Patent ID: 9186845
Filing Date: 2015-11-17
Classification: A61F,B29C,B29K,B29L

Abstract:
1. A web welding system including an ultrasonic welding device that welds a plurality of webs together while the system transferring the webs, the ultrasonic welding device comprising: a first anvil roll that includes a pair of anvils; first and second ultrasonic horns that work together with the pair of anvils to apply vibration energies to the webs; a second anvil roll that includes another pair of anvils; and third and fourth ultrasonic horns that work together with the pair of anvils in the second anvil roll to apply vibration energies to the webs, wherein the first and second ultrasonic horns are arranged so that when any one of the pair of anvils in the first anvil roll is opposed to the first horn, another of the pair of anvils in the first anvil roll is simultaneously opposed to the second horn, the third and fourth ultrasonic horns are arranged so that when any one of the pair of anvils in the second anvil roll is opposed to the third horn, another of the pair of anvils in the second anvil roll is simultaneously opposed to the fourth horn, and the first and second anvil rolls are arranged so that the webs are transferred to pass through, in sequence, a first gap between the first anvil roll and the first horn, a third gap between the second anvil roll and the third horn, a fourth gap between the second anvil roll and the fourth horn, and a second gap between the first anvil roll and the second horn.