Co-extruded films that come in the form of a tubular padded reel or a tubular reel with bellows, they either bear a seal on the front or the side. The characteristics of the size and functions should be consulted beforehand. The barrier against oxygen and humidity ranges from low to high; it is recommended for dry products, pellets, granules or pasty products (high viscosity). Printing can be provided on the external surface. The caliber of the film ranges between 110 and 190 microns. It can be used for products that weigh between 5 and 30 kilos, depending on the density of the product.