Patent ID: 7931163

Claim:
A closure suitable for use with a thin-walled plastics bottle having a body, the closure comprising: a foil; and an injection moulded neck and cap assembly adapted to be fused together with a body after the body has been filled with a fluid, wherein the cap is fitted to the neck in order to provide a leak free resealable closure, and wherein the foil is interposed between the body and the neck and cap assembly when the neck and cap assembly is fitted to the body, and the neck and cap assembly comprises a base, a removable annular flange connected to a pull ring and secured to the foil, the removable annular flange being separated from the base by a frangible region, and a plurality of depending teeth each having a saw tooth profile inclined inwardly to a centre of the base formed in the base in or adjacent to the frangible region such that on removal of the pull ring the foil is torn by the teeth.