Packaging and sealing tool for production thereof

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 81/34 (2006.01) B65B 51/14 (2006.01) B65D 77/22 (2006.01)

Patent

CA 2470054

Packaging (1) for a packed heatable material, in particular microwavable, comprising at least one sealing region (5), which opens on exceeding a given internal pressure. The or each such sealing region comprises at least one pre- determined flow section (7, 9) with a restriction (9) for the packaging contents and a point (7), facing the interior of the packaging. A channel-like triangular or stellate perforation or stamping serves as restriction.

L'invention concerne un emballage (1) d'un produit pouvant être chauffé à l'état conditionné, en particulier sous micro-ondes, comprenant au moins une zone de scellement (5) qui devient localement perméable lorsqu'on dépasse une pression interne prédéterminée. La zone de scellement ou une zone de ce genre présente au moins une section de perméabilité théorique (7, 9) comprenant un étranglement (9) pour le contenu de l'emballage, et une pointe (7) dirigée vers le volume intérieur de l'emballage. L'étranglement est formé par une ouverture ou une découpe en forme de canal de section triangulaire ou en étoile.

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