Thermal Insulation
Safety Doors must provide thermal insulation between its two way sides. Heat flows towards high temperature to low temperature by its nature and flowing occurs to a maximum heat at the least resistance on the path. A heat gradient apears from the side of high tempeature region to low temperture region. Thermal insulation, secures the heat gradient by reducing the heat flow from the heat gradient. Insulation Mateials are usefull to stop the heat transfer from outside to inside as same from inside to outside. The insulation levels of the insulation materials are differs from one to another. So the ones under the level 0,065W/mK are actually called really Insulators.
