EP0032495A1 - Process and device for microbial stabilisation of products, particularly food products - Google Patents

Process and device for microbial stabilisation of products, particularly food products

Info

Publication number
EP0032495A1
EP0032495A1 EP80901411A EP80901411A EP0032495A1 EP 0032495 A1 EP0032495 A1 EP 0032495A1 EP 80901411 A EP80901411 A EP 80901411A EP 80901411 A EP80901411 A EP 80901411A EP 0032495 A1 EP0032495 A1 EP 0032495A1
Authority
EP
European Patent Office
Prior art keywords
products
packaging
infrared radiation
deleted
packages
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Withdrawn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
EP80901411A
Other languages
German (de)
French (fr)
Inventor
Robert Henri Gauthier
Raymonde Jeanne Blanche née FRECHOU GAUTHIER
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.)
GAUTHIER RAYMONDE JEANNE BLANCHE NEE FRECHOU
Original Assignee
GAUTHIER RAYMONDE JEANNE BLANCHE NEE FRECHOU
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 GAUTHIER RAYMONDE JEANNE BLANCHE NEE FRECHOU filed Critical GAUTHIER RAYMONDE JEANNE BLANCHE NEE FRECHOU
Publication of EP0032495A1 publication Critical patent/EP0032495A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A23L3/005—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment
    • A23L3/0055—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment with infrared rays

Definitions

  • the invention generally relates to a process and a device for microbial stabilization of products, and in particular of pasteurization, at least surface of food products or the like.
  • a microbial stabilization or product pasteurization technique is already known, which consists in subjecting products, whether or not contained tightly in plastic packaging or in other materials, with a radius of radius * eng * r ⁇ qg of appropriate wavelength and power determined for a determined time, depending on the type of products.
  • the external surface of the products absorbs part of the infrared radiation and is therefore heated before the internal part of the products.
  • the subject of the present invention is a new approach to the problem, making it possible to avoid any deterioration of the products or of the packages containing them, and also making it possible to use infrared radiation of greater power, for a longer time.
  • the invention provides a process for microbial stabilization of products, and in particular for pasteurization of food products, consisting in subjecting to an infrared radiation of length.
  • the inventio also proposes a device for carrying out this process, which is characterized in that it comprises means for cooling the
  • FIG. 1 schematically represents the principle of the method according to the invention, applied to a product contained in a sealed manner in a packaging made of material flexible plastic;
  • FIG. 2 schematically shows the principle of the method according to the invention, applied to unpackaged products, but housed or enclosed between two mobile screens or not;
  • FIG 3 is a schematic cross-sectional view of a device according to the invention, appliq in the case of products contained in sealed packages Best ways of making. the invention;
  • any product 10 which can be a food or other product, which is contained in a sealed package 11 of flexible plastic material, at least partially transparent to infrared radiation.
  • the packaging 11 is closed tightly around the product 10, for example by welding, as indicated diagrammatically at 12.
  • the product 10 contained in the package 11 undergoes microbial stabilization or pasteurisation in the case of products food being subjected to infrared radiation of suitable wavelength.
  • this infrared radiation has been represented schematically by the arrows 13 in dotted lines. This infrared radiation passes through the packaging 11, being only partially or weakly absorbed, and reaches the product 10 which absorbs it almost completely.
  • the partial absorption of infrared radiation by the packaging 11 results in heating of this packaging, and therefore in its expansion.
  • the absorption of infrared radiation by the product 10 results in heating of the product and therefore in microbial stabilization or pasteurization.
  • gas and humidity contained in product 10 are released from this product, due to heating, and come to fill and inflate the packaging 11. When the pressure becomes too high, it may burst or to tear apart.
  • the inks of the patterns or of the inscriptions printed on the external surface of the packaging 11 are poorly resistant to the rise in temperature, as is the packaging.
  • the method according to the invention consists in cooling the packaging 11, by any appropriate means, and advantageously by forced circulation of a cold fluid, such as air, as indicated by the arrows 14. This circulation of cold air on the packaging 11 prevents any significant rise in temperature of this packaging, and moreover causes condensation of the water vapor produced inside the packaging by heating the product 10.
  • the swelling of the packaging is thus extremely considerably reduced, and good protection of the film and of the inks deposited on the external surface of the packaging is obtained.
  • FIG 2 there is shown schematically another application of the method according to the invention.
  • the products 15 are not contained in sealed packages, but are simply clamped between two screens 16, which are for example mobile, and which make it possible to move the products 15 from one end to the other of the enclosure or the treatment device, while protecting them from external environments.
  • These screens 16 ' are made of suitable material, which is also at least partially transparent to. " infrared radiation.
  • the invention therefore consists in this case in cooling the screens 16, by a circulation of cold fluid, such as air, represented schematically by the arrows 18 in solid lines. It will be understood that it is also possible to circulate the air froi between the two screens 16, as indicated by the arrow 19 in Figure 3 'a device is schematically shown according to the invention.
  • This device allows microbial stabilization or pasteurization of products 20 contained in sealed packages 21, for example of flexible plastic material, at least partially transparent to infrared radiation.
  • the device essentially comprises a longitudinal enclosure 22, which is axially traversed by a conveyor 23 carrying the products 20 contained in the packages 21.
  • this conveyor 23 can be of the conveyor belt type formed by a mesh or the like.
  • the conveyor 23 passes between two rows, respecti ⁇ vely lower 24 and upper 25 of tubes or lamps emitting infrared radiation.
  • a part of the enclosure 22, for example the bottom of the latter i comprises openings 26 for entering the outside air.
  • the upper part of the enclosure 22 in this case comprises orifices 27 in which suction fans 28 are mounted.

