CONTAINER END CLOSURE WITH OPTIONAL SECONDARY VENT OPENING

摘要

The present invention relates to an opening device for a beverage container. More specifically, the invention relates to a metal end closure having a primary opening area and at least one optional secondary vent opening which can be opened with the same pull tab. The primary opening area and the secondary vent opening area are defined by a score line which is interrupted by a check slot to inhibit propagation of a fracture along the score line.