Faster to decompose
The papers with the highest cellulose and lowest lignin content are computer paper, envelopes (in the case of window envelopes it may be necessary to remove the windows [see below] corrugated cardboard, writing and drawing
paper, pages torn from telephone directories (some still exist) and instruction leaflets/ sheets.
Slower to decompose
The slower decomposing, higher lignin group includes cereal packets, printed cards (avoid glitter –
see Christmas ), newspapers and cardboard egg cartons (good for trapping air in the bin).
Glossy leaflets and magazines are best recycled.
Wrapping paper should be subjected to the scrunch test before
deciding whether to compost or recycle
Windows Envelopes. Some of the windows are made from industrial compostable PLA while others are made from glassine (a recyclable paper product), but many are polystyrene, polypropylene, polyester, acetate
or plastic. Unfortunately, the householder cannot always tell the difference as not all envelopes are printed with content information so it is best to assume that the window will not decompose when composted. But it is not important the window
can be removed before the envelope is put in the bin or it can be picked out at the end of the composting process if it has not decomposed. After all most composters will be used to removing the remains of parcel tape that has somehow managed to get
into the bin or wormery unseen on corrugated cardboard.
Envelopes : The
EMA Guide to Envelopes & Mailings [PDF]