EP0847933B1 - Procédé de fabrication d'un matériau de couvercle et son utilisation - Google Patents

Procédé de fabrication d'un matériau de couvercle et son utilisation Download PDF

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Publication number
EP0847933B1
EP0847933B1 EP96810862A EP96810862A EP0847933B1 EP 0847933 B1 EP0847933 B1 EP 0847933B1 EP 96810862 A EP96810862 A EP 96810862A EP 96810862 A EP96810862 A EP 96810862A EP 0847933 B1 EP0847933 B1 EP 0847933B1
Authority
EP
European Patent Office
Prior art keywords
container
sealing layer
sealing
printing
carrier 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.)
Revoked
Application number
EP96810862A
Other languages
German (de)
English (en)
Other versions
EP0847933A1 (fr
Inventor
Claude Aloise Marbler
Raymond Gribling
René Parmentier
Eliane Pierron
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8225769&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0847933(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP96810862A priority Critical patent/EP0847933B1/fr
Priority to DE59610741T priority patent/DE59610741D1/de
Priority to US08/970,969 priority patent/US6127023A/en
Priority to CA002222297A priority patent/CA2222297A1/fr
Publication of EP0847933A1 publication Critical patent/EP0847933A1/fr
Application granted granted Critical
Publication of EP0847933B1 publication Critical patent/EP0847933B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24843—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] with heat sealable or heat releasable adhesive layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813—Heat or solvent activated or sealable
    • Y10T428/2817—Heat sealable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2843—Web or sheet containing structurally defined element or component and having an adhesive outermost layer including a primer layer

