Container construction with flexible liner and one-way valve

Patent metadata

Field	Value
Publication number	US-12145771-B2
Application number	US-202318198028-A
Country	US
Kind code	B2
Filing date	May 16, 2023
Priority date	Jul 8, 2019
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

In an embodiment, the invention comprises a container comprising: a base; at least one sidewall extending upwardly from the base and terminating in a top edge, wherein the at least one sidewall is paper-based; a removable flexible membrane adhered to the top edge, wherein the membrane comprises a one-way valve; a liner ply at least partially adhered to an interior surface of the sidewall, wherein the liner ply is configured to at least partially release from the sidewall upon a pressure differential between the pressure within the container and the external pressure.

First claim

What is claimed is:

1. A container comprising:
a base;
at least one sidewall extending upwardly from the base and terminating in a top edge, wherein the at least one sidewall is paper based;
a removable flexible membrane adhered to the top edge, wherein the membrane comprises a one-way valve;
a liner ply adhered to an interior surface of the sidewall with a releasable adhesive, wherein the liner ply is configured to at least partially release from the sidewall upon a first pressure differential between the pressure within the container and an external pressure; and
wherein the adhesive is resealable and configured to allow readherence of the liner ply to the container sidewall upon a second pressure differential between the pressure within the container and an external pressure.

2. The container of claim 1 , wherein the first pressure differential comprises an internal pressure within the container which is less than atmospheric pressure.

3. The container of claim 1 , wherein the adhesive has 100% coverage between the liner ply and the at least one sidewall.

4. The container of claim 1 , wherein the second pressure differential comprises an internal pressure within the container which is greater than atmospheric pressure.

5. The container of claim 1 , wherein the liner ply may repeatedly release from and reseal to the container sidewall as pressure differentials occur.

6. The container of claim 1 , wherein the pressure differential comprises between about 4 inches mercury and about 10 inches mercury.

7. The container of claim 1 , wherein the adhesive maintains its adhesion along the container sidewall nearest the base and top edge, regardless of pressure differential.

8. The container of claim 1 , wherein the adhesive is corn starch-based, dextrin-based, or is a pressure sensitive adhesive.

9. The container of claim 1 , wherein the container is rigid.

10. The container of claim 1 , wherein the liner ply comprises a polymeric material having barrier properties.

11. The container of claim 1 , wherein the one-way valve is integrally formed with the top membrane.

12. The container of claim 1 , wherein the one-way valve is externally applied to the top membrane.

13. A container comprising:
a base;
at least one sidewall extending upwardly from the base and terminating in a top edge, wherein the at least one sidewall is paper based;
a removable flexible membrane adhered to the top edge, wherein the membrane comprises a one-way valve; and
a liner ply attached to the base and a top edge of the sidewall, wherein the liner ply is at least partially adhered to an interior surface of the sidewall with a releasable adhesive, wherein at least 50% of the liner ply is configured to at least partially release from the sidewall between the base and the top edge, upon a pressure differential between the pressure within the container and an external pressure, and wherein the adhesive maintains its adhesion along the container sidewall nearest the base and top edge, regardless of pressure differential.

14. The container of claim 13 , wherein at least 75% of the liner ply releases from the sidewall.

15. The container of claim 13 , wherein the adhesive is corn starch-based, dextrin-based or is a pressure sensitive adhesive.

16. A container comprising:
a base;
at least one sidewall extending upwardly from the base and terminating in a top edge, wherein the at least one sidewall is paper based;
a removable flexible membrane adhered to the top edge, wherein the membrane comprises a one-way valve;
a liner ply attached to an interior surface of the sidewall, wherein the liner ply is at least partially adhered an interior surface of the sidewall with a releasable adhesive, wherein the liner ply is configured to at least partially release from a midsection of the interior surface between the base and the top edge, upon a pressure differential between the pressure within the container and an external pressure; and
wherein the liner ply may repeatedly release from and reseal from the midsection of the interior surface of the sidewall as pressure differentials occur.

17. The container of claim 16 , wherein the adhesive has 100% coverage between the liner ply and the at least one sidewall.

18. The container of claim 16 , wherein the resealable adhesive is pattern applied to either the liner ply or the at least one sidewall.

19. The container of claim 18 , wherein the pattern applied adhesive between the liner ply and the at least one sidewall comprises one or more adhesive-free regions.

20. The container of claim 18 , wherein the liner ply retains its adhesion to the at least one sidewall in the areas where the pattern adhesive is applied, regardless of pressure differential.

Assignees

• Sonoco Dev Inc

Inventors

• Dixon-Garrett Sabrina V
• Carpenter Lawrence Robert

Classifications

• B65D2577/205

  integral with the closure · CPC title

• B65D51/20

  Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing {(B65D51/185 takes precedence; co-operating with an auxiliary container for additional articles or materials B65D51/28)} · CPC title

• B65D17/502

  applied to the external part of the container wall only · CPC title

• B65D3/04

  essentially cylindrical · CPC title

• B65D3/268 Primary

  the opening arrangement being located in a container closure · CPC title