Patent ID: 9028632
Filing Date: 2015-05-12
Classification: A61F,B32B,Y10T

Abstract:
1. A method for assembling disposable diapers, each diaper comprising a chassis having a first end region and an opposing second end region separated from each other by a central region, and having a longitudinal axis and a lateral axis, the chassis comprising: a topsheet, a backsheet, and an absorbent core disposed between the topsheet and the backsheet, the method comprising the steps of: advancing a first continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction; advancing a second continuous substrate layer having a first surface and an opposing second surface in a machine direction, and defining a width in a cross direction; advancing elastic strands in the machine direction in a stretched state; applying a first adhesive continuously along the machine direction to at least one of the elastic strands, the first surface of the first continuous substrate layer, and the first surface of the second continuous substrate layer; applying a second adhesive intermittently along the machine direction to at least one of the elastic strands, the first surface of the first continuous substrate layer, and the first surface of the second continuous substrate layer; placing the elastic strands in the stretched state directly on the first surface of the first substrate layer and directly on the first surface of the second substrate layer to form an elastic laminate, the elastic laminate including first regions that include the first adhesive and not the second adhesive and wherein the elastic strands are bonded to at least one of the first and second continuous substrate layers with the first adhesive, and second regions including both the first adhesive and the second adhesive and wherein the elastic strands are bonded to at least one of the first and second continuous substrate layers with the first adhesive and the second adhesive, the second regions intermittently spaced along the machine direction; cutting the elastic laminate along the machine direction to form a first continuous elastic laminate and a second continuous elastic laminate, each of the first continuous elastic laminate and the second continuous elastic laminate including first regions and second regions; separating the first continuous elastic laminate and the second elastic laminate in the cross direction; severing elastic strands in the first regions of the first continuous elastic laminate and the second elastic laminate, wherein the severed elastic strands retract from the first regions toward the second regions; and bonding the first end regions of each chassis with first regions of first continuous elastic laminate, and bonding the second end regions of each chassis with first regions of the second continuous elastic laminate.