Moisture retention seal

• US 20110220671A1
• Filed: 02/22/2011
• Published: 09/15/2011
• Est. Priority Date: 08/25/2005
• Status: Active Grant

• Current Assignee: Perimeter Brand Packaging, LLC
• Original Assignee: Union Street Brand Packaging
• Inventors: Speck, Kristin S., Arevalo, Jose M., Evans, Christopher T., Gieda, Christopher
• Granted Patent: US 8,297,461 B2
• Time in Patent Office: Days
• US Class Current: 220/780
• CPC Class Codes: B65D 2543/0099 Integral supplemental sealing lips
• CPC Class Codes: B65D 47/0842 consisting of a strap of flexible material
• CPC Class Codes: B65D 51/1627 the closure being for a box-like container

Abstract

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.

Claims

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,

wherein the closure has a top undercut surface extending circumferentially about the top interior surface, and the canister has a sidewall surface circumferentially extending about the canister, the top undercut surface cooperating with the sidewall surface to form an undercut seal.

2. The package as defined by claim 1 wherein the top undercut surface is radially inward of the protrusion.

3. The package as defined by claim 1 wherein the protrusion is generally annular.