Co-extruded film without a barrier, with good optics and mechanical resistance properties that are appropriate for use as secondary packaging. It is provided per thousands of units. Preformed, padded film or with bellows, with either a seal on the front or the side. Its characteristics in terms of size and functions should be consulted beforehand. They are ideal for recycling processes and the circular economy. They can be provided in the form of reels with pre-cut material.