Sheet material for insulation panels used in building construction, includes vapor phase coated metallic screening against high frequency electromagnetic radiation

摘要

The material a continuous metallic conductive and for electromagnetic radiation in the frequency band 40 MHz to 4 GHz a screening attenuation in the range 75-100% effecting flat structure shows. The sheet material is made from glass fiber fleece (2), preferably of 40-50 g/m2> weight. It is coated by vaporization with an essentially closed metallic layer (3), its thickness being from 0.001 mu m to 10 mu m. The metal comprises aluminum and/or zinc and/or copper and/or silver.