Patent ID: 8383528

Claim:
A method of reducing the percent burn of a garment in a 4-second Garment Flammability Test (4-second Pyroman exposure) by at least 10% comprising: a) providing a textile composite comprising: a meltable outer textile comprising meltable material; a thermally stable convective barrier comprising expanded polytetrafluoroethylene or polytetrafluoroethylene; and a heat reactive material between the meltable outer textile and the thermally stable convective barrier, wherein the heat reactive material comprises a polyurethane-expandable graphite mixture; b) constructing a garment with an outer surface of said garment comprising said outer textile; and c) with the outer surface of the outer textile oriented toward a flame, subjecting the garment to a 4-second Pyroman exposure test, wherein the percent body burn is decreased by at least 10 percentage points in the 4-second Pyroman exposure test compared to a garment constructed without the heat reactive material between the meltable outer textile and the thermally stable convective barrier.