| 摘要 |
An extruding apparatus for melting a waste synthetic resin and a pelletization system for a waste synthetic resin using the same are provided to allow facilitative dehydration and evaporation of water contained in the waste synthetic resin in a melting process. An extruding apparatus for melting a waste synthetic resin includes a driving unit(41); a transferring screw(10) which comprises a rod-like object(11) and a spiral object(13) having a pitch formed in a rotation direction of the rod-like object; a dehydrating screw(20) which comprises a rod-like object(21) shorter than that of the transferring screw and a spiral object(23) having a pitch formed in a rotation direction of the rod-like object and arranged in a form deviating from that of the transferring screw; a housing(30) for accommodating the transferring screw and the dehydrating screw, which has a front inlet(31A), a rear outlet(31B) and a pore(33) for drainage of water formed on a section of the dehydrating screw; and a heating unit(43) for melting the waste synthetic resin transferred by the transferring screw. In the apparatus, the rod-like objects have a different diameter by sections, and the spiral objects have a different pitch by sections. |
