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Cast-Ins (Heating & Air-Cooled Shroud Systems)

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Four Turnkey State-of-the Art Systems to Improve
Operating Efficiencies in Plastic Extrusion Equipment

Selection Guide - Plastic Extruder Heating and Cooling Shroud Design Systems
For full details click on the links below Shroud Style Construction Recommended Heater Types Barrel Diameter Range Zone Length Range
Min.          Max.  Min.          Max.


Cool TO-THE Touch

Cool to the Touch (PDF)

 Inner Stainless Steel
Solid Layer;
Outer Stainless Steel
Perforated Layer



 Tempco Finned Cast
Aluminum Heaters,
Vented Ceramic Band
or Maxiband Heaters
 3"          16"
76mm     406mm 		5"          30-1/2"
127mm   775mm


Multi-Versal

Multi-Versal (PDF)

 Single
Stainless Steel
 Solid Layer 		Tempco Finned Cast
Aluminum Heaters,
Vented Ceramic Band
or Maxiband Heaters
 3"          16"
76mm     406mm		 3-3/4"      30-1/2"
95mm     775mm


Polar Cast

Polar Cast (PDF)

 Inner Stainless Steel
Solid Layer;
Outer Cast Aluminum
Vented Layer 		Tempco Finned Cast
Aluminum Heaters 		4"          16"
102mm   406mm		 8"          30-1/2"
203mm   775mm


Arctic Cast

Arctic Cast (PDF)

 Single
Cast Aluminum
Solid Layer
Tempco Finned Cast
Aluminum Heaters 		4"          16"
102mm   406mm		 6-1/2"      30-1/2"
165mm   775mm

Air-Cooled Shroud Accessories


Forced-Air Blowers

 

Air Blowers

 
Air-Cooled Fin Heaters

Heating and Air-Cooling Plastic Extruder Barrels

Up to now Liquid Cooling Cast-In Band Heaters have been the predominant method of controlling the melt temperature of extrusion barrels. Although effective in removing heat from the extrusion process, there are a number of drawbacks that are primarily maintenance related. Extruders using liquid cooled Cast-In Heaters can be subject to unpredictable and untimely failures of the cooling tube assemblies, resulting in extremely costly downtime to the processor. Inherent maintenance problems include stress corrosion cracks, linear thermal expansion of the heater body, and clogging of the tubes due to accumulation of mineral deposits. Additionally, Liquid Cooled Cast-In Heaters require an expensive cooling tower or heat exchange system, extensive plumbing systems and labor for installation.

Tempco-designed air-cooled systems have evolved considerably and become more thermally efficient as a result of geometric changes and implementation of sophisticated shrouding and air flow techniques. Optimized direction and ducting of airflow, coupled with selection of the proper blower CFM, are important to ensuring that the air cooling technique removes the proper amount of heat from the extrusion barrel

Need Assistance Selecting a System? We Welcome Your Inquiries
 If you have a special application requiring a custom manufactured system or need assistance selecting one of our standard systems for a new or existing installation, consult Tempco with your requirements. We offer complete engineering services and support, working with you every step of the way, to ensure yourr satisfaction.