Patent ID: 6190756
Filing Date: 2001-02-20
Classification: B65D,Y10S,Y10T

Abstract:
A corrugated sheet packaging material formed of a single paper or corrugated fiberboard sheet folded into an array of alternating first and second hollow structures extending parallel to the folds in a longitudinal direction, said sheet packaging material having first and second opposing surfaces;wherein each of said first and second hollow structures has at least first, second and third side walls joined at corners to define a closed polygon in cross-section perpendicular to the longitudinal direction;wherein each of said first hollow structures has its first and second side walls meeting at one of said corners and at least in part shared in common with adjacent second hollow structures, said third side walls of said first hollow structures being connected together to form said first opposing surface and said one corner being located at said second opposing surface;wherein each of said second hollow structures has its first and second side walls meeting at a second of said corners and at least in part shared in common with adjacent first hollow structures, said third side walls of said second hollow structure being connected together to form said second opposing surface and said second corners being located at said first opposing surface; andwherein at least a portion of said third sides of said second hollow structures are convex circular arcs forming protuberances at said second opposing surface.