EP4194364A1 - Récipient thermique - Google Patents

Récipient thermique Download PDF

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Publication number
EP4194364A1
EP4194364A1 EP23154559.1A EP23154559A EP4194364A1 EP 4194364 A1 EP4194364 A1 EP 4194364A1 EP 23154559 A EP23154559 A EP 23154559A EP 4194364 A1 EP4194364 A1 EP 4194364A1
Authority
EP
European Patent Office
Prior art keywords
thermal container
back cushion
cushion
bag
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.)
Granted
Application number
EP23154559.1A
Other languages
German (de)
English (en)
Other versions
EP4194364C0 (fr
EP4194364B1 (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
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 Profuemed Karlheinz Lohr E K filed Critical Profuemed Karlheinz Lohr E K
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
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 another plane above the back cushion and which are connected to one another on opposite side edges of the thermal container, the back cushion and the front cushion being connected to the opposite side edges of the thermal container are sewn and/or glued and/or squeezed together and are formed in one piece on another side edge of the thermal container, so that a cavity is formed between the back cushion and the front cushion, in which at least one object whose temperature is to be maintained can be introduced, the back cushion and the front cushion each being formed from at least one bag and a fibrous material located in the at least one bag.
  • Thermal containers of this type are used to maintain the temperature of a packaged item introduced into the cavity over a specific period of time. With such thermal containers, the cooling or heating of the packaged goods placed in them can be maintained over a specific time within a specific temperature window. It is thus possible by means of such thermal containers, for example, to send frozen goods such as deep-frozen food or deep-frozen animal feed for up to 36 hours without the respective food or animal feed being damaged.
  • the pamphlet DE 20 2016 100 510 U1 discloses an insulating packaging which is open on one side and has an insulating covering with two double-walled side walls which are materially connected to one another and between which an insulating material in the form of fibers is introduced.
  • a double-walled bag open on one side, in which an insulating material is placed between an outer pocket and a smaller inner pocket inserted therein.
  • U.S. 2005/118366 A1 discloses a barrier structure used in a container, having the shape of an elliptical bubble, which has a first membrane for reflecting electromagnetic radiation and a vapor-impermeable second membrane connected by the first membrane only at opposite side edges, between which a fiber layer, such as a wadding - Or fleece 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, in which a water-storing granulate is introduced and which serves as a heat-insulating layer.
  • thermal containers In recent years, plastics have often been used to manufacture thermal containers. This is no longer justifiable from an ecological point of view. If natural substances were used to form thermal containers, the temperature duration was usually severely limited.
  • a thermal container which has at least one flat back cushion and a flat front cushion which extends in another plane above the back cushion and which are connected to one another on opposite side edges, with the back cushion and the front cushion on the opposite side edges of the thermal container are sewn and/or glued and/or squeezed together and are formed in one piece on another 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 maintained is placed where 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, in which the fibrous material is a single layer or a stack of a large number of single layers of corrugated and/or fibrous material laid or folded in a zigzag shape, the individual layer or each of the individual layers of the stack having a wave and/or zigzag height of ⁇ 0.3 mm, and/or the fibrous material has fibrous material flakes or fibrous material powder, which is applied to
  • the thermal container according to the invention is suitable as a cool bag.
  • the at least one object whose temperature is to be maintained can advantageously be placed in the cavity formed between the back cushion and the front cushion connected thereto. Thereafter, the cavity can be suitably sealed.
  • the fibrous material of the back cushion and the front cushion guarantees a particularly advantageous thermal insulation of the at least one object placed in the thermal container from the environment. Due to its structure, the fibrous material has a large number of air inclusions or air gaps, as a result of which the respective temperature can be maintained particularly well. It is thus even possible with the present invention, for example, to maintain cooling of a packaged item placed in the insulated container for up to 72 hours within a desired temperature window.
  • the air inclusions or air gaps are formed between the corrugations and/or folds. If a stack of corrugated and/or zigzag-shaped laid or folded individual layers is used to form the fibrous material, the corrugation and/or zigzag-shaped laying or folding of the individual layers means that each of the individual layers has a large number of peaks and valleys, with air in the valleys collects.
  • the corrugation and/or the zigzag configuration of the layering 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 on top of one another with a perfect fit or are pressed into one another, the Valleys of each overlying individual layer not or not fully in the Valleys of the individual layer below are identical, so that an air gap is maintained in any case.
  • the special feature of the present invention is that the individual layer or each of the individual layers has a wave and/or zigzag height of ⁇ 0.3 mm, preferably ⁇ 0.4 mm, particularly preferably ⁇ 0.6 mm, in one Having embodiment of ⁇ 0.65 mm. This ensures that particularly large air inclusions or air gaps are formed between the superimposed individual layers of corrugated and/or zigzag-shaped or folded fiber material, which leads to a particularly high temperature retention capacity of the thermal container formed therewith.
