a conveyor belt of medium - soft thick material is advanced , and a film of polymer material is laid thereon to advance therewith . a moldable material , usually a food material , is extruded onto the advancing base film . a portion - forming wheel having portion cavities around the periphery thereof is positioned with its portion cavities facing the conveyor belt . a cover film is fed onto the portion - forming wheel and is preferably drawn into the portion cavities . as the conveyor belt advances , the portion cavities cut the extrusion of moldable material into individual portions which are enclosed by the two films as the conveyor belt advances . the portion cavities have portion - cutting walls therebetween , and a ramped area around the cavity squeezes all of the moldable material into the portion cavities .