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US 6,713,137 B1Granted
Medical containers
AssigneeFresenius Kabi AB
InventorsGunnar Andersson, Vittorio Sala
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AssigneeFresenius Kabi AB
InventorsGunnar Andersson, Vittorio Sala
Estimating the term…
The present invention relates to a flexible polyolefin multilayered film for preparation of medical containers by self sealing, comprising at least a first outer layer and a second layer, each of the layers consisting essentially only of one or more polypropylene based polymers selected from the group consisting of polypropylene homopolymers, polypropylene copolymers having randomly distribute ethylene units and mixtures of said homopolymers and said copolymers, wherein said second layer has a melting point in the range between 120° C. and 150°, said first outer layer has a lower flexibility and a higher melting point than said second layer, and said second comprises a polypropylene polyethylene copolymer with a higher amount of ethylene units than said outer layer. The present invention also relates to medical containers made of or comprising the above film.
A flexible polyolefin multilayered film for the preparation of medical containers by self sealing, the film having a thickness of at least 150 μm and consisting of an outer layer, a middle layer, and a sealant layer each of the layers consisting essentially only of one or more polypropylene based polymers selected from the group consisting of polypropylene homopolymers, polypropylene-polyethylene copolymers having randomly distributed ethylene units, and mixtures of said homopolymers and said copolymers, wherein said middle layer comprises a polypropylene-polyethylene copolymer with a higher amount of ethylene units than said outer layer, and wherein said sealant layer has a lower melting point than said outer layer.
Dependencies are inferred from the claim text.