nanosized materials offer useful solutions to improve packaging particularly the barrier. when incorporated into or on the package,blends of clay and biopolymers or aluminium or silicon oxides metallized films act as efficient barriers to certain gases like oxygen . some of these barriers are only 40-60 nm thick. with the use of nanoparticles,bottles and packaging can be made lighter and stronger with better thermal performance and less gas absorption . these properties can extent the shelf life of products,as well as lower the time of transportation costs involved in shipping food.