ABSTRACT

As shown in Chapter 4, the cure operation takes place in the mold where the rubber compound is heated to a temperature at which the reaction starts with a significant rate. But a drawback arises when the rubber, initially at room temperature, is placed in the slabs of the mold previously heated at the desired temperature, because it takes some time for the rubber to be heated to the mold temperature. Moreover, the mold may be so complex in size that it is not possible to introduce the rubber compound in a solid state. For these two reasons, the technique of injection molding is applied.