PVC outer sleeves

[Vinny]

polyester is the most inert of the three, it can generate static electricity which attracts dust and is very expensive. Polypropylene is a stiff, high clarity, and chemically stable plastic. Polyethylene is also chemically stable and although transparent in its low density form, is not as clear as polypropylene

Another non-chemist - every word of that is incorrect.
At the most basic level, polyester is exactly that - an ester, so has poor resistance to alkalis and acids - they hydrolyse it. ALL materials can generate static if sufficiently far apart in the triboelectric series.

polyvinyl chloride are not recommended for archival storage. This plastic, often referred to as "vinyl" is not as stable as some other plastics. It can contain volatile plasticizers and emit damaging hydrochloric acid as it deteriorates.

Well,at least the first eight words were correct. ALL PVC film DOES contain plasticisers. It is far more "stable" (whatever that means withopiyt any kind of reference, I don't really understand) than polyester. Generation of hydrogen chloride? Compared to the hassles of plasticiser migration? Totally irrelevant, unless you have a fire.

 

[paulfromcamden]

Actually the inner is a definite possibility as it arrived in a conspicuously new replacement paper inner...

I'm not too upset as it wasn't an expensive purchase but it's a bit frustrating.