EP0361858A1 - Verfahren und Vorrichtung zum sterilen Verpacken - Google Patents

Verfahren und Vorrichtung zum sterilen Verpacken Download PDF

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Publication number
EP0361858A1
EP0361858A1 EP89309781A EP89309781A EP0361858A1 EP 0361858 A1 EP0361858 A1 EP 0361858A1 EP 89309781 A EP89309781 A EP 89309781A EP 89309781 A EP89309781 A EP 89309781A EP 0361858 A1 EP0361858 A1 EP 0361858A1
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EP
European Patent Office
Prior art keywords
stream
chamber
outlet
inlet
flow
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Withdrawn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
EP89309781A
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English (en)
French (fr)
Inventor
Bunce Kevin
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.)
Elopak Systems AG
Original Assignee
Elopak Systems 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 Elopak Systems AG filed Critical Elopak Systems AG
Publication of EP0361858A1 publication Critical patent/EP0361858A1/de
Withdrawn legal-status Critical Current

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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

Definitions

  • This invention relates to a packaging method and an apparatus for use in the method.
  • an aseptic packaging machine includes a chain conveyor conveying cartons along a path in an aseptic chamber, which path includes an advance leg and a return leg each extending along the machine.
  • Ultra-violet germicidal lamps extend over at least a major portion of the advance leg. In the region of the beginning of this major portion there is disposed a nozzle arrangement, incorporated in a top closure pre-breaking device, to spray particularly the inside of the carton with hydrogen peroxide.
  • the cartons In the return leg, the cartons first arrive at a filling device whereby they are filled with liquid, for example long-life milk. After filling, the cartons are top-heated and sealed at a top-heating station and a top-sealing station.
  • the carton entry to and exit from the chamber have aseptic air curtains.
  • aseptic air is fed from a main sterile air filter to aseptic air inlets of the chamber, in which chamber the aseptic air flows from the inlets relatively smoothly to a front end of the chamber, where the aseptic air leaves via an aseptic air outlet.
  • the aseptic air act as a scavenging gas removing microbes and hydrogen peroxide from the chamber, particularly tending to prevent the microbes and the hydrogen peroxide from being carried up to the filling device, but the aseptic air also maintains the interior of the chamber at a pressure slightly above atmospheric and thus discourages the entry of ambient air into the chamber. How the hydrogen peroxide vapour created is dealt with is not disclosed.
  • US 4296068 describes a commodity packaging apparatus in which a succession of food containers are fed intermittently along a horizontal path within an aseptic chamber from an infeed section and a loading section, through a sterilizing section, a drying section, a filling section and a lidding section to a discharge section.
  • the sterilizing section there are formed over and under the feed path two opposed sterilizing chambers into which a sterilizing solution is supplied in subdivided form for application to the successive containers.
  • the sterilizing chambers are provided with spray nozzles for spraying the sterilizing solution onto the containers, while in others the sterilizing solution is ultrasonically atomized into fine mist in a separate atomizing section, the mist being then directed into the sterilizing chambers.
  • the lower wall of the sterilizing section may have a drain outlet formed therein for carrying off for re-use large drops of the sterilizing solution that may collect thereon.
  • the sterilizing chambers have mist outlets connected to a recovery chamber in which an electrostatic filter or temperature drop means may recover sterilizing solution for re-use.
  • the drying section comprises upper and lower air boxes disposed above and below the containers which receive filtered and heated air under pressure and supply the same as jets to the containers to cause the containers coming out of the sterilizing section to be thus dried and freed of the sterilizing solution.
  • the chamber also has an inlet for filtered air under pressure, this clean air partly flowing through the discharge section and leaving the chamber at the outlet for containers, and partly flowing through the filling section, the drying section, the sterilizing section, the loading section and the infeed section, leaving the chamber through an open top of the infeed section.
  • a sterilizing apparatus for packaging jars is equipped with a preparation apparatus for a mixture of hot air and hydrogen peroxide vapour and a closable sterilizing chamber, into which jars to be sterilized are introduced.
  • a closure lid for the sterilizing chamber includes clamps for suspending a jar to be sterilized within the sterilizing chamber.
  • the apparatus has a circulatory system of mixture supply.
  • the bypass and the sterilizing chamber are alternately connected with the circulatory system by means of a reversing valve during non-sterilizing and sterilizing periods.
  • a circulating blower, an air heater, and the preparation apparatus are also part of the circulatory system.
