EP3708506A1 - Machine d'emballage pour produire des emballages scellés - Google Patents

Machine d'emballage pour produire des emballages scellés Download PDF

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Publication number
EP3708506A1
EP3708506A1 EP20160690.2A EP20160690A EP3708506A1 EP 3708506 A1 EP3708506 A1 EP 3708506A1 EP 20160690 A EP20160690 A EP 20160690A EP 3708506 A1 EP3708506 A1 EP 3708506A1
Authority
EP
European Patent Office
Prior art keywords
packs
tube
finalized
isolation
packaging machine
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.)
Pending
Application number
EP20160690.2A
Other languages
German (de)
English (en)
Inventor
Filippo Ferrarini
Marco Carreri
Stefano Boccolari
Claudio RONCAGLIA
Claudio Ferrari
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 EP3708506A1 publication Critical patent/EP3708506A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • B65B55/02—Sterilising, e.g. of complete packages
    • B65B55/025—Packaging in aseptic tunnels
    • 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
    • B65B55/02—Sterilising, e.g. of complete packages
    • B65B55/027—Packaging in aseptic chambers
    • 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

Definitions

  • liquid or pourable food products such as fruit juice, UHT (ultra-high-temperature treated) milk, wine, tomato sauce, etc.
  • UHT ultra-high-temperature treated milk
  • wine tomato sauce
  • etc. are sold in packages made of sterilized packaging material.
  • Packages of this sort are normally produced on fully automatic packaging machines.
  • packaging machines which advance a web of packaging material through a sterilization apparatus for sterilizing the web of packaging material at a sterilization station and into an isolation chamber in which the sterilized web of packaging material is maintained and advanced.
  • the web of packaging material is folded and sealed longitudinally at a tube forming station to form a tube having a longitudinal seam portion, the tube being further fed along an advancing (vertical) direction.
  • Pillow packages are so obtained within the packaging machine, each pillow package having a longitudinal sealing band, a top transversal sealing band and a bottom transversal sealing band.
  • a typical packaging machine of this type comprises:
  • the known packaging machines function satisfying well, however, a desire is felt to further improve the known packaging machines.
  • the desire is felt to further improve the cleanliness and sterility and/or to facilitate the cleaning and/or sterilization of these packaging machines.
  • Number 1 indicates as a whole a packaging machine for producing sealed packages 2 of a pourable product, in particular a pourable food product such as pasteurized milk, fruit juice, wine, tomato sauce, etc.
  • packages 2 are produced from a tube 3 of a web 4 of packaging material.
  • Web 4 of packaging material has a multilayer structure (not shown), and comprises at least a layer of fibrous material, such as e.g. a paper or cardboard layer, and at least two layers of heat-seal plastic material, e.g. polyethylene, interposing the layer of fibrous material in between one another.
  • a layer of fibrous material such as e.g. a paper or cardboard layer
  • heat-seal plastic material e.g. polyethylene
  • web 4 also comprises a layer of gas- and light-barrier material, e.g. aluminum foil or ethylene vinyl alcohol (EVOH) film, in particular being arranged between one of the layers of the heat-seal plastic material and the layer of fibrous material.
  • a layer of gas- and light-barrier material e.g. aluminum foil or ethylene vinyl alcohol (EVOH) film
  • EVOH ethylene vinyl alcohol
  • web 4 also comprises a further layer of heat-seal plastic material being interposed between the layer of gas- and light-barrier material and the layer of fibrous material.
  • a typical package 2 extends along a longitudinal axis A and has a longitudinal seam portion 5 (extending along axis A and only partially shown) and a pair of transversal sealing bands 6, in particular a transversal top sealing band and a transversal bottom sealing band.
  • package 2 has a substantially parallelepiped structure.
  • each package 2 comprises at least two transversal walls 7 (being transversal to longitudinal axis A) and being disposed at opposite sides of package 2 and a plurality of lateral walls 8 extending between transversal walls 7.
  • one transversal wall 7 defines a bottom wall and the other transversal wall 7 defines a top wall of the respective package 2.
  • the bottom wall has a support surface adapted to be placed on a (horizontal) plane, such as e.g. a shelf within a distribution point, and the top wall is opposed to the bottom wall.
  • packaging machine 1 is configured to produce sealed semi-finalized packs 9, such as e.g. pillow packs, being filled with the pourable product and to further treat and/or manipulate and/or form packs 9 for obtaining packages 2.
