CLOSURE WITH SAFETY FEATURE

摘要

Disclosed is a closure for a container wherein the container may experience an excessive buildup of internal pressure. The closure is equipped with a “blowout” portion which partially separates from the remaining closure portion if internal pressure exceeds a predetermined limit. The separation occurs at a line of weakness. The line of weakness is specially designed to withstand external, incidental pressure resulting from normal handling yet fracture in a controlled fashion should internal pressure exceed a predetermined amount. In this way inconvenience and possible hazard is avoided from a closure completely separating from the container from excessive pressure.