Container Closure

Abstract

A container closure ( 10 ) including a peripheral ring member ( 20 ) for securing the closure to a container or can body (not shown), and including a molded, polymer ring member ( 14 ) and central end panel ( 12 ) that are removable from the peripheral ring member for opening the end of the container or can body. The polymer ring member is adhesively bonded to a vertical wall portion ( 24 ) of the peripheral ring member and includes an integral lip portion ( 28 ) for covering a raw terminal edge of wall portion 24 . The adhesive is formulated so that the bond fails cohesively during removal of the polymer ring member. The polymer ring member contains an oxygen-scavenging additive for reducing oxygen inside the container and reducing oxygen ingress into the closed container.

1 . A container closure comprising a peripheral ring member for securing said closure to a container, a central end panel, and a molded, polymer ring member securing the end panel to the peripheral ring member, and a pull tab integral with said polymer ring member for removing said polymer ring member and said central end panel from said peripheral ring member.  
   
   
       2 . A container closure as defined in  claim 1  wherein said peripheral ring member includes a vertical wall portion, and said polymer ring member is adhesively bonded to said vertical wall portion.  
   
   
       3 . A container closure as defined in  claim 2  wherein said polymer ring member includes an integral lip portion covering a raw terminal edge of said wall portion.  
   
   
       4 . A container closure as defined in  claim 1  wherein said polymer ring member is formulated to include an oxygen-scavenging additive.