Coextruded multilayer films for sterilizable fluid containers

Details Coextruded multilayer films for sterilizable fluid containers Coextruded multilayer films for sterilizable fluid containers

B - Operations, Transporting

32

B

B32B 27/32 (2006.01) A61J 1/00 (2006.01) A61J 1/10 (2006.01) B32B 7/02 (2006.01) B32B 27/08 (2006.01)

Patent

CA 2252585

The films, foils, sheets and the like, flexible and transparent, fully formed of polyolefins, suitable in particular for the manufacture of infusional solution containers with the aid of forming, filling and sealing processes, comprise two terminal layers (A) and (C) of different polymeric composition, and "n" intermediate substrates B1, B2, ...Bi...Bn having gradients of ethylenic content and of softening temperature (fig. 1).

L'invention concerne des films, feuilles, couches et similaires, flexibles et transparents, entièrement constitués de polyoléfine, s'utilisant en particulier pour la production de contenants de solutions de perfusion au moyen de procédés de formage, remplissage et scellage. Ces films, feuilles, couches et similaires, comprennent deux couches d'extrémité (A) et (C) de compositions polymères différentes, et "n" substrats intermédiaires B1, B2, ...Bi...Bn présentant des gradients de teneur en éthylène et de température de ramollissement (fig. 1).

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