EP0301148B1 - Insulated bag - Google Patents

Insulated bag Download PDF

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Publication number
EP0301148B1
EP0301148B1 EP87440055A EP87440055A EP0301148B1 EP 0301148 B1 EP0301148 B1 EP 0301148B1 EP 87440055 A EP87440055 A EP 87440055A EP 87440055 A EP87440055 A EP 87440055A EP 0301148 B1 EP0301148 B1 EP 0301148B1
Authority
EP
European Patent Office
Prior art keywords
sheets
bags
polyethylene
insulated bag
welding
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.)
Expired - Lifetime
Application number
EP87440055A
Other languages
German (de)
French (fr)
Other versions
EP0301148A1 (en
Inventor
Luigi Frateschi
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 AT87440055T priority Critical patent/ATE70019T1/en
Publication of EP0301148A1 publication Critical patent/EP0301148A1/en
Application granted granted Critical
Publication of EP0301148B1 publication Critical patent/EP0301148B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the present invention relates to a process for the manufacture of bags intended for the transport of so-called frozen products, which must be carried out in isothermal conditions for the preservation of these products, these bags comprising double walls made of polyethylene sheet, the material ensuring the spacing between the two walls consisting of a sheet of known type, being in the form of a thin film of polyethylene on one side of which are distributed bubbles or blisters filled with air.
  • the method according to the invention is of the continuous type, and consists in simultaneously simultaneously extruding two sheets of polyethylene, in folding together along their center these two sheets, in simultaneously causing the welding and the cutting at equal longitudinal intervals of the product formed. by the two sheets thus folded, to constitute blanks for bags, to insert between the two walls a bubble wrap as defined above and finally to weld on the outer edges of this blank reinforcement strips comprising handles, this welding simultaneously immobilizing the corresponding edges of the bubble wrap.
  • This welding has a multiple role: to stiffen the two edges of the bags, to immobilize the edge of the films 3-4 to prevent them from sliding at the bottom of the space between the sheets 1-2, and to ensure, by systems with snaps 7-8, closing the top of the bags.
  • the final product C obtained at the end of the operation, conforms to that illustrated in section on a larger scale in FIG. 1.
  • the bag has a continuous double wall, the two faces of which are kept at constant distance by air bubbles 4, themselves providing thermal insulation, without affecting the flexibility of this wall, provided by the thinness of the film 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Buffer Packaging (AREA)
  • Laminated Bodies (AREA)

Abstract

Insulated bag of the type with a double wall, consisting of a pair of polyethylene sheets (1, 2) held apart by a material (3) ensuring the presence of a layer of air, characterised in that the said material is of the type formed by a thin and flexible film which carries, on one face, bubbles or blisters of constant thickness and which are uniformly distributed over this face. <IMAGE>

Description

La présente invention concerne un procédé pour la fabrication de sacs destinés au transport des produits dits surgelés, qui doit s'effectuer en conditions isothermes pour la préservation de ces produits, ces sacs comportant des doubles parois en feuille de polyéthylène, le matériau assurant l'écartement entre les deux parois étant constitué par une feuille de type connu, se présentant sous forme d'une pellicule mince de polyéthylène sur une face de laquelle sont réparties des bulles ou boursouflures remplies d'air.The present invention relates to a process for the manufacture of bags intended for the transport of so-called frozen products, which must be carried out in isothermal conditions for the preservation of these products, these bags comprising double walls made of polyethylene sheet, the material ensuring the spacing between the two walls consisting of a sheet of known type, being in the form of a thin film of polyethylene on one side of which are distributed bubbles or blisters filled with air.

Des sacs de ce genre sont décrits dans les documents EP-A-174 159 et EP-A-85 534.Bags of this kind are described in documents EP-A-174,159 and EP-A-85,534.

