Patent ID: 8523331

Claim:
A material jet system, comprising: a container for molten jet material to be ejected; a heater for melting and/or keeping molten said jet material; a jetting unit which is arranged to form and jet droplets of said jet material; a supply unit which is arranged for providing an uninterrupted supply of said jet material, said jet material comprising a metal in solid form, said supply unit including a driver under control of a controller for feeding said metal in solid form towards said container; a sealing member for sealing the material in solid form, the sealing member being disposed to function as a seal between the supply unit and the metal in solid form as the driver feeds the metal in solid form towards the container for providing a sealed environment downstream of said sealing member for keeping the molten jet material including a heat insulating fluid, added to the container, under controlled pressure while providing said material in solid form; and a pressure control system comprising a source of said heat insulating fluid to control pressure in said container.