Iyi firime ntoya kandi ikoze muri pulasitiki ikozwe muri polyethylene yo mu bwoko bwa "linear-dimension low-dimension" (LLDPE) kandi yagenewe kurambura no gufata ku bintu, bigatuma ipfunyika neza kandi ihamye. Imwe mu nyungu z'ingenzi za firime yo kurambura ni ubushobozi bwayo bwo guhuza imiterere y'ibicuruzwa bitandukanye, hatitawe ku bunini cyangwa imiterere. Uku guhinduka kw'ibintu bituma ibintu by'ubwoko bwose, kuva ku dusanduku na pallet kugeza ku bintu bifite imiterere idasobanutse, bishobora gupfunyikwa neza kugira ngo byoherezwe cyangwa bibikwe. Uburemere bw'ifirime yo kurambura butuma ihuriza hamwe ibintu neza, bikarinda ko bihinduka cyangwa ngo bimeneke mu gihe cyo kubitwara.
