On Sat, 30 Sep 2017 19:22:29 -0700, Jeff Liebermann
wrote:

There are naming standards for chemicals and compounds which I believe
includes plastics.

Polyethylene isn't the only plastic with some naming confusion. See
table 2:
https://books.google.com/books?id=wmohBQAAQBAJ&pg=PR26


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Jeff Liebermann
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