 5, während die Variante b eine Zuführung der Folienabschnitte 4 in Transportrichtung bezeichnet. Beide Varianten a und b umfassen jeweils eine Vorratsrolle 6a bzw. 6b, von der eine Folienbahn 7a bzw. 7b abgewickelt wird. Walzenpaare 8a bzw. 8b sorgen für das Abwickeln der Folienbahn von der Vorratsrolle und die Zuführung der Folienbahn zu einer Schneidvorrichtung 9a bzw. 9b, mit der Folienabschnitte 4 von der Folienbahn 7a bzw. 7b abgeschnitten werden.In FIG. 1 can be seen as a central element, a transport device 1, which consists in the illustrated embodiment of two parallel, synchronously driven chain conveyors 2, the foil sections 4 convey in a transport direction 5. But it can also be provided only a single chain conveyor 2. Instead of chain conveyors, other transport devices may be provided, for example circulating belts or cables, or transport units driven by a screw conveyor or individual linear motors. Several fixing devices, which will be discussed in more detail later, are used for the positive fixing of the film sections 4 on the chain conveyor 2. For feeding the transport device 1 with film sections 4 are in the FIG. 1 two alternative arrangements are shown, wherein the corresponding reference numbers are each denoted by a letter a or b. The variant a denotes a feed of the film sections 4 transversely to the transport direction 5, while the variant b denotes a feeding of the film sections 4 in the transport direction. Both variants a and b each comprise a supply roll 6a or 6b, from which a film web 7a or 7b is unwound. Roller pairs 8a and 8b provide for the unwinding of the film web from the supply roll and the feeding of the film web to a cutting device 9a or 9b, are cut with the film sections 4 of the film web 7a and 7b.

Die Vorratsrolle 6a bzw. 6b enthält im vorliegenden Beispiel zwei Folienlagen, die entweder separat vorhanden oder durch Falten einer Folienbahn gebildet sind. Auch kann beispielsweise eine Folienlage für die Herstellung von Bodenfaltenbeuteln bereits eingearbeitet und beispielsweise durch punktuelle Haftschweissungen mit den anderen Folienbahnen verbunden sein. Es ist aber auch möglich, jede Folienlage auf einer separaten Vorratsrolle bereitzustellen.The supply roll 6a or 6b in the present example contains two film layers, which are either present separately or formed by folding a film web. Also, for example, a film layer for the production of bottom pleated bags already incorporated and connected, for example, by selective adhesive welds with the other film webs. But it is also possible to provide each layer of film on a separate supply roll.

Eine wie durch die Pfeilgruppe 11 angedeutet in alle Richtungen bewegbare Positioniervorrichtung 10 hat die Aufgabe, die durch die Schneidvorrichtung 9a bzw. 9b abgetrennten Folienabschnitte 4 zu ergreifen und exakt auf den Fixiereinrichtungen 3 zu positionieren. Zum Ergreifen der Folienabschnitte 4 kann die Positioniervorrichtung mit Vakuumgreifern ausgestattet sein. Die exakte Positionierung geschieht vorzugsweise mit Hilfe von Markierungen, die auf der Folienbahn 7a bzw. 7b aufgedruckt oder eingeprägt sind, wobei etwaige durch Strecken oder Schrumpfen der Folienbahn entstandene Ungenauigkeiten ausgeglichen werden können, indem die Folienabschnitte 4 entsprechend auf die Fixiereinrichtungen 3 aufgesetzt werden. Dies ist ein wesentlicher Vorteil gegenüber der herkömmlichen Produktionsart an einer Bahn, bei der sich Ungenauigkeiten summieren können.A positioning device 10 which can be moved in all directions, as indicated by the arrow group 11, has the task of gripping the film sections 4 separated by the cutting device 9a or 9b and positioning them exactly on the fixing devices 3. For gripping the film sections 4, the positioning device can be equipped with vacuum grippers. The exact positioning is preferably carried out with the aid of markings which are printed or embossed on the film web 7a or 7b, whereby any inaccuracies caused by stretching or shrinking of the film web can be compensated for by placing the film sections 4 correspondingly on the fixing devices 3. This is a significant advantage over the conventional type of production on a web, where inaccuracies can add up.

Die Fixiereinrichtungen 3 sind im vorliegenden Beispiel als Nadelgruppen ausgebildet, welche die Folienabschnitte 4 durchdringen. Nicht dargestellte Niederhalter sorgen dafür, dass sich die Folienabschnitte 4 während des Transports nicht von den Nadelgruppen lösen. In einer anderen Ausführungsart können die Fixiereinrichtungen 3 Bereiche enthalten, die sich in die Folienabschnitte 4 einprägen. Diese Bereiche können beispielsweise durch kegel- oder pyramidenförmige Erhebungen gebildet sein, wobei die Niederhalter passende Vertiefungen aufweisen, in welche die genannten Erhebungen die betreffenden Bereiche der Folienabschnitte 4 drängen. Im dargestellten Beispiel sind die Fixiereinrichtungen 3 an den parallelen Kettenförderern 2 angeordnet, derart, dass durch sie, in Transportrichtung 5 gesehen, zwei parallele Seitenränder der Folienabschnitte 4 fixiert werden. Es ist aber auch denkbar, den bzw. die Kettenförderer 2 mit in einem Winkel abragenden Armen mit Fixiereinrichtungen auszustatten, die jeweils einen quer zur Transportrichtung 5 orientierten Rand der Folienabschnitte 4 fixieren.The fixing devices 3 are formed in the present example as needle groups which penetrate the film sections 4. Hold-down devices, not shown, ensure that the film sections 4 do not detach from the needle groups during transport. In another embodiment, the fixing means 3 may include areas which are impressed in the film sections 4. These areas can be formed, for example, by conical or pyramidal elevations, wherein the hold-downs have suitable depressions into which the elevations mentioned urge the relevant areas of the film sections 4. In the illustrated example, the fixing devices 3 are arranged on the parallel chain conveyors 2, such that two parallel side edges of the film sections 4 are fixed through them, as seen in the transport direction 5. However, it is also conceivable to equip the chain conveyor or conveyors 2 with arms projecting at an angle with fixing devices which respectively fix a border of the film sections 4 oriented transversely to the transport direction 5.

Mit der Bezugszahl 12 ist eine Schweiss-Station bezeichnet, die ein Oberwerkzeug 13 und ein Unterwerkzeug 14 umfasst, die jeweils mindestens vertikal beweglich sind, wie durch die Doppelpfeile 15 und 16 angedeutet. Die Darstellung der Vorrichtung ist der besseren Übersichtlichkeit halber rechts neben der Schweiss-Station 12 abgebrochen. Die Vorrichtung kann weitere Arbeitsstationen enthalten, die beispielsweise als weitere Schweiss-Station, Kühl-Station, Schneid-Station, Bestückungs-Station, beispielsweise für Einschweissteile, Prüf-Station oder Entnahme-Station für fertige Verpackungsbeutel wie auch für in den Fixiereinrichtungen 3 verbliebene Randabschnitte ausgebildet sein können.Reference numeral 12 designates a welding station comprising an upper tool 13 and a lower tool 14, each being at least vertically movable, as indicated by the double arrows 15 and 16. The representation of the device is the sake of clarity, aborted right next to the welding station 12. The device may include other workstations, for example, as another welding station, cooling station, cutting station, assembly station, for example, for Einschweissteile, inspection station or removal station for finished packaging bag as well as remaining in the fixing devices 3 edge portions can be trained.

Dadurch, dass erfindungsgemäss Folienabschnitte werden, stehen verglichen mit den bekannten Herstellungsmethoden am Band, prinzipiell zwei weitere Ränder zur Verfügung, die ohne Aufhebung des Formschlusses vor dem Heraustrennen der Verpackungserzeugnisse bearbeitbar sind, beispielsweise indem Einschweissteile wie Ausgusstüllen angebracht werden. Bezugszeichenliste 1 Transportvorrichtung 25 2 Kettenförderer 26 3 Fixiereinrichtung 27 4 Folienabschnitt 28 5 Transportrichtung 29 6a Vorratsrolle 30 6b Vorratsrolle 31 7a Folienbahn 32 7b Folienbahn 33 8a Walzenpaar 34 8b Walzenpaar 35 9a Schneidvorrichtung 36 9b Schneidvorrichtung 37 10 Positioniervorrichtung 38 11 Pfeile 39 12 Schweiss-Station 40 13 Oberwerkzeug 14 Unterwerkzeug 15 Doppelpfeil 16 Doppelpfeil 17 18 19 20 21 22 23 24 Due to the fact that film sections according to the invention become available compared to the known production methods on the belt, in principle two further edges are available which can be processed without removing the positive connection prior to separating out the packaging products, for example by attaching welding parts such as spout nozzles. <B> LIST OF REFERENCES </ b> 1 transport device 25 2 chain conveyors 26 3 fixing 27 4 film section 28 5 transport direction 29 6a supply roll 30 6b supply roll 31 7a sheet 32 7b sheet 33 8a roller pair 34 8b roller pair 35 9a cutter 36 9b cutter 37 10 positioning 38 11 arrows 39 12 Welding station 40 13 upper tool 14 lower tool 15 double arrow 16 double arrow 17 18 19 20 21 22 23 24

