US Patent 10370158 Container with display function

The present invention provides a packaging container for bulk solids, the container comprising a container body and a container lid. The container body includes wall portions that define a container opening. The lid comprises an upper outer lid surface which includes a slanted lid surface. The upper outer lid surface and the slanted lid surface each having a projected surface in the plane of the container opening. The projected surface of the slanted lid surface constitutes from 40% to 100%, 50% to 90%, or 60% to 80% of the projected surface of the upper outer lid surface. The slanted lid surface is slanted such that when the lid is in a closed position at the container opening, a front end edge of the slanted lid surface is located lower in the height direction of the container than a rear end edge of the slanted lid surface.