milk being supplied is glass bottles, later is plastic bags and now is tetra pack and through vending machines give reason?
Over the years there has been a gradual change in the mode of packaging for different products. For instance, selling of milk,first in glass bottles,then in packets ,then tetra packs and vending machines. Such innovations in packaging are done to reduce costs or to improve the goodwill by innovating the mode of packaging. For example, the empty tetra packs can be recycled and thereby, helps in reducing the cost as well as makes it environment friendly. Such innovations also helps in making the product more consumer friendly. For instance, tetra pack keeps the milk safe for several weeks.