초록 ▼

Provided is a moisture retention seal for use with a package. The moisture retention seal includes an opened-ended canister having a plurality of canister sealing surfaces. Snap-fitted with spatial interference to the canister at its opened-end, is a moisture retention closure having a plurality of

Provided is a moisture retention seal for use with a package. The moisture retention seal includes an opened-ended canister having a plurality of canister sealing surfaces. Snap-fitted with spatial interference to the canister at its opened-end, is a moisture retention closure having a plurality of closure sealing surfaces. Each canister sealing surface cooperates with a corresponding one of the closure sealing surfaces to form a plurality of partial seals. At least one of the partial seals includes a micro-bead surface comprising one or more small, inwardly directed, narrowly spaced-apart, micro-bead elements. The package that includes a moisture retention seal of the present invention employs only molded parts and does not require gaskets or secondary seals.

대표청구항 ▼

What is claimed is: 1. A package comprising: a closure having an interior surface and a protrusion extending from the interior surface; and a canister having a flexible top portion, the protrusion contacting the flexible top portion of the canister, the protrusion normally applying a generally down

What is claimed is: 1. A package comprising: a closure having an interior surface and a protrusion extending from the interior surface; and a canister having a flexible top portion, the protrusion contacting the flexible top portion of the canister, the protrusion normally applying a generally downward contact force to at least part of the flexible top portion to form a top seal between the closure and the canister, the protrusion deflecting the part of the flexible top portion generally downwardly from a rest position, wherein the flexible top portion of the canister is in the rest position when not connected with the closure, the protrusion deflecting the flexible top portion by a deflection angle from the rest position, the deflection angle being less than about ninety degrees when connected. 2. The package as defined by claim 1, wherein the flexible top portion has a generally annular shape. 3. The package as defined by claim 1, wherein the protrusion generally circumferentially extends about the top interior surface. 4. The package as defined by claim 1, wherein the closure has a top and a skirt, the skirt having a plurality of microbeads to form a microbead seal between the closure and the canister. 5. The package as defined by claim 1, wherein the closure has a top and a skirt, the skirt being secured to the canister, the skirt having a bead with an inner dimension, the canister having a corresponding undercut surface having an outer dimension, the bead inner dimension being smaller than the undercut surface outer dimension. 6. The package as defined by claim 5, wherein the bead and the undercut surface form a bead seal. 7. The package as defined by claim 1, wherein the closure further comprises an interior sidewall surface radially inward of the protrusion, the sidewall surface contacting the canister to form a sidewall surface seal. 8. The package as defined by claim 1, wherein the flexible top portion of the canister has two opposed sides along its longitudinal dimension, both opposed sides being generally sinusoidally shaped, a terminal portion of the top portion contacting the protrusion. 9. The package as defined by claim 1, wherein said protrusion is generally rigid. 10. The package as defined by claim 1, wherein the closure defines a closure aperture therethrough. 11. The package as defined by claim 10, further comprising a lid for closing the closure aperture. 12. The package as defined by claim 11, further comprising a living hinge coupling the lid to the closure. 13. The package as defined by claim 1, further comprising: a venting system having a closure sealing ring with stand-offs, the stand-offs extending from the sealing ring and being spaced to define at least one gap. 14. The package as defined by claim 1, wherein the canister forms an interior containing moist material. 15. The package as defined by claim 14, wherein the moist material comprise moistened wipes. 16. A method of forming a package for retaining moisture, the method comprising: providing a closure having an interior surface with a downwardly extending protrusion; providing a canister having a flexible top portion; and connecting the closure to the canister so that the protrusion contacts the flexible top portion of the canister and applies a generally downward contact force to at least part of the flexible top portion to form a top seal between the closure and the canister, connecting causing the top protrusion to pivot the part of the flexible top portion generally downwardly less than about ninety degrees from a relaxed position. 17. A method according to claim 16, wherein the closure has a top and a skirt depending from the top, the skirt having a plurality of micro-beads to form a microbead seal between the closure and the canister. 18. A method according to claim 16, wherein the closure has a top and a skirt depending from the top, the skirt having a bead with an inner dimension, the canister having a corresponding sidewall undercut surface having an outer dimension, the bead inner dimension being smaller than the sidewall undercut surface outer dimension, the bead and the sidewall undercut surface forming a bead seal. 19. A method according to claim 16, wherein the closure has a top undercut surface extending circumferentially about the top interior surface, and the canister has a sidewall bead surface circumferentially extending about the canister inwardly of a sidewall upright surface, the top undercut surface cooperating with the sidewall bead surface to form an undercut seal. 20. A method according to claim 16 wherein the package closure defines a closure aperture therethrough. 21. A method according to claim 20, wherein the package closure further includes an aperture lid for closing off the closure aperture, the aperture lid being coupled to the package closure by a living hinge. 22. A method according to claim 16, wherein the closure further comprises a venting system including a closure sealing ring having stand-offs, the stand-offs extending from the sealing ring, the stand-offs being spaced to define a gap. 23. A method according to claim 16, further comprising: adding moistened wipes within an interior of the canister. 24. A package comprising: a closure having a top interior surface and first means for sealing, the first means extending from the top interior surface; and a canister having flexible means for sealing, the first sealing means contacting the flexible sealing means, the first sealing means normally applying a generally downward contact force to at least part of the flexible sealing means to form a top seal between the closure and the canister, the first sealing means generally downwardly pivoting at least the part of the flexible sealing means less than about ninety degrees from a relaxed position. 25. A package according to claim 24, wherein the closure has a top and a depending skirt, the skirt being secured to the canister, the skirt having microbead sealing means to form a microbead seal between the closure and the canister. 26. A package according to claim 24, wherein the closure comprises a skirt that is generally radially outward of the first sealing means, the closure further comprising an interior sidewall radially inward of the first sealing means, the interior sidewall contacting the flexible sealing means to form an interior seal. 27. A package according to claim 24, further comprising a venting system including ring sealing means having stand-offs extending from the ring sealing means, the stand-offs being spaced apart to define at least one gap.