Patent ID: 8490805
Filing Date: 2013-07-23
Classification: B26D,B26F,B65D,Y10T

Abstract:
1. A stopper for a container neck, wherein the stopper includes: a tubular skirt suitable for surrounding the neck and provided with a peripheral line of weakness that is cut and made up firstly of through notches that are cut and succeed one another around the periphery of the skirt, and secondly, between said notches, of breakable bridges that are adapted to being broken when the stopper is opened for the first time and that, before the stopper is opened for the first time, interconnect a non-removable portion of the skirt, which portion is provided with retainer means for retaining the non-removable portion permanently around the neck, and a removable portion of the skirt, which portion is provided with fastener means for fastening the removable portion removably to the neck; and wherein the line of weakness is a single continuous helix having a first end and a second end, the line of weakness extending between the first end and the second end, and turning through more than 360° so that the second end is disposed above the first end, and the first and second ends define a non-breakable strip between them.