Nonstick, low friction coating but No PTFE
Nonstick, low friction coating but No PTFE
(OP)
We are looking for an omniphobic, nonstick, low coefficient of friction coating for a kitchen device used for hand grinding relatively soft foods like herbs and spices. PTFE was our first choice but because this is being sold to the 'health conscious' market, it was eliminated as an option. (I know it's safe but "no PTFEs" is what they want!) We originally tested PTFE coatings against a variety of food products and the average static CoF was .30 which is what we are aiming for with a different coating
The device is used at room temperature, and the substrate is Al 7000 series. It must be FDA approved for food contact and cost is a consideration. There will be little or no abrasion in use. It should be not more than .002" thick. The parts are 2.5" diameter.
We would prefer to have the parts coated in China (where they are manufactured) by an American subsidiary if possible. Do any suggestions come to mind?
Thanks,
Rick
The device is used at room temperature, and the substrate is Al 7000 series. It must be FDA approved for food contact and cost is a consideration. There will be little or no abrasion in use. It should be not more than .002" thick. The parts are 2.5" diameter.
We would prefer to have the parts coated in China (where they are manufactured) by an American subsidiary if possible. Do any suggestions come to mind?
Thanks,
Rick





RE: Nonstick, low friction coating but No PTFE
Have you considered the ceramic coatings currently used for non-stick? I would be concerned about durability of something like PTFE in a grinding application; I think there will eventually be sufficient wear to remove the PTFE. We once had a thread on the fact that cotton thread could cut through SS rollers. I would have thought that you would need a hard material for grinding applications.
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RE: Nonstick, low friction coating but No PTFE
RE: Nonstick, low friction coating but No PTFE
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Nonstick, low friction coating but No PTFE
RE: Nonstick, low friction coating but No PTFE
TTFN

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RE: Nonstick, low friction coating but No PTFE
RE: Nonstick, low friction coating but No PTFE
Hard anodizing is an interesting idea. We gave it a thought early on but rejected it because of color constraints and I didn't think it would have the lubricity. Have you had any experience with it?
RE: Nonstick, low friction coating but No PTFE
This is where I read about it:
http://www.pfonline.com/articles/diamondyze-in-the...