US 5,960,993 AGranted

Container for fluidal materials readily collapsible to flattened shape after use

AssigneeRiso Kagaku Corporation

InventorsNoriaki Mitsui, Toru Takemura, Takahiro Wakayama

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Abstract

A container for fluidal materials, including a bag member made of a flexible film material originally constructed in a flattened shape with some foldings, a port member mounted to the bag member at its longitudinal end, and a plate member mounted over the bag member as originally constructed in a flattened annular sheet member made of a relatively stiff and elastic sheet material such as a cardboard, wherein the plate member is expanded into a tubular shape when the bag member is charged with a fluidal material but is readily flattened for disposal after the fluidal material has been discharged from the bag member.

Claims9

Dependent claims

A container for fluidal materials, comprising:

a bag member made of a flexible film material, said bag member defining an inner space therein sealed against an outer atmosphere except a port opening formed therein, said bag member including a first and a second substantially rectangular portion adapted to show a same plane configuration when the container is in a flattened state, said first and second portions of said bag member being connected with one another along opposite side edges thereof so as to show a tubular configuration with opposite end edges thereof defining a pair of annular edges of the tubular configuration of said bag member when said inner space is charged with a fluidal material, said bag member further including a third portion closing one end of said tubular configuration along one of said pair of annular edges thereof except said port opening formed therein and a fourth portion closing another end of said tubular configuration along another of said pair of annular edges thereof, said third and fourth potions each being foldable to be substantially coplanar with said first and second portions when the container is in the flattened state,
a port member mounted to said bag member at said third portion thereof, said port member defining a nozzle for discharging the fluidal material charged in the inner space of said bag member therefrom through said port opening of said bag member, and
a plate member mounted over said bag member, said plate member including a first and a second substantially rectangular portion adapted to show a substantially same plane configuration when the container is in the flattened state, said first and second portions of said plate member being adapted to show a tubular configuration when said inner space is charged with the fluidal material, said plate member being fixed with said bag member such that a longitudinally half portion of said first and second portions of said bag member adjacent to said third portion thereof is maintained in a longitudinally extended state, while allowing a remaining longitudinally half portion of said first and second portions of said bag member to shift into said longitudinally half portion thereof adjacent to said third portion by turning over inside out.

Dependencies are inferred from the claim text.

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Abstract

A container for fluidal materials, comprising:

a bag member made of a flexible film material, said bag member defining an inner space therein sealed against an outer atmosphere except a port opening formed therein, said bag member including a first and a second substantially rectangular portion adapted to show a same plane configuration when the container is in a flattened state, said first and second portions of said bag member being connected with one another along opposite side edges thereof so as to show a tubular configuration with opposite end edges thereof defining a pair of annular edges of the tubular configuration of said bag member when said inner space is charged with a fluidal material, said bag member further including a third portion closing one end of said tubular configuration along one of said pair of annular edges thereof except said port opening formed therein and a fourth portion closing another end of said tubular configuration along another of said pair of annular edges thereof, said third and fourth potions each being foldable to be substantially coplanar with said first and second portions when the container is in the flattened state,
a port member mounted to said bag member at said third portion thereof, said port member defining a nozzle for discharging the fluidal material charged in the inner space of said bag member therefrom through said port opening of said bag member, and
a plate member mounted over said bag member, said plate member including a first and a second substantially rectangular portion adapted to show a substantially same plane configuration when the container is in the flattened state, said first and second portions of said plate member being adapted to show a tubular configuration when said inner space is charged with the fluidal material, said plate member being fixed with said bag member such that a longitudinally half portion of said first and second portions of said bag member adjacent to said third portion thereof is maintained in a longitudinally extended state, while allowing a remaining longitudinally half portion of said first and second portions of said bag member to shift into said longitudinally half portion thereof adjacent to said third portion by turning over inside out.