HEAT AND FIRE PROTECTIVE ITEMS

摘要

A method and devices are described, in which a transformable fiber at a first crystal structure is shaped from its pre-determined configuration into a new shaped configuration. The new shaped configuration of the transformable fiber is inserted into a cavity of a heat and fire protective item. The new shaped configuration of the transformable fiber is heated to above its transformation temperature to a second crystal structure. The heating transforms the new shaped configuration to its pre-determined configuration, wherein the pre-determined configuration forms an air pocket within the heat and fire protective item. The transformable fiber is cooled below its transformation temperature to revert the transformable fiber back to the new shaped configuration at the first crystal structure.