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Bag Problems

August 14, 2008

In reply to Ollie Baird (Aug 7) and Julia Rinckes (Aug 11), so- called biodegradable plastic bags are made by adding an additive to LDPE to make it compostible, or by making film from PLA, again producing a product that will break down if composted. In either case, if these materials find their way in to material being recycled, they are a contaminant and jeopardise recycling efforts. If they go into a properly designed landfill, they – like onion skins or potato peel – will be mummified and still be there in 200 years. STEVE HODGSON

Lyttelton

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