Plastic article or earthenware shaping or treating: apparatus – Including means advancing continuous length work through...
Patent
1994-09-14
1996-08-06
Mackey, James P.
Plastic article or earthenware shaping or treating: apparatus
Including means advancing continuous length work through...
425143, 4251744, 4251748E, 425325, B28B 500
Patent
active
055428339
ABSTRACT:
An apparatus for continuously vulcanizing a rubber molding extruded from an extruder is disclosed in which a single or plural microwave heating apparatus is arranged within a heating bath. The microwave heating apparatus can generate internal heating of the rubber molding so that a surface temperature of the rubber molding can be held at a temperature substantially equal to the internal temperature of the rubber molding. Thus, uniform vulcanization of the rubber molding occurs. In addition, when both the microwave heating apparatus and an external heating source are arranged within the heating bath, an infrared ray radiator, arranged within the heating bath, radiates infra-red rays according to energy absorbed from the microwave heating apparatus and the external heating source. Thus overall heating efficiency can be increased. Furthermore, when single or plural temperature sensors are arranged within the heating bath so as to detect temperatures on particular portions of the rubber molding, an on-and-off control of the microwave heating apparatus is carried out so as to maintain the temperature of the rubber molding on the basis of a previously set temperature.
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Kautschuk and Gummi Kunststoffe, vol. 40, No. 11, Nov. 1987, pp. 1058-1066.
Shinohara Kibatsu
Watanabe Shozo
Kinugawa Rubber Industrial Co. Ltd.
Mackey James P.
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