CRACK-RESISTANT CONTAINER LID HAVING OPENING

摘要

A container lid that is adapted to be placed on a container includes an upstanding side wall and a top wall. The top wall is provided with an openin g or through hole for allowing the contents within the container to be mixed whil e the lid remains on the container. The top wall of the container lid is configure d to strengthen and increase the rigidity of the portion of the top wall surrounding the opening. The container lid can also be provided with characteristics allowin g the portion of the lid surrounding the opening to flex when a force is applied t o the periphery of the opening.