EP2208681B1 - Einheit zum Sterilisieren einer Verpackungsmaterialbahn für eine Maschine zum Verpacken von Lebensmittelprodukten - Google Patents

Einheit zum Sterilisieren einer Verpackungsmaterialbahn für eine Maschine zum Verpacken von Lebensmittelprodukten Download PDF

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Publication number
EP2208681B1
EP2208681B1 EP20090150798 EP09150798A EP2208681B1 EP 2208681 B1 EP2208681 B1 EP 2208681B1 EP 20090150798 EP20090150798 EP 20090150798 EP 09150798 A EP09150798 A EP 09150798A EP 2208681 B1 EP2208681 B1 EP 2208681B1
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EP
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Prior art keywords
sterilizing
unit
sterilizing agent
chamber
tank
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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.)
Not-in-force
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EP20090150798
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English (en)
French (fr)
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EP2208681A1 (de
Inventor
Andrea Donati
Andrea Barbieri
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Tetra Laval Holdings and Finance SA
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Tetra Laval Holdings and Finance SA
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Priority to EP20090150798 priority Critical patent/EP2208681B1/de
Priority to PCT/EP2010/050435 priority patent/WO2010081866A2/en
Publication of EP2208681A1 publication Critical patent/EP2208681A1/de
Application granted granted Critical
Publication of EP2208681B1 publication Critical patent/EP2208681B1/de
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    • 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
    • B65B55/04—Sterilising wrappers or receptacles prior to, or during, packaging
    • B65B55/10—Sterilising wrappers or receptacles prior to, or during, packaging by liquids or gases
    • B65B55/103—Sterilising flat or tubular webs

