Closure and package with induction seal and RFID tag
A package includes a container having a neck finish, and a closure having a plastic shell with a skirt externally secured to the container neck finish. A seal disk includes a metal layer on a plastic substrate. The periphery of the plastic substrate is sealingly secured to the neck finish of the container. The metal layer of the seal disk includes a circumferentially continuous outer periphery overlying the outer periphery of the plastic layer and an interrupted inner portion within said outer periphery. An RFID assembly includes and an RFID tag electrically connected to an antenna. The RFID assembly is captured between the seal disk and the plastic shell, and the interruptions in the inner portion of the metal layer of the seal disk reduce or eliminate interference in communication between the RFID assembly and external interrogation circuitry. A liner disk may be disposed between the seal disk and the RFID assembly. The closure skirt may have an internal bead to engage a periphery of the liner disk and lift the liner disk off of the neck finish during removal of the closure from the container neck finish.
1. A package that includes a container having a neck finish, and a closure that includes:
a plastic shell having a skirt externally secured to said neck finish,
a seal disk that includes an electrically conductive layer on a plastic substrate,
a periphery of said plastic substrate being sealingly secured to said neck finish, said electrically conductive layer including a circumferentially continuous outer periphery overlying an outer periphery of said plastic substrate and an interrupted inner portion within said outer periphery, and
an RFID assembly that includes an antenna and an REID tag electrically connected to said antenna, said RFID assembly being captured between said seal disk and said plastic shell.
2. The package set forth in claim 1 including a liner disk between said RFID assembly and said seal disk.
3. The package set forth in claim 2 wherein said liner disk is separate from said seal disk.
4. The package set forth in claim 3 including an internal bead on said skirt to engage a periphery of said liner disk and lift said liner disk off of said seal disk during removal of said closure from said neck finish.
5. The package set forth in claim 2 wherein said RFID assembly is bonded to said liner disk.
6. The package set forth in claim 5 including an internal bead on said skirt to engage an outer periphery of said liner disk and lift said liner disk off of said seal disk during removal of said closure from said neck finish.
7. The package set forth in claim 1 wherein said interrupted inner portion of said metal layer includes an inner periphery and radial spokes connecting said inner periphery to said outer periphery.
8. A closure that includes:
a plastic shell having a skirt for securement to a container neck finish,
a seal disk within said closure, said seal disk including at least an electrically conductive layer and a plastic layer,
said electrically conductive layer including a circumferentially continuous outer periphery overlying an outer periphery of said plastic layer and an interrupted inner portion within said outer periphery, and
an RFID assembly that includes an antenna and an RFID tag electrically connected to said antenna, said RFID assembly being disposed between said seal disk and said plastic shell.
9. The closure set forth in claim 8 wherein said interrupted inner portion of said electrically conductive layer includes an inner periphery and radial spokes connecting said inner periphery to said outer periphery.
10. The closure set forth in claim 8 wherein said plastic layer comprises a plastic disk substrate on which said electrically conductive layer is disposed.
11. The closure set forth in claim 10 including a liner disk disposed between said seal disk and said RFID assembly.
12. The closure set forth in claim 11 wherein said seal disk is secured to said liner disk by an adhesion layer that is adapted to evaporate upon application of electrical energy to said outer periphery of said metal layer.
13. The closure set forth in claim 12 including an internal bead on said skirt to engage an outer periphery of said liner disk and hold said liner disk within said shell.
14. A closure that includes:
a plastic shell having a skirt for securement to a container neck finish,
a seal disk within said plastic shell, said seal disk including a plastic disk substrate and an electrically conductive layer disposed on said substrate,
said electrically conductive layer including a circumferentially continuous outer periphery overlying an outer periphery of said plastic disk substrate and an interrupted inner portion within said outer periphery,
an RFID assembly including a substrate, an antenna on said substrate and an RFID tag electrically connected to said antenna, and
a liner disk disposed between said seal disk and said RFID assembly, said liner disk being secured at least to said continuous outer periphery of said electrically conductive layer of said seal disk by an adhesion layer that is adapted to evaporate upon application of electrical energy to said outer periphery of said metal layer.
15. The closure set forth in claim 14 including an internal bead on said skirt to engage an outer periphery of said liner disk and hold said liner disk within said shell.
16. The closure set forth in claim 15 wherein said interrupted inner portion of said electrically conductive layer includes an inner periphery and radial spokes connecting said inner periphery to said outer periphery.
17. The closure set forth in claim 15 wherein said RFID assembly is bonded to said liner disk.