A reinforced container wall

This invention relates to a container (1) produced by molding in a mold defining a join plane, said container having a body (2) having an end wall (4) and a neck connecting to the wall end, the container being characterized in that the end wall has at least one recess (11) extending in the parting plane of at least the major part of the gap between the neck of the periphery of the top wall (4).