Multilayer polymer film for a multichamber medical bag and...

A - Human Necessities – 61 – J

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A61J 1/10 (2006.01) B65D 30/08 (2006.01) C08J 5/12 (2006.01)

Patent

CA 2678759

The invention concerns a multilayer polymer film and a multichamber bag, whose bag chambers are formed by seams in the outer border zone and by at least one seam in the chamber separation zone, whereby the seams are formed from the polymer materials facing the chambers. The polymer materials facing the chambers are inseparably sealed together in the out border zone and sealed together in the chamber separation zone such that the seam is separable with a force which lies in the range from 5 to 20 N. The different strength of the bond from the sealing process is obtained by varying sealing temperatures.

L'invention a trait à une pellicule polymérique multicouches et à un sac multicompartiments, les compartiments du sac étant formés par des joints dans la zone de la bordure externe et par au moins un joint dans la zone de la séparation du compartiment, les joints étant formés par les matières polymériques revêtant les compartiments. Les matières polymériques revêtant les compartiments sont scellées de manière irréversible dans la zone de la bordure externe et sont scellées dans la zone de la séparation du compartiment de telle sorte que le joint puisse être défait par l'application d'une force de 5 à 20 N. La différence de force du joint formé lors du processus de scellement est obtenue grâce à l'application de températures de scellement différentes.

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