VEHICLE MUFFLER MANUFACTURING METHOD

To provide a vehicle muffler manufacturing method that can simply and promptly install a sound-absorbing material between pipes of an inner-outer double pipe of the vehicle muffler. The vehicle muffler manufacturing method includes: forming a tubular body 6 with a nonwoven fabric 2 made of inorganic fibers 11 each being in a filament form; inserting and installing the tubular body 6 as a sound-absorbing material into a space S between an inner pipe 72 and an outer pipe 71 of an inner-outer double pipe constituting a vehicle muffler. The tubular body 6 is obtained by applying a binder 3 to one surface 2a of the nonwoven fabric 2, then rolling up the nonwoven fabric 2 into a tubular shape with the surface 2a applied with the binder 3 facing inward, infiltrating the binder 3 into the nonwoven fabric 2 rolled up into the tubular shape, and heating the nonwoven fabric 2 infiltrated with the binder 3 to a predetermined temperature.