EP0199716A1 - Isothermic package. - Google Patents

Isothermic package.

Info

Publication number
EP0199716A1
EP0199716A1 EP84903944A EP84903944A EP0199716A1 EP 0199716 A1 EP0199716 A1 EP 0199716A1 EP 84903944 A EP84903944 A EP 84903944A EP 84903944 A EP84903944 A EP 84903944A EP 0199716 A1 EP0199716 A1 EP 0199716A1
Authority
EP
European Patent Office
Prior art keywords
sheets
packaging according
fluid
space
walls
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.)
Granted
Application number
EP84903944A
Other languages
German (de)
French (fr)
Other versions
EP0199716B1 (en
Inventor
Jean-Pierre Weber
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT84903944T priority Critical patent/ATE53812T1/en
Publication of EP0199716A1 publication Critical patent/EP0199716A1/en
Application granted granted Critical
Publication of EP0199716B1 publication Critical patent/EP0199716B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/38—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation
    • B65D81/3888—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation wrappers or flexible containers, e.g. pouches, bags
    • B65D81/3897—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents with thermal insulation wrappers or flexible containers, e.g. pouches, bags formed of different materials, e.g. laminated or foam filling between walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined

Definitions

  • Isothermal packaging which makes it possible to maintain hot or cold food products at an acceptable temperature for a certain period of time.
  • These packaging are generally used to transport a hot or cold product from the place where it is bought to the place where it is consumed or to the place (fridges, freezers, etc.) where it is kept or stored before being consumed .
  • the subject of the present invention is an isothermal packaging which makes it possible at least to double, whatever conditions and proportions are kept, the time during which the product is maintained at an acceptable temperature, that is to say lying above or below. depending on the case of the critical temperature.
  • This packaging which is constituted by an envelope provided with an opening for the introduction and the withdrawal of the product, is characterized in that the walls of the envelope are each formed of several sheets delimiting between them at least one closed space. filled with a fluid.
  • the attached drawing shows schematically and by way of nonlimiting example an embodiment of the object of the invention and illustrates a method of manufacturing this embodiment of the packaging according to the invention.
  • Figure 1 is a plan view of the empty packaging.
  • Figure 2 is a section through line II-II of the figure similar to Figure 2, of the package containing a product.
  • Figure 4 / Figures 5 to 9 illustrate the various operations of the manufacturing process of this packaging.
  • the packaging shown in FIGS. 1 to 4 consists of a flat, flexible envelope 10, of rectangular shape, the two walls 11 and 12 of which are welded on three sides so as to provide an opening 13 for the introduction and removal of the product.
  • the walls 11 and 12 are each provided with two sheets 14, 15 which limit between them pockets 16 and 17 filled with air or a gas with low heat transmission power at a pressure slightly higher than atmospheric pressure.
  • the pockets 16 and 17 are connected together, on the side opposite to the opening 13 by a passage 18.
  • the sheets 14, 15, which are found in the c ⁇ merce, are constituted by a plastic layer 19 and by a metallized layer 20.
  • the product to be transported is introduced into the packaging through the opening 13 then the envelope is wound from this opening until the product is well held, then the wound part is fixed with one or two clips optionally with ad hoc closing means incorporated or not in the packaging, these means being able to be equipped with a gripping device.
  • the thickness of the air layer increases more or less depending on the volume of the product.
  • the thermal barrier formed by this layer of air and by the double thickness of the walls they are made up of isothermal sheets allows products transported or stored to be kept for several hours at temperatures close to their conservation temperatures. It will be noted that this thermal barrier does not present a solution of continuity at the bottom of the packaging thanks to the passage 18. This is particularly important in view of the fact that the bottom of known isothermal packaging is generally the place where the heat exchanges - from outside to inside or vice versa - are the largest.
  • the isothermal packaging thus produced may be stored in refrigerated enclosures before being used so as to make it possible to significantly extend the period during which the product. is kept at an acceptable temperature.
  • the packaging manufacturing process illustrated in Figures 5 to 9 is particularly economical.
  • This process consists of superimposing these two sheets, plastic layer against plastic layer, by coinciding from two rectangular sheets of the type represented in FIG. 4, one of which A is longer and wider than the other B (FIG. 5). their short sides and forming a corrugation C to absorb the excess length of the sheet A (figure 6), to heat weld the two sheets along strips D (figure 7), to fold one against the other the two halves of the two sheets thus welded (fig. 8), to heat weld the corresponding edges E of the sheet A, to blow during this last operation air or a suitable gas in the pockets 16 and 18 in formation .
  • the welding operations can be grouped together (fig. 7 and 9) in a single operation after having folded down, by positioning them suitably, the two sheets A and B (fig. 8).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Air Bags (AREA)

Abstract

PCT No. PCT/CH84/00174 Sec. 371 Date Aug. 26, 1986 Sec. 102(e) Date Aug. 26, 1986 PCT Filed Oct. 30, 1984 PCT Pub. No. WO86/02619 PCT Pub. Date May 9, 1986.The isothermic package is comprised of a flat and flexible envelope (10) of which the two walls (11, 12) are welded along three sides so as to provide an opening (13) for introducing and withdrawing the product (P) to be kept warm or cold during its transportation. The walls (11, 12) are each comprised of two isothermic sheets (14, 15) which delimit therebetween a spaced (16, 17, 18) filled with a gas having a low heat transmission power.

Description

EMBALLAGE ISOTHERMIQUE ISOTHERMAL PACKAGING
On connait des emballages isothermiques qui permettent de maintenir durant un certain intervalle de temps des produits alimentaires chauds ou froids à une température acceptable.Isothermal packaging is known which makes it possible to maintain hot or cold food products at an acceptable temperature for a certain period of time.
Ces emballages sont généralement utilisés pour transporter un produit chaud ou froid du lieu où il est acheté à l'endroit où il est consammé ou à l'endroit (frigos, congélateurs, etc.) où il est gardé ou stocké avant d'être consommé.These packaging are generally used to transport a hot or cold product from the place where it is bought to the place where it is consumed or to the place (fridges, freezers, etc.) where it is kept or stored before being consumed .
Malheureusement ces emballages n'offrent pas une barrière thermique satisfaisante lorsque les températures ambiantes dépassent les normes habituelles ou si la durée du transport est relativement longue. Dans ce cas, la température du produit atteint, durant le transport, une température critique à partir de laquelle son aspect, ses qualités, son goût s'altèrent de sorte qu'il devient impropre à la consommation. La présente invention a pour objet un emballage isothermique qui permet au moins de doubler, toutes conditions et proportions gardées, la durée pendant laquelle le produit est maintenu à une température acceptable, c'est-à-dire se situant au dessus ou au-dessous selon le cas de la température critique.Unfortunately, these packages do not offer a satisfactory thermal barrier when the ambient temperatures exceed the usual standards or if the duration of transport is relatively long. In this case, the temperature of the product reaches, during transport, a critical temperature from which its appearance, its qualities, its taste deteriorate so that it becomes unfit for consumption. The subject of the present invention is an isothermal packaging which makes it possible at least to double, whatever conditions and proportions are kept, the time during which the product is maintained at an acceptable temperature, that is to say lying above or below. depending on the case of the critical temperature.
Cet emballage, qui est constitué par une enveloppe dotée d'une ouverture pour l'introduction et le retrait du produit, est caractérisé par le fait que les parois de l'enveloppe sont formées chacune de plusieurs feuilles délimitant entre elles au moins un espace fermé rempli d'un fluide. Le dessin ci-annexé représente schématiquement et à titre d'exemple non limitatif une forme d'exécution de l'objet de l'invention et illustre un procédé de fabrication de cette forme d'exécution de l'emballage selon l'invention. La figure 1 est une vue en plan de l'ertballage vide. La figure 2 en est une section par la ligne II-II de la figure g u e analogue à la figure 2, de l'emballage contenant un produit. La figure 4 / Les figures 5 à 9 illustrent les diverses opérations du procédé de fabrication de cet emballage.This packaging, which is constituted by an envelope provided with an opening for the introduction and the withdrawal of the product, is characterized in that the walls of the envelope are each formed of several sheets delimiting between them at least one closed space. filled with a fluid. The attached drawing shows schematically and by way of nonlimiting example an embodiment of the object of the invention and illustrates a method of manufacturing this embodiment of the packaging according to the invention. Figure 1 is a plan view of the empty packaging. Figure 2 is a section through line II-II of the figure similar to Figure 2, of the package containing a product. Figure 4 / Figures 5 to 9 illustrate the various operations of the manufacturing process of this packaging.
L'emballage représenté aux figures 1 à 4 est constitué par une enveloppe plate, souple 10, de forme rectangulaire, dont les deux parois 11 et 12 sont soudées sur trois côtés de manière à ménager une ouverture 13 peur l'introduction et le retrait du produit.The packaging shown in FIGS. 1 to 4 consists of a flat, flexible envelope 10, of rectangular shape, the two walls 11 and 12 of which are welded on three sides so as to provide an opening 13 for the introduction and removal of the product.
Les parois 11 et 12 se c o m p o s e n t chacune de deux feuilles 14, 15 qui limitent entre elles des poches 16 et 17 remplies d'air ou d'un gaz à faible pouvoir de transmission de chaleur à une pression légèrement supérieure à la pression atmosphérique.The walls 11 and 12 are each provided with two sheets 14, 15 which limit between them pockets 16 and 17 filled with air or a gas with low heat transmission power at a pressure slightly higher than atmospheric pressure.
