Claims
- 1. A paperboard container formed of a paperboard material having a basis weight B in pounds per 3,000 square feet of material, the container having a defect free curved and curled brim formed about an upper periphery thereof wherein a maximum forming strain in percent of an inside brim circumference exceeds 4.41+0.0156.times.B, and B is in a range of 130 to 200 pounds per 3,000 square feet of material.
- 2. The container as defined in claim 1, wherein said container is a cup having a circular cross-section.
- 3. The container as defined in claim 2, wherein a machine direction of said paperboard material is oriented substantially transverse to a circumferential direction of said cup.
- 4. The container as defined in claim 1, wherein said container has a non-circular cross-section having rounded corners.
- 5. The container as defined in claim 4, wherein said container has a substantially rectangular cross-section.
- 6. The container as defined in claim 4, wherein said container has a substantially square cross-section.
- 7. The container as defined in claim 1, wherein said container has an oval cross-section having rounded ends and one of straight and curved sides extending between said rounded ends.
- 8. The container as defined in claim 1, wherein side walls of the container are tapered inwardly from a top of the container to a bottom of the container.
- 9. The container as defined in claim 1, wherein side walls of the container are substantially vertical.
- 10. A paperboard container formed of a paperboard material having a basis weight B in pounds per 3,000 square feet of material, the container having a defect free curved and curled brim formed about an upper periphery thereof wherein a machine direction of said paperboard material is oriented substantially in a circumferential direction of the container and a maximum forming strain in percent of an inside brim circumference exceeds 4.0 percent, and B is in a range of 130 to 220 pounds per 3,000 square feet of material.
- 11. The container as defined in claim 10, wherein said container is a cup having a circular cross-section.
- 12. The container as defined in claim 10, wherein said container has a non-circular cross-section having rounded corners.
- 13. The container as defined in claim 12, wherein said container has a substantially rectangular cross-section.
- 14. The container as defined in claim 12, wherein said container has a substantially square cross-section.
- 15. The container as defined in claim 10, wherein said container has an oval cross-section having rounded ends and one of straight and curved sides extending between said rounded ends.
- 16. The container as defined in claim 10, wherein side walls of the container are tapered inwardly from a top of the container to a bottom of the container.
- 17. The container as defined in claim 10, wherein side walls of the container are substantially vertical.
Parent Case Info
This application is a continuation-in-part application of application Ser. No. 208,883, filed Mar. 11, 1994, now U.S. Pat. No. 5,472,402 issued Dec. 5, 1995.
US Referenced Citations (12)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
208883 |
Mar 1994 |
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