Had never heard of "ultrasonic welding" [0]. Also had no idea the wide range of applications, even many shoes use this process for bonding the materials togeth

Had never heard of "ultrasonic welding" [0]. Also had no idea the wide range of applications, even many shoes use this process for bonding the materials together [1]. [0] https://en.wikipedia.org/wiki/Ultrasonic_welding https://en.wikipedia.org/wiki/Ultrasonic_welding [1] https://science.howstuffworks.com/ultrasonic-welding.htm/printable https://science.howstuffworks.com/ultrasonic-welding.htm/pri...