EP4194364B1 - Récipient thermique - Google Patents

Récipient thermique Download PDF

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Publication number
EP4194364B1
EP4194364B1 EP23154559.1A EP23154559A EP4194364B1 EP 4194364 B1 EP4194364 B1 EP 4194364B1 EP 23154559 A EP23154559 A EP 23154559A EP 4194364 B1 EP4194364 B1 EP 4194364B1
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EP
European Patent Office
Prior art keywords
thermal container
cushion
bag
container according
fibrous material
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.)
Active
Application number
EP23154559.1A
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German (de)
English (en)
Other versions
EP4194364C0 (fr
EP4194364A1 (fr
Inventor
Georg Scheffer
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.)
Profuemed Karlheinz Lohr E K
Original Assignee
Profuemed Karlheinz Lohr E K
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Publication of EP4194364A1 publication Critical patent/EP4194364A1/fr
Application granted granted Critical
Publication of EP4194364C0 publication Critical patent/EP4194364C0/fr
Publication of EP4194364B1 publication Critical patent/EP4194364B1/fr
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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
    • B65D81/3893—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 with double walls, i.e. hollow
    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls

Definitions

  • the present invention relates to a thermal container which has at least one flat back cushion and a flat front cushion which extends in a different plane above the back cushion and which are connected to one another at opposite side edges of the thermal container, wherein the back cushion and the front cushion are sewn and/or glued and/or crimped together at the opposite side edges of the thermal container and are formed in one piece at a further side edge of the thermal container, so that a hollow space is formed between the back cushion and the front cushion into which at least one object whose temperature is to be maintained can be introduced, wherein the back cushion and the front cushion are each formed from at least one bag and a fibrous material located in the at least one bag.
  • Thermal containers of this type are designed to maintain the temperature of the packaged goods placed inside the cavity for a specific period of time. These thermal containers can therefore maintain the cooling or heating of the packaged goods within a specific temperature range for a specific period of time. This makes it possible to ship frozen goods, such as frozen food or pet food, for up to 36 hours without damaging the food or pet food in question.
  • the printed matter DE 20 2016 100 510 U1 discloses an insulating packaging which is open on one side and has an insulating casing with two double-walled, materially bonded side walls, between which an insulating material in the form of fibres is inserted.
  • a barrier structure in the form of an elliptical bubble used in a container which has a first membrane for reflecting electromagnetic radiation and a vapor-impermeable second membrane connected to the first membrane only at opposite side edges, between which a fiber layer, such as a wadding or nonwoven layer made of PET fibers and a binder, is arranged.
  • a cooling bag which has a fleece layer inserted between an outer skin and an inner skin, into which a water-storing granulate is inserted and which serves as a heat-insulating layer.
  • a thermal container comprising at least one flat back cushion and a flat front cushion extending in a different plane above the back cushion, which are connected to one another at opposite side edges, wherein the back cushion and the front cushion are sewn and/or glued and/or crimped to one another at the opposite side edges of the thermal container and are formed in one piece at a further side edge of the thermal container, so that a cavity is formed between the back cushion and the front cushion, into which at least one object whose temperature is to be preserved can be introduced, wherein the back cushion and the front cushion are each formed from at least one bag and a fibrous material located in the at least one bag, wherein the fibrous material is a single layer or a stack of a plurality of flat, superimposed individual layers of corrugated and/or zigzag-shaped or folded fibrous material, wherein the individual layer or each of the individual layers of the stack has a corrugated and/or zigzag height of ⁇ 0.3 mm, and/or the fibrous
  • the thermal container according to the invention is particularly suitable as a cooling bag.
  • the at least one object whose temperature is to be preserved can advantageously be placed in the cavity formed between the back cushion and the connected front cushion. The cavity can then be suitably closed.
  • the fiber material of the back cushion and the front cushion guarantees particularly advantageous thermal insulation of the at least one object placed in the thermal container from the environment. Due to its structure, the fiber material has a multitude of air pockets or air gaps, which allows the respective temperature to be maintained particularly well. Thus, the present invention even makes it possible, for example, to maintain the cooling of a packaged item placed in the thermal container within a desired temperature range for up to 72 hours.
  • the air pockets or air spaces are formed between the waves and/or folds. If a stack of corrugated and/or zigzag-shaped laid or folded individual layers is used to form the fiber material, each of the individual layers has a multitude of peaks and valleys due to the corrugation and/or zigzag-shaped laying or folding of the individual layers, with air collecting in the valleys.
  • the corrugation and/or the zigzag-shaped design of the laying or folding is formed from the outset or can be designed in such a way that it is not identical from individual layer to individual layer and the individual layers are therefore not stacked precisely on top of one another or are pressed into one another, the valleys of the individual layers above do not fit or do not fit completely into the Valleys of the individual layers below are set identically, so that an air space is always maintained.
