extrusion:e technique that procreate objects with cross section defined and fixed, such as metals, ceramics, concrete, polymers.
of the 40 lat.extrudere; throw out ) metal.procedimiento to give shape, cold or hot, metal profiles through the passage of metal through a row. polim. plastics molding process... Larousse, 2000 pag.2189 book 6.
All form cambi process called extrusion.Taken from the book of industrial manufacturing.