WO2010056175A1 - Procédé d'emballage d'un aliment et son traitement à chaud aux fins d'allonger sa durée de conservation - Google Patents

Procédé d'emballage d'un aliment et son traitement à chaud aux fins d'allonger sa durée de conservation Download PDF

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Publication number
WO2010056175A1
WO2010056175A1 PCT/SE2009/000422 SE2009000422W WO2010056175A1 WO 2010056175 A1 WO2010056175 A1 WO 2010056175A1 SE 2009000422 W SE2009000422 W SE 2009000422W WO 2010056175 A1 WO2010056175 A1 WO 2010056175A1
Authority
WO
WIPO (PCT)
Prior art keywords
packaging container
food
liquid
zone
packaging
Prior art date
Application number
PCT/SE2009/000422
Other languages
English (en)
Inventor
Bengt Andersson
Aksel Christensen
Original Assignee
Tetra Laval Holdings & Finance S.A.
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 & Finance S.A. filed Critical Tetra Laval Holdings & Finance S.A.
Publication of WO2010056175A1 publication Critical patent/WO2010056175A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00—Preservation or chemical ripening of fruit or vegetables
    • A23B7/005—Preserving by heating
    • A23B7/0053—Preserving by heating by direct or indirect contact with heating gases or liquids
    • A23B7/0056—Preserving by heating by direct or indirect contact with heating gases or liquids with packages
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/02—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating materials in packages which are progressively transported, continuously or stepwise, through the apparatus
    • A23L3/04—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating materials in packages which are progressively transported, continuously or stepwise, through the apparatus with packages on endless chain or band conveyors
    • 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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/001—Packaging other articles presenting special problems of foodstuffs, combined with their conservation
    • 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

