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US 10,556,732 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.
Claims18
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 is non-symmetrical with one of the first folded portion or the second folded portion extending to a periphery of the tabbed sealing member and the other of the first folded portion or the second folded portion has a distal end spaced from the periphery of the tabbed sealing member.
3 more elements
A laminate sheet configured to form a tabbed sealing member having a periphery, 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 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 is non-symmetrical with one of the first folded portion or the second folded portion extending to a periphery of the tabbed sealing member and the other of the first folded portion or the second folded portion has a distal end spaced from the periphery of the tabbed sealing member.
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;
- a folded sheet having a thickness and including 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;
- and
- a partial layer between the upper member and lower member forming the partial bond therebetween, the partial layer having a thickness, wherein the thickness of the partial layer is consistent to the thickness of the folded sheet when folded.
3 more elements
Dependencies are inferred from the claim text.