@Gargron
Recently I bought a packet of sliced semi hard cheese.

Wrapped in plastic, laid on a plastic tray inside (why?), and in between the slices, a thin plastic film (wtf?). Puzzled, I looked for the recycling marks: PE - wrapper, PVC - tray, EVOH? Film, probably.

EVOH is difficult to make and expensive, usually not or only slowly biodegradable, difficult to recycle and "on the upside does not produce toxic or harmful by-products when properly incinerated".

Wasteful, did not buy it again.