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1. (WO1991008898) PROCESS FOR MANUFACTURING MEMBRANE LIDS FOR SEALING CONTAINERS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008898 International Application No.: PCT/EP1990/002254
Publication Date: 27.06.1991 International Filing Date: 19.12.1990
Chapter 2 Demand Filed: 23.01.1991
IPC:
B32B 15/08 (2006.01) ,B65D 77/20 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15
Layered products essentially comprising metal
04
comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
08
of synthetic resin
B PERFORMING OPERATIONS; TRANSPORTING
65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
D
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
77
Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
10
Container closures formed after filling
20
by applying separate lids or covers
Applicants:
ALCAN INTERNATIONAL LIMITED [CA/CA]; 1188 Sherbrooke Street West Montreal, Quebec H3A 3G1, CA (AllExceptUS)
HARTZHEIM, Gerda, Maria [DE/DE]; DE (UsOnly)
Inventors:
HARTZHEIM, Gerda, Maria; DE
Agent:
EITLE, Werner ; Hoffmann, Eitle & Partner Arabellastrasse 4 D-8000 München 81, DE
Priority Data:
89123474.219.12.1989EP
Title (EN) PROCESS FOR MANUFACTURING MEMBRANE LIDS FOR SEALING CONTAINERS
(FR) PROCEDE DE FABRICATION DE COUVERCLES EN FORME DE MEMBRANES POUR LA FERMETURE ETANCHE DE RECIPIENTS
Abstract:
(EN) The invention relates to a process for manufacturing membrane lids (1) consisting of a multi-layered material having at least one metallic layer for sealing containers, the lids having at least one tear-open flap (2) projecting out over the periphery of the container. Here, an improved process is achieved in that firstly, cut-outs (11) are made in a metallic foil (9), in the regions of the cut-outs of which the tear-open flaps (2) of the membrane lids (1) to be subsequently cut out of the multi-layered material come to be located, that a non-metallic layer consisting of a hot-sealable material and/or on the outer side of which a layer of hot-sealable material (10) is applied is then laminated onto the metallic foil (9), and that finally, the membrane lids (1) having tear-open flaps (2) are cut out of the multi-layered material formed in this way in such a manner that the tear-open flaps are formed out of the areas (16) of the multi-layered material which are free of metallic foil.
(FR) L'invention se rapporte à un procédé de fabrication de couvercles en forme de membranes (1), qui sont constitués par un matériau multicouche composé d'au moins une couche métallique pour la fermeture étanche de récipients et qui comportent au moins une languette de déchirage (2) faisant saillie hors de la périphérie du récipient. La présente invention améliore un tel procédé de fabrication en pratiquant d'abord dans une feuille métallique (9) des découpures (11), dans les régions desquelles viennent ensuite se situer les languettes de déchirage (2) des couvercles à membranes (1) devant être ultérieurement découpées dans le matériau multicouche, en plaçant ensuite en strate sur la feuille métallique (9) une couche non métallique qui est composée d'un matériau thermoscellant et/ou sur la face externe de laquelle est appliquée une couche d'un matériau thermoscellant (10), puis en découpant les couvercles en forme de membranes (1) avec les languettes de déchirage (2) dans le matériau multicouche ainsi formé, de façon à ce que les languettes de déchirage soient formées dans les régions (16) du matériau multicouche qui ne comportent plus de feuille métallique.
Designated States: AU, BR, CA, JP, US
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1991070691