Gusseted bag for medicinal or medical purposes formed of a plastic film laminate composed of a plurality of layers
AssigneeHosokawa Yoko Co., Ltd.
InventorsTakeshi Inuzuka, Susumu Niwa, Takayuki Kotani
Life of this patent
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Abstract
A gusseted bag for medicinal or medical purposes comprises a gusseted bag body formed of a plastic film into a hollow shape; and a sealed portion formed at a bottom of the gusseted bag body. The plastic film is a laminate composed of a plurality of layers. The innermost layer of the plurality of layers essentially consists of polyethylene.
Claims7
A gusseted bag for medicinal or medical purposes and to be subjected to a sterilization treatment by irradiation of gamma rays, the bag being adapted to be received in a container having a prescribed shape and comprising:
- a gusseted bag body formed by converting a plastic film into a hollow shape;
- a sealed portion formed at the bottom of said gusseted bag body by heat-sealing the bottom into a K-shaped form about a side plane of said gusseted bag body in a collapsed condition thereof so as to form two flap portions corresponding to corner portions of said gusseted bag body, and removing said two flap portions;
- said plastic film comprising a laminate composed of a plurality of layers including a biaxially oriented nylon film layer;
- the innermost layer of said plurality of layers consisting essentially of polyethylene having a density within a range from 0.910 to 0.919;
- and
- said laminate comprising, successively disposed, said innermost layer, an ethylene vinyl alcohol copolymer film layer, said biaxially-oriented nylon film layer, and a polyester film layer.
A gusseted bag for medicinal or medical purposes and to be subjected to a sterilization treatment by irradiation of gamma rays, the bag being adapted to be received in a container having a prescribed shape and consisting essentially of:
- a gusseted bag body formed by converting a plastic film into a hollow shape;
- a sealed portion formed at the bottom of said gusseted bag body by heat-sealing the bottom into a K-shaped form about a side plane of said gusseted bag body in a collapsed condition thereof so as to form two flap portions corresponding to corner portions of said gusseted bag body, and removing said two flap portions;
- said plastic film comprising a laminate composed of a plurality of layers including a biaxially-oriented nylon film layer;
- the innermost layer of said plurality of layers consisting essentially of polyethylene having a density within a range from 0.910 to 0.919;
- and
- said laminate comprising, successively disposed, said inner-most layer, an ethylene-vinyl alcohol copolymer film layer, said biaxially oriented nylon film layer, and a polyester film layer.
Dependencies are inferred from the claim text.