US 11,654,637 B2
Depth control of seal line penetration for rotary ultrasonic horn/anvil welding without mechanical stop
Andrew Germaine, East Yorkshire (GB); Patrick Sean McNichols, Hortonville, WI (US); Petr Vasko, Velke Prilepy (CZ); and Robert Edward Aldaz, St. Charles, IL (US)
Assigned to Dukane IAS, LLC, St. Charles, IL (US)
Filed by Dukane IAS, LLC, St. Charles, IL (US)
Filed on Aug. 8, 2022, as Appl. No. 17/883,294.
Application 17/883,294 is a continuation in part of application No. 17/399,429, filed on Aug. 11, 2021, granted, now 11,407,182.
Prior Publication US 2023/0053660 A1, Feb. 23, 2023
Int. Cl. B32B 41/00 (2006.01); B29C 65/08 (2006.01); B29C 65/00 (2006.01)
CPC B29C 65/087 (2013.01) [B29C 66/81411 (2013.01); B29C 66/81427 (2013.01); B29C 66/83413 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An apparatus for joining a first film portion and a second film portion together along a seal line using ultrasonic energy, the apparatus comprising:
a horn configured to receive ultrasonic energy; and
an anvil positionable in close proximity to the horn that is advanced toward the anvil, wherein at least one of the horn or the anvil has a face with a width dimension and a circumference and is rotatable about a rotation axis,
the face having a raised profile relative to the face, the raised profile having a tapered side, the tapered side having a radius between 0.5 and 5 degrees relative to a topmost surface of the raised profile, the face being positioned such that the raised profile extends along the circumference, and continuous running contact is provided between the raised profile and the other of the one of the horn or the anvil when rotated about the rotation axis, to form the seal line without any external structure to control a distance between the horn and the anvil.