Landscapes

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

Abstract

L'invention concerne un procede et un dispositif de stabilisation microbienne ou de pasteurisation de produits. L'invention consiste a soumettre un produit 10, enferme dans un emballage etanche 11, a un rayonnement infrarouge 13, et a refroidir l'emballage 11 au moyen d'une circulation 14 d'un fluide froid, tel que de l'air. L'invention concerne la stabilisation microbienne ou la pasteurisation des produits, contenus ou non dans des emballages etanches.The invention relates to a method and a device for microbial stabilization or pasteurization of products. The invention consists of subjecting a product 10, enclosed in a sealed packaging 11, to infrared radiation 13, and of cooling the packaging 11 by means of a circulation 14 of a cold fluid, such as air. The invention relates to the microbial stabilization or pasteurization of products, whether or not contained in sealed packaging.

Description

Titre de l'invention :Title of the invention:
PROCEDE ET DISPOSITIF DE STABILISATION MICROBIENNE DE PRODUITS, EN PARTICULIER DE.PRODUITS ALIMENTAIRES Domaine Technique : L'invention concerne généralement un procédé et un dispositif de stabilisation microbienne de produits, et en particulier de pasteurisation, au moins superficielle de produits alimentaires ou analogues. Technique antérieure ; On connaît déjà une.technique de stabilisation microbienne ou de pasteurisation de produits qui consiste à soumettre des produits, contenus ou non de façon étan- che dans des emballages plastiques ou en'autres matières, à rayonπemaitin*fra*rσqg delongueur d'onde appropriée et de puissance déterminée pendant un temps déterminé, en fonction du type des produits.METHOD AND DEVICE FOR MICROBIAL STABILIZATION OF PRODUCTS, PARTICULARLY OF . FOOD PRODUCTS Technical Field: The invention generally relates to a process and a device for microbial stabilization of products, and in particular of pasteurization, at least surface of food products or the like. Prior art; A microbial stabilization or product pasteurization technique is already known, which consists in subjecting products, whether or not contained tightly in plastic packaging or in other materials, with a radius of radius * eng * rσqg of appropriate wavelength and power determined for a determined time, depending on the type of products.
Lorsqu'il s'agit de produits qui ne sont pas con¬ tenus dans des emballages, la surface extérieure des produits absorbe une partie du rayonnement infrarouge et est donc chauffée avant la partie interne des produits, Lorsqu'on veut chauffer de façon correcte la partie interne des produits, il est nécessaire de chauffer de façon relativement importante la couche externe des produits, qui risque alors de subir des détériorations. Pour éviter cette détérioration, on est conduit à sou¬ mettre les produits à un rayonnement infrarouge de puissance relativement faible, pendant un temps rela¬ tivement important. Ces précautions ne permettent pas toujours d'éviter une détérioration de la couche extern des produits, et on est ainsi conduit à chauffer les produits de façon à obtenir une stabilisation microbien uniquement en surface, la partie interne n'étant que partiellement stabilisée ou pas du tout.In the case of products which are not contained in packaging, the external surface of the products absorbs part of the infrared radiation and is therefore heated before the internal part of the products. When it is desired to heat the internal part of the products, it is necessary to heat the external layer of the products to a relatively large extent, which then risks being damaged. To avoid this deterioration, it is necessary to subject the products to infrared radiation of relatively low power, for a relatively long time. These precautions do not allow always to avoid deterioration of the external layer of the products, and one is thus led to heat the products so as to obtain microbial stabilization only on the surface, the internal part being only partially stabilized or not at all.
Lorsque les produits sont contenus de façon étanch dans des emballages de matériau plastique d'aluminium ou autre, qui sont au moins partiellement transparents au rayonnement infrarouge utilisé, la quantité de rayonnement infrarouge absorbée par l'emballage se traduit par une dilatation de celui-ci. De plus, le produit contenu d'ans l'emballage absorbe le rayonnement infrarouge et est donc chauffé. Ce chauffage se traduit souvent par un dégazage du produit, les gaz contenus dans ce produit s'échappant à l'intérieur de l'emballag et l'humidité du produit étant transformée en vapeur d' qui vient gonfler l'emballage. On assite donc simultané ment à une dilatation et à un gonflement de l'emballage, ce qui est défavorable pour plusieurs raisons. En effet, les emballages sont en général imprimés sur leur surfac extérieure, et les encres résistent mal au chauffage et à la dilatation de l'emballage. De plus, si l'on utilis une puissance de chauffe relativement importante, la pression des gaz dans l'emballage peut augmenter jusqu' une valeur conduisant à l'éclatement ou à une déchirure partielle de l'emballage. Exposé de l'invention :When the products are tightly contained in packages of aluminum or other plastic material, which are at least partially transparent to the infrared radiation used, the amount of infrared radiation absorbed by the package results in its expansion. . In addition, the product content of years packaging absorbs infrared radiation and is thus heated. This heating often results in degassing of the product, the gases contained in this product escaping inside the packaging and the humidity of the product being transformed into vapor which inflates the packaging. So there is simultaneous expansion and swelling of the packaging, which is unfavorable for several reasons. In fact, the packages are generally printed on their outer surface, and the inks are poorly resistant to heating and to expansion of the package. In addition, if a relatively large heating power is used, the pressure of the gases in the packaging can increase up to a value leading to bursting or partial tearing of the packaging. Statement of the invention:
Pour éviter ces inconvénients, on s'est donc contenté jusqu'à présent de réduire la puissance du rayonnement .infrarouge utilisé, et d'augmenter la durée pendant laquelle les produits sont soumis à ce rayonne¬ mentTo avoid these drawbacks, we have thus far been content to reduce the power of the infrared radiation used, and to increase the period during which the products are subjected to this radiation.
La présente invention a pour objet une -approche nouvelle du problème, permettant d'éviter toutes dété- riorations des produits ou des emballages les contenant, et permettant également d'utiliser un rayonnement infra rouge de plus grande puissance, pendant un temps plus coThe subject of the present invention is a new approach to the problem, making it possible to avoid any deterioration of the products or of the packages containing them, and also making it possible to use infrared radiation of greater power, for a longer time.
( __ O Pour cela, l'invention propose un procédé de stabilisation microbienne de produits, et en particulier de pasteurisation de produits alimentaires, consistant à soumettre à un.rayonnement infrarouge de longueur(__ O For this, the invention provides a process for microbial stabilization of products, and in particular for pasteurization of food products, consisting in subjecting to an infrared radiation of length.
5 d'onde appropriée lesdits produits enveloppés ou non dans d.es emballages étanches en matériau au moins par¬ tiellement transparent au rayonnement infrarouge précité, caractérisé en ce qu'il consiste également à refroidir soit la surface extérieure desdits produits non emballés,5 suitable wave said products wrapped or not in waterproof packaging d.es material at least partially transparent to the aforementioned infrared radiation, characterized in that it also consists in cooling either the outer surface of said unpackaged products,