  • This effect can be intensified if the fibrous material has fibrous flakes or fibrous powder. There is a lot of air between the fiber flakes or the particles of the fiber powder, which is used for thermal insulation.
  • the respective fibrous material cannot slip, on the one hand due to the individual layer or the multiplicity of individual layers lying one on top of the other and on the other hand due to the respective introduction into the bag. This is because the bag forms an envelope for the respective fibrous material, which leads to mechanical stabilization.
  • a number of at least 10 individual layers preferably 24, 28 or 32 individual layers, are preferably used as a multiplicity of individual layers lying one on top of the other. These individual layers are doubled and cut to the desired width depending on the size of the pillow.
  • the pouch also has a protective function for the fibrous material contained therein. It is also possible, for example, to introduce at least one cold pack into the bag.
  • a further advantage of the fibrous material used which can be a primary fibrous material such as paper, kraft paper, a chemical pulp, a mechanical pulp or a semi-chemical pulp, and/or a secondary fibrous material such as a fibrous material obtained from waste paper, is that it is a natural, material that is harmless to the environment is easily recyclable and already has low heat conduction and thus good thermal insulation properties.
  • the design of the fibrous material used leads to an advantageous softness and volume, 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 can be easily stacked, but can also be used as a shopping bag.
  • the at least one bag of the back cushion and the at least one bag of the front cushion are made of a fleece made of thermoplastic material and/or of paper. Holes can be introduced into the fleece and/or the paper. For example, air holes can be introduced into the paper with a hedgehog roller, as a result of which the formation of waterlogging in the thermal container can be avoided.
  • Kraft paper is particularly suitable as paper because it is particularly stable. Paper is also easily recyclable.
  • the at least one bag in the present invention is made of a fleece made of thermoplastic material, it offers good moisture protection for the fibrous material inside, which has good absorbency. This is particularly the case when the web is a spunbonded polypropylene web.
  • the at least one bag encases the fibrous material in the manner of a tube.
  • the thermal container according to the invention is particularly ecologically valuable if the corrugated and/or zigzag laid or folded fibrous material is made from cellulose wadding made from at least 90% recycled waste paper with waste paper qualities according to DIN EN 643.
  • the fibrous material can be prevented from slipping inside the bag if the at least one bag is fixed to the fibrous material with adhesive lines that are spaced apart from one another.
  • Synthetic hot-melt adhesive for example, can be used as the adhesive here. This can be applied in thin lines which, for example, have a spacing of 15 to 30 mm, preferably 20 mm.
  • the back cushion has a back cushion section that protrudes over the front cushion on one side or that a closure flap is attached to the back cushion on one side, with the protruding back cushion section or the closure flap being able to be folded onto a surface of the front cushion to close the cavity of the thermal container and can be directly or indirectly connected to it.
  • the protruding 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 having a plurality of such bags, and the protruding back cushion section or the closure flap is made of fleece made of thermoplastic material, which protrudes beyond a bag section containing the fibrous material .
  • the thermal container according to the invention can be used particularly well as a cool 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, since the back cushion and the front cushion are sewn and/or glued and/or pinched together on the opposite side edges of the thermal container.
  • FIG 1 shows schematically a possible embodiment of a thermal container 1 according to the invention in a plan view.
  • the thermal container 1 is a cooling bag for transport purposes.
  • a cool bag can, for example, have an outside width of 300 to 600 mm and an outside length of 300 to 600 mm.
  • the closure flap of the cool bag can have a length of 50 mm to 120 mm. Of course, other dimensions are also possible.
  • the thermal container 1 can also be used to keep objects warm.
  • thermal container 1 is off figure 1 shown open with a packaged item 15 placed 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 exemplary 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 web of material designed in the form of a bag band.
  • the back cushion 2 is therefore formed in one piece with the front cushion 3 on another side edge 6 of the thermal container 1, so the material of the back cushion 2 merges directly into the material of the front cushion 3 at the side edge 6, which can form the bottom edge of a bag, for example.
  • a cavity 7 is formed between the back cushion 2 and the front cushion 3, into which, as in FIG figure 2 to see the packaged goods 15 being introduced.
  • the illustrated embodiment has the back cushion 2 on one side over the front cushion 3 protruding back cushion section 21.
  • a closure flap can also be attached to the back cushion 2 on one side.
  • the protruding back cushion portion 21 or the locking tab is closed as indicated by the arrow A in figure 2 is indicated schematically folded to close the cavity 7 on a surface of the front cushion 3 and directly or indirectly connected to it.
  • the overhanging back cushion section 21 or the closure flap can be glued to the front cushion 3 by means of adhesive lines.
  • adhesive nubs 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 fibrous material 9 like a tube.
  • the fibrous material 9 is used, which in figure 3 is shown schematically in a side view that is not true to scale.
