This paper describes the use of fluidized solid particles as heating medium for rubber vulcanization, with emphasis on the continuous vulcanization of unsupported extrusions. The relevant features of fluid beds for this purpose—density, pressure and flow of gas, particle size, viscosity, heat transfer, chemical inertness—are considered. The construction and experience in the use of a horizontal trough and vertical column fluid bed are outlined. Attendant problems, notably porosity of the vulcanizate, are dealt with.

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Rubber Division, American Chemical Society, Inc.
1963
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