METHOD OF HEATING RAW TAPE FOR ITS CONTINUOUS VOLCANIZATION IN CALENDER Russian patent published in 2017 - IPC B29C35/08 B29C47/00 F26B13/00 

FIELD: technological processes.

SUBSTANCE: method for vulcanizing a raw rubber tape involves continuous vulcanization on a horizontally arranged calender. The outer surface of the calender is heated by infrared radiation, maintaining the temperature of 250°C, and directing it directly to the surface between the pressure cylinders, placing the three-phase infrared heater (IRH) between them and continuously measuring the surface temperature of the calender with a pyrometer at the top of its end. Before vulcanization, the raw tape is heated by infrared radiation with a single-phase IRH, maintaining the temperature of 250°C, directing both flat surfaces of the tape and continuously measuring the temperature of the flat surface of the raw tape contacting the heated calender surface, wherein the three-phase IRH is made of linear radiators of limited length in reflectors that are mounted along the circumference of the calender without gaps, and the single-phase IRH is made of lamps FF-500 that are placed without gaps between themselves over the tape and under the tape with a uniform gap with respect to it. Each single-phase and three-phase IRH are electrically connected to their controlled output of the APHT, and their control inputs are connected to the outputs of the corresponding pyrometers, which are fixedly placed in the first quarter on top of the end face thickness of the calender cylindrical surface.

EFFECT: reducing the energy consumption of heating and increasing the productivity of the vulcanization process.

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