Cold-workable laminate

Details Cold-workable laminate Cold-workable laminate

B - Operations, Transporting

32

B

B32B 15/08 (2006.01) B65D 65/40 (2006.01)

Patent

CA 2529092

The invention relates to a cold-workable laminate for producing containers for packing pharmaceutical and medical products and diagnostic agents. Said laminate comprises an aluminium film which is provided with a biaxially stretched plastic film arranged on a first side, as an outer layer, and a sealing layer arranged on the second side. Said aluminium film is connected to the biaxially stretched plastic film by means of extrusion lamination, or the biaxially stretched plastic film is extrusion-coated by a polyolefin and lacquer-laminated against the aluminium film. The inventive laminate can be cold-worked at least 15 % more than laminates according to prior art and has an increased resistance to delamination.

L'invention concerne un stratifié formé à froid et destiné à la production de contenants pour l'emballage de produits pharmaceutiques et médicaux et de produits diagnostics. Ce stratifié présente un film d'aluminium comprenant, comme couche externe, un film plastique à étirement biaxial disposé sur une première face et une couche de scellement disposée sur la deuxième face. Ce film d'aluminium est relié au film plastique à étirement biaxial par stratification par extrusion, ou le film plastique à étirement biaxial est recouvert par extrusion d'une polyoléfine et collé par vernis au film d'aluminium. Ce stratifié permet un formage à froid supérieur d'au moins 15 % à celle des stratifiés selon l'état de la technique et a une meilleure résistance au délaminage.

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