Method for the manufacture of a laser-precut pack

B - Operations – Transporting – 65 – B

Patent

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Details

B65B 61/02 (2006.01) B29C 59/00 (2006.01) B65D 75/58 (2006.01)

Patent

CA 2276403

The invention relates to a method for the manufacture of a pack particularly intended for undergoing preservation treatment, from at least one film (10) comprising two plastic layers, an upper (11) and a lower (12), which form the outer and inner faces of said pack, and a light-metal central layer (13) sandwiched between said upper and lower layers. According to the invention, prior to the operations to make said pack, a laser beam is applied solely to the lower layer of said film, said lower layer forming the inner face of said pack, in order to produce, virtually in the entire thickness of said lower layer, at least one perforation (14) forming at least one precut line.

L'invention concerne un procédé de fabrication d'un emballage, notamment destiné à subir un traitement pour la conservation, à partir d'au moins un film (10) constitué de deux couches de plastique supérieure (11) et inférieure (12), qui forment les faces internes et externes dudit emballage, et une couche centrale en métal léger (13) placée en sandwich entre lesdites couches supérieure et inférieure. Dans le procédé de l'invention, avant les opérations de fabrication dudit emballage, un rayon laser est appliqué uniquement sur la couche inférieure dudit film, ladite couche inférieure formant la face interne dudit emballage, de sorte qu'au moins une perforation (14) formant au moins une ligne de prédécoupage soit formée, sur sensiblement toute l'épaisseur de ladite couche inférieure.

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