Abstract: A method of bonding a first web of material to a second web of material to form a composite material is disclosed herein. First, a first web of material and a second web of material moving in a machine direction is provided. The webs of material pass over a first energy application device extending transverse in the cross-machine direction. The first energy application device includes a primary bonding pattern and a secondary bonding pattern. The primary bonding pattern in combination with the secondary bonding pattern extends continuously across the first energy application device in the cross-machine direction. In addition, a second energy application device is provided. The second energy application device is moved in the cross-machine direction, and thereby extending the second energy application device over the first energy application device and operating the first and second energy application devices in combination to bond a composite web.

Abstract: A method of bonding a first web of material to a second web of material to form a composite material is disclosed herein. First, a first web of material and a second web of material moving in a machine direction is provided. The webs of material pass over a first energy application device extending transverse in the cross-machine direction. The first energy application device includes a primary bonding pattern and a secondary bonding pattern. The primary bonding pattern in combination with the secondary bonding pattern extends continuously across the first energy application device in the cross-machine direction. In addition, a second energy application device is provided. The second energy application device is moved in the cross-machine direction, and thereby extending the second energy application device over the first energy application device and operating the first and second energy application devices in combination to bond a composite web.

Abstract: An energy system for applying energy to a workpiece includes a first energy application device, mounted such that the first energy application device has a fixed position relative to the workpiece during energy application; a second energy application device, mounted such that the second energy application device has a moveable position relative to the workpiece to apply energy to the workpiece at a point moving progressively across the workpiece, wherein one of the first and second energy application devices is an anvil and the other of the first and second energy application devices is an ultrasonic bonder; and a controller for regulating the application of energy to the workpiece, wherein the controller is configured to adjust progressively across the workpiece one or more of bonder vibration amplitude versus position on the workpiece, bonder pressure versus position on the workpiece, and horn travel velocity versus position on the workpiece.

Abstract: A method of forming a disposable, refastenable absorbent article is disclosed. The method includes directing a first material parallel to and spaced apart from a second material. A pair of lines of perforations is formed across the width of the first material. A pair of attachment members is then secured to the first material such that each bridges across one of the pair of lines of perforations. An absorbent assembly is secured across the first and second materials to form a subassembly. The subassembly is then folded and the first and second materials are bonded together by first and second seam lines. The first and second materials are then separated at locations outward from each of the first and second seam lines to form a disposable, refastenable absorbent article.

Abstract: A method of forming a disposable, refastenable absorbent article is disclosed. The method includes directing a first material parallel to and spaced apart from a second material. A pair of lines of perforations is formed across the width of the first material. A pair of attachment members is then secured to the first material such that each bridges across one of the pair of lines of perforations. An absorbent assembly is secured across the first and second materials to form a subassembly. The subassembly is then folded and the first and second materials are bonded together by first and second seam lines. The first and second materials are then separated at locations outward from each of the first and second seam lines to form a disposable, refastenable absorbent article.

Abstract: A rotary die cutter for forming a non-linear line of perforations in a strip of material is disclosed. The rotary die cutter includes a rotatable anvil roll and a rotatable knife roll. The knife roll has a peripheral surface with at least one knife formed thereon. The knife has a non-linear configuration. The knife extends across at least about half of the width of the knife roll and has a plurality of land areas each separated by a notch. The knife roll is coaxially aligned with the anvil roll to form a nip therebetween through which the strip of material can pass. For each rotation of the die cutter, the knife will pass through the strip of material and be brought into direct contact with the anvil roll and form a non-linear line of perforations in the strip of material.