Step | Operation | Duration (min) |
1 | Heating the cylinders surface to 70˚C | 1 |
2 | Plasticization of the natural rubber | 1 |
3 | Incorporation of the crumb (after spacing the cylinders) | 2 |
4 | Incorporation of the activators: ZnO + Stearic acid | 1 |
5 | Incorporation of the accelerators: TMTD | 1 |
6 | Incorporation of the Carbon blacks: N330 | 1 |
7 | Incorporation of the antioxydant: Vulkacit H/30 | 1 |
8 | Incorporation of the sulfur (after reducing the cylinder gap) | 2 |
9 | Drawing of the raw sample in slabs | 2 |