Method and aparatus for testing filled and sealed containers

Details Method and aparatus for testing filled and sealed containers Method and aparatus for testing filled and sealed containers

G - Physics

01

M

G01M 3/00 (2006.01)

Patent

CA 2746577

A testing method comprising introducing into a pressure chamber (2) a batch of gable-top, plastics-coated paper-board cartons (10) containing a liquid, closing the chamber (2), supplying air under pressure to the interior of the chamber 2 exteriorly of the cartons (10) to a pressure level sufficient to cause the air to penetrate potential leakage paths between the outside of at least one of the cartons and the interior of the latter carton (s), whereby the air penetrates into the interior of the latter carton(s), and, after a period of time, reducing the pressure level, whereupon the air which has penetrated into the interior of the latter carton(s) causes outward bulging of the side walls of the latter carton (s).

L'invention porte sur un procédé de test comprenant l'introduction à l'intérieur d'une chambre sous pression (2) d'un lot de cartons à pignon revêtus de matières plastiques (10) contenant un liquide, la fermeture de la chambre (2), l'introduction d'air sous pression à l'intérieur de la chambre (2) à l'extérieur des cartons (10) jusqu'à un niveau de pression suffisant pour amener l'air à pénétrer dans des trajets de fuite potentiels entre l'extérieur d'au moins l'un des cartons et l'intérieur du ou des derniers cartons, ce par quoi l'air pénètre à l'intérieur du ou des derniers cartons, et, après une période de temps, la réduction du niveau de pression, lors de laquelle l'air, qui a pénétré à l'intérieur du ou des derniers cartons, provoque le bombement vers l'extérieur des parois latérales du ou des derniers cartons.

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