MEDICINAL MULTILAYER FILM AND MEDICINAL CONTAINER Russian patent published in 1998 - IPC

Abstract RU 2105571 C1

FIELD: medicine. SUBSTANCE: medicinal multilayer film consists of internal layer, intermediate layer and external layer containing polyolefins mainly. Internal layer is formed by resinous mixture ethylene-alpha-olefin copolymer at density 0.93-0.945 g/cm3 and polypropylene. Internal layer has at least one layer of resinous mixture ethylene-alpha-olefin copolymer at density 0.92-0.945 g/cm3 and ethylene-alpha-olefin elastomer at density 0.88-0.89 g/cm3 at mixing ratio (1:5)-(2:1) by mass. Thickness of resinous layer mixture is at least 85% of total intermediate layer thickness. External layer is formed by ethylene-alpha-olefin copolymer at density 0.93-0.945 g/cm3. Film of this structure has excellent thermal stability, clearness, flexibility, impact strength and hermetic property that can be easily disturbed. Film is used for making medicinal containers with multiple compartments. EFFECT: improved quality of film. 7 cl, 2 tbl, 4 dwg

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RU 2 105 571 C1

Authors

Fudzio Inoue[Jp]

Masamitsu Izumi[Jp]

Sigetosi Kasijama[Jp]

Dates

1998-02-27Published

1994-10-04Filed