Multilayer film and container
AssigneeOtsuka Pharmaceutical Factory, Inc.
InventorsTakayuki Denpou, Tamotsu Kataoka, Keiichi Hattori
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Abstract
The present invention provides a multilayer film comprising five layers, wherein each layer is constituted by a resin having the following density in that order. 1st layer an ethylene α-olefin copolymer having a density of 0.930 to 0.950 g/cm3, 2nd layer: an ethylene-α-olefin copolymer having a density of 0.890 to 0.920 g/cm3, 3rd layer a polypropylene having a density of 0.900 to 0.930 g/cm3, 4th layer: an ethylene-α-olefin copolymer having a density of 0.890 to 0.920 g/cm3, and 5th layer an ethylene-α-olefin copolymer having a density of 0.915 to 0.950 g/cm3, and a container using the same. This container is useful for containing liquid medicine, blood or the like in the medical field.
Claims10
A multilayer film comprising five layers, wherein each layer is constituted by a resin having the following density in that order:
- 1st layer:
- an ethylene-α-olefin copolymer having a density of 0.930 to 0.950 g/cm3,
- 2nd layer:
- an ethylene-α-olefin copolymer having a density of 0.890 to 0.920 g/cm3,
- 3rd layer:
- a polypropylene having a density of 0.900 to 0.930 g/cm3,
- 4th layer:
- an ethylene-α-olefin copolymer having a density of 0.890 to 0.920 g/cm3, and
- 5th layer:
- an ethylene-α-olefin copolymer having a density of 0.915 to 0.950 g/cm3.
Dependencies are inferred from the claim text.