Abstract: A machine that forms a web into bags or pouches includes a folding station configured to fold the web such that opposing sides of the web overlap each other and void is defined therein. A sealing section is located downstream in a machine direction from the folding station and configured to receive the web from the folding station. The sealing section is configured to form a lap seal in the web with an ultrasonic sealer having a horn and an anvil, wherein the anvil is located in the void and is configured to rotate about an axis.

Abstract: In certain examples, a machine that forms a web into bags or pouches includes a sealing section through which the web is conveyed in a machine direction. The sealing section is configured to form a lap seal in the web and has an input end configured to receive the web which has a first web section and a second web section. An ultrasonic sealer with a horn and an anvil defines a nip therebetween through which the first web section passes. The ultrasonic sealer is configured to form the lap seal in the first web section. The anvil is positioned between the first web section and the second web section. An output end is configured to dispense the web with the lap seal formed therein.

Abstract: In certain examples, a machine that forms a web into bags or pouches includes a sealing section through which the web is conveyed in a machine direction. The sealing section is configured to form a lap seal in the web and has an input end configured to receive the web which has a first web section and a second web section. An ultrasonic sealer with a horn and an anvil defines a nip therebetween through which the first web section passes. The ultrasonic sealer is configured to form the lap seal in the first web section. The anvil is positioned between the first web section and the second web section. An output end is configured to dispense the web with the lap seal formed therein.