Abstract: An opening arrangement for packing containers made from laminated layers of plastics and paper wherein a weakening line is arranged in the wall structure of the container and defines an openable part that extends over an edge line forming the junction between a top and side wall. The weakening line is sealed off from the inside of the container by a cover layer impervious to liquid and which is joined to the inside of the container wall around the weakening line, and a strip of flexible material is located between the container wall and cover layer in such manner that it extends over the edge line to thereby provide a good pouring edge.