US Patent 11840388 Multilayered container and inner container

A multilayered container includes an inner container configured to contain content, and an outer container configured to accommodate the inner container. The inner container has a side surface formed with a plurality of folded pleats contractable and expandable in a vertical direction, so that the inner container is shrinkable inside the outer container. The inner container includes a metal layer or an inorganic layer. A discharge mechanism, configured to discharge the content, and including a mechanism configured to prevent air from entering the inner container when discharging the content, is attached to an upper surface of the inner container.