... fan-wall sealing,oiling, bottom punching,heating,rolling,rimming,rounding and tripping. Main technical parameter:Paper Bowl Sizes: 20,25,30, ... : Single side(one side) PE(polyethylene) film coated paperSuitable paper weight: 170--450 gsm (Recommend 200--350 gsm)Speed of ... by heater.Full automatic,Easy changing molds produce different sizes paper bowls,Easy operating by operator (one operator is enough), ...