In the preferred embodiment, the layers 116 are composed of polypropylene having {HEAD ~ a thickness} of approximately 20.0 microns, with {TAIL ~ a thickness variation} of 0.3 microns 
with
In the preferred embodiment , the layers 116 are composed of polypropylene having { HEAD ~ a thickness } of approximately 20.0 microns , with { TAIL ~ a thickness variation } of 0.3 microns
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH