System and method of forming a metallic closure for a threaded container

A method of forming a metallic closure configured to seal a threaded neck of a metallic bottle, comprising:

• aligning the metallic closure with an outer tool and an inner tool of a channel forming apparatus, the outer tool and the inner tool being configured to apply a force to the metallic closure to form a channel around an outer perimeter edge of a closed end-wall of the metallic closure when it is positioned there between, wherein:
• the outer tool has a body and a cavity formed therein, the cavity including:
• a first portion with a first interior sidewall that has a first interior diameter;
• and
• a second portion with a second interior sidewall that has a second interior diameter that is less than the first interior diameter;
• and
• the inner tool including:
• a body portion that has a first outer diameter that is less than the first interior diameter and greater than the second interior diameter;
• and
• a projection extending from the body portion, the projection including:
• a cylindrical sidewall with a second outer diameter that is less than the first outer diameter such that a first shoulder is formed between the body portion and the cylindrical sidewall;
• and
• an end-wall;
• and
• moving at least one of the inner tool, the outer tool, and the metallic closure to form the channel in an outer perimeter edge of the metallic closure, the channel positioned between a cylindrical body and the closed end-wall of the metallic closure.

An apparatus to form a channel around a perimeter of a closed end-wall of a metallic closure which is configured to seal a threaded neck of a bottle, comprising:

• an outer tool with a body and a cavity formed therein, the outer tool being interconnected to an outer tool retainer, the cavity including:
• a first portion with a first interior diameter;
• and
• a second portion with a second interior diameter that is less than the first interior diameter;
• and
• an inner tool moveably interconnected to an inner tool retainer and including:
• a body portion that has a first outer diameter that is less than the first interior diameter such that the body portion can extend into the first portion of the cavity;
• and
• a projection extending from the body portion, the projection including:
• a cylindrical sidewall with a second outer diameter that is less than the first outer diameter such that a first shoulder is formed between the body portion and the cylindrical sidewall;
• and
• an end-wall;
• wherein the outer tool and the inner tool are configured to apply a force to the metallic closure to form the channel around the perimeter of the closed end-wall of the metallic closure when it is positioned there between.