Conveying continuously advanced material through heat treatment apparatus

摘要

In heat treatment apparatus for continuously advanced material, for example for extruded strip to be vulcanised, a transporting element is provided comprising a plurality of rotatably mounted cylindrical rollers (7) arranged one behind the other between two mutually parallel chains, each roller being rotated by friction forces on at least one stationary strip (12) as it is carried along by the chains. The rollers are preferably of metal or ceramic oxide. The provision of rotatable rollers does not cause defects on the engaging surface of the advanced material (20).