Le procédé selon l'invention est du type continu, et consiste à extruder en continu simultanément deux feuilles de polyéthylène , à replier ensemble le long de leur milieu ces deux feuilles, à provoquer simultanément la soudure et la coupe à intervalles longitudinaux égaux du produit constitué par les deux feuilles ainsi repliées, pour constituer des ébauches de sacs, à insérer entre les deux parois une pellicule à bulles telle que définie ci-dessus et enfin à souder sur les bords extérieurs de cette ébauche des bandes de renforcement comportant des poignées, cette soudure immobilisant en même temps les bords correspondants des pellicules à bulles.The method according to the invention is of the continuous type, and consists in simultaneously simultaneously extruding two sheets of polyethylene, in folding together along their center these two sheets, in simultaneously causing the welding and the cutting at equal longitudinal intervals of the product formed. by the two sheets thus folded, to constitute blanks for bags, to insert between the two walls a bubble wrap as defined above and finally to weld on the outer edges of this blank reinforcement strips comprising handles, this welding simultaneously immobilizing the corresponding edges of the bubble wrap.

On comprendra mieux l'invention en se référant à la description suivante illustrée par le dessin annexé, sur lequel :

  • la figure 1 représente en coupe transversale un sac fabriqué selon l'invention, et
  • la figure 2 illustre schématiquement le procédé selon l'invention.
The invention will be better understood by referring to the following description illustrated by the appended drawing, in which:
  • FIG. 1 represents in cross section a bag made according to the invention, and
  • FIG. 2 schematically illustrates the method according to the invention.

Sur ce dessin, on a représenté en 1 et 2 les deux feuilles de polyéthylène destinées à constituer les doubles parois d'un sac C, arrivant parallèlement d'une tête d'extrusion (non représentée). Ces deux feuilles sont progressivement repliées le long de leur axe longitudinal XX', de manière à former un produit plat P, qui est alors soumis à intervalles longitudinaux égaux à une soudure-coupe, schématisée par S, donnant naissance à des ébauches E de sacs, à double paroi continue, 1-2. Entre les feuilles 1 et 2, on insère alors des pellicules 3 portant des bulles ou boursouflures et occupant la totalité de l'espace entre les feuilles 1 et 2. Enfin, sur les bords extérieurs des ébauches E, on soude des bandes 5, comportant des poignées 6. Cette soudure a un rôle multiple : rigidifier les deux bords des sacs, immobiliser le bord des pellicules 3-4 pour les empêcher de glisser au fond de l'espace entre les feuilles 1-2, et assurer, par des systèmes à boutons-pressions 7-8, la fermeture du haut des sacs.In this drawing, there are shown in 1 and 2 the two polyethylene sheets intended to constitute the double walls of a bag C, arriving in parallel with an extrusion head (not shown). These two sheets are progressively folded along their longitudinal axis XX ', so as to form a flat product P, which is then subjected at equal longitudinal intervals to a weld-cut, shown diagrammatically by S, giving rise to blanks E of bags. , double wall continuous, 1-2. Between the sheets 1 and 2, films 3 are then inserted bearing bubbles or blisters and occupying the entire space between the sheets 1 and 2. Finally, on the outer edges of the blanks E, strips 5 are welded, comprising handles 6. This welding has a multiple role: to stiffen the two edges of the bags, to immobilize the edge of the films 3-4 to prevent them from sliding at the bottom of the space between the sheets 1-2, and to ensure, by systems with snaps 7-8, closing the top of the bags.

Le produit final C, obtenu en fin d'opération, est conforme à celui illustré en coupe à plus grande échelle sur la figure 1. Le sac possède une double paroi continue dont les deux faces sont maintenues à distance constante par les bulles d'air 4, assurant elles-mêmes l'isolation thermique, sans nuire à la souplesse de cette paroi, assurée par la minceur de la pellicule 3.The final product C, obtained at the end of the operation, conforms to that illustrated in section on a larger scale in FIG. 1. The bag has a continuous double wall, the two faces of which are kept at constant distance by air bubbles 4, themselves providing thermal insulation, without affecting the flexibility of this wall, provided by the thinness of the film 3.

