초록 ▼

An elongated sleeve made of a plurality of substantially rigid panels interconnected with one another in folding relationship. When in the stored condition, the sleeve is folded flat. When in condition to be used for its intended purpose, the sleeve is unfolded to form an open ended sleeve closed on

An elongated sleeve made of a plurality of substantially rigid panels interconnected with one another in folding relationship. When in the stored condition, the sleeve is folded flat. When in condition to be used for its intended purpose, the sleeve is unfolded to form an open ended sleeve closed on the sides. The sleeve is adapted to positively retain and support a collapsible bag at the top while the bag is being filled by filling the interior of the sleeve. Handles are provided in the top edges of the sleeve to facilitate removal of the sleeve from the full bag. The panels are internally laminated with a water repellant adhesive while the inside of the sleeve is coated with a moisture resistant compound.

대표청구항 ▼

A sleeve for supporting and protecting the inside surface of a collapsible bag during the process of filling the bag, said sleeve comprising: four similarly shaped, substantially continuously rigid elongated panels connected together to form an elongated area of connection between each adjacent two

A sleeve for supporting and protecting the inside surface of a collapsible bag during the process of filling the bag, said sleeve comprising: four similarly shaped, substantially continuously rigid elongated panels connected together to form an elongated area of connection between each adjacent two said panels and to form a unitary closed square cross-sectional structure about an axis and having an open top and an open bottom with respective opposite top and bottom edges, said elongated area of connection between each adjacent two said panels being a connection line, said connection lines being formed by scoring lines, one of said connection lines being formed by spaced double scoring lines to form an enhanced width connection line between two adjacent panels; and at least one top narrow slit formed in said top edge of said structure and extending a relatively short distance toward said bottom edge thereof; at least one slit being adapted to receive a portion of the material at the open end of the bag in a secure wedging relationship to thereby positively retain the bag in upright supported condition around said structure; said square structure adapted for being generally the same length from said top edge to said bottom edge as the length of the bag, thereby providing coextensive, full length protection of the inside bag wall from damage when material is forced into it, and positively self supporting the bag in an upright condition; said panels being mutually foldable at each said connection line between each two adjacent panels so that said structure may be folded to a flat condition, one panel in width for storage and shipping, said one enhanced width connection line facilitating the folding of said panels to a flat condition.