FLAME BLOCKING SYSTEM AND SPIRAL TUBE FOR BLOCKING FLAME CAPABLE OF EFFECTIVELY BLOCKING FLAME AND SMOKE BY OPENING/CLOSING THE OPENING OF A PARTITIONING STRUCTURE IN TIMES OF FIRE

摘要

PURPOSE: A flame blocking system and a spiral tube for blocking flame are provided to completely shield the opening of a barrier since the volume of a spiral tube is expanded as temperature increases in times of fire.;CONSTITUTION: A spiral tube(100) for blocking flame comprises a fire-retardant foam sheet. The fire-retardant foam sheet comprises thermally expandable filler and binder resin. The fire-retardant foam sheet is rolled in a shape of a spiral tube. The thermally expandable filler is selected from a group of expandable graphite, mica, and vermiculite.;COPYRIGHT KIPO 2012