Double seal food container

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 45/04 (2006.01) B65D 21/02 (2006.01) B65D 43/02 (2006.01) B65D 51/16 (2006.01)

Patent

CA 2127311

ABSTRACT A food container which is a combination of a base portion and a lid portion made from a resilient polymeric material is disclosed. The base is a unitary component including an upwardly projecting, peripherally extending sealing rim having inner and outer sealing areas. The lid is also a unitary component including a peripherally extending sealing channel correspondingly shaped to receive the sealing rim of the base and particularly, to engage the rim at the inner and outer sealing areas. Because both the base and lid are made from resilient material, the inner and outer sealing areas are shaped to provide a self- reinforcing seal configuration wherein the initial engagement of either the inner or the outer seals urges the other seal into engagement. This feature also permits a wide tolerance to processing variations in the size of the lid and the base. The base portion of the food container of the present invention is also designed to include audible indicators as the lid becomes fully sealed with the base. Further, the container is suitable for microwave cooking.

Cette invention concerne un récipient alimentaire formé d'une barquette et d'un couvercle en polymère souple. La barquette est un élément monobloc à rebord d'étanchéité périphérique faisant saillie vers le haut et présentant deux faces, une intérieure et une extérieure, de contact étanche. Le couvercle, également monobloc, comporte un caniveau périphérique dont la section correspond à la forme du rebord de la barquette de manière à pouvoir en épouser étroitement les surfaces de contact. Les deux éléments, barquette et couvercle, étant en polymère souple, leurs surfaces intérieure et extérieure de contact sont profilées pour établir automatiquement un contact étanche dès après l'introduction du rebord de la barquette dans le caniveau du couvercle. Cette caractéristique permet d'adopter des tolérances dimensionnelles généreuses dans la fabrication aussi bien de la barquette que du couvercle. La barquette est également conçue pour émettre un signal audible de fermeture complètement étanche du récipient. Par ailleurs, le récipient peut être utilisé dans les fours à micro-ondes.

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