EP0841260A1 - Sachet de protection congelable - Google Patents

Sachet de protection congelable Download PDF

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Publication number
EP0841260A1
EP0841260A1 EP97309097A EP97309097A EP0841260A1 EP 0841260 A1 EP0841260 A1 EP 0841260A1 EP 97309097 A EP97309097 A EP 97309097A EP 97309097 A EP97309097 A EP 97309097A EP 0841260 A1 EP0841260 A1 EP 0841260A1
Authority
EP
European Patent Office
Prior art keywords
flexible
freezable
layer
pouch according
lining
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Withdrawn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
EP97309097A
Other languages
German (de)
English (en)
Inventor
Edwin Francis Tattam
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
Publication of EP0841260A1 publication Critical patent/EP0841260A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/02—Devices using other cold materials; Devices using cold-storage bodies using ice, e.g. ice-boxes
    • F25D3/06—Movable containers
    • F25D3/08—Movable containers portable, i.e. adapted to be carried personally
    • 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
    • B65D81/18—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 providing specific environment for contents, e.g. temperature above or below ambient
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2303/00—Details of devices using other cold materials; Details of devices using cold-storage bodies
    • F25D2303/08—Devices using cold storage material, i.e. ice or other freezable liquid
    • F25D2303/082—Devices using cold storage material, i.e. ice or other freezable liquid disposed in a cold storage element not forming part of a container for products to be cooled, e.g. ice pack or gel accumulator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2331/00—Details or arrangements of other cooling or freezing apparatus not provided for in other groups of this subclass
    • F25D2331/80—Type of cooled receptacles
    • F25D2331/801—Bags
    • F25D2331/8015—Pouches