Definitions

  • the present invention relates to a unit for sterilizing a web of packaging material for a machine for packaging food products.
  • Tetra Brik Aseptic registered trademark
  • a typical example of this type of package is the parallelepiped-shaped package for liquid or pourable food products known as Tetra Brik Aseptic (registered trademark), which is made by folding and sealing laminated strip packaging material.
  • the packaging material has a multilayer structure substantially comprising a base layer for stiffness and strength, which may be defined by a layer of fibrous material, e.g. paper, and a number of layers of heat-seal plastic material, e.g. polyethylene film, covering both sides of the base layer.
  • a base layer for stiffness and strength which may be defined by a layer of fibrous material, e.g. paper, and a number of layers of heat-seal plastic material, e.g. polyethylene film, covering both sides of the base layer.
  • the packaging material also comprises a layer of gas- and light-barrier material, e.g. aluminium foil or ethyl vinyl alcohol (EVOH) film, which is superimposed on a layer of heat-seal plastic material, and is in turn covered with another layer of heat-seal plastic material forming the inner face of the package eventually contacting the food product.
  • gas- and light-barrier material e.g. aluminium foil or ethyl vinyl alcohol (EVOH) film
  • packages of this sort are produced on fully automatic packaging machines, on which a continuous tube is formed from the web-fed packaging material.
  • the web of packaging material is unwound off a reel and fed through a sterilizing unit, where it is sterilized, e.g. by immersion in a chamber of liquid sterilizing agent, such as a concentrated solution of hydrogen peroxide and water.
  • the web is then fed into an aseptic chamber where the sterilizing agent is evaporated by heating.
  • the web is then folded into a cylinder and sealed longitudinally to form in known manner a continuous vertical tube, which in effect forms an extension of the aseptic chamber.
  • the tube of packaging material is filled continuously with the food product by pouring and then fed to a form-and-seal unit, where it is gripped between pairs of jaws which seal the tube transversely to form pillow packs.
  • the pillow packs are then separated from one another by cutting the seal joining each two adjacent packs, and are conveyed to a final folding station where they are folded mechanically into the finished shape.
  • the sterilizing unit comprises a chamber containing the sterilizing agent, and into which the web is fed continuously.
  • the sterilizing chamber conveniently comprises two parallel vertical branches connected at the bottom to define a U-shaped path long enough with respect to the travelling speed of the web to allow enough time to treat the packaging material.
  • the sterilizing agent For effective, relatively fast treatment, e.g. in about 7 seconds, to reduce the size of the sterilizing chamber, the sterilizing agent must be maintained at a high temperature, e.g. of around 73°C.
  • the faces of the web of packaging material Being covered with a layer of heat-seal plastic material, normally polyethylene, the faces of the web of packaging material are completely impermeable to the sterilizing agent. Along the edges of the web, however, the layer of fibrous material is exposed, and tends to soak up the sterilizing agent. This is known in the trade as “edge wicking” (edge absorption), and remains within acceptable limits providing the web is only kept for a short time inside the sterilizing chamber, as is the case during normal operation of the machine.
  • edge wicking edge absorption
  • the sterilizing chamber must be emptied immediately. Otherwise, the edges of the layer of fibrous material soak up the sterilizing agent, and edge wicking of a few millimetres in width inevitably impairs subsequent longitudinal sealing of the web to form the tube of packaging material as described above.
  • the sterilizing agent is drained rapidly into a normally double-walled hold tank.
  • the inner walls define an inner shell of the tank containing the sterilizing agent, and the outer walls form an outer shell of the tank defining, with the inner shell, a normally air-filled gap which provides for thermally insulating the sterilizing agent.
  • edge wicking tends to occur anyway, despite emptying the sterilizing chamber.
  • sterilizing units have been devised, in which, before being fed into the sterilizing chamber, the sterilizing agent is heated by circulating it through a heating circuit comprising a countercurrent heat exchanger using water as the operating fluid.
  • the water is fed to the heat exchanger by a circulating pump having an inlet connected to the water mains and an outlet connected to an electric resistor heater interposed between the pump and the exchanger.
  • a compressed air/water tank, for compensating the pressure of the heating circuit, and a maximum pressure valve are branch-connected to a fill conduit in turn connecting the water mains to the pump.
  • Packaging machines of the above type are used widely and satisfactorily in a wide range of food industries, and performance of the sterilizing unit, in particular, is such as to ensure a wide margin of safety as regards regulations governing aseptic packages and the permitted amount of residual sterilizing agent.
  • US 6,638,476 discloses a unit for sterilizing a web of packaging material, as defined in the preamble of claim 1.
  • Number 1 in Figure 1 indicates as a whole a sterilizing unit adapted to sterilize a web 2 of packaging material for a packaging machine (of the known type described above) for producing sealed packages (not shown) of food products, in particular pourable or liquid food products, such as pasteurized or UHT milk, fruit juice, wine, etc.
  • Web 2 may also be used for packaging food products that are pourable when producing packages, and sets after packages are sealed.
  • a food product is a portion of cheese, that is melted when producing packages, and sets after packages are sealed.
  • Web 2 is fed in known manner, not shown, to unit 1 off a reel, so as to be sterilized before being formed into a succession of sealed packages of food products.
