EP0928746A1 - Feuille composite pour une membrane de fermeture - Google Patents

Feuille composite pour une membrane de fermeture Download PDF

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Publication number
EP0928746A1
EP0928746A1 EP97811027A EP97811027A EP0928746A1 EP 0928746 A1 EP0928746 A1 EP 0928746A1 EP 97811027 A EP97811027 A EP 97811027A EP 97811027 A EP97811027 A EP 97811027A EP 0928746 A1 EP0928746 A1 EP 0928746A1
Authority
EP
European Patent Office
Prior art keywords
film
membrane
cover layer
container
screw cap
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Withdrawn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
EP97811027A
Other languages
German (de)
English (en)
Inventor
Joachim Roncoroni
Klaus Sommerer
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
Alusuisse Lonza Services Ltd
Alusuisse 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
Application filed by Alusuisse Lonza Services Ltd, Alusuisse Technology and Management Ltd filed Critical Alusuisse Lonza Services Ltd
Priority to EP97811027A priority Critical patent/EP0928746A1/fr
Publication of EP0928746A1 publication Critical patent/EP0928746A1/fr
Withdrawn legal-status Critical Current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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0015—Upper closure of the 41-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0093—Membrane
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/20—Sealing means
    • B65D2251/205—Inserted

Definitions

  • the invention relates to a composite film with a membrane film for a membrane closure on a container with screw cap, which membrane film for lamination against a cover layer remaining in the screw cap when the container is opened is.
  • the use of one against one is also within the scope of the invention Cover layer laminated composite film and a container with membrane closure and Screw cap.
  • the containers are containers made of glass or plastic with one glued onto the edge of the container or sealed sealing membrane known.
  • This sealing membrane usually exists from a possibly printed aluminum foil in combination with one for gluing layer of for example glassine provided against the edge of the container.
  • the Aluminum foil serves as a diffusion barrier and in particular prevents the entry of Air and water vapor inside the container to protect the packaged goods, e.g. freeze-dried coffee, cocoa powder and the like perishable filling goods.
  • the containers are with a screw cap with an insert made of e.g. cardboard or polyethylene foam fitted.
  • the membrane film is laminated against the insert, the lamination being carried out in this way is that a proportionate between the membrane film and the insert low liability.
  • the interface Membrane film / insert serves as a predetermined breaking point. This material separation creates a good audible crackling noise. Because this characteristic cracking only when first If the screw cap comes loose, this locking system can prevent unauthorized opening of the container can be easily determined.
  • the membrane film is usually produced and, if necessary, printed in one Foil plant, whereas the lamination of the membrane foil against the insert at the packer the filling goods are carried out.
  • the packer must be able to do this be to produce the lamination with low bond adhesion reproducibly, which the Investment in a technically complex and correspondingly expensive extrusion laminating system required.
  • the invention is therefore based on the object of a closure system with a membrane film to create, which enables the packer of filling goods by the film manufacturer delivered membrane film without great technical effort including inclusion laminate a defined predetermined breaking point against a cover layer or insert.
  • a composite film of the type mentioned at the beginning leads to the achievement of the object according to the invention Type in which the membrane film against one for lamination against the cover layer provided intermediate film is laminated from plastic and the lamination so is chosen that the adhesion between the membrane film and the intermediate film less is considered the adhesion between the intermediate film and the top layer, so when turning of the screw cap to open the container, a separation between the membrane film and the intermediate film takes place and the intermediate film adheres to the cover layer remains in the screw cap.
  • the essential advantage of the composite film according to the invention over conventional ones Membrane foils lie in the fact that the later predetermined breaking point at the equipped one Film manufacturer is installed and the packer only has to make sure that he the lamination of the delivered composite film against the top layer or Lid insert with the formation of a strong bond, what with technical simple means is possible.
  • the composite film according to the invention with a built-in The predetermined breaking point can thus also be used for packaging goods do not have one for performing extrusion lamination with low bond strength suitable facility.
  • a non-pretreated plastic film is used as an intermediate film preferably a non-pretreated plastic film is used.
  • This can, for example be a non-polar plastic film, preferably consisting of a polyolefin.
  • polyolefins for polyolefin films are polyethylenes, for example high-density polyethylene (HDPE, density greater than 0.944 g / cm 3 ), medium-density polyethylene (MDPE, density 0.926-0.940 g / cm 3 ), linear medium-density polyethylene (LMDPE, density 0.926 -0.940 g / cm 3 ), low density polyethylene (LDPE, density 0.910-0.925 g / cm 3 ) and linear low density polyethylene (LLDPE, density 0.916-0.925 g / cm 3 ), polypropylenes such as axially or biaxially oriented polypropylene or cast polypropylene, amorphous, crystalline or highly crystalline polypropylene or mixtures thereof, atactic or isotactic polyropylene or mixtures thereof, poly-1-butene, poly-3-methylbutene, poly-4-methylpentene and copolymers thereof, such as, for example, of polyethylene with Vinyl a
  • the membrane film can be laminated against the intermediate film using a laminating adhesive respectively.
  • the laminating adhesive can be solvent-based or solvent-free and also be hydrated. Examples are solvent-based, solvent-free or aqueous acrylate or polyurethane glue, with laminating glue based on polyurethane are preferably used.
  • the laminating adhesive can be used, for example, in amounts of 1 to 10 g / m 2 , preferably in amounts of 2 to 8 g / m 2 and in particular in amounts of 3 to 6 g / m 2 .
  • the intermediate film preferably has a thickness of 8 to 100 ⁇ m, preferably 12 to 25 ⁇ m and in particular about 15 ⁇ m.
  • the membrane film is expediently a composite film made of aluminum and a container-side base layer, which for closing the container on the Container edge is glued or sealed.
  • a particularly suitable membrane film is, for example, an aluminum / glassine composite film.
  • the composite film according to the invention laminated against a cover layer is suitable in special measure as a closure system for containers with membrane closure and Screw cap.
  • a container designed according to the invention with a membrane closure and screw cap, with one for lamination against one when opening the container in Screw cover remaining cover layer provided membrane film is distinguished according to the invention daduch that the membrane film against one for lamination against the intermediate film provided in plastic is laminated and the lamination is chosen so that the adhesion between the membrane film and the intermediate film is less than the adhesion between the intermediate film and the cover layer, so that when turning the screw cap to open the container, a separation between the Membrane film and the intermediate film and the intermediate film on the top layer remains in the screw cap.
  • a container made of glass for example, shown in FIG screw cap 12 made of plastic.
  • a membrane film 16 glued or sealed.
  • the Membrane film 16 is, for example, a composite film made of an optionally printed aluminum film and a glassine layer facing the inside of the container.
  • an insert or cover layer 18 made of cardboard, for example or polyethylene foam fixed.
  • Membrane film 16 and cover layer 18 are over a Laminated with low bond strength.
  • FIG. 2 shows the arrangement of FIG. 1 after a first rotation of the screw cap 12.
  • the cover layer 18 has separated from the membrane film 16 solved what a characteristic when turning the screw cap 12 for the first time Crack triggers.
  • the previously intact membrane film 16 removed or pierced in the usual way.
  • the prior art closure system shown in FIG. 3 is the membrane film 16 directly connected to the cover layer or insert 18 via a lamination adhesive 20.
  • the lamination that is carried out by the packer must be carried out in such a way that a relatively small between the membrane film 16 and the cover layer 18 Composite adhesion arises, which leads to a predetermined breaking point S between membrane film 16 and Cover layer 18 leads, so that when turning the screw cap 12, the cover layer 18 in Screw cap remains and the membrane film 16 closes the container 10 intact.
  • the reproducible setting of a low bond between the Membrane film 16 and the cover layer 18 require a technically complex extrusion laminating system.
  • the membrane film is 16 over a 15 ⁇ m thick intermediate film 26 made of polyethylene with the Cover layer 18 connected.
  • the connection between the membrane film 16 and the intermediate film 26 and between the intermediate film 26 and the cover layer 18 takes place in each case by lamination, for example by means of lamination adhesive 22, 24.
  • the composite film V according to the invention is composed of the membrane film 16 and this with a laminating adhesive 22, for example based on polyurethane laminated intermediate film 26.
  • This composite film V is manufactured by the film manufacturer, of the special facilities for setting the required low group liability between the membrane film 16 and the intermediate film 26 to form a defined Predetermined breaking point S.
  • the packaged goods are delivered with the packer Composite film V against the cover layer 18 by means of simple technical devices concealed.
  • the only thing that has to be taken into account here is that the joint liability between the intermediate film 26 and the cover layer 18 is larger than that of the film manufacturer Defined set adhesion between the membrane film 16 and the intermediate film 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP97811027A 1997-12-29 1997-12-29 Feuille composite pour une membrane de fermeture Withdrawn EP0928746A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97811027A EP0928746A1 (fr) 1997-12-29 1997-12-29 Feuille composite pour une membrane de fermeture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97811027A EP0928746A1 (fr) 1997-12-29 1997-12-29 Feuille composite pour une membrane de fermeture

