Three-dimensionally shaped bulk material packaging cushioning element exclusively for use as bulk material filling material made from fiber-based flat blanks with mechanical rebound barrier and form-fitting interlocking geometry

Abstract

A three-dimensional packaging cushioning element made from a flat blank of a fiber-based material exclusively for use as a loose-fill filling material, characterized in that the packaging cushioning element is formed by mechanically forming a flat blank and has a central forming surface (4) as well as lateral flanks (1) raised from the forming surface, wherein at least one stiffening zone or stiffening rib (3) produced by plastic fiber compaction, compression or indentation is formed in the transition or wall area between the forming surface (4) and the flanks (1), which mechanically blocks an elastic rebound of the element to the flat original state, and wherein the outer contour of the flanks comprises several protruding corners, points, teeth or contour projections (2),which are designed for the mutual interlocking and interlocking of adjacent packaging cushion elements under pressure and impact loads in a bed of bulk material.