  • the fibrous material 9 consists of an individual layer 91 or of a stack of a large number of individual layers 91 lying flat on top of one another and made of corrugated and/or zigzag-shaped or folded fibrous material.
  • the special feature of the corrugated or zigzag laid or folded fiber 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 wave 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 leads to an extensibility of 80% in the material used, which is cellulose wadding in the exemplary embodiment shown.
  • the mass per unit area of the corrugated and/or zigzag laid or folded fiber material used is 23 grams per square meter.
  • the corrugated and/or zigzag laid or folded fiber material 9 was produced in the following manner, but can also be produced in other embodiments of the invention in a different or modified manner: Pulp, preferably creped or non-creped tissue, for example recycled cellulose wadding from selected waste paper qualities according to DIN EN 643, was used as the fibrous material 9 .
  • the pulp used preferably, but not necessarily, has a grammage below 20 g/m 2 .
  • a wet pulping process and the removal of non-paper components can have been carried out on the fibrous material 9, but without additional bleaching, but these steps are optional. Thereafter, the corrugation or zigzag folding of the fibrous material 9 was carried out according to the following procedure: As in figure 4 As can be seen, the fibrous material 9 is unwound in a device 10 as a cellulose layer from a cellulose roll 22 at an unwinding speed v 1 . Then the fibrous material 9 is guided, for example, through a gap of a pair of rollers between two transport rollers 23, 24 rotating in opposite directions. The rotational speed of the transport rollers 23, 24 can be adjusted separately from one another. After passing through the pair of rollers 23, 24, the fibrous material 9 is drawn off at a draw-off speed v 2 , ie transported further.
  • the fibrous material 9 is fed to the pair of rollers 23, 24 on a straight path.
  • the fibrous material 9 can also be fed to the pair of rollers 23, 24 in such a way that waves and/or folds are generated in the fibrous material 9 in a targeted manner even before the pair of rollers 23, 24.
  • the take-off speed v 2 is adjusted so that it is lower than the unwind speed v 1 .
  • the fibrous material 9 accumulates and forms folds and/or waves 90 in the further course of the device 10.
  • the take-off speed v 2 and/or the unwinding speed v 1 can also be varied in the course of the method.
  • paper layers 81, 82 are fed to the device 10 on both sides of the fibrous material 9.
  • the paper plies 81, 82 are preferably made of kraft paper. A first of the paper layers 81 is guided over the folded and/or corrugated fiber material 9 and a second of the paper layers 82 under the folded and/or corrugated fiber material 9 between further transport rollers 25, 26, 27, 28 of the device 10.
  • the feeding speed of the feeding of the paper layers 81, 82 preferably corresponds to the take-off speed v 2 and is therefore also lower than the unwinding speed v 1 .
  • the fibrous material 9 located between the paper layers 81, 82 encloses air as a result of the folds and/or waves 90. These air pockets have an insulating effect.
  • individual layers 91 can be doubled to form a stack with 24, 28 or 32 individual layers 91, for example. This is preferably done on a laying machine.
  • the individual layers 91 typically lie on top of one another in the same layer production direction. However, since the corrugations and/or folds of the individual layers 91 are never exactly on top of one another, the stacking of the individual layers 91 on top of one another results in a correspondingly high stack height and at the same time a high stack volume.
  • the stack height can be, for example, about 15 mm for 24 individual layers 91, about 20 mm for 28 individual layers 91 and about 25 mm for 32 individual layers 91.
  • the embodiment shown consists of the bag 8 made of a polypropylene spunbonded nonwoven, with which the stack of the individual layers 91 is encased like a tube.
  • the polypropylene spun-bonded fleece ensures that the individual layers 91 are held together and, on the other hand, protection against moisture, for example against condensation.
  • the bag 8 can, however, also be formed from the paper layers 81, 82.
  • the bag 8 is attached to the corrugated and/or folded fibrous material 9 as shown in FIG figure 1 shown schematically by means of spaced lines 13 of hot melt adhesive.
  • these lines are spaced about 20 mm apart and run along the web of material from which the back cushion 2 and the front cushion 3 are formed.
  • this web of material has areas filled with the fibrous material 9 and adjoining pure fleece areas.
  • a non-woven area, which adjoins a back cushion section of the material band, can then be used as a closure flap for closing the thermal container 1 .
  • a fleece overhang over the areas filled with the fibrous material 9 can be approximately 50 mm.
  • the web is severed transversely to the direction in which it runs.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
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 true EP4194364A1 (fr) 2023-06-14
EP4194364C0 EP4194364C0 (fr) 2025-04-16
EP4194364B1 EP4194364B1 (fr) 2025-04-16

Family

ID=75904822

Family Applications (2)

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

Country Status (3)

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

Citations (4)

* 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
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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (4)

* 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
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

Also Published As

Publication number Publication date
DE202020103400U1 (de) 2021-09-16
EP4194364C0 (fr) 2025-04-16
PL4194364T3 (pl) 2025-06-23
PL3925904T3 (pl) 2024-02-05
EP3925904B1 (fr) 2023-08-02
EP4194364B1 (fr) 2025-04-16
EP3925904C0 (fr) 2023-08-02
EP3925904A1 (fr) 2021-12-22

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