Kohereza imifuka, imifuka ya barafu, imifuka yibiryo byafunzwe, firime irambuye, kubyara imifuka, imirongo, imifuka yabatwara, imifuka yimyanda, firime yubuhinzi, firime zometse kandi zifatanije hamwe no gupfunyika inyama, ibiryo byafunzwe nibindi bipfunyika ibiryo, kugabanya firime (kubivanga na LDPE ), gupakira ibicuruzwa byinganda, hamwe na firime isobanutse neza iyo ihujwe na (10 ~ 20%) LDPE.