Umugongo wa sisitemu zitabarika zikoreshwa kwisi yose ni polypropilene PP strap, igaragara iyo igeze kubikorwa byo gupakira neza. Ibi bikoresho byo guhambira, bigizwe ahanini na polipropilene resin, polymer ya termoplastique,

Mugihe ugura ibikoresho byo gupakira mubucuruzi, kugenzura ubuziranenge bwumugozi wa polyester nintambwe yingenzi cyane igira ingaruka itaziguye kuburyo imitwaro itekanye ndetse nigiciro cyo gukora ubucuruzi. Ikirangantego cyiza cya PET polyester gifite imbaraga zingana kuva kuri 180 kugeza 1360 kg,

Imbaraga zingana zumukandara wa PET mubusanzwe ziva kuri kilo 160 kugeza 635, bitewe nubunini bwazo nubwiza bwinganda. Iki gipimo cyerekana imbaraga ntarengwa zo guhambira polyethylene terephthalate zishobora kwihanganira mbere yo kumeneka, bikagira ikintu gikomeye cyamasoko.