Tear-away container top

• US 6,419,152 B1
• Filed: 03/27/2000
• Issued: 07/16/2002
• Est. Priority Date: 02/09/1998
• Status: Expired due to Term

• Current Assignee: SIG Combibloc Inc. (SIG Group AG)
• Original Assignee: SIG Combibloc Inc. (SIG Group AG)
• Inventors: Tokarski, Michael G.
• Primary Examiner(s): Elkins, Gary E.
• Application Number:
  US09/537,465
• Time in Patent Office: 841 Days
• Field of Search: 229/125.42, 229/235, 229/237, 229/241, 229/242, 229/206, 229/216, 493/63, 493/73, 493/110, 493/148, 493/372
• US Class Current: 229/235
• CPC Class Codes: B65D 5/065 with supplemental means facilitating the opening, e.g. tear lines, tear tabs
• CPC Class Codes: B65D 5/541 the lines of weakness being provided in one or more closure flaps

Abstract

The present invention is directed to a container having a tear-away top. In general, the container comprises an outer substrate layer, an inner aseptic layer secured to the outer substrate layer, and a cut in the outer substrate layer. In order to preserve the product in the container, the cut is of a predetermined depth such that the cut does not puncture the inner aseptic layer. The cut, however, is sufficiently deep so that a predetermined portion of the top may be torn away from the container at the cut. The present invention also includes a method for manufacturing a container that has a tear-away top. The method generally includes the steps of providing an outer substrate layer, securing an inner aseptic layer to the outer substrate layer, making a cut of predetermined depth in the outer substrate layer such that the cut does not puncture the inner aseptic layer, and then forming a container. After the container has been formed, a predetermined portion of the top may be torn away from the container at the cut.

Claims

1. A container having a top, a bottom, and at least one wall connecting said top and said bottom, said container comprising:

an outer substrate layer;

an inner aseptic layer secured to said outer substrate layer; and

a cut of predetermined depth in said outer substrate layer on a top surface and at least one wall surface of said container, such that said cut does not puncture said inner aseptic layer;

whereby a predetermined portion of said top and a predetermined portion of said at least one wall may be torn away from said container at said cut, thereby forming an opening through both said top and said at least one wall such that a user is enabled to pour the contents of said container through said opening.

2. The container of claim 1 wherein said inner aseptic layer includes an oxygen barrier layer which substantially prevents the transmission of oxygen through said container.

3. The container of claim 1 wherein said inner aseptic layer includes a photic barrier layer which substantially controls light transmission through said container.

4. The container of claim 1 wherein said cut does not compromise the aseptic quality of said inner aseptic layer.

5. The container of claim 1 wherein said cut has a predetermined shape such that a pouring guide is created when said predetermined portions are torn away from said container.

6. The container of claim 1 wherein said cut is a perforated cut.

7. The container of claim 1 wherein said cut is a scored cut.

8. The container of claim 1 wherein said cut is a laser cut.

9. The container of claim 1 wherein said outer substrate layer includes a paperboard layer.

10. The container of claim 1 wherein all of said top may be torn away from said container at said cut.

11. The container of claim 1 wherein said predetermined portion of said top is all of said top.

12. A method for manufacturing a container having a top, a bottom, and at least one wall connecting said top and said bottom, said top and said at least one wall having a predetermined portion which may be torn away from said container, said method comprising the steps of:

providing a material having an outer substrate layer, and an inner aseptic layer secured to said outer substrate layer;

making a cut of predetermined depth in a top surface and at least one wall surface of said outer substrate layer such that said cut does not puncture said inner aseptic layer; and

forming a container;

whereby said predetermined portion of said top and at least one wall surface may be torn away from said container at said cut to form an opening through both said top and said at least one wall such that a user is enabled to pour the contents of said container through said opening.

13. The method of claim 12 wherein said inner aseptic layer includes an oxygen barrier layer which substantially prevents the transmission of oxygen through said container.

14. The method of claim 12 wherein said inner aseptic layer includes a photic barrier layer which substantially controls light transmission through said container.

15. The method of claim 12 wherein said cut does not compromise the aseptic quality of said inner aseptic layer.

16. The method of claim 12 wherein said cut has a predetermined shape such that a pouring guide is created when said predetermined portion is torn away from said container.

17. The method of claim 12 wherein said cut is a perforated cut.

18. The method of claim 12 wherein said cut is a scored cut.

19. The method of claim 12 wherein said cut is made by a laser.

20. The method of claim 12 wherein said outer substrate layer includes a paperboard layer.

21. The method of claim 12 wherein all of said top may be torn away from said container at said cut.

22. The method of claim 12 wherein all of said top and said at least one wall having a predetermined portion may be torn away from said container.

23. The method of claim 22 wherein said cut has a predetermined shape such that a pouring guide is created when said all of top and said predetermined portion is torn away from said container.

24. A container having a top and a bottom, said container comprising:

an outer substrate layer;

an inner aseptic layer secured to said outer substrate layer; and

a cut of predetermined depth in said outer substrate layer, on a top surface of said container, such that said cut does not puncture said inner aseptic layer;

whereby all of said top may be torn away from said container at said cut to form an opening such that a user is enabled to pour the contents of said container through said opening.

25. A method for manufacturing a container having a top and a bottom, said top able to be torn off of said container, said method comprising the steps of:

providing a material having an outer substrate layer and an inner aseptic layer secured to said outer substrate layer;

making a cut of predetermined depth in a top surface of said outer substrate layer such that said cut does not puncture said inner aseptic layer; and

forming a container;

whereby all of said top may be torn away from said container at said cut to form an opening such that a user is enabled to pour the contents of said container through said opening.