17 PACKING MATERIAL FOR FORMING SEALS, SOUND INSULATING AND SOUND ABSORBING MATERIALS MADE OF PLASTICS, NAMELY, INSULATIONS FOR AIRCRAFT, INSULATION COVERS FOR INDUSTRIAL MACHINERY AND ACOUSTICAL INSULATION FOR BUILDINGS; INSULTING PRODUCTS MADE OF PLASTICS OR MADE MAINLY OF PLASTICS, NAMELY, ACOUSTICAL INSULATION BARRIER PANELS, HEAT AND ACOUSTICAL COMPOSITE INSULATING SHIELDS FOR AUTOMOBILES AND MACHINERY, AND PIPE INSULATION FOR EXHAUST PIPES OF VEHICLES; FLEXIBLE PIPES AND TUBES OF PLASTIC WITH SOUND-ABSORBING LINING; HEAT AND ACOUSTICAL COMPOSITE INSULATING SHIELDS AND LINERS FOR AUTOMOBILES, NAMELY, SOUND ABSORBER SHIELDS FOR AUTOMOBILE ENGINES, SOUND INSULATING LINERS FOR VEHICLE HOODS, LINING FOR VEHICLE DASH PANELS ARRANGED BETWEEN THE ENGINE COMPARTMENT AND THE DRIVERS COMPARTMENT, SOUND AND HEAT INSULATING SHIELDS MOUNTED ON TRANSMISSION TUNNELS OF CAR BODIES, SOUND AND HEAT INSULATING SHIELDS MOUNTED ON EXHAUST PIPE TUNNELS OF CAR BODIES, SOUND INSULATING LINERS FOR VEHICLE FENDERS, SOUND ABSORBING HEAT SHIELDS FOR LAND VEHICLES, AND TUBULAR AIR CONDITIONING CONDUITS AND AIR DUCTS WITH A SOUND ABSORBING LINING FOR USE IN LAND VEHICLES; PLASTIC IN BARS, BLOCKS, PELLETS, RODS, SHEETS AND TUBES FOR GENERAL INDUSTRIAL USE; PLASTIC IN THE FORM OF BARS, BLOCKS, PELLETS, RODS, SHEETS AND TUBES FOR USE IN MANUFACTURING; INSULATING PRODUCTS MADE OF FOAMED PLASTICS, NAMELY, SINGLE-LAYER AND MULTI-LAYER SLABS, MATS, PROFILES, JACKETS AND PANELS FOR SOUND AND THERMAL INSULATION