FLAME RETARDING AND FIRE BLOCKING CARBONACEOUS FIBER STRUCTURES AND METHODS OF MANUFACTURE

摘要

A flame retarding and fire blocking structure (20) comprising a polymeric material (24) selected from polymeric binders or natural or synthetic polymeric fibres, blended with non-flammable, substantially permanently or irreversibly heat set carbonaceous fibres (23) having a carbon content greater than 65 per cent and an LOI value greater than 40, wherein said carbonaceous fibres are present in the blend in an amount of at least 7.5 per cent. A plastic film (22) with embossments (21) can be provided on its upper surface. On the other side of the material (24) there may be provided a stiffening member (25) that can be covered by a layer of carbonaceous fibres (26) and a metal foil (28).