  • the circulating blower can also draw in ambient air through a non-return valve. After the supply of mixture to the sterilizing chamber is stopped, the chamber can be left closed for about 3 seconds more, in order to let the peroxide work. Another possibility is to open the chamber and let the peroxide condensate continue to act on the open jar. In this way, the peroxide evaporates more easily. After the chosen time period has elapsed, the lid is lifted upwards and the jar lifted therewith. The condensed peroxide starts to evaporate immediately subsequent to the treatment period because of the warming of the jar walls by the heat generated in the sterilizing chamber.
  • Hydrogen peroxide vapour needs to be dealt with properly, because not only is an atmosphere containing hydrogen peroxide vapour unpleasant and unhealthy for the operating personnel, but hydrogen peroxide promotes corrosion of metals.
  • a continuously moving web consisting of paperboard coated on both faces with thermoplastics is continuously formed into a tube which continuously advances downwards and is continuously filled with liquid, the tube having respective opposite sides thereof heat-and pressure-sealed together at intervals therealong to form individual, filled cartons, which are then separated from each other by severing at the sealing loctions.
  • the interior of the sterile chamber forms part of a flow circuit in which the mixture of air and agent vapour forming the chamber atmosphere are circulated with the aid of a fan connected in the circuit, there being a throttle provided between the chamnber and the fan for generating above-ambient pressure in the sterile chamber.
  • a liquid separator Upstream of the fan is a liquid separator wherefrom separated agent liquid can be discharged periodically by means of a tap.
  • the mixture of air and agent vapour enters the fan through the throttle and subsequently passes through a filter, in an inlet chamber of which an electrically heated spiral heater is located. From the filter, the heated mixture returns to the sterile chamber through a blowing device in which heated sterile medium is blown on both sides of the web at high speed.
  • the web arrives at the blowing device having been drawn through a bath filled with agent liquid and then enters the sterile chamber.
  • the agent liquid still adhering to the web is atomized or volatilized by the heated sterile medium into the chamber atmosphere.
  • the web After passing the blowing device, the web is formed into a flexible tube which is welded together along the sides of the web to form a closed tube.
  • Air for the welding is aspired from the ambient atmosphere with the aid of a blower, is heated by an electrical heating spiral, is passed through a sterilizer, and is blown into a gap between the two overlapping longitudinal edges of the web with the aid of a hood.
  • the thermoplastics at the inside of the tube is heated and contact rolls effect hermetic welding with formation of a longitudinal seam.
  • the bottom of the sterile chamber is dish-shaped and at the lowest point a discharge take-off line branches off and leads to the liquid separator. Ambient air is drawn into the circuit at a location upstream of the fan and downstream of the
  • US 4055035 discloses another example of the same system, in which the blowing device extends down into the tube and the mixture of sterilizing agent vapour and air so produced is conducted by a hood in the tube into a further hood at the transition between the web and the tube and then into an uppermost hood wherein an application device for applying the agent liquid to the web is located.
  • An outlet for the mixture from the uppermost hood leads to a liquid ring compressor which operates with a circulating water ring as a sealing medium.
  • An outlet from the liquid ring compressor is connected to a liquid separator, from which the air from the mixture is conducted to a sterile air heater and thence to the blowing device in the tube. Ambient atmosphere is drawn into the circuit at the underside of the uppermost hood.
  • an aseptic packaging method comprising advancing packaging material through a chamber, causing a main stream of substantially sterile gaseous substance to flow into said chamber through first inlet means, around said material in said chamber, and out of said chamber through first outlet means, applying to a surface of said material a sterilizing agent, allowing said sterilizing agent to act in a sterilizing manner upon said surface, and operating pumping means to introduce through second inlet means a second stream of substantially sterile gaseous substance to flow over said surface and to entrain the sterilizing agent, characterized in that the second stream comprises sterile gaseous substance drawn from the main stream through second outlet means of said chamber by said pumping means.
  • apparatus for aseptic packaging comprising a chamber, conveying means for advancing packaging material through said chamber, first inlet means to said chamber for introduction of a main stream of substantially sterile gaseous substance to flow around said material, first outlet means from said chamber for removal of said main stream therefrom, applying means for applying a sterilizing agent to a surface of said material, second inlet means to said chamber for introduction of a second stream of substantially sterile gaseous substance to flow over said surface and to entrain the sterilizing agent, and pumping means for producing said second stream, characterized by second outlet means from said chamber for removal from said chamber of gaseous substance of said main stream to constitute said second stream, and duct means connecting said second outlet means to said second inlet means.
  • the second stream circuit need not receive ambient air directly. Therefore, the amount of sterilization work required within the circuit itself can be minimized.
  • the station includes an air fan A downstream of which is an air pressure switch B which detects the air pressure in the circuit including the fan A, in order to maintain the pressure at substantially a desired value.
  • Downstream of the switch B is a Leister heater C which is rated to achieve temperatures of up to 250°C at air flow rates above the minimum requirement of the heater C.
  • the air temperature at the outlet from the heater C is monitored by a thermocouple D for controlling the heater C.
  • the hot air can be fed though a nozzle E, or through a by-pass F into a return pipe G having a condensate drain H.
  • Downstream of the return pipe G is a condenser I followed by a filter J which is connected by a return pipe K to the intake of the air fan A.
  • the nozzle E is shown directing hot air into a carton L which is being advanced step-by-step by a chain conveyor (not shown) along with a number of other cartons (also not shown) through an aseptic chamber M of the aseptic packaging machine.
  • a chain conveyor not shown
  • the open-topped, bottom-sealed carton L has been sprayed internally with hydrogen peroxide (and possibly also exposed to ultra-violet radiation) in order to sterilize the internal surface of the carton.
  • the hot gas blown into the carton L by the nozzle E atomizes or vaporizes the hydrogen peroxide in the carton, the mixture being expelled through a square-mouthed hood N fitted into the top wall O of the chamber M, the uppermost extremities of the carton L lying just below the bottom surface of the wall O and registering with the lowermost extremities of the hood N.
  • the mixture flows over a water-chilled coil P and past a chilled jacket Q, both of the condenser I, the hydrogen peroxide vapour condenses and runs back down the pipe G to the drain H and thence to a hydrogen peroxide collector R, whence the hydrogen peroxide can be recycled, if desired.
  • the through-flow cross-sectional area of the return pipe G is less than the through-flow cross-sectional area of the hood N in order to incfease the velocity of the mixture, to minimise the time taken for the mixture to flow from the hood N to the condenser I.
  • the through-flow cross-sectional area for the mixture in the condenser I is significantly greater than the through-flow cross-sectional area of the pipe G, to maximise the time taken for the mixture to flow through the condenser I, in order to encourage condensation of the hydrogen peroxide vapour.
  • the filter J is relatively fine, for example, is a 5 micron filter, in order to filter out hydrogen peroxide vapour which may not have been removed by the condenser I.
  • the chamber M has a main inlet and a main outlet (both not shown) for sterile air.
  • the machine 1 for carrying out aseptic packaging includes at one end of the machine a conventional device 2 for pre-forming (including bottom sealing) gable-topped cartons.
  • the open-topped, pre-formed cartons are taken to the other end of the machine through a closed channel 3 by means of a chain system.
  • the channel 3 is bounded by covers 4 individually liftable about hinges to give access to the channel interior.
  • the open-topped cartons are advanced stepwise and in a vertically upright condition by means of conveying chains 5 along a hairpin-shaped path P of which an advance leg extends along the machine towards the device 2 and a return leg extends along the machine 1 back towards its front end.
  • the cartons exit from the channel 3 directly into the aseptic chamber M which totally encloses the chains 5 and which is provided with access covers 6′′′.
  • the chains 5 carry the cartons first of all to a top pre-breaking device 7, where the open top of each carton is pre-­broken.
  • the cartons are passed beneath high-intensity ultra­violet germicidal lamps 8 which extend over a section of the hairpin-­shaped path p which forms at least a major portion, in the present case in fact a major portion, of the length of the advance leg of the path P.
  • some means for introducing into the interior of the carton a fine spray of hydrogen peroxide (H202).
  • H202 hydrogen peroxide
  • This means comprises a nozzle arrangement 7′ incorporated in the pre-breaker 7 and serving to spray particularly the inside of the carton with H202.
  • the chains 5 carry the cartons round through 180° to start the return leg of the path P.
  • the cartons first arrive at the agent-removing station shown in Figures 1 and 2 and then at a filling device 9 where the cartons are filled with an aseptic product, for example long-life milk, the cartons then proceeding to a top heating device 10 where themoplastics surfaces of the top of each carton are heated to a tacky condition, and the cartons are then advanced to a top sealing device 11 where the gable tops are sealed.
  • the cartons leave the aseptic chamber M at an exit hole 6 ⁇ therefrom at the front end of the machine.
  • aseptic air is fed from a main sterile air filter to aseptic air inlets 13 and 13′ of the chamber M, in which chamber the aseptic air flows from the inlet 13 relatively smoothly to the front end of the chamber M, where the aseptic air leaves via an aseptic air outlet 14, towards a filtering system (not shown).
  • the aseptic air act as a scavenging gas removing microbes and hydrogen peroxide from the chamber M, particularly tending to prevent the microbes and the hydrogen peroxide from being carried up to the filling device 9, but the aseptic air also maintains the interior of the chamber M at a pressure slightly above atmospheric and thus discourages the entry of ambient air into the chamber.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
EP89309781A 1988-09-26 1989-09-26 Verfahren und Vorrichtung zum sterilen Verpacken Withdrawn EP0361858A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888822551A GB8822551D0 (en) 1988-09-26 1988-09-26 Packaging
GB8822551 1988-09-26