Definitions

  • the present invention relates to a method of packing a food and, for purposes of extending its shelf-life, heat treating the food in a packaging container consisting of a packaging laminate comprising a core layer of paper or paperboard and outer, liquid- tight layers of polyethylene, in which method the food is filled into the open packaging container which is then closed and sealed and fed through the inlet in a treatment chamber or tunnel provided with an inlet and outlet and in which the packaging container is conveyed in sequence through a heating zone in which the food is heated to a desired treatment temperature, a holding zone in which the food is maintained at the desired treatment temperature for a sufficient period of time to exterminate, deactivate or eliminate undesirable microorganisms in the food, and a cooling zone in which the food is cooled, whereafter the packaging container is removed from the treatment chamber or tunnel through the outlet for further transport and handling.
  • a packaging container consisting of a packaging laminate comprising a core layer of paper or paperboard and outer, liquid- tight layers of polyethylene
  • the food is heated using a liquid medium, preferably hot water, which in finely divided form is injected showered against the outer walls of the package in order to heat the food to the desired treatment temperature.
  • a liquid medium preferably hot water
  • the packaging container is thereafter fed into the subsequent holding zone and held at the treatment temperature by the supply of additional liquid medium, preferably hot water, which in finely divided form is sprayed or showered against the outer walls of the package in order to hold the packed food at the treatment temperature for a sufficiently long time to exterminate, deactivate or eliminate undesirable microorganisms in the food.
  • additional liquid medium preferably hot water
  • the packaging container is conveyed further into the cooling zone where the food is cooled by means of cold water which is sprayed or showered against the outer walls of the packaging container through suitably directed nozzles.
  • the prior art method functions generally well, but it not seldom happens however that the packaging container, during its passage through the treatment chamber or tunnel, has a tendency to become sloppy and difficult to handle because of the liquid medium which is absorbed into and wets the moisture and liquid-sensitive paper or paperboard layer of the packaging container. If the liquid penetration or wicking in the paper or paperboard layer is excessively great, it may even happen that the packaging wall delaminates and thereby renders the packaging container unusable.
  • One object of the present invention is therefore to realise a method which obviates the drawbacks of the type associated with the above described prior art technology.
  • a further object of the present invention is to realise a method of the type described by way of introduction which may be put into use without the risk that the packaging container becomes sloppy and difficult to handle and/or delaminates because of excessive liquid penetration into the moisture- and liquid-sensitive paper or paperboard layer of the packaging container.
  • the present invention thus realises a method of packing a food and treating it for purposes of extending its shelf-life in a packaging container of a packaging laminate comprising a core layer of paper or paperboard and outer, liquid-tight layers of polyethylene, in which method the food is filled into the open packaging container which is thereafter closed and sealed and fed through the inlet into a treatment chamber or tunnel provided with an inlet and outlet, in which the packaging container is conveyed in sequence through a heating zone in which the food is heated to a predetermined treatment temperature by means of a liquid heating medium which is applied on the outer walls of the packaging container, a holding zone in which the food is held at the predetermined treatment temperature for a sufficient period of time to exterminate, deactivate or otherwise eliminate microorganisms present in the packaging container with the aid of a liquid heating medium which is applied on the outer walls of the packaging container throughout the entire holding period, and a cooling zone in which the heat treated food is cooled, whereafter the packaging container is removed from the treatment chamber or tunnel through the outlet for further transport and handling.
  • the method according to the present invention is characterised in that the liquid heating medium, during the heating as well as during the holding period of the packed food is applied on the outer walls of the packaging container by seepage or free fall from one or more liquid containers disposed at only a short distance above the packaging container.
  • One explanation for the possibility of carrying out both heating and holding using a liquid heating medium without the packaging container becoming sloppy and/or unmanageable may be that the drop height of the liquid jets is too small for the liquid, on impact against the package, to possess sufficient kinetic energy to be able to penetrate in excessive amounts into the packaging material.
  • the liquid container or containers which may be tray- or box-shaped, are suitably replenished with new liquid heating medium at the same rate as it is consumed by seepage or free fall during heating and holding of the packed food in the heating zone and holding zone, respectively.
  • the tray- or box-shaped liquid containers display a perforated bottom through which the liquid heating medium may pass and, by force of gravity, run in thin liquid jets down onto the outer walls of the packaging container.
  • the liquid containers are configurated such that their foraminated or perforated bottom extends along substantially the entire transport distance of the packaging container through the heating zone and the holding zone in order to ensure the supply of heating medium throughout the entire stay-time of the packaging container in both of these zones.
  • the packaging container is produced from a packaging laminate comprising a core layer of paper or paperboard and outer layers of plastic on both sides of the core layer.
  • outer plastic layers use is made of polyethylene, preferably low density polyethylene, which is a readily available, cost efficient plastic which makes for mechanically strong sealing joints between opposing plastic layers by thermosealing during the production of the package.
  • the packaging laminate is supplemented with a layer of aluminium (Alifoil) between the core layer and the outer plastic layer which is intended to be turned to face inwards in the packaging container.
  • Alifoil aluminium
  • Examples of such materials for the additional layer may be selected from the group essentially comprising polyethylene terephthalate (PET), amorphous polyethylene terephthalate (APET), cyclic olefin copolymers (COC), nylon, polyamide (PA), amorphous polyamide (APA), liquid crystalline polymers (LCP), ethylene vinyl alcohol (EVOH), silica oxide (SiOx) and polyvinyl alcohol (PVOH).
  • PET polyethylene terephthalate
  • APET amorphous polyethylene terephthalate
  • COC cyclic olefin copolymers
  • PA polyamide
  • APA amorphous polyamide
  • LCP liquid crystalline polymers
  • EVOH ethylene vinyl alcohol
  • SiOx silica oxide
  • PVOH polyvinyl alcohol
  • a packaging container for use in the method according to the present invention may be produced from a sheet- or web-shaped blank of the packaging laminate in accordance with conventional forming/filling/sealing technology.
