EP0160975A2 - Feuille multicouche scellable à chaud ou à froid pour emballages avec ouverture déchirable et refermable - Google Patents

Feuille multicouche scellable à chaud ou à froid pour emballages avec ouverture déchirable et refermable Download PDF

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Publication number
EP0160975A2
EP0160975A2 EP85105604A EP85105604A EP0160975A2 EP 0160975 A2 EP0160975 A2 EP 0160975A2 EP 85105604 A EP85105604 A EP 85105604A EP 85105604 A EP85105604 A EP 85105604A EP 0160975 A2 EP0160975 A2 EP 0160975A2
Authority
EP
European Patent Office
Prior art keywords
layer
cold
film according
multilayer film
cover layer
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
EP85105604A
Other languages
German (de)
English (en)
Other versions
EP0160975B1 (fr
EP0160975A3 (en
Inventor
Alfons Dr. Lamping
Beat Karth
Werner Hiltbrunner
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.)
Nyffeler Corti AG
Original Assignee
Nyffeler Corti AG
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 Nyffeler Corti AG filed Critical Nyffeler Corti AG
Publication of EP0160975A2 publication Critical patent/EP0160975A2/fr
Publication of EP0160975A3 publication Critical patent/EP0160975A3/de
Application granted granted Critical
Publication of EP0160975B1 publication Critical patent/EP0160975B1/fr
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
    • 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
    • B65D77/2068—Means for reclosing the cover after its first opening
    • B65D77/2096—Adhesive means
    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • 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
    • B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
    • B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
    • B65D77/2044—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2041—Pull tabs
    • B65D2577/205—Pull tabs integral with the closure
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
    • Y10T428/1307—Bag or tubular film [e.g., pouch, flexible food casing, envelope, etc.]
    • 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
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    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • Y10T428/1338—Elemental metal containing
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • Y10T428/1341—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1355—Elemental metal containing [e.g., substrate, foil, film, coating, etc.]
    • Y10T428/1359—Three or more layers [continuous 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1379—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
    • 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
    • Y10T428/14—Layer or component removable to expose adhesive
    • Y10T428/1424—Halogen containing compound
    • 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
    • Y10T428/14—Layer or component removable to expose adhesive
    • Y10T428/1452—Polymer derived only from ethylenically unsaturated monomer
    • 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
    • Y10T428/2826—Synthetic resin or polymer
    • 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
    • Y10T428/2848—Three or more layers
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31725—Of polyamide
    • Y10T428/3175—Next to addition polymer from unsaturated monomer[s]
    • Y10T428/31757—Polymer of monoethylenically unsaturated hydrocarbon
    • 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
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    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y10T428/31895—Paper or wood
    • 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
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    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/3188—Next to cellulosic
    • Y10T428/31895—Paper or wood
    • Y10T428/31906—Ester, halide or nitrile of addition polymer
    • 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
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    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31913—Monoolefin polymer
    • Y10T428/31917—Next to polyene polymer
    • 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
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    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31913—Monoolefin polymer
    • Y10T428/3192—Next to vinyl or vinylidene chloride polymer
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31924—Including polyene monomers
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31935—Ester, halide or nitrile of addition polymer
    • 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
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31938—Polymer of monoethylenically unsaturated hydrocarbon

