TAMPER-EVIDENT CLOSURE FOR WIDE MOUTH CONTAINER

摘要

A tamper-evident closure for a wide mouth container. The closure member has a central panel and a downwardly opening rim cavity encircling the central panel and adapted to receive therein a top rim of the food container. The rim cavity is defined by a pair of upstanding, radially spaced skirt segments connected at their respective upper edges by a top rim segment. A radially outer one of the skirt segments has adjacent a lower edge thereof a radially inwardly projecting and circumferentially extending first flange adapted to snugly fit under and frictionally engage the lip on the food container. In addition, the radially outer skirt also has a radially outwardly projecting second flange contiguous with and oriented below the first flange. A plurality of generally inverted V-shaped radially outwardly projecting rim segments are integrally connected between each set of mutually adjacent circumferential ends of at least the second flange. The inverted V-shaped rim segments each have a pair of wall segments each projecting radially outwardly from a respective one of the mutually adjacent circumferential ends of at least the second flange. The pair of walls extend inclined upwardly from the second flange toward each other to and integral connection forming an apex. Each of the plural apexes defines stress concentration structure for the material of the closure member so that a lifting force applied to one of the second flanges will cause the material of the closure member to break only at the apexes.