Foam packaging tray and packaging method using same

Details Foam packaging tray and packaging method using same Foam packaging tray and packaging method using same

B - Operations, Transporting

65

D

B65D 79/00 (2006.01) B65D 77/20 (2006.01) B65D 81/20 (2006.01)

Patent

CA 2368842

A foam sheet comprising a cellular structure having two or more interconnected cells (30) in fluid communication with one another, the foam sheet being in the form of a tray (12). One or more perforations (32) are provided in the exterior surface of the tray, and extend into the cellular structure of the foam sheet to fluidly communicate with the interconnected cells. This arrangement is sufficient to permit gas to escape from the cellular structure in order to substantially prevent damage to the tray upon exposure thereof to a reduction in ambient pressure. A method of making the trays and a packaging method employing such trays is also disclosed.

L'invention concerne une feuille de polystyrène comprenant une structure cellulaire présentant au moins deux cellules interconnectées en communication fluidique mutuelle, la feuille de polystyrène se présentant sous la forme d'une barquette. Une ou plusieurs perforations sont pratiquées dans la surface extérieure de la barquette et s'étendent jusque dans la structure cellulaire de la feuille de polystyrène pour communiquer de façon fluide avec les cellules interconnectées. Cet agencement est suffisant pour permettre au gaz de s'échapper de la structure cellulaire afin d'empêcher sensiblement la détérioration de la barquette lors de son exposition à une réduction de la pression ambiante. L'invention concerne également un procédé de production des barquettes et un procédé d'emballage utilisant lesdites barquettes.

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