CLOSURE HAVING A VALVE WITH AN ARCUATE FRANGIBLE LINE

摘要

A container is provided with a cap (1e, 1f) having a roof portion and a cylindrical skirt (5e) A well (60e, 60F) extends from the roof portion into the cap, the well having an inner wall structure (134) that terminates at an edge and frangible valve (110, 132) joined to the well by a frangible section (114, 138) that extends about a first portion vicinal to a periphery of the frangible valve and by a non-frangible section (116, 140) that extends about a second portion vicinal to said periphery