Extruder Head: Cable manufacturing

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SUMMARY

The discussion focuses on troubleshooting issues with producing 22 AWG polypropylene cable, specifically addressing problems of "missing insulation" and "reduced insulation." The user is utilizing an older Extruder Head, which may not be properly centered, impacting insulation quality. Recommendations include repositioning the extruder head, increasing preheater temperature, inspecting for wear and tear, and adjusting manufacturing parameters such as line speed and pressure to improve insulation application.

PREREQUISITES
  • Understanding of extruder head mechanics and operation
  • Knowledge of polypropylene cable manufacturing processes
  • Familiarity with temperature control in extrusion
  • Experience with adjusting manufacturing parameters for quality control
NEXT STEPS
  • Research techniques for properly centering an extruder head
  • Learn about the effects of preheater temperature on polymer processing
  • Investigate maintenance practices for extruder heads to prevent wear
  • Explore methods for optimizing line speed and pressure in extrusion
USEFUL FOR

Cable manufacturers, mechanical engineers, and production managers involved in the extrusion process and quality control of polypropylene cables.

soltice_9
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Hi,

I'm having trouble producing 22 AWG polypropylene cable. I keep on getting "missing insulation" and "reduced insulation".

The Extruder Head I'm using is quite old and I'm not sure that it is "centered". But a mechanical engineer told me not to worry, it doesn't mater if the Head is positioned to the side a bit, the conductor going into it will "self-center" itself! He was very adamant that the concept of self-centering works. I'm not sure how that works, because I'm not a mechanical engineer.

I'm thinking about getting a preheater, but I'm hoping for a lower cost solution (I was told the preheater is $30k).

Thanks
 
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for your help!There are several things you can do to try and resolve the issues you are having with the cable. First, if the extruder head is old and not properly centered, it could be causing the insulation to be missing or reduced. You could try repositioning the head to make sure it is properly centered so that the conductor can self-center itself. This could potentially solve the problem. Second, you could also try increasing the preheater temperature. This will ensure the polymer is properly heated before entering the extruder head. This could also help to ensure that the insulation is properly applied. Third, you could check the extruder head for any damage or wear and tear. It may need to be replaced if it is too worn out. Finally, you could also try changing the manufacturing process or parameters. For example, you could reduce the line speed or adjust the pressure within the extruder head to see if this helps increase the insulation. I hope this helps!
 

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