  • sealed semi-finalized packs 9 such as e.g. pillow packs
  • first packs 9 are produced, followed by the formation of packages 2 from packs 9.
  • each pack 9 comprises at least a central main portion 10 and a plurality of flaps 11 protruding from central main portion 10.
  • each longitudinal sealing band 12 and the respective transversal sealing bands 13 define respectively the corresponding longitudinal seam portion 5 and the corresponding transversal sealing bands 6 of the respective package 2 (obtained from the respective pack 9).
  • end portions 14 of each pack 9 taper from the respective central main portion 10 to the respective transversal sealing band 13.
  • each end portion 14 carries at least two flaps 11, in particular at opposite lateral edges thereof.
  • packaging machine 1 is configured to manipulate and/or form and/or process packs 9 such that flaps 11 are folded and sealed onto at least one of lateral walls 8 and/or onto one of transversal walls 7 of the respective package 2.
  • flaps 11 are sealed onto two corresponding lateral walls 8 and two flaps 11 are sealed onto one transversal wall 7 of the respective package 2 (see e.g. Figure 2 ).
  • packaging machine 1 comprises at least:
  • packaging machine 1 also comprises a conveying device 24 configured to advance web 4 along a web advancement path P at least to a tube forming station 23 at which web 4 is formed, in use, into tube 3 and for advancing tube 3 along a tube advancement path Q.
  • isolation housing 18 comprises at least a first isolation chamber 25 having a first inner environment 26 and a second isolation chamber 27 having a second inner environment 28.
  • second isolation chamber 27 and second inner environment 28 are arranged downstream of respectively first isolation chamber 25 and first inner environment 26 along tube advancement path Q.
  • tube 3 passes from first inner environment 26 into second inner environment 28.
  • packaging machine 1 further comprises a safety chamber 29 distinct from isolation housing 18, in particular from first isolation chamber 25 and second isolation chamber 27, and housing at least a portion of final folding unit 22 such that final folding unit 22 treats and/or manipulates, in use, packs 9 within safety chamber 29 for obtaining packages 2.
  • safety chamber 29 is transversally spaced apart from isolation housing 18, in particular from second isolation chamber 27.
  • safety chamber 29 is detached from isolation housing 18, in particular from first isolation chamber 25 and second isolation chamber 27; i.e. there is no direct mechanical contact between safety chamber 29 and isolation housing 18.
  • safety chamber 29 is in contact with at least second isolation chamber 27.
  • packaging machine 1 further comprises a connecting channel 30 interposed between isolation housing 18, in particular second isolation chamber 27, and safety chamber 29.
  • connecting channel 30 houses at least an (intermediate) portion of outlet conveying unit 20 for advancing, in use, packs 9 between isolation housing 18, in particular second isolation chamber 27, and safety chamber 29 within connecting channel 30.
  • connecting channel 30 encloses an advancement space 31 within which packs 9 advance, in use, between isolation housing 18, in particular second isolation chamber 27, and final folding unit 22 and/or safety chamber 29.
  • formation apparatus 19 is configured to form web 4 into tube 3 and to longitudinally seal tube 3, to fill tube 3 with the pourable product and to form, transversally seal and, in particular to also transversally cut tube 3, for obtaining and/or producing packs 9.
  • formation apparatus 19 comprises at least:
  • package forming unit 34 is arranged downstream of first isolation chamber 25 and tube forming and sealing device 32 along path Q.
  • tube 3 extends along a longitudinal axis, in particular having a vertical orientation.
  • packaging machine 1 further comprises a sterilization apparatus for sterilizing at least a portion of web 4 at a sterilization station arranged upstream of tube forming station 23 along web advancement path P.
  • the sterilization apparatus is configured to sterilize web 4 by means of physical sterilization such as a sterilization irradiation, in particular an electromagnetic irradiation, even more particular electron beam irradiation.
  • physical sterilization such as a sterilization irradiation, in particular an electromagnetic irradiation, even more particular electron beam irradiation.
  • the sterilization apparatus could be configured to sterilize web 4 by means of chemical sterilization, in particular by means of hydrogen peroxide.
  • packaging machine 1 also comprises a magazine unit adapted to host and to provide for web 4 at a host station.
  • conveying device 24 is configured to advance web 4 from the host station to tube forming station 23 and, in particular through the sterilization station.
