Filime yakozwe nuburyo bwo gukina, cyane cyane ikoresha polyethylene ifite imitungo itandukanye yo kuvanga no gutunganya plastike no kuyisohora binyuze mubikorwa byo gukina.Inzira irashobora guhindurwa ukurikije ibyo abakiriya bakeneye, kandi uburemere bwikibonezamvugo, ibara, kumva gukomera, nuburyo bwo gushushanya burashobora guhinduka., Birashobora gutegurwa uburyo bwo gucapa.Ibicuruzwa birakwiriye kubipfunyika, hamwe no kumva bikabije, imbaraga nyinshi, kuramba cyane, umuvuduko mwinshi wa hydrostatike nibindi bipimo bifatika.