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