  • the special feature of the present invention is that the individual layer or each of the individual layers has a corrugation and/or zigzag height of ⁇ 0.3 mm, preferably ⁇ 0.4 mm, particularly preferably ⁇ 0.6 mm, in one embodiment ⁇ 0.65 mm. This ensures that particularly large air pockets or air gaps are formed between the individual layers of corrugated and/or zigzag-shaped or folded fiber material lying flat on top of one another, which leads to a particularly high temperature retention capacity of the thermal container formed thereby.
  • the fiber material contains fiber flakes or fiber powder. There is a lot of air between the fiber flakes or fiber powder particles, which serves as thermal insulation.
  • the respective fiber material cannot slip, both due to the individual layer or the plurality of superimposed individual layers and due to the respective insertion into the bag.
  • the bag forms a covering for the respective fiber material, which leads to mechanical stabilization.
  • a plurality of superimposed individual layers is used, consisting of at least 10 individual layers, preferably 24, 28, or 32 individual layers. These individual layers are doubled and cut to the desired width depending on the size of the pillow.
  • the bag also serves as a protective layer for the fiber material contained within. Furthermore, it is possible to insert at least one cooling pack into the bag, for example.
  • fibre material used which can be a primary fibre such as paper, kraft paper, cellulose, mechanical pulp or semi-cellulose, and/or a secondary fibre such as fibre obtained from waste paper, is that it is a natural, environmentally friendly material which is easily recyclable and already has low thermal conductivity and therefore good thermal insulation properties.
  • the formation of the fiber material used leads to an advantageous softness and voluminosity, which ensure that a packaged item can be safely stored and transported in the thermal container according to the invention.
  • the thermal container according to the invention is easy to stack, but can also be used as a shopping bag.
  • the at least one pouch of the back cushion and the at least one pouch of the front cushion are formed from a nonwoven fabric made of thermoplastic material and/or paper. Holes can be introduced into the nonwoven fabric and/or the paper. For example, air holes can be introduced into the paper using a hedgehog roller, thereby preventing the formation of waterlogging in the thermal container.
  • Kraft paper is particularly suitable for this purpose because it is particularly sturdy. Paper is also easily recyclable.
  • the at least one bag in the present invention is made of a nonwoven fabric made of thermoplastic material, it provides good moisture protection for the fibrous material contained therein, which has good absorbency. This is particularly the case if the nonwoven fabric is a polypropylene spunbond.
  • At least one bag encloses the fiber material in a tube-like manner.
  • the thermal container according to the invention is particularly ecologically valuable if the corrugated and/or zigzag-shaped or folded fiber material is made of cellulose wadding, which is made of at least 90% recycled waste paper with waste paper qualities according to DIN EN 643.
  • slippage of the fibrous material within the bag can be prevented if the at least one bag is secured to the fibrous material with spaced-apart adhesive lines.
  • Synthetic hot-melt adhesive for example, can be used as the adhesive. This can be applied in thin lines spaced, for example, from 15 to 30 mm apart, preferably from 20 mm apart.
  • the thermal container In order to maintain the temperature of the packaged goods placed in the thermal container, it is recommended to seal the thermal container appropriately. According to the invention, this is particularly well achieved by either the back cushion having a back cushion section that protrudes beyond the front cushion on one side or by a closure flap that adjoins the back cushion on one side.
  • the protruding back cushion section or the closure flap can be folded onto a surface of the front cushion to close the hollow space of the thermal container and can be connected to it directly or indirectly.
  • the projecting back cushion section or the closure flap are preferably made of the same material as the material of the at least one bag.
  • the at least one bag with the fibrous material introduced therein is preferably separated from a bag band comprising a plurality of such bags, and the projecting back cushion section or the closure flap is formed from a nonwoven fabric made of thermoplastic material which projects beyond a bag section containing the fibrous material.
  • the thermal container according to the invention can be used particularly well as a cooling bag if at least one carrying handle is provided on the thermal container.
  • the side edges of the thermal container according to the invention are particularly stable because the back cushion and the front cushion are sewn and/or glued and/or crimped together at the opposite side edges of the thermal container.
  • FIG. 1 shows a schematic plan view of a possible embodiment of a thermal container 1 according to the invention.
  • the thermal container 1 is a cooler bag for transport purposes.
  • a cooler bag can, for example, have an outer width of 300 to 600 mm and an outer length of 300 to 600 mm.
  • the closure flap of the cooler bag can have a length of 50 mm to 120 mm. Other dimensions are of course also possible.
  • the thermal container 1 can also be used to keep objects warm.
  • thermal container 1 is made of Figure 1 opened with a packaged item 15 inserted therein in a plan view.
  • the thermal container 1 has a flat back cushion 2 and a flat front cushion 3.
  • the back cushion 2 is connected to the front cushion 3 at opposite side edges 4, 5 of the thermal container 1. In the illustrated In the embodiment, this connection is realized by seams 16, 17 running along the side edges 4, 5.
  • this connection can be made alone or in combination with the seams 16, 17 by gluing and/or squeezing the material.
  • the back cushion 2 and the front cushion 3 are formed from the same material web in the form of a bag band. Therefore, the back cushion 2 is integrally formed with the front cushion 3 at a further side edge 6 of the thermal container 1; the material of the back cushion 2 thus merges directly into the material of the front cushion 3 at the side edge 6, which can, for example, form the bottom edge of a pocket.
  • the back cushion 2 has a back cushion section 21 projecting over the front cushion 3 on one side.
  • a closure flap can also be attached to the back cushion 2 on one side.
  • the projecting back cushion section 21 or the closure flap are, as indicated by the arrow A in Figure 2 As indicated schematically, it is folded onto a surface of the front cushion 3 to close the hollow space 7 and is connected to it directly or indirectly.
  • the protruding back cushion section 21 or the closure flap can be glued to the front cushion 3 using adhesive lines.
  • adhesive dots can also be used for this purpose.
  • the back cushion 2 and the front cushion 3 each have a bag 8.
  • the bag 8 encloses a fiber material 9 in a tube-like manner.
  • the fibrous material 9 consists of a single layer 91 or a stack of a plurality of individual layers 91 lying flat one above the other, made of corrugated and/or zigzag-shaped or folded fibrous material.
  • the special feature of the corrugated or zigzag-shaped or folded fibrous material used here is that the corrugations and/or zigzags have a particularly high corrugation and/or zigzag height d of ⁇ 0.3 mm per individual layer 91.
  • the corrugation and/or zigzag height d is even greater, such as ⁇ 0.5 mm or even ⁇ 0.65 mm.
  • the wave and/or zigzag height d of 0.65 mm results in an extensibility of 80% for the material used, which in the example shown is cellulose wadding.
  • the area-related mass of the corrugated and/or zigzag-shaped or folded fiber material used is 23 grams per square meter.
  • the fibrous material 9 may have undergone a wet pulping process and removal of non-paper components, but without additional bleaching; these steps are optional.
  • the fibrous material 9 was then corrugated or zigzag-folded according to the following procedure: As in Figure 4 As can be seen, the fibrous material 9 is unwound on a device 10 as a pulp layer from a pulp roll 22 at an unwinding speed v 1. Then for example, the fibrous material 9 is guided through a gap between two counter-rotating transport rollers 23, 24 in a roller pair. The rotational speed of the transport rollers 23, 24 can be adjusted separately. After passing through the roller pair 23, 24, the fibrous material 9 is drawn off at a draw-off speed v 2 , i.e., transported further.
  • the fibrous material 9 is fed to the roller pair 23, 24 on a straight path.
  • the feeding of the fibrous material 9 to the roller pair 23, 24 can also be carried out in such a way that waves and/or folds are deliberately created in the fibrous material 9 even before the roller pair 23, 24.
  • the take-off speed v 2 is set so that it is lower than the unwinding speed v 1.
  • the take-off speed v 2 and/or the unwinding speed v 1 can also be varied during the course of the process.
  • paper layers 81, 82 are fed to the device 10 on both sides of the fibrous material 9.
  • the paper layers 81, 82 are preferably made of kraft paper. Between further transport rollers 25, 26, 27, 28 of the device 10, a first of the paper layers 81 is guided over the folded and/or corrugated fibrous material 9, and a second of the paper layers 82 is guided under the folded and/or corrugated fibrous material 9.
  • the feed speed of the paper layers 81, 82 preferably corresponds to the take-off speed v 2 and is thus also lower than the unwinding speed v 1 .
  • the fibrous material 9 located between the paper layers 81, 82 encloses air. These air inclusions create an insulating effect.
  • individual layers 91 can be doubled to form a stack of 24, 28 or 32 individual layers 91, for example. This is preferably done on a laying machine.
  • the individual layers 91 are typically placed on top of one another in the same layer production direction. However, since the corrugations and/or folds of the individual layers 91 never lie exactly on top of one another, the overlapping of the individual layers 91 results in a correspondingly high stack height and, at the same time, a high stack volume.
  • the stack height can be, for example, approximately 15 mm for 24 individual layers 91, approximately 20 mm for 28 individual layers 91, and approximately 25 mm for 32 individual layers 91.
  • the bag 8 consists of a polypropylene spunbonded fabric, which wraps around the stack of individual layers 91 in a tube-like manner.
  • the polypropylene spunbonded fabric ensures, on the one hand, the cohesion of the individual layers 91 and, on the other hand, moisture protection, for example, against condensation.
  • the bag 8 can also be formed from the paper layers 81, 82.
  • FIG. 1 The attachment of the bag 8 to the corrugated and/or folded fibrous material 9 is carried out as in Figure 1 shown schematically, using spaced-apart lines 13 of hot-melt adhesive.
  • these lines are spaced approximately 20 mm apart and run along the material web from which the back cushion 2 and the front cushion 3 are formed.
  • this material web has areas filled with the fibrous material 9 and adjoining pure nonwoven areas. Then, a nonwoven area adjoining a back cushion section of the material strip can be used as a closure flap for closing the thermal container 1. For example, a nonwoven overhang beyond the areas filled with the fibrous material 9 can be approximately 50 mm.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Claims (13)

  1. Récipient thermique (1) comprenant au moins un coussin arrière (2) plat et un coussin avant (3) plat qui s'étend dans un autre plan au-dessus du coussin arrière (2), qui sont reliés l'un avec l'autre au niveau de bords latéraux (4, 5) opposés, le coussin arrière (2) et le coussin avant (3) étant cousus et/ou collés et/ou pincés ensemble au niveau des bords latéraux (4, 5) opposés du récipient thermique (1), et sont formés d'une seule pièce à l'autre bord latéral (6) du récipient thermique (1), de sorte qu'une cavité (7) est formée entre le coussin arrière (2) et le coussin avant (3), dans quelle cavité (7) un objet, dont la température doit être maintenu, peut être introduit, le coussin arrière (2) et le coussin avant (3) étant formés chacun à partir d'au moins un sac (8) et d'un matériau fibreux (9) situé dans l'au moins un sac (8), caractérisé en ce que le matériau fibreux (9) est une couche individuelle (91) ou un empilement d'une pluralité de couches individuelles (91) plates superposées de matière fibreux ondulé et/ou disposé ou plié sous forme zigzag, la couche individuelle ou chacune des couches individuelles (91) de l'empilement présentant une hauteur d'ondulation et/ou de zigzag (d) ≥ 0,3 mm, le coussin arrière présentant ou bien une section de coussin arrière (21) qui dépasse le coussin avant (3) d'un côté, ou bien un rabat de fermeture étant relié au coussin arrière (2) d'un côté, la section de coussin arrière (21) en saillie ou le rabat de fermeture pour fermer la cavité (7) pouvant être replié(e) sur une surface du coussin avant (3) et y être relié(e) directement ou indirectement.
  2. Récipient thermique selon la revendication 1, caractérisé en ce que l'ondulation et/ou l'arrangement sous forme zigzag de la pose ou du pliage est dessiné de prime abord de sorte qu'il n'est pas identique d'une couche individuelle à l'autre ainsi que les couches individuelles ne peuvent pas superposées les uns aux autres sur mesure ou poussées les unes dedans des autres, et les vallées de la couche disposée au-dessus n'entrent pas ou pas complètement dans les vallées de la couche disposées au-dessous respectivement, de sorte qu'un espace d'air est maintenu en tout cas.
  3. Récipient selon la revendication 1, caractérisé en ce que le coussin arrière (2) et le coussin avant (3) sont formés de la même bande de matériau sous forme d'une bande de sacs, le matériau du coussin arrière (2) est en continuité avec le matériau du coussin avant (3) directement à l'autre bord latéral (6).
  4. Récipient thermique selon la revendication 1, caractérisé en ce que la hauteur d'ondulation et/ou de zigzag (d) est ≥ 0,6 mm.
  5. Récipient thermique selon l'une des revendications 1 ou 4, caractérisé en ce que l'au moins un sac (8) du coussin arrière (2) et aussi l'au moins un sac (8) du coussin avant (3) est formé d'un non-tissé de matériau thermoplastique et/ou de papier.
  6. Récipient thermique selon la revendication 5, caractérisé en ce que le non-tissé est un tissu à filage de polypropylène.
  7. Récipient thermique selon la revendication 1 ou l'une des revendications 4 à 6, caractérisé en ce que l'au moins un sac (8) enveloppe le matériau fibreux (9) à la manière d'un tuyau.
  8. Récipient thermique selon la revendication 1 ou l'une des revendications 4 à 7, caractérisé en ce que le matériau fibreux (9) est conçu à partir d'ouate de cellulose, qui est fabriquée à au moins 90 % à partir de vieux papier recyclé avec une qualité de vieux papier selon DIN EN 643.
  9. Récipient thermique selon la revendication 1 ou l'une des revendications 4 à 8, caractérisé en ce que l'au moins un sac (8) est fixé au matériau fibreux (9) avec des lignes adhésives (13) espacées les unes des autres.
  10. Récipient thermique selon la revendication 1, caractérisé en ce que la section de coussin arrière (21) en saillie ou le rabat de fermeture est conçu(e) à partir du même matériau que le matériau de l'au moins un sac (8).
  11. Récipient thermique selon au moins l'une des revendications 5 ou 6, caractérisé en ce que l'au moins un sac (8) avec le matériau fibreux (9) introduit à l'intérieur est séparée d'une bande de sacs présentant une pluralité desdits sacs (8), et la section de coussin arrière (21) en saillie ou le rabat de fermeture est conçu(e) à partir de non-tissé en matériau thermoplastique, qui fait saillie au-delà d'une section de sac contenant le matériau fibreux (9).
  12. Récipient thermique selon la revendication 1 ou l'une des revendications 4 à 11, caractérisé en ce qu'au moins une poignée de transport (14) est prévu sur le récipient thermique (1).
  13. Récipient thermique selon la revendication 1 ou l'une des revendications 4 à 12, caractérisé en ce que le matériau fibreux (9) présente des flocons de matériau fibreux ou de la poudre de matériau fibreux.
EP23154559.1A 2020-06-15 2021-05-11 Récipient thermique Active EP4194364B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202020103400.6U DE202020103400U1 (de) 2020-06-15 2020-06-15 Thermobehältnis
EP21173282.1A EP3925904B1 (fr) 2020-06-15 2021-05-11 Récipient thermique

