Importance

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Abstract

A closure applying apparatus (1) suitable for use in capping machines for placing, on a container (B) having a threaded neck portion (26) and an annular collar (30) below said neck portion, a tamper-evident screw-type capsule (A) made of rigid plastic material and having a lower skirt portion (27) which is connected by a plurality of thin frangible bridge portions (28) to an upper internally threaded skirt portion (22) and is provided with an inwardly projecting bead (29) for snap engaging beneath said annular collar (30) as a result of screwing of the capsule (a) on the container (B). The apparatus comprises a rotary, vertically reciprocable capping chuck having a plurality of jaws (4) for gripping the capsule (A), each jaw (4) being provided at its lower end with an inner flange (14) which engages from below the edge of the lower skirt portion (27). The flange (14) of the jaws (4) form an abutment surface for the lower skirt portion (27), which absorbs the forces produced during snap movement of the inwardly projecting head (29) over the collar (30) of the container (B), thus preventing fracture of the bridges (28) during the capping operation.

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First Claim