Flip top plastic lid

A closure for a container wherein the container has an open end and a closed end with a crimp at an uppermost edge of the open end, the closure being configured to engage the open end of the container, wherein the closure comprises:

• a collar configured to engage the container;
• a lid connected to the collar by at least one hinge;
• wherein to facilitate engagement the collar is configured to extend over and surround the open end of the container such that an inner surface impinges on, or is immediately adjacent to, an outer surface of the open end of the container,
• wherein a plurality of beads extend outwardly from the inner surface of the collar to fixedly hold the collar in engagement with the container,
• wherein the plurality of beads are located substantially uniformly relative to each other and occupy between 10% and 50% of the inner surface of the collar,
• wherein the plurality of beads are located in the same plane or an adjacent horizontal plane,
• wherein the beads are provided in one of two shapes to define primary beads and secondary beads,
• wherein the beads in the same plane are of the same shape,
• wherein primary beads and secondary beads have a general shape defined by a lowermost part that is shallow and extends away from the inner surface of the collar in at least one of a curved, sloped, linearly or substantially linearly or a combination thereof before arriving at a lip, and wherein each of said lips are in the same or substantially the same radial plane and said lips extend from the inner surface substantially perpendicular, and
• wherein the lips of the primary beads and secondary beads are in the same radial plane to collectively engage the crimp.