Publications (1)

Publication Number Publication Date
EP0361858A1 true EP0361858A1 (de) 1990-04-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89309781A Withdrawn EP0361858A1 (de) 1988-09-26 1989-09-26 Verfahren und Vorrichtung zum sterilen Verpacken

Country Status (2)

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EP (1) EP0361858A1 (de)
GB (1) GB8822551D0 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305478A1 (de) * 1993-02-23 1994-08-25 Tetra Laval Holdings & Finance Verfahren und Vorrichtung zum Sterilisieren von Packungen
WO1995011765A1 (en) * 1993-10-26 1995-05-04 Gleneagles Spring Waters Company Limited Continuous washing and transfer of articles to a clean room
US5424034A (en) * 1991-07-17 1995-06-13 Tetra Laval Holdings & Finance Sa Method and an apparatus for sterilizing a continuous packaging material web
WO1997035768A1 (en) * 1996-03-27 1997-10-02 Tetra Laval Holdings & Finance S.A. Method and device for sterilizing food packaging containers
DE19642987A1 (de) * 1996-10-18 1998-04-23 Tetra Laval Holdings & Finance Verfahren und Vorrichtung zum Sterilisieren und Befüllen von Verpackungsbehältern
WO1999008932A1 (en) * 1997-08-15 1999-02-25 Tetra Laval Holdings & Finance S.A. Uv radiation and vapor-phase hydrogen peroxide sterilization of packaging
WO1999021593A1 (en) * 1997-10-29 1999-05-06 Tetra Laval Holdings & Finance S.A. Method and apparatus for sterilizing a packaging sheet material
US6145276A (en) * 1996-03-27 2000-11-14 Tetra Laval Holdings & Finance S.A. Method and device for sterilizing food packaging containers
DE19945500C2 (de) * 1998-09-22 2003-05-22 Sig Combibloc Gmbh Verfahren und Vorrichtung zum Entkeimen von Behältern in einer Füllmaschine
DE4422713B4 (de) * 1994-06-29 2004-04-08 Robert Bosch Gmbh Verfahren zum Sterilisieren von Teilen einer Verpackungsmaschine sowie eine Vorrichtung zum Durchführen des Verfahrens
US7145158B2 (en) 2002-03-12 2006-12-05 Tetra Laval Holding & Finance S.A. Device for treating a packaging material by means of UV radiation
DE102014118776A1 (de) * 2014-12-16 2016-06-16 Sig Technology Ag Verfahren und Vorrichtung zum Sterilisieren von Behältern

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723060A (en) * 1968-02-26 1973-03-27 Ex Cell O Corp Aseptic packaging machine
GB1414241A (en) * 1973-10-04 1975-11-19 Altstaedter Verpack Vertrieb Apparatus for sterile packaging
US4055035A (en) * 1975-04-07 1977-10-25 Ab Ziristor Method and an arrangement for the purification of air in packing machines
WO1979001074A1 (en) * 1978-05-16 1979-12-13 Ex Cell O Corp Method and means for applying bactericide to container for sterilization
US4296068A (en) * 1979-02-19 1981-10-20 Dai Nippon Insatsu Kabushiki Kaisha Apparatus for sterilizing a succession of food containers or the like
US4375145A (en) * 1979-12-20 1983-03-01 Novus Corp. N.V. Packaging, particularly aseptic packaging of aseptic products in cartons
EP0082368A1 (de) * 1981-12-17 1983-06-29 Robert Bosch Gmbh Vorrichtung zum Sterilisieren von Verpackungsbehältern
DE8712317U1 (de) * 1987-08-27 1988-03-31 Ammann, Siegfried, Ing.(grad.), 8901 Königsbrunn Vorrichtung zur Bereitung eines Wasserstoffperoxid-Luft-Gemisches zur Sterilisierung von Behältern

