METHOD FOR PRODUCING PRECIOUS MATERIAL FOR ORNAMENTAL ARTICLES AND PRECIOUS MATERIAL FOR ORNAMENTAL ARTICLES WHICH CAN BE OBTAINED IN PARTICULAR BY MEANS OF THIS METHOD

摘要

Method for producing a precious material for ornamental articles, which envisages introducing, into the plasticization chamber of an extruder at a temperature of between 120 and 220° C., an amount of a Polymer composition and an amount of a metallic powder formed with one or more precious metals having particles with an average size of less than 0.5 micron in order to achieve thorough mixing between the amount of polymer composition in the liquid state and the amount of metallic powder by means of one or more screws provided with mixing segments; and then an extrusion and cutting step in order to obtain an intermediate product with a precious metal content to be treated during a subsequent forming step aimed at obtaining an ornamental article in the desired form.