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The JAW belt heater is most suitable
to be fixed on the external of feeding cylinder of the plastic injector
serving as cylindrical heater for conductive heating. This heater
used quality mica as base material, the mica has small thermal absorption
characteristic and quick response to temperature, with the feature
of shortening the temperature rise time. The basic structure is
winding the quality nickel chromium wire evenly on the mica sheet,
and then sandwich with mica on top and bottom for insulation and
laminated by steel plate or stainless steel externally and then
bend in cylindrical formation.
The single sheet type with one
division on the heater, and double sheet type with two division,
the standard type employs tying structure by tie, the power terminal
is screw stud as standard and may by supplied as lead type under
request, but the mechanical strength is not durable due to this
structure.
The JAW belt type heater possess smooth surface and
elasticity, but correct size should be selected in order to ensure
the high thermal conductivity of the heating substance. When mounted
on the feeding cylinder, the ID of the heater should contact closely,
if failed to do so and there is gap existed, the surface will exceed
the allowable temperature due to poor thermal conductivity, this overheated
portion will extend continuously and affect the service life.
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