10 soit la surface extérieure des emballages contenant les¬ dits produits et à utiliser éventuellement un rayonnement infrarouge de puissance plus importante pendant un temps plus court.10 or the outer surface of the packages containing the said products and possibly using higher power infrared radiation for a shorter time.
Grâce à ce refroidissement de! la surface extérieureThanks to this cooling of! the outer surface
15 des produits ou des emballages les contenant, on évite respectivement, soit une détérioration de la couche superficielle des produits, soit une détérioration de l'emballage. Cette détérioration étant évitée, on peut bien entendu utiliser un rayonnement infrarouge de plus15 of the products or of the packages containing them, respectively, either a deterioration of the surface layer of the products or a deterioration of the packaging is avoided. This deterioration being avoided, it is of course possible to use infrared radiation in addition
20 grande puissance pendant un temps plus court, ce qui permet de réduire la longueur' des installations utilisées.20 large power for a shorter time, which allows to reduce the length 'of the installations used.
L'inventio propose également un dispositif pour l'exécution de ce procédé, qui est caractérisé en ce qu'il comprend des moyens de refroidissement de laThe inventio also proposes a device for carrying out this process, which is characterized in that it comprises means for cooling the
25 surface extérieure des produits non emballés, ou de la surface extérieure des emballages.-. Brève description des dessins :25 outer surface of unpackaged products, or the outer surface of packaging. Brief description of the drawings:
L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci appa-The invention will be better understood, and other objects, characteristics, details and advantages thereof appear.
30. raitront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés -uniquement à titre d'exemple illustrant deux modes de réalisation de l'invention, et dans lesquels :30 . will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given -only as an example illustrating two embodiments of the invention, and in which:
35 - la figure 1 représente schématiquement le principe du procédé selon l'invention, appliqué à un produit contenu de façon étanche dans un emballage en matériau plastique souple;FIG. 1 schematically represents the principle of the method according to the invention, applied to a product contained in a sealed manner in a packaging made of material flexible plastic;
- la figure 2 représente schématiquement le princ du procédé selon l'invention, appliqué à des produits non emballés, mais logés ou enserrés entre deux écrans mobiles ou non; et- Figure 2 schematically shows the principle of the method according to the invention, applied to unpackaged products, but housed or enclosed between two mobile screens or not; and
- la figure 3 est une vue schématique en coupe transversale d'un dispositif selon l'invention, appliq au cas de produits contenus dans des emballages étanch Meilleures manières de réaliser . l'invention ; En figure 1, on a donc représenté très schématiqu un produit quelconque 10,qui peut être un produit ali¬ mentaire ou autre, qui est contenu dans un emballage étanche 11 en matériau plastique souple, au moins partiellement transparent au rayonnement infrarouge. L'emballage 11 est fermé de façon étanche autour du produit 10, par exemple par soudure, comme indiqué schématiquement en 12.- Figure 3 is a schematic cross-sectional view of a device according to the invention, appliq in the case of products contained in sealed packages Best ways of making. the invention; In Figure 1, there is therefore shown very schematically any product 10, which can be a food or other product, which is contained in a sealed package 11 of flexible plastic material, at least partially transparent to infrared radiation. The packaging 11 is closed tightly around the product 10, for example by welding, as indicated diagrammatically at 12.
De façon classique, le produit 10 contenu dans l'emballage 11, subit une stabilisation microbienne ou une pasteurisation dans le cas des produits' alimentaire en étant soumis à un rayonnement infrarouge de longueur d'onde appropriée. Sur le dessin, ce rayonnement infra¬ rouge à été représenté schématiquement par les flèches 13 en pointillés. Ce rayonnement infrarouge traverse 1'emballage 11 , en n'étant que partiellement ou faiblement absorbé, et atteint le produit 10 qui l'absorbe à peu près complè¬ tement.Conventionally, the product 10 contained in the package 11, undergoes microbial stabilization or pasteurisation in the case of products food being subjected to infrared radiation of suitable wavelength. In the drawing, this infrared radiation has been represented schematically by the arrows 13 in dotted lines. This infrared radiation passes through the packaging 11, being only partially or weakly absorbed, and reaches the product 10 which absorbs it almost completely.
Comme indiqué plus haut, l'absorption partielle du rayonnement infrarouge par l'emballage 11 se traduit par un échauffement de cet emballage, et donc par sa dilatation. De même, l'absorption de rayonnement infra¬ rouge par le produit 10 se traduit par un chauffage du produit et donc par une stabilisation microbienne ou une pasteurisation. Toutefois, dans la technique antérieure, les gaz et l'humidité contenus dans le produit 10 se dégagent de ce produit, en raison du chauffage, et viennent remplir et gonfler l'emballage 11. Quand la pression devient trop importante, celui-ci risque d'éclater ou de se déchirer.As indicated above, the partial absorption of infrared radiation by the packaging 11 results in heating of this packaging, and therefore in its expansion. Similarly, the absorption of infrared radiation by the product 10 results in heating of the product and therefore in microbial stabilization or pasteurization. However, in the technique gas and humidity contained in product 10 are released from this product, due to heating, and come to fill and inflate the packaging 11. When the pressure becomes too high, it may burst or to tear apart.
De plus, les encres des motifs ou des inscriptions imprimés sur la surface extérieure de l'emballage 11, résistent mal à l'élévation de température, de même que l'emballage. Le procédé selon l'invention consiste à refroidir l'emballage 11, par tous moyens appropriés, et avanta¬ geusement par une circulation forcée d'un fluide froid, tel que de..l'air, comme indiqué par les flèches 14. Cette circulation d'air froid sur l'emballage 11 évite toute élévation sensible de température de cet emballa¬ ge, et provoque de plus une condensation de la vapeur d'eau produite à l'intérieur de l'emballage par le chauffage du produit 10.In addition, the inks of the patterns or of the inscriptions printed on the external surface of the packaging 11 are poorly resistant to the rise in temperature, as is the packaging. The method according to the invention consists in cooling the packaging 11, by any appropriate means, and advantageously by forced circulation of a cold fluid, such as air, as indicated by the arrows 14. This circulation of cold air on the packaging 11 prevents any significant rise in temperature of this packaging, and moreover causes condensation of the water vapor produced inside the packaging by heating the product 10.
On réduit ainsi de façon extrêmement importante le gonflement de l'emballage, et on obtient de plus une bonne protection de la pellicule et des encres déposées sur la surface extérieure de l'emballage.The swelling of the packaging is thus extremely considerably reduced, and good protection of the film and of the inks deposited on the external surface of the packaging is obtained.
