Most plastic carrier bags are made from polyethylene, a kind of plastic. Polyethylene, or polythene as it is known in the UK comes in different forms. The top three used in bag manufacture are
High Density PolyEthylene – HDPE- is used to make supermarket type carrier bags.
Low Density PolyEthylene – LDPE- used to make soft clear bags like the ones used for packing of vegetables, toys and clothes.
Biaxially Oriented polypropylene -BOPP- is the crisp crystal clear stuff used for greeting cards, the plastic wrapping round boxes of tea etc and food packs like pasta.
Lots more on the various types of plastic and what they are used to make can be found HERE
The bag above has been knitted from old plastic carrier bags – you can find the pattern here
- Plastic bags are GREENER…. (plasticisrubbish.wordpress.com)