Container end closure liner and methods of preparing the same

Patent metadata

Field	Value
Publication number	US-11377258-B2
Application number	US-201916723049-A
Country	US
Kind code	B2
Filing date	Dec 20, 2019
Priority date	Jan 2, 2019
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

An improved metal or glass container is described. The metal or glass container includes a body portion and an end closure. The end closure includes a laminated polymer film attached to the product facing side of the end closure. When the container is sealed, the laminated polymer film attached to the product facing side of the end closure forms a liner.

First claim

What is claimed is:

1. A container, comprising:
a body comprising a sealable opening, a product facing body side, and a consumer facing body side; and
an end closure comprising a product facing closure side and a consumer facing closure side,
wherein the sealable opening is configured to receive the end closure,
wherein the product facing closure side comprises a laminated film,
wherein the consumer facing closure side is:
1) an aluminum end stock, or
2) an aluminum end stock coated with a conversion layer comprising titanium,
zirconium, compounds of trivalent chromium (Cr(III)) and phosphates, and combinations thereof, and
wherein the laminated film on the product facing closure side contacts the product facing body side providing an end closure liner; and
wherein the container is a metal container comprising aluminum, an aluminum alloy, magnesium, a magnesium-based material, titanium, a titanium-based material,
copper, a copper-based material, steel, a steel-based material, bronze, a bronze-based material, brass, a brass-based material, or any combination thereof.

2. The container of claim 1 , wherein the container is a beverage can, a bottle, a food storage can, an aerosol can, or a chemical storage can.

3. The container of claim 1 , wherein the body is a spray on liner, a laminated liner, a chemical vapor deposited liner, a physical vapor deposited liner, an applicator applied liner, or any combination thereof.

4. The container of claim 1 , wherein the end closure is an easy open closure, a peel off closure, a beverage closure, a penny lever closure, a sanitary closure, an aerosol valve cap closure, a ring pull closure, a resealable closure, a bottle rolled-on pilfer proof closure, or any combination thereof.

5. The container of claim 1 , wherein the end closure is configured to engage the sealable opening.

6. The container of claim 1 , wherein the laminated film comprises a natural polymer, a synthetic polymer, or any combination thereof.

7. The container of claim 1 , wherein the end closure liner is up to 500 microns thick.

8. The container of claim 7 , wherein the end closure liner is from 6 microns thick to 40 microns thick.

9. The container of claim 7 , wherein the end closure liner is from 8 microns thick to 15 microns thick.

10. The container of claim 1 , wherein the end closure liner is resistant to materials having a pH of from 1 to 14.

11. The container of claim 1 , wherein the container provides a product shelf life of up to four years.

12. A method for preparing a container having an end closure liner, comprising:
providing a body comprising a sealable opening, a product facing body side, and a consumer facing body side;
providing an end closure stock, wherein the end closure stock comprises a product facing closure side, and a consumer facing closure side;
laminating the product facing closure side of the end closure stock with a polymer film;
forming an end closure from the end closure stock; and
sealing the body with the end closure to provide a sealed container,
wherein the consumer facing closure side is:
1) an aluminum end stock, or
2) an aluminum end stock coated with a conversion layer comprising titanium,
zirconium, compounds of trivalent chromium (Cr(III)) and phosphates, and combinations thereof.

13. The method of claim 12 , wherein the polymer film comprises a polyester film.

14. The method of claim 13 , wherein the polyester film comprises a polyethylene terephthalate (PET) film.

15. The method of claim 12 , wherein laminating the product facing closure side of the end closure stock with the polymer film comprises:
heating the polymer film to a temperature of at least 200° C.;
contacting the product facing closure side of the end closure stock with the polymer film; and
maintaining the polymer film at the temperature of at least 200° C. for 1 second to 30 seconds.

16. The method of claim 12 , wherein forming the end closure from the end closure stock comprises forming an easy open closure, a peel off closure, a beverage closure, a penny lever closure, a sanitary closure, an aerosol valve cap closure, a ring pull closure, a resealable closure, a bottle rolled-on pilfer proof closure, or any combination thereof.

17. The method of claim 12 , wherein sealing the body with the end closure comprises contacting the polymer film with the body.

18. The method of claim 17 , wherein contacting the polymer film with the body provides an air-tight closure.

19. The method of claim 12 , further comprising annealing the sealed container, wherein annealing the sealed container comprises raising a temperature of the polymer film for a duration sufficient to melt the polymer film into a surface texture of the sealed container.

Assignees

• Novelis Inc

Inventors

• Campbell Ian Mussen
• Jurendic Sebastijan

Classifications

• B65D17/401

  characterised by having the line of weakness provided in an end wall · CPC title

• B32B37/06

  characterised by the heating method · CPC title

• B65D25/14 Primary

  Linings or internal coatings (of containers made by folding or erecting blanks made of paper B65D5/56 {; linings for domestic water storage heaters F24H1/183}) · CPC title

• B65D17/02

  of curved cross-section, e.g. cans of circular or elliptical cross-section · CPC title

• B32B2439/40

  Closed containers · CPC title