Fiberglass Needled Felt

There are countless small irregular array micropore in Fiberglass needled felt.  The micropore exists  a lot of immobile air molecules, when the heat flow through the glass fiber wool, air molecules resist the heat flow, So in the conduction process, increase the heat attenuation. If composited aluminum foil on surface, can prevent the glass fibers from sheding, also can use reflection of aluminum foil to reduce the convection and radiation of heat flow, so as to achieve better insulation effect.