| 摘要 |
<p>Waste plastics containing solid plastics, slice plastics and foamed plastics are supplied into an annular die of a plastic extrusion device. The waste plastics are half-melted or melted and extruded from die holes to the annular die outer peripheral surface. The extruded plastic moldings are cut off or scraped off from the annular die outer peripheral surface. Each molded lump has a melt-solidified surface, a strength capable of reaching a preset area in a furnace raceway when blown into the furnace, and a grain size capable of providing velocities higher than a critical velocity.</p> |
