Container with corrugations

Patent metadata

Field	Value
Publication number	US-11623781-B2
Application number	US-201816485206-A
Country	US
Kind code	B2
Filing date	Feb 2, 2018
Priority date	Feb 14, 2017
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

The present invention relates to a container with a side wall of plastic encloses a container volume. Horizontally oriented grooves spaced vertically apart from one another are formed in the side wall, and the grooves include first grooves for stiffening the side wall. The first grooves have a first groove depth and are configured such that a projection protruding into the enclosed container volume is formed in the inner surface of the side wall. The grooves also include second grooves having a second groove depth. The first groove depth is greater than the second groove depth. The first and second grooves are arranged such that at least one second groove is in each case arranged in the vertical direction between two first grooves. The subvolumes enclosed by two horizontal planes, which are defined by two adjacent grooves, and the side wall are in each case identical.

First claim

The invention claimed is:

1. A container with
a side wall of plastic which encloses a container volume,
wherein horizontally oriented grooves spaced vertically apart from one another are formed in the side wall,
wherein the grooves comprise first grooves for stiffening the side wall, which first grooves have a first groove depth and are configured such that a projection protruding into the enclosed container volume is formed in the inner surface of the side wall,
wherein the grooves moreover comprise second grooves which have a second groove depth, wherein the first groove depth is greater than the second groove depth, and
wherein the first and second grooves are arranged such that at least one second groove is in each case arranged in the vertical direction between two first grooves,
wherein the side wall and the horizontally oriented grooves of the side wall, with regard to the material and the thickness, are configured such that the side wall and the horizontally oriented grooves are not deformed when there is a negative pressure in the enclosed container volume, even if as a result of the negative pressure a pressure of 1 atm acts on the side wall and the horizontally oriented grooves, and
subvolumes enclosed by two horizontal planes, which are defined by two adjacent grooves, and the side wall are in each case identical.

2. The container according to claim 1 , wherein the side wall is transparent or translucent, at least in the region of the horizontally oriented grooves spaced vertically apart from one another.

3. The container according to claim 1 , wherein the grooves form a scale for the volume received by the container, wherein the subvolume enclosed by a container base, the side wall and a horizontal plane defined by the lowermost groove is an integer multiple of the subvolume enclosed by two horizontal planes, which are defined by two adjacent grooves, and the side wall.

4. The container according to claim 1 , wherein two adjacent first grooves are in each case at a vertical distance a from each other, wherein the condition 0.10 D≤a≤0.30 D is met for the vertical distance a, wherein D is the greatest possible horizontal internal extent inside the container in the region of the vertical distance a between the two adjacent grooves.

5. The container according to claim 1 , wherein the condition 0.01 D≤t 1 ≤0.10 D, is met for the first groove depth, wherein D is the greatest possible horizontal internal extent inside the container in the region of the vertical distance a between two adjacent grooves, and t 1 is the first groove depth.

6. The container according to claim 1 , wherein the condition 0.005 D≤t 2 ≤0.05 D, is met for the second groove depth, wherein D is the greatest possible horizontal internal extent inside the container in the region of the vertical distance a between two adjacent grooves, and t 2 is the second groove depth.

7. The container according to claim 4 , wherein the side wall of the container has a circular cross section, and D is the internal diameter of the side wall between the grooves.

8. The container according to claim 1 , wherein the first grooves are arc-shaped at the first groove depth.

9. The container according to claim 1 , wherein the first grooves have the contour of a circle segment at the first groove depth.

10. The container as claimed in claim 9 , wherein the ratio of the first groove depth to the radius of the circle of the circle segment (r) of the first grooves is in a range of 1.5 to 2.5.

11. The container according to claim 1 , wherein the projection, which is formed from one of the first grooves and which in the inner surface of the side wall protrudes into the enclosed container volume, has a rounded transition to the inner surface of the side wall.

12. The container according to claim 1 , wherein each of the grooves is configured as a closed ring in the side wall.

13. The container according to claim 1 , wherein the plastic from which the side wall is made is composed of high-density polyethylene (HDPE) or co-extruded plastic films (COEX).

14. The container according to claim 1 , wherein the thickness (d) of the side wall is substantially constant at and between the grooves.

15. The container according to claim 1 , wherein a recloseable opening is formed above the uppermost groove.

16. The container according to claim 4 , wherein the condition 0.15 D≤a≤0.25 D, is met for the vertical distance a.

17. The container according to claim 5 , wherein the condition 0.03 D≤t 1 ≤0.07 D, is met for the first groove depth.

18. The container according to claim 6 , wherein the condition 0.01 D≤t 2 ≤0.03 D, is met for the second groove depth.

19. The container according to claim 5 , wherein the side wall of the container has a circular cross section, and D is the internal diameter of the side wall between the grooves.

20. The container according to claim 6 , wherein the side wall of the container has a circular cross section, and D is the internal diameter of the side wall between the grooves.

Assignees

• Basf Se

Inventors

• Lischetzki Peter
• Reinhardt Tom
• Kroeger Harald
• Huber Robert

Classifications

• B65D1/44

  Corrugations · CPC title

• B65D1/0223 Primary

  characterised by shape · CPC title

• B65D2203/04

  Level indicators · CPC title

• B65D1/0207

  characterised by material, e.g. composition, physical features · CPC title

• B65D2501/0036

  Hollow circonferential ribs · CPC title