Publications (1)

Publication Number Publication Date
EP0928746A1 true EP0928746A1 (fr) 1999-07-14

Family

ID=8230552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97811027A Withdrawn EP0928746A1 (fr) 1997-12-29 1997-12-29 Feuille composite pour une membrane de fermeture

Country Status (1)

Country Link
EP (1) EP0928746A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588099A (en) * 1985-04-25 1986-05-13 Minnesota Mining And Manufacturing Company Film seal for container
US4818577A (en) * 1987-08-20 1989-04-04 Minnesota Mining And Manufacturing Company Synthetic liner capable of resisting chemical attack and high temperature
EP0488985A1 (fr) * 1990-11-30 1992-06-03 Lynes Holding S.A. Opercule multicouche
EP0562649A1 (fr) * 1992-03-25 1993-09-29 Agfa-Gevaert N.V. Capsule de bouchage avec fermeture scellée par induction
EP0628493A1 (fr) * 1993-06-08 1994-12-14 Toppan Printing Co., Ltd. Matériau pour étanchéification interne

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4588099A (en) * 1985-04-25 1986-05-13 Minnesota Mining And Manufacturing Company Film seal for container
US4818577A (en) * 1987-08-20 1989-04-04 Minnesota Mining And Manufacturing Company Synthetic liner capable of resisting chemical attack and high temperature
EP0488985A1 (fr) * 1990-11-30 1992-06-03 Lynes Holding S.A. Opercule multicouche
EP0562649A1 (fr) * 1992-03-25 1993-09-29 Agfa-Gevaert N.V. Capsule de bouchage avec fermeture scellée par induction
EP0628493A1 (fr) * 1993-06-08 1994-12-14 Toppan Printing Co., Ltd. Matériau pour étanchéification interne

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