Package configured to preserve or inhibit pathogens on product, and method of making and using at least portions of same

Patent metadata

Field	Value
Publication number	US-12479647-B2
Application number	US-202218047100-A
Country	US
Kind code	B2
Filing date	Oct 17, 2022
Priority date	Apr 22, 2020
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

A package ( 10 ) configured to preserve or prevent contamination through inhibition of pathogens of product therein includes an active member ( 26 ) co-extruded to a carrier ( 24 ). The combined active member and carrier can be attached to an interior surface of a package, optionally a lidding film ( 22 ) enclosing a cavity formed by a tray of the package.

First claim

What is claimed is:

1 . A package configured to preserve a product or inhibit pathogens on the product therein, the package comprising:
an active member coextruded to a carrier, the combined active member and carrier being point bonded to an interior surface of the package, the active member comprising a mineral loaded polymer having a mineral active agent comprising 40% to 70% by weight of the mineral loaded polymer; and wherein the active member and the carrier are coextensive with each other.

2 . The package of claim 1 , wherein the mineral loaded polymer is an entrained polymer film having a base polymer and the mineral active agent.

3 . The package of claim 2 , wherein the entrained polymer film further includes a channeling agent.

4 . The package of claim 2 , wherein the active agent is a chlorine dioxide gas forming agent comprising acidified silica gel, a metal chlorite, and a moisture trigger.

5 . The package of claim 4 , wherein the acidified silica gel has a pH in a range from 1.4 to 3.1 and is 50% to 90% by weight with respect to a total weight of a chlorine dioxide gas releasing agent, the metal chlorite is in a range from 5% to 30% by weight with respect to the total weight of the chlorine dioxide gas releasing agent and the moisture trigger is a hygroscopic compound that is in a range from 2% to 20% by weight with respect to the total weight of the chlorine dioxide gas releasing agent.

6 . The package of claim 5 , wherein the metal chlorite is sodium chlorite and the moisture trigger is calcium chloride.

7 . The package of claim 1 , wherein active member has at least one of absorbing, adsorbing, releasing activity, or releasing capacity.

8 . The package of claim 1 , wherein the carrier is formed of a nonwoven material.

9 . The package of claim 1 , wherein the carrier is formed of a woven material.

10 . The package of claim 1 , wherein the interior surface is part of a film that encloses a cavity formed by the package, and wherein the film is formed of a flexible polymer.

11 . The package of claim 10 , wherein the active member is positioned between the film that encloses the cavity and the carrier.

12 . The package of claim 10 , wherein the carrier is positioned between the film that encloses the cavity and the active member.

13 . The package of claim 1 , wherein the active member is configured to release a gas or other volatile component.

14 . The package of claim 1 , wherein the active member has absorbing or adsorbing capacity.

15 . The package of claim 1 , the package further comprising:
a tray having a base and a sidewall extending upwardly therefrom and terminating in a rim, the rim surrounding an upper opening of the tray; and the film that encloses the cavity being a lidding film attached to the rim to enclose product stored in a cavity of the tray, the lidding film being formed of polyethylene terephthalate (PET) or cast polypropylene (CPP), wherein the active member has adsorbing or absorbing capacity, or is capable of releasing a gas or other volatile component, the carrier being formed of a nonwoven material.

16 . The package of claim 15 , wherein the active member is positioned between the lidding film and the carrier.

17 . The package of claim 15 , wherein the carrier is positioned between the lidding film and the active member.

18 . A method of preserving product in a package or inhibiting pathogens on the product in the package, the method comprising:
coextruding an active member and carrier, the active member being an entrained polymer film having at least one of absorbing, adsorbing or releasing capacity or activity, the entrained polymer film having an active agent in the form of minerals comprising 40% to 70% by weight of the entrained polymer film, wherein the active member and the carrier are coextensive with each other; and point bonding the coextruded active member and carrier to an interior surface of a package.

19 . The method of claim 18 , wherein the coextruded active member and carrier is attached to an interior surface of film of the package.

20 . The method of claim 18 , wherein the carrier is formed from a nonwoven material.

21 . The method of claim 18 , wherein the carrier is formed from a woven material.

22 . The method of claim 18 , wherein the entrained polymer film includes a base polymer and the active agent.

23 . The method of claim 22 , wherein the entrained polymer film further includes a channeling agent.

24 . The method of claim 18 , wherein the film of the package is formed of a flexible polymer.

25 . The method of claim 18 , wherein the active member is positioned between the film of the package and the carrier when the coextruded active member and carrier are attached to the lidding film.

26 . The method of claim 18 , wherein the carrier is positioned between the film of the package and the active member when the coextruded active member and carrier are attached to the film of the package.

27 . The method of claim 18 , wherein the active agent is a chlorine dioxide gas forming agent comprising acidified silica gel, a metal chlorite, and a moisture trigger.

28 . The method of claim 27 , wherein the acidified silica gel has a pH in a range from 1.4 to 3.1 and is 50% to 90% by weight with respect to a total weight of a chlorine dioxide gas releasing agent, the metal chlorite is in a range from 5% to 30% by weight with respect to the total weight of the chlorine dioxide gas releasing agent and the moisture trigger is a hygroscopic compound that is in a range from 2% to 20% by weight with respect to the total weight of the chlorine dioxide gas releasing agent.

29 . The method of claim 28 , wherein the metal chlorite is sodium chlorite and the moisture trigger is calcium chloride.

Assignees

• Csp Technologies Inc

Inventors

• Watson Neal D
• Johnston Michael A
• Pratt Jason
• Hollinger James S

Classifications

• B65D81/266

  for absorbing gases, e.g. oxygen absorbers or desiccants (B65D51/244, B65D51/30 take precedence) · CPC title

• B65D81/264

  for absorbing liquids · CPC title

• C08G63/183

  Terephthalic acids · CPC title

• B65D81/28 Primary

  Applications of food preservatives, fungicides, pesticides or animal repellants · CPC title

• B65D81/267 Primary

  the absorber being in sheet form · CPC title