Heat and flame shield

Abstract

A heat and fire resistant planar unitary shield formed of heat and flame resistant fibers and voluminous bulking fibers. The shield material has a heat and flame resistant zone with a majority of the heat and flame resistant fibers, and a voluminous bulking zone with a majority of the voluminous bulking fibers. The fibers are distributed through the shield material in an manner that the heat and flame resistant fibers collect closest to the outer surface of the shield with the heat and flame resistant zone, and the voluminous bulking fibers collect closest to the outer surface of the shield material with the voluminous bulking zone.

1 . A heat and flame unitary planar shield material comprising:
 a plurality of heat and flame resistant fibers and a plurality of bulking fibers,   the unitary planar shield material including
 a heat and flame resistant zone extending from a heat and flame resistant outer boundary to a heat and flame resistant inner boundary, and 
 a bulking zone extending from a bulking zone outer boundary to a bulking zone inner boundary adjacent to the heat and flame resistant inner boundary, 
   wherein the heat and flame resistant zone contains a portion of both the bulking fibers the heat and flame resistant fibers with a higher portion of heat and flame resistant fibers than bulking fibers, wherein the concentration of heat and flame resistant fibers is greater near the heat and flame resistant outer boundary than at the heat and flame resistant inner boundary, and   wherein the bulking zone contains a portion of both bulking fibers and the heat and flame resistant fibers with a higher portion of voluminous bulking fibers, wherein the concentration of bulking fibers is greater near the bulking zone outer boundary than at the bulking zone inner boundary.