Easily expandable, flexible paper popcorn package

ada-dbdbdacA flexible paper popcorn package in the form of an easily expandable bag includes a bottom wall, a top wall, first and second, pleated, side walls having pleats, and first and second non-venting ends. Spots of adhesive may be provided between the pleats and the top and bottom walls to prevent the formation of pockets adjacent the end. Couplers formed of adhesive are provided between the pleats and the top wall which seal apertures in the pleats which vent during microwave popping, puffing, or expanding of a food product held in the bag and which may predispose unfolding of the pleats adjacent the bottom wall including the susceptor.