Hot-Plate Welding PP with Teflon coating (500 F) vs Chromium coating (725 F)

On the left, a Teflon sheet is used to keep the PP material from sticking to the heated tooling. The tool is 500 F (260 C) hot to keep the Teflon from breaking down. On the right, a Chromium-based coating is used to keep the PP from sticking. This tool is 725 F (385 C) hot because this coating can handle much higher temperatures.

As you can see, the cycle time is much faster using Chromium. The parts were tested using a pressurized burst test and the results were nearly the same and above the requirement.

Learn more about hot-plate welding at https://www.extolinc.com.

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