VACCUM EXTRUSION

The blend is then fed into an extruder. The extruder removes air from the grinded clay with a vacuum, preventing cracks and other defects. After the clay is compressed, the material is forced out of the chamber as a specially shaped die orifice.

The helical screw in the extruder section pushes the material out continuously. A die (mouth piece) is placed at the outlet of the machine through which clay column of brick shape comes out. This machine is fully mild steel fabricated and fitted with oil immersed built in gearbox and heavy duty ball and spherical roller bearing. Then the clay is formed into shape of the die, where the column can be cut into desired length by stiff wires which is attached the automated cutting table.