Container construction with flexible liner and one-way valve
AssigneeSonoco Development, Inc.
InventorsSabrina V. Dixon-Garrett, Lawrence Robert Carpenter
Life of this patent
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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.
Claims19
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 partially adhered to an interior surface of the sidewall with an adhesive, wherein the adhesive is pattern applied such that portions of the liner ply are unadhered to the interior surface of the sidewall in unadhered portions and, wherein the liner ply is configured to release from the sidewall in at least some of the unadhered portions upon a pressure differential between the pressure within the container and the external pressure.
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 pattern adhered to an interior surface of the sidewall, with an adhesive, wherein the adhesive is pattern applied to form unadhered areas between the patterned adhesive and wherein the liner ply is configured to flex, in the unadhered areas, toward and away from the sidewall upon a pressure differential between the pressure within the container and the external pressure.
Dependencies are inferred from the claim text.