US Patent 10889412 Paper closures for paper containers

A container has a fibrous lid (100) and vessel (110) that have mutually mating raised beads (104, 112). The beads are preferably formed in rings, which in the case of the lid is positioned on the underside of the cap, and in the case of the vessel is positioned at the mouth of the vessel. Also in preferred embodiments, the beads can have outward curls, inward curls, or have a split formation. Both lid and vessel are preferably made of at least 85 wt % paper. The non-paper percentages can advantageously comprise one or more of glues, adhesives, films, and/or moisture barriers, and in most preferred embodiments, the moisture barrier is also an adhesive.