  • the packaging container is produced in that the blank is first reformed into an open tubular packaging carton in that both longitudinal edges of the blank are united to one another in an overlap seam or joint by thermosealing.
  • the one open end of the carton is closed by fold forming and sealing of the continuous foldable bottom panels of the blank, whereafter the carton is filled with the relevant product through the open top end of the carton.
  • the top end of the carton is closed by fold forming and sealing of the corresponding foldable top panels of the blank, for the formation of the finished, filled packaging container displaying a normally parallelepipedic geometric configuration.
  • the packaging container may be filled with both hot and cold product, even if the filling of particularly sensitive products, as was mentioned previously, is preferably carried out without preceding heat treatment of the product.
  • the packaging container or a grouping of packaging containers is fed in through the inlet in a treatment chamber or tunnel provided with inlet and outlet and through which the packaging container or grouping of packaging containers, respectively, is in sequence transported through a heating zone, a holding zone and a cooling zone prior to removal through the outlet for further transport and handling.
  • the treatment chamber may be a continuously operating tunnel comprising one or more endless conveyor belts with the aid of which the filled packaging containers are conveyed in sequence through the above mentioned treatment zones. If a plurality of conveyor belts is utilised, these may be positioned in parallel with one another and/or superposed over one another.
  • the treatment chamber may be designed as a continuously operating tunnel comprising a through-going path along which carriages filled with packaging containers are conveyed in sequence through the above-mentioned treatment zones.
  • the treatment chamber may be provided with a helical path along which the packaging containers are conveyed upwards and/or downwards during the heat treatment.
  • the packaging containers are conveyed first upwards along a helical path section and then downwards along a subsequent helical path section.
  • the packaging containers are preferably placed in such a manner that they are located very proximal to one another throughout the entire stay-time inside the treatment chamber.
  • adjacent packaging containers can be utilised to provide mutual support to one another during the transport through the chamber or the tunnel.
  • the filled packaging containers are transferred from the packing and filling machine to a treatment chamber disposed adjacent the packing and filling machine and carrying the generic reference numeral 10 and comprising a heating zone 11, a holding zone 12 and a cooling zone 13.
  • the packaging containers are ranked in groups 14 with an optional number of packages in each rank and with a short spacing between the ranks on an endless conveyor belt 15 which, via the infeed end 16 of the treatment chamber 10, conveys the ranked packaging containers into and through the heating zone 11.
  • the contents in the packaging containers are heated to the desired treatment temperature, e.g. 80-100 °C, by means of a liquid heating medium, preferably hot water.
  • the hot water is supplied in the form of fine jets (schematically illustrated by means of vertical straight dashes in the figure) which fall freely down onto the outer walls of the packages from a liquid container 17 disposed at but a short vertical distance above the packages in the heating zone 11.
  • the liquid container 17 may be tray- or box-shaped and preferably displays a horizontal perforated bottom with small perforations or holes through which the liquid medium may pass and, by force of gravity, run down onto the packages.
  • a horizontal perforated bottom with small perforations or holes through which the liquid medium may pass and, by force of gravity, run down onto the packages.
  • the packaging containers are conveyed further from the heating zone 11 into and through the holding zone 12 during the continued supply of liquid heating medium, preferably hot water.
  • the liquid heating medium is supplied in the form of fine jets (schematically illustrated by vertical straight dashes in the figure) which fall freely down on the outer walls of the packages from a liquid container 18 disposed but a short distance above the packages in the holding zone 12.
  • the liquid container 18, like the liquid container 17, may be tray- or box-shaped and preferably display a horizontal, perforated bottom with small perforations or holes through which the liquid medium seeps down onto the packages.
  • a horizontal, perforated bottom with small perforations or holes through which the liquid medium seeps down onto the packages.
  • the packaging containers are discharged through the discharge end 19 of the holding zone 12 in and through the cooling zone 13 of the treatment chamber 10 in which the hot contents in the packaging containers are cooled with the aid of cold water which, in a per se known manner, is sprayed or showered against the outer walls of the packaging containers through nozzles (not shown) along the path of movement of the conveyor belt through the cooling zone 13.
  • the packaging containers are removed from the treatment chamber 10 for further transport and handling.
  • the present invention has been described above with particular reference to a straight treatment chamber with endless conveyor belts for conveying the packaging containers therethrough, the present invention is not restricted to this particular type of treatment chamber. According to the present invention, other types of treatment chambers may also be employed, for example a treatment chamber with a helical conveyor path for the packaging containers, as has been described above.
  • the selection of treatment chamber is not critical to the present invention and may be determined, in each individual case, by for example the access to suitable equipment. With the guidance of the foregoing description, it would therefore be easy for the skilled reader of this specification to decide what type of treatment chamber or tunnel is suitable for the case in point.
  • packaging containers need, as in the described example, be placed directly on a conveyor belt, but could just as well be positioned in suitable groups or stacks above one another, such as on different shelf tops in a carriage provided with shelves. All modifications obvious to the skilled reader in the above described method according to the invention lie within the scope of the inventive concept, as this is defined in the appended Claims.
  • the method according to the present invention is applicable for packing a food, and heat treating the food for purposes of extending its shelf-life, in a packaging container consisting of a packaging laminate comprising a core layer of paper or paperboard and outer plastic coatings of polyethylene, preferably low density polyethylene, on both sides of the core layer.
  • the present invention is particularly advantageous for packing and heat treating, in such a manner, foods of a particularly heat-sensitive nature, e.g. diced tomatoes, green olives, raspberries and blackberries, as well as fruit in general, such as for instance pineapples, apples, citrus fruits, pears etc.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Polymers & Plastics (AREA)
  • Food Science & Technology (AREA)
  • Zoology (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Packages (AREA)

