The method 1 for making {HEAD ~ films} having residual stress of from about 50 MPas on the compressive side to about 50 MPa on {TAIL ~ the tensile side}, preferably about 10 MPa on the compressive side 
The method 1 for making { HEAD ~ films } having residual stress of from about 50 MPas on the compressive side to about 50 MPa on { TAIL ~ the tensile side } , preferably about 10 MPa on the compressive side
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH