CPC A61F 13/49012 (2013.01) [A61F 13/15699 (2013.01); A61F 13/4902 (2013.01); A61F 13/539 (2013.01); A61F 2013/15869 (2013.01); A61F 2013/15926 (2013.01)] | 18 Claims |
1. 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 and an opposing second surface, 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 spreader mechanism comprising an engagement portion and the elastic film;
stretching the elastic film at the spreader mechanism in the cross direction to a first elongation;
advancing the elastic film from the spreader mechanism to the anvil, wherein the anvil comprises an active vacuum zone having a maximum width in the cross direction (Wv), wherein the maximum width is divided into a first portion and a second portion, wherein the first portion is disposed in overlapping relationship with the engagement portion and inboard of the engagement portion in the cross direction and the first portion has a first width in the cross direction (VZi) and wherein the second portion has a second width in the cross direction (VZo), and wherein the first width in the cross direction (VZi) is greater than the second width in the cross direction (VZo);
positioning the 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 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.
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