Definitions

  • the present invention relates to a method for producing cover material according to the preamble of claim 1.
  • Such The method is known, for example, from US Pat. No. 3,272,422.
  • containers such as deep-drawn or stretch-drawn containers or otherwise shaped container, to be provided with a flat annular shoulder at the opening and to cover such containers, especially after filling, the lid lies completely on the shoulder and, for example, by sealing or gluing to the Shoulder is fixed and sealed.
  • Such cups, bowls, menu bowls for example with one or more compartments, tapestries, small packaging, etc. are for example known for packaging all kinds of food, e.g. Dairy products, in particular yogurt, whipped cream, sour milk, sour cream, coffee cream, ready-made preparations of salads or half or full preserves, pre-cooked or otherwise prepared Dishes, drinks such as fruit and vegetable juices, drinking water etc.
  • the containers are filled and the lid material becomes endless from the roll about the containers to be covered, which run continuously in a packaging machine, bedeckelt.
  • the lid material provided with a sealing layer is made using a sealing tool sealed onto the edge of the container in the shoulder area of the container.
  • the cover material is, for example, by means of a punch or knife separated and the filled and covered containers isolated, resp. in groups isolated and packaged and brought to the trade.
  • the lid material can be made of different materials, depending on the requirements, his. Typical examples are metal foils coated on one or both sides with plastic are. Other lid materials are thermoplastic than monofilm or as a multilayer laminate. Other lid materials can be made from cellulosic materials, like cellophane or paper.
  • a sealing layer such as a sealing wax or provided with a sealing film, the sealing layer for example on both sides of the Lid material or at least on the inside of the finished packaging Side, i.e. pointing towards the interior of the container.
  • the lid material also serves as an information and advertising medium. For this reason the lid material is provided with a print or counter print on the outside.
  • the printing can be on the top, facing outwards on a finished container Layer.
  • the printing can also be done with a protective varnish or with be covered with a protective film or the top or the top layers of the cover material can be made of transparent or opaque materials and have a counter print.
  • the printed images can be single or multi-colored and applied in a printing unit become.
  • the lid material is produced, for example, in such a way that a carrier, such as a metal foil, a plastic film or a plastic film composite by lamination or calendering processed with one or more additional layers to form a multi-layer composite becomes.
  • a carrier such as a metal foil, a plastic film or a plastic film composite by lamination or calendering processed with one or more additional layers to form a multi-layer composite becomes.
  • the sealing layer is applied by painting or laminating.
  • the cover material for example in roll form, is replaced by a Printing unit directed.
  • On the side of the lid material that later faces the container can then be printed.
  • US 3,272,422 describes a reclosable packaging with a cover film, whose backing material is coated with a pressure sensitive adhesive, on which in turn a peelable layer is applied.
  • the peelable layer can e.g. be a sealing layer or on the peelable layer there can be a sealing layer for sealing the cover film be applied to the container.
  • To open the packaging slide the cover film along the peelable layer and adhesive layer detached from the container and again by means of the adhesive layer locked.
  • the peelable layer becomes full-surface applied to the lidding film, with a ring-shaped cutting knife Corresponding edge of the shoulder is cut into the peelable layer so that when opening the packaging the inner circular area of the peelable layer with the Cover film is lifted off.
  • the object of the present invention is to overcome these disadvantages and a method for Propose production of lid material, which is economical use of individual Materials and with which the lid material in a simplified manner can be manufactured.
  • this is achieved in that the inward-facing sealing layer in Form of a printed image attached to the substrate by means of a printing process the printed image corresponds to the shoulder area of the container.
  • the carrier material can be a monofilm made of plastic or a multilayer composite two or more plastic layers or a metal foil or a multilayer composite be made of at least one metal foil or and at least one plastic foil.
  • the carrier material can also consist of cellulosic material or cellulosic material contain.
  • the cellulose-containing material can be made on one or both sides, for example with plastic can be coated or can be metallized or can have a plastic layer on one side and have a metallized layer on the other side.
  • the plastics of the carrier material For example, polyolefins, such as polyethylenes or polypropylenes, polyamides, Be polyethylene terephthalate or polyvinylchloride.
  • metal foils Steel or aluminum foils can be used.
  • the carrier material can have a thickness of, for example, 15-500 ⁇ m, the carrier materials being made of plastic films or metal foils or of metal and plastic films preferably have a thickness of 15-150 ⁇ m, while Lid materials containing cellulose-containing materials, for example, a thickness of Show 60 - 500 ⁇ m.
  • the carrier materials are in particular so flexible that they too Roll goods (coils) can be wound.
  • Preferred carrier materials contain a transparent, opaque or opaque Film or a film composite, made of at least one plastic from the range of polyesters, polyolefins such as polyethylenes or polypropylenes, polyamides or cellulose or from a metal foil or a plastic-coated metal foil or a Laminate made of paper with a layer of plastic, e.g. a polyethylene terephthalate layer, which in turn can be metallized.
  • a transparent, opaque or opaque Film or a film composite made of at least one plastic from the range of polyesters, polyolefins such as polyethylenes or polypropylenes, polyamides or cellulose or from a metal foil or a plastic-coated metal foil or a Laminate made of paper with a layer of plastic, e.g. a polyethylene terephthalate layer, which in turn can be metallized.
  • the carrier material can also have a barrier layer against gases, vapors and moisture.
  • Barrier layers can - in addition to the metal foils mentioned - foils, for example made of plastics such as polyvinylidene chloride or ethyl vinyl alcohol, or it can be one Layer of ceramic materials, such as the oxides or nitrides of silicon or aluminum, be in a thin layer, e.g. in the range of 10 to 500 nanometers, in one Vacuum thin film processes have been deposited on a carrier film.
  • Barrier layers are metallic layers, e.g. made of aluminum by sputtering on be deposited on the carrier.
