Method of forming pouch with oxygen scavenging elements

Patent metadata

Field	Value
Publication number	US-12043468-B2
Application number	US-202117332410-A
Country	US
Kind code	B2
Filing date	May 27, 2021
Priority date	Dec 21, 2018
Publication date	Jul 23, 2024
Grant date	Jul 23, 2024

Abstract

The method includes infusing oxygen scavenging elements within at least a portion of an interior surface layer of at least one first polymer layer of a pouch material, the pouch material including a gas impermeable layer connected to the at least one first polymer layer, enclosing a consumable item within the pouch material, and joining ends of the pouch material to form a sealed inner cavity, the sealed inner cavity containing the consumable item.

First claim

What is claimed is:

1. A method of forming a pouch, comprising:
infusing oxygen scavenging elements within at least a portion of an interior surface layer of at least one first polymer layer of a pouch material, the pouch material including a gas impermeable layer connected to the at least one first polymer layer, the infusing including dispersing the oxygen scavenging elements within a matrix;
enclosing a consumable item within the pouch material; and
joining ends of the pouch material to form a seam and seal a sealed inner cavity, the sealed inner cavity containing the consumable item, the matrix being at least partially enveloped within the seam with at least a portion of the matrix extending from the seam into the sealed inner cavity.

2. The method of claim 1 , wherein the joining of the ends includes forming the sealed inner cavity so that the interior surface layer forms an inner surface of the sealed inner cavity.

3. The method of claim 1 , wherein the infusing of the oxygen scavenging elements includes:
adhering the matrix to the at least one first polymer layer.

4. The method of claim 3 , wherein the adhering occurs prior to the joining.

5. The method of claim 1 , wherein the joining of the ends includes forming the sealed inner cavity so that the interior surface layer forms an inner surface of the sealed inner cavity, and the matrix and the interior surface layer are both made from a material that allows oxygen migration.

6. The method of claim 5 , further comprising:
forming the interior surface layer and the matrix from at least one same polymer material.

7. The method of claim 1 , wherein the joining includes crimping the ends of the pouch material.

8. The method of claim 7 , wherein the crimping of the ends of the pouch material includes,
applying heat to the joined ends of the pouch material to bring the joined ends to a temperature between about 137° C. and 205° C., and
applying pressure to the joined ends, the pressure being between about 20 psi and 40 psi, the applying of the heat and pressure occurring over a duration of less than 1 minute.

9. The method of claim 1 , further comprising:
adhering the matrix to the interior surface layer.

10. The method of claim 9 , wherein the joining of the ends includes forming the sealed inner cavity so that the interior surface layer forms an inner surface of the sealed inner cavity, and the matrix and the interior surface layer are both made from a material that allows oxygen migration.

11. The method of claim 9 , wherein the infusing occurs prior to the adhering.

12. The method of claim 1 , further comprising:
forming the at least one first polymer layer to include a sealant that is a polymer-based sealant, a resin-based sealant, or a polymer-based sealant and a resin-based sealant.

13. The method of claim 1 , further comprising:
connecting a first surface of a foil layer to the at least one first polymer layer, the interior surface layer forming an inner surface of the sealed inner cavity, the foil layer being the gas impermeable layer.

14. The method of claim 13 , further comprising:
connecting at least one second polymer layer to a second surface of the foil layer.

15. The method of claim 1 , wherein the infusing further includes infusing a light-sensitive activator into the interior surface layer, the matrix, or both the interior surface layer and the matrix, the light-sensitive activator being configured to bind with free-oxygen to activate the oxygen scavenging elements following an exposure to a light source.

16. A method of forming a pouch, comprising:
infusing oxygen scavenging elements within at least a portion of an interior surface layer of at least one first polymer layer of a pouch material, the pouch material including a gas impermeable layer connected to the at least one first polymer layer;
enclosing a consumable item within the pouch material; and
joining ends of the pouch material to form a sealed inner cavity, the sealed inner cavity containing the consumable item,
the infusing of the oxygen scavenging elements including
dispersing the oxygen scavenging elements within a matrix, and
adhering the matrix to the at least one first polymer layer, and

the adhering of the matrix including at least partially melting the matrix, the interior surface layer, or both the matrix and the interior surface layer to at least partially meld the matrix with the interior surface layer.

17. A method of forming a pouch, comprising:
infusing oxygen scavenging elements within at least a portion of an interior surface layer of at least one first polymer layer of a pouch material, the pouch material including a gas impermeable layer connected to the at least one first polymer layer;
enclosing a consumable item within the pouch material; and
joining ends of the pouch material to form a sealed inner cavity, the sealed inner cavity containing the consumable item,
the infusing of the oxygen scavenging elements including
dispersing the oxygen scavenging elements within a matrix, and
adhering the matrix to the at least one first polymer layer,

the adhering being part of the joining, and the joining including forming a seam in the pouch, the matrix being at least partially enveloped within the seam.

18. The method of claim 17 , wherein the joining includes extending at least one first portion of the matrix from the seam into the sealed inner cavity.

19. A method of forming a pouch, comprising:
infusing oxygen scavenging elements within at least a portion of an interior surface layer of at least one first polymer layer of a pouch material, the pouch material including a gas impermeable layer connected to the at least one first polymer layer;
enclosing a consumable item within the pouch material;
joining ends of the pouch material to form a sealed inner cavity, the sealed inner cavity containing the consumable item;
connecting a first surface of a foil layer to the at least one first polymer layer, the interior surface layer forming an inner surface of the sealed inner cavity, the foil layer being the gas impermeable layer;
connecting at least one second polymer layer to a second surface of the foil layer; and
forming the at least one first polymer layer to include an adhesive layer and a polyethylene base sealant, the adhesive layer connecting the polyethylene base sealant to the foil layer, the polyethylene base sealant being the interior surface layer.

20. The method of claim 19 , further comprising:
forming the at least one second polymer layer to include a biaxially-oriented polyethylene terephthalate layer and a polyethylene layer, the polyethylene layer connecting the biaxially-oriented polyethylene terephthalate layer to the foil layer.

Assignees

• Altria Client Services Llc

Inventors

• Fath Scott A
• Mitten Robert T
• Macko Jason A

Classifications

• B32B2307/7265

  Non-permeable · CPC title

• B32B2307/7246

  Water vapor barrier · CPC title

• B32B2307/7244

  Oxygen barrier · CPC title

• B32B27/306

  comprising vinyl acetate or vinyl alcohol (co)polymers · CPC title

• B32B25/18

  comprising butyl or halobutyl rubber · CPC title