Patent ID: 7090091
Filing Date: 2006-08-15
Classification: B65D

Abstract:
1. Large-volume container for holding liquid media, composed of two shell-like end parts each having a ring-shaped flat contact surface, and at least one sleeve-like middle part composed of two ring segments and provided with two ring-shaped flat contact surfaces and an opening for filling and emptying, wherein the two end parts as well as the ring segments of the middle part are manufactured by blow molding with an inner layer and an outer layer, are provided with external stiffening ribs formed as chambers, and are connected in the areas of their contact surfaces by an inner and outer weld, wherein the two end parts ( 4 ) as well as the ring segments ( 2 a , 2 b , 2 c ) have in the areas of their contact surfaces ( 12 ) a circumferential chamber ( 7 ), wherein the contact surfaces ( 12 ) have at their circumferential boundary edges backwardly extending inclinations ( 13 ) for forming welding grooves ( 14 ) between the end parts ( 4 ) and the ring segments ( 2 a , 2 b , 2 c ).