Inner seal with a sub tab layer
AssigneeSelig Sealing Products, Inc.
InventorRobert William Thorstensen-Woll
Life of this patent
Estimating the term…
Abstract
A pull-tab sealing member for a container containing an upper laminate forming a pull-tab bonded to a lower laminate capable of being heat sealed to a container's mouth or opening. The upper laminate defines the pull tab wholly within a perimeter or circumference of the seal. The sealing member further includes a sub tab layer or member under the gripping tab for concentric structural support.
Claims20
A tabbed sealing member with a foam layer for sealing to a rim surrounding a container opening, the sealing member comprising:
- a multi-layer laminate including an upper laminate portion with one or more layers and partially bonded to a lower laminate portion forming a gripping tab defined wholly within a perimeter of the sealing member, the gripping tab for removing the sealing member from a container opening;
- the lower laminate portion below the gripping tab including at least a heat seal layer for bonding to the container rim, a metal layer for heating the heat seal layer, and a polymer foam layer above the metal layer;
- a non-foam polymer sub-tab layer positioned between the lower laminate and the gripping tab;
- and
- the non-foam polymer sub-tab layer coextensive with at least the gripping tab at a periphery thereof.
A container and cap assembly including a tabbed sealing member with foam for sealing to a rim surrounding an opening of the container, the assembly comprising:
- a container with a rim surrounding an opening thereof;
- a cap for closing the opening of the container;
- a multi-layer laminate including an upper laminate portion with one or more layers and partially bonded to a lower laminate portion forming a gripping tab defined wholly within a perimeter of the sealing member, the multi-layer laminate bonded to the container rim;
- the lower laminate portion below the gripping tab including at least a seal layer for bonding to the container rim, a metal layer for heating the seal layer, and a polymer foam layer above the metal layer;
- a non-foam polymer sub-tab layer between the lower laminate and the gripping tab;
- and
- the non-foam polymer sub-tab layer coextensive with at least the gripping tab at its periphery thereof.
A laminate for forming a tabbed sealing member for sealing to a rim surrounding a container opening, the laminate comprising:
- a multi-layer laminate including an upper laminate portion with one or more layers and partially bonded to a lower laminate portion forming a gripping tab when the laminate is formed into the tabbed sealing member;
- the lower laminate portion including at least a heat seal layer for bonding to the container rim after the laminate is formed into the tabbed sealing member, a metal layer for heating the heat seal layer, and a polymer foam layer above the metal layer;
- a non-foam polymer sub-tab layer positioned between at least a portion of the lower laminate and the upper laminate.
Dependencies are inferred from the claim text.