Page 298 - Handbook of Plastics Technologies

ELASTOMERS

4.90 CHAPTER 4

rubber that will be later used as components of built-up products such as tires. Textile fab-
ric for reinforcement can be embedded during the process. Calendering is a process for
producing sheets of uncured rubber (for later vulcanization), such as for roofing mem-
branes.
The uncured rubber stock is passed through a series of gaps of decreasing size made by
a stand of rotating rolls, and the final roll gap determines the sheet thickness (Fig. 4.31). A
variant of this is the use of a calendering process for the production of coated fabric for
such applications as carcass plies in tires (Fig. 4.32).

FIGURE 4.31 Calendering

FIGURE 4.32 Coating of fabric with rubber using a calendering process.

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