EP0234985B1 - Strahlungsdichter Behälter - Google Patents

Strahlungsdichter Behälter Download PDF

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Publication number
EP0234985B1
EP0234985B1 EP19870400126 EP87400126A EP0234985B1 EP 0234985 B1 EP0234985 B1 EP 0234985B1 EP 19870400126 EP19870400126 EP 19870400126 EP 87400126 A EP87400126 A EP 87400126A EP 0234985 B1 EP0234985 B1 EP 0234985B1
Authority
EP
European Patent Office
Prior art keywords
layer
container
laminate
radiation
tight
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
Application number
EP19870400126
Other languages
English (en)
French (fr)
Other versions
EP0234985A1 (de
Inventor
Guy Breger
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.)
GAJ Developpement Sas
Original Assignee
Guy Breger
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 Guy Breger filed Critical Guy Breger
Publication of EP0234985A1 publication Critical patent/EP0234985A1/de
Application granted granted Critical
Publication of EP0234985B1 publication Critical patent/EP0234985B1/de
Expired 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
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/30—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants by excluding light or other outside radiation

Definitions

  • the present invention relates to a container or packaging, impervious to radiation at least in a sealing zone, and intended to protect its content against them, produced with a laminate comprising at least one layer impermeable to this radiation.
  • a radiation-tight container in this case X-rays, produced from a laminate comprising a sheet impermeable to radiation, in this case a sheet of lead or aluminum, placed between two sheets of plastic, in this case polyethylene or polyester.
  • Such a container, or packaging, or cover can be used to contain photographic film, electronic equipment, magnetic recording media, such as discs, tapes or cassettes, etc., for their transport, shipment , their archiving, and protect them against external electromagnetic and ionizing radiation, for example when going through airport security checks.
  • this packaging formed as previously described, has serious drawbacks and in particular the following. If it constitutes a barrier against radiation, moreover more or less effective, in particular in the case of particularly sensitive photographic films, it favors, because of the internal layer of plastic material, and concomitantly with the introduction into the container. of plastic materials or devices, of electrostatic charges prejudicial to the good conservation of the information of these materials and other supports. In short, such a container, while offering a solution to one problem, nevertheless creates another.
  • British patent application 2,060,488 discloses a container for light-sensitive materials produced in a laminate, the inner layer of which is made of high density polyethylene loaded with carbon, which makes it less electrifiable and gives it certain properties. antistatic.
  • the present invention therefore aims to provide a container treating both the problem of protection against radiation and the problem of electrostatic charges.
  • the present invention therefore relates to a container or packaging, impervious to radiation at least in a sealing zone and intended to protect its content against them, produced with a laminate comprising, in said sealing zone, at least one impermeable layer. to these radiations, characterized in that the internal layer of the laminate of the container is an electrically conductive layer and the impermeable layer extends only over a so-called filtering zone.
  • the container of the invention provided with an electrically conductive internal layer, and preferably metallic, is truly non-electrifiable, and the contents mentioned above can be stored there without risk.
  • non-electrifiable material means any material that is not electrifiable both by influence and by contact, that is to say that it cannot undergo, or practically not, electrification by influence or by contact.
  • the impermeable layer extending only over a filtering zone, it only protects certain parts of the contents of the container by carrying out local filtering of the desired radiation.
  • the container of the invention finds another application in the thawing and cooking by microwave radiation of frozen products, so as to selectively expose directly and also by reflection on the partial sealed area certain parts of the products and obtain a more intense cooking of these, for example to brown a cooked dish.
  • the laminate comprises an outer layer of relatively rigid thermal insulating material.
  • the container of the invention has the advantage of being able to easily receive, on its external layer serving as a support for commercial information. , not to mention its mailing which is also facilitated.
  • the layers of the laminate of the container of the invention are assembled by an adhesive without solvent, contrary to the known container, which eliminates any risk of migration of solvent not only on the overall content of the container but also, and more particularly, on the binder of metallic particles of magnetic supports when there are.
  • the laminate in which a strip is cut from which one forms, or realizes, the container, or packaging, will only be described after precisely the process for producing the container of the invention, and more particularly here of a pouch intended to protect a frozen food product.
  • the strip is folded along two straight lines 1, 2 parallel to the two longitudinal edges 3, 4 of the strip, and it is folded outwards along a third straight line 5, parallel to the same edges and extending between fold 2 and edge 4, the portion of strip adjacent to edge 4 to be able to fold down the portion of strip comprised between edge 3 and fold 1 on the portion of strip comprised between edge 4 and fold 5, edges 3 , 4 then extending one over the other.
  • This double folded portion 6, 7, 8 is then fixed on the portion adjacent to the fold 8 of the rest of the sleeve, in order to close the latter on one side and finally obtain a pocket without bellows which it will suffice subsequently to close from the on the other side as before, after the content has been introduced, in this case a disc, so that it performs the protective function.
  • These last two fixing steps are carried out by the same means as the first.
  • the starting strip is a laminate comprising an outer layer 11 of relatively rigid thermal insulating material, here flame retardant, a partial intermediate layer 12 impermeable to radiation, and an inner layer 13 electrically conductive, here metallic, not or difficult to electrify.
  • the inner layer one can for example consider a film or a coating layer of a metal or a metallic compound.
  • the outer layer one can consider cardboard, reinforced paper, a layer of polyester, or another nonwoven support, for example.
  • the lead of the internal layer is tinned, for the laminating of the paper that the applicant has produced using an adhesive without solvent or aqueous.
  • the intermediate partial layer 12 one can proceed as follows.
  • a layer for example, of aluminum from 5 nm to 65 nm (50 to 650 A) is deposited under vacuum.
  • a protective film of varnish is deposited on the aluminum layer, depending on the desired pattern, here to obtain the only partial layer, and using a mask.
  • a corrosive chemical for example caustic soda diluted to 10%, which attacks the metal layer in places not protected by the varnish. It is then washed with water, the varnish then also being removed if it is soluble. Finally, we dry. In places not covered by the metal layer, the outer layer becomes transparent. Note that this transparency can thus be obtained by electrolytic anodization of the metal layer, which, in this case, will retain its barrier characteristics in its entirety.
  • the assembly of the laminate layers of the invention in this case glue, on the one hand, and the various folds of the strip of base, on the other hand, also participate in this screen function.
  • the pouch of Figure 1 with its covering portion 3, 4, 5, is particularly well suited for the protection of its contents.
  • this covering is not limitative of the invention, the latter in another embodiment, which may have two edges of strip simply fixed to one another ( Figure 3), the pouch of the invention can also be made from two strips of material.
  • the laminate described above can therefore be used in the production of pouches intended to contain frozen foodstuffs. It can also be very suitable for making pockets not specially provided for this purpose, but which we want to be sure that they are well sealed. Indeed, the laminate described above allows effective control of the welds. If, in the case of bags for frozen products, the intermediate partial layer will be only about 5 nm thick, on the other hand, for the control of the welds, it will be preferable to increase this thickness up to at least 35 nm .

