Raised seal surface for container

• US 20040182047A1
• Filed: 03/21/2003
• Published: 09/23/2004
• Est. Priority Date: 03/21/2003
• Status: Active Grant

• Current Assignee: Ball Corporation
• Original Assignee: Pechiney Emballage Flexible Europe
• Inventors: Thierjung, George A., Lamb, James R.
• Granted Patent: US 6,823,651 B2
• Time in Patent Office: Days
• US Class Current: 53/421
• CPC Class Codes: B65D 1/023 Neck construction
• CPC Class Codes: B65D 41/0442 Collars or rings B65D41/0457 takes precedence

Abstract

A thermoplastic retort container for receiving a closure having a compressible gasket. The present invention further includes a sealing system for sealing the finish of a thermoplastic retort container. The sealing system includes a finish configured to engage a compressible gasket within a closure. Moreover, the present invention includes a method of sealing a container using a closure having a compressible gasket, wherein the container has a land portion for engaging the compressible gasket.

Claims

1. A container for receiving a closure having a compressible gasket comprising:

a finish for receiving the closure; and

a land portion extending from the outer diameter of said finish for interacting with the compressible gasket.

2. The container of claim 1 wherein said land portion extends from said finish at an angle of approximately fifteen degrees from perpendicular.

3. The container of claim 1 wherein said land portion extends from said finish at an angle between approximately ten to twenty-five degrees from perpendicular.

4. The container of claim 1 wherein said land portion is tapered.

5. The container of claim 1 wherein said land portion is formed via extrusion blow molding.

6. A sealing system for a container comprising:

a finish;

a land portion extending from said finish;

a compressible gasket adjacent to said land portion; and

a closure for engaging said finish and compressing said compressible gasket against said land portion.

7. The sealing system of claim 6 wherein said land portion extends from said finish at an angle of approximately fifteen degrees from perpendicular.

8. The sealing system of claim 6 wherein said land portion extends from said finish at an angle between approximately ten to twenty-five degrees from perpendicular.

9. The sealing system of claim 6 wherein said land portion is tapered.

10. The sealing system of claim 6 wherein said land portion is formed via extrusion blow molding.

11. The sealing system of claim 6 wherein said closure is a threaded closure.

12. The sealing system of claim 6 wherein said closure includes a gasket liner channel.

13. The sealing system of claim 6 wherein said compressible gasket is formed from a plastisol material.

14. The sealing system of claim 6 wherein said land portion is tapered.

15. A method of sealing a container comprising:

providing a container having a finish and a land portion extending from said finish;

providing a closure having a compressible gasket liner; and

engaging said closure to said finish such that said closure holds said compressible gasket against said finish.

16. The method of claim 15 wherein said compressible gasket is compressed between approximately ten to twenty-five thousandths of an inch.

17. The method of claim 15 wherein engaging said closure to said finish further includes engaging said closure to said finish using approximately twenty to forty-five inch-pounds of torque.

18. The method of claim 15 wherein said land portion extends from said finish at an angle of approximately fifteen degrees from perpendicular.

19. The method of claim 15 wherein said compressible gasket liner is formed from plastisol.

20. The method of claim 15 wherein said closure is a threaded closure.