Packaging container

A package comprising an outer container of stiff material, and an inner container of flexible sheet material, said inner container having a shape of a parallelepiped and being positioned within the inner space of said outer container for enclosing material therein, said inner container being made of a continuous flat sheet of material and having four side walls, a top wall, and a bottom wall which define said parallelepiped shape, each of two of said four side walls opposite to one another having thereon extending the entire longitudinal length thereof a weld seam, each of said two side walls also having attached thereto a flap extending from said top wall and being folded toward said bottom wall and sealed against the respective side walls, each flap comprising a weld seam continuous with the weld of its respective side surface, said top wall being constituted by the thickness of the sheet of material of the inner container and being free from flaps and folds to form a flat smooth surface, said bottom wall comprising a plurality of flaps continuous with said four side walls and sealed together to constitute a tight seal;

• said outer container comprising four side walls corresponding to said four side walls of said inner container, a top wall corresponding to said top wall of said inner container, and a bottom wall corresponding to said bottom wall of said inner container, said outer container further comprising a circumferential flange positioned adjacent to and spaced from said top wall of said outer container, said circumferential flange extending inwardly from the inner walls of said four side walls of said outer container so as to overlap said top wall of said inner container, said circumferential flange also having means for securing said top wall of said inner container thereto, weld seams at the juncture between said flaps and the side walls, said weld seams extending along the width of said side walls and stabilizing the folds between the flaps and side walls and the shape of the inner container in the region of the securing of said top wall with the circumferential flange of the outer container, and a cover lid sealably fittable within the outer container for enabling the removal of the material contained in said inner container and the subsequent closing thereof, said cover lid resting in its closed position sealably on said circumferential flange, whereby upon the cutting open of said top wall of said inner container via the opening defined by said circumferential flange the filling material in said inner container may be discharged.