Cartons for sandwiches or like foodstuff

A carton for a diagonally cut sandwich or like foodstuff formed from a blank of card having a heat sealable coating on one surface and having triangular end walls connected by rectangular side walls to form a triangular prism-shaped container such that the surface having the heat sealable coating is on the inside of the container, one side wall of the container being hinged to another of said walls of the container to provide an opening for insertion/removal of foodstuff and to form a lid for closing the opening, the remaining edges of the opening of the container have out-turned flanges and the periphery of the lid overlying the out-turned flanges encircling the opening when the lid is in the closed position, whereby the periphery of the inside of the lid can be bonded to the flanges to seal the contents of the carton by applying heat, wherein the lid is hinged to the base of one of the triangular end walls, and the periphery of the lid is bonded to the out-turned flanges of the adjacent side walls and opposite end wall of the container.