Re-sealable packages with independently peelable lidding member portions

Patent metadata

Field	Value
Publication number	US-9802744-B2
Application number	US-201615050677-A
Country	US
Kind code	B2
Filing date	Feb 23, 2016
Priority date	Feb 23, 2016
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

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 first compartment and a second compartment, the base member comprising a sealing surface at least partially around each of the first and second compartments; and
a lidding member configured to cover the first and second compartments, 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,
wherein, upon initial peeling of the lidding member away from the base member, an adhered portion of the first layer aligned with the first compartment is configured to be peeled away with the second layer to provide access to the first compartment while an independently peelable portion of the first layer aligned with the second compartment is configured to separate from the second layer and remain attached to the sealing surface of the base member around the second compartment to maintain the second compartment in a sealed configuration,
wherein the independently peelable portion of the first layer is configured to be peeled away from the base member independently of the adhered portion of the first layer to provide access to the second compartment subsequent to peeling away of the second layer, and
wherein the lidding member is configured to be re-sealable to the base member via the PSA in the perimeter region of the lidding member to re-close both the first and the second compartments for storing items therein.

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

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 a cut line that extends through the first layer.

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 second compartment, such that, upon removal of the independently peelable portion from the base member, the visual indication of the sealed state of the second compartment is removed.

9. A method of manufacturing a package, the method comprising:
forming a base member having a compartment, the base member comprising a sealing surface;
forming a lidding member configured to cover the compartment by laminating a first layer to a second 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;
creating a cut line through the first layer such that the cut line defines an adhered portion of the first layer configured to be peeled away with the second layer and an independently peelable portion of the first layer configured to separate from the second layer and remain attached to the sealing surface of the base member to maintain the compartment in a sealed configuration;
heat sealing the lidding member to the base member at a location corresponding to the perimeter region, such that the lidding member covers the compartment and maintains the item within the base member,
wherein the independently peelable portion of the first layer is configured to be peeled away from 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 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.

10. The method of claim 9 , wherein forming the base member comprises forming a base member further having first and second compartments, wherein the lidding member is configured to cover the first and second compartments, wherein the adhered portion of the first layer is aligned with the first compartment and is configured to be peeled away with the second layer to provide access to the first compartment while the independently peelable portion of the first layer is aligned with the second compartment and is configured to separate from the second layer and remain attached to the sealing surface of the base member around the second compartment to maintain the second compartment in a sealed configuration.

11. The method of claim 9 , wherein forming the base member comprises defining an inner flange and an outer flange of the sealing surface by defining a channel in the sealing surface between the inner and outer flanges, wherein the adhered portion of the first layer is aligned with the channel and is configured to be peeled away with the second layer while the independently peelable portion of the first layer is aligned with the compartment and 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, the method further comprising heat sealing the independently peelable portion of the first layer to the inner flange of the sealing surface of the base member around a perimeter of the compartment.

12. The method of claim 11 further comprising applying a visual indication of a sealed state of the compartment on the independently peelable portion, 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

• B65D75/327

  and forming several compartments · CPC title

• B65D2575/586

  with means for reclosing · CPC title

• 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

• B65D65/40

  Applications of laminates for particular packaging purposes {(B65D1/0215, B65D1/28, B65D3/22, B65D5/0281, B65D5/563, B65D9/30, B65D29/02, B65D31/02, B65D75/26, B65D77/2024, B65D81/1275, B65D81/3811, B65D81/3823, B65D81/3834, B65D81/3846, B65D81/3858, B65D81/3874, B65D81/3886, B65D81/3897 take precedence; laminates per se or laminated packages characterised by the composition or)} · CPC title

• B65D65/14

  with areas coated with adhesive · CPC title