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 (208, 232) and an opposing second surface (210, 234), a first longitudinal edge (218, 236) and a second longitudinal edge (220, 238) separated from the first longitudinal edge (218, 236) to define a width in a cross direction; wrapping the first surface of the first substrate onto an outer circumferential surface of an anvil roll; providing a first elastic material and a second elastic material, the first elastic material and the second elastic material each comprising a first edge region (226a, 228a) and a second edge region (226b, 228b) separated from the first edge region (226a, 228a) in the cross direction by a central region (226c, 228c); stretching the central region of the first elastic material in the cross direction; stretching the central region of the second elastic material in the cross direction; advancing the first elastic material onto the anvil to position the stretched central region of the first elastic material in contact with the second surface of the first substrate; advancing the second elastic material onto the anvil to position the stretched central region of the second elastic material in contact with the second surface of the first substrate, and wherein the second edge region of the second elastic material is separated from the first edge region of the first elastic material in a cross direction; advancing the second substrate in a machine direction to position the first surface of the second substrate in contact with the stretched central regions (226c, 228c) of the first and second elastic materials (226, 228); providing a first reinforcement layer between the first edge region of the first elastic material, the second edge region of the second elastic material, and either the second surface of first substrate or the first surface of the second substrate; forming an elastic laminate by ultrasonically bonding on the anvil the first reinforcement layer together with the first edge region of the first elastic material, the second edge region of the second elastic material, the first substrate, and the second substrate, ultrasonically bonding the stretched central regions (226c, 228c) of the first and second elastic materials (226, 228) together with the first substrate and the second substrate; and cutting the elastic laminate along the machine direction through the first reinforcement layer, the first substrate, and the second substrate to form a first elastic laminate and a second elastic laminate. providing a first substrate and a second substrate, the first substrate and the second substrate each comprising a first surface (208, 232) and an opposing second surface (210, 234), a first longitudinal edge (218, 236) and a second longitudinal edge (220, 238) separated from the first longitudinal edge (218, 236) to define a width in a cross direction; wrapping the first surface of the first substrate onto an outer circumferential surface of an anvil roll; providing a first elastic material and a second elastic material, the first elastic material and the second elastic material each comprising a first edge region (226a, 228a) and a second edge region (226b, 228b) separated from the first edge region (226a, 228a) in the cross direction by a central region (226c, 228c); stretching the central region of the first elastic material in the cross direction; stretching the central region of the second elastic material in the cross direction; advancing the first elastic material onto the anvil to position the stretched central region of the first elastic material in contact with the second surface of the first substrate; advancing the second elastic material onto the anvil to position the stretched central region of the second elastic material in contact with the second surface of the first substrate, and wherein the second edge region of the second elastic material is separated from the first edge region of the first elastic material in a cross direction; advancing the second substrate in a machine direction to position the first surface of the second substrate in contact with the stretched central regions (226c, 228c) of the first and second elastic materials (226, 228); providing a first reinforcement layer between the first edge region of the first elastic material, the second edge region of the second elastic material, and either the second surface of first substrate or the first surface of the second substrate; forming an elastic laminate by ultrasonically bonding on the anvil the first reinforcement layer together with the first edge region of the first elastic material, the second edge region of the second elastic material, the first substrate, and the second substrate, ultrasonically bonding the stretched central regions (226c, 228c) of the first and second elastic materials (226, 228) together with the first substrate and the second substrate; and cutting the elastic laminate along the machine direction through the first reinforcement layer, the first substrate, and the second substrate to form a first elastic laminate and a second elastic laminate.