| 摘要 |
A system is disclosed for extruding, drawing, vacuum molding or processing, or the like hot processing of plastomers or elastomers, which can conveniently utilize the hot air from the cooling process of its heated component parts. The system makes use, to heat the extruder cylinder, of ventilated electric thermal units wherein ventilation is performed in closed circuit fashion. In particular, arrangements are made to convey the hot air from the cited electric thermal units, through specially provided ducting, to areas of the system where application of heat is required. |