Definitions

  • This invention relates to a freezable flexible pouch for transporting "cold chain” products and keeping them cool in transit.
  • Fragile products are currently generally transported from place to place either using the postal or courier services in bags with double thickness walls filled with an energy absorbing material such as shredded paper. Whilst these bags provide protection against their contents 'being damaged in transit, they have no thermal insulating properties so they cannot be used to transport fragile products which need to be kept cool while in transit. Such products are known as "cold chain” products and up until now they have generally been transported in thermally insulated rigid containers (usually made from a rigid foam material) but these are bulky and therefore take up a large amount of storage space when not in use. Furthermore, they cannot adapt to the shape of the product to be transported so additional energy absorbing packing material has to be inserted into the container around the product to protect it and this adds to the cost of the transportation.
  • a freezable flexible protective pouch comprising:
  • the invention also consists in a freezable flexible protective pouch comprising a flexible outer enclosure, a flexible energy absorbing layer within the enclosure, and a flexible layer containing a freezable liquid, the product to be transported being placed, in use, alongside the freezable flexible layer which is located within the energy absorbing layer.
  • At least one flexible thermal insulating layer may be located alongside the freezable flexible layer, the product to be transported being placed, in use, alongside the freezable flexible layer but spaced from it by said flexible thermal insulating layer.
  • the outer enclosure is made from a metallised plastic material and the energy absorbing layer is a separate layer inserted within the outer enclosure.
  • this separate layer is a sheet of foam material which is folded over into a U shape and inserted into the outer enclosure.
  • the outer enclosure can be formed with a double thickness wall with the foam material therebetween.
  • the flexible energy absorbing layer is attached to the inner wall of the outer enclosure.
  • the energy absorbing layer can be made from any flexible deformable material, for instance a plastics foam or beads.
  • the freezable lining includes a plurality of discrete pockets provided in a sheet of flexible material, each pocket being filled with the freezable liquid.
  • the freezable lining comprises four layers of flexible material so that the walls of each pocket are double skinned.
  • the freezable lining is heat welded along seams to sealingly connect the various layers together, the seams intersecting longitudinally and laterally to provide a grid system with the pockets located between the longitudinal and lateral seams.
  • An additional thermal insulating layer can be provided around the outside of the freezable lining.
  • this additional layer comprises a sheet of perforated plastics material which is incorporated into the freezable lining to provide an extra skin on the exterior surface thereof.
  • the additional layer is made of a plastics material such as polyethylene or foamed polyethylene.
  • a flexible outer enclosure or envelope 1 which is preferably made from a flexible plastics material which may have a metallised coating on its outer surface.
  • the envelope is formed by heat sealing its side edges along weld lines 4 and along its bottom by a weld line 5.
  • the envelope 1 has a flap 2 at one end thereof provided with means 3 for attaching it to the outer surface of the envelope to close it.
  • this attachment means 3 comprises an adhesive strip but any other suitable releasable attachment means could be used.
  • this layer 6 is shown as being a sheet of flexible foam which is folded in half and inserted into the envelope. However, it could be tubular.
  • the lining 6 is shown as being separate in the drawings, it could be attached to the inner wall of the outer envelope 1 to form a part thereof.
  • the outer envelope 1 can have double skinned walls with the foam layer 6 being provided between them as an integral part of the envelope.
  • a freezable lining 7 is positioned inside the energy absorbing lining 6 as illustrated.
  • This freezable lining comprises a multi-layered sheet of flexible plastics material formed with a plurality of individual pockets 8 filled with a freezable liquid such as water.
  • the pockets 8 are formed in known manner by applying heat welding bars (not shown) to the lining 7 in a grid pattern to heat seal the lining and form horizontal seams 9a and vertical seams 9b. It will be appreciated therefore that the pockets 8 can be formed in any configuration dependent on the way in which the welding bars are applied to it. For instance, they could be diamond shaped, square or rectangular.
  • each pocket 8 of the freezable lining 7 are preferably double skinned to give them added protection against being accidentally perforated.
  • the flexible freezable lining 7 would normally comprise four layers of material seam welded together to provide the pocket 8.
  • the freezable lining 7 its outer surface can be covered with an additional insulating layer (not shown).
  • an additional insulating layer (not shown). Any suitable thermally insulating material can be used but polyethylene or foamed polyethylene are preferred.
  • the insulating layer has a plurality of perforations in it, each hole having a generally tubular section projecting from one side of the layer around the hole which contacts the freezable layer of material immediately behind it thereby spacing the outer surface of the lining 7 from the adjacent insulating layer to form a space therebetween which entraps air and improves its insulating properties.
  • the pockets 8 can be filled with a liquid such as ethylene glycol which does not actually freeze into a solid when subjected to temperatures between 0 and -10 degrees C, but instead changes to a semi-frozen slush.
  • a liquid such as ethylene glycol which does not actually freeze into a solid when subjected to temperatures between 0 and -10 degrees C, but instead changes to a semi-frozen slush.
  • the lining 7 will remain flexible after freezing because the seams 9a, 9b between adjacent pockets remain flexible when frozen so the pockets 8 can adapt themselves quite readily to the contours of a product 10 located inside the lining 7.
  • the layer 6 provides thermal insulation for the freezable inner lining 7 thereby keeping a product 10 contained within it cool for long periods in transit as well as protecting the product from impact damage.
  • the pouch 1 can be of any suitable size and shape and made of any suitable tear-resistant material.
  • the second preferred embodiment shown therein is based on the same principles as the first preferred embodiment shown in Figure 1 and 2 and described, together with modifications and alternatives, above. Consequently, the same reference numerals are used for the same or similar parts, but with the suffix "a".
  • the freezable lining 7 has been simplified to become a freezable layer 7a with the product 10a to be transported being placed, in use, alongside the flexible freezable layer 7a instead of being placed inside the flexible freezable lining 7.
  • FIG. 3 and 4 there is shown a flexible outer enclosure or envelope la which is identical to the outer envelope 1 described above, having a flap 2a at one end and attachment means 3a, except that the weld lines 4a and 5a heat sealing its side edges and bottom incorporate gussets 12a which allow the envelope la to expand to accommodate a bulkier product 10a.
  • the gussets 12a are equally applicable to the envelope 1 of the first preferred embodiment of Figures 1 and 2.
  • the envelope la has inserted inside it a flexible energy absorbing layer 6a which is folded in half and inserted in the envelope la.
  • the layer 6 is made of a plastics foam material so that it also constitutes a flexible thermal insulating layer 6a.
  • a further flexible thermal insulating layer 6a accompanies the first layer 6a around the inside of the envelope la.
  • many more layers 6a may also be included, typically up to a total of eight in number to improve still further the insulating and energy absorbing properties of the pouch.
  • Figures 3 and 4 only show two layers 6a.
  • All of the energy absorbing linings 6a are enclosed within a flexible polyethylene bag 13, which is nearly twice as long as the length of each lining 6a.
  • the linings 6a are slid together into the bag 13 and along its length to its closed bottom end.
  • the open top end of the bag 13 is then tucked down into the inside of the innermost lining 6a, holding the linings 6a neatly together before they are inserted in the envelope la.
  • the bag 13 is shown in Figure 4 and partly shown in Figure 3.
  • the bag 13 is also applicable to the first preferred embodiment.
  • the freezable layer 7a is positioned inside the innermost energy absorbing lining 6a, and inside the tucked-in end of the bag 13, and is of the same construction as the freezable lining 7 with the identical seams 9a and 9b except that the layer 7a is a single layer.
  • the freezable layer 7a may also have one or both of its surfaces covered with the additional insulating layer (not shown) described above for the first preferred embodiment.
  • the product 10a to be transported is placed alongside the flexible freezable layer 7a within all of the layers 6a, and the tucked-in end of the bag 13, and is very quickly at the same temperature as the flexible freezable layer 7a. This is particularly so if the layer 7a does not have on its surface adjacent the product 10a the additional insulating layer (not shown) described in the last preceding paragraph.
  • the layer 7a can be supplemented by one or more further layers 7a beside it, or the flexible freezable lining 7 of the first preferred embodiment can be used as a double layer but with the product 10a alongside it instead of being placed inside it.
  • Certain products 10a need to be kept cold in transport, but must not be allowed to freeze.
  • a typical transport temperature range is 2 °C - 8 °C.
  • the pouch is provided with at least one flexible thermal insulating layer 14 (shown as a dotted line in Figure 4) located alongside the layer 7a.
  • the product 10a is placed, in use, alongside the layer 7a but spaced from it by the flexible thermal insulating layer 14 to provide the required measure of insulation from the layer 7a.
  • the product 10a does not chill below 2 °C, and the insulation of the pouch outside the product 10a keeps its temperature below 8 °C for the required time for transport.
  • the pouch of the present invention may be wholly made of polyethylene, and therefore be easily recycled.
  • the linings 6 and 6a provide so much thermal insulation that the outside of the envelope 1 or la does not feel cold to the touch or develop any condensation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Packages (AREA)
EP97309097A 1996-11-12 1997-11-12 Sachet de protection congelable Withdrawn EP0841260A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9623552 1996-11-12
GBGB9623552.8A GB9623552D0 (en) 1996-11-12 1996-11-12 Freezable protective pouch