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Wrappers (AREA)

Claims (5)

1. Behältnis, das in mindestens einer Undurchlässigkeitszone undurchlässig für Strahlen und dafür bestimmt ist, seinen Inhalt vor ihnen zu schützen, ausgeführt mit einem Schichtstoff, der in der besagten Zone mindestens eine Schicht (12) aufweist, die für diese Strahlen undurchlässig ist, dadurch gekennzeichnet, daß die innere Schicht (13) des Schichtstoffes des Behältnisses eine leitende Schicht ist und sich die undurchlässige Schicht (12) nur über eine sogenannte Filterzone erstreckt.
2. Behältnis nach Anspruch 1, bei welchem die undurchlässige Schicht (12) zwischen einer äußeren Schicht (11) und der leitenden Schicht (13) angeordnet ist.
3. Behältnis nach einem der Ansprüche 1 und 2, bei welchem der Schichtstoff eine äußere Schicht (11) aus einem verhältnismäßig steifen wärmeisolierenden Material aufweist.
4. Behältnis nach einem der Ansprüche 1 bis 3, bei welchem der Schichtstoff eine äußere Schicht (11) aus Papier und eine undurchlässige Schicht (12) aus Metall aufweist.
5. Behältnis nach einem der Ansprüche 1 bis 4, bei welchem die Schichten (11, 12, 13) des Schichtstoffes mit einem lösungsmittelfreien Klebstoff aufeinanderkaschiert sind.
EP19870400126 1986-01-21 1987-01-20 Strahlungsdichter Behälter Expired EP0234985B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8600766 1986-01-21
FR8600766A FR2593149B1 (fr) 1986-01-21 1986-01-21 Recipient etanche aux rayonnements.

Publications (2)

Publication Number Publication Date
EP0234985A1 EP0234985A1 (de) 1987-09-02
EP0234985B1 true EP0234985B1 (de) 1989-10-25

Family

ID=9331306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870400126 Expired EP0234985B1 (de) 1986-01-21 1987-01-20 Strahlungsdichter Behälter

Country Status (5)

Country Link
EP (1) EP0234985B1 (de)
DE (1) DE3760868D1 (de)
ES (1) ES2012085B3 (de)
FR (1) FR2593149B1 (de)
GR (1) GR3000320T3 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350660A3 (de) * 1988-07-13 1992-01-02 Societe Des Produits Nestle S.A. Vorrat von Verbundfolien zum Mikrowellenaufheizen und Behälter
FR2718384B1 (fr) * 1994-04-06 1996-06-21 Plastic Omnium Cie Procédé pour réaliser un boîtier en matière plastique comportant une isolation électromagnétique de sa cavité intérieure.
DE19603268A1 (de) * 1996-01-30 1997-07-31 Riedel Manfred Dipl Ing Fh Elektrisch leitfähige Montage-Verpackungen für elektonische Bauteile (SMD-Verpackungen bzw. Blistergurte)
BR112015002327B1 (pt) 2012-08-24 2021-07-13 Graphic Packaging International, Llc Material para formar uma embalagem para acondicionar uma pluralidade de artigos, embalagem para acondicionar a pluralidade de artigos, blanqueta para formar uma embalagem para acondicionar a pluralidade de artigos a pluralidade de artigos, método de formar uma embalagem para conter uma pluralidade de artigos, e material para formar uma embalagem para acondicionar uma pluralidade de artigos

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852118Y2 (ja) * 1976-12-25 1983-11-28 三井化学株式会社 包装材料用複合プラスチツクフイルム
JPS5632139A (en) * 1979-08-23 1981-04-01 Fuji Photo Film Co Ltd Packing material for photosensitive material

Also Published As

Publication number Publication date
ES2012085B3 (es) 1990-03-01
FR2593149A1 (fr) 1987-07-24
FR2593149B1 (fr) 1989-02-03
DE3760868D1 (en) 1989-11-30
GR3000320T3 (en) 1991-06-07
EP0234985A1 (de) 1987-09-02

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