Kistler Instrumente GmbH

World’ First: Kistler Presents Unique Combined Pressure and Temperature Sensor with Front Diameter of Just 1 mm for Injection Molding

With the new combined pressure and temperature sensor Type 6188A… Kistler establishes
another milestone in the miniaturization of sensors for quality assurance in the injection
molding of plastics. This completely newly developed combined sensor with its front
diameter of just 1 mm, measures cavity pressure and the contact temperature at the same
point in the mold. Kistler will launch its new highlight on Stand 10F04 in Hall 10 at K 2010,
the world-leading International Trade Fair for Plastics and Rubber to be held from 27
October to 3 November 2010 in Düsseldorf.
As in the established combined pressure and temperature sensors Type 6189A… with a
front diameter of 2,5 mm and Type 6190CA… with 4 mm, in the new Type 6188A… the
wires of the type K thermocouple are threaded through the pressure measuring elements
directly to the front of the sensor. There they measure the direct contact temperature of the
melt and respond as quickly as possible to changes in temperature.
Target applications for the combined sensor focus on medical, electrical and precision
molding. It opens up new possibilities for injection molders in process monitoring and quality
assurance. The documentation of mold cavity pressure and contact temperature provides
end users of injection molded plastic products with reliable reports on the stability of the
manufacturing process and the quality of the molded products.
The cavity pressure curve is the most informative characteristic for monitoring the process
and evaluating the quality of the injection molded part. It is considered to represent the
“fingerprint” of molding. The contact temperature provides additional information about
the process and for optimizing and monitoring injection molding.