| 摘要 |
A machine for the production of hollow bodies made of different materials, comprising: a feeding unit (2), through which plastic material in the solid state is introduced; a plastication unit comprising at least two rotating plastication screws (4), to transform the plastic material from the solid to the semisolid state, and at least two accumulation chambers (11) for the plasticated material in the semisolid state; at least one extrusion head (5), through which the plastic material in the semisolid state coming from the accumulation chambers (11) is coextruded to form hollow bodies or parisons; the plastication screws (4) being movable in the axial direction, so as to push the plastic material from the accumulation chambers (11) into the extrusion head (5). <IMAGE> |