Publications (1)

Publication Number Publication Date
EP0841260A1 true EP0841260A1 (fr) 1998-05-13

Family

ID=10802829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97309097A Withdrawn EP0841260A1 (fr) 1996-11-12 1997-11-12 Sachet de protection congelable

Country Status (2)

Country Link
EP (1) EP0841260A1 (fr)
GB (1) GB9623552D0 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0926081A1 (fr) * 1997-12-23 1999-06-30 Edwin Francis Tattam Récipient de transport isolant
EP1029191A2 (fr) * 1997-10-13 2000-08-23 Thermal Clinical Solutions Ltd. Enveloppe thermique
WO2008000927A2 (fr) * 2006-06-29 2008-01-03 Sofrigam Sac isotherme
DE102011116693A1 (de) 2011-10-24 2013-04-25 Eutecma Gmbh Kühlvorrichtung
CN105129211A (zh) * 2015-08-27 2015-12-09 天津瀛德科技有限公司 充填式蓄冷包材及柔性蓄冷包装
CN105129237A (zh) * 2015-08-27 2015-12-09 天津瀛德科技有限公司 柔性蓄冷包装
CN105129238A (zh) * 2015-08-27 2015-12-09 天津瀛德科技有限公司 柔性蓄冷板
CN105129210A (zh) * 2015-08-27 2015-12-09 天津瀛德科技有限公司 蓄冷包装袋
CN105151540A (zh) * 2015-08-27 2015-12-16 天津瀛德科技有限公司 蓄冷包装袋
CN105151538A (zh) * 2015-08-27 2015-12-16 天津瀛德科技有限公司 蓄冷包装袋
CN105151539A (zh) * 2015-08-27 2015-12-16 天津瀛德科技有限公司 温感蓄冷包装袋
WO2021163446A1 (fr) * 2020-02-14 2021-08-19 Westrock Mwv, Llc Dispositifs de régulation thermique avec atténuation de la condensation
CN113716213A (zh) * 2021-08-28 2021-11-30 吉华盛(台州)供应链管理有限公司 一种便携环保的生鲜配送保冷装置
USD1043816S1 (en) 2023-01-24 2024-09-24 Temp Aid Corp. Shipping envelope with adhesive cover

