What composes the thermal layer?

What composes the thermal layer?

• A. Glide Ice PBI G2 with 60% Kevlar and 40% NOMEX on the surface and PBI/NOMEX blend non-woven apertured spunlace batting
• B. Cotton fabric with synthetic overlay
• C. Kevlar shell only
• D. NOMEX shell with foam padding

Answer: (A)

Heat protection in a firefighter’s garment comes from a layered approach: a durable, flame-resistant surface plus an insulating core that slows heat transfer. The best description of the thermal layer matches a combination where the outer surface fabric provides flame resistance and abrasion resistance, while the inner nonwoven battings provide the insulating barrier. Glide Ice PBI G2 with 60% Kevlar and 40% NOMEX serves as a robust, heat-resistant surface, and the PBI/NOMEX blend nonwoven apertured spunlace batting acts as the insulating core. Together, they form a cohesive thermal layer that limits heat flux to the wearer. Cotton with a synthetic overlay wouldn’t offer the necessary flame resistance or durability. A Kevlar shell alone lacks insulation, and a NOMEX shell with foam padding describes a different structural setup that doesn’t specify the same insulated core in the thermal layer.

Heat protection in a firefighter’s garment comes from a layered approach: a durable, flame-resistant surface plus an insulating core that slows heat transfer. The best description of the thermal layer matches a combination where the outer surface fabric provides flame resistance and abrasion resistance, while the inner nonwoven battings provide the insulating barrier. Glide Ice PBI G2 with 60% Kevlar and 40% NOMEX serves as a robust, heat-resistant surface, and the PBI/NOMEX blend nonwoven apertured spunlace batting acts as the insulating core. Together, they form a cohesive thermal layer that limits heat flux to the wearer.

Cotton with a synthetic overlay wouldn’t offer the necessary flame resistance or durability. A Kevlar shell alone lacks insulation, and a NOMEX shell with foam padding describes a different structural setup that doesn’t specify the same insulated core in the thermal layer.