| 摘要 |
<p>A plasticizing screw (4) is used to feed raw material (rubber compound) in the cold state into a cylinder (2). The material is plasticized and warmed up by the screw (4). The cylinder (2) is constructed so that the raw material fed into the cylinder can by retraction of the piston flow through a non-return valve into the front of the piston. The piston then extrudes the material through a die. On leaving the die, the material is cut into blanks, using a cutting mechanism (11). Material in the cold state can be fed directly into the cylinder tanks to the plasticizing screw (4), which plasticizes and preheats the material. Volume control is achieved automatically in dependence with the advance of the piston (FIG. 1).</p> |
