the published application and layer 22 of the present application corresponding to layer 4 of the published application sheeting 12 of the present invention can be made in the manner that metallized heat resistant material 6 is made in the published application the total thickness of the sheeting 12 of the present invention can be for example 0 1 1 5 mm preferably 0 3 1 3 mm and more preferably 0 8 1 0 mm the optical density is preferably greater than 2 7 more preferably greater than 3 0 even more preferably greater than 3 5 and most preferably greater than 4 0 the emissivity is preferably less than 0 06 more preferably less than 0 04 and even more preferably less than 0 03 the diameter of the perforations 16 is preferably around 0 1 1 5 mm more preferably around 0 3 0 7 mm and even more preferably around 0 4 0 6 mm the diameter can be for example around 0 5 mm the spacing 17 between perforations 16 can be 1 16 u2033 1 5 u2033 0 16 3 8 cm preferably u215b u2033 1 0 u2033 0 32 2 5 cm more preferably 3.