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311022A (en) * 1980-04-18 1982-01-19 Hall John M Foldable ice pack
US4343158A (en) * 1981-03-23 1982-08-10 Campbell June H Portable pouch for insulin
DE3144702A1 (de) * 1981-11-11 1983-05-19 LP-Plast Gesellschaft zur Verarbeitung von Kunststoffen mbH, 5000 Köln Isolierbeutel
US4738364A (en) * 1987-03-24 1988-04-19 Medicool, Inc. Portable medicine protector
WO1989009913A1 (fr) * 1988-04-12 1989-10-19 John Kenneth Bethune Emballage refrigerant
US5237838A (en) * 1992-05-22 1993-08-24 Merritt Munson Carolann Portable refrigerated cosmetic carrying bag
WO1996013447A1 (fr) * 1994-10-31 1996-05-09 Claire Vianin Emballage isothermique
WO1997028064A1 (fr) * 1996-01-29 1997-08-07 Instar Pty. Ltd. Recipient flexible portatif destine a garder des articles froids

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311022A (en) * 1980-04-18 1982-01-19 Hall John M Foldable ice pack
US4343158A (en) * 1981-03-23 1982-08-10 Campbell June H Portable pouch for insulin
DE3144702A1 (de) * 1981-11-11 1983-05-19 LP-Plast Gesellschaft zur Verarbeitung von Kunststoffen mbH, 5000 Köln Isolierbeutel
US4738364A (en) * 1987-03-24 1988-04-19 Medicool, Inc. Portable medicine protector
WO1989009913A1 (fr) * 1988-04-12 1989-10-19 John Kenneth Bethune Emballage refrigerant
US5237838A (en) * 1992-05-22 1993-08-24 Merritt Munson Carolann Portable refrigerated cosmetic carrying bag
WO1996013447A1 (fr) * 1994-10-31 1996-05-09 Claire Vianin Emballage isothermique
WO1997028064A1 (fr) * 1996-01-29 1997-08-07 Instar Pty. Ltd. Recipient flexible portatif destine a garder des articles froids

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1029191A2 (fr) * 1997-10-13 2000-08-23 Thermal Clinical Solutions Ltd. Enveloppe thermique
EP1029191A4 (fr) * 1997-10-13 2002-05-22 Thermal Clinical Solutions Ltd Enveloppe thermique
EP0926081A1 (fr) * 1997-12-23 1999-06-30 Edwin Francis Tattam Récipient de transport isolant
WO2008000927A2 (fr) * 2006-06-29 2008-01-03 Sofrigam Sac isotherme
FR2903091A1 (fr) * 2006-06-29 2008-01-04 Sofrigam Sa "sac isotherme"
WO2008000927A3 (fr) * 2006-06-29 2008-03-06 Sofrigam Sac isotherme
DE102011116693A1 (de) 2011-10-24 2013-04-25 Eutecma Gmbh Kühlvorrichtung
DE102011116693B4 (de) * 2011-10-24 2014-04-03 Eutecma Gmbh Kühlvorrichtung
CN105129211A (zh) * 2015-08-27 2015-12-09 天津瀛德科技有限公司 充填式蓄冷包材及柔性蓄冷包装
CN105129237A (zh) * 2015-08-27 2015-12-09 天津瀛德科技有限公司 柔性蓄冷包装
CN105129238A (zh) * 2015-08-27 2015-12-09 天津瀛德科技有限公司 柔性蓄冷板
CN105129210A (zh) * 2015-08-27 2015-12-09 天津瀛德科技有限公司 蓄冷包装袋
CN105151540A (zh) * 2015-08-27 2015-12-16 天津瀛德科技有限公司 蓄冷包装袋
CN105151538A (zh) * 2015-08-27 2015-12-16 天津瀛德科技有限公司 蓄冷包装袋
CN105151539A (zh) * 2015-08-27 2015-12-16 天津瀛德科技有限公司 温感蓄冷包装袋
WO2021163446A1 (fr) * 2020-02-14 2021-08-19 Westrock Mwv, Llc Dispositifs de régulation thermique avec atténuation de la condensation
CN113716213A (zh) * 2021-08-28 2021-11-30 吉华盛(台州)供应链管理有限公司 一种便携环保的生鲜配送保冷装置
USD1043816S1 (en) 2023-01-24 2024-09-24 Temp Aid Corp. Shipping envelope with adhesive cover

Also Published As

Publication number Publication date
GB9623552D0 (en) 1997-01-08

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