Abstract

L'invention concerne un procédé d'emballage et de traitement à chaud d'un aliment dans un récipient d'emballage (14) de papier enduit de plastique. Le récipient d'emballage est amené en séquence à traverser une zone de chauffage (11) où l'aliment est chauffé par de l'eau chaude, une zone de maintien (12) où l'aliment est maintenu à la température de traitement souhaitée par de l'eau chaude, et une zone de refroidissement (13) où l'aliment est refroidi avec de l'eau froide. Afin de ne pas endommager le récipient d'emballage (14), l'eau chaude est alimentée par percolation sous forme de petits jets d'eau sur les parois externes du récipient d'emballage.
PCT/SE2009/000422 2008-11-17 2009-09-25 Procédé d'emballage d'un aliment et son traitement à chaud aux fins d'allonger sa durée de conservation WO2010056175A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0802402 2008-11-17
SE0802402-8 2008-11-17

Publications (1)

Publication Number Publication Date
WO2010056175A1 true WO2010056175A1 (fr) 2010-05-20

Family

ID=42170145

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2009/000422 WO2010056175A1 (fr) 2008-11-17 2009-09-25 Procédé d'emballage d'un aliment et son traitement à chaud aux fins d'allonger sa durée de conservation

Country Status (2)

Country Link
AR (1) AR074197A1 (fr)
WO (1) WO2010056175A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105083646A (zh) * 2015-07-24 2015-11-25 安徽徽王食品有限公司 一种用于蘑菇酱杀菌流水线的罐体限位装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5772958A (en) * 1994-02-18 1998-06-30 Sander Hansen A/S Method and apparatus for the pasteurization of a continuous line of products
US6187097B1 (en) * 1997-04-23 2001-02-13 Krones Ag Device for spraying liquids onto containers
EP1122168A1 (fr) * 2000-02-02 2001-08-08 Shikoku Kakoki Co., Ltd. Procédé de moulage et de remplissage de récipients aseptiques
US20020073652A1 (en) * 2000-02-23 2002-06-20 Ulrich Wiedemann Bottling plant and method of operating a bottling plant and a bottling plant with sections for stabilizing the bottled product
EP1287751A2 (fr) * 2001-08-31 2003-03-05 Motoharu Takano Procédé et appareil pour chauffage sous pression
EP1525808A1 (fr) * 2003-10-21 2005-04-27 SIG Technology Ltd. Pasteurisateur à tunnel
EP1764005A1 (fr) * 2005-07-27 2007-03-21 Hoegger AG Dispositif et procédé de mise en oeuvre des traitements thermiques
SE529732C2 (sv) * 2006-03-21 2007-11-06 Tetra Laval Holdings & Finance Sätt att förpacka och i hållbarhetsförlängande syfte värmebehandla ett livsmedel

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5772958A (en) * 1994-02-18 1998-06-30 Sander Hansen A/S Method and apparatus for the pasteurization of a continuous line of products
US6187097B1 (en) * 1997-04-23 2001-02-13 Krones Ag Device for spraying liquids onto containers
EP1122168A1 (fr) * 2000-02-02 2001-08-08 Shikoku Kakoki Co., Ltd. Procédé de moulage et de remplissage de récipients aseptiques
US20020073652A1 (en) * 2000-02-23 2002-06-20 Ulrich Wiedemann Bottling plant and method of operating a bottling plant and a bottling plant with sections for stabilizing the bottled product
EP1287751A2 (fr) * 2001-08-31 2003-03-05 Motoharu Takano Procédé et appareil pour chauffage sous pression
EP1525808A1 (fr) * 2003-10-21 2005-04-27 SIG Technology Ltd. Pasteurisateur à tunnel
EP1764005A1 (fr) * 2005-07-27 2007-03-21 Hoegger AG Dispositif et procédé de mise en oeuvre des traitements thermiques
SE529732C2 (sv) * 2006-03-21 2007-11-06 Tetra Laval Holdings & Finance Sätt att förpacka och i hållbarhetsförlängande syfte värmebehandla ett livsmedel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105083646A (zh) * 2015-07-24 2015-11-25 安徽徽王食品有限公司 一种用于蘑菇酱杀菌流水线的罐体限位装置

Also Published As

Publication number Publication date
AR074197A1 (es) 2010-12-29

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