Lid for closing a cup

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 77/20 (2006.01) B32B 3/24 (2006.01) B32B 7/06 (2006.01) B32B 15/08 (2006.01) B32B 15/20 (2006.01) B32B 27/08 (2006.01) B32B 27/28 (2006.01) B32B 27/32 (2006.01)

Patent

CA 2729044

The invention relates to a lid (2) for closing a cup (1) along a peripheral sealing edge (10). Said lid comprises at least one aluminum film and an optionally multi- layered plastic layer which is co-extruded onto the aluminum film and has a closed predetermined tearing line (3). The invention is characterized in that the plastic layer is made of plastic based on polyethylene (PE) or plastic based on polypropylene (PP) and that the predetermined tearing line is introduced into the plastic layer preferably by means of a CO2 laser. In one embodiment, said predetermined tearing line (3) is provided directly in the region of the sealing edge (10). The invention also relates to a method for producing such a lid.

La présente invention concerne un opercule (2) destiné à refermer un récipient (1) le long d'un bord de fermeture (10) périphérique, l'opercule présentant au moins un film d'aluminium et une couche de matière plastique éventuellement multicouche, coextrudée sur le film d'aluminium, la couche de matière plastique présentant une ligne de fragilité (3) refermée sur elle-même. L'invention se caractérise en ce que la couche de matière plastique se compose soit de matière plastique à base de polyéthylène (PE), soit de matière plastique à base de polypropylène (PP), et en ce que la ligne de fragilité est réalisée dans la couche de matière plastique de préférence au moyen d'un laser CO2. Dans un mode de réalisation, la ligne de fragilité (3) se trouve directement dans la zone du bord de fermeture (10). L'invention concerne également un procédé de réalisation d'un tel opercule.

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