  • the form, fill, and seal operations performed in known manner on web 2 (as described above) downstream from unit 1 do not form part of the present invention, and are referred to here purely for the sake of clarity.
  • Web 2 has a multilayer structure and comprises a base layer for stiffness and strength, which may be made of fibrous material, e.g. paper or mineral-filled polypropylene material, and a number of layers of heat-seal plastic material, e.g. polyethylene film, covering both sides of the base layer.
  • a base layer for stiffness and strength which may be made of fibrous material, e.g. paper or mineral-filled polypropylene material, and a number of layers of heat-seal plastic material, e.g. polyethylene film, covering both sides of the base layer.
  • web 2 also comprises a layer of gas-barrier material, e.g. aluminium foil or ethyl vinyl alcohol (EVOH) film, which is superimposed on a layer of heat-seal plastic material, and is in turn covered with another layer of heat-seal plastic material eventually contacting the food product.
  • gas-barrier material e.g. aluminium foil or ethyl vinyl alcohol (EVOH) film
  • unit 1 substantially comprises a U-shaped sterilizing chamber or bath 3 containing a hot liquid sterilizing agent.
  • Chamber 3 is defined by two vertical, respectively inlet and outlet, channel-shaped branches 4, 5 having respective top openings 6, 7 and connected to each other at the bottom by a bottom portion 8.
  • Figure 1 shows a number of horizontal rollers for guiding web 2 through branches 4, 5 and bottom portion 8 of chamber 3, and more specifically: an input roller 9 close to top opening 6 of branch 4, an output roller 10 close to top opening 7 of branch 5, and a return roller 11 housed inside bottom portion 8 of chamber 3.
  • web 2 therefore describes a U-shaped path, the length of which depends on the travelling speed of web 2, and is such as to keep the packaging material long enough inside the sterilizing agent.
  • Chamber 3 forms part of a sterilizing agent control circuit 15 also comprising:
  • Tank 16 provides for topping up chamber 3 to make up the loss in sterilizing agent caused by the wet outgoing web 2, and for holding the sterilizing agent when draining chamber 3, e.g. in the event of any stoppage of the packaging machine.
  • Tank 16 is connected by respective taps 12a, 12b to two different drain conduits 13a, 13b for sampling and changing the sterilizing agent respectively.
  • Valve 21 is preferably a two-way, two-position, normally-open type, but with a flow on/off member (not shown) allowing leakage in the closed position (restricted flow condition) to compensate, as stated, for inevitable sterilizing agent losses in chamber 3 during the production cycle.
  • a commercial valve is sufficient, with a suitably sized hole formed in the on/off member.
  • Valve 23 is also preferably a two-way, two-position, normally-open type for safety reasons, to allow draining of chamber 3 in the event of a malfunction of the electric system.
  • conduit 20 and portion 24 of conduit 17 define a feed line F extending from tank 16 to bottom portion 8 of sterilizing chamber 3 and which can be activated selectively to feed the latter with the sterilizing agent, whilst the whole conduit 17 defines a drain line D which can be activated selectively to drain the sterilizing agent from the sterilizing chamber 3.
  • drain line D and feed line F have a part in common defined by portion 24 of conduit 17.
  • Circuit 15 also comprises a recirculating conduit 25 connecting tank 16 to a known overflow (not shown) formed in the top of inlet branch 4 of chamber 3 to determine the maximum sterilizing agent level in chamber 3.
  • Unit 1 further comprises a system (known per se and not shown) for controlling the temperature of the sterilizing agent in sterilizing chamber 3 through heating the walls of branches 4, 5.
  • Unit 1 also comprises a device 26 (please see in particular Figures 2 and 3 ) for heating the sterilizing agent before it is fed into chamber 3.
  • Device 26 substantially comprises electric heating means 30 and a heat exchanger 31 arranged in contact with heating means 30 and defining a serpentine-shaped passage 32 for the sterilizing agent.
  • heat exchanger 31 is preferably made of stainless steel and is defined by a box-shaped plate, i.e. a box element having a thickness strongly smaller than the other sizes; as clearly shown in Figure 2 , heat exchanger 31 is completely closed from the outside and has an inlet 33 for receiving the sterilizing agent to be heated and an outlet 34 for feeding the heated sterilizing agent to control circuit 15.
  • inlet 33 of heat exchanger 31 is connected, through a conduit 27, to a portion of conduit 20 interposed between valve 21 and tank 16, whilst outlet 34 is connected, through a conduit 28, to recirculating conduit 25.
  • Heat exchanger 31 is arranged in the vertically-oriented configuration shown in Figures 2 and 3 , wherein its thickness extends parallel to a horizontal direction, and inlet 33 is located at a lower position than outlet 34; more specifically, heat exchanger 31 is delimited by a bottom wall 35, a top wall 36, a front wall 37, a rear wall 38, and a pair of thin side walls 39, 40.
  • Heat exchanger 31 is provided internally with diverting means 41 delimiting, together with walls 35-40, serpentine-shaped passage 32 for the sterilizing agent; in the solution depicted in Figures 2 and 3 , diverting means 41 comprise:
  • Each baffle 42, 44 is delimited, at the top, by a ramp-shaped surface 47 rising in the sterilizing agent flow direction; in a completely analogous way, bottom wall 35 has a ramp-shaped inner surface 48 also rising in the flow direction.
  • the sterilizing agent is lowerly in contact with ramp-shaped surfaces 47, 48, i.e. it contacts lower ramp-shaped parts (47, 48) of the walls delimiting serpentine-shaped passage 32.
  • baffles 42, 44, 46 define serpentine-shaped passage 32 as consisting of a plurality of C-shaped portions joined to each other.
  • baffles 42, 44, 46 allows to avoid formation of overheated sterilizing agent pockets within heat exchanger 31.
  • Heating means 30 comprise a pair of electrically-powered heating carpets 51 maintained in close contact under pressure with respective opposite walls 37, 38 of heat exchanger 31.
  • the sandwich structure defined by heat exchanger 31 and heating carpets 51 is maintained pressed by a plurality of pairs of clamping bars 52 acting on the opposite heating carpets 51 through the interposition of respective foamed polymeric sheets 53, preferably made of silicone.
