the side walls adjacent a vertically reciprocable platform are moved towards each other to compress compressible products , such as kitchen paper towels , toliet paper and the like , for introducing them into a plastic bab upon vertical movement of the platform . the side walls are coupled through cam follower rollers to inclined guide tracks on guide track elements , and slidably coupled to move with the platform on a guide rod . the angle of inclination of the guide tracks is adjustable , as well as the separation of the guide tracks from each other , so that the degree of compression , as well as the size of the compressed package , can be readily controlled .