Applying {TAIL ~ blowing pressure} through the embossing dies and applying {HEAD ~ a vacuum} through the undercut shaping portion 
Applying { TAIL ~ blowing pressure } through the embossing dies and applying { HEAD ~ a vacuum } through the undercut shaping portion
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH