US20200094308A1 - Method and device for manufacturing peel-off lids as well as a peel-off lid - Google Patents

Method and device for manufacturing peel-off lids as well as a peel-off lid Download PDF

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Publication number
US20200094308A1
US20200094308A1 US16/605,820 US201816605820A US2020094308A1 US 20200094308 A1 US20200094308 A1 US 20200094308A1 US 201816605820 A US201816605820 A US 201816605820A US 2020094308 A1 US2020094308 A1 US 2020094308A1
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US
United States
Prior art keywords
sealing
peel
lid
rolled
section
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.)
Abandoned
Application number
US16/605,820
Other languages
English (en)
Inventor
Peter Taiana
Marcel Oberholzer
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.)
Soudronic AG
Original Assignee
Soudronic 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 Soudronic AG filed Critical Soudronic AG
Assigned to SOUDRONIC AG reassignment SOUDRONIC AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OBERHOLZER, MARCEL, TAIANA, PETER
Publication of US20200094308A1 publication Critical patent/US20200094308A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B21D51/443—Making closures, e.g. caps easily removable closures, e.g. by means of tear strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling tabs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B21D51/46—Placing sealings or sealing 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/2878—Securing closures on containers by heat-sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/50—Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/501—Flexible tape or foil-like material
    • B65D17/502—Flexible tape or foil-like material applied to the external part of the container wall only
    • 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
    • B65B7/00—Closing containers or receptacles after filling
    • B65B7/16—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28—Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • B65B7/2842—Securing closures on containers
    • B65B7/285—Securing closures on containers by deformation of the closure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/001—Action for opening container
    • B65D2517/0013—Action for opening container pull-out tear panel, e.g. by means of a tear-tab
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/50—Non-integral frangible members applied to, or inserted in, a preformed opening
    • B65D2517/5002—Details of flexible tape or foil-like material
    • B65D2517/5008—Details of flexible tape or foil-like material with a sealing coat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S72/00—Metal deforming
    • Y10S72/715—Method of making can bodies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the invention relates to a method for manufacturing peel-off lids, a device for manufacturing peel-off lids, and a peel-off lid having a peel-off foil sealing and extraction opening.
  • Peel-off lids are known, e.g. from DE-U 298 17 592 or from DE-U 92 03 953. If the container closed by the peel-off lid contains a liquid, corrosive filling content, e.g. saltwater, the bare cutting edge of the lid opening may corrode. In case of a peel-off lid with a so-called retort-curl a certain protection against the influence of the filling content is reached by rolling in the section with the cutting edge towards the top and outward and by covering it with the peel-off foil. Additionally, the bare or potentially corroded cutting edge, respectively, is not visible. However, traces of the corrosion may nevertheless get visible, depending on aggressiveness of the filling content and storage time of the filled container.
  • a liquid, corrosive filling content e.g. saltwater
  • the bare cutting edge of the lid opening may corrode.
  • retort-curl a certain protection against the influence of the filling content is reached by rolling in the section
  • EP-A 1 153 840 proposes to seal the peel-off foil also on the roll itself, with the result that the cutting edge is protected from the can content by a sealing.
  • the sealing is difficult to master perfectly at the sealing flange as well as additionally at the roll during production with high cadence.
  • WO-A 02/79041 mentions parenthetically that the gap created during the rolling-in may be filled with the hot-sealing coating of the peel-off foil without describing how this would actually be feasible during the industrial manufacturing of peel-off lids.
  • Known peel-off foils only have a very thin hot-sealing layer and it is not obvious for the skilled person how this layer can be used for gap filling, if a hot sealing known to the skilled person is carried out.
  • the invention has the objective of creating an improved method by means of which peel-off lids can be manufactured industrially with very high cadence and with low costs, and for which the number of defective lids having an insufficient cutting edge protection is reduced to virtually zero.
  • the rolled-in section comprises at least the actual retort curl, which follows the section of the lid ring forming the sealing surface and comprises particularly the entire section where the strip of plastic material is present.
  • Heating up is understood in such a way that the rolled-in section is brought to a temperature permitting the plastic material to melt, wherein it is not obligatory but preferred that the entire rolled-in section is brought to the same temperature homogenously. Melting the plastic material is not understood in a way that the entire plastic material of the strip must be brought to the melting temperature. It may be sufficient that the material layer of the plastic material, which borders the lid material, melts in order to ensure the adhesion of the plastic material to the lid ring material.
  • a heating means working inductively is used for heating up the rolled-in section. It generates eddy currents in the metal lid material, which cause it to heat up.
  • the heating may act on the entire lid ring. It may be provided that the eddy currents are generated mainly in the rolled-in section due to the arrangement of the inductive heating means and potentially a concentration of the field lines of the inductive heating by means of pole shoes.
  • a very fast heating up of the plastic material to the temperature triggering the melting of the plastic material may be caused by the inductive heating up of the metal material of the lid ring.
  • Inductive heating means have been used for a long time in the industrial environment for heating up materials and they are known to the skilled person and are also commercially available. Alternatively, the heating up may also be done by means of infrared radiation or hot air.
  • plastic material of the strip comprises in the present context that the strip comprises a polymer or a resin, or consists of it, and that the heating up of the rolled-in section at least to the melting temperature of the plastic material of the strip takes place. Particularly, the heating up of the rolled-in section takes place to a temperature in the range of 100° Celsius to 200° Celsius and particularly to a temperature in the range from 140° Celsius to 180° Celsius.
  • the upper side of the lid blank forming the heat-sealable sealing surface for the peel-off foil is a polypropylene-modified varnish system or comprises such, or is a polypropylene-laminated coating or is another polypropylene-containing coating and the underside of the lid blank has a coating made of an inner varnish for cans with polyester or acryl or epoxy or polyvinylchloride.
  • the mentioned material choice of the strip of plastic and the mentioned sections for heating leads to a particularly good connection between the mentioned coatings of the lid blank or of the lid ring, respectively, and the plastic strip.
  • the invention furthermore has the objective to provide a manufacturing device for peel-off lids, by means of which peel-off lids can be manufactured with high cadence and in an inexpensive way, which offer a practically faultless protection of the cutting edge of the peel-off lid against corrosion.
  • the at least one further processing station which is provided after the third processing station in transport direction, which is adapted to heat up at least the rolled-in section of the peel-off lid to at least the melting temperature of the plastic strip
  • an optimum adhesion of the plastic material on the two sides of the lid ring can be attained with the device by heating up the rolled-in section and melting the plastic material of the strip, which two sides both are adjacent to the plastic material of the strip in the rolled-in section.
  • a hermetic tightness of the rolled-in section is reached with respect to the content of the container on which the peel-off lid is applied. In this way the corrosion of the cutting edge can be positively avoided for peel-off lids manufactured by the device according to the invention.
  • the rolled-in section is normally a retort curl following the sections of the lid ring forming the sealing surface.
  • Heating up which is reached by the processing station, is understood in such a way that the rolled-in section is brought to a temperature allowing a melting of the plastic material, wherein it is not necessary but preferred that the entire rolled-in section is brought to the same temperature in a homogenous way. Melting of the plastic material is not understood in such a way that the entire plastic material of the strip has to be brought to the melting temperature. It may be sufficient that the material layer of the plastic material, which is adjacent to the lid material melts in order to ensure adhesion of the plastic material to the lid ring material.
  • the heating up is neither limited to the rolled-in section, it may be that the entire lid ring is heated up, however a heating up is preferred, which substantially is concentrated on the rolled-in section. Arbitrary heat sources can be used for this purpose.
  • an induction heating means is preferably provided as heat source. This allows a particularly fast heating up of the lid ring, and particularly of its rolled-in section, to the desired temperature which is necessary for melting the strip of plastic.
  • the further processing station may be provided at an arbitrary position along the transport path of the device between the processing stations manufacturing the rolled-in section and the sealing station. It may be arranged before or after a flipping station of the device. The arrangement before the flipping station is advantageous because in this way the lid rings were cooled down again until the sealing station. For cooling them down, an additional cooling station may potentially serve, which cools the lid rings e.g. with an air stream.
  • the cooling before the sealing station has the advantage that the sealing parameters are not influenced by the previous heating up of the lid ring.
  • the further processing station is integrated into the at least one sealing station and has a heating means contacting the rolled-in section in the sealing tool.
  • the further processing station is preferably integrated in the second sealing station.
  • the further sealing station is particularly adapted to heat up the rolled-in section in the temperature range from 100° Celsius to 200° Celsius and particularly in the range from 140° Celsius to 180° Celsius.
  • the application station is adapted for applying the band-shaped plastic strip in such a way that a strip with a substantially uniform thickness, particularly a thickness in the range from 0.05 mm to 0.5 mm and particularly with a thickness of around 0.1 mm is generated for applying the band-shaped plastic strip.
  • the low thickness of the strip is advantageous for reaching the melting temperature fast.
  • the invention relates to a peel-off lid comprising a circumferential attachment section, a sealing flange with a peel-off foil sealed onto it, and a rolled-in section extending in a circumferential way around the sealing flange, which limits the extraction opening laterally, wherein the rolled-in edge has a sealing made of a plastic, which term means a polymer or a resin, which is connected to the upper side and the underside of the peel-off lid in an adhesive way by melting the plastic in the rolled-in section.
  • a plastic which term means a polymer or a resin
  • FIG. 8 shows the lid ring of FIG. 7 after rolling in the edge of the extraction opening for forming the rolled-in section of the lid ring;
  • FIG. 11 shows a schematic side view of a device according to the invention for manufacturing peel-off lids with sealed cutting edge according to the method of the invention
  • FIG. 13 shows an illustrative view of the vertically cut sealing tool of FIG. 12 .
  • the finished peel-off lid 10 can be attached to a can shell (which is indicated in FIG. 5 only by a wall part 11 ) by means of its folding edge 6 and thereby seals the can. This is done during the filling operation, during which the can has been filled with a filling content.
  • the filled can may be opened later by tearing off the peel-off foil from the lid ring by means of its peel-off latch 18 , such that the extraction opening 15 is open.
  • FIGS. 6 and 7 show a lid ring for which the processing step of drawing the edge of the extraction opening for forming the collar 4 has already been carried out. This was done in the processing station 24 .
  • a curvature to the inside was created at the upper end 34 of the collar 4 , which simplifies the later rolling-in for forming the retort curl.
  • a plastic strip 32 was attached to the inner side 40 of the collar 4 in a work step. The application of this plastic layer is done in a separate processing station 29 arranged between the drawing station 24 and the rolling-in station 25 .
  • the band-shaped strip 32 made of the plastic material forms during rolling in a sealing for the cutting edge 31 , which is shown in the following.
  • the strip 32 consists of a plastic, wherein this term is also intended to encompass a polymer or resin.
  • plastics are commercially available and particularly also available of qualities making them able to reliably withstand the sterilisation temperature during sterilisation of the filled container and consequently don't melt again at sterilisation temperature, such that the sealing formed by the strip is maintained during the sterilisation.
  • the strip is preferably formed with a uniform thickness along the entire height of the band, as shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Closing Of Containers (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
US16/605,820 2017-04-21 2018-01-25 Method and device for manufacturing peel-off lids as well as a peel-off lid Abandoned US20200094308A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH00536/17A CH713744A2 (de) 2017-04-21 2017-04-21 Verfahren und Vorrichtung zur Herstellung von Aufreissdeckeln sowie ein Aufreissdeckel.
CH0536/17 2017-04-21
PCT/CH2018/000004 WO2018191828A1 (de) 2017-04-21 2018-01-25 Verfahren und vorrichtung zur herstellung von aufreissdeckeln sowie ein aufreissdeckel

