Patent ID: 8722145

Claim:
A method for increasing the thermal protective performance (TPP) of a thermally protective laminate compared to the laminate without an active insulation, said method comprising: forming an active insulation on a first convective barrier by applying a polymer resin-expandable graphite mixture discontinuously to a surface of the first convective barrier in an amount of less than about 140 gsm, positioning a flame resistant, thermally stable textile on said first convective barrier on a side opposing said polymer resin-expandable graphite mixture to form a thermally protective laminate, and positioning a second convective barrier on said polymer resin-expandable graphite mixture opposing said first convective barrier such that said polymer resin-expandable graphite mixture is sandwiched between said first and second convective barriers, wherein the thermal protective performance is increased by at least 2.0 cal/cm 2 per approximately 35 gsm of said polymer resin-expandable graphite mixture.