"packages must have sufficient mechanical strength to protect the contents; construction material must not contain chemicals, which would transfer to the produce; package must meet handling and marketing in terms of weight, size and shape; packages should allow rapid coding of contents; security of the package or its ease of opening and closing might be important in some marketing situations; package should identify its contents; it must be required to aid retail presentation; package might need to be designed for ease of disposal, reuse or recycling; cost of the package should be as less as possible."
Source: dawn.com
