Container with removable end

Patent metadata

Field	Value
Publication number	US-12466604-B2
Application number	US-202318398800-A
Country	US
Kind code	B2
Filing date	Dec 28, 2023
Priority date	Jul 8, 2019
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

The invention comprises a container comprising: a base; at least one paper-based sidewall seamed to and extending upwardly from the base, wherein the at least one sidewall comprises a score line near the base that is at least partially circumferential and is configured to be torn through to remove the base from the sidewall; and a liner ply adhered to an interior surface of the sidewall.

First claim

What is claimed is:

1 . A container comprising:
a base; at least one paper-based sidewall extending upwardly from the base, wherein the at least one sidewall comprises a score line near the base that is at least partially circumferential and is configured to be torn through to remove the base from the sidewall, wherein the score line delineates a bottom portion of the container comprising the base and a portion of the at least one paper-based sidewall, wherein the bottom portion of the container is configured to be removed from the remainder of the container; and a liner ply releasably adhered to an interior surface of the sidewall and unadhered to the base, wherein the liner ply is configured to separate from the interior surface of the paper-based sidewall after removal of the bottom portion.

2 . The container of claim 1 wherein the container sidewall comprises a composite material.

3 . The container of claim 1 wherein the container is rigid.

4 . The container of claim 1 wherein the container comprises spiral-wound paperboard.

5 . The container of claim 1 wherein the liner ply comprises a polymeric material.

6 . The container of claim 1 wherein the liner ply comprises barrier properties.

7 . The container of claim 1 wherein a releasable adhesive is disposed between the liner ply and the paper-based sidewall.

8 . The container of claim 7 wherein the adhesive comprises a polyvinyl acetate-based adhesive or a dextrin-based adhesive.

9 . The container of claim 1 wherein the base comprises metal.

10 . The container of claim 1 wherein the score line comprises a fully circumferential perforation.

11 . The container of claim 1 wherein the score line comprises a continuous cut line, is fully circumferential, and does not penetrate the entire thickness of the sidewall.

12 . The container of claim 11 wherein the score line extends substantially through the thickness of the sidewall.

13 . The container of claim 1 wherein after the bottom portion of the container is removed, a portion of the liner ply may be grasped and pulled away from the sidewall.

14 . The container of claim 13 wherein the liner ply is configured to be completely or nearly completely separated from the sidewall and pulled out of the container body.

15 . A method of recycling a container, the method comprising:
providing a container comprising:
a base;
at least one paper-based sidewall extending upwardly from the base, wherein the at least one sidewall comprises a score line near the base that is at least partially circumferential and is configured to be torn through to remove the base from the sidewall, wherein the score line delineates a bottom portion of the container comprising the base and a portion of the at least one paper-based sidewall, wherein the bottom portion of the container is configured to be removed from the remainder of the container; and
a liner ply releasably adhered to an interior surface of the sidewall and unadhered to the base, wherein the liner ply is configured to separate from the interior surface of the paper-based sidewall after removal of the bottom portion;
crushing the at least one paper-based sidewall adjacent the at least one score line; and removing the base and a portion of the at least one paper-based sidewall from a remainder of the at least one paper-based sidewall, wherein the liner ply remains with the remainder of the at least one paper-based sidewall.

16 . The method of claim 15 further comprising, after the bottom portion of the container is removed, grasping and pulling a portion of the liner ply away from the sidewall.

17 . The method of claim 16 further comprising completely or nearly completely separating the liner ply from the sidewall and pulling the liner ply out of the container body.

Assignees

• Sonoco Dev Inc

Inventors

• Carpenter Lawrence Robert
• Thomas Tony L
• Miller Paul E
• Ziegenfelder Kurt A

Classifications

• B65D3/28

  Other details of walls · CPC title

• B65D3/262 Primary

  forming a circumferential line of weakness · CPC title

• B31C3/02

  and inserting into a tube end a bottom to form a container · CPC title

• B65D2565/385

  especially suited for or with means facilitating recycling · CPC title

• B65D25/16

  Loose, or loosely-attached, linings · CPC title