Thermal insulating sheet for use e.g. in sunblinds, sunshades and greenhouse shading has a coating with high solar reflection and high thermal emission on one side and a coating with low thermal emission on the other

摘要

Thermal insulating sheet comprising a base coated on one side with material showing high reflectivity for solar radiation in the wavelength range 0.25-2.5 microns plus high emissivity in the thermal infrared range (at least 5-50 microns) and on the other side with material showing an emissivity of less than 80% in the thermal IR (at least 5-25 microns). A thermal insulation element in the form of sheet material comprising a base fabric coated on one side with material (A) which reflects at least 60 (preferably 70) % of solar radiation in the range 0.25-2.5 microns but shows an emissivity of more than 80 (at least more than 70) % in the thermal infrared range (2.5-100, or at least 5-50 microns) and on the other side with material (B) showing an emissivity of less than 80 (preferably less than 70) % in the range 2.5-50 (at least 5-25) microns