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

B - Operations – Transporting – 32 – B

Patent

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Details

B32B 7/06 (2006.01) A61J 1/10 (2006.01) B29C 65/18 (2006.01) B29C 65/76 (2006.01) B32B 27/08 (2006.01) B65D 30/08 (2006.01) C08L 23/06 (2006.01) C08L 23/10 (2006.01) C08L 53/00 (2006.01)

Patent

CA 2163022

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 outer 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 concerne une feuille polymère à plusieurs couches et un sachet à chambres multiples (1) dont les chambres (8, 9) sont formées par des cordons de soudure (2, 3) dans leur zone marginale extérieure et par au moins un cordon de soudure (7) dans la zone de séparation des chambres. Les cordons de soudure sont constitués de matériaux polymères situés en face des chambres, soudés ensemble de manière inséparable dans la zone marginale extérieure et soudés ensemble dans la zone de séparation des chambres de sorte que le cordon de soudure puisse se défaire par application d'une force comprise entre 5 et 20 N. La solidité variable de l'assemblage par soudage est assurée par des températures variables de soudage.

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