En figure 2, on a représenté schématiquement une autre application du procédé selon l'invention. Dans cette application, les produits 15 ne sont pas contenus dans des emballages étanches, mais sont simple¬ ment serrés entre deux écrans 16, qui sont par exemple mobiles, et qui permettent de déplacer les produits 15 d'une extrémité à l'autre de l'enceinte ou de l'appareil de traitement, tout en les protégeant des ambiances extérieures. Ces écrans 16' sont réalisés en matériau approprié, qui est également au moins partiellement transparent au." rayonnement infrarouge. Les deux écrans mobiles 16, de forme appropriéeenserrant entre eux les produits 15, défilent entre des rangées d'émetteur deIn Figure 2, there is shown schematically another application of the method according to the invention. In this application, the products 15 are not contained in sealed packages, but are simply clamped between two screens 16, which are for example mobile, and which make it possible to move the products 15 from one end to the other of the enclosure or the treatment device, while protecting them from external environments. These screens 16 ' are made of suitable material, which is also at least partially transparent to. " infrared radiation. The two mobile screens 16, of appropriate shape enclosing the products 15 between them, pass between rows of transmitter
OMPI rayonnement infrarouge, et sont donc soumis extérieurem à un rayonnement infrarouge représenté schématiquement par les flèches 17 en pointillés. Le rayonnement infra¬ rouge traverse donc les écrans 16, en étant peu ou fai- blement absorbé, et est ensuite absorbé par les produit 15. L'absorption du rayonnement infrarouge par les écra 16 se traduit par un échauffement de ceux-ci qui est désavantageux. . L'invention consiste donc dans ce cas à refroidir les écrans 16, par une circulation de fluide froid, tel que de l'air, représenté schématiquem par les flèches 18 en traits pleins. On comprend qu'il est également possible de faire circuler de l'air froi entre les deux écrans 16, comme indiqué par la flèche 19 En figure 3» on a représenté schématiquement un dispositif selon l'invention.WIPO infrared radiation, and are therefore subjected externally to infrared radiation represented schematically by the arrows 17 in dotted lines. The infrared radiation therefore crosses the screens 16, being little or weakly absorbed, and is then absorbed by the products 15. The absorption of the infrared radiation by the screens 16 results in a heating of these which is disadvantageous. . The invention therefore consists in this case in cooling the screens 16, by a circulation of cold fluid, such as air, represented schematically by the arrows 18 in solid lines. It will be understood that it is also possible to circulate the air froi between the two screens 16, as indicated by the arrow 19 in Figure 3 'a device is schematically shown according to the invention.
Ce dispositif permet la stabilisation microbienne ou la pasteurisation, de produits 20 contenus dans des emballages étanches 21, par exemple de matériau plastiqu souple, au moins partiellement transparent au rayonnemen infrarouge.This device allows microbial stabilization or pasteurization of products 20 contained in sealed packages 21, for example of flexible plastic material, at least partially transparent to infrared radiation.
Le dispositif comprend essentiellement une enceinte longitudinale 22, qui est traversée axialement par un, convoyeur 23 portant les produits 20 contenus dans les emballages 21. Avantageusement, ce convoyeur 23 peut être du type à bande transporteuse formée par un grillage ou analogue Le convoyeur 23 passe entre deux rangées, respecti¬ vement inférieure 24 et supérieure 25 de tubes ou lampes émetteurs de rayonnement infrarouge. Selon l'invention, une partie de l'enceinte 22,par exemple le fond de celle-ci i comprend des ouvertures 26 d'entrée d'air extérieur.The device essentially comprises a longitudinal enclosure 22, which is axially traversed by a conveyor 23 carrying the products 20 contained in the packages 21. Advantageously, this conveyor 23 can be of the conveyor belt type formed by a mesh or the like. The conveyor 23 passes between two rows, respecti¬ vely lower 24 and upper 25 of tubes or lamps emitting infrared radiation. According to the invention, a part of the enclosure 22, for example the bottom of the latter i comprises openings 26 for entering the outside air.
La partie supérieure de l'enceinte 22 comprend dans ce cas des orifices 27 dans lesquels sont montés des ventilateurs aspirants 28. The upper part of the enclosure 22 in this case comprises orifices 27 in which suction fans 28 are mounted.

