Vermiculite is the basic material for pumicon. This light,
incombustible insulation grain is exfoliated at high
temperatures (about 900ºC) under controlled conditions.
The product is mixed with various inorganic binding agents,
pressed into the required shape and size and ceramically
bonded in a furnace. This mica-like fire-resistant, acoustic and
thermally insulating granular material is chemically neutral,
does not contain asbestos or other fibres and is entirely