Welding PVC - Temperature Matters!

Plastic welding with one of Polyvance’s nitrogen plastic welders is the fastest, strongest way to repair damaged plastics. Polyvance machines offer precise temperature and flow control to accommodate the different melting points of all thermoplastics. It is important to weld at the proper temperature. Welding at a higher-than-recommended setting could compromise the strength of your plastic weld.
PVC is a good example of a heat-sensitive plastic. If you weld it at an excessively high temperature, you will scorch the plastic, even when welding with nitrogen gas.
This video shows the difference of the weld quality when welding PVC at the recommended temperature versus welding at a higher-than-recommended temperature. We also used a tension tester to test the strengths of the welds. The average peak load for samples welded at the recommended temperature was much higher than the average peak load for samples welded at the higher temperature.
To maximize the strength of your plastic welds, use the recommended welder settings provided by Polyvance. And remember, hotter is not always better!
Chapters:
Overview: 0:00
About thermoplastics: 0:31
Melting temperatures: 1:00
Welding PVC: 1:25
Tension testing: 1:52
⚠️ Important ⚠️
- Always wear proper safety gear while working!
- The length of this video is in no way representative of the actual time required to perform a complete repair and therefore should not be used for estimating purposes.
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🎵 Music Credits:
"Sage" by Slenderbeats
From the KZbin Audio Library
Narration:
Rob Rode

[@sealisland1]

Id like to see this done with PP. Whats the recommended temp for that?

[@lii1Il]

Yes I would love to see PP as well.

[@mikepruett1745]

i hope you guys reply very hard to get ahold of i have a 4 year old unit and been stuck with mclarens with "pc - abs black i dont have this in the supply in our kit

[@polyvance]

Hi Mike. You need the R20 welding rod - www.polyvance.com/PC-ABS/