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723060A (en) * 1968-02-26 1973-03-27 Ex Cell O Corp Aseptic packaging machine
GB1414241A (en) * 1973-10-04 1975-11-19 Altstaedter Verpack Vertrieb Apparatus for sterile packaging
US4055035A (en) * 1975-04-07 1977-10-25 Ab Ziristor Method and an arrangement for the purification of air in packing machines
WO1979001074A1 (en) * 1978-05-16 1979-12-13 Ex Cell O Corp Method and means for applying bactericide to container for sterilization
US4296068A (en) * 1979-02-19 1981-10-20 Dai Nippon Insatsu Kabushiki Kaisha Apparatus for sterilizing a succession of food containers or the like
US4375145A (en) * 1979-12-20 1983-03-01 Novus Corp. N.V. Packaging, particularly aseptic packaging of aseptic products in cartons
EP0082368A1 (de) * 1981-12-17 1983-06-29 Robert Bosch Gmbh Vorrichtung zum Sterilisieren von Verpackungsbehältern
DE8712317U1 (de) * 1987-08-27 1988-03-31 Ammann, Siegfried, Ing.(grad.), 8901 Königsbrunn Vorrichtung zur Bereitung eines Wasserstoffperoxid-Luft-Gemisches zur Sterilisierung von Behältern

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5424034A (en) * 1991-07-17 1995-06-13 Tetra Laval Holdings & Finance Sa Method and an apparatus for sterilizing a continuous packaging material web
US5569438A (en) * 1991-07-17 1996-10-29 Tetra Laval Holdings & Finance S.A. Apparatus for sterilizing a continuous packaging material web
DE4305478A1 (de) * 1993-02-23 1994-08-25 Tetra Laval Holdings & Finance Verfahren und Vorrichtung zum Sterilisieren von Packungen
WO1995011765A1 (en) * 1993-10-26 1995-05-04 Gleneagles Spring Waters Company Limited Continuous washing and transfer of articles to a clean room
DE4422713B4 (de) * 1994-06-29 2004-04-08 Robert Bosch Gmbh Verfahren zum Sterilisieren von Teilen einer Verpackungsmaschine sowie eine Vorrichtung zum Durchführen des Verfahrens
WO1997035768A1 (en) * 1996-03-27 1997-10-02 Tetra Laval Holdings & Finance S.A. Method and device for sterilizing food packaging containers
US6145276A (en) * 1996-03-27 2000-11-14 Tetra Laval Holdings & Finance S.A. Method and device for sterilizing food packaging containers
DE19642987A1 (de) * 1996-10-18 1998-04-23 Tetra Laval Holdings & Finance Verfahren und Vorrichtung zum Sterilisieren und Befüllen von Verpackungsbehältern
WO1998017579A1 (de) * 1996-10-18 1998-04-30 Tetra Laval Holdings & Finance S.A. Verfahren und vorrichtung zum sterilisieren und befüllen von verpackungsbehältern
US6351924B1 (en) 1996-10-18 2002-03-05 Tetra-Laval Holdings & Finance, S.A. Method and device for sterilizing and filling packing containers
US6094887A (en) * 1997-08-15 2000-08-01 Tetra Laval Holdings & Finance, Sa Ultraviolet energy and vapor-phase hydrogen peroxide sterilization of containers
WO1999008932A1 (en) * 1997-08-15 1999-02-25 Tetra Laval Holdings & Finance S.A. Uv radiation and vapor-phase hydrogen peroxide sterilization of packaging
EP0919246A1 (de) * 1997-10-29 1999-06-02 Tetra Laval Holdings & Finance SA Verfahren und Vorrichtung zum Sterilisieren von Packstoffbahnen
WO1999021593A1 (en) * 1997-10-29 1999-05-06 Tetra Laval Holdings & Finance S.A. Method and apparatus for sterilizing a packaging sheet material
DE19945500C2 (de) * 1998-09-22 2003-05-22 Sig Combibloc Gmbh Verfahren und Vorrichtung zum Entkeimen von Behältern in einer Füllmaschine
US7145158B2 (en) 2002-03-12 2006-12-05 Tetra Laval Holding & Finance S.A. Device for treating a packaging material by means of UV radiation
DE102014118776A1 (de) * 2014-12-16 2016-06-16 Sig Technology Ag Verfahren und Vorrichtung zum Sterilisieren von Behältern
WO2016096472A1 (de) * 2014-12-16 2016-06-23 Sig Technology Ag Verfahren und vorrichtung zum sterilisieren von behältern
CN107108058A (zh) * 2014-12-16 2017-08-29 Sig技术股份公司 对容器杀菌的方法和设备
JP2018500246A (ja) * 2014-12-16 2018-01-11 エスアイジー テクノロジー アーゲー 容器を滅菌するための方法および装置
US10858133B2 (en) 2014-12-16 2020-12-08 Sig Technology Ag Method and device to sterilise containers

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Publication number Publication date
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