A method for assembling elastic laminates, the method comprising the steps of: providing a first substrate and a second substrate, the first substrate and the second substrate each comprising a first surface (204, 212) and an opposing second surface (206, 214), and defining a width in a cross direction; wrapping the first surface of the first substrate onto an outer circumferential surface of an anvil; advancing an elastic film to a spreader mechanism, the elastic film comprising a first edge and a second edge separated from the first edge in the cross direction by a central region; stretching the elastic film at the spreader mechanism in the cross direction to a first elongation, wherein the spreader mechanism comprises a ring rolling apparatus; advancing the elastic film from the ring rolling apparatus to a first disk and a second disk, wherein the first disk and the second disk are canted relative each other, each disk comprising an outer rim (116b, 118b), wherein as the first and second disks (116, 118) rotate, the outer rims (116b, 118b) are separated from each other by a distance that increases from a minimum distance at a first location to a maximum distance at a second location; consolidating the elastic film to a second elongation in the cross direction, wherein the second the elongation is less than the first elongation reducing the elongation from a first stretched length to a second stretched length that is less than the first stretched length and greater than zero by advancing the elastic film on the rotating first disk and second disk downstream of the second location; advancing the consolidated elastic material from the first disk and the second disk onto the anvil; positioning the consolidated elastic film in contact with the second surface of the first substrate on the anvil; advancing the second substrate to position the first surface of the second substrate in contact with the consolidated elastic film and the second surface of the first substrate on the anvil; and ultrasonically bonding the first substrate together with the second substrate with the elastic film positioned between the first substrate and the second substrate on the anvil to form an elastic laminate. providing a first substrate and a second substrate, the first substrate and the second substrate each comprising a first surface (204, 212) and an opposing second surface (206, 214), and defining a width in a cross direction; wrapping the first surface of the first substrate onto an outer circumferential surface of an anvil; advancing an elastic film to a spreader mechanism, the elastic film comprising a first edge and a second edge separated from the first edge in the cross direction by a central region; stretching the elastic film at the spreader mechanism in the cross direction to a first elongation, wherein the spreader mechanism comprises a ring rolling apparatus; advancing the elastic film from the ring rolling apparatus to a first disk and a second disk, wherein the first disk and the second disk are canted relative each other, each disk comprising an outer rim (116b, 118b), wherein as the first and second disks (116, 118) rotate, the outer rims (116b, 118b) are separated from each other by a distance that increases from a minimum distance at a first location to a maximum distance at a second location; consolidating the elastic film to a second elongation in the cross direction, wherein the second the elongation is less than the first elongation reducing the elongation from a first stretched length to a second stretched length that is less than the first stretched length and greater than zero by advancing the elastic film on the rotating first disk and second disk downstream of the second location; advancing the consolidated elastic material from the first disk and the second disk onto the anvil; positioning the consolidated elastic film in contact with the second surface of the first substrate on the anvil; advancing the second substrate to position the first surface of the second substrate in contact with the consolidated elastic film and the second surface of the first substrate on the anvil; and ultrasonically bonding the first substrate together with the second substrate with the elastic film positioned between the first substrate and the second substrate on the anvil to form an elastic laminate.