Claims (15)

Verfahren zur Herstellung flexibler Verpackungserzeugnisse, insbesondere Verpackungsbeutel, wobei die Verpackungserzeugnisse durch Verschweissen zweier Folienlagen gebildet werden, dadurch gekennzeichnet, dass durch Folienlagen gebildete Folienabschnitte (4) von einer Folienbahn (7a; 7b) abgetrennt und einer Transportvorrichtung (1) übergeben und dort an mindestens einem Rand mit einer Fixiereinrichtung (3) formschlüssig fixiert werden, dass die Folienabschnitte (4) mittels der Transportvorrichtung (1) in einer Transportrichtung (5) unter Aufrechterhaltung des Formschlusses zu mindestens einer Schweiss-Station (12) transportiert werden, die Folienlagen dort miteinander verschweisst werden und die Folienabschnitte (4) anschliessend unter Aufrechterhaltung des Formschlusses weiter transportiert werden.Method for producing flexible packaging products, in particular packaging bags, wherein the packaging products are formed by welding two film layers, characterized in that film sections (4) formed by film layers are separated from a film web (7a, 7b) and transferred to a transport device (1) and there at least an edge with a fixing device (3) are positively fixed, that the film sections (4) by means of the transport device (1) in a transport direction (5) while maintaining the positive connection to at least one welding station (12) are transported, the film layers there together be welded and the film sections (4) are then transported while maintaining the positive connection on. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der mindestens eine Rand ein in Transportrichtung (5) verlaufender Rand ist.A method according to claim 1, characterized in that the at least one edge is in the transport direction (5) extending edge. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der mindestens eine Rand ein in einem Winkel zur Transportrichtung (5) verlaufender Rand ist.A method according to claim 1, characterized in that the at least one edge is at an angle to the transport direction (5) extending edge. Verfahren nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Folienabschnitte (4) an zwei gegenüberliegenden Rändern fixiert werden.Method according to one of the preceding claims, characterized in that the film sections (4) are fixed on two opposite edges. Vorrichtung zur Herstellung flexibler Verpackungserzeugnisse, insbesondere Verpackungsbeutel, wobei die Verpackungserzeugnisse durch Verschweissen zweier Folienlagen gebildet werden, dadurch gekennzeichnet, dass die Vorrichtung (1) eine Schneidvorrichtung (9a;9b) zum Abtrennen von durch Folienlagen gebildeten Folienabschnitten (4) von einer Folienbahn (7a; 7b) und eine Positioniervorrichtung (10) zum Übergeben der Folienabschnitte (4) an eine mit Fixiereinrichtungen (3) ausgestattete Transportvorrichtung (1) aufweist, wobei die Fixiereinrichtungen (3) mit der Transportvorrichtung bewegbar und zum formschlüssigen Fixieren der Folienabschnitte (4) ausgebildet sind und dass die Vorrichtung mindestens eine Schweiss-Station (12) zum Verschweissen der Folienlagen aufweist.Device for the production of flexible packaging products, in particular packaging bag, the package products are formed by welding two foil layers, characterized in that the device (1) a cutting device (9a; 9b) for separating formed by layers of film sheet portions (4) of a film web (7a 7b) and a positioning device (10) for transferring the film sections (4) to a transport device (1) equipped with fixing devices (3), wherein the fixing devices (3) are movable with the transport device and designed for the positive fixing of the film sections (4) and that the device has at least one welding station (12) for welding the foil layers. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die Vorrichtung mindestens eine weitere Schweiss-Station enthält.Apparatus according to claim 5, characterized in that the device contains at least one further welding station. Vorrichtung nach einem der Ansprüche 5 bis 6, dadurch gekennzeichnet, dass die Vorrichtung mindestens eine Kühl-Station enthält.Device according to one of claims 5 to 6, characterized in that the device includes at least one cooling station. Vorrichtung nach einem der Ansprüche 5 bis 7, dadurch gekennzeichnet, dass die Vorrichtung mindestens eine Schneid-Station zum Beschneiden der Folienabschnitte (4) enthält.Device according to one of claims 5 to 7, characterized in that the device comprises at least one cutting station for trimming the film sections (4). Vorrichtung nach einem der Ansprüche 5 bis 8, dadurch