The base is adapted and positioned to deform {HEAD ~ the thermoplastic sheet} upon entering {TAIL ~ the cavity} by making the thermoplastic sheet first contact the bottom portion of the wall 
upon entering
The base is adapted and positioned to deform { HEAD ~ the thermoplastic sheet } upon entering { TAIL ~ the cavity } by making the thermoplastic sheet first contact the bottom portion of the wall
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH