Thermoformable foam sheeting for producing open containers

THE INVENTION IS RELATED TO A THERMAL-FORMABLE COATING CONSISTING OF FOAM MATERIAL OR CONTAINING AT LEAST ONE LAYER OF FOAM MATERIAL. THE COVERING OF THE INVENTION IS PARTICULARLY APPLICABLE FOR THERMOMAKING MUGS OR TRAYS FOR THE PACKAGING AND / OR CONSUMPTION OF FOOD PRODUCTS, BASED ON STRETCHING OR STUFFING THE COATING AND EXPANDING THE FOAM MATERIAL. THE FOAM MATERIAL OF THE COATING OF THE INVENTION CONSISTS OF A MIXTURE OF POLYPROPYLENE CONTAINING 50 TO 100% OF HIGH FUSION RESISTANCE POLYPROPYLENE, HAS A DENSITY OF 0.1 TO 0.7 G / CM 3, PREFERABLY BETWEEN 0.25 AND 0.5 G / CM 3, AND A NUMBER OF CELLS HIGHER THAN BETWEEN 300 AND 3000 CELLS PER MM 3, PREFERABLY BETWEEN 800 AND 2500 CELLS PER MM 3. THE REVE STIMIENTO OF THE INVENTION CAN BE STRETCHED WITH A HIGH STRETCH RATIO (EX. 1.5) AND EXPAND TO FORM WITH THE RECEPTACLES EVEN IF THEY HAVE DIFFICULT SHAPES, SO THERE ARE NO STRETCHING PROBLEMS AND THE PRODUCED RECEPTACLES PRESENT A HOMOGENOUS OPACITY.