Container for loose material

A packaging system for bulk goods or material comprises a hollow polygonal blown plastic form or container for accommodating the material which is to be contained therein. A cardboard cover surrounds and is fixed to the hollow plastic form. The hollow plastic form has at least one outer edge indentation in a corner area, corresponding to a polygonal area of the cardboard cover which can be folded inside for locking or securement purposes, which is symmetrical to a corner fold line of the cardboard cover, and which is connected to the cardboard cover by at least one stamped line arranged perpendicular to the corner fold line and two fold lines forming a V-shape. The packaging system enables secure fastening between the hollow plastic form and the wrapper. To achieve this, the polygonal area of the cover is shaped as a square, and the V-shaped fold lines merge into two stamped lines culminating in a point. The corner shaped indentation is defined by flat surfaces adapting to this area of the cardboard cover, which may also be plastic, or other suitable material.