{HEAD ~ an ultrasonic unit} including a converter, a sonotrode to act on a material web, and a booster to connect {TAIL ~ the sonotrode} to the converter 
{ HEAD ~ an ultrasonic unit } including a converter , a sonotrode to act on a material web , and a booster to connect { TAIL ~ the sonotrode } to the converter
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH