Re-sealable packages with independently peelable lidding member portions

Patent metadata

Field	Value
Publication number	US-9975680-B2
Application number	US-201715717508-A
Country	US
Kind code	B2
Filing date	Sep 27, 2017
Priority date	Feb 23, 2016
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

Improved packages and methods for constructing packages are provided that are designed such that the user can peel back a lidding member of the package to reveal an independently peelable portion covering one of the compartments. The independently peelable portion is a layer of the lidding member that maintains the respective compartment in an unopened (sealed) condition until the user independently peels that layer off to access the items in that compartment. The lidding member can be used to re-seal all of the compartments before and/or after the independently peelable portion is removed. The independently peelable portion may include a visual indication of a sealed condition of the compartment that serves as a tamper evidence feature. In multiple-compartment packages, peeling back the lidding member allows the user to access some of the compartments of the package, while at least one of the compartments remains sealed via the independently peelable portion.

First claim

What is claimed is:

1. A package comprising:
a base member defining a compartment, the base member comprising a sealing surface formed by an inner flange and an outer flange, wherein the sealing surface defines a channel between the inner flange and the outer flange, and wherein the outer flange defines an exterior edge; and
a lidding member configured to cover the compartment, the lidding member comprising a first layer and a second layer laminated to the first layer via an adhesive layer, wherein the adhesive layer comprises at least a pressure sensitive adhesive (PSA) in a perimeter region of the lidding member aligned with the outer flange,
wherein, upon initial peeling of the lidding member away from the base member, an adhered portion of the first layer aligned with the channel is configured to be peeled away with the second layer while an independently peelable portion of the first layer aligned with the compartment is configured to separate from the second layer and remain attached to the inner flange of the sealing surface of the base member to maintain the compartment in a sealed configuration,
wherein the independently peelable portion of the first layer is configured to be peeled away from the inner flange of the sealing surface of the base member independently of the adhered portion of the first layer to provide access to the compartment subsequent to peeling away of the second layer, and
wherein the lidding member is configured to be re-sealable to at least the outer flange of the sealing surface of the base member via the PSA in the perimeter region of the lidding member to re-close the compartment for storing items therein.

2. The package of claim 1 , wherein the independently peelable portion of the first layer is heat sealed to the inner flange of the sealing surface of the base member around a perimeter of the compartment.

3. The package of claim 2 , wherein the independently peelable portion of the first layer is defined by a cut line that extends through the first layer and is disposed proximate an outer edge of the inner flange.

4. The package of claim 3 , wherein the cut line further defines a pull tab of the independently peelable portion of the first layer that is configured to be grippable by a user for peeling away the independently peelable portion from the base member.

5. The package of claim 1 , wherein the adhered portion of the first layer is defined by two cut lines that extend through the first layer and are disposed proximate corresponding edges of the channel defined by the sealing surface of the base member.

6. The package of claim 1 , wherein the adhesive layer comprises an area void of adhesive between the second layer and the independently peelable portion of the first layer.

7. The package of claim 1 , wherein the adhesive layer comprises an area of permanent adhesive between the second layer and the adhered portion of the first layer.

8. The package of claim 1 , wherein the independently peelable portion comprises a visual indication of a sealed state of the compartment, such that, upon removal of the independently peelable portion from the base member, the visual indication of the sealed state of the compartment is removed.

Assignees

• Sonoco Dev Inc

Inventors

• Huffer Scott William

Classifications

• B65B51/10

  Applying or generating heat or pressure or combinations thereof {(welding of plastics per se B29C65/02; closing plastic tube ends in general B29C57/10)} · CPC title

• B65D2203/12

  Audible, olfactory or visual signalling means (B65D51/248, B65D55/028, B65D79/02 and B65D81/24 take precedence) · CPC title

• B65D75/5855 Primary

  Peelable seals · CPC title

• B65D75/327

  and forming several compartments · CPC title

• B65D77/2056 Primary

  the cover being weakened · CPC title