Pressed paperboard bowl with wide upper rim

Patent metadata

Field	Value
Publication number	US-2023011217-A1
Application number	US-202217735758-A
Country	US
Kind code	A1
Filing date	May 3, 2022
Priority date	Jul 9, 2021
Publication date	Jan 12, 2023
Grant date	—

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 of 0.650 to 1.180;
(2) a third annular transition from the rim portion defining a third radius of curvature, R 3 , and
(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.

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 , further comprising a flange width 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 is 0.50 to 1.00.

7 . The disposable bowl of claim 6 , wherein the ratio of the flange width to RC is 0.52 to 0.92.

8 . The disposable bowl of claim 6 , wherein a ratio of the flange width to H is 0.30 to 0.40.

9 . The disposable bowl of claim 6 , wherein a ratio of the flange width to H is 0.32 to 0.37.

10 . The disposable bowl of claim 6 , wherein a ratio of the flange width to D is 0.055 to 0.075.

11 . The disposable bowl of claim 6 , wherein a ratio of the flange width to D is 0.060 to 0.070.

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

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

14 . The disposable bowl of claim 13 , 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.

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

16 . The disposable bowl of claim 15 , 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.

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

18 . 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 having width measured as a distance between intersecting points of a horizontal line extending through the sidewall and the outermost diameter D, 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 , and
(3) an evert extending downwardly from the third annular transition,
wherein the bowl has an outermost diameter D of about 8″ to about 10″, a height to diameter ratio, H/D, of from 0.18 to 0.20, and a ratio of the flange width to RC is 0.50 to 1.00.

19 . The disposable bowl of claim 18 , 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.

20 . The disposable bowl of claim 18 , wherein a volume of the bowl 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