Ifilimu ye-BOPA yesithintelo esiphezulu se-EHA ephuhliswe nguChangsu inokugcinwa kwevumba elibalaseleyo kunye neempawu zokuthintela ioksijini [EHAp＜2cc/㎡·day·atm (23℃ 50%RH)], enokunciphisa umngcipheko wongcoliseko lwemicrobial kwaye inokugcinwa. ixesha elide.Ukugcina incasa yokuqala kunye nencasa entsha yetshizi.Ukongeza, i-EHA inokugcina i-tensile elungileyo kunye nokuchasana nokugqobhoza kumaqondo obushushu abandayo, anokunciphisa ngempumelelo umngcipheko wokuqhekeka kwengxowa okubangelwa ziimpembelelo ngexesha lothutho lolungiselelo.