Tire curing-Energy Management

Vulcanization is an energy-consuming process, even though the chemical
reaction is exothermic. The power consumption is necessary to convert rubber
from plastic to elastic state, to form the tire at the final shape and to initiate the
chemical reaction.
A few methods to reduce the power and material consumptions are shown
below
• Utilization of multi-mold presses, which can replace many BOM presses,
reducing this way metal consumption with over 60%, and power consumption
with 20-25%
• Vulcanization with high frequency electromagnetic radiation. The yield is 25-
30% versus 3-10% in the case of thermal energy.
• Vulcanization with radiation or accelerated particles.
• Manufacture of tires from liquid oligomers by injection in molds.


2-piece Tire Mould

Two piece mold comprises of an upper and a lower mold

Segmental Tire Moulds

The tendency is nowadays strongly towards the usage of the different
types of segmental moulds especially when using the modern hydraulic
curing presses because of following advantages
Better tires geometrically and according to force variations
Possibility to exchange individual segmental shoes / side plates of the
moulds when they get damaged without machining the whole mould
Better heat conduction to the mould because of the efficient circulation of
the heating agent inside the jacket of the container
Decreases the amount of scrap tires due to improper unloading especially
when curing densely siped winter tires with big amount of patterns on the
tread - less need to use mould releasing agents