Hermetically sealed paperboard containers with enhanced barrier performance

摘要

A hermetically sealed paperboard container with enhanced barrier and seal performances is disclosed that may be produced by a more effective and economical process for the in-plant system. The container includes a container body component, a bottom, and a top lid hermetically sealed to the body component. The container body is formed from a blank comprising a paperboard (201) having one surface coated with a first sealant layer (202) and the opposite surface coated with a barrier layer (203), and a second sealant layer (204) applied over the barrier layer (203). One longitudinal end of the blank is skived to a predetermined thickness for a predetermined width, folded over onto the blank, and sealed to form a folded longitudinal end. Then, the folded longitudinal end of the blank is overlapped inside the other longitudinal end of the blank to form a body seam that is subsequently sealed to provide the hollow container body.