(57) This invention relates to an electric heater for industrial processing machinery
in general.
A currently much felt problem in the manufacture of electric heaters for industrial
processing machines is that it is not always possible to achieve a uniform and accurate
distribution of temperature at the region to be heated.
The above technical problem is solved hereby with an electric heater (1) for industrial
processing machinery in general, which comprises a supporting housing (2,3) adapted
for association with a region of an industrial processing machine to be heated. The
housing carries, on its side facing the region to be heated, a plurality of electric
resistors, preferably in the form of electric wire coils inserted in quartz tubes
(20), adapted to deliver heat mainly by radiation to said region to be heated.
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