Films that are co-extruded or assembled using two layers, they are either pre-formed with padding or bellows, they may either bear a seal on the front or the side. The characteristics of their sizes and functions should be consulted beforehand. Their barrier may either be low or medium and they are recommended for dry products, pellets or granules. Printing can be provided on per surface. The caliber of the film ranges between 110 and 190 microns, it can cover contents that weigh between 8 and 30 kilograms, depending on the density of the product.