Release Coatings

[joeprocess]

Armoloy XADC, Nibore, Nano-Mold Coating, other... What is your best choice for mold release for a PP part.

Part has an undercut that I was hoping to push off without rolling the edge. Mold Release spray works for 3-5 shots so I know I'm close.

[JayDub]

I haven't worked much with PP, but the best over-all release coating I've worked with is nickel-teflon. Poly-Ond is the version I'm most familiar with, but there seem to be all kinds of companies offering it these days.

[pjhall]

I'm a fan of the Nibore. I've tried the two part nano-coating from pcs, but I've never seen conclusive results.

[Valentin Leung]

We haven't found coating that would work for our usage, but we used a slipping agent (crodamide ER) in the material used at a very low percentage, our original objective was to get the parts slippery to reduce friction between PP parts , but we saw that it did helped the ejection too.
How bad is your undercut? How far away is the ejector pin/stripper plate off of it?

[joeprocess]

Thank you all. I have decided to go with Nyflon 25 from Armoloy. It is a nickel PTFE coating similar to nibore.

[brentb]

I haven't worked much with PP, but the best over-all release coating I've worked with is nickel-teflon. Poly-Ond is the version I'm most familiar with, but there seem to be all kinds of companies offering it these days.

Agree with J Dub for PP and PE molding!

KOM brent

[joeprocess]

It is a 0.010" undercut around the entire inside of the part. Using a stripper plate for ejection.

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[Pilot]

The coatings works quite good. But is here one point. In case, that you have a coating on pattern (desene) and this is damaged (scratch), you can remove the coating from affected area and repair the desene. But very often this point without coating is visible and tool has to be recoated. The costs per middle size tool 800x800 are +/- 5000 EUR (german price).