1. Igishushanyo mbonera cya kabiri gishobora kubuza neza igikono cyimpapuro gutemba no kugumana ubusugire bwibiryo.
2. Igice cyo hanze cya firime ya PE ntikirinda amazi kandi kitarimo amavuta, kandi igice cyimbere cya firime ya PE kirinda guhindura umubiri wigikombe cyimpapuro kandi kongerera igihe kirekire.
3. Igishushanyo cyoroshye kandi cyihuse gishobora gukoreshwa;byoroshye gusukura no gukora;bikwiranye nibihe bitandukanye, nko gufata ibirori.