Material refill unit, material refill port and system with a material refill unit and a refill port

摘要

A material replenishing unit (10; 210) adapted for connection to a material refilling port (12) of a device (3) for producing three-dimensional workpieces by impinging raw material powder layers with electromagnetic radiation or particle radiation for their supply of raw material powder, comprising: - a bag (16), the raw material powder contains; and - a connector (18) attached to the bag (16) for connection to the material refill port (12); wherein the bag (16) is adapted to be opened upon connection of the connecting element (18) to the material refilling port (12) in a region of the connecting element (18).