A ventilation grid and method of forming a ventilation grid by moulding

摘要

The invention relates to an intumescent composition containing a polymer binding agent, expandable graphite and at least one inorganic filler. The invention also relates to an intumescent moulded body which is produced by means of injection moulding of said type of composition, in particular a ventilation grid for preventing the passage of fire and smoke in the event of a fire from one room into another.