A gap is defined between the counter tool 14 and {TAIL ~ the sonotrode} 20 for {HEAD ~ passage} of the material web 12 
A gap is defined between the counter tool 14 and { TAIL ~ the sonotrode } 20 for { HEAD ~ passage } of the material web 12
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH