On 01/01/2021 08:47, Ian Jackson wrote:
In message , Martin Brown
writes


The one they have a big problem with is black supermarket cook chill
plastic trays which are unclassifiable by the present sorting technology.

To overcome the 'black plastic' problem, Waitrose have changed their own
brands to light grey.





There's also now near-IR detectable black plastic packaging which can be
detected and sorted in the same way as others.

--
Robin
reply-to address is (intended to be) valid