| 摘要 |
PCT No. PCT/AT93/00098 Sec. 371 Date Dec. 9, 1994 Sec. 102(e) Date Dec. 9, 1994 PCT Filed Jun. 8, 1993 PCT Pub. No. WO93/25312 PCT Pub. Date Dec. 23, 1993.An apparatus for plasticizing thermoplastic synthetic plastics material, in particular scrap material, comprises a plasticizing screw (18) bearingly supported within a housing (21), to which screw the synthetic plastics material to be plasticized is supplied through a feed opening (16). At this feed opening (16) a comminuting means in the form of two shafts (3, 4) disposed parallel to each other and parallel to the axis of the screw (18) is provided, each of the shafts (3, 4) being provided with a plurality of pinned-up disk-shaped comminuting tools (8). Between each two neighboring comminuting tools (8) a circular spacer disk (9) is disposed and stationary knives (11) engage into the gaps between adjoining comminuting tools (8), the flanks (15) of which knives extend tangentially with respect to the periphery (13) of the spacer disks (9). The two shafts (3, 4) are driven with different speeds and the knives constituted by the comminuting tools (8) comminute the synthetic plastics material and press it into the volutions of the screw (18). This results in a construction which is reliable in operation and comminutes the synthetic plastics material effectively. |