Les poches 16 et 17 sont reliées entre elles, du côté opposé à l'ouverture 13 par un passage 18.The pockets 16 and 17 are connected together, on the side opposite to the opening 13 by a passage 18.
Les feuilles 14, 15, que l'on trouve dans le cαπmerce, sont constituées par une couche de matière plastique 19 et par une couche métallisée 20. Le produit à transporter est introduit dans l'emballage à travers l'ouverture 13 puis l'enveloppe est enroulée à partir de cette ouverture jusqu'à ce que le produit soit bien tenu, puis la partie enroulée est fixée avec un ou deux clips éventuellement avec des moyens de fermeture ad hoc incorporés ou non à l'emballage, ces moyens pouvant être dotés d'un dispositif de préhension. Au cours de l'enroulement l'épaisseur de la couche d'air augmente plus ou moins selon le volume du produit.The sheets 14, 15, which are found in the cαπmerce, are constituted by a plastic layer 19 and by a metallized layer 20. The product to be transported is introduced into the packaging through the opening 13 then the envelope is wound from this opening until the product is well held, then the wound part is fixed with one or two clips optionally with ad hoc closing means incorporated or not in the packaging, these means being able to be equipped with a gripping device. During the winding the thickness of the air layer increases more or less depending on the volume of the product.
La barrière thermique formée par cette couche d'air et par la double épaisseur des parois elles mânes constituées par des feuilles isothermiques permet de maintenir plusieurs heures durant à des températures voisines de leurs leurs températures de conservation les produits transportés ou stockés. On remarquera que cette barrière thermique ne présente pas de solution de continuité au fond de l'emballage grâce au passage 18. Ceci est particulièrement important en regard du fait que le fond des emballages isothermiques connus est généralement l'endroit où les échanges de chaleur - de l'extérieur vers l'intérieur ou inversement - sont les plus grands. Dans une variante, on pourra remplacer l'air contenu dans les espaces 16,17 par un liquide, avantageusement par un liquide dit réfrigérant, analogue aux liquide utilisés dans les poches souples "ColdHo Pack" de 3 M dont le point de congélation est de l'ordre de - 18°C. Les emballages isothermiques ainsi réalisés pourront être stockés dans des enceintes réfrigérées avant d'être utilisés de manière à permettre de prolonger sensiblement la durée pendant laquelle le produit. est conservé à une température acceptable.The thermal barrier formed by this layer of air and by the double thickness of the walls they are made up of isothermal sheets allows products transported or stored to be kept for several hours at temperatures close to their conservation temperatures. It will be noted that this thermal barrier does not present a solution of continuity at the bottom of the packaging thanks to the passage 18. This is particularly important in view of the fact that the bottom of known isothermal packaging is generally the place where the heat exchanges - from outside to inside or vice versa - are the largest. In a variant, it is possible to replace the air contained in the spaces 16, 17 by a liquid, advantageously by a so-called cooling liquid, analogous to the liquid used in the flexible bags "ColdHo Pack" of 3M whose freezing point is the order of - 18 ° C. The isothermal packaging thus produced may be stored in refrigerated enclosures before being used so as to make it possible to significantly extend the period during which the product. is kept at an acceptable temperature.
Le procédé de fabrication de l'emballage illustré aux figures 5 à 9 est particulièrement économique .The packaging manufacturing process illustrated in Figures 5 to 9 is particularly economical.
Ce procédé consiste à partir de deux feuilles rectangulaires du type représenté à la figure 4, dont l'une A est plus longue et large que l'autre B (figure 5) à superposer ces deux feuilles, couche plastique contre couche plastique en faisant coïncider leurs petits côtés et en formant une ondulation C pour absorber l'excédent de longueur de la feuille A (figure 6), à souder à chaud les deux feuilles le long de bandes D (figure 7), à rabattre l'une contre l'autre les deux moitiés des deux feuilles ainsi soudées (fig. 8), à souder à chaud les bords correspondants E de la feuille A, à insuffler durant cette dernière opération de l'air ou un gaz approprié dans les Poches 16 et 18 en formation.This process consists of superimposing these two sheets, plastic layer against plastic layer, by coinciding from two rectangular sheets of the type represented in FIG. 4, one of which A is longer and wider than the other B (FIG. 5). their short sides and forming a corrugation C to absorb the excess length of the sheet A (figure 6), to heat weld the two sheets along strips D (figure 7), to fold one against the other the two halves of the two sheets thus welded (fig. 8), to heat weld the corresponding edges E of the sheet A, to blow during this last operation air or a suitable gas in the pockets 16 and 18 in formation .
Dans une variante de ce procédé, on pourra regrouper les opérations de soudage (fig. 7 et 9) en ung seule opération après avoir rabattu, en les positionnant convenableanent, les deux feuilles A et B (fig. 8). In a variant of this process, the welding operations can be grouped together (fig. 7 and 9) in a single operation after having folded down, by positioning them suitably, the two sheets A and B (fig. 8).

Claims

REVENDICATIONS
1. Emballage isothermique constitué par une enveloppe souple présentant une ouverture pour l'introduction du produit, caractérisé par le fait que les parois (11,12) de cette enveloppe (10) se composent d'au moins deux feuilles (14,15) qui délimitent entre elles au moins un espace (16-17) rempli d'un fluide.1. Isothermal packaging consisting of a flexible envelope having an opening for the introduction of the product, characterized in that the walls (11,12) of this envelope (10) consist of at least two sheets (14,15) which delimit between them at least one space (16-17) filled with a fluid.
2. Emballage selon la revendication 1, caractérisé par le fait que ledit espace; (16,17) forme une barrière thermique ne présentant pas, au niveau du fond, de solution de continuité.2. Packaging according to claim 1, characterized in that said space; (16,17) forms a thermal barrier having no continuity solution at the bottom.
3. Emballage selon la revendication 2 dont l'enveloppe est formée de deux parois (11,12) soudées ou collées à plat , caractérisé par le fait que ces parois (11,12) se cαnposent de deux feuilles (14,15) délimitant deux espaces (16,17) reliés par un passage (18) situé à l'opposé de l'ouverture (13) pour l'introduction et le retrait du produit.3. Packaging according to claim 2, the envelope is formed of two walls (11,12) welded or glued flat, characterized in that these walls (11,12) are cαnposent two sheets (14,15) defining two spaces (16,17) connected by a passage (18) located opposite the opening (13) for the introduction and withdrawal of the product.
4. Emballage selon la revendication 1, caractérisé par le fait que lesdites feuilles (14,15) sont constituées par une couche de matière plastique (19) et une couche métallisée (20) et sont soudées à chaud.4. Packaging according to claim 1, characterized in that said sheets (14,15) are constituted by a plastic layer (19) and a metallized layer (20) and are heat welded.
5. Emballage selon la revendication 1, caractérisé par le fait que ledit fluide est un gaz.5. Packaging according to claim 1, characterized in that said fluid is a gas.
6. Emballage selon la revendication 1, caractérisé par le fait que ledit fluide est un liquide.6. Packaging according to claim 1, characterized in that said fluid is a liquid.
7. Emballage selon la revendication 6, caractérisé par le fait que ledit liquide a un point de solidification inférieur à 0ºC.7. Packaging according to claim 6, characterized in that said liquid has a solidification point less than 0ºC.
8. Procédé de fabrication d'un anballage selon la revendication 3 , caractérisé en ce qu'il consiste à partir de deux feuilles (A,B) dont l'une est plus longue que l'autre, à superposer et rabattre ces deux feuilles en formant une ondulation (C),à les souder à chaud de manière à former un espace (16,17,18), à insuffler un fluide dans.cet espace pendant sa formation. 8. A method of manufacturing an unballing according to claim 3, characterized in that it consists of two sheets (A, B) one of which is longer than the other, to superimpose and fold down these two sheets by forming a corrugation (C), to weld them hot so as to form a space (16,17,18), to inject a fluid into this space during its formation.