  • the substrate can be printed with all known printing processes, e.g. Book, offset, flexo, screen, Helio and copper intaglio printing.
  • Flexographic printing also called aniline or rubber printing
  • rotogravure such as copper gravure, or helio grout.
  • the printing on the outside of the carrier material can, for example, additionally by means of a protective lacquer can be painted over or by means of a laminating aid or an adhesive, a transparent Film, for example made of polyethylene terephthalate, polyamide, polyolefins, such as polyethylene or polypropylene or a cellophane layer.
  • a transparent Film for example made of polyethylene terephthalate, polyamide, polyolefins, such as polyethylene or polypropylene or a cellophane layer.
  • the sealing layer is in the form of a printed image attached to the carrier material.
  • the sealing layer can be the same or a prefix or rear-facing printing unit, in which the outside print image is generated, be applied to the carrier material.
  • the sealing layer can advantageously consist of one Primer and / or adhesion promoter and a sealing wax or can only be from a sealing wax his.
  • the use of a primer or adhesion promoter and a sealing wax is preferred.
  • the adhesion promoter, respectively. the primer and the sealing wax are successively in one Printing unit, for example by a book, offset, flexo, screen, helio, deep or Copper gravure printing, preferably by flexographic or helio printing, on the carrier material applied.
  • the sealing layer can be a sealing wax, for example from the series of polyolefins and preferably polyethylene, or the vinyl acrylic copolymer or the acrylic polymer-containing Varnishes or epoxy paints, contain or consist of.
  • the sealing layer can also the sealing wax and an adhesion promoter or primer, for example from the range of polyesters or vinyl polymers.
  • the coupling agent or primer is advantageous on the Carrier and the sealing wax applied to the adhesion promoter or primer.
  • a method for producing cover material according to the present invention is preferred where the inward-facing sealing layer and the outward-facing printing in can be applied to a printing unit by printing on both sides of the carrier material.
  • the present invention also relates to the use of cover material according to claim 9.
  • FIG. 1 shows, by way of example and schematically, a cup 1 made from side wall 2, bottom 3 and the upper edge, which forms the shoulder 4, after the cup 1 has been filled for example with a food or a drink, such as yogurt, jam, Dried fruit, a chocolate preparation or another dessert or with Drinking water or fruit and vegetable juices, the cup 1 is covered with the lid 10 and the lid 10 is sealed onto the cup 1 along the shoulder 4.
  • the lid 10 contains a carrier material 5, thereon a print 6 and a protective layer 7, for example in the form of a protective varnish or a protective film. On the against the container, respectively.
  • the facing side of the carrier material 5 is in the region of the shoulder 4 of the container 1, the sealing layer of primer 8 and sealing wax 9 only applied in places, namely, according to or approximately according to the image of the annular shoulder 4 of the cup 1.
  • the sealing layer of primer 8 and sealing wax 9 is applied only or essentially only at those locations on the carrier 5 which come into contact with shoulder 4. This is shown schematically by the dash-dotted lines indicated. For the present example, this would mean that the sealing layer 8,9 has been printed in a ring on the carrier 5. It goes without saying that that Print image of the sealing layer from the shoulder area 4 of the cup 1 may differ slightly.
  • the printed image of the sealing layer 8.9 be narrower, e.g. 1 to 50% narrower than the width of the shoulder of the container 4, or, um Compensating for machine inaccuracies can affect the area of the printed image of the sealing layer 8.9 by a few percent, such as 1 to 25%, larger than the contact area between cover material and shoulder area 4.
  • the present lid material can be sealed onto the edge of the container via the sealing layer become.
  • the sealing tool By the choice of the sealing tool, the sealing pressure and the sealing temperature the strength of the sea seam can be adjusted. Marking aids, for example in the form of weakly sealed sections in the sealed seam or by serrated sealing seam edges.
  • the printed one Sealant layer can also be glued with an adhesive, such as a contact adhesive or an adhesive that sets under heat and / or pressure. This with the proviso that the adhesive can be processed in a printing unit and the Adhesive can be printed on the lid material.
  • the present cover material has the advantage of being extremely economical with the starting materials deal, especially by the primer or adhesion promoter and sealing wax only sparingly is used where it is actually needed.
  • the primer or coupling agent is used in amounts of 0.2 to 30 g, preferably 3 to 20 g, per square meter and the sealing wax in quantities of 0.5 to 30 g, preferably 1.5 to 20 g, per square meter and in particular applied with 6 to 10 g per square meter.
  • the primer, resp. Adhesion promoter and the sealing wax usually for processing in the Printing machine must be absorbed in a solvent, the amount is reduced on the solvent to be evaporated considerably. This is expressed both in energy requirements and also in the amount of solvent.
  • the present procedure is further below advantageous because the production of the cover material is one machine less needed.
  • the sealing layer does not have to be applied separately as a layer or film, but can be applied in the same operation and occasionally in the application of the printed image same printing unit, can be applied.
  • the present invention can be either on roll goods or endless material or on isolated Lids are realized, the application of the sealing layer to continuous material can be done and the lid isolated by punching or cutting and processed can be or single covers can be punched out or made of endless cover material cut out and then the sealing layer can be printed on these individual lids become.
  • the individual covers can be used, for example, for the Printing process to be arranged adhering to an endless carrier tape.
  • the finished lids can furthermore a tear-open or grip tab and / or weakenings, for example in the form of perforations or scribing notches, which open the container by removing the lid.
  • the sealing layer on the lid essentially only in the shoulder area of the opposite Container is present, the risk that components from the Diffuse the sealing layer into the contents of the container and, for example, through the contents of the container Affect odors or flavors.
  • the present invention also makes it possible to be completely transparent or almost completely to create transparent lid materials by using the sealing wax only at the points of the Seal and not applied over the entire lid area and the properties of a completely transparent carrier material.
  • the transparent carrier materials deteriorate in their transparency by the sealing wax and Not primer.

