Normal roll size 1.0m W* 40m L Apparent Density 123 KG/ M3 Reflectivity 96-97 % Tensile strength ( MD) 0.77 MPa Tensile strength ( TD) 1.43 MPa Thermal Insulation material, XPE foam insulation material, Foam foil insulation material This item consists of AL / PET / XPE / PET / AL ( H: 2.5MM) etc multi-layers of obstruction material. It is an environment friendly product which has good heat preservation and insulation properties. The outer layer of PET provides excellent abrading and tears resistance. The middle layer of AL / XPE shows strong ability in barrier of moisture and oxygen, reduction and insulation of sound. The middle layer also has the advantages like reflecting light and heat and stopping the penetration of ultraviolet radiation.