Induction-sealed composite container end closure

A closure for a container having a sidewall defining an interior and an end opening, said closure comprising:

• a central panel positionable in registration with said opening, said central panel having a perimeter substantially conforming to said sidewall;
• at least one secondary panel attached directly to said central panel at said perimeter and extending angularly therefrom and forming a surface around said closure substantially conforming to and facing said sidewall, a first portion of said surface being removably attachable to said sidewall and a second portion of said surface being fixedly attachable to said sidewall, said first surface portion defining a movable part of said closure separable from engagement with said sidewall and movable with respect to said container, said second surface portion defining a fixed part of said closure fixable to said sidewall;
• a metal foil layer adhered to said surface of said secondary panel, said metal foil layer having a side facing said sidewall;
• a heat-activated adhesive layer positioned on said side of said metal foil layer and engageable with said sidewall, said metal foil layer being heatable by electromagnetic induction to melt said heat-activated adhesive layer thereon and form an adhesive bond between said secondary panel and said sidewall when said secondary panel and said sidewall are in interfacing relationship, said adhesive bond between said first surface portion and said sidewall being a relatively weaker bond than said adhesive bond between said second surface portion and said sidewall;
• and
• a hinge positioned on said central panel between said fixed and said movable parts of said closure, said movable part being pivotable on said hinge relatively to said fixed part into a position away from said opening when said closure is positioned in registration with said opening.