Plastics Extrusion Tubular Heaters

Plastics Extrusion Tubular HeaterThe customer was using ring type tubular heater assemblies to heat extrusion blown film exiting the extrusion die in order to prevent cool down of the plastic at the die exit.  Heater elements were slowly failing so customer needed to repair and replace several units on their film lines.  He reached out to Durex to determine if we could design / build these heater assemblies and if there were improvements we could make in order to extend heater lifetime.


Durex reverse engineered the existing heater assembly and saw several opportunities for improvement.  Modifications made include higher grade sheath material and optimized internal heater coil design to boost life time.  We also improved element spacing and support to minimize self-heating of elements.  We also strengthened the mechanical assembly and control / power enclosure to further enhance reliability.


Durex built and the customer installed several heater assemblies which have operated for several years with no failures and improved production line up time.

For the precise solution to your thermal challenge, contact us today at 866-712-5014.

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