Definitions

  • the invention relates to a cold-sealable or heat-sealable multilayer film for reclosable packaging, which can be used both as a sealing membrane for preformed containers and even for the formation of containers, and which results in hermetically sealed closures during cold or heat sealing, which after being opened for the first time opens several times from ' Can be closed by hand.
  • Cold-sealable or heat-sealable multilayer films which serve as sealing membranes for containers or can even be formed into containers, are already known.
  • Conventional multilayer films of this type have the disadvantage that packaging made therefrom either cannot be closed again at all after opening, or at least cannot be simply put together by hand.
  • cold-sealable films can be closed by hand, but only with the use of relatively high pressure and only by pressing two cold-sealable coated surfaces against one another.
  • the cold seal coatings also have the disadvantage that they are slightly sticky and therefore cannot be brought into contact with any filling material, e.g. not with dusting goods.
  • the object of the invention is therefore to provide a cold or heat-sealable multilayer film for reclosable packaging which, after the cold or heat-seal connection has been opened for the first time, without any particular effort by simply pressing the opened part onto any point of the multilayer film or onto a suitable surface of another object , e.g. of the open container edge, can be closed one or more times.
  • the invention relates to a cold or heat-sealable multilayer film for reclosable packaging, which is characterized in that it has a permanent adhesive layer on a carrier film, which has a cover layer made of a material with low elongation at break and tear resistance on the side facing away from the carrier film.
  • This material can itself be cold-sealable or heat-sealable, so that no special sealing layer is required. Otherwise, a cold or heat seal layer made of conventional cold or heat seal media is applied to the cover layer.
  • the multilayer film shown in FIG. 1 consists of a carrier film 1, a permanently adhesive layer 2, a cover layer 3 and a sealing layer 4.
  • Suitable materials for the carrier film 1 are, for example, polyester, such as polyethylene terephthalate, polyamide, biaxially oriented polypropylene, cellophane, polyvinyl chloride, Metals, such as aluminum, and paper.
  • the permanently adhesive layer 2 consists, for example, of hot melt adhesives based on ethylene-vinyl acetate copolymers, styrene-butadiene-styrene block copolymers, styrene-isoprene-styrene block copolymers or polyacrylates or other suitable pressure-sensitive adhesives.
  • the cover layer 3 consists of a material with low elongation at break and tear resistance of a suitable layer thickness.
  • Preferred materials of this type are polyethylene, polypropylene, polyamide, polyvinyl chloride, polycarbonate, polystyrene, hot melts based on ethylene-vinyl acetate copolymers, cellular glass and metals such as aluminum.
  • cover layer 3 itself is sealable, as is the case with polyethylene, a separate seal layer is not necessary. Otherwise, a sealing layer 4 made of conventional cold or heat sealing media is applied to the cover layer.
  • a multilayer film of the type shown in Fig. 1 is used as a sealing membrane on the opening of a preformed container 5, e.g. of a cup, sealed and later completely or partially separated from the container edge with the aid of a tear-off tab, the cover layer 3 tears at the beginning of the opening process. As the sealing seam tears open, the covering layer 3 remains on the container edge due to its low tear resistance in the area of the sealing seam. The permanent adhesive layer 2 is thereby exposed. To close the container again, simply place the seam surfaces on top of each other and press them lightly against each other.
  • the multilayer film itself serves as packaging material for an object 6.
  • the packaging is shown in the unopened state in FIG. 2a, in the opened and reclosed state in FIG. 2b.
  • the multilayer film comprising a carrier film 1, a permanently adhesive layer 2, a covering layer 3 of a material of low elongation at break and tear propagation resistance, as well as optionally a seal layer 4.
  • a carrier film 1 a permanently adhesive layer 2
  • a covering layer 3 of a material of low elongation at break and tear propagation resistance as well as optionally a seal layer 4.
  • For the individual layers can ig same materials as in the embodiment of F. 1 can be used.
  • Fig. 2b a part of the packaged item, e.g. chocolate, already removed, and the folding closure is closed again at another point.
  • the covering layer 3 with an adhesive layer 5 on the side facing the permanently adhesive layer 2, in order to avoid cohesive failure of the layer 2 and to obtain a non-adhesive side of the torn seam.
  • Suitable abhesive materials for layer 5 are e.g. Silicones.
  • predetermined breaking points in the form of weakening lines can be created in the cover layer along the desired tear line, e.g. with the help of suitable sealing tools. This also makes it possible to keep the tearing force of the cover layer lower than the cohesive force of the sealing seam.
  • the carrier film of the multilayer film according to the invention is available for decorative purposes and can, for example be printed. This creates the possibility of using the multilayer film peeled off from the opened packaging due to its self-adhesive properties for other purposes, for example sticking it onto other substrates.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Packages (AREA)
EP85105604A 1984-05-07 1985-05-07 Feuille multicouche scellable à chaud ou à froid pour emballages avec ouverture déchirable et refermable Expired - Lifetime EP0160975B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3416755 1984-05-07
DE19843416755 DE3416755A1 (de) 1984-05-07 1984-05-07 Kalt- oder heisssiegelbare mehrschichtfolie fuer wiederverschliessbare verpackungen

Publications (3)

Publication Number Publication Date
EP0160975A2 true EP0160975A2 (fr) 1985-11-13
EP0160975A3 EP0160975A3 (en) 1987-04-15
EP0160975B1 EP0160975B1 (fr) 1990-03-28

Family

ID=6235094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105604A Expired - Lifetime EP0160975B1 (fr) 1984-05-07 1985-05-07 Feuille multicouche scellable à chaud ou à froid pour emballages avec ouverture déchirable et refermable

Country Status (3)