9. Procédé de fabrication d'un emballage selon la revendication 4, caractérisé par le fait qu'il consiste à partir de deux feuilles (A,B) dont l'une est plus large que l'autre, à superposer ces deux feuilles, plastique contre plastique, à les souder à chaud de manière à former un espace (16,17), à insuffler un fluide dans cet espace pendant sa formation.9. A method of manufacturing a packaging according to claim 4, characterized in that it consists of superposing these two sheets from two sheets (A, B), one of which is wider than the other, plastic against plastic, to weld them hot so as to form a space (16,17), to inject a fluid into this space during its formation.
10. Procédé de, fabrication de l'emballage selon lesrevendications 3 et 4, caractérisé en cequ'il consiste à partir de deux feuilles rectangulaires (A,B) dont l'une (A) est plus longue et plus large que l'autre (B), à superposer ces deux feuilles (A,B), couche plastique contre couche plastique, en faisant coincider leurs petits côtés et en formant une ondulation (C) pour absorber l'excédent de longueur de la feuille (A), à souder à chaud les deux feuilles (A,B) le long de bandes (D), à rabattre l'une contre l'autre les deux moitiés des deux feuilles (A,B) ainsi soudées, à souder à chaud les bords correspondants (E) de la feuille (A), et à insuffler durant cette dernière opération un fluide dans les espaces (16,17,18) en formation. 10. A method of manufacturing the packaging according to claims 3 and 4, characterized in that it consists of two rectangular sheets (A, B), one of which (A) is longer and wider than the other. (B), to superimpose these two sheets (A, B), plastic layer against plastic layer, making their short sides coincide and forming a ripple (C) to absorb the excess length of the sheet (A), heat weld the two sheets (A, B) along strips (D), fold the two halves of the two sheets (A, B) thus welded against each other, heat weld the corresponding edges ( E) of the sheet (A), and to inject during this last operation a fluid into the spaces (16,17,18) in formation.
EP84903944A 1984-10-30 1984-10-30 Isothermic package Expired - Lifetime EP0199716B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84903944T ATE53812T1 (en) 1984-10-30 1984-10-30 ISOTHERMAL PACKAGING.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1984/000174 WO1986002619A1 (en) 1984-10-30 1984-10-30 Isothermic package

Publications (2)

Publication Number Publication Date
EP0199716A1 true EP0199716A1 (en) 1986-11-05
EP0199716B1 EP0199716B1 (en) 1990-05-02

Family

ID=4541145

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84903944A Expired - Lifetime EP0199716B1 (en) 1984-10-30 1984-10-30 Isothermic package

Country Status (6)

Country Link
US (1) US4755064A (en)
EP (1) EP0199716B1 (en)
JP (1) JPS62501064A (en)
AT (1) ATE53812T1 (en)
DE (1) DE3482105D1 (en)
WO (1) WO1986002619A1 (en)

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Also Published As

Publication number Publication date
ATE53812T1 (en) 1990-06-15
US4755064A (en) 1988-07-05
DE3482105D1 (en) 1990-06-07
EP0199716B1 (en) 1990-05-02
JPS62501064A (en) 1987-04-30
WO1986002619A1 (en) 1986-05-09

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