| 摘要 |
<p>An apparatus for the continuous forming of plastic sheet from granular thermoplastic materials directly from granular thermoplastic material by plasticizing the granular material through a blender and an extruder, thence passing such material through a pair of roller dies to form a sheet of material that is fed directly to a pair of continuously moving cooperative conveyor belts where the sheet is vacuum formed therebetween, thence cut to size.</p> |
