Pressed paperboard bowl with wide upper rim

Patent metadata

Field	Value
Publication number	US-12016474-B2
Application number	US-202217735758-A
Country	US
Kind code	B2
Filing date	May 3, 2022
Priority date	Jul 9, 2021
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

A disposable bowl press-formed from a generally planar paperboard blank. The bowl has a large capacity, wide flange for easy handling and exhibits excellent rim stiffness. The bowl can include a bottom panel, a sidewall extending upwardly and outwardly from the bottom panel and a flange extending outwardly from the sidewall. The flange includes a rim portion having an arched central crown with a convex upper surface defining a radius of curvature RC of 0.650 to 1.180; and annular transition from the rim portion defining a radius of curvature, R 3 , and an evert extending downwardly from the annular transition, R 3 , wherein the bowl has an outermost diameter D of about 8″ to about 10″ and a height to diameter ratio, H/D, of from 0.18 to 0.20.

First claim

What is claimed is:

1. A disposable bowl press-formed from a generally planar paperboard blank, comprising:
(a) a bottom panel;
(b) a first annular transition from the bottom panel defining a first radius of curvature, R 1 ;
(c) a sidewall extending upwardly and outwardly from the first annular transition;
(d) a second annular transition from the sidewall defining a second radius of curvature, R 2 ; and
(e) a flange extending outwardly from the second annular transition portion, the flange comprising:
(1) a rim portion having an arched central crown with a convex upper surface defining a radius of curvature, RC;
(2) a third annular transition from the rim portion defining a third radius of curvature, R 3 ,
(3) an evert extending downwardly from the third annular transition,
wherein the bowl has an outermost diameter, D, of about 8″ to about 10″ and a height to diameter ratio, H/D, of from 0.18 to 0.20; and
(4) a flange width, W, that is a distance between intersecting points of a horizontal line extending through the sidewall and the outermost diameter D, wherein a ratio of the flange width to RC (W:RC) is 0.50 to 1.00.

2. The disposable bowl of claim 1 , wherein a ratio of R 2 to RC (R 2 :RC) is 0.050 to 0.150 .

3. The disposable bowl of claim 1 , wherein a ratio of R 3 to RC (R 3 :RC) is 0.050 to 0.150.

4. The disposable bowl of claim 1 , wherein R 2 is equal to R 3 .

5. The disposable bowl of claim 1 , wherein R 2 is not equal to R 3 .

6. The disposable bowl of claim 1 , wherein the ratio of the flange width to RC (W:RC) is 0.52 to 0.92.

7. The disposable bowl of claim 1 , wherein a ratio of the flange width to H (W:H) is 0.30 to 0.40.

8. The disposable bowl of claim 1 , wherein a ratio of the flange width to H (W:H) is 0.32 to 0.37.

9. The disposable bowl of claim 1 , wherein a ratio of the flange width to D (W:D) is 0.055 to 0.075.

10. The disposable bowl of claim 1 , wherein a ratio of the flange width to D (W:D) is 0.060 to 0.070.

11. The disposable bowl of claim 1 , wherein a volume of the bowl is greater than 30 fluid ounces.

12. The disposable bowl of claim 1 , wherein the bottom panel has an arched central crown with a convex upper surface.

13. The disposable bowl of claim 12 , wherein a portion of the arched central crown of the bottom panel defines a substantially continuous, convex arched profile spanning at least 75% of the horizontal distance between the center of the bottom panel and the first annular transition.

14. The disposable bowl of claim 1 , wherein the sidewall is generally straight.

15. The disposable bowl of claim 14 , wherein a first end of the generally straight sidewall is adjacent the first annular transition and a second end of the generally straight sidewall is adjacent the second annular transition.

16. The disposable bowl of claim 1 , wherein the bottom panel has a generally planar upper surface.

17. A disposable bowl press-formed from a generally planar paperboard blank, comprising:
(a) a bottom panel;
(b) a first annular transition from the bottom panel defining a first radius of curvature, R 1 ;
(c) a sidewall extending upwardly and outwardly from the first annular transition;
(d) a second annular transition from the sidewall defining a second radius of curvature, R 2 ; and
(e) a flange extending outwardly from the second annular transition portion, the flange comprising:
(1) a rim portion having an arched central crown with a convex upper surface defining a radius of curvature, RC, of 0.650″ to 1.180″;
(2) a third annular transition from the rim portion defining a third radius of curvature, R 3 ,
(3) an evert extending downwardly from the third annular transition, and
(4) a flange width, W, that is a distance between intersecting points of a horizontal line extending through the sidewall and an outermost diameter, D, of the bowl, wherein a ratio of the flange width to RC (W:RC) is 0.50 to 1.00, the outermost diameter, D, is about 8″ to about 10″, and a height to diameter ratio (H:D) is from 0.18 to 0.20.

18. The disposable bowl of claim 17 , wherein a ratio of the flange width to H is 0.30 to 0.40 and a ratio of the flange width to outermost diameter D is 0.055 to 0.075.

19. The disposable bowl of claim 17 , wherein a volume of the bowl is greater than 30 fluid ounces.

20. A disposable bowl press-formed from a generally planar paperboard blank, comprising:
(a) a bottom panel;
(b) a first annular transition from the bottom panel defining a first radius of curvature, R 1 ;
(c) a sidewall extending upwardly and outwardly from the first annular transition;
(d) a second annular transition from the sidewall defining a second radius of curvature, R 2 ; and
(e) a flange extending outwardly from the second annular transition portion, the flange comprising:
(1) a rim portion having an arched central crown with a convex upper surface defining a radius of curvature, RC, of 0.650″ to 1.180″;
(2) a third annular transition from the rim portion defining a third radius of curvature, R 3 ,
(3) an evert extending downwardly from the third annular transition, and
(4) a flange width, W, that is a distance between intersecting points of a horizontal line extending through the sidewall and an outermost diameter, D, of the bowl,
wherein:
a ratio of R 2 to RC (R 2 :RC) is 0.050 to 0.150,
a ratio of the flange width to RC (W:RC) is 0.50 to 0.92,
a ratio of the flange width to bowl height (W:H) is 0.30 to 0.40,
a ratio of the flange width to outermost diameter D (W:D) is 0.060 to 0.070,
the bowl has an outermost diameter D of about 8″ to about 10″,
the bowl has a height to diameter ratio, H/D, of from 0.18 to 0.20, and
the bowl has a volume that is greater than 30 fluid ounces.

Assignees

• Gpcp Ip Holdings Llc

Inventors

• Berg Eric John

Classifications

• B65D1/34 Primary

  Trays or like shallow containers {(B65D81/3813 takes precedence)} · CPC title

• A47G19/03 Primary

  for using only once, e.g. made of paper · CPC title