초록 ▼

A container is assembled from several panels generally comprised of one or more layers of relatively rigid stiffening material (such as corrugated cardboard) sandwiched between two layers of a strong, flexible material, such as woven polypropylene. These panels form four side wall assemblies and, in

A container is assembled from several panels generally comprised of one or more layers of relatively rigid stiffening material (such as corrugated cardboard) sandwiched between two layers of a strong, flexible material, such as woven polypropylene. These panels form four side wall assemblies and, in combination with a flexible bottom panel, form a self-supporting, generally cubic material receiving box. An integral closure assembly, including cover flap, front flap and side flaps, advantageously enable the container to conveniently and safely secure relatively large volumes of dense debris without spillage even when the fully laden container is dropped during handling. The container, when empty, may be collapsed for convenient storage.

대표청구항 ▼

1. A collapsible container adapted to receive bulk material therein, the collapsible container comprising:a plurality of wall portions, each of said plurality of wall portions including a plurality of layers of flexible sheet material and a semi-rigid stiffener superposed therebetween; a bottom port

1. A collapsible container adapted to receive bulk material therein, the collapsible container comprising:a plurality of wall portions, each of said plurality of wall portions including a plurality of layers of flexible sheet material and a semi-rigid stiffener superposed therebetween; a bottom portion including at least one layer of flexible sheet material disposed integrally with said plurality of wall portions, wherein said bottom portion and said plurality of wall portions define a material receiving cavity; a flexible closure assembly disposed integrally with said plurality of wall portions, said flexible closure assembly adapted to selectively open and close the material receiving cavity, the flexible closure assembly comprising: a flexible cover extending integrally from one of said wall portions; a pair of side flaps extending from opposite wall portions, said pair of flaps being sized and shaped to extend towards one another for tensioned mutual engagement to substantially close the material receiving cavity; a front flap extending from a wall portion disposed opposite said flexible cover and adapted for superimposed engagement with said pair of side flaps; cover securing means disposed integrally on one or more of said plurality of wall portions; said flexible cover being sized and shaped for being secured in tension by said cover securing means in superposed orientation with said mutually engaged pair of side flaps and said front flap to secure the bulk material within said collapsible container wherein said collapsible container is a unitary device adapted for being alternately collapsed for storage and erected to a self-supporting configuration for receipt and containment of the bulk material.