Improved vented vial stopper for processing freeze-dried...

Details Improved vented vial stopper for processing freeze-dried... Improved vented vial stopper for processing freeze-dried...

B - Operations, Transporting

65

D

B65D 39/00 (2006.01) A61J 1/14 (2006.01) B65D 51/24 (2006.01) F26B 5/06 (2006.01)

Patent

CA 2232711

An improved vented vial stopper (12) for use in processing freeze-dried products is provided. The stopper includes a vent passageway (16) that is covered with a waterproof and moisture vapor permeable membrane (14) to allow the venting of moisture during the freeze-drying process. The membrane also extends to cover most or all of the exposed surface of the stopper to protect the stopper from chemical attack during processing.

Cette invention concerne un bouchon (12) de flacon aéré et amélioré utilisé dans le traitement de produits lyophilisés. Ce bouchon comprend un passage (16) de ventilation qui est recouvert d'une membrane imperméable à l'eau mais laissant passer la vapeur et l'humidité (14) afin d'assurer la ventilation de ladite humidité lors du processus de lyophilisation. Cette membrane recouvre en outre la majeure partie ou la totalité de la surface exposée du bouchon, de manière à protéger ce dernier contre les agressions chimiques lors du traitement.

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