Country Link
US (1) US4673601A (fr)
EP (1) EP0160975B1 (fr)
DE (2) DE3416755A1 (fr)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262652A1 (fr) * 1986-09-30 1988-04-06 Idemitsu Petrochemical Co. Ltd. Couvercle pour emballage facile à ouvrir
FR2628071A1 (fr) * 1988-03-04 1989-09-08 Alsacienne Aluminium Opercule pour la fermeture de recipients tels que des pots et des barquettes
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EP0262652A1 (fr) * 1986-09-30 1988-04-06 Idemitsu Petrochemical Co. Ltd. Couvercle pour emballage facile à ouvrir
EP0305976A3 (en) * 1987-08-31 1990-03-14 Sumitomo Bakelite Company Limited Easily openable sealed container
FR2628071A1 (fr) * 1988-03-04 1989-09-08 Alsacienne Aluminium Opercule pour la fermeture de recipients tels que des pots et des barquettes
EP0334700A1 (fr) * 1988-03-04 1989-09-27 SOCIETE ALSACIENNE D'ALUMINIUM Société Anonyme Procédé permettant la fermeture puis l'ouverture de récipients stérilisables, opercules permettant la mise en oeuvre dudit procédé et procédé de fabrication desdits opercules
US5145737A (en) * 1988-03-04 1992-09-08 Societe Alsacienne D'aluminium System for closure and subsequent opening of sterilizable containers
FR2669607A1 (fr) * 1990-11-26 1992-05-29 Torterotot Couvercle souple de securite refermable.
FR2686578A1 (fr) * 1992-01-27 1993-07-30 Alsacienne Aluminium Recipient, notamment pot ou barquette, comportant un opercule de refermeture pourvu d'une couche de vernis a pouvoir adherent permanent.
EP0554152A1 (fr) * 1992-01-27 1993-08-04 SOCIETE ALSACIENNE D'ALUMINIUM Société Anonyme Récipient, notamment pot ou barquette, comportant un opercule de refermeture pourvu d'une couche de vernis à pouvoir adhérent permanent
WO1994024019A2 (fr) * 1993-04-21 1994-10-27 Allergan, Inc. Recipients pour lentilles corneennes et leur mode d'emploi
WO1994024019A3 (fr) * 1993-04-21 1994-12-22 Allergan Inc Recipients pour lentilles corneennes et leur mode d'emploi
EP0661154A1 (fr) * 1993-12-28 1995-07-05 SAFTA S.p.A. Feuille composite pour la refermeture de conteneurs
FR2741605A1 (fr) * 1995-11-29 1997-05-30 Soplaril Sa Structure d'obturation pour un contenant, contenant muni de cette structure et procede d'obturation du contenant
WO1997019867A1 (fr) * 1995-11-29 1997-06-05 Soplaril S.A. Structure d'obturation pour un contenant
US6302290B1 (en) 1995-11-29 2001-10-16 Atofina Container sealing assembly
EP1074482B1 (fr) * 1995-11-29 2003-12-17 Soplaril Sa Structure d'obturation pour un contenant
EP1074482A1 (fr) * 1995-11-29 2001-02-07 Soplaril S.A: Structure d'obturation pour un contenant
DE19548179A1 (de) * 1995-12-22 1997-07-03 Helio Folien Gmbh Verpackungsbeutel
FR2758792A1 (fr) * 1997-01-29 1998-07-31 Fleury Michon Charcuterie Procede de fabrication d'un conditionnement refermable pour produits alimentaires
EP0881156A1 (fr) * 1997-05-29 1998-12-02 Illinois Tool Works Inc. Bande de fermeture à profilés avec couche d'étanchéité pelable
EP0905048A1 (fr) * 1997-09-26 1999-03-31 Cryovac, Inc. Feuille composite formant un opercule de refermeture pour récipients
WO2000037335A1 (fr) * 1998-12-21 2000-06-29 Convenience Food Systems B.V. Emballage plastique refermable dote d'au moins une nope
EP1395639B2 (fr) † 2001-02-09 2013-04-10 Bostik Sa Adhesifs thermofusibles auto-adhesifs extrudables a chaud et leur utilisation dans les films multicouches
US7622176B2 (en) 2001-02-09 2009-11-24 Bostik Sa Hot-extrudable pressure-sensitive hot-melt adhesives and their use in multilayer films
WO2002068283A1 (fr) 2001-02-26 2002-09-06 Nordenia Deutschland Gronau Gmbh Sachet en film plastique refermable et bande de fermeture destinee a refermer le sachet
WO2003013976A1 (fr) * 2001-08-06 2003-02-20 Henkel Kommanditgesellschaft Auf Aktien Emballage refermable
CN102083619A (zh) * 2008-03-31 2011-06-01 巴斯夫欧洲公司 可熔化的丙烯酸酯聚合物用于生产压敏粘合剂层的用途
WO2009121834A1 (fr) * 2008-03-31 2009-10-08 Basf Se Utilisation de polymères d'acrylate fusibles pour la fabrication de couches d'adhésif
CN102083619B (zh) * 2008-03-31 2013-11-06 巴斯夫欧洲公司 可熔化的丙烯酸酯聚合物用于生产压敏粘合剂层的用途
US9212291B2 (en) 2008-03-31 2015-12-15 Basf Se Use of meltable acrylate polymers for producing contact adhesive layers
WO2010111135A3 (fr) * 2009-03-27 2011-02-17 Sonoco Development, Inc. Emballage à fermeture libérable et procédé de réalisation
EP2540492A1 (fr) * 2011-06-30 2013-01-02 Amcor Flexibles Transpac N.V. Film pelable
WO2013000719A1 (fr) * 2011-06-30 2013-01-03 Amcor Flexibles Transpac Nv Pellicule décollable
WO2013015867A1 (fr) 2011-07-27 2013-01-31 E. I. Du Pont De Nemours And Company Films multicouches pour emballage refermable
US8617677B2 (en) 2011-07-27 2013-12-31 E I Du Pont De Nemours And Company Multilayer films for reclosable packaging
RU202835U1 (ru) * 2020-08-13 2021-03-10 Общество с ограниченной ответственностью "ПАКГРАД" Лоток для пищевых продуктов

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EP0160975A3 (en) 1987-04-15
DE3576805D1 (de) 1990-05-03
DE3416755A1 (de) 1985-11-07
US4673601A (en) 1987-06-16

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