Claims

reçues par e ur . .7Le fonctionnement de ces ventilateurs 28 provoque une aspiration de l'air contenu dans l'enceinte 22, donc une entrée d'air extérieur dans l'enceinte par les ouvertures 26, et une cirpulation d'air autour des emballages 21 passant sur le convoyeur 23 entre les deux rangées 24 et 25 de tubes émetteurs de rayonnement infrarouge. Cette circulation d'air refroidit les emba¬ llages 21 , et empêche leur détérioration et leur gonfle¬ ment,comme indiqué plus haut. Du fait que toute détérioration des produits et/ou des emballages est évitée selon l'invention, on peut donc utiliser..- un rayonnement infrarouge de puissance plus importante. Cette plus grande puissance de rayonnement infrarouge permet de réduire le temps pendant lequel les produits et/ou les emballages sont soumis à ce rayonnement, et donc, de réduire la longueur du disposi¬ tif selon l'invention.Ou bien, lorsqu'on utilise un dispositif de même longueur qu'auparavant, c'est-à-dire que les produits sont soumis au rayonnement infrarouge pendant le même temps qu'auparavant, l'utilisation d'une puissance de rayonnement plus importante permet d'améliorer la stabilisation ou la pasteurisation des produits.Bien entendu, l'invention n'est nullement limitée aux modes de réalisation décrits et représentés qui n'ont été donnés qu'à titre d'exemple. En particulier, elle comprend tous les moyens constituant des équivalents techniques des moyens décrits, ainsi que leurs combinai¬ sons, si celles-ci sont exécutées suivant son esprit et mises en oeuvre dans le cadre des revendications qui suivent. Revendications de "brevet received by e ur. .7 The operation of these fans 28 causes a suction of the air contained in the enclosure 22, therefore an entry of outside air into the enclosure through the openings 26, and an air circulation around the packages 21 passing over the conveyor 23 between the two rows 24 and 25 of tubes emitting infrared radiation. This circulation of air cools the packages 21, and prevents their deterioration and their swelling, as indicated above. Because any deterioration of the products and / or packaging is avoided according to the invention, it is therefore possible to use ..- infrared radiation of greater power. This greater power of infrared radiation makes it possible to reduce the time during which the products and / or the packages are subjected to this radiation, and therefore, to reduce the length of the device according to the invention. Or, when using a device of the same length as before, that is to say that the products are subjected to infrared radiation for the same time as before, the use of a higher radiation power makes it possible to improve the stabilization or the pasteurization of products. Of course, the invention is in no way limited to the embodiments described and shown which have been given only by way of example. In particular, it includes all the means constituting technical equivalents of the means described, as well as their combinai¬ sounds, if these are executed according to the spirit and implemented in the context of the claims which follow. "Patent Claims
1.-(modifiée) Procédé de stabilisation microbienne de produits emballés, et en particulier de pasteurisa¬ tion de produits alimentaires, consistant à soumettre les produits enveloppés dans des emballages étanches, à un rayonnement infrarouge de longueurs d'ondes appropriées, vis-à-vis desquelles le matériau des emballages est au moins partiellement transparent, caractérisé en ce qu'il consiste également à refroidir la surface extérieure desdits emballages contenant les produits ainsi que l'encre des impressions publi¬ citaires appliquée à cette surface et à contrôler la - température de cette surface, pour éviter toute 'éléva¬ tion sensible de la température de l'emballage et pour provoquer la condensation de la vapeur d'eau emprisonné dans les emballages, et à utiliser éventuellement un rayonnement infrarouge de puissance plus importante, pendant un temps plus court.1 .- (modified) Process for microbial stabilization of packaged products, and in particular for pasteurization of food products, consisting in subjecting the products wrapped in airtight packaging to infrared radiation of appropriate wavelengths, vis-à-vis - of which the packaging material is at least partially transparent, characterized in that it also consists in cooling the external surface of said packaging containing the products as well as the ink of the publicity printing applied to this surface and in controlling the - temperature of this surface, to avoid any appreciable éléva¬ tion temperature of the package and to cause water vapor condensation trapped in the packaging, and optionally use an infrared radiation greater power for a shorter time.
2.-(modifiée) Procédé selon la revendication 1, caractérisé en ce qu'il consiste à -refroidir la surface extérieure de l'emballage précité au moyen d'une cir¬ culation d'un fluide froid, orientée parallèlement ou perpendicul irement par rapport au plan sur laquelle les produits sont disposés; ces produits pouvant être en mouvement d'avancement.2 .- (modified) Method according to claim 1, characterized in that it consists in -cooling the outer surface of the aforementioned packaging by means of a circulation of a cold fluid, oriented parallel or perpendicularly by relation to the plan on which the products are placed; these products may be moving forward.
3.-(Supprimée)3 .- (Deleted)
4 -(Supprimée)4 - (Deleted)
5.-(Supprimée)5 .- (Deleted)
OMPI WIPO
DECLARATIONSELONL'ARTICLE19DECLARATIONS UNDER ARTICLE 19
La nouvelle revendication 1 correspond à la revendication 1 d'origine, mais est limitée au traitement de produits emballés. La nouvelle revendication 2 correspond à3a revendication 2 d'origine, en ce qui concerne le fond ; les revendications 3 à 5 ont été supprimées. New claim 1 corresponds to original claim 1, but is limited to the processing of packaged products. The new claim 2 corresponds to the original claim 2, as regards the substance; claims 3 to 5 have been deleted.
EP80901411A 1979-07-25 1981-02-09 Process and device for microbial stabilisation of products, particularly food products Withdrawn EP0032495A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7919181A FR2462107A1 (en) 1979-07-25 1979-07-25 METHOD AND DEVICE FOR MICROBIAL STABILIZATION OF PRODUCTS, ESPECIALLY FOOD PRODUCTS
FR7919181 1979-07-25

