it is generally estimated that 3050 of all petroleum based plastics used for packaging.the use of byproducts from the forest and paperindustry in food packaging is lowcost and can act as an alternative to petroleum resources.biodegradable plastic food packaging, made using up to 25 wood fibres.one product being tested is made using biodegradable polyactic acid pla and 25 wood fibres. tests are ongoing to assess the migration qualities and safety of the material for use with food.the project is also looking to develop an ecofriendly fish crate using polyurethane made with wood fibres and tall oil &ndash tree oil obtained as a byproduct of paper production.  
