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US 11,059,644 B2Granted
Tabbed seal concepts
AssigneeSelig Sealing Products, Inc.
InventorsStephen P. Cassidy, Steven A. Brucker, Robert William Thorstensen-Woll, John J. Brown
Life of this patent
Estimating the term…
Abstract
Tabbed sealing members with a robust tab structure having additional support under the tab and at a tab pivot or hinge joint.
Claims20
A tabbed sealing member for bonding to a rim surrounding a container opening, the tabbed sealing member comprising:
- a lower member including at least a seal layer for bonding to a container rim;
- an upper member including one or more layers and partially bonded to the lower member and including a free portion thereof not bonded to the lower member
- a hinge joint formed by the partial bond between the upper member and the lower member, the hinge joint permitting the upper member free portion to pivot away from the lower member to form a gripping tab, the gripping tab extending to a periphery of the tabbed sealing member;
- and
- a folded sheet with a first folded portion bonded to the upper member free portion, a second folded portion bonded to a portion of the lower member below the free portion, and a dead fold aligned with the hinge joint, an inner surface of the first folded portion is not bonded to a facing inner surface of the second folded portion,
- wherein the folded sheet includes an inner support polymer layer and an outer polymer layer, the outer polymer layer is a heat activated polymer forming the bond between the first folded portion and the upper member free portion, and the second folded portion and the portion of the lower member below the free portion.
3 more elements
A laminate sheet configured to form a tabbed sealing member, the laminate sheet comprising:
- a lower member including at least a seal layer for bonding to a container rim;
- an upper member including one or more layers and partially bonded to the lower member and including a free portion thereof not bonded to the lower member;
- a hinge joint formed by the partial bond between the upper member and the lower member, the hinge joint permitting the upper member free portion to pivot away from the lower member to form a gripping tab extending to a periphery of the tabbed sealing member when formed as the tabbed sealing member;
- and
- a folded sheet with a first folded portion bonded to the upper member free portion, a second folded portion bonded to a portion of the lower member below the free portion, and a dead fold aligned with the hinge joint, an inner surface of the first folded portion is not bonded to a facing inner surface of the second folded portion,
- wherein the folded sheet includes an inner support polymer layer and an outer polymer layer, the outer polymer layer is a heat activated polymer forming the bond between the first folded portion and the upper member free portion and the second folded portion and the portion of the lower member below the free portion.
3 more elements
A tabbed sealing member for bonding to a rim surrounding a container opening, the tabbed sealing member comprising:
- a lower member including at least a seal layer for bonding to a container rim;
- an upper member including one or more layers and partially bonded to the lower member and including a free portion thereof not bonded to the lower member;
- a hinge joint formed by the partial bond between the upper member and the lower member, the hinge joint permitting the upper member free portion to pivot away from the lower member to form a gripping tab;
- and
- a folded sheet with a first folded portion bonded to the upper member free portion, a second folded portion bonded to a portion of the lower member below the free portion, and a dead fold aligned with the hinge joint, an inner surface of the first folded portion is not bonded to a facing inner surface of the second folded portion,
- wherein the folded sheet includes an inner support polymer layer and an outer polymer layer, the outer polymer layer is a heat activated polymer forming the bond between the first folded portion and the upper member free portion, and the second folded portion and the portion of the lower member below the free portion,
- wherein the upper member is a different layer from the inner support polymer.
4 more elements
Dependencies are inferred from the claim text.