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Claim 1

A CONTAINER COMPRISING A BODY BLANK HAVING BODY PANELS FOLDED ALONG LONGITUDINAL BEND LINES AND JOINED ALONG A LONGITUDINAL SEAM TO FORM A HOLLOW POLYGONAL BODY AND HAVING AT LEAST ONE END CLOSED BY AN END BLANK INCLUDING AN END PANEL AND A PLURALITY OF END FLANGES BENT AT RIGHT ANGLES TO THE END PANEL AND FITTED INTO THE HOLLOW BODY WITH THE FLANGES FACING OUTWARDLY THEREOF, EACH END OF THE CONTAINER WHICH IS CLOSED BY ONE OF SAID END BLANKS HAVING END FLAPS INTEGRAL WITH THE BODY BLANK AND JOINING THE BODY PANELS AT TRANSVERSE CREASE LINES PARALLEL WITH THE OUTER EDGES OF SAID END FLANGES, THE END FLAPS BEING INTEGRALLY JOINED TOGETHER AT EXTENSIONS OF THE LONGITUDINAL BEND LINES AND HAVING DIAGONAL CREASE LINES NEAR EACH LONGITUDINAL BEND LINE EXTENSION BUT MUTUALLY SPACED ON OPPOSITE SIDES THEREOF TO DEFINE A TAB IN EACH CORNER ATTACHED TO THE BODY PANELS AND TO THE END FLAPS ALONG THE ADJACENT CREASE LINES, EACH TAB AND THE ADJOINING END FLAPS BEING FOLDED INWARDLY TO OVERLIE THE FLANGES OF THE END BLANK MEETING IN THE ASSOCIATED CORNER AND BEING SEALED THERETO TO FORM A CONTINUOUS PERIPHERAL CLOSURE AROUND THE END OF THE CONTAINER.