gekennzeichnet, dass die Vorrichtung mindestens eine Bestückungs-Station zum Bestücken der Verpackungserzeugnisse mit zusätzlichen Teilen wie beispielsweise Einschweissteilen enthält.Device according to one of claims 5 to 8, characterized in that the device contains at least one loading station for equipping the packaging products with additional parts such as weld-in parts. Vorrichtung nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, dass die Vorrichtung mindestens eine Prüf-Station zum Prüfen der Folienabschnitte und/oder der Verpackungserzeugnisse enthält.Device according to one of claims 5 to 9, characterized in that the device comprises at least one inspection station for testing the film sections and / or the packaging products. Vorrichtung nach einem der Ansprüche 5 bis 10, dadurch gekennzeichnet, dass die Vorrichtung mindestens eine Entnahme-Station zum Entnehmen von korrekten oder fehlerhaften Verpackungserzeugnisse enthält.Device according to one of claims 5 to 10, characterized in that the device comprises at least one removal station for removing correct or defective packaging products. Vorrichtung nach einem der Ansprüche 5 bis 11, dadurch gekennzeichnet, dass die Vorrichtung mindestens eine Entnahme-Station zum Entnehmen von nach dem Ausschneiden der Verpackungserzeugnisse in den Fixiereinrichtungen verbleibenden Randabschnitten der Folienabschnitte (4) enthält.Device according to one of claims 5 to 11, characterized in that the device comprises at least one removal station for removing after cutting out the packaging products in the fixing means remaining edge portions of the film sections (4). Vorrichtung nach einem der Ansprüche 5 bis 12, dadurch gekennzeichnet, dass die Transportvorrichtung (1) mindestens ein umlaufendes Fördermittel (2) aufweist, mit dem die Fixiermittel (3) verbunden sind.Device according to one of claims 5 to 12, characterized in that the transport device (1) has at least one circulating conveying means (2), with which the fixing means (3) are connected. Vorrichtung nach einem der Ansprüche 5 bis 13, dadurch gekennzeichnet, dass die Fixiermittel so ausgebildet sind, dass sie sich in die Folienabschnitte einprägen.Device according to one of claims 5 to 13, characterized in that the fixing means are formed so that they impress themselves in the film sections. Vorrichtung nach einem der Ansprüche 5 bis 13, dadurch gekennzeichnet, dass die Fixiermittel so ausgebildet sind, dass sie die Folienabschnitte durchdringen.Device according to one of claims 5 to 13, characterized in that the fixing means are formed such that they penetrate the film sections.
EP14176376.3A 2014-07-09 2014-07-09 Method and device for producing flexible packaging products, in particular packaging bags Withdrawn EP2965900A1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP14176376.3A EP2965900A1 (en) 2014-07-09 2014-07-09 Method and device for producing flexible packaging products, in particular packaging bags
JP2017500842A JP2017528338A (en) 2014-07-09 2015-07-07 Method and device for producing flexible packaging products, more specifically packaging bags
CN201580037509.6A CN106536387B (en) 2014-07-09 2015-07-07 For production flexibility packaging product, the method and apparatus of more particularly packaging bag
PT157343914T PT3172044T (en) 2014-07-09 2015-07-07 Method and device for producing flexible packaging products, more particularly packaging bags
EP15734391.4A EP3172044B1 (en) 2014-07-09 2015-07-07 Method and device for producing flexible packaging products, more particularly packaging bags
PCT/EP2015/065452 WO2016005375A1 (en) 2014-07-09 2015-07-07 Method and device for producing flexible packaging products, more particularly packaging bags
ES15734391.4T ES2680473T3 (en) 2014-07-09 2015-07-07 Method and device for producing flexible packaging products, more particularly packaging bags
US15/324,238 US20170157881A1 (en) 2014-07-09 2015-07-07 Method and device for producing flexible packaging products, more particularly packaging bags
TR2018/11312T TR201811312T4 (en) 2014-07-09 2015-07-07 Method and apparatus for producing flexible packaging products, in particular packaging bags.

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JP2017528338A (en) 2017-09-28
EP3172044B1 (en) 2018-06-06
CN106536387B (en) 2018-06-26
EP3172044A1 (en) 2017-05-31
ES2680473T3 (en) 2018-09-07
CN106536387A (en) 2017-03-22
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WO2016005375A1 (en) 2016-01-14
PT3172044T (en) 2018-08-03

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