Publications (1)

Publication Number Publication Date
US20200094308A1 true US20200094308A1 (en) 2020-03-26

Family

ID=61163448

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/605,820 Abandoned US20200094308A1 (en) 2017-04-21 2018-01-25 Method and device for manufacturing peel-off lids as well as a peel-off lid

Country Status (9)

Country Link
US (1) US20200094308A1 (de)
EP (1) EP3554734B1 (de)
JP (1) JP2020517526A (de)
CN (1) CN110366457A (de)
CH (1) CH713744A2 (de)
ES (1) ES2832878T3 (de)
PT (1) PT3554734T (de)
TW (1) TWI754004B (de)
WO (1) WO2018191828A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3965977A1 (de) * 2019-05-09 2022-03-16 Constellium Rolled Products Singen GmbH & Co.KG Verfahren zur herstellung von langen metallischen verschlusskappen mit einer schürze mit konstanter dicke
CH716413A1 (de) 2019-07-18 2021-01-29 Soudronic Ag Verfahren und Vorrichtung zur Herstellung von Aufreissdeckeln sowie Aufreissdeckel.
CH716830A1 (de) * 2019-11-22 2021-05-31 Soudronic Ag Verfahren und Vorrichtungen zur Herstellung von Aufreissdeckeln.

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JPH05138660A (ja) * 1991-11-21 1993-06-08 Anritsu Corp 樹脂の成形方法
DE9203953U1 (de) 1992-03-24 1992-07-23 Alcan Rorschach Ag, Rorschach Verschlußdeckel für Dosen o.dgl. Behälter
CN1054105C (zh) * 1995-02-27 2000-07-05 王炜 防污染易拉罐的制作方法和加工装置
JPH11138228A (ja) * 1997-11-07 1999-05-25 Sako Seisakusho:Kk 金属缶の製造装置
DE29817592U1 (de) 1998-10-02 1998-11-26 Union Deutsche Lebensmittelwerke GmbH, 20355 Hamburg Dose
DE10022553C1 (de) * 2000-05-10 2001-07-05 Rasselstein Hoesch Gmbh Verfahren zum Herstellen eines Ringteils aus Blech für einen Dosendeckel
WO2002079041A1 (es) 2001-03-29 2002-10-10 Industrias Alimentarias De Navarra, S.A. Cierre para latas, en especial de conserva
JP2003170537A (ja) * 2001-12-04 2003-06-17 Three M Innovative Properties Co フランジ部シール材
JP4375704B2 (ja) * 2003-01-27 2009-12-02 大和製罐株式会社 金属缶の開口カール部製造方法
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WO2006017953A1 (de) 2004-08-18 2006-02-23 Soudronic Ag Verfahren und vorrichtung zum fördern von zu bearbeitenden gegenständen
JP5063959B2 (ja) 2006-08-21 2012-10-31 東洋製罐株式会社 金属缶用ホットメルト組成物及びこれを用いて成る金属缶
JP4987532B2 (ja) * 2007-03-28 2012-07-25 藤森工業株式会社 シールフィルムの製造方法およびインナーシール付き容器の製造方法
CN103930222B (zh) * 2012-11-02 2016-04-27 广州市泰雅印铁制罐有限公司 一种用于密封圆筒内壁缝隙的方法和设备
CH709571A1 (de) * 2014-04-29 2015-10-30 Soudronic Ag Verfahren und Vorrichtung zur Herstellung von Aufreissdeckeln sowie ein Aufreissdeckel.

Also Published As

Publication number Publication date
EP3554734B1 (de) 2020-09-23
ES2832878T3 (es) 2021-06-11
TW201841803A (zh) 2018-12-01
CH713744A2 (de) 2018-10-31
PT3554734T (pt) 2020-11-25
TWI754004B (zh) 2022-02-01
CN110366457A (zh) 2019-10-22
JP2020517526A (ja) 2020-06-18
WO2018191828A1 (de) 2018-10-25
EP3554734A1 (de) 2019-10-23

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