Glass Bottles and Jars
Reusable bottles are designed to be repeatedly returned to the manufacturer, cleaned and then refilled. These bottles have to be stronger and heavier to allow for multi-use - increasing production and transport costs. The success of any re-use scheme is dependent upon the efficiency of the collection and return system. In the UK traditional door to door milk deliveries which use returnable glass bottles have faced strong competition from supermarkets and other retail outlets.
Recycling bottles and Jars
Glass recycling involves the collection of empty glass bottles and jars, crushing them into cullet which is melted in a glass manufacturing furnace. The main barrier to recycling is a shortage of brown and white cullet. There is a large imbalance between predominantly white flint (clear) and amber glass production in the UK, and the high proportion of green glass from imported wine and beer bottles. Reducing weight of bottles and jars reduces quantity of waste arising.