Umbhobho we-polypropylene (i-MPP) ongeyiyo yokwemba kwiintambo zamandla luhlobo olutsha lombhobho weplastiki owenziwe nge-polypropylene eguquliweyo njengeyona nto iphambili, usebenzisa i-formula ekhethekileyo kunye nobuchwepheshe bokucubungula. Inamandla aphezulu, uzinzo oluhle, kunye nokubeka ikhebula ngokulula. Ukwakhiwa okulula, ukonga iindleko kunye noluhlu lweenzuzo. Njengokwakhiwa kombhobho we-jacking, igxininisa ubuntu bemveliso. Ihlangabezana neemfuno zophuhliso lwezixeko zanamhlanje kwaye ifanelekile ukungcwatywa kuluhlu lwe-2-18M. Ukwakhiwa kwe-sheath yentambo yamandla e-MPP eguquliweyo usebenzisa iteknoloji engenazintambo ayiqinisekisi kuphela ukuthembeka kothungelwano lombhobho, kunciphisa izinga lokusilela kuthungelwano lombhobho, kodwa luphucula kakhulu inkangeleko yesixeko kunye nokusingqongileyo.