Self-locking closure system

Details Self-locking closure system Self-locking closure system

B - Operations, Transporting

65

D

B65D 3/20 (2006.01)

Patent

CA 2145112

A closure for a container such as a paper cup. The container has an extended upper border having a series of crease lines extending downwardly from an upper edge, which when folded inwardly form a series of rectangles, each having a diagonal corner portion to form a closure panel. The panels may be displaced inwardly of the border in a mutually overlapping relation to close the container. By selecting a fold-over angle greater than neutral, the panels will converge in a mutual reactive relation to converge and lock in an inclined closure cone. The crease lines incorporate an adjoining reinforcing band to fold over within the upper border to form a reinforced band therearound. The containers are stackable when in an unfolded or partially unfolded condition.

Fermeture pour contenant tel un gobelet en papier. Le contenant présente une bordure supérieure pouvant être déployée vers le haut et comportant une série de plis orientés vers le bas à partir de son bord supérieur et qui, lorsque repliés vers l'intérieur forment une série de rectangles, chacun comportant une portion triangulaire contribuant à former un panneau de fermeture. Les panneaux individuels peuvent être déportés vers l'intérieur de la bordure, leur chevauchement mutuel assurant la fermeture du contenant. L'angle de pliage étant supérieur à un angle neutre, la convergence des panneaux forme un cône de fermeture par le verrouillage mutuel de ses éléments inclinés. La bordure comporte une bande de renforcement dont le rabattement sur les plis renforce la fermeture. Les contenants sont emboîtables lorsque leur fermeture est dépliée ou partiellement dépliée.

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