Autoclavable, pvc-free multilayer film, in particular for...

B - Operations – Transporting – 32 – B

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Details

B32B 27/32 (2006.01) A61J 1/05 (2006.01)

Patent

CA 2393039

The invention relates to an autoclavable PVC-free multilayer film, to be especially used for packing aqueous, liquid, medicinal products. The inventive film comprises at least three layers, namely an outer layer (A), an inner layer (I) and an interposed intermediate layer (M), each of which consists of 60 to 100 % by weight of a thermoplastic elastomer, the weight indications relating to the total weight of the respective layer. The inventive film is characterized in that it does not have a yield point measurable according to DIN EN ISO 527-1 to 527-3 after superheated steam sterilization at 121 °C or more. The invention further relates to a method for producing said film and to its use as packing material for packing water-based parenteral liquids or liquid lipophilic emulsions.

L'invention concerne un film multicouche exempt de PVC et pouvant passer en autoclave, destiné en particulier au conditionnement de produits médicaux liquides aqueux. Ledit film est constitué d'au moins trois couches, une couche extérieure (A), une couche intérieure (I) et une couche médiane (M), chacune étant composée de 60 à 100 % en poids de matériaux de polypropylène et de 40 à 0 % en poids d'un élastomère thermoplastique, les données pondérales se référant respectivement au poids total de chacune des couches. L'invention est caractérisée en ce que le film multicouche ne présente aucune limite d'élasticité mesurable selon DIN EN ISO 527-1 à 3, après une stérilisation à la vapeur surchauffée à 121 DEG C ou plus. L'invention concerne en outre un procédé de fabrication dudit film et son utilisation en tant que conditionnement pour des liquides parentéraux aqueux ou des émulsions lipophiles liquides.

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