Talking milk carton / 2.00 Packaging

The shelf life of milk is usually short.Drinking deteriorated milk may lead to people’s diarrhea and even poisoning.However,milk’s deterioration is hard to detect. There is a piece of thin plastic on the top of this improved milk carton. Milk will give off a kind of gas when goes bad.The plastic will be inflated consequently and let people detect the change of milk the first time.There is no need to worry the plastic may break during trnsportation since it is plecedin an inner part.