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

Claims (9)

  1. Procédé de fabrication de matériau de couvercle (10) pour des récipients présentant une zone d'épaulement composés d'un matériau de support (5), comprenant une impression (6) renvoyant vers l'extérieur, liée à un récipient (1) sur lequel est utilisé le matériau de couvercle (10) et une couche de scellage renvoyant vers l'intérieur, pour fermer le récipient,
       caractérisé en ce que
       la couche de scellage renvoyant vers l'intérieur est aménagée sur le matériau de support (5) sous la forme d'un imprimé au moyen d'un procédé d'impression, moyennant quoi l'imprimé correspond à la zone d'épaulement du récipient (1).
  2. Procédé de fabrication de matériau de couvercle selon la revendication 1, caractérisé en ce que la couche de scellage renvoyant vers l'intérieur et l'impression (6) renvoyant vers l'extérieur sont appliquées dans un élément d'impression par une impression sur les deux côtés du matériau de support (5) continu.
  3. Procédé selon la revendication 1, caractérisé en ce que la couche de scellage comprend un vernis de scellage (9).
  4. Procédé selon la revendication 1, caractérisé en ce que la couche de scellage contient un agent adhésif et/ou une couche de fond (8) et un vernis de scellage (9).
  5. Procédé selon la revendication 1, caractérisé en ce que la couche de scellage contient un agent adhésif ou une couche de fond (8) de la série des polyesters ou des polymères vinyliques et un vernis de scellage (9) contenant des polyoléfines et de préférence des polyéthylènes, ou des polymères vinyle-acrylique ou des vernis à base de polymère acrylique ou des vernis époxy.
  6. Procédé selon la revendication 1, caractérisé en ce que le matériau de support (5) contient des matières plastiques thermoplastiques ou un cellophane ou un matériau à base de cellulose ou un film métallique ou une combinaison de ces matériaux.
  7. Procédé selon la revendication 6, caractérisé en ce que le matériau de support (5) contient une combinaison d'au moins une matière plastique thermoplastique et/ou d'un cellophane et/ou d'un matériau à base de cellulose et/ou d'un film métallique sous la forme d'un matériau composé à plusieurs couches.
  8. Procédé selon la revendication 6, caractérisé en ce que le matériau de support (5) contient une couche isolante contre le gaz, les vapeurs et l'humidité de la série des couches céramiques ou des couches métallisées ou d'un film en matière plastique ou d'un film métallique.
  9. Utilisation de matériau de couvercle (10) composé d'un matériau de support (5) comprenant une impression (6) renvoyant vers l'extérieur, liée au récipient (1) sur lequel est utilisé le matériau de couvercle (10) et une couche de scellage renvoyant vers l'intérieur, moyennant quoi la couche de scellage renvoyant vers l'intérieur est aménagée sur le matériau de support sous la forme d'un imprimé au moyen d'un procédé d'impression, et l'imprimé correspond à la zone d'épaulement du récipient (1) pour fermer par scellage le récipient (1) avec la zone d'épaulement correspondante du récipient (1).
EP96810862A 1996-11-12 1996-12-11 Procédé de fabrication d'un matériau de couvercle et son utilisation Revoked EP0847933B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP96810862A EP0847933B1 (fr) 1996-12-11 1996-12-11 Procédé de fabrication d'un matériau de couvercle et son utilisation
DE59610741T DE59610741D1 (de) 1996-12-11 1996-12-11 Verfahren zur Herstellung von Deckelmaterial sowie dessen Verwendung
US08/970,969 US6127023A (en) 1996-11-12 1997-11-13 Lid material
CA002222297A CA2222297A1 (fr) 1996-12-11 1997-11-26 Materiau d'operculage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96810862A EP0847933B1 (fr) 1996-12-11 1996-12-11 Procédé de fabrication d'un matériau de couvercle et son utilisation

Publications (2)

Publication Number Publication Date
EP0847933A1 EP0847933A1 (fr) 1998-06-17
EP0847933B1 true EP0847933B1 (fr) 2003-09-24

Family

ID=8225769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96810862A Revoked EP0847933B1 (fr) 1996-11-12 1996-12-11 Procédé de fabrication d'un matériau de couvercle et son utilisation

Country Status (4)

Country Link
US (1) US6127023A (fr)
EP (1) EP0847933B1 (fr)
CA (1) CA2222297A1 (fr)
DE (1) DE59610741D1 (fr)

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Also Published As

Publication number Publication date
EP0847933A1 (fr) 1998-06-17
US6127023A (en) 2000-10-03
CA2222297A1 (fr) 1998-06-11
DE59610741D1 (de) 2003-10-30

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