Films that are co-extruded or assembled using two or three layers, they are pre-formed in the style of Doy Packs. Lateral valves are often inserted inside. Please enquire about the sizes and functions. Recommended for pastes or liquid products. The caliber of the film ranges between 90 and 180 microns and it can cover products that weigh between 100 grams and 1 kilogram. PLEASE CONSULT US IF YOUR PRODUCT IS HEAVIER.