  • conveying device 24 is adapted to advance tube 3 and any intermediate of tube 3 in a manner known as such along path Q, in particular from tube forming station 23 through first inner environment 26 and towards and at least partially through second inner environment 28.
  • any configuration of web 4 is meant prior to obtaining the tube structure and after folding of web 4 by tube forming and sealing device 32 has started.
  • the intermediates of tube 3 are a result of the gradual folding of web 4 so as to obtain tube 3, in particular by overlapping opposite lateral edges of web 4 with one another.
  • first isolation chamber 25 separates first inner environment 26 from an outer environment, in particular for allowing to form and to fill tube 3 within a controlled atmosphere.
  • first inner environment 26 contains a sterile gas.
  • packaging machine 1 also comprises an atmosphere control unit configured to control a gas atmosphere within at least a portion of isolation housing 18, in particular first isolation chamber 25.
  • the atmosphere control unit is configured to control a positive pressure within inner environment 24 being larger than the ambient pressure, and in particular to also introduce a sterile gas into at least inner environment 24.
  • filling device 33 comprises at least a filling pipe 35 being in fluid connection or being controllable to be in fluid connection with a pourable product storage tank (not shown and known as such) and partially extending within first isolation chamber 25, in particular first inner environment 26.
  • filling pipe 35 is partially placed within tube 3 for feeding the pourable product into the, in use, advancing tube 3.
  • tube forming and sealing device 32 comprises at least a tube forming assembly configured to form tube 3 from web 4, in particular by overlapping the respective lateral edges of web 4, and at least a sealing head 37 configured to longitudinally seal tube 3, in particular along the portion of tube 3 obtained by the overlapping of the lateral edges of web 4.
  • the tube forming assembly and sealing head 37 are arranged within first isolation chamber 25, in particular within first inner environment 26.
  • the tube forming assembly comprises at least a plurality of forming ring assemblies 38, in the particular example shown two, being adapted to fold web 4 gradually into tube 3.
  • forming ring assemblies 38 are arranged within parallel and spaced apart planes, in particular being orthogonal to a longitudinal axis of first isolation chamber 25, even more specifically having a substantially horizontal orientation.
  • tube forming and sealing device 32 also comprises a pressuring assembly configured to exert a mechanical force on tube 3, in particular for promoting the longitudinal sealing of tube 3.
  • the pressuring assembly is associated to the forming ring assembly 38 being arranged downstream of the other forming ring assembly 38 along web advancement path P and/or tube advancement path Q.
  • package forming unit 34 comprises a plurality of pairs of at least one respective operative assembly (not shown and known as such) and at least one counter-operative assembly (not shown and known as such); and
  • each operative assembly is adapted to cooperate, in use, with the respective counter-operative assembly of the respective pair for forming, transversally sealing and transversally cutting tube 3 for obtaining one respective pack 9, in particular when, in use, advancing along a respective operative portion of the respective conveying path.
  • each operative assembly and each counter-operative assembly comprises:
  • first transversal delimiting wall 39 separates first inner environment 26 from second inner environment 28.
  • first isolation chamber 25 and/or second isolation chamber 27 comprise(s) sealing means for sealing, in use, in collaboration with tube 3, the outlet opening for substantially limiting and/or impeding any gas exchange between second inner environment 28 and first inner environment 26.
  • isolation housing 18, in particular second isolation chamber 27 comprises an outlet aperture 42 configured to allow for the outlet of packs 9 from isolation housing 18, in particular from second isolation chamber 27 and/or second inner environment 28.
  • outlet conveying unit 20 extends through outlet aperture 42 and is configured to advance packs 9 out of second isolation chamber 27 through the outlet aperture 42.
  • one of lateral walls 41 comprises outlet aperture 42.
  • outlet conveying unit 20 is configured to advance packs 9 along an advancement path R from a receiving station 43, at which outlet conveying unit 20 receives, in use, packs 9, to transfer station 21.
  • outlet conveying unit 20 comprises at least one belt conveyor being at least partially arranged within second inner environment 28.
  • outlet conveying unit 20 could also comprise conveyors of another type.
  • outlet conveying unit 20 could comprise a plurality of belt conveyors being arranged in succession of one another and extending at least between receiving station 43 and transfer station 21.
