Fire Retardant (FR) Inherent FR fabrics are made of fibres in which the FR properties are naturally part of the polymer backbone and can never be worn away or washed out.
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Treated FR fabrics are created by applying a flame-retardant chemical finish to a fabric or by adding a chemical treatment to the fibres before they are woven or knitted into the fabric
Pros and Cons of inherent FR fabrics
FR protection mechanism: The primary advantage of inherent FR fabrics is the high level of protection against thermal hazards. Inherent FR fabrics will not ignite in normal oxygen content levels, or they will char as their protection mechanism. Inherent FR fabrics consistently have higher Thermal Protective Performance (TPP) scores than treated FR fabrics. The TPP rating is a measurement of a protective garment’s thermal insulation performance against convective and radiant heat exposure. A garment’s TPP score is simply two times the number of seconds it takes for a second-degree burn to occur when exposed to a 2.0 Cal/cm2 flame and radiant heat source. The higher the TPP rating, the higher the level of protection
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