semi automatic PU foam aerosol filling machine, Aerosol polyurethane foam (PU foam) is used for sealing plastic windows, doors or any gaps or cavities. This kinds of aerosol product require to put two kinds of material (MDI and PPG) into the aerosol can, and then capping immediately and meanwhile input two kinds of the propellant (DME AND LPG ) .and press the screw thread cap, and the last step is that vibrating the aerosol can , it is used to mixing the liquid material and propellant