  • final folding unit 22 is configured to manipulate and/or process packs 9 such so as to form and/or shape at least the respective central main portions 10 (into the desired form and/or shape of the respective package 2) and to control and/or determine the relative position of flaps 11 with respect to the respective central main body 10.
  • final folding unit 22 is configured to seal each flap 11 onto the respective central main body 10 such that each flap 11 is sealed to one of transversal walls 7 and/or lateral walls 8 of the respective package 2.
  • final folding unit 22 comprises at least:
  • the conveying assembly comprises a plurality of retaining pockets configured to retain at least one respective pack 9 during advancement of packs 2 along the final advancement path.
  • final folding unit 22 comprises a plurality of treatment units each one being associated to one respective retaining pocket and/or being arranged along the final advancement path.
  • packaging machine 1 forms packages 2 filled with the pourable product.
  • the method of forming packages 2 comprises the main steps of:
  • the method also comprises the main step of transferring packs 9 to outlet conveying unit 20, in particular at receiving station 43.
  • the method also comprises the main step of transferring packs 9 to final folding unit 22 at transfer station.
  • the main step of final folding is executed after the main step of forming packs 9.
  • the main step of forming packs 9 comprises at least the steps of:
  • the main step of forming also comprises the step of sterilizing web 4 at the sterilization station.
  • conveying device 24 advances web 4 along web advancement path P and, in particular from the host station to at least tube forming station 23.
  • tube forming and sealing device 32 gradually overlaps the opposite lateral edges of web 4 with one another so as to form the longitudinal seal.
  • tube forming and sealing device 32 seals the longitudinal seal by directing heat onto the longitudinal seal, in particular by sealing head 37 transferring thermal energy onto the longitudinal seal.
  • conveying device 24 advances tube 3 (and any intermediates of tube 3), in particular through first isolation chamber 25, along path Q into and partially through second isolation chamber 27.
  • filling device 33 fills the pourable product into the longitudinally sealed tube 3.
  • the pourable product is directed into tube 3 through filling pipe 35.
  • a sterilizing irradiation in particular electromagnetic irradiation, even more particular electron beam irradiation, is directed onto at least the first face, preferentially also onto the second face, of web 4.
  • the step of sterilizing is executed prior to the step of folding.
  • package forming unit 34 forms, transversally seals and transversally cuts tube 3, in particular between successive packs 9.
  • the respective central main portions 10 are formed and/or the respective flaps 11 are folded and sealed onto the respective central main portions 10.
  • the main step of final folding packs 9 comprises the steps of conveying packs 9 along the final advancement path (by means of the conveying assembly) and to treat packs 9 during advancement along the final advancement path for obtaining packages 2.
  • the at least one treatment unit forms and/or shapes the respective central main portions 10 and/or folds and seals the respective flaps 11 onto the respective central main portions 10.
  • final folding unit 22 outside of isolation housing 18, in particular outside of second inner environment 28, the overall cleaning and/or sterilization process, as e.g. done during a cleaning-in-place and/or sterilization-in-place process, of packaging machine 1 is facilitated.
  • This is e.g. possible as the dimension of second isolation chamber 27 can be reduced with respect to the state-of-the-art packaging machines and as the cleaning and/or sterilization process does not require a cleaning and/or sterilization of final folding unit 22 as currently required.
  • Another advantage is seen in the possibility of cleaning second isolation chamber 27 and/or package forming unit 34 independently from safety chamber 29 and/or final folding unit 22. Furthermore, this also allows to apply different cleaning frequencies for the cleaning of second isolation chamber 27 and/or package forming unit 34 and the cleaning of safety chamber 29 and/or final folding unit 22.
  • a further advantage resides in the possibility of facilitating the construction of final folding unit 22 as it is not required to optimize final folding unit 22 for cleaning and/or sterilization purposes.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
EP20160690.2A 2019-03-14 2020-03-03 Machine d'emballage pour produire des emballages scellés Pending EP3708506A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19162708 2019-03-14