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP21173282.1A Division EP3925904B1 (fr) 2020-06-15 2021-05-11 Récipient thermique
EP21173282.1A Division-Into EP3925904B1 (fr) 2020-06-15 2021-05-11 Récipient thermique

Publications (3)

Publication Number Publication Date
EP4194364A1 EP4194364A1 (fr) 2023-06-14
EP4194364C0 EP4194364C0 (fr) 2025-04-16
EP4194364B1 true EP4194364B1 (fr) 2025-04-16

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EP21173282.1A Active EP3925904B1 (fr) 2020-06-15 2021-05-11 Récipient thermique
EP23154559.1A Active EP4194364B1 (fr) 2020-06-15 2021-05-11 Récipient thermique

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EP21173282.1A Active EP3925904B1 (fr) 2020-06-15 2021-05-11 Récipient thermique

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EP (2) EP3925904B1 (fr)
DE (1) DE202020103400U1 (fr)
PL (2) PL4194364T3 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9002034U1 (de) * 1990-02-21 1990-04-26 Fabritz, Gerhard, 4150 Krefeld Kühltasche für empfindliche Lebensmittel
JP4034267B2 (ja) 2002-02-08 2008-01-16 グラフィック パッケージング インターナショナル インコーポレイテッド 断熱マイクロ波双方向性パッケージ
US20050118366A1 (en) 2003-06-25 2005-06-02 Piemonte Robert B. Barrier materials and containers made therefrom
DE202016100510U1 (de) * 2016-02-02 2016-02-11 Nordpack Gmbh Isolierverpackung und die Isolierverpackung beinhaltende Umverpackung
WO2019113453A1 (fr) * 2017-12-08 2019-06-13 Ranpak Corp. Emballage isolé et procédé

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Publication number Publication date
DE202020103400U1 (de) 2021-09-16
EP4194364C0 (fr) 2025-04-16
EP4194364A1 (fr) 2023-06-14
PL4194364T3 (pl) 2025-06-23
PL3925904T3 (pl) 2024-02-05
EP3925904B1 (fr) 2023-08-02
EP3925904C0 (fr) 2023-08-02
EP3925904A1 (fr) 2021-12-22

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