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.

A paper-based composite container for an off-gassing product includes a paperboard can body having a substantially gas-impervious liner attached to an inner surface thereof, and a pair of substantially paper-based end closures attached to the opposite ends of the can body, each end closure defining a generally cylindrical sealing panel in contact with an inner surface of the can body. Heat-sealable materials are disposed on opposing surfaces of the sealing panel and can body. The sealing panels of the end closures are attached to the can body by heat seals. The heat seal for at least one of the end closures is discontinuous such that at least one vent channel extends through the heat seal to establish fluid communication between an interior of the container and the environment outside the container. The at least one vent channel is operable to vent excess gas pressure from the interior of the container.

The present disclosure provides a paperboard packaging container comprising a tubular paperboard container body, a container bottom and a container lid. The container body comprises a container body abutment edge at the container opening. The container body has an inner surface facing towards an inner compartment in the packaging container and an outer surface facing away from the inner compartment. The container lid comprises a lid collar having an abutment edge adapted for abutting against the container body abutment edge, and a lid plug-in portion. The plug-in portion has a side surface extending in the longitudinal direction and faces the inner surface of the container body, when the container lid is in a closed position. The lid collar is made of the same material as the container body and the lid collar is delimited from the container body by a slit or by weakening means.

A container blank including a paperboard shell layer and a core layer. The container blank has a predetermined removable portion the provides for a separable cap portion after the container blank is erected. The container blank can include a lobe for tightly fitting the cap portion to the body portion of the erected container and or provide for a core rim that is located at a rim distance that is a function of position about the longitudinal axis of the container and or include at least one dosing indicia.

A baking container having one or more rupture lines for ease of removal and separation from a baked foodstuff is described herein. The baking container has a sidewall and a planar bottom face. One or more rupture lines may run down a height of the sidewall and across a portion or all of the planar bottom face. Rupture lines having even spacing may form a strip, and the strip may have a pull tab to easily tear through the sidewall. The strip may be reinforced with a string or ribbon. The rupture lines may be formed by perforating or weakening areas of the baking container.

The invention relates to a container for receiving contents, in particular liquid foods, having a tubular main body and having at least one molded fiber part connected to the main body, and to a method for producing such a container. For the container to be suitable for being aseptically filled with liquid or paste-like foods, the inner face of the at least one molded fiber part is coated to be gas and liquid tight. The container is produced as follows: pressing at least one molded fiber part from pulp, coating the inner face(s) of the molded fiber part or parts, providing the tubular main body, connecting the main body to the (first) molded fiber part for generating a container that is open on one side, filling the container through the open side, and closing the container by folding or by joining to the (further) molded fiber part.

The invention relates to a container for receiving contents, in particular liquid foods, having a tubular main body and having at least one molded fiber part connected to the main body, and to a method for producing such a container. For the container to be suitable for being aseptically filled with liquid or paste-like foods, the inner face of the at least one molded fiber part is coated to be gas and liquid tight. The container is produced as follows: pressing at least one molded fiber part from pulp, coating the inner face(s) of the molded fiber part or parts, providing the tubular main body, connecting the main body to the (first) molded fiber part for generating a container that is open on one side, filling the container through the open side, and closing the container by folding or by joining to the (further) molded fiber part.

A paper-based composite container for an off-gassing product includes a paperboard can body having a substantially gas-impervious liner attached to an inner surface thereof, and a pair of substantially paper-based end closures attached to the opposite ends of the can body, each end closure defining a generally cylindrical sealing panel in contact with an inner surface of the can body. Heat-sealable materials are disposed on opposing surfaces of the sealing panel and can body. The sealing panels of the end closures are attached to the can body by heat seals. The heat seal for at least one of the end closures is discontinuous such that at least one vent channel extends through the heat seal to establish fluid communication between an interior of the container and the environment outside the container. The at least one vent channel is operable to vent excess gas pressure from the interior of the container.

The present disclosure provides a method of forming a paperboard packaging container comprising a tubular paperboard container body, a container bottom and a container lid. The container body comprises a container body abutment edge at the container opening. The container body has an inner surface facing towards an inner compartment in the packaging container and an outer surface facing away from the inner compartment. The container lid comprises a lid collar having an abutment edge adapted for abutting against the container body abutment edge, and a lid plug-in portion. The plug-in portion has a side surface extending in the longitudinal direction and faces the inner surface of the container body, when the container lid is in a closed position. The lid collar is made of the same material as the container body and the lid collar is delimited from the container body by a slit or by weaking means.

An inter-connecting structure is provided for connecting multiple parts of a container. The inter-connecting structure comprises a first part comprising a plurality of inter-connecting tabs and slits on an edge; a second part comprising a plurality of inter-connecting tabs and slits on an edge to be joined with the edge of the first part; wherein the inter-connecting tabs and slits share an overlapping portion and once the two parts are connected to each other, the engaged inter-connecting tabs are disposed in an internal region of the container.