Publications (1)

Publication Number Publication Date
EP3708506A1 true EP3708506A1 (fr) 2020-09-16

Family

ID=65812131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20160690.2A Pending EP3708506A1 (fr) 2019-03-14 2020-03-03 Machine d'emballage pour produire des emballages scellés

Country Status (5)

Country Link
US (1) US20220177173A1 (fr)
EP (1) EP3708506A1 (fr)
JP (1) JP2022525158A (fr)
CN (1) CN113474256A (fr)
WO (1) WO2020182542A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114537773A (zh) * 2022-04-07 2022-05-27 广州西利实业有限公司 一种全自动高稳定性的三角袋包装机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023198615A1 (fr) * 2022-04-13 2023-10-19 Tetra Laval Holdings & Finance S.A. Transporteur d'alimentation pour un appareil de pliage, appareil de pliage ayant un transporteur d'alimentation, et machine d'emballage ayant un appareil de pliage
WO2024027992A1 (fr) * 2022-08-02 2024-02-08 Tetra Laval Holdings & Finance S.A. Ébauche d'emballage permettant de former un emballage et emballage formé à partir d'une ébauche d'emballage
CN117735005B (zh) * 2024-02-01 2024-04-19 苏州盛曼特新材料有限公司 物料收集包装机、电子玻璃生产用氧化铝粉末的包装方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1220959A (en) * 1967-08-07 1971-01-27 Seres Soc D Etudes Et De Reali Sterile chamber for packaging various products
GB1513266A (en) * 1974-11-19 1978-06-07 Alpura Koreco Ag Process and apparatus for sterilising an enclosure of a machine
GB1531332A (en) * 1975-01-24 1978-11-08 Belgique Papeteries Apparatus for packaging sterile liquid products
EP0887261A1 (fr) 1997-06-27 1998-12-30 Tetra Laval Holdings & Finance SA Unité de pliage à grande vitesse pour machine d'emballage
WO2008122623A2 (fr) 2007-04-05 2008-10-16 Tetra Laval Holdings & Finance S.A. Unité pliable de production d'emballages scellés de produits alimentaires liquides
EP2586719A1 (fr) 2011-10-31 2013-05-01 Tetra Laval Holdings & Finance S.A. Unité de pliage et procédé de production de paquets de produits alimentaires pouvant être versés
EP3081497A1 (fr) * 2015-04-14 2016-10-19 Tetra Laval Holdings & Finance SA Machine d'emballage et procédé de production d'emballages à partir d'un matériau d'emballage

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JPH1029611A (ja) * 1996-07-15 1998-02-03 Shikoku Kakoki Co Ltd 包装機械における駆動装置
JPH1029608A (ja) * 1996-07-15 1998-02-03 Shikoku Kakoki Co Ltd 包装機械
JP4071321B2 (ja) * 1997-08-13 2008-04-02 日本テトラパック株式会社 包材処理装置
JP3936212B2 (ja) * 2002-03-19 2007-06-27 大日本印刷株式会社 自動充填包装装置
EP1790572B1 (fr) * 2005-11-29 2009-07-08 Tetra Laval Holdings & Finance SA Unité de stérilisation de matériau d' emballage pour une machine d'emballage de produit alimentaire coulant
MX2011001920A (es) * 2008-08-24 2011-03-30 Tetra Laval Holdings & Finance Maquina de envasado y llenado.
PL2955117T3 (pl) * 2014-06-10 2017-09-29 Tetra Laval Holdings & Finance S.A. Zespół podający do podawania szczelnie zamkniętych paczek z nalewanymi produktami spożywczymi
CN109383862B (zh) * 2017-08-04 2021-07-13 利乐拉瓦尔集团及财务有限公司 用于横向密封包装材料管的砧座和具有砧座的密封钳
DE102018206356A1 (de) * 2018-02-19 2019-10-17 Windmöller & Hölscher Kg Fülleinrichtung und Verfahren zum Befüllen von Säcken mit jeweils einem unverschlossenen oberen Ende

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1220959A (en) * 1967-08-07 1971-01-27 Seres Soc D Etudes Et De Reali Sterile chamber for packaging various products
GB1513266A (en) * 1974-11-19 1978-06-07 Alpura Koreco Ag Process and apparatus for sterilising an enclosure of a machine
GB1531332A (en) * 1975-01-24 1978-11-08 Belgique Papeteries Apparatus for packaging sterile liquid products
EP0887261A1 (fr) 1997-06-27 1998-12-30 Tetra Laval Holdings & Finance SA Unité de pliage à grande vitesse pour machine d'emballage
WO2008122623A2 (fr) 2007-04-05 2008-10-16 Tetra Laval Holdings & Finance S.A. Unité pliable de production d'emballages scellés de produits alimentaires liquides
EP2586719A1 (fr) 2011-10-31 2013-05-01 Tetra Laval Holdings & Finance S.A. Unité de pliage et procédé de production de paquets de produits alimentaires pouvant être versés
EP3081497A1 (fr) * 2015-04-14 2016-10-19 Tetra Laval Holdings & Finance SA Machine d'emballage et procédé de production d'emballages à partir d'un matériau d'emballage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114537773A (zh) * 2022-04-07 2022-05-27 广州西利实业有限公司 一种全自动高稳定性的三角袋包装机

Also Published As

Publication number Publication date
JP2022525158A (ja) 2022-05-11
CN113474256A (zh) 2021-10-01
WO2020182542A1 (fr) 2020-09-17
US20220177173A1 (en) 2022-06-09

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