04517790 is referenced by 70 patents and cites 8 patents.

An apparatus and method for continuous rotary ultrasonic sealing of form and fill machines to produce packages utilizes a rotary anvil and cutter knife and an ultrasonic horn having adjustable simulated rotary motion movable in synchronism with the anvil for providing an end seal on packages.

Title
Apparatus and method for ultrasonic sealing of packages
Application Number
6/583970
Publication Number
4517790
Application Date
February 27, 1984
Publication Date
May 21, 1985
Inventor
William D Kreager
Dallas
TX, US
Agent
Bernard Rothwell & Brown
Assignee
Frito Lay
TX, US
IPC
B31B 21/60
B31B 21/14
B29C 27/08
View Original Source