Ilaphu lenziwe ngemicu ye-polypropylene yokutya, kunye neenzuzo ze-asidi kunye nokumelana ne-alkali, ukumelana nokhukuliseko, ukumelana nokuguga, amandla amakhulu, ubungakanani obuzinzileyo kunye nokuzinza okuhle njl.i-PP + PE ukubekwa bodwa kwigumbi lokuhlolwa kwewadi yezigulana ezingalaliswayo kumaziko onyango