  • bars 52 of each pair extend parallel to walls 36, 37, 38 of heat exchanger 31, have opposite ends laterally protruding from the sandwich structure formed by heat exchanger 31, heating carpets 51 and foamed polymeric sheets 53, and are connected to each other, at their opposite ends, by respective transversal screws 54.
  • Unit 1 operates as follows.
  • chamber 3 When cold-starting, chamber 3 is empty, and all the sterilizing agent is inside tank 16.
  • Pump 18 is turned on to pump a large amount of sterilizing agent, e.g. 50 l/min, through heating device 26.
  • valve 21 is closed, but, as stated, allows a small amount of leakage (a few liters/min) to portion 24 of conduit 17, and therefore along feed line F (restricted flow condition).
  • Valve 23 is open, so chamber 3 is not filled until the best production cycle-start conditions are achieved. In the meantime, the walls of branches 4, 5 of sterilizing chamber 3 are heated.
  • the cycle-start conditions are, for example, 72°C for the walls of sterilizing chamber 3, and 75°C for the sterilizing agent in tank 16 (fill temperature). In which case, sterilizing chamber 3 and web 2 being dry, there is practically no risk of edge wicking.
  • valve 21 is opened, and valve 23 is closed, so sterilizing chamber 3 is filled rapidly with sterilizing agent; after which, valve 21 is closed.
  • the sterilizing agent is maintained at a minimum temperature of 73°C in both sterilizing chamber 3 and tank 16. If either one of these temperatures falls below the predetermined threshold value, a heating cycle is activated by means of the system controlling the temperature of the walls of branches 4, 5 and heating device 26, respectively.
  • Pump 18 is run continually to maintain a continuous flow through heating device 25 and continuous leakage of conveniently a few liters/minute of sterilizing agent through valve 21, to compensate for the loss in sterilizing agent from sterilizing chamber 3 caused, as stated, by the wet outgoing web 2, and to keep the bottom portion 8 of sterilizing chamber 3 and feed line F hot.
  • Surplus sterilizing agent overflows from sterilizing chamber 3, and flows along recirculating conduit 25 back into tank 16.
  • valve 23 is opened immediately to drain the sterilizing agent rapidly from sterilizing chamber 3 into tank 16.
  • sterilizing chamber 3 is cooled to below operating temperature, and simultaneously the sterilizing agent is heated to the fill temperature (e.g. 75°C).
  • Sterilizing chamber 3 is cooled by turning off the system heating the walls of branches 4, 5, and blowing in sterile air at a lower temperature than that of sterilizing chamber 3.
  • the sterilizing agent is heated by electric heating carpets 51 of heating device 26.
  • unit 1 permits to achieve the following advantages.
  • heating carpets 51 can be heated to temperatures higher than the water boiling point (100°C), point that could not be reached in the case of the water/sterilizing agent heat exchanger since steam and bubbles may interfere with the normal water circulation.
  • this solution allows to eliminate all the components of the water circuit (pump, valves, etc.), so avoiding maintenance thereof and reducing complexity and cost of sterilizing agent control circuit 15.
  • heating device 26 allows a strong reduction of the overall bulk of control circuit 15.
  • Figure 4 shows an embodiment, indicated as a whole by 1', of a sterilizing unit in accordance with the present invention, and which is described below only insofar as it differs from unit 1, and using the same reference numbers for parts identical or corresponding to those already described.
  • Unit 1' differs from unit 1 by the fact that outlet 34 of heat exchanger 31 is connected, through conduit 28, to portion 24 of conduit 17, i.e. to feed line F, instead of recirculating conduit 25. It is therefore evident that leakage of sterilizing agent through valve 21 in the closed condition is useless in this case, and therefore valve 21 may be replaced with a two-way, two-position, normally-open commercial valve 21' having no hole formed in the on/off member.
  • valve 23 In use, when valve 23 is in the open condition, the sterilizing agent flow exiting from outlet 34 of heating device 26 is recirculated into tank 16 through drain line D.
  • Figure 5 shows another different embodiment, indicated as a whole by 1" , of a sterilizing unit in accordance with the present invention, and which is described below only insofar as it differs from unit 1', and using the same reference numbers for parts identical or corresponding to those already described.
  • unit 1" differs from unit 1' only insofar as a further valve 60", of the same type as valve 21 of unit 1 (i.e. with an on/off member provided with a sized hole to allow, in the closed or restricted flow condition, leakage of few liters/min of sterilizing agent), is arranged along the portion of conduit 17 extending between conduit 28 and sterilizing chamber 3.
  • a further valve 60 of the same type as valve 21 of unit 1 (i.e. with an on/off member provided with a sized hole to allow, in the closed or restricted flow condition, leakage of few liters/min of sterilizing agent), is arranged along the portion of conduit 17 extending between conduit 28 and sterilizing chamber 3.
  • valve 60" is maintained in the closed condition (with a continuous leakage of a few liters/minute of sterilizing agent) so allowing a reduction of the sterilizing agent flow recirculated between sterilizing chamber 3 and tank 16.
  • Figure 6 shows a further embodiment, indicated as a whole by 1"', of a sterilizing unit in accordance with the present invention, and which is described below only insofar as it differs from unit 1" , and using the same reference numbers for parts identical or corresponding to those already described.
  • unit 1"' differs from unit 1" only in that the further valve 60"', for reducing sterilizing agent flow recirculated between sterilizing chamber 3 and tank 16 during the production cycle, is arranged along conduit 28, which has a smaller section that that of conduit 17; therefore, it is possible to use a valve suitable for operating with flow rates lower than those along conduit 17 and whose cost is consequently smaller than that of valve 60".

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Claims (10)

  1. Einheit (1', 1", 1"') zum Sterilisieren einer Bahn (2) von Verpackungsmaterial für eine Maschine zum Verpacken von Lebensmittelprodukten, wobei die Einheit (1', 1", 1"') umfasst:
    - eine Sterilisierkammer (3), welche ein Sterilisiermittel enthält;
    - Beförderungsmittel (9, 10, 11) zum Zuführen der Bahn (2) durch die Sterilisierkammer (3), ehe die Bahn (2) in eine Folge von versiegelten Verpackungen für Lebensmittelprodukte geformt wird;
    - einen Haltetank (16) für das Sterilisiermittel;
    - Zuführmittel (F, 18), welche selektiv aktiviert werden können, um das Sterilisiermittel von dem Tank (16) zu der Sterilisierkammer (3) zuzuführen;
    - Ablaufmittel (D, 23), welche selektiv aktiviert werden können, um das Sterilisiermittel von einem unteren Bereich (8) der Sterilisierkammer (3) in den Tank ablaufen zu lassen, im Fall eines Anhaltens der Verpackungsmaschine; und
    - eine Erwärmungsvorrichtung (26) zum Erwärmen des Sterilisiermittels, ehe es der Sterilisierkammer (3) zugeführt wird;
    dadurch gekennzeichnet, dass die Erwärmungsvorrichtung (26) einen Sterilisiermitteleinlass (33) und einen Sterilisiermittelauslass (34) aufweist, welche beide mit den Zuführmitteln (F, 18) verbunden sind.
  2. Einheit, wie sie in Anspruch 1 beansprucht wird, wobei der Sterilisiermittelauslass (34) der Erwärmungsvorrichtung (26) auch mit den Ablaufmitteln (D, 23) verbunden ist.
  3. Einheit, wie sie in Anspruch 1 oder 2 beansprucht wird, wobei die Zuführmittel eine Zuführleitung (F) umfassen, welche sich von dem Tank (16) zu der Sterilisierkammer (3) erstreckt, und die Ablaufmittel eine Ablaufleitung (D) umfassen, welche sich von dem Tank (16) zu dem unteren Bereich (8) der Sterilisierkammer (3) erstreckt, und wobei die Zuführleitung (F) und die Ablaufleitung (D) selektiv über erste Ventilmittel (23) verbunden sein können, um es dem Sterilisiermittelfluss, welcher aus der Erwärmungsvorrichtung (26) austritt, zu ermöglichen, in den Tank (16) rückgeführt zu werden.
  4. Einheit, wie sie in Anspruch 3 beansprucht wird, wobei die Zuführleitung (F) und die Ablaufleitung (D) einen Zuführkanal (20) umfassen, welcher sich von dem Tank (16) erstreckt, einen Ablaufkanal (22), welcher über die ersten Ventilmittel (23) zu dem Tank (16) führt, und einen gemeinsamen Kanal (24), welcher den Zuführkanal (20) und den Ablaufkanal (22) mit dem unteren Bereich (8) der Sterilisierkammer (3) verbindet.
  5. Einheit, wie sie in Anspruch 3 oder 4 beansprucht wird, wobei der Auslass (34) der Erwärmungsvorrichtung (26) mit der Sterilisierkammer (3) über die Zuführleitung (F) und zweite Ventilmittel (60", 60"'), welche zwischen einem vollständig offenen Zustand und einem Zustand eingeschränkten Flusses eingestellt werden können, verbunden ist.
  6. Einheit, wie sie in einem der vorhergehenden Ansprüche beansprucht wird, wobei die Erwärmungsvorrichtung (26) elektrische Erwärmungsmittel (30) und einen Wärmetauscher (31) umfasst, welcher in Kontakt mit den Erwärmungsmitteln (30) angeordnet ist und einen serpentinenförmingen Durchlass (32) für das Sterilisiermittel definiert, welcher den Einlass (33) und den Auslass (34) verbindet.
  7. Einheit, wie sie in Anspruch 6 beansprucht wird, wobei der serpentinenförmige Durchlass (32) durch eine Vielzahl C-förmiger Bereiche, welche miteinander verbunden sind, definiert ist.
  8. Einheit, wie sie in Anspruch 6 oder 7 beansprucht wird, wobei der serpentinenförmige Durchlass (32) rampenförmige Oberflächen (47, 48) umfasst, welche unten mit dem Sterilisiermittelfluss in Kontakt sind.
  9. Einheit, wie sie in einem der Ansprüche 6 bis 8 beansprucht wird, wobei der Wärmetauscher (32) eine schachtelförmige Platte umfasst, welche im Inneren vorgesehen ist, mit Umlenkmitteln (41), welche den serpentinenförmigen Durchlass (32) begrenzen.
  10. Einheit, wie sie in einem der Ansprüche 6 bis 9 beansprucht wird, wobei die elektrischen Erwärmungsmittel (30) ein Paar elektrisch betriebener Heizmatten (51) umfassen, welche in engem Kontakt unter Druck mit einander gegenüberliegenden Teilen des Wärmetauschers (31) gehalten werden.
EP20090150798 2009-01-16 2009-01-16 Einheit zum Sterilisieren einer Verpackungsmaterialbahn für eine Maschine zum Verpacken von Lebensmittelprodukten Not-in-force EP2208681B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20090150798 EP2208681B1 (de) 2009-01-16 2009-01-16 Einheit zum Sterilisieren einer Verpackungsmaterialbahn für eine Maschine zum Verpacken von Lebensmittelprodukten
PCT/EP2010/050435 WO2010081866A2 (en) 2009-01-16 2010-01-15 A unit for sterilizing a web of packaging material for a machine for packaging food products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20090150798 EP2208681B1 (de) 2009-01-16 2009-01-16 Einheit zum Sterilisieren einer Verpackungsmaterialbahn für eine Maschine zum Verpacken von Lebensmittelprodukten

Publications (2)

Publication Number Publication Date
EP2208681A1 EP2208681A1 (de) 2010-07-21
EP2208681B1 true EP2208681B1 (de) 2013-07-03

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DE102011056440A1 (de) * 2011-12-14 2013-06-20 Krones Ag Vorrichtung zum Sterilisieren von Behältnissen mit Ableitungselement für Sterilisationsmittel
WO2017194597A1 (en) 2016-05-11 2017-11-16 Ge Healthcare Bioprocess R&D Ab Separation matrix
EP3455241B1 (de) 2016-05-11 2022-02-23 Cytiva BioProcess R&D AB Verfahren zur reinigung und/oder sanierung einer trennmatrix
US10703774B2 (en) 2016-09-30 2020-07-07 Ge Healthcare Bioprocess R&D Ab Separation method
CN109311949B (zh) 2016-05-11 2022-09-16 思拓凡生物工艺研发有限公司 储存分离基质的方法
US10730908B2 (en) 2016-05-11 2020-08-04 Ge Healthcare Bioprocess R&D Ab Separation method
IT201800002933A1 (it) * 2018-02-22 2019-08-22 Gd Spa Dispositivo e metodo per la sterilizzazione di un nastro di materiale da incarto

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Publication number Priority date Publication date Assignee Title
ATE261851T1 (de) * 1998-06-30 2004-04-15 Tetra Laval Holdings & Finance Anlage für die sterilisation von verpackungsmaterial für eine maschine zum verpacken eines fliessfähigen lebensmittels
DE202004018968U1 (de) * 2004-12-08 2005-02-10 Bbt Thermotechnik Gmbh Wärmetauscher
NL1029792C2 (nl) * 2005-08-24 2007-02-27 Ferro Techniek Holding Bv Inrichting en werkwijze voor het verwarmen van vloeistoffen.

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WO2010081866A3 (en) 2010-10-07
WO2010081866A2 (en) 2010-07-22

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