Claims (1)

  1. A method for the manufacture of insulating bags of the double walled type comprising a pair of sheets (1, 2) of polyethylene separated by a thin flexible film (3) which has regularly distributed bubbles (4) of constant thickness on one side, characterised in that it consists of simultaneously and continuously extruding two sheets (1, 2) of polyethylene, folding these two sheets along the centre, simultaneously welding and cutting the product formed by these two sheets when so folded at regular longitudinal intervals (S) in order to form the rough shapes (E) for bags, inserting the bubble film (4) between the two sheets (1, 2), and finally welding reinforcing strips (5) incorporating handles (6) onto the outer edges of this rough shape, this weld at the same time immobilising the corresponding edges of the bubble film.
EP87440055A 1987-07-31 1987-09-17 Insulated bag Expired - Lifetime EP0301148B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87440055T ATE70019T1 (en) 1987-07-31 1987-09-17 INSULATION BAG.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8711085A FR2618765B1 (en) 1987-07-31 1987-07-31 COOLER BAG
FR8711085 1987-07-31

Publications (2)

Publication Number Publication Date
EP0301148A1 EP0301148A1 (en) 1989-02-01
EP0301148B1 true EP0301148B1 (en) 1991-12-04

Family

ID=9353885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87440055A Expired - Lifetime EP0301148B1 (en) 1987-07-31 1987-09-17 Insulated bag

Country Status (6)

Country Link
EP (1) EP0301148B1 (en)
JP (1) JPS6458684A (en)
AT (1) ATE70019T1 (en)
DE (1) DE3775056D1 (en)
FR (1) FR2618765B1 (en)
MC (1) MC1842A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0356543U (en) * 1989-10-03 1991-05-30
IL111492A (en) * 1994-11-01 1998-02-08 Oria Ltd Ltd Insulative bottle holder
US5595320A (en) * 1994-12-01 1997-01-21 Aghassipour; Xerxes K. Insulated bag for beer keg
US5706969A (en) * 1995-03-27 1998-01-13 Nippon Sanso Corporation Insulated container, insulating material, and manufacturing method of the insulated container
JPH1047712A (en) * 1996-08-06 1998-02-20 Kansai Electric Power Co Inc:The Cooling and heating system
US6200029B1 (en) * 2000-01-05 2001-03-13 David G. Bonta Heat retaining container and method of forming same
FR2845352B1 (en) * 2002-10-08 2005-09-30 Papiers Paviot PROCESS FOR PACKAGING PERISHABLE PRODUCTS, IN PARTICULAR FOOD, AND PACKAGING FOR THE IMPLEMENTATION OF THE PROCESS
WO2006095038A2 (en) * 2005-03-11 2006-09-14 Sensigrade Limited Isothermal container comprising a refrigeration element
CN104603021B (en) * 2012-08-06 2019-08-06 宝洁公司 The method for manufacturing flexible container
JP6569028B2 (en) * 2017-10-05 2019-08-28 奈津子 小川 Cold insulation packaging material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394390A1 (en) * 1977-06-16 1979-01-12 Peckre Freres Et Turpin Ets METHOD OF MANUFACTURING A FLAT MULTI-LAYER PACKAGING AND PACKAGING THUS MANUFACTURED
DE8202094U1 (en) * 1982-01-28 1982-07-01 AOE Plastic GmbH, 8000 München Insulating container, in particular insulating bag or insulating bag
GB2163724B (en) * 1984-08-30 1988-09-28 Douglas Kitchener Gatward Insulated carrier bag
GB2201394A (en) * 1986-06-30 1988-09-01 Nomix Mfg Co Ltd Flexible container for liquids

Also Published As

Publication number Publication date
FR2618765B1 (en) 1990-01-26
FR2618765A1 (en) 1989-02-03
ATE70019T1 (en) 1991-12-15
JPS6458684A (en) 1989-03-06
MC1842A1 (en) 1988-09-30
EP0301148A1 (en) 1989-02-01
DE3775056D1 (en) 1992-01-16

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