Cosmetic Standard for Sheets of Extruded Plastic


El Capten

I am looking for a generic standard that I could apply to sheets of extruded plastic - specifically, a limit on the size and number of black specks per sheet ( expressed as number and / or size per sq foot).
I'm trying to develop an in-house standard, but am having writers block and hope that seeing such a specification or standard will start me going in the right direction.


Quite Involved in Discussions
What is the end application? What are the sheets of plastics going to be used for? Some customers may be more picky than others if the end application is medical.

The Tappi T654 Method is a standard that is used widely in the medical plastics industry to measure deformities from 0.02 to 5.00 mm2.

How large is the contaminates?
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