Publications (1)

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EP0032495A1 true EP0032495A1 (en) 1981-07-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP80901411A Withdrawn EP0032495A1 (en) 1979-07-25 1981-02-09 Process and device for microbial stabilisation of products, particularly food products

Country Status (6)

Country Link
EP (1) EP0032495A1 (en)
BE (1) BE884429A (en)
ES (1) ES8200551A1 (en)
FR (1) FR2462107A1 (en)
IT (1) IT1141725B (en)
WO (1) WO1981000192A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2565787B1 (en) * 1984-06-13 1989-01-06 Rebours Ets PROCESS FOR THE PRESERVATION OF HARD AND SHELLED EGGS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH288407A (en) * 1951-04-23 1953-01-31 Guetlin Willy Method for pest control on food and luxury foods.
US3003409A (en) * 1959-05-01 1961-10-10 Reflectotherm Inc Ultra-long wavelength infrared radiant heating oven
US3682643A (en) * 1969-07-15 1972-08-08 Lawrence H Foster Method for cooking foods using infrared radiation
US3614365A (en) * 1969-09-19 1971-10-19 Hunt Wesson Foods Inc Apparatus for cooking bacon and other meat products by microwave energy

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8100192A1 *

Also Published As

Publication number Publication date
WO1981000192A1 (en) 1981-02-05
ES493746A0 (en) 1981-11-16
FR2462107A1 (en) 1981-02-13
IT8046868A0 (en) 1980-07-25
BE884429A (en) 1980-11-17
IT1141725B (en) 1986-10-08
ES8200551A1 (en) 1981-11-16

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