Open sleeve mostly recycled for wrappers (9)
I believe the answer is:
envelopes
'wrappers' is the definition.
(envelope is a kind of wrapper)
'open sleeve mostly recycled' is the wordplay.
'mostly' means to remove the last letter.
'recycled' indicates anagramming the letters.
'open'+'sleeve'='opensleeve'
'opensleeve' with its final letter taken away is 'opensleev'.
'opensleev' anagrammed gives 'ENVELOPES'.
'for' is the link.
(Other definitions for envelopes that I've seen before include "gasbags" , "Wrappers, paper containers" , "Seven lope over to the paper containers" .)