Closures

Claim 1

A closure blank of the pilferproof type in which the upper part of the closure skirt is adapted to be engaged with the thread on a bottle neck by a thread rolling operation and having a security band at the lower margin of the skirt which is adapted to be engaged under an abutment ring on the bottle neck wherein the improvement comprises providing a continuous peripheral score line at the junction between the security band and the upper part of the skirt and also dividing the security band into a plurality of separate sections by generally vertical lines of weakness whereby, when said blank has been positioned on a bottle neck with its closure skirt engaged with the thread on a bottle neck and with its security band engaged under the abutment ring on said neck, unscrewing said closure from said bottle and the resulting interaction between said abutment ring and the portion of said security ring which has been engaged thereunder will cause said lines of weakness to burst open, the lower portions of said sections to flare noticeably outward, and the continuity between said sections with said upper part of said skirt to be interrupted only at each end of each section by their being torn apart